Wellhead check valve for oil, oil-and-gas wells

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to oil and gas industry, particularly to devices which provide for uninterrupted operation of oil or oil-and-gas wells, characterised by annular gas show. The wellhead check valve comprises a hollow body, fitted with a supply pipe for the main component - formation fluid, mainly oil, and a supply pipe for the released component, mainly annular gas, as well as a supply pipe for the mixture of the main and released components. An internal unit is mounted inside the housing of the check valve, with a cup-shaped body, which has one channel in its side wall for releasing annular gas. The check valve also includes a shutting-off device inside the cup, with movable and immovable parts and dividing its cavity into an inlet part in front of the shutting-off device and a working part behind the shutting-off device in the direction of flow of the annular gas, linked to the stream of formation fluid through a channel in the side wall of the cup. The shutting-off device is mounted in the cup and its immovable part rests on the side wall of the cup of the internal unit of the check valve.

EFFECT: provision for uninterrupted operation of the well due to the check valve, which can wash the cup of the internal unit of the check valve with warm formation fluid, virtually on the entire perimeter during the entire operation period, as well as provision for an optimum thermal mode for any unfavourable external conditions.

20 cl, 11 dwg

 

The invention relates to the oil and gas industry and, in particular, to a device for providing continuous mode operation of wells, such as oil, or petroleum, or oil, etc. characterized by annular manifestations of gas. Gas accumulating in the annulus of the well, as a rule, corrosive and dangerous because the development of an emergency. To prevent the development of such a situation, the gas from the annulus periodically release is dumped in automatic or guided mode.

However, devices to bleed gas are often not workable due to the underestimation of features that occurs during the etching gas is a danger of formation of crystalline hydrates of this gas directly into the device for operation, and the impact of negative temperatures at the wellhead.

A device for well operation, including flow line for flow of the produced formation fluid placed on the wellhead pipe for the supply of gas from the annular space of the well, covered by a non-return valve, which is installed at an angle to the body and connected with the latter, while the reverse valve has the ability to release gas in the flow line and the ousting of formation fluid to agoamerican in flow line (SU 1348504, 03.02.1986).

A disadvantage of the known device is its low reliability, due to the fact that the known device provides a mode of total displacement warm formation fluid from the flow line of the downhole gas, which has a low heat capacity. Flow line in the environment of gas with low heat capacity almost immediately acquires the ambient temperature at the wellhead. The gas, being almost always wet, creates all conditions for primerzanie gate valve to its seat. In addition, in an uncontrollable release of gas under conditions of humidity, low temperature and differential pressure across the valve creates conditions for the formation of crystalline hydrates. As a result, the valve in such conditions and/or other reasons, described above, is not working.

Known for producing well wellhead, which includes including a valve for controlling the flow of annulus gas and is made from saddle and spring under the valve seat that is installed with the option of disabling him from work by means of the clamping screw (EN 2309240 C1, 09.03.2006)

The present invention is to increase the reliability of the inverse of the wellhead valve for safe operation of oil, oil is gas wells, regardless of external conditions at the wellhead and thereby ensuring the smooth operation of the well in General.

The problem is solved due to the fact that the reverse wellhead valve oil and gas wells according to the invention includes a hollow body, equipped with inlet pipe of the main component - formation fluid, mainly oil, gas / oil mixture, and the inlet pipe discharged component, mainly, annulus gas and outlet connections of a mixture of primary and discharged components mounted in the housing of the check valve indoor unit with a housing in the form of a Cup with at least one aperture or channel in its side wall for the annular exhaust gas, set at an angle to the vector flow of formation fluids and crossing it with education with the inner surface of the casing wall opposite the valve ring cavity, reporting on Plast fluid inlet and outlet pipes, with the check valve also includes at least one placed in a glass stop valve having a movable and a fixed part and separating the cavity at the input before the shut-off body and working for shut-off body in the direction of flow annular gas communicated with the flow of formation fluid through the said hole or channel in the side wall of the Cup located in the bulk radiana sector angle of vision mentioned stinkies pivot point of the cross-section of the output mouth of the discharge pipe of a mixture of formation fluid and annular gas moreover, a stop valve mounted in the glass, at least with contour bearing fixed part on said side wall of the Cup indoor unit check valve.

While the movable part of the valve body of the check valve can be made in the form of the spring plate, and the fixed part in the form of a saddle, and the plate is provided on the back side passed through the saddle stem guiding element, the outer end of which is exposed on the throughput cross section of the inlet pipe of the vertical component with the possibility of perception, transfer to plate pressure discharged component and opening the pressure plate last.

The plate can be performed with the circular configuration of the surface in the projection conditional on a plane normal to a reference axis of the inner valve block and valve body, and the height of the locking section of the plate is made with a variable radius of curvature of the support surface, congruent mating surfaces of the saddle, decreasing to its rear side to the border crossing in stem guide element.

The plate can be performed with a variable radius, the configuration of the surface in the projection conditional on a plane normal to a reference axis of the inner valve block and valve body, and the height of the locking section that is fir were implemented with a variable radius, smaller in all radial directions corresponding in the direction of the maximum radius of said projection and decreasing to the rear of the plate to the border of its transition to stem the guide element, the configuration of the surface of the plate congruent configuration of the mating surfaces of the seat, whereby the pressure plate is spatially oriented in the direction of its greatest radius, almost coincident or parallel to the direction of the imaginary axis, at least the inlet of the main component.

A stop valve or, at least, the movable part can be placed virtually in the middle part of the bandwidth of the cross-section of inlet connections of the main and reset components and the discharge pipe of a mixture of primary and discharged components.

The configuration of the outer surface of the side wall of the glass inner valve block, at least on the site, projection exhibited on the cross carrying the cross section of the inlet pipe of the main component, can be made in the form of a single or composite cylinder installed on the side surface in the path of the specified stream, with the possibility of wrapping them given surface.

The configuration of the outer surface of the side wall of the glass inner valve block, at least from what ASDE, projection exhibited on the cross carrying the cross section of the inlet pipe of the main component, can be performed kropielnicki in cross-section, normal to a reference axis of the inner block and combined or parallel to relative axis mentioned inlet.

The configuration of the outer surface of the side wall of the glass inner valve block, at least on the site, projection exhibited on the cross carrying the cross section of the inlet pipe of the main component, can be accomplished with a variable radius of curvature in cross-section, normal to a reference axis of the inner block and combined or parallel to relative axis mentioned inlet, with said wall of the Cup spatially located in the valve with the orientation of greatest radius of the specified section in the direction of the imaginary axis of the inlet of the main component.

The cross-section of the internal glass block, at least, in the area of the projection exposure on cross-throughput cross-section of the inlet pipe of the main component can be made elliptical or ellipsoid, with the direction of the major axis of the ellipse referred to the cross section of the glass in the direction almost coaxially or parallel to relative axis mentioned under tamago pipe.

The cross-section of the internal glass block, at least, in the area of the projection exposure on cross-throughput cross-section of the inlet pipe of the main component may be made oval or compound, with the orientation of the major axis or the largest diameter of the specified cross section of the glass, almost coaxially or parallel to relative axis mentioned inlet.

The cross-section of the internal glass block, at least, in the area of the projection exposure on cross-throughput cross-section of the inlet pipe of the main component can be performed ovoidalnaya or kvaziravnovesnogo slice facing the extended part of the section towards the vector flow of the main component, with the direction of the major axis of the specified cross section of the glass, almost coaxially or parallel to relative axis mentioned inlet of the main component.

The area of the outer surface of the side wall of the glass of the inner block, at least on the section exposed on cross-throughput cross-section of the inlet pipe of the main component and the discharge pipe of the mixture components, can be made greater than the area of the contour surface of the conventional cylinder described or recorded in the configuration at asanoha plot referred to the beaker walls of the inner valve block.

At least washed the main component of the outer surface of the side wall of the glass of the inner block, at least on the section exposed on cross-throughput cross-section of the inlet pipe of the main component and the discharge pipe of the mixture components may be formed by conventional rotation with a constant or variable radius of nonlinear guide around an imaginary axis specified block.

Conditional forming non-linear guide contour washed major component of the outer surface of the side wall of the glass of the inner block, at least on the section exposed on cross-throughput cross-section of the inlet pipe of the main component and the discharge pipe of the mixture components may be made of folded deformed, for example, in duplicate in the axial direction of the wall of the internal glass block triangular, trapezoidal, wavy or combination of folds.

Washed by the incoming flow of the main component of the outer surface of the side wall of the glass of the inner block, at least on the section exposed on cross-throughput cross-section of the inlet pipe of the main component and the discharge pipe of the mixture components, can be made with spiral spin forming folded e who cops her profile, for example, by conventional helical pattern of movement mentioned conditional broken component.

Washed by the incoming flow of the main component of the outer surface of the side wall of the glass of the inner block, at least on the section exposed on cross-throughput cross-section of the inlet pipe of the main component and the discharge pipe of the mixture components may be formed by conventional rotation referred to fold the guide relative to the notional axis of the inner block with a constant or variable radius with simultaneous reciprocating radial-axial displacement of the latter, for example, a sinusoid, including closed inscribed in conventional cylindrical surface of the beaker walls of the indoor unit.

Washed by the incoming flow of the main component of the outer surface of the side wall of the glass of the inner block, at least on the section exposed on cross-throughput cross-section of the inlet pipe of the main component and the discharge pipe of the mixture components may be made of ribbed, with a spatial orientation of edges, laminar matched with the direction vectors jet washing the walls of the specified thread or spiral angle, changing the direction of the above-mentioned vectors jet washer p is the current main component.

Spiral fins washed by the incoming flow of the main component of the external surface of the side wall of the glass of the inner block, at least on the section exposed on cross-throughput cross-section of the inlet pipe of the main component and the discharge pipe of the mixture components, can be made in the form of multiple fragments of a spiral.

Made spiral fins may have a counter-directed spin on adjacent areas exposed to cross-throughput cross-section of the inlet pipe of the main component of the length of the side wall of the Cup.

Oppositely directed spiral twist beading can be done centripetal increasing additional supply of part flow of the main component to the zone location of the shut-off body in the glass of the inner block, and the border to change the direction of helical twist beading along the length of the mentioned sections of the side wall of the glass inner projection unit exposed to a similar projection of the plate mentioned valve body on the cross carrying the cross section of the inlet pipe of the main component.

The technical result provided by the present set of features, is to ensure the smooth operation of oil, gas SLE is new well due to the increased reliability of the wellhead equipment, namely, due to the design decisions of the device for the safe operation of wells - return valve made with the possibility washer internal glass block valve warm reservoir fluid, in particular oil, practically around the perimeter at all times during the operation and provision of access discharged annular gas flow of formation fluid in the same direction of flow, and wireline fluid, securing and soft mixing this gas with the reservoir fluid and disengage gas from a glass after almost washer reservoir fluid outer surface of the side wall of the glass, which creates optimal thermal regime in the zone valve if any adverse external conditions in the area of the wellhead. In this embodiment of the device of the last works in the mode of constant more intensive accumulation of heat from flowing through the check valve warm formation fluid that has a higher heat capacity than the mixture of formation fluid and the annular gas. In this case, the mode of release of gas is provided such that it prevents the formation of crystalline hydrates in the opposite valve. It has also been found in the invention of the constructive solution of the locking member and channels for formation fluid and gas and effort podpruzhineny the plate defining the mode of gas supply non-return valve and the optimum temperature in it. Thus, to optimize the operation of the device controlling the gas pressure in the annulus and the pressure in the flow of formation fluids, preventing abnormally high pressures in the annulus.

The invention is illustrated by drawings, where:

figure 1 shows the non-return valve, longitudinal section;

figure 2 - Cup, in cross section, made ellipsoid;

figure 3 - the same, made oval;

figure 4 - the same, made oval composite;

figure 5 - the same, made ovoidalnaya;

figure 6 - the same, made in the form of a teardrop-shaped slice;

7 - forming non-linear guide contour washed major component of the outer surface of the side wall of the glass inner block is executed in duplicate in the axial direction of the wall of the internal glass block triangular folds;

on Fig the same, in the form of a trapezoidal folds;

figure 9 - the same, in the form of wavy folds;

figure 10 - the same, in combination folds;

figure 11 - return valve, is made with a ribbed outer surface of the side wall of the glass of the indoor unit.

Reverse wellhead valve 1 oil well includes a hollow body 2 equipped with a supply pipe 3, a main component of formation fluids, predominantly not the ti, oil and gas mixture, the inlet pipe 4 discharged component, mainly annulus gas, and a discharge pipe 5 a mixture of primary and discharged components mounted in the housing 2 check valve indoor unit 6 with the body in the form of glass 7 with at least one aperture 8 or channel in the side wall 9 to the annular exhaust gas, set at an angle to the vector flow of formation fluids and crossing his education with the inner surface of the casing wall 2 check valve annular cavity 10, reporting on Plast fluid inlet and outlet pipes 3 and 5, respectively. The check valve also includes at least one placed in a glass 7 shut-off body 11 having a movable part, made in the form of the spring plate 12, and the stationary part in the form of a saddle 13 and separating the cavity at the input cavity 14 before locking body 11 and the working cavity 15 for the locking body 11 in the direction of flow annular gas communicated with the flow of formation fluid through the said hole 8 or the channel in the side wall 9 of the Cup 7, located in volumetric radiana sector angle of vision mentioned wall of the pivot point of the cross-section of the output mouth of the discharge pipe 3 mixture formation fluid and the annular gas.

A stop valve 1 is mounted in the Cup 7, at least with contour bearing fixed part of the seat 13 at the said side wall 9 of the Cup 7 indoor unit 6-return valve.

The plate 12 of the locking member 11 is provided on the back side passed through the saddle 13 stem guiding element 16, the outer end of which is exposed on the throughput cross section of the inlet pipe 4 fault component with the possibility of perception, transmission plate 12 of the pressure of the discharged component and the opening of the pressure plate of the latter, and on the other side of the plate 12 communicates with the rod 17 with the compression spring 18 that communicates at one end with the plate, and the other end with the bottom of the glass 7.

The plate 12 is made with a circular configuration of the surface in the projection conditional on a plane normal to a reference axis of the inner section 6 of the valve and valve body 11, and the height of the locking section 19 of the plate is made with a variable radius of curvature of the support surface, congruent mating surfaces of the saddle, decreasing to its rear side to the border crossing in stem guide element 16.

The plate 12 can be performed with a variable radius, the configuration of the surface in the projection conditional on a plane normal to a reference axis of the inner section 6 of the valve and valve body 11, and the height of the locking section 19 of the plate 12 is Olney also with a variable radius, smaller in all radial directions corresponding in the direction of the maximum radius of said projection and decreasing to the rear of the plate to the border of its transition to stem the guide element, the configuration of the surface of the plate 12 congruent configuration of the mating surfaces of the seat 13, and the plate is spatially oriented in the direction of its greatest radius, almost coincident or parallel to the direction of the imaginary axis, at least the inlet pipe 3 of the basic component.

The locking body 11, or at least its moving part, the plate 12 is placed almost in the middle part of the bandwidth of the cross-section of inlet connections of the main and discharged components, respectively 3 and 4 and outlet pipe 5 a mixture of primary and discharged components.

Glass 7 with check valve shut-off body 11 is made removable with the possibility of its replacement, the fixing of the glass 7 in the housing 2 of the valve takes place by using, for example, the nut 20 and the pin 21 and the sleeve 22 for fixing the seat 13. Positions 23-26, packing seals, check valve. This locking system allows replacement with a minimum expenditure of time.

The configuration of the outer surface 27 of the side wall 9 of the Cup 7 vnutrennih the block 6 of the valve, at least, on the site, projection exhibited on the cross carrying the cross section of the inlet pipe 3, the main component, is made in the form of a single or composite cylinder installed on the side surface in the path of the specified stream, with the possibility of wrapping them given surface.

The configuration of the outer surface 27 of the side wall 9 of the Cup 7 internal valve block, at least on the site, projection exhibited on the cross carrying the cross section of the inlet pipe of the main component, can be performed kropielnicki (not shown) in cross-section, normal to a reference axis of the inner block and combined or parallel to relative axis mentioned inlet.

The configuration of the outer surface 27 of the side wall 9 of the Cup 7 internal valve block, at least on the site, projection exhibited on the cross carrying the cross section of the inlet pipe of the main component, can be accomplished with a variable radius of curvature (not shown) in cross-section, normal to a reference axis of the inner block and combined or parallel to relative axis mentioned inlet, with said wall of the Cup spatially located in the valve with the orientation of greatest radius specified brings the I in the direction of the imaginary axis of the inlet of the main component.

The cross-section of the glass 7 indoor unit 6, at least, in the area of the projection exposure on cross-throughput cross-section of the inlet pipe 3, the main component may be made elliptical 28 or ellipsoid, with the direction of the major axis of the ellipse referred to the cross section of the glass 7 in the direction almost coaxially or parallel to relative axis mentioned inlet 3.

The cross-section of the glass 7 indoor unit 6, at least, in the area of the projection exposure on cross-throughput cross-section of the inlet pipe 3, the main component may be made oval 29 or compound 30, the orientation of the major axis or the largest diameter of the specified cross section of the glass 7, almost coaxially or parallel to relative axis mentioned inlet 3.

The cross-section of the glass 7 indoor unit 6, at least, in the area of the projection exposure on cross-throughput cross-section of the inlet pipe 3, the main component can be performed ovoidalnaya 31 or kvaziravnovesnogo slice 32 facing the extended part of the section towards the vector flow of the main component, with the direction of the major axis of the specified cross section of the glass 7, almost coaxially or computers who inim relative axis mentioned inlet 3 of the basic component.

The area of the outer surface 27 of the side wall 9 of the Cup 7 indoor unit 6, at least, in the area exposed on cross-throughput cross-section of the inlet pipe 3, the main component and the discharge pipe 5 mixture components, is made greater than the area of the contour surface of the conventional cylinder described or recorded in the configuration of the specified portions referred to the beaker walls of the inner valve block.

At least washed the main component of the outer surface 27 of the side wall 9 of the Cup 7 indoor unit 6, at least, in the area exposed on cross-throughput cross-section of the inlet pipe 3, the main component and the discharge pipe 5 mixture components, formed of a conditional rotation with a constant or variable radius of nonlinear guide 33 around an imaginary axis specified block.

Conditional nonlinear shaping guide 33 contour washed major component of the outer surface 27 of the side wall 9 of the Cup 7 indoor unit 6, at least, in the area exposed on cross-throughput cross-section of the inlet pipe 3, the main component and the discharge pipe 5 mixture components made of folded and deformed, for example, in duplicate in the axial direction of the wall of glass triangular, tra is acidline, wavy or combination folds respectively 34, 35, 36 and 37.

Washed by the incoming flow of the main component of the outer surface 27 of the side wall 9 of the Cup 7, at least on the section exposed on cross-throughput cross-section of the inlet pipe 3, the main component and the discharge pipe 5 mixture components, made with spiral spin forming folded elements 34-37 her profile, for example, by conventional helical pattern of movement mentioned conditional broken component (not shown).

Washed by the incoming flow of the main component of the outer surface 27 of the side wall 9 of the Cup 7, at least on the section exposed on cross-throughput cross-section of the inlet pipe 3, the main component and the discharge pipe 5 mixture components, formed by conventional rotation mentioned folded guide 33 relative to the notional axis of the inner block with a constant or variable radius with simultaneous reciprocating radial-axial displacement of the latter, for example, a sinusoid (not shown), including a closed inscribed in conventional cylindrical surface of the wall 9 of the Cup 7 indoor unit 6.

Washed by the incoming flow of the main component of the outer surface 27 of the side wall 9 with the Akana, at least, in the area exposed on cross-throughput cross-section of the inlet pipe 3, the main component and the discharge pipe 5 mixture components made of ribbed, with a spatial orientation of the ribs 38, laminar matched with the direction vectors of the jet washer wall 9 of the specified thread or spiral angle, changing the direction of the above-mentioned vectors jet washer flow of the main component.

Spiral fins washed by the incoming flow of the main component of the external surface 27 of the side wall 9 of the Cup, at least, in the area exposed on cross-throughput cross-section of the inlet pipe 3, the main component and the discharge pipe 5 mixture components, made in the form of multiple fragments of a spiral (not shown).

Made spiral finning has oppositely directed spin (not shown) on the adjacent areas exposed to cross-throughput cross-section of the inlet pipe 3, the main component of the length of the side wall 9 of the Cup 7.

Oppositely directed spiral twist beading made centripetal increasing additional supply of part flow of the main component to the location of the locking member 11 in the Cup 7 int is nego block 6, and the border to change the direction of helical twist beading along the length of the mentioned sections of the side wall 9 of the Cup 7 internal projection unit exposed to a similar projection of the plate 12 mentioned valve body 11 on cross-throughput cross-section of the inlet pipe 3 of the basic component.

The check valve operates as follows.

During normal operation of the well, the flow of the reservoir fluid flows through the annular cavity 10 of the housing 2 opposite the valve, washing the external surface 27 of the side wall 9 of the Cup 7 indoor unit 6, employee directly to bleed gas from the annulus of the well, and without heating it and thereby accalia heat of formation fluids. Part of the formation fluid through the opening 8 cups 7 comes into his working cavity 15, washes and thereby heats the inner surface of the side wall 9 of the Cup 7, the saddle 13, the plate 12 and the seal 23, providing, thus, the desired temperature of the structure.

When excess gas pressure in the casing-formation annulus above the pressure of the flow of formation fluids by 0.02-0.05 MPa plate 12 under the action of the annular flow of gas is shifted, looking up from the seat 13. The gas flow through the gap between the plate 12 and seat 13 is discharged into the working cavity 15 of the Cup 7 and the through hole 8 is reset nutri of the housing 2 opposite the valve and interfere with the flow of formation fluid in the direction of its flow. The design of the device enables a soft mix of bleed gas from the formation fluid and separation of gas from the valve the flow of formation fluid, which creates optimal thermal regime in the zone of the valve regardless of external conditions at the wellhead. When the pressure annular gas inside the valve plate 12 under the action of the spring 18 compression is returned to the saddle 13, overlapping the annular flow of gas.

When the wet contact of the gas with the surfaces of the valve and the inner surface of the side wall 9 of the Cup 7 inevitably settling on them condensate with low temperature. However, its influence on the efficiency of the device is negligible due to the preliminary inventory of heat by the mass of the device and subsequent rapid heating of the device on the external and internal surfaces of the side wall 9 of the Cup 7 and the check valve, in its closed position, the warm flow of formation fluids.

The use of the invention allows to increase service life of the device and operation of wells in the whole of accident-free operation in harsh climatic conditions.

1. Reverse wellhead valve oil well, characterized in that it includes a hollow body, equipped with inlet pipe of the main component - formation fluid, the advantage is significant oil oil and gas mixture and the inlet pipe discharged component, mainly annulus gas, and a discharge pipe for the mixture of primary and discharged components mounted in the housing of the check valve indoor unit with a housing in the form of a Cup with at least one aperture or channel in its side wall for the annular exhaust gas, set at an angle to the vector flow of formation fluids and crossing his education with the inner surface of the casing wall opposite the valve ring cavity, reporting on Plast fluid inlet and outlet pipes, with the check valve also includes at least one placed in a glass stop valve having a movable and a fixed part and separating the cavity at the input before the shut-off body and working for shut-off body in the direction of flow annular gas communicated with the flow of formation fluid through the said hole or channel in the side wall of the Cup located in the bulk radiana sector angle of vision mentioned wall of the pivot point of the cross-section of the output mouth of the discharge pipe of a mixture of formation fluid and annulus gas, and a stop valve mounted in the glass, at least with contour bearing fixed part on said side article the GCC Cup indoor unit check valve.

2. Reverse wellhead valve according to claim 1, characterized in that the movable part of the valve body of the check valve are in the form of the spring plate, and the fixed part in the form of a saddle, and the plate is provided on the back side passed through the saddle stem guiding element, the outer end of which is exposed on the throughput cross section of the inlet pipe of the vertical component with the possibility of perception, transfer to plate pressure discharged component and opening the pressure plate last.

3. Reverse wellhead valve according to claim 2, characterized in that the plate is made with a circular configuration of the surface in the projection conditional on a plane normal to a reference axis of the inner valve block and valve body, and the height of the locking section of the plate is made with a variable radius of curvature of the support surface, congruent mating surfaces of the saddle, decreasing to its rear side to the border crossing in stem guide element.

4. Reverse wellhead valve according to claim 2, characterized in that the plate is made to have a variable radius of the configuration of the surface in the projection conditional on a plane normal to a reference axis of the inner valve block and valve body, and the height of the locking section of the plate is made with a variable radius, smaller in Serravalle directions corresponding in the direction of the maximum radius of said projection and decreasing to the rear of the plate to the border of its transition to stem guide element, the configuration of the surface of the plate congruent configuration of the mating surfaces of the seat, whereby the pressure plate is spatially oriented in the direction of its greatest radius, almost coincident or parallel to the direction of the imaginary axis, at least the inlet of the main component.

5. Reverse wellhead valve according to claim 1, characterized in that the locking body or at least its movable part is placed almost in the middle part of the bandwidth of the cross-section of inlet connections of the main and reset components and the discharge pipe of a mixture of primary and discharged components.

6. Reverse wellhead valve according to claim 1, characterized in that the configuration of the outer surface of the side wall of the glass inner valve block, at least on the site, projection exhibited on the cross carrying the cross section of the inlet pipe of the main component, is made in the form of a single or composite cylinder installed on the side surface in the path of the specified stream, with the possibility of wrapping them given surface.

7. Reverse wellhead valve according to claim 1, characterized in that the configuration of the outer surface of the side wall of the glass inner valve block, at least on the site, projection exhibited on the cross carrying the cross section of the overview is included of the socket main component, made kropielnicki in cross-section, normal to a reference axis of the inner block and combined or parallel to relative axis mentioned inlet.

8. Reverse wellhead valve according to claim 1, characterized in that the configuration of the outer surface of the side wall of the glass inner valve block, at least on the site, projection exhibited on the cross carrying the cross section of the inlet pipe of the main component, is made with a variable radius of curvature in cross-section, normal to a reference axis of the inner block and combined or parallel to relative axis mentioned inlet, with said wall of the Cup spatially located in the valve with the orientation of greatest radius of the specified section in the direction of the imaginary axis of the inlet of the main component.

9. Reverse wellhead valve of claim 8, wherein the cross-section of the internal glass block, at least, in the area of the projection exposure on cross-throughput cross-section of the inlet pipe of the main component is made elliptical or ellipsoid, with the direction of the major axis of the ellipse referred to the cross section of the glass in the direction almost coaxially or parallel to relative axis mentioned inlet.

10. About atny wellhead valve of claim 8, characterized in that the cross-section of the internal glass block, at least, in the area of the projection exposure on cross-throughput cross-section of the inlet pipe of the main component is made oval or integral with the orientation of the major axis or the largest diameter of the specified cross section of the glass, almost coaxially or parallel to relative axis mentioned inlet.

11. Reverse wellhead valve of claim 8, wherein the cross-section of the internal glass block, at least, in the area of the projection exposure on cross-throughput cross-section of the inlet pipe of the main component is made ovoidalnaya or kvaziravnovesnogo slice facing the extended part of the section towards the vector flow of the main component, with the direction of the major axis of the specified cross section of the glass, almost coaxially or parallel to relative axis mentioned inlet of the main component.

12. Reverse wellhead valve according to claim 1, characterized in that the outer surface of the side wall of the glass of the inner block, at least on the section exposed on cross-throughput cross-section of the inlet pipe of the main component and the discharge pipe of the mixture components, is made greater than the second area of the contour surface of the conventional cylinder, described or recorded in the configuration of the specified portions referred to the beaker walls of the inner valve block.

13. Opposite the mouth of the valve 12, characterized in that at least washed the main component of the outer surface of the side wall of the glass of the inner block, at least on the section exposed on cross-throughput cross-section of the inlet pipe of the main component and the discharge pipe of the mixture components, formed of a conditional rotation with a constant or variable radius of nonlinear guide around an imaginary axis specified block.

14. Reverse wellhead valve according to item 13, wherein the conditional forming non-linear guide contour washed major component of the outer surface of the side wall of the glass of the inner block, at least on the section exposed on cross-throughput cross-section of the inlet pipe of the main component and the discharge pipe of the mixture components, made of folded deformed, for example, in duplicate in the axial direction of the wall of the internal glass block triangular, trapezoidal, wavy or combination of folds.

15. Opposite the mouth of the valve 14, characterized in that washed by the incoming flow of the main component of the outer surface of the side wall of the article is of Caen indoor unit, at least, in the area exposed on cross-throughput cross-section of the inlet pipe of the main component and the discharge pipe of the mixture components, made with spiral spin forming folded elements of her profile, for example, by conventional helical pattern of movement mentioned conditional broken component.

16. Opposite the mouth of the valve 14, characterized in that washed by the incoming flow of the main component of the outer surface of the side wall of the glass of the inner block, at least on the section exposed on cross-throughput cross-section of the inlet pipe of the main component and the discharge pipe of the mixture components, formed by conventional rotation referred to fold the guide relative to the notional axis of the inner block with a constant or variable radius with simultaneous reciprocating radial-axial displacement of the latter, for example, a sinusoid, including closed inscribed in conventional cylindrical surface of the beaker walls of the indoor unit.

17. Reverse wellhead valve according to claim 1, characterized in that washed by the incoming flow of the main component of the outer surface of the side wall of the glass of the inner block, at least on the section exposed on cross-throughput cross-section of the overview is included of the socket main component and a discharge pipe of the mixture components, made of ribbed, with a spatial orientation of edges, laminar matched with the direction vectors of the jet rinsing the walls of the specified thread or spiral angle, changing the direction of the above-mentioned vectors jet of flushing flow of the main component.

18. Opposite the mouth of the valve 17, characterized in that the spiral fins washed by the incoming flow of the main component of the external surface of the side wall of the glass of the inner block, at least on the section exposed on cross-throughput cross-section of the inlet pipe of the main component and the discharge pipe of the mixture components, made in the form of multiple fragments of a spiral.

19. Reverse wellhead valve on p, characterized in that the helical fin has oppositely directed spin on adjacent areas exposed to cross-throughput cross-section of the inlet pipe of the main component of the length of the side wall of the Cup.

20. Reverse wellhead valve according to claim 19, characterized in that the oppositely directed spiral twist beading made centripetal increasing additional supply of part flow of the main component to the zone location of the shut-off body in the glass of the inner block, and the boundary changes direction the particular spiral twist beading along the length of the mentioned sections of the side wall of the glass inner projection unit exposed to a similar projection of the plate mentioned locking member on the transverse bandwidth the cross-section of the inlet pipe of the main component.



 

Same patents:

Shutoff valve // 2315173

FIELD: oil and gas production, particularly safety oil-field valves, valves for gas-distribution stations and underground gas storage facilities.

SUBSTANCE: shutoff valve comprises body with inlet and outlet nipples, seat with gate, pilot mechanism and input mechanism. Pilot mechanism is made as vertical rod and horizontal piston cooperating one with another in central part thereof. Lower end of vertical spring-loaded rod is connected to gate through clip. Pilot mechanism is made as control mechanism with horizontal piston made as spring-loaded horizontal rod. Central part of spring-loaded vertical rod is provided with annular groove having bead. Device has packless electromagnetic drive including body with inductance coil, stop and fixed non-magnetic bush separating inductance coil and spring-loaded horizontal rod cavities in fluid-tight manner. One end of spring-loaded horizontal rod is made as coil core and is arranged inside fixed non-magnetic bush so that is may be communicated with stop. Another end thereof cooperates with annular groove bead.

EFFECT: extended range of valve application due to possibility of remote control.

1 dwg

FIELD: oil production equipment for reservoir pressure keeping systems and to be included in injection well wellhead fittings.

SUBSTANCE: check valve comprises reel-like body with central orifice for check valve receiving. The orifice has end annular sealing extensions to be inserted in corresponding grooves. The grooves are made in front and rear connection flanges of wellhead injection fitting pipeline. The check valve is valve pair of downhole sucker-rod pump. Valve pair position is within positive magnitude of angle of valve pair inclination with respect to horizontal line. Valve pair includes seat and ball arranged in valve cage with central and peripheral through channels so that the ball may move in longitudinal direction for distance equal to valve stroke. Seat is retained by seat holder from the side of front connection flange included in injection wellhead fittings pipeline provided with groove for disc filter receiving. The disc filter has inner annular bead formed from the side of wellhead fitting pipeline flange connection.

EFFECT: increased operational reliability of check valve.

2 dwg

FIELD: technology for forcing substance and/or extracting fluid from well formations.

SUBSTANCE: valve includes shaft, which has one or more radial hydraulic channels, upper thimble or lower sub, upper and lower tubular threads with similar or different diameters. Shaft is made on one end with external threaded recess for spiral spring and adjusting nut, also with two external mounting surfaces with different diameters and grooves for packing elements, and differential piston mounted on two external mounting surfaces with or without an external support nut. Piston forms a hydraulic chamber together with shaft, connected to shaft hollow through one or several radial hydraulic channels. In accordance to invention in shaft, on another end, made additionally are external threaded recess for spiral spring and adjusting nut and a mounting surface. On external mounting surface, additional differential piston is mounted with or without threaded radial apertures, drive limiter, clamp, and internal packing, or a protective bushing is positioned for overlapping packing elements in grooves on middle external mounting surface of shaft during circulation of flow of substance through one or more radial hydraulic channels. Additional differential piston forms an additional hydraulic chamber with shaft, connected to shaft hollow through one or more additionally made radial hydraulic channels. Either both differential pistons or differential piston and protective bushing interact with each other under force from one or both spiral springs. In staring closed position of valve, packing elements in grooves hermetically isolate upper and/or lower hydraulic chambers from external space, and in working open position of valve, with upward or downward movement of differential piston, either another differential piston or protective bushing may overlap packing elements, thus preventing movement of a flow of substance through them.

EFFECT: increased reliability, efficiency and functionality of operation of diverter valve.

14 cl, 17 dwg

Shutoff valve // 2271438

FIELD: gas industry, particularly gas and oil flowing well protection during critical pressure decrease (increase) in well line.

SUBSTANCE: shutoff valve comprises body with inlet and outlet nipples, seat with gate, pilot mechanism, as well as adjusting and cocking devices. The pilot mechanism is made as vertical spring-loaded rod and horizontal piston with sealing means. Lower rod end is connected with the gate by link. Flat longitudinal surfaces with single transversal rests are formed in central parts of the rod and the piston. The rod and the piston may cooperate one with another so that rod rest is arranged over the piston rest. Shutoff valve adjusting device includes adjusting nut and spring brought into cooperation with the piston. The cocking device is made as outer cocking bush threadedly engaging the body and cocking bush, which may freely slide along upper rod end. The cocking bush is connected with outer cocking bush.

EFFECT: simplified structure, improved responsiveness, reliability and accuracy of valve operation.

2 dwg

FIELD: equipment for sealing or packing boreholes or wells.

SUBSTANCE: valve has metal body with inlet and outlet ends in which ceramic members are inserted. Valve also comprises replaceable reducer preferably formed ceramics. Flange unions connected to reducing valve provide transition from reducer orifice having small diameter to pipe having larger diameter. The pipe is communicated with oil refining equipment. Flange union has metal body with through channel in which ceramic member is arranged. Through channels of the ceramic members are preferably conical and have diameters gradually increasing from outlet orifice of reducing valve to inner orifice of the pipe.

EFFECT: increased service life.

41 cl, 15 dwg

Spool faucet // 2186952
The invention relates to the equipment infrastructure of oil and gas wells and can be used during the drilling and operation of oil and gas wells

The valve-choke // 2150568
The invention relates to the equipment infrastructure of oil and gas wells and can be used during the drilling and operation of oil and gas wells

Oil well pad // 2367772

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to exploitation of oil fields and can be used for remote, automatic and manual control of actuating mechanisms of shutting-off devices of wells, which are part of an oil well pad. The oil well pad comprises at least two oil wells, each of which contains an extracting column with a flow column with underground production equipment, containing at least circulating and shear valves, non-freezing return valve and, if necessary, a separation column, meant for separating oil and water, as well as a remote controlled device for cutting off flow of oil, made with an actuating mechanism, wellhead with wellhead equipment, with a column head, tubing head, on which an X-mas tree is mounted, which comprises shutting-off devices - casing and wing valves with actuating mechanisms, as well as a throttle valve adjacent to the latter for controlling flow, made with an actuating mechanism, and monitoring and control elements - fuse link and a low- and high-pressure valve. Each well is linked through its shutting-off devices to a control station, which comprises a common pump-accumulator unit and at least one control unit for each well. The pump-accumulator unit comprises a group of pumps and a high-pressure power functional hydropneumatic accumulator linked through the actuating medium of the high-pressure line. Each control unit comprises power lines for functional control of actuating mechanisms of shutting-off devices, throttle valve and the cut off device, supplied by the said high-pressure line through pressure regulators, and controls their operation through a time-stepped system for command transmission for at least closure of a well in the logical sequence: "wing valve - casing valve - cut off device" - logical control line, linked to the fuse link and low- and high-pressure control valve and fitted with hydraulic control valves which can back up command transmission for closure of each well. One of the hydraulic control valves transmits a command for closing each well to the logical control line from the fuse link, the other - from the low- and high-pressure control valve, and at least two others - from remote and manual control, respectively. The said delay system comprises delay mechanisms, fitted on sections for interaction of the logical control line with power lines for functional control of actuating mechanisms of the casing valve and the cut off device, where the delay mechanisms comprise a hydropneumatic accumulator and a throttle, which provide for closure of each well at different times. The power line for functional control of the actuating mechanism of the throttle valve is provided with a three-position distribution valve, preferably with two electromagnets.

EFFECT: more reliable and accident-free operation of oil wells, which are part of an oil well pad, reduced cost of extracting oil and much easier control of processes.

16 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to reservoir engineering and can be used for remote, automatic and manual control of actuating mechanisms of shutting-off devices of gas field wells. The equipment contains a control station for shutting-off devices of the well, more specifically wing and casing valves, fitted on wellhead equipment, choke valve, underground safety valve, with actuating mechanisms, as well as a valve for controlling low and high pressure and a fuse link. The control station includes at least one control unit for actuating mechanisms for shutting off devices, a pump-accumulator unit with and actuating medium, mainly in form of liquid, power lines for functional control of the said actuating mechanisms and a logical control line, which can provide for command transmission for at least shutting off the well in a logical sequence: wing valve - casing valve - underground safety valve, fitted for this system for double selective actuation, respectively, of the low pressure and high pressure control valves, fuse link, either remote or manual command for closing shutting off devices of the well. For this purpose the said line is also provided with a timed three-step actuating system with slow transmission of actuation command for at least closure of casing valve and underground safety valve, including logical control lines in at least sections for controlling the casing valve and the underground safety valve, different time-tuned command transmission delay mechanisms, consisting of a combination a hydropneumatic accumulator and a choke, fitted in series in the said sections. The pump-accumulator unit has a tank with actuating medium and a group of pumps.

EFFECT: more reliable and accident-free operation of the well, reduced cost of extracting oil and gas and much easier control of processes.

15 cl, 3 dwg, 1 ex

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to exploitation of gas fields and can be used for remote, automatic and manual control of actuating mechanisms of shutting-off devices of gas field wells. The equipment contains a control station for shutting-off devices of the well, more specifically wing and casing valves, fitted on wellhead equipment, throttle valve, underground safety valve, with actuating mechanisms, as well as a low- and high-pressure control valve and a fuse link. The control station includes at least one control unit for actuating mechanisms for shutting-off devices, a pump-accumulator unit with and actuating medium, power lines for functional control of the said actuating mechanisms and a logical control line, which can provide for command transmission for at least shutting off the well in the logical sequence: wing valve - casing valve - underground safety valve, fitted for this system for double selective actuation of, respectively, low- and high-pressure control valve, fuse link, either remote or manual command for closure of shutting-off devices of the well. For this purpose the said line is also provided with a timed three-step actuating system with delayed transmission of actuating command for at least closure of the casing valve and underground safety valve, including logical control lines and different time-tuned command transmission delay mechanisms, on at least sections for controlling the casing valve and safety valve. These lines consist of a combination of a hydropneumatic accumulator and a throttle fitted in series in the said sections. The power line for functional control of the actuating mechanism of the safety valve has at least one pressure booster.

EFFECT: more reliable and no-failure operation of the well, reduced cost of extracting gas, much easier control of processes.

15 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to exploitation of oil-gas fields and can be used for remote, automatic and manual control of actuating mechanisms of shutting-off devices of wells, which are part of an oil and gas well pad. The well pad comprises at least two oil and gas wells, each of which contains an extracting column and a flow column with underground production equipment, containing at least a production packer, circulation and shear valves, as well as a remote controlled safety valve with an actuating mechanism, wellhead with wellhead equipment, with a column head, tubing head, on which an X-mas tree is mounted, which includes shutting-off devices - casing and wing valves with actuating mechanisms, as well as a throttle valve adjacent to the latter, made with an actuating mechanism, and monitoring and control elements - fuse link and a low- and high-pressure control valve. Each well is linked through its shutting-off devices, throttle valve and safety valve to a control station, which comprises a common pump-accumulator unit and at least one control unit for each well. The pump-accumulator unit comprises a group of pumps, fitted for the first and second climate zones, preferably, with two parallel connected high-pressure pump, one of which is a distribution pump, and a high-pressure power functional hydropneumatic accumulator linked to the group of pumps through the actuating medium of the high-pressure line. Each control unit comprises power lines for functional control of actuating mechanisms of shutting-off devices, throttle valve and safety valve, supplied by the said high-pressure line through pressure regulators, and made with possibility of controlling their operation through a time-stepped delayed command transmission for at least closure of each well in the logical sequence: "wing valve - casing valve - safety valve" - logical control line, linked to the fuse link and low- and high-pressure control valve and fitted with hydraulic control valves which can back up command transmission for closure of each well, one of the hydraulic control valves of which can transmit a command for closure of each well to the logical control line from the fuse link, the other from the low- and high-pressure control valve, and at least two others - from remote and manual control, respectively. The said delay system comprises delay mechanisms, fitted on sections for interaction of the logical control line and power lines for functional control of actuating mechanisms of the casing valve and safety valve, where the delay mechanisms comprise a hydropneumatic accumulator and a throttle, which provide for closure of the well at different times. The power functional hydropneumatic accumulator is essentially modular-sectional.

EFFECT: more reliable and accident-free operation the well, which is part of the oil and gas well pad, reduced cost of extracting oil and gas and much easier control of processes.

17 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to oil-and-gas industry, particularly to wellhead equipment with simultaneous separate exploitation of oil and gas wells. The dual string tubing hanger is a shut-off distribution unit, which consists of three discs joined by a threaded joint, where there are openings in the bottom and top discs, coaxial with channels of the tubing hanger of the first row of tubes. In the middle disc there are openings with diametre which is greater than the diametre of openings in the bottom and top discs and eccentric with them, into which are fitted disc shaped shutters with bypass openings, which coincide with openings in the bottom and top discs when the shutters are in open position. There are toothed sectors on the shutters, which interact with the gear shaft of the actuating mechanism, which rests on bearings, one of which is in the bottom disc and the other in the top disc, with a shank which juts out above the top surface of the top disc. Tubes of flow lines are joined to the thread, made on each opening of the top disc. Operating mode of the well can be regulated by opening either the first or second flow lines successively or both lines at the same time.

EFFECT: wider functional capabilities of the wellhead equipment.

1 cl, 2 dwg

FIELD: oil and gas production.

SUBSTANCE: invention refers to oil and gas industry, particularly to method of pressure testing of well head accessories in well. The method consists in lowering a packer with a drive on a support pipe at rate not more, than 1 m/sec; the well above the packer is filled with fluid; the support pipe is pressurised at the well head; testing pressure with rate of build up 0.3-0.5 MPa/sec is created inside the well head accessories; these process conditions are held during not less, than 30 minutes; change of pressure is evaluated; the well head accessories are assessed for leak tightness or leakage; pressure in the well head accessories is dropped at rate not more, than 1 MPa/sec; the packer is released; fluid is discharged above the packer into the well; the packer with the drive and the support pipe are removed from the well at rate not more, than 1 m/sec.

EFFECT: increased accuracy of evaluating leak tightness of well head accessories at pressure testing.

2 dwg

Oil and gas well // 2365738

FIELD: oil and gas production.

SUBSTANCE: invention is related to oil and gas industry, and in particular, to development of oil and gas deposits, and may be used for remote, automatic and manual control of actuating mechanisms of oil and gas well stop elements. Well comprises flow string with tubing string with underground operating equipment, which comprises operating packer, circulating and shear valves, and also remote-controlled isolating valve arranged with actuating mechanism, wellhead with equipment having flow string head, tube head, on which well-control equipment is installed, being arranged in the form of herringbone, including stop elements - above-root and side gate valves with actuating mechanisms, and also throttle valve adjacent to the latter for control of well debit, which is arranged with actuating mechanism, and control-monitoring elements - fusible insert and valve of low and high pressure control. Besides, well is connected to station of stop elements, throttle valve and isolating valve control, which includes pump-accumulator installation and control unit. Pump-accumulator installation includes pump group equipped for the first and second climatic zones by two parallel-connected high pressure pumps, one of which is arranged as duplicating one, and power functional pneumatic hydraulic accumulator of high pressure that communicates to pump group by working medium with high pressure line. Control unit includes power lines of functional control of stop element actuating mechanisms, throttle valve, isolating valve energised from mentioned high pressure line via pressure controllers for reduction of functional pressure to required value, and these power lines are used to control operation of listed components through system of command transmission stepped in time, at least for well closure, in logical sequence - "side valve - above root gate valve - isolating valve" - logical control line. It communicates with fusible insert and valve of low and high pressure control and is equipped with hydraulic distribution valves with the possibility of well-closure commands transmission duplication, one of which - for transmission of well closure command into logical control line from fusible insert, the other - from valve of low and high pressure control. Actuation of two other valves is intended from remote and manual control. Slowdown system comprises delay mechanisms installed on sections of logical control line interaction with power lines of functional control of actuating mechanisms of above-root gate valve and isolating valve, and the delay mechanisms include control pneumatic hydraulic accumulator and throttle, which provide for time-different response for well closure. Power functional pneumatic hydraulic accumulator is arranged as modular-sectional.

EFFECT: provides for improved reliability and faultless operation of oil and gas well, lower prime cost of oil and gas production and simplified control of well.

17 cl, 3 dwg

FIELD: oil and gas production.

SUBSTANCE: invention is related to oil and gas industry, and in particular to the field of oil deposit development, and may be used for remote, automatic and manual control of actuating mechanisms of oil deposit well stop elements. Complex of equipment for well control comprises station of well stop elements control - side and above-root gate valves, which are installed on well-control equipment, throttle valve for control of well debit, underground device that isolates oil flow in well, having actuating mechanisms, and also valve for control of low and high pressure and fusible insert. Besides, control station includes unit for control of actuating mechanisms of stop elements, pump-accumulator installation with working medium, power lines of functional control of mentioned actuating mechanisms and line of logical control. This line is made with the possibility of commands transmission for well closure in logical sequence "side gate valve - above-root gate valve - isolating device". For this purpose line is equipped with system of duplicate selective actuation from response of accordingly valve of low and high pressure control, fusible insert or remote or manual commands for closure of well stop elements. Mentioned line is also equipped with system of three-staged actuation in time with slowdown of executive command transmission to closure of above-root gate valve and underground isolating valve, which comprises mechanisms of command transmission delay tuned differently in time and installed on lines of logical control in sections of above-root gate valve and isolating device. These delay mechanisms consist of combination of control pneumatic hydraulic accumulator and throttle serially installed on specified sections. Power line of functional control of throttle valve actuating mechanism is equipped with three-way distribution valve with two electromagnets.

EFFECT: provides for improved reliability and faultless operation of oil pool well, lower prime cost of oil production and simplified control of well actuating mechanisms.

15 cl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil-producing industry, particularly to method of sealing of well mouth. It includes mounting of preventer with casing head, allowing nozzle, on casing pipe, location nearby packer mouth with mechanical drive, taken out on original ground through the supporting pipe, insulation of bottom part of well against preventer by erection of packer, well filling higher than packer by process liquid, sealing through the preventer of supporting pipe, creation inside the preventer through the branch of casing head of testing pressure, implementation of technological isolation, pressure change valuation, conclusion about tightness or leakage of preventer, pressure release in preventer, depressurisation of preventer, packer releasing, discharge of process liquid from the space above packer into well and removing of packer with drive and supporting pipe from well.

EFFECT: providing of simplicity and reliability during operation, and also provides definition of preventer tightness on well.

2 dwg, 1 ex

FIELD: oils and gas production.

SUBSTANCE: group of inventions refers to methods and facilities for conservation, completion and repair of wells. The inventions facilitate control over the well during the said operations by means of assembling system of two partitions in well. Each of the partitions is located below the lower end of a flow string for well completion, when this string is installed into the well. As none of these partitions is installed higher in the borehole of the well, so both partitions rest in place during operations of conservation, completion and repair, which eliminates necessity to use a block of blowout preventers to facilitate reliable control over the well.

EFFECT: reduced cost of well construction due to reduced time required for operation of drilling rig.

44 cl, 23 dwg

FIELD: oil and gas industry.

SUBSTANCE: device has hollow cylindrical body with conical aperture for letting through geophysical device with cable, replaceable pressurizing insert, mounted in aperture of body, fixed and containing upper circular segments. Two moveable compacting collars are made with possible radial displacement relatively to cable axis in the moment of cable pressurization. Moveable compacting collars are supported by lower circular segments, each of which is rigidly connected to rod, having threaded end, directed outwards and connected to pressing nut, providing for transfer of compacting collars into compressed state in case of well mouth pressurization. Also present is circular disk with longitudinal groove for inserting cable and outer surface, being in contact to surface of aperture of hollow cylindrical body. Threaded ends of rods are outputted outwards through circular disk. Aperture of hollow cylindrical body is made conical. In assembled form in moment of well mouth pressurization circular disk, moveable compacting collars and circular segments form a conical surface on the outside, matching conical aperture of hollow cylindrical body and are in contact with it. The insert is held by cylindrical stops.

EFFECT: simplified construction, higher reliability.

11 dwg

FIELD: oil industry.

SUBSTANCE: device has hollow body which is a fragment of force pipeline at vertically placed portion of mouth armature. Tool for controlling flow of multi-component gas-liquid substance is made in form of valve, connected to rotary support. Sample chamber is a ring-shaped hollow in hollow body, placed at same level with valve and connected at inlet to flow of multi-component gas-liquid substance through extracting channels, made on hollow body. Extracting channels are made in form of side slits, positioned symmetrically relatively to valve rotation axis. Ring-shaped hollow on hollow body is connected at outlet to locking tool, mounted at extension of valve shaft and made in form of sample-taking valve. Valve shaft and sample-taking valve are interconnected through hollow intermediate shaft. Sample-taking valve is placed in the body of locking tool with possible reciprocal movement. Valve shaft and hollow intermediate shaft are interconnected with possible mutual rotation for a quarter of one turn.

EFFECT: simplified construction and maintenance, higher quality.

4 dwg

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