Unified well chamber for removable devices or instruments of various lengths

FIELD: oil and gas industry.

SUBSTANCE: invention refers to well equipment and can be implemented at production of fluid or at pumping working agent. The unified well chamber consists of a case in form of cylinder or oval pipe, of lower and upper tips with pipe thread, of an internal mandrel installed in the upper tip and made with a screwed surface for rotation of a cable tool - a projecting deflector. The hollow pocket is made with at least one additional support boring of a bigger diametre located between the lower boring of a smaller diametre of the hollow pocket and a support face of boring of a bigger diametre, also the diametre of the support boring is bigger, than the external diametre of the elastic element of the removable device or instrument; in addition, at installation of a long removable device or instrument into the hollow pocket the elastic element of the device or the instrument is fixed in the lower support face or lower boring of a bigger diametre, while at installation of relatively short removable device or instrument into the hollow pocket the elastic element is fixed higher in the additional support boring of a bigger diametre.

EFFECT: unification of well chamber design facilitating installation of long, as well as short removable devices or instruments into the same hollow pocket of chamber.

6 cl, 6 dwg

 

The invention relates to downhole equipment and can be applied in the extraction fluid or injecting working agent.

Known downhole camera for valve (A.S. No. 1716100, EV 34/06, 1992), comprising a hollow one-piece eccentric housing with symmetrically planted inside the two ledges on its lateral surface, a pocket for the valve mounted in the housing cavity under its ledges and orienting nipple placed in the upper part of the body.

Known downhole camera Sharifov (RF patent No. 2292439, EV 23/03, 34/06, 2007), consisting of shirts in the form of a cylindrical pipe, the lower and upper ends with pipe thread internal mandrel, placed in the upper tip and is made with a screw surface, eccentric and hard inside shirt hollow pocket having an open or closed bottom end, and is made with the top of the thrust input facet, with the lower bearing chamfer or lower bearing bore of larger diameter, with an average internal bore of large diameter for the flow medium through the inner or outer side of the through channels, hydraulically connecting the hollow cavity of the pocket, respectively, with the outer or inner space of the shirt, with the upper and lower bores of smaller diameter for a tight landing them meet for the o the upper and lower rows of sealing cuffs removable valve, and a shirt over a hollow pocket has a guide element to provide entrance removable valve.

Also known downhole camera type CT and CT to install valves, in particular gas-lift type 5G-25 and type 3 G-25 (http://www.promexpo-nv.m/kameri%20skvazchenie.html consisting of shirts in the form of an oval tube, the lower and upper ends with pipe thread internal mandrel, placed in the upper tip and is made with a screw surface, eccentric and hard inside shirt hollow pocket having an open lower end, and upper thrust input facet, with the lower bearing chamfer, with an average internal bore large diameter for the flow medium through the outer side of the through channels, hydraulically connecting the cavity of the hollow pockets, respectively, and outer space shirt, with upper and lower bores of smaller diameter for a tight landing in them, respectively, the upper and lower rows of sealing cuffs removable valve, and a shirt over a hollow pocket has a guide element to provide entrance removable valve.

Known downhole camera with both cylindrical and oval face, differ between Soboh the average length of the internal bore of larger diameter and, accordingly, the overall length of the hollow pocket in which it is impossible to place tightly and securely fix the standard valve with different lengths, such as gas-lift valve as type 5G-25 (long), and 3 G-25 (short), differing in the length of 20 mm and having a length different locations of the bottom row of sealing collars and, accordingly, the collet with petals.

For a tight fit and fixing standard long and short gas-lift valves, respectively, type 5G-25 and 3 G-25 (or imported VK-1) are used in practice corresponding downhole camera type CT and type CT (like borehole camera import production CVM), which differ from each other in length, the average internal bore of larger diameter and, accordingly, the overall length of the hollow pocket. If the valve type 3 G-25 or R-1 install not in its downhole camera type CT, its fixation in a hollow pocket will not happen, because the collet with petals is in a compressed state in the lower bore of smaller diameter (designed for lower number of sealing collars), or he will not lower bearing chamfer for possible disclosure and fixation, although this does not exclude the depressurization and the spontaneous ejection valve of the type 3 G-25 (or VK-1) from the hollow pocket t the PA CT at work. And if valve type 5G-25 set is not in its downhole camera type CT (or KVM), despite the possibility that hold the collets with petals at the bottom supporting the hollow chamfer pocket, there is a depressurization of the upper row of sealing collars valve type 5G-25 when you move it up (or free running) from the stream environment.

The aim of the invention is the unifying design cylindrical or oval borehole camera for the floors in her pocket different lengths standard removable devices or appliances, including gas-lift valves 5G-25, 3 G-25 and VK-1, deaf tubes type PG-25 and PG-25, regulators type RDS-25 and RDS-25, fittings type 3SH-25 and C-25, stabilizers dynamic type level SDA-25 and SDU-25, inhibitor valve type CI-25 and CI-25, Autonomous measuring devices type MICON and MICON, or HERS and HERS, and other.

The positive effect of implementation of the invention is achieved by increasing the functionality of the borehole camera, use it for different lengths of commonly used devices and simplify cable operations, increase the tightness and reliability of fixation of removable various lengths of the devices in the hollow of her pocket when working in downhole conditions.

Uniform downhole camera for different lengths con the explosive device or devices consists of a shirt in the form of a cylindrical or oval pipe, the lower and upper ends with pipe thread internal mandrel, placed in the upper tip and is made with a spiral surface for rotation of the cable tool console diverter, eccentric and hard inside shirts, hollow pockets having open or closed lower end, and upper thrust input chamfer for guiding the removable device or device and it stops him in her head, with the lower bearing chamfer or lower bearing bore of larger diameter, for fixing the elastic element is a removable device or appliance in its free state, with an average internal bore of large diameter for flow environment through inner or outer side of the through channels, hydraulically connecting the hollow cavity of the pocket, respectively, with the outer or inner space of the shirt, with the upper and lower bores of smaller diameter for a tight landing in them, respectively, the upper and lower rows of sealing cuffs removable device or apparatus, and a shirt over a hollow pocket has a guide element to provide entrance removable devices or device.

While the purpose of the invention is achieved in that the hollow pocket is made, at Merey, with one additional anchor restock the larger diameter located between the lower bore of smaller diameter and the bearing chamfer or bore of larger diameter, while the diameter of the bore is greater than the outer diameter of the elastic element removable device or apparatus, and when installed in a hollow pocket long removable device or device-elastic element is fixed to the lower supporting facet or bottom bore of larger diameter, and when installed in a hollow pocket relatively short removable device or device-elastic element is fixed above in additional anchor bore of larger diameter. The inner mandrel can be made with a groove located at the end of the screw surface for safe operation and a fixed direction in the direction of the hollow lever pocket tool - console whipstock after its rotation. When this hollow pocket is made under the removable device or instrument in the form of a hollow tube or gas-lift valve or pressure regulator, or the regulator or stabilizer level, or fitting, or inhibitor valve or shear circulation valve, or device, or a stand-alone thermometer, or flow meter. Hollow pocket can be performed under a removable device with the elastic element in the form of a collet with petals or split spring washers or rings, or Plachkov, or retainer spring. Hollow pocket, in particular, made under devices with removable storage in the form of a standard long and short gaslift valve type 5G-25 and type 3 G-25, deaf tubes type PG-25 and type PG-25, pressure regulators type RD-25 and type RD-25, flow regulators type RDS-25 and type RDS-25, fittings type S-25 and type 3SH-25, stabilizers dynamic type level SDA-25 and type SDW-25, inhibitor valve type CI-25 and type CI-25, Autonomous measuring devices like NIKON and type MICON, or type GERS and type HERS. Well the camera can be externally equipped with a sand filter, for example, in the form of a grid.

The technical result for all of these populations is to improve functionality, efficiency and reliability of standardized borehole camera for different types of devices.

Figure 1 is a, 2 is uniform downhole camera, respectively, with a hollow pocket with an open and a closed end; figure 3, 4 - removable device or devices, for example, made like valve 5G-25 (long) and type 3 G-25 (short); 5, 6 - hollow pocket with long removable device or the device.

Uniform downhole camera consists of a 1 shirt in the form of a cylindrical (figure 1) or oval (figure 2) pipe, the bottom 2 and top 3 tips with pipe thread. Top tip 3 is asesina inner mandrel 4, which has a screw surface 5 for rotation of the cable tool console diverter, for example, type ACS-73 or ACS-60B, or ACS-B, well under the tension of the rope (wire). Inner mandrel 4 can be made with a groove 6 at the end of the screw surface 5 to increase the accuracy of operation and a fixed direction in a hollow pocket 7 cable tool console whipstock. Within 1 shirt eccentric and hard is hollow pocket 7, open (1) or closed (figure 2) the end, and upper thrust input facet 8 (for example, see figure 5, 6) for directions to his removable device or apparatus and stops in her head 9. Also hollow pocket 7 has a lower bearing chamfer 10 (see figure 5) or the bore of larger diameter 11 (see figure 2) to be able to fix it (for example, see figure 5) of the elastic element 12 (for example, in the form of a collet with petals) in a free status after landing in a hollow pocket 7 long removable device or appliance (see figure 3, 5). In addition, hollow pocket 7 is made with the average internal bore 13 of large diameter for the flow medium through the outer side 14 (Fig 1, 5, 6) or internal 15 (2) end-to-end channels, separated from the top 16 and bottom 17 of the sealing sleeves (5, 6), and hydraulically connecting the cavity 18 of the hollow CT is Ana 7, accordingly, external 19 (1) or internal 20 (2) space 1 shirt. Thus the top 16 and bottom 17 a number of sealing sleeves, removable devices (or device) positioned inside a hollow pocket 7 in the top 21 and bottom 22 of the bore of smaller diameter (figure 5, 6) for their tight fit. In shirt 1 above hollow pocket 7 has a guide element 23 (Fig 1, 2) to guide and provide input to the removable device or devices in a hollow pocket 7.

Hollow pocket 7 is made with an additional bore 24 (figure 5, 6, 2) larger diameter (may be more for other lengths of removable devices or appliances located between the lower bore 22 of a smaller diameter and the base 10 chamfer (figure 5, 6) or bore of larger diameter 11 (figure 2), while the diameter of the bore 24, 11 more than the outer free diameter of the elastic element 12 removable devices or appliances. When installed in a hollow pocket 7 relatively short removable device or apparatus (4, 6) of the elastic element 12 is fixed above in the free state in additional bore 24.

Thus, when installed in a hollow pocket 7 uniform downhole camera (for example, see figure 1) long removable device or apparatus (3) of the elastic element 12 is fixed in a free state in the lower supporting chamfer 10 (figure 5), and installing the same on the first pocket 7 relatively short removable device or apparatus (figure 4) of the elastic element 12 is fixed above in the free state in additional bore 24 (6). This allows in the same borehole camera tightly to install and securely fix in the hollow of her pocket 7 is either long or short standard removable device or instrument which, in turn, allows the use of similar downhole camera, simplifies the process for changing the removable device or devices, prevents confusion and increases their efficiency and reliability.

1. Uniform downhole camera for different lengths of removable devices or instruments, consisting of shirts in the form of a cylindrical or oval pipe, the lower and upper ends with pipe thread internal mandrel, placed in the upper tip and is made with a spiral surface for rotation of the cable tool console diverter, eccentric and hard inside shirts, hollow pockets having open or closed lower end, and upper thrust input chamfer for guiding the removable device or appliance and stops in her head, with the lower bearing chamfer or lower bearing bore of larger diameter, for fixing the elastic element removable device or appliance in its free state, with an average internal bore of large diameter for the flow medium through the inner or outer side of the district the major channels, hydraulically connecting the hollow cavity of the pocket, respectively, with the outer or inner space of the shirt, with the upper and lower bores of smaller diameter for a tight landing in them, respectively, the upper and lower rows of sealing cuffs removable device or apparatus, and a shirt over a hollow pocket has a guide element to provide entrance removable device or apparatus, characterized in that the hollow pocket is made, at Merey, with one additional anchor bore of larger diameter, located between the lower bore of smaller diameter and the bearing chamfer or bore of larger diameter, while the diameter of the bore greater than the outer diameter of the elastic element removable device or apparatus for the reliability of its fixation, and when installed in a hollow pocket long removable device or device-elastic element is fixed to the lower supporting facet or bottom bore of larger diameter, and when installed in a hollow pocket relatively short removable device or device-elastic element is fixed above in additional anchor bore of larger diameter.

2. Uniform downhole camera according to claim 1, characterized in that the inner pot is made with a groove located at the end of the screw surface, on which agnosti operation and a fixed direction in the direction of the hollow lever pocket tool console whipstock after its rotation.

3. Uniform downhole camera according to claim 1, characterized in that its hollow pocket is made under the removable device or instrument in the form of a hollow tube or gas-lift valve or pressure regulator, or the regulator or stabilizer level, or fitting, or inhibitor valve or shear circulation valve, or device, or a stand-alone thermometer, or flow meter.

4. Uniform downhole camera according to claim 1, characterized in that its hollow pocket is made under the removable device or instrument having the elastic element in the form of a collet with petals, or split spring washers or rings, or Cams, or release.

5. Uniform downhole camera according to claim 1, characterized in that it is externally equipped with a sand filter.

6. Uniform downhole camera according to claim 5, characterized in that the filter sand is made in the form of a grid.



 

Same patents:

FIELD: oil and gas industry.

SUBSTANCE: group of inventions refers to down hole tools, particularly to shape of pass through openings made in their cases for down hole valves or pass through flow regulators, specifically for valves or tools like sliding coupling applied in pressure wells. The essence of the invention is as follows: according to one of the versions the case of the down hole tool has a body of the case wherein a pass with a lenghthwise axis is made. There is at least one opening with upper and lower ends relative to the borehole of the well made in the body of the case and designed to let fluid with solid particles under pressure out of it. Also the opening, meant to minimise erosion effect onto a casing column of the well, and the pass itself have flat or inclined flat, or inclined flat and curvilinear surfaces forming an extension in the direction from the upper end of the opening to its lower end.

EFFECT: increased reliability of installation operation due to reduced erosion wear of outlet opening of this installation.

26 cl, 7 dwg

FIELD: mining.

SUBSTANCE: present invention pertains to drilling techniques and can be used in drilling oil and gas wells using downhole drilling motors. The device has a hallow case with side openings, a bushing fitted inside the case, with a seat, radial overflow valves, a centre channel, facing a slide valve, spring loaded against the stop, fitted with provision for axial displacement and with a cowling, packing rings for covering the centre channel and a nut, limiting movement of the slide valve, and a bushing. The device has an upper adapter and a rubber seal, on whose outer surface there is a groove in which a baffle plate is fit. At one end of the seal, there is conical ring-shaped ledge, which, together with the baffle plate, is pressed to the slide valve and the hollow housing by an adjustment ring and a bearing disc, with the help of the threaded joint of the upper adapter with the hollow case. The other end of the seal freely lies inside the bushing with an annular gap in the zone of radial overflow channels and the seat of the bushing. The slide valve is fitted inside the bushing, in the bottom part, which is lower than the step made on its outer surface. There are overflow channels coming out to the annular gap, formed by the bushing, fitted on the outer step of the bush sleeve, and the bottom part of the bush sleeve.

EFFECT: reduced hydraulic resistance to the flow of drilling fluid, elimination of intense abrasion and fast wearing of components, increased air-tightness of the valve device, provision for long storage periods in working condition and increased reliability, durability and cost effectiveness of the device.

4 cl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: facility contains case with holes made opposite to each of producing formations pressure tight separated from each other with packers. Adjustable valves are secured outside to a sleeve opposite to each of its holes; the said valves are designed to operate the corresponding producing formations at specified values of pressure in them. Each adjustable valve consists of a hollow cartridge wherein a bushing with a saddle is placed and a ball spring loaded from top to bottom; the said ball is placed on the bushing saddle, while the bushing is designed to adjust contacting force of a ball spring. Inside the sleeve there is a nipple plugged from beneath; this nipple is equipped with side holes and gates. At that, side holes of the nipple are arranged opposite sleeve holes; the latter must be set in the "open" position. The gates are pressure tight installed opposite to holes of the sleeve and they must be set in the "closed" position.

EFFECT: facilitating selective movement of valve bushings at one lowering of control mechanism into well, excluding of back flow of well liquid into formation at moment of well shutdown; regulated withdrawal of well liquid form producing formations depending on pressure therein.

3 dwg

FIELD: oil and gas industry.

SUBSTANCE: facility contains a case with holes made opposite to each of producing formation; valve bushings installed in the case opposite to each of its holes and designed to axially travel; the said bushings are equipped with spring circular fixing devices and clamped components; the facility also contains a control mechanism which is lowered into a well from a day surface and actuates the valve bushings to open or close the case holes, and packers. According to the invention outside the case opposite to each of its holes adjustable valves are installed. Each adjustable valve consists of a hollow cartridge wherein a bushing with a saddle is placed with a ball spring loaded from top to bottom; the said ball is placed on the bushing saddle. At that, adjustable valves are designed to run corresponding producing formations at exceeding of the set values of pressure by means of control of ball spring contraction force for each adjustable valve individually; and the clamped components of the valve bushings are made as their lower ends; while inside diameter of each of valve bushings decreases from top to bottom.

EFFECT: facilitating selective movement of valve bushings at one lowering of control mechanism into well, excluding of back flow of well liquid into formation at moment of well shutdown, regulated withdrawal of well liquid form producing formations depending on pressure therein.

2 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil and gas industry and can be used at operation of multibed wells both for separate and simultaneous development. Method includes selected development of producing beds by means of installation of receiving valves in the structure of a sleeve; the valves are installed in operating columns against each of producing bed; each valve has two steady positions: "closed" and "opened". According to the invention the receiving valves are installed on a case, located in operational column, and they bypass well liquid only in the bottom-up direction. At that, transition of receiving valves into one of the steady positions "opened" or "closed" is achieved by means of a nipple, installed inside the case and plugged from the bottom; the said nipple also has side apertures and gates. The side apertures of the nipple are arranged against the receiving valves, which ought to be set into "opened" position, while the gates are pressure tight installed against the receiving valves, which ought to be set into "closed" position.

EFFECT: reduction of well operation costs.

3 dwg

FIELD: mining.

SUBSTANCE: back valve contains sealing, rod with closed head designed to be pressed tightly to sealing, one or more grooves on rod, and pressure force creating spring for setting off rod into tightened position. The safety valve contains a plunger in a case which operates under pressure of a working fluid, a flow pipe, functionally connected with the plunger, and a system of chemical reagent supply arranged inside the case and containing at least one back valve. The device of pressure tightness control of fluid medium pipeline contains a case with at least one pass for fluid medium flow, and cartridge installed in the case and equipped with at least one pass for fluid medium flow. The latter can be positioned against at least one pass in the case so as to allow or close communication between the said passes for fluid medium in the case and the cartridge.

EFFECT: upgrades effectiveness and efficiency and reduces costs.

21 cl, 7 dwg

Casing pipe valve // 2335619

FIELD: mining.

SUBSTANCE: valve includes stopper with saddle and side channels, and bushing designed to close pressure tight side channels of stopper. The stopper is blinded at the bottom and is connected with the casing pipe. From below the casing pipe is equipped with a lower sleeve in its turn equipped below and inside with a cylinder recess where a hollow tail designed to perform upper axial movement is inserted and fixed in its lower position with shear pins. The sleeve is rigidly installed in the upper end of the hollow tail and is designed to interact in its upper position with the upper surface of the stopper saddle and to close pressure tight the side channels of the stopper from outside. A squeezing plug with a pressure tight head below and a ring recess made on the inside surface at the upper part of the stopper is used for pressure tight closing from the inside the side channels of the stopper. The ring recess of the stopper fixes pressure tight closing head of the squeezing plug in the stopper after interacting between the lower end of the tight pressing head of the squeezing plug and a stopper blind.

EFFECT: upgraded reliability of device operation and reduction of well construction period.

1 dwg

FIELD: oil and gas mining.

SUBSTANCE: flying valve for free piping contains tubular frame with separated element in form of rotation body and separated element block stop. Block stop is ring-shaped with diameter less than inner diameter of tubular frame. Ring block stop wall thickness is increased in direction of separated element, upper and lower edges of ring block stop are rounded. Block stop can be made as sole part with tubular frame and connected with two and more locks. Block stop can present the separate part with no less than two ledge-plungers pins. At that time tubular frame is made of flexible elastic material and in its wall holes are made, with similar form as block stop ledge-plunging pins. Besides, ledge-plunger pins come into holes of tubular frame.

EFFECT: lifting of liquid from hole in broad range of effective pressure and operating expenses of gas and liquid.

6 cl, 10 dwg

FIELD: boring.

SUBSTANCE: invention is referred to boring field. The flap contains a thrust ring with axled openings. Under a valve seat the plate with a working surface is placed. At the top with a thrust ring, and in bottom with a plate the spring-biased double-end bolt is connected with a through hole. In a spring-biased double-end bolt through hole a shear lock is placed. The flap is furnished by the cylindrical body. In the top of shank bore of the body the conical bore with formation of an annular platform for interplay with a thrust ring is executed. In bottom of shank bore of the body the cylindrical bore, furnished with a thread is executed. The valve seat is executed in the form of the hollow step sleeve. On an outboard surface of a saddle the thread is placed. In the top the saddle is furnished with internal bore. In the bottom of an outboard surface of a saddle the gouge for the screen is executed, connected with shank bore of the flap by means of some through holes. In the body the baffle plate is placed. The baffle plate is furnished by axled smooth-bore openings, and on the centre - by a threaded opening. In a threaded opening the hollow stopper is installed, on side surfaces of which two oval openings for movement possibility of a shear lock are executed. At the upper end of a hollow stopper the recess with a conical surface for the seal installation which have been drawn in by a spring through a washer, is executed. Between the bottom end of a hollow stopper and a baffle plate an o-ring is installed. The plate is executed with a bilateral wedge-shaped track in which the seal is placed.

EFFECT: increase of reliability of device operation.

1 dwg

Circulating valve // 2325508

FIELD: oil and gas industry.

SUBSTANCE: invention is referred to a petroleum industry, in particular to the down hole equipment and can be used at an oil recovery, flushing, and development of holes, abandonment of hydratoparaffinic formations. It provides creation of the device with the monolithic one-piece cage, device simplification, increase of its reliability, a possibility of exact adjustment for work on selected depth depending on gravity of a fluid and a depth of immersion under the working level. Essence of invention: the device consists of the hollow body with attachment threads, a spring valve, and seal members. Thus the valve body is executed monolithic and not dismountable. The valve channel is placed on a side surface of the body and equipped on ends by blank flanges with seal members, between which the valve in the form of a plunger with the central channel and the radial through holes providing circulation of a fluid is placed. The plunger is fixed in the shut position by the calibrated springs, on one end of which the block of the shim washers is placed. It provides exact adjustment of the circulating flap on selected depth of array depending on fluid gravity and a depth of immersion under the working level. The quantity of the shim washers indispensable for adjustment of the circulating flap depending on a landing depth, fluid gravity and a depth of immersion under a working level is determined on analytical expression.

EFFECT: simplification and increasing of construction reliability; of the circulating flap working; possibility providing of exact adjustment for work on selected depth.

2 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: valve has body of steel, throttling assembly, locking assembly with ball and saddle for it. Between locking and throttling assemblies resilient impenetrable wall separating these is mounted fixedly with possible interconnection via U-shaped, turned by its knee upwards, tubular channel, with inner diameter greater than ball diameter, having two branches directed downwards and having various lengths. Elongated pipe branch is connected through open end fixedly placed on wall to hollow of body throttling assembly. Short branch end is placed above wall and is within hollow of locking assembly. Short branch pipe is extended above the knee for distance greater than ball diameter. It is made in form of branch pipe with closed upper end, forming a hollow - tank with stopping device for placement and holding of ball therein in starting position. Ball can possibly fall freely under its own wait in downward direction onto saddle if released by stop as a result of effect from outside force from cementing plug at the end of cementation.

EFFECT: higher reliability, better quality.

7 cl, 8 dwg

Well valve device // 2250353

FIELD: oil and gas industry.

SUBSTANCE: well valve device has body with upper inner and lower outer attaching threads. In recess, made in middle portion of body, a lid is fixedly placed with through aperture. In lower portion of body from the end of recess side and longitudinal channels are made, provided with saddles and ball valve with diameter d, mounted in saddle of side channel and capable of returning through recess into longitudinal channel and backwards. On the saddle of longitudinal channel ball valve with diameter D is placed. Diameter D is greater than diameter d of side channel ball valve. Distance L between centers of side and longitudinal channels is not greater than two diameters d of ball valve of side channel, i.e. L < 2 d. Depth G of placement of mounting surface of longitudinal channel saddle from end of recess is greater than sum of diameters d and D of ball valves, i.e. G < D + d. Depth g of placement of mounting surface of side channel saddle surface from end of recess is not greater than half of diameter d of ball valve of side channel, i.e. g < 0.5 d. on end surface of lid, directed to channels in diametric plane, a small recess is made in form of cylindrical segment having width B and height H. Width B of small recess is greater than diameter d of ball valve of side channel and is less than diameter D of ball valve of longitudinal channel, i.e. d < B < D. Height H of small recess is greater than diameter d of ball valve of side channel, i.e. H > d. Symmetry plane of recess coincides with plane, passing through centers of longitudinal and side channels. Through aperture of lid is made above small recess in form of groove with width b, value of which is less than diameter d of side channel ball valve, i.e. b < d. Most of area of through aperture is made above half of small recess, placed above longitudinal channel.

EFFECT: higher reliability, broader range of functional capabilities, lesser manufacture and maintenance costs.

8 dwg

FIELD: oil and gas industry.

SUBSTANCE: device has body, and differential plunger with holder and compacting elements, saddle, spreader bushing and spring-loaded clamp on axis, mounted therein. Body is made with its possible connection to lower portion of product column. Spreader bushing is made eccentric and is mounted in eccentric recess. Clamp is provided with several springs. Differential plunger is connected to holding sleeve. Sleeve is made with possible interaction with holder being part of assembly of lower portion of drilling column. Holder controls closing of cut valve after letting chisel into plunger. Sleeve is mounted at distance from clamp, greater, than length of face engine, chisel and holder.

EFFECT: higher reliability and safety.

2 dwg

FIELD: oil industry.

SUBSTANCE: valve has limiter with saddle and side channels, check valve, placed at lower portion, bushing, mounted in axial channel of limiter at shear elements above side channels with possible hermetic overlapping thereof. According to invention limiter is additionally equipped with stop, interacting with bushing in its lower position. Outer surface of limiter is provided with elastic ring with stop above side channels, and made with possible hermetic mounting of limiter in required range between casing string pipes during assembling thereof. Saddle is made with cylindrical piece at lower plane of limiter. Check valve is made plated, spring-loaded with possible rotation relatively to fixture to limiter. The latter consists of rigidly interconnected elastic collar, localizer and cylindrical plate. On the latter ring-shaped recess is made, mounted oppositely to inner lower plane of limiter. Outer plane of cylindrical plate is positioned oppositely to limiter saddle. Elastic collar is placed between lower plane of limiter and cylindrical plate.

EFFECT: higher reliability, simplified manufacture and maintenance.

1 dwg

FIELD: oil production industry, particularly to regulate and/or measure flow parameters.

SUBSTANCE: regulator comprises body with outer groove, side pass channels and axial connecting channel, lower and upper collar holders with outer packing members, fishing head and tail piece with fixer. Fishing head has side pass channels and/or through axial connecting channel. The body or lower and upper collar holders and/or fishing head and/or tail piece have inner landing seats for receiving locks or have borings. Removable restrictors are installed at least in two borings and have opposite direction. The restrictors have equal or different pass and/or outer diameters and may have free or spring-loaded back valves performing restricted movement. Summary flow area of removable restrictors is less than that of side pass channels of the body.

EFFECT: increased efficiency of output and/or pressure well formation operation due to increased regulator cross-section along with limited size thereof, extended range or pressure and flow regulation during fluid extraction and/or working substance pumping-in.

18 cl, 9 dwg

FIELD: oil well operation, particularly to supply power and communication signals to downhole device.

SUBSTANCE: oil well has borehole with pipe structure arranged inside the borehole, communication system performing transmission of time-varying signal along pipe structure, as well as hydraulic system electrically linked with pipe structure and adapted to be connected to downhole device, to receive power and to control downhole device. Communication system also has impedance device arranged around pipe structure to form conductive section in which signal interference is provided, wherein the signal is current. To operate downhole device working liquid pressure is increased with the use of current. Hydraulic drive system comprises electric drive for above signal receiving, which activates pump to increase working liquid pressure. Connected to pump is drive actuated by working liquid and connected to downhole device in its working position to operate the downhole device. Signal may include communication signal to selectively operate downhole device, particularly valve.

EFFECT: decreased electric power losses during signal transmission to downhole device.

26 cl, 6 dwg

FIELD: hydrocarbon (oil, gas, gas condensate, gas-hydrate or mixture) production and formation pressure maintaining means in multiplay fields and, particularly, for simultaneous separate, as well for periodical or successive operation of several production facilities (production formations or interlayers) by single (blower, gas-lift, beam, injection and so on) boreholes.

SUBSTANCE: plant comprises one or several pipe strings lowered and installed in borehole. At least one pipe string is provided with at least two devices, namely with packer and disconnector. The plant may be separated from packer and removed from the borehole after lowering and leak-proof fitting of at least one packer in pipe string. Then pipe string having lesser, equal or greater diameter and provided with one or several devices, namely packer, disconnector, may be lowered and installed in the borehole. The disconnector comprises two removable and fixed parts, one or several borehole chambers with releasable valves, telescopic connection and pump. Pipe string is lowered directly in the borehole or in pipe string having greater diameter or is connected in leak-proof manner but loosely with corresponding fixed packer through disconnector. Pipe string bottom below packer installed above or under lower formation is hydraulically isolated or connected with borehole bottom.

EFFECT: increased technological efficiency and plant reliability.

23 cl, 38 dwg

FIELD: gas lift oil wells for reservoir fluid development and methods of reservoir gas usage for production thereof, as well as electronically operated downhole valve.

SUBSTANCE: well comprises production string extending inside well through oil-bearing and gas-bearing zones and electrically operated downhole valve. The valve is connected with production string and adapted to regulate high-pressure trip gas flow. Well is provided with connection means, which supplies gas from gas-bearing zone in downhole valve, inductive throttle arranged around production string near downhole valve to transmit electric power and control signals by production string to downhole valve through the first and the second outputs. The outputs are linked with production string from power source side and from return circuit side of inductive throttle correspondingly. Method for above well operation is also disclosed.

EFFECT: increased efficiency and operational reliability.

24 cl, 5 dwg

FIELD: oil industry, particularly to perform working operations in oil and injection wells.

SUBSTANCE: downhole device comprises housing and is connected with valve and production string at top thereof. Downhole device is fixing jack, which provides displacing of compression ball member from seat in upward direction. Device is connected with hydraulic scraper from bottom thereof and may perform two working operations in single round trip. Fixing jack consists of pusher having fixers, retaining ring and plunger pair, which provides pusher movement and is retained in sleeve by plunger retainer. In lower plunger and pusher positions compression ball member lies on seat, in upper position thereof compression ball is located above the seat. Fixers are arranged in fixer lid. Sleeve is secured in seat having support finger and support throughput finger to connect the seat inside the housing. Support throughput finger permits technological liquid flow during backwashing and provides elevated pressure is production string space downstream of tubing space during working operation performing.

EFFECT: reduced costs demanded for well repair, simplified structure and increased environmental safety.

2 dwg

FIELD: mining industry, particularly devices to provide periodic air testing of pipe string inside well.

SUBSTANCE: device comprises pressurizing valve having body with longitudinal groove and provided with head for fishing tool receiving. The valve includes anchoring unit having rod, driving mechanism and lever-like fixer set, sealing assembly with sealing means installed on the body and adapted for sealing means receiving. The device also has sleeve for pressurizing valve installation arranged at lower end of pipe string section to be air-tested, shoe made as a tube with inner annular cavity having diameter greater than inner diameter of pipe string to be air-tested. The device comprises sealing unit including lower and upper movable pistons and sealing member arranged between the pistons. Upper movable piston is provided with relief valve from the first piston side and with driving mechanism with spring-loaded piston from the second side. The relief valve has head corresponding to fishing tool. Lower piston is connected with the body provided with fixer set for anchoring unit receiving arranged in the body groove. The anchoring unit is made as a pair of double-armed pinned levers having lower ends which may cooperate with the shoe and spring-loaded wedge. The levers also have upper ends cooperating with spring-loaded rod through flat kinematic pair made as chain link.

EFFECT: simplified structure and increased reliability.

5 dwg

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