Lock reverse connection of hollow sections of drilling or casing string

FIELD: mining.

SUBSTANCE: connection comprises a nipple and a coupling interlocked with each other by a gear, splined or other surface capable of transmitting a torque and connected by, at least, one clip receiving an axial force. The clip is made in the form of a curved flexible rod located in an annular cavity formed by grooves made in one transverse plane on the round mating surfaces of the coupling and the nipple. A transverse groove is provided in the coupling wall for inserting a paper clip, which has a hook formed at its end for insertion into the said annular cavity as the string is extended and removed when it is dismantled. The hook is made in the form of a bend made in a plane perpendicular to the plane of curvature of the clip and is located between the outer surface of the coupling and its interface with the nipple in the groove of its wall having a shape corresponding to the shape of the hook.

EFFECT: excluding the force contact of the hook clip with the ground.

6 cl, 8 dwg

 



 

Same patents:

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to production of hydrocarbons from several beds and to their mixing. Well tool consists of several tubular sections connected by a new thread-less linear connection system. Cylindrical walls of adjacent walls are provided with channel for electrical conductors for connection of electronic components in the tool different sections.

EFFECT: maintenance of barometric pressure inside well tool.

32 cl, 14 dwg

FIELD: oil and gas industry.

SUBSTANCE: flush joint of drilling rods includes connection elements - nipple and coupling, which interact with their end surfaces at feed force transfer in drilling mode. At that, when removing the drilling structure from well, they interact by means of one or several cylindrical rollers in parallel transverse planes. Outer slots are made on cylindrical surface of nipple. On end surface of coupling there are end protrusions - teeth which enter slots and interact with them with their straight-sided profiles at transmission of torque moment.

EFFECT: improving reliability and life time of connection of drilling rods, providing the possibility of reversal of drilling member of the machine, simplifying the drilling structure assembly and disassembly operations.

3 dwg

FIELD: drilling equipment, particularly means to connect two members, namely drill-rod sections and/or drill-rod parts having drilling crowns or drilling heads.

SUBSTANCE: members to be connected with each other have receiving ends and ends to be received by receiving ends mating them or adjacent ends to be enclosed with clutch or bush. Receiving end or clutch has at least one the first area to be displaced or pressed in substantial radial connection direction towards end to be received so that said area is to be inserted in corresponding depression or groove of said end. The first area is defined by slot in receiving end or clutch, which defines substantially U-shaped area in plan view.

EFFECT: increased simplicity and reliability of member connection with each other.

9 cl, 4 dwg

FIELD: drilling means, particularly couplings and joints, namely ones arranged between rod and bit, or between rod and rod.

SUBSTANCE: connection assembly for downhole instrument connection to create instrument string comprises the first sub provided with instrument end to be attached to the first downhole instrument, and aligning end. The assembly also has mandrel with joint-pin end and opposite end. Joint-pin end may be brought in register with aligning end of the first sub. The second sub having adapting end connected to the second downhole instrument and the second end to be secured to opposite mandrel end is also provided. Bush having the first opened end and the second opened end may slide along mandrel and may be connected therewith. The second opened end is secured to leveling end of the firs sub to provide mutual connection of the first sub with the second one.

EFFECT: increased ability of instrument string connection and disconnection.

16 cl, 4 dwg

FIELD: mining and other industries, particularly well drilling equipment.

SUBSTANCE: clutch coupling comprises three-jaw half-coupling members connected to rod ends and shank secured inside one half-coupling. The shank is restricted from longitudinal displacement inside another half-coupling member by means of fixer installed in orifices made in half-coupling member and shank. The orifices are transversal to longitudinal clutch coupling axis. The shank is coaxial with half-coupling member and has outer diameter less than inner half-coupling member diameter. Difference between outer shank diameter and inner half-coupling member diameter is not less than double maximal working jaw face manufacturing tolerance with respect to nominal jaw positions. Shank orifice is elongated in transversal plane so that side clearances are created between outer fixer diameter and extreme points of inner elongated orifice surface which are on horizontal line. Side clearance amount is equal to that of clearance defined between outer shank diameter and inner half-coupling member diameter. Elongated orifice width is equal to fixer diameter.

EFFECT: increased reliability and service life of drilling rod coupling to be used under difficult mining and geological conditions.

3 dwg

FIELD: mining, particularly for well drilling and for other industries.

SUBSTANCE: clutch coupling comprises three-jaw drive and driven half-couplings arranged at drill rod ends and shank with thrust shoulder. The shank is secured inside the drive half-coupling and is restricted from longitudinal movement inside the drive half-coupling by fixer. The fixer is installed inside shank orifice and drive half-coupling orifice. The orifices are transversal to longitudinal clutch coupling axis. The shank is coaxial with drive half-coupling and has outer diameter less than inner diameter thereof by value equal to not less than double maximal jaw working face fabrication tolerance relative nominal position thereof. The shank is pivotally connected with driven half-coupling by thrust shoulder and springing thrust collar. The thrust shoulder contacts with end surface of drive half-coupling. Springing thrust ring is installed in annular grooves formed on surface defined by outer shank diameter and on surface defined by inner driven half-coupling diameter so that a gap is created between inner diameter of springing thrust ring and annular groove formed on the shank. The gap is not less than that between outer shank diameter and inner half-coupling diameter. Height of thrust shoulder formed on shank and depth of springing thrust collar seating in annular groove of driven half-coupling does not exceed above gap.

EFFECT: increased reliability and service life of drill rod coupling due to increased reliability of mutual working faces cooperation during well drilling.

2 cl, 3 dwg

FIELD: drilling equipment engineering.

SUBSTANCE: connection has sleeve, in walls of which in apertures welded bushings are mounted with fixing bolts, nipple, key connections, including keys and grooves. In walls of sleeve in same plane along axis two key grooves are made and two apertures, outputting into the latter, for bushings with holding bolts. In body of nipple of same plane along axis two grooves are made with fixedly mounted therein keys and two apertures for holding bolts.

EFFECT: higher efficiency and simplified manufacture.

1 dwg

Lock drill tool // 2239044
The invention relates to techniques for drilling wells, and in particular to locking compounds drilling tools

The invention relates to techniques for drilling, in particular to locking connection of hollow drill rods

FIELD: drilling equipment engineering.

SUBSTANCE: connection has sleeve, in walls of which in apertures welded bushings are mounted with fixing bolts, nipple, key connections, including keys and grooves. In walls of sleeve in same plane along axis two key grooves are made and two apertures, outputting into the latter, for bushings with holding bolts. In body of nipple of same plane along axis two grooves are made with fixedly mounted therein keys and two apertures for holding bolts.

EFFECT: higher efficiency and simplified manufacture.

1 dwg

FIELD: mining, particularly for well drilling and for other industries.

SUBSTANCE: clutch coupling comprises three-jaw drive and driven half-couplings arranged at drill rod ends and shank with thrust shoulder. The shank is secured inside the drive half-coupling and is restricted from longitudinal movement inside the drive half-coupling by fixer. The fixer is installed inside shank orifice and drive half-coupling orifice. The orifices are transversal to longitudinal clutch coupling axis. The shank is coaxial with drive half-coupling and has outer diameter less than inner diameter thereof by value equal to not less than double maximal jaw working face fabrication tolerance relative nominal position thereof. The shank is pivotally connected with driven half-coupling by thrust shoulder and springing thrust collar. The thrust shoulder contacts with end surface of drive half-coupling. Springing thrust ring is installed in annular grooves formed on surface defined by outer shank diameter and on surface defined by inner driven half-coupling diameter so that a gap is created between inner diameter of springing thrust ring and annular groove formed on the shank. The gap is not less than that between outer shank diameter and inner half-coupling diameter. Height of thrust shoulder formed on shank and depth of springing thrust collar seating in annular groove of driven half-coupling does not exceed above gap.

EFFECT: increased reliability and service life of drill rod coupling due to increased reliability of mutual working faces cooperation during well drilling.

2 cl, 3 dwg

FIELD: mining and other industries, particularly well drilling equipment.

SUBSTANCE: clutch coupling comprises three-jaw half-coupling members connected to rod ends and shank secured inside one half-coupling. The shank is restricted from longitudinal displacement inside another half-coupling member by means of fixer installed in orifices made in half-coupling member and shank. The orifices are transversal to longitudinal clutch coupling axis. The shank is coaxial with half-coupling member and has outer diameter less than inner half-coupling member diameter. Difference between outer shank diameter and inner half-coupling member diameter is not less than double maximal working jaw face manufacturing tolerance with respect to nominal jaw positions. Shank orifice is elongated in transversal plane so that side clearances are created between outer fixer diameter and extreme points of inner elongated orifice surface which are on horizontal line. Side clearance amount is equal to that of clearance defined between outer shank diameter and inner half-coupling member diameter. Elongated orifice width is equal to fixer diameter.

EFFECT: increased reliability and service life of drilling rod coupling to be used under difficult mining and geological conditions.

3 dwg

FIELD: drilling means, particularly couplings and joints, namely ones arranged between rod and bit, or between rod and rod.

SUBSTANCE: connection assembly for downhole instrument connection to create instrument string comprises the first sub provided with instrument end to be attached to the first downhole instrument, and aligning end. The assembly also has mandrel with joint-pin end and opposite end. Joint-pin end may be brought in register with aligning end of the first sub. The second sub having adapting end connected to the second downhole instrument and the second end to be secured to opposite mandrel end is also provided. Bush having the first opened end and the second opened end may slide along mandrel and may be connected therewith. The second opened end is secured to leveling end of the firs sub to provide mutual connection of the first sub with the second one.

EFFECT: increased ability of instrument string connection and disconnection.

16 cl, 4 dwg

FIELD: drilling equipment, particularly means to connect two members, namely drill-rod sections and/or drill-rod parts having drilling crowns or drilling heads.

SUBSTANCE: members to be connected with each other have receiving ends and ends to be received by receiving ends mating them or adjacent ends to be enclosed with clutch or bush. Receiving end or clutch has at least one the first area to be displaced or pressed in substantial radial connection direction towards end to be received so that said area is to be inserted in corresponding depression or groove of said end. The first area is defined by slot in receiving end or clutch, which defines substantially U-shaped area in plan view.

EFFECT: increased simplicity and reliability of member connection with each other.

9 cl, 4 dwg

FIELD: oil and gas industry.

SUBSTANCE: flush joint of drilling rods includes connection elements - nipple and coupling, which interact with their end surfaces at feed force transfer in drilling mode. At that, when removing the drilling structure from well, they interact by means of one or several cylindrical rollers in parallel transverse planes. Outer slots are made on cylindrical surface of nipple. On end surface of coupling there are end protrusions - teeth which enter slots and interact with them with their straight-sided profiles at transmission of torque moment.

EFFECT: improving reliability and life time of connection of drilling rods, providing the possibility of reversal of drilling member of the machine, simplifying the drilling structure assembly and disassembly operations.

3 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to production of hydrocarbons from several beds and to their mixing. Well tool consists of several tubular sections connected by a new thread-less linear connection system. Cylindrical walls of adjacent walls are provided with channel for electrical conductors for connection of electronic components in the tool different sections.

EFFECT: maintenance of barometric pressure inside well tool.

32 cl, 14 dwg

Drilling assembly // 2585779

FIELD: mining.

SUBSTANCE: invention relates to a drill assembly for making a well in soil or rock. Drill assembly comprises a pilot bit drilling middle part of well and a ring bit drilling outer circle of well. When drilling, ring bit is adjusted around pilot bit and rotary movement and drilling impacts are directed from pilot bit to ring bit (1) with help of irregularly shaped holes and components, installed between bits and conveying power, wherein ring bit can be removed around pilot bit and can be installed to it. coupling ring, which can be locked to ring bit, is installed around ring bit in order to join a casing pipe, which can be pulled into drilled well with help of said mentioned coupling ring. Drill bit comprises at least two annular grooves on outer circumference, in said annular grooves there are parts mounted with possibility of rotation and movement in desired range in axial direction of drilling, said parts being involved in fixing, such as snap rings and disposed on inner surface of coupling ring, wherein coupling ring is installed around periphery of drill bit in such a way that parts involved in reciprocating movement, locking coupling ring and drill bit, at least two are located on different sides of line when device is assembled, and said line extends substantially through middle point of surface, transmitting rotation of drill bit.

EFFECT: technical result is reducing length of drill bit and increasing drilling speed.

7 cl, 4 dwg

FIELD: mining.

SUBSTANCE: group of inventions relates to systems and methods for performing underground work. System for underground operations includes flexible tubing having first and second sections, swivel connection established at junction of first and second sections, and a locking device operable to rotational engagement with swivel connection in response to passage of locking device through first and second section while moving in wellbore.

EFFECT: technical result consists in enabling rotation of column divided into sections of flexible tubing within wellbore.

19 cl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: downhole tool comprises the inner and the outer components made with the possibility to move relative to one another and to form a shear joint therebetween. The shear element overlaps the shear joint. The shear element has the first part differing by the cross-sectional area from the second part. The curvilinear surface is connected to the inner or outer component and rests against the shear element. The curvilinear surface moves the shear element while moving the inner and outer components relative to each other, and switches the shear element between the state in which the first part of the element coincides with the shear joint by location, and the state in which the second part of the element coincides with the shear joint by location.

EFFECT: ensuring the balance between the shear load, at which the shear element is shorn, and additional loads that may affect the components.

20 cl, 5 dwg

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