CN110485943B - Wet-type butt joint device for underground cable for oil well - Google Patents
Wet-type butt joint device for underground cable for oil well Download PDFInfo
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- CN110485943B CN110485943B CN201910634196.2A CN201910634196A CN110485943B CN 110485943 B CN110485943 B CN 110485943B CN 201910634196 A CN201910634196 A CN 201910634196A CN 110485943 B CN110485943 B CN 110485943B
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- 210000001503 joint Anatomy 0.000 title claims abstract description 143
- 239000003129 oil well Substances 0.000 title claims abstract description 13
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- 238000002955 isolation Methods 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000003032 molecular docking Methods 0.000 claims description 16
- 230000007704 transition Effects 0.000 claims description 13
- 238000010008 shearing Methods 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 210000002445 nipple Anatomy 0.000 claims description 6
- 210000000078 claw Anatomy 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 abstract description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 239000002349 well water Substances 0.000 description 2
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- 238000012360 testing method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/028—Electrical or electro-magnetic connections
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5205—Sealing means between cable and housing, e.g. grommet
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
- H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a wet-type butt joint device for an underground cable for an oil well, which comprises a cable butt joint male head and a releasing connector, wherein when the cable butt joint male head is guided into the releasing connector arranged in the well under the condition of being carried by a pipe column, an upper insulating hoop is sleeved on an upper insulating ring to seal the upper insulating ring and the releasing connector, a lower insulating hoop is sleeved on a lower insulating ring to seal the lower insulating ring and the lower insulating ring, and a conductive hoop is sleeved on a conductive ring to form conductive connection so as to communicate an upper data cable L1 with a lower data cable L2; the locking ball with the spring is inserted into the annular groove of the butt joint guide head of the middle hole of the locking ball seat to realize butt joint locking; the limiting flower basket is supported on the bearing flower basket. The underground cable wet butt joint device has the advantages that the underground cable wet butt joint device has repeated butt joint capability, can keep stable power supply and communication for a long time after successful butt joint, only needs to lift out and maintain the cable butt joint male joint during pump inspection operation, and is favorable for field operation.
Description
Technical Field
The invention relates to an underground tool in the field of layered oil extraction in an oil field, in particular to an underground cable wet butt joint device for an oil well.
Background
At present, a sleeve sand prevention completion well of a block production well 7' of a Bohai sea oil field occupies a certain proportion, and the completion mode causes that a Y-shaped electric pump separate production pipe column commonly used on the sea cannot be implemented, separate mining cannot be realized, only a common commingled mining mode can be adopted, however, with the deepening of oil field development, the water content continuously rises, and no effective water control means exists. The cable control type electric pump separate mining process can solve the problem of 7' cased well separate mining as a novel technology, but the limit of a pipe column structure is considered, a downhole cable butt joint technology is required, namely, a special butt joint device is used between a releasing separate pipe column and an electric pump production pipe column to realize pipe column butt joint and electric connection. The underground cable butt joint technology is widely applied to the technical field of horizontal well testing, and only can play a reference role in consideration of application occasions, use modes and structural forms.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a downhole cable wet-type butt joint device for an oil well for realizing pipe column releasing butt joint and wet-type electric connection.
The technical scheme of the invention is as follows:
a wet-type butt joint device for underground cables for oil wells comprises a cable butt joint male head and a releasing connector;
the cable butt joint male joint comprises an oil pipe nipple, the lower part of the oil pipe nipple is in threaded connection with an internal threaded hole of a wire outlet joint through external threads, the longitudinal section of the wire outlet joint is of an inverted convex structure, the wire outlet joint is sleeved in a middle opening with a righted upper end, the top surface of a large diameter end of the inverted convex structure is pressed on an upper positioning boss in the middle opening, the upper part of a butt joint outer cylinder is inserted in an annular gap between the wire outlet joint and the upper end righting and is in threaded connection with the middle opening with the righted upper end, the top wall of the butt joint outer cylinder is pressed on the bottom wall of the large diameter end of the wire outlet joint, one side of the wire outlet joint is provided with a cable passing hole, the other side of the wire outlet joint is provided with an anti-rotation pin hole, an anti-rotation pin I is installed in the anti-rotation pin hole, the wire outlet joint and the butt joint outer cylinder are fixed into a whole, and a lower end righted, the lower end inner wall of the middle opening of the butt joint outer barrel is in threaded connection with an adapter, and the adapter is tightly pressed and positioned with the bottom wall of the butt joint outer barrel through a positioning boss arranged on the adapter;
the upper end body of a liquid passing pipe is in threaded connection with the lower end of a middle threaded hole of the adapter, through holes which penetrate through the pipe walls of the liquid passing pipe are uniformly distributed in the circumferential direction of the outer wall of the liquid passing pipe close to the connecting part of the liquid passing pipe and the adapter, inclined teeth are arranged in the middle of the outer wall of the liquid passing pipe, a cylindrical necking boss is arranged on the lower part of the liquid passing pipe, a spacer sleeve plug is fixed on the outer wall of the liquid passing pipe above the cylindrical necking boss through a butt joint shearing pin sleeve, the bottom wall of the spacer sleeve plug and the reducing part of the cylindrical necking boss are arranged in parallel and level, a step ring groove is arranged at the upper end of the middle hole of the spacer sleeve plug, a split ring which is sleeved on the liquid passing pipe is arranged in the lower ring groove of the step ring groove, a split ring cap which is sleeved on the liquid passing pipe is arranged, the split ring plug cap is in threaded connection with the isolating sleeve plug, and a sealing ring is arranged at the lower part between the isolating sleeve plug and the liquid passing pipe;
the outer wall of the lower end of the liquid passing pipe is in threaded sealing connection with a butt joint main body, the top wall of the butt joint main body is tightly pressed against the wall surface of the reducing part of the cylindrical necking boss, the outer wall of the lower end of the butt joint main body is in threaded sealing connection with a butt joint guide head, the outer wall of the butt joint main body above the top wall of the butt joint guide head is provided with a lower annular boss, the outer wall of the butt joint main body between the top wall of the butt joint guide head and the lower annular boss is sequentially sleeved with an upper insulating ring, a conducting ring and a lower insulating ring from top to bottom, sealing rings are respectively arranged between the upper insulating ring and the butt joint main body and between the lower insulating ring and the butt joint main body, the outer cylindrical surface of the upper insulating ring and the outer cylindrical surface of the lower insulating ring are respectively provided with three sealing ring grooves and are provided with sealing rings, the inner, the other end of the cable is connected with a wellhead industrial personal computer arranged on the ground, the cable is connected with a first internal lead through a cable sealing joint I and communicated with the conducting ring, a sealing ring groove is formed in the outer wall of the upper end of the butt joint guide head and provided with a sealing ring, an annular groove is formed in the lower portion of the sealing ring groove of the butt joint guide head, an isolation sleeve is sleeved outside the butt joint main body, an isolation sleeve plug and the lower insulating ring, the upper portion of the isolation sleeve is in threaded sealing connection with the isolation sleeve plug, the bottom of the isolation sleeve plug is in sealing connection with a lower insulating ring outer wall clamping sleeve through an inner annular groove, and the cable sealing joint I is arranged at the bottom of a middle hole of the liquid passing pipe;
the releasing connector comprises an upper connector, the bottom of the upper connector is in threaded sealing connection with a middle threaded hole at the upper part of the slip main body, the upper part of a releasing piston is arranged in a middle hole at the lower part of the middle threaded hole of the slip main body, the releasing piston is fixedly connected with the slip main body through four releasing shearing pins which are uniformly distributed along the circumferential direction of the slip main body, an inner hole at the upper end of the releasing piston is of a ball seat structure, the outer wall at the upper end of the releasing piston is of an annular structure, a sealing ring is arranged between the outer wall at the upper end of the releasing piston and the inner wall of the slip main body, a first external annular boss is arranged on the outer wall at the lower end of the releasing piston in an outward protruding way, a second external annular boss is arranged on the outer wall at the lowest end of the slip main body corresponding to the first external annular boss in an outward protruding, a circle of annular groove is formed in the inner wall of the slip main body below the annular shaft shoulder, and when the releasing piston falls down, the annular shaft shoulder can be supported on the annular groove;
the upper part of the connecting cylinder is sleeved on the outer wall of the lower part of the slip main body, the top of the connecting cylinder is positioned through a shaft shoulder on the outer wall of the slip main body, a sealing ring is arranged between the slip main body and the connecting cylinder, and the second external annular boss is tightly pressed and clamped on the bottom wall of a positioning boss on the inner wall of the connecting cylinder through the first external annular boss;
the upper part of a transition joint is in threaded connection with an inner threaded hole at the lower end of a connecting cylinder, the lower part of the transition joint is in threaded connection with an inner threaded hole at the upper end of an overflowing outer cylinder, the transition joint is respectively pressed and arranged with the bottom wall of the connecting cylinder and the top wall of the overflowing outer cylinder through a joint shoulder arranged in the middle of the outer wall so as to be positioned, a righting spare cap is in threaded connection with the outer wall at the bottom of the overflowing outer cylinder, a sealing wire outlet joint is arranged at the bottom in the overflowing outer cylinder, a supporting step is arranged in a middle hole at the lower end of the righting spare cap, a third external annular boss arranged on the outer wall at the bottom of the sealing wire outlet joint is clamped between the top wall of the supporting step and the bottom wall of the overflowing outer cylinder, a cable outlet hole and an anti-rotation pin II fixedly connecting the sealing wire, the upper part of the bearing flower basket is connected with a middle threaded hole at the lower end of the connecting short section, and the bearing flower basket is of an annular body structure;
the transition joint is connected with the sealed wire outlet joint through an overflow outer barrel, the upper end and the lower end of the transition joint are sequentially provided with a butt joint 207 and a ball locking seat, the top of the ball locking seat is in threaded connection with a lower internal threaded hole of the butt joint, an internal threaded hole at the upper end of the butt joint is in threaded connection with the outer wall of a spare cap of a butt joint body, an upper insulating sleeve, a conductive sleeve and a lower insulating sleeve are sequentially arranged on the inner wall of a middle hole of the butt joint between the spare cap of the butt joint body and the ball locking seat from top to bottom, sealing rings are respectively arranged between the upper insulating sleeve and the lower insulating sleeve and between the middle holes of the butt joint, the conductive sleeve is connected with a cable sealing joint II through a second internal lead wire, the cable sealing joint II is arranged between the ball locking seat and a gap formed by the butt joint and the overflow outer barrel and is in threaded sealing connection with the butt joint, one end of a lower data cable, the other end is connected with an underground layered production allocator;
the butt joint and the ball locking seat both comprise circular main bodies, three convex arms are uniformly distributed on the outer wall of each circular main body, the outer walls of the three convex arms are matched with the inner wall of the overflowing outer barrel in shape, the outer walls of the three convex arms are tightly matched with the inner wall of the overflowing outer barrel, liquid passing channels are respectively formed between two adjacent convex arms of the butt joint and the overflowing outer barrel as well as between two adjacent convex arms of the ball locking seat and the overflowing outer barrel, a radial threaded hole is formed in the outer wall of one side of the ball locking seat in the direction perpendicular to the axis of the spare cap of the butt joint body, a locking ball with a spring is arranged in the radial threaded hole, a limiting basket is arranged in an inner hole in the middle of the ball locking seat and is connected with the limiting basket through a shearing pin, and the limiting basket ring body is of a;
when the cable butt joint male head is guided into the releasing connector of the well under the carrying of the pipe column, the positions between the parts of the cable butt joint male head and the releasing connector are as follows: the liquid passing pipe is arranged in the connecting cylinder, the top surface of an inner annular groove at the lower part of the isolating sleeve is clamped with an annular boss at the lower part of the butt joint body, the bottom surface of the inner annular groove is supported on the top surface of the spare cap of the butt joint body, the split ring is hooked at the inclined tooth position at the middle part of the liquid passing pipe, the upper insulating sleeve hoop is sleeved on the upper insulating ring to seal the upper insulating ring and the lower insulating ring, the lower insulating sleeve hoop is sleeved on the lower insulating ring to seal the lower insulating ring, and the conductive sleeve hoop is sleeved on the conductive ring to form conductive connection so that the upper data cable L1 is communicated; the locking ball with the spring is inserted into the annular groove of the butt joint guide head of the middle hole of the locking ball seat to realize butt joint locking; the limiting flower basket is supported on the bearing flower basket.
The invention has the following beneficial effects:
(1) the releasing connector adopts a ball throwing and releasing mode, and the releasing reliability is high; the design of the limiting flower basket has a load display function, and is convenient for piping operation; the locking ball structure can realize locking after butt joint.
(2) The cable butt joint male joint adopts an upper and lower double-righting structure, the whole righting effect is good, and the butt joint success rate is improved while the butt joint is protected.
(3) The underground cable wet type butt joint device has repeated butt joint capability, can keep stable power supply and communication for a long time after successful butt joint, and is beneficial to field operation as only the cable butt joint male head is pulled out and maintained during pump inspection operation.
Drawings
FIG. 1 is a schematic diagram of a wet docking assembly for a downhole cable according to the present invention;
FIG. 2 is an enlarged view of part A of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 1;
FIG. 4 is an enlarged view of a portion C of FIG. 1;
FIG. 5 is a schematic cross-sectional view taken along line D-D of FIG. 1;
FIG. 6 is a schematic cross-sectional view taken along line E-E in FIG. 1;
FIG. 7 is an enlarged view of portion F of FIG. 1;
FIG. 8 is a schematic view of the release connector of the present invention in position after the ball is thrown;
FIG. 9 is a schematic diagram of the state of the release connector of the present invention after release;
FIG. 10 is a schematic view illustrating a docking state of the wet docking apparatus for a downhole cable according to the present invention;
FIG. 11 is an enlarged view of a portion K of FIG. 10;
FIG. 12 is a schematic view of a downhole wireline wet-butt process string according to the present invention.
Detailed Description
In order to make the present invention more easily and clearly understood, the technical solutions and technical effects of the present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1, the wet-type cable docking device for an oil well according to the present invention includes a cable docking male and a release connector.
The cable butt joint male joint comprises an oil pipe nipple 101, the lower portion of the oil pipe nipple 101 is in threaded connection with an internal threaded hole of an outlet joint 104 through external threads, the longitudinal section of the outlet joint 104 is of an inverted convex structure, the outlet joint 104 is sleeved in a middle opening of an upper end righting 103, the top surface of a diameter large end of the inverted convex structure is pressed on an upper positioning boss in the middle opening, the upper portion of a butt joint outer cylinder 105 is inserted into an annular gap between the outlet joint 104 and the upper end righting 103 and is in threaded connection with the middle opening of the upper end righting 103, and the top wall of the butt joint outer cylinder 105 presses the bottom wall of the diameter large end of the outlet joint 104 in the inverted convex structure. One side of the outgoing line connector 104 is provided with a cable passing hole, the other side of the outgoing line connector 104 is provided with an anti-rotation pin hole, an anti-rotation pin I102 is arranged in the anti-rotation pin hole, the outgoing line connector 104 and the butt joint outer cylinder 105 are fixed into a whole by the anti-rotation pin I102, the anti-rotation pin I is used for limiting mutual rotation between the outgoing line connector 104 and the butt joint outer cylinder 105, and therefore torque can be transmitted. The lower end barrel of the butt joint outer barrel 105 is in threaded connection with a middle threaded hole of a lower end righting 106, an adapter 107 is in threaded connection with the inner wall of the lower end of a middle opening of the butt joint outer barrel 105, and the adapter 107 is in compression positioning with the bottom wall of the butt joint outer barrel 105 through a positioning boss arranged on the adapter.
The upper end pipe body of one liquid passing pipe 108 is in threaded connection with the lower end of the middle threaded hole of the adapter 107, a plurality of (preferably four) through holes penetrating through the pipe wall of the liquid passing pipe 108 are uniformly distributed in the circumferential direction of the outer wall of the liquid passing pipe 108 close to the connection part of the liquid passing pipe 108 and the adapter 107, and as shown in fig. 3, inclined teeth are arranged in the middle of the outer wall of the liquid passing pipe 108. Liquid pipe 108 lower part be provided with cylindrical necking down boss the liquid pipe outer wall of crossing of cylindrical necking down boss top on be fixed with spacer sleeve end cap 109 through butt joint shear pin 116 suit, the diapire of spacer sleeve end cap 109 and cylindrical necking down boss reducing department parallel and level setting, preferred butt joint shear pin 116 along spacer sleeve end cap 109 circumference equipartition. A stepped annular groove is arranged at the upper end of a middle hole of the isolating sleeve plug 109, an open ring 115 sleeved on the liquid passing pipe 108 is arranged in a lower annular groove of the stepped annular groove, an open ring plug cap 114 sleeved on the liquid passing pipe is arranged in an upper annular groove of the stepped annular groove, the open ring plug cap 114 compresses the open ring 115, the open ring 115 is in an axial fixed state under the action of the open ring plug cap 114, and the open ring plug cap 114 is in threaded connection with the isolating sleeve plug 109. A sealing ring is arranged at the lower part between the isolation sleeve plug 109 and the liquid passing pipe 108.
The outer wall of the lower end of the liquid passing pipe is connected with a butt joint main body 111 in a threaded sealing mode. The wall surface of the top wall of the butt joint main body 111 is pressed against the wall surface of the reducing part of the cylindrical necking boss, the outer wall of the lower end of the butt joint main body 111 is connected with a butt joint guide head 112 in a threaded sealing manner, the outer wall of the butt joint main body 111 above the top wall of the butt joint guide head 112 is provided with a lower annular boss, the outer wall of the butt joint main body 111 between the top wall of the butt joint guide head 112 and the lower annular boss is sleeved with an upper insulating ring 117, a conducting ring 118 and a lower insulating ring 119 from top to bottom in sequence, sealing rings are respectively arranged between the upper insulating ring 117 and the lower insulating ring 119 and the butt joint main body 111, three sealing ring grooves and sealing rings are respectively arranged on the outer cylindrical surface of the upper insulating ring 117 and the outer cylindrical surface of the lower insulating ring 118, the inner wall of the conducting ring 118 is connected with a cable sealing joint I113 through a first internal lead (namely, the first internal lead is, one end of an upper data cable L1 (namely, one end of an upper data cable L1 penetrates through a compression screw 94, a copper ball 95 and a rubber sleeve 97 of a cable wiring sealing structure in 201510288711.8) and is connected with a first internal lead, the other end of the upper data cable L1 is connected with a wellhead industrial personal computer 306 (shown in figure 12) placed on the ground, and the upper data cable L1 is connected with the first internal lead through a cable sealing joint I113 and is communicated with a conducting ring 118. The outer wall of the upper end of the butt joint guide head 112 is provided with a seal ring groove and a seal ring, the lower part of the seal ring groove of the butt joint guide head 112 is provided with an annular groove, and the lower end head of the butt joint guide head 112 is conical so as to be convenient for guiding.
An isolation sleeve 110 is sleeved outside the butt joint main body 111, the isolation sleeve plug 109 and the lower insulating ring, the upper portion of the isolation sleeve 110 is in threaded sealing connection with the isolation sleeve plug 109, and the bottom portion of the isolation sleeve 110 is in sealing connection with the outer wall cutting sleeve of the lower insulating ring 119 through an inner annular groove.
The cable sealing joint i 113 is mounted at the bottom of the middle hole of the liquid passing pipe 108 and supported on the top wall of the middle hole of the docking body 111. The structure of the cable sealing joint I113 is shown in a schematic diagram of a cable connection sealing structure shown in figure 9 in an intelligent produced well water plugging and production increasing system and a control method thereof (patent number 201510288711.8).
The releasing connector comprises an upper connector 201, the bottom of the upper connector 201 is in threaded sealing connection with a middle threaded hole in the upper portion of a slip main body 202, the upper portion of a releasing piston 204 is installed in a middle hole in the lower portion of the middle threaded hole of the slip main body 202, the releasing piston 204 is fixedly connected with the slip main body 202 through four releasing shearing pins 203 uniformly distributed along the circumferential direction of the slip main body 202, the releasing shearing pins 203 are used for fixing the axial position of the releasing piston 204, an inner hole in the upper end of the releasing piston 204 is of a ball seat structure, the outer wall of the upper end of the releasing piston 204 is of an annular structure, a sealing ring is arranged between the outer wall of the upper end of the releasing piston 204 and the inner wall of the slip main body 202, and a first external annular boss is arranged on the outer wall of the lower. Preferably, a plurality of annular grooves are uniformly distributed on the middle lower part of the slip main body 202 along the circumferential direction to form a structure similar to an elastic claw, so that the middle lower part of the slip main body can have elasticity. A second outer annular boss is provided to protrude outwardly from the outer wall of the lowermost end of the slip body 202 at a position corresponding to the first outer annular boss. The outer wall of the upper end of the releasing piston 204 is provided with an annular shaft shoulder, a circle of annular groove is formed in the inner wall of the slip main body below the annular shaft shoulder, and when the releasing piston 204 falls, the annular shaft shoulder can be supported on the annular groove.
The upper part of a connecting cylinder 205 is sleeved on the outer wall of the lower part of the slip main body 202, the top part of the connecting cylinder is positioned through a shaft shoulder on the outer wall of the slip main body 202, a sealing ring is arranged between the slip main body 202 and the connecting cylinder 205, and the second external annular boss is tightly pressed and clamped on the bottom wall of a positioning boss on the inner wall of the connecting cylinder 205 through the first external annular boss.
The upper part of a transition joint 206 is in threaded connection with an inner threaded hole at the lower end of the connecting cylinder 205, the lower part of the transition joint 206 is in threaded connection with an inner threaded hole at the upper end of the overflowing outer cylinder 208, and the transition joint 206 is respectively and tightly pressed with the bottom wall of the connecting cylinder and the top wall of the overflowing outer cylinder 208 through a joint shaft shoulder arranged in the middle of the outer wall to be positioned. The outer wall of the bottom of the overflowing outer cylinder 208 is in threaded connection with a centering cap 213, and preferably, a guide chamfer structure is arranged on the outer wall of the lower end of the centering cap 213 to improve the passing capacity of the tool in the running process of a pipe column and prevent the tool from being blocked. The inner bottom of the overflowing outer barrel 208 is provided with a sealing wire outlet joint 211, a support step is arranged in a middle hole at the lower end of the centralizing spare cap 213, a third external annular boss arranged on the outer wall at the bottom of the sealing wire outlet joint 211 is clamped between the top wall of the support step and the bottom wall of the overflowing outer barrel 208, one side of the sealing wire outlet joint 211 is provided with a cable outlet hole, an anti-rotation pin II 212 fixedly connected with the sealing wire outlet joint 211 and the overflowing outer barrel 208, the upper part of a connecting short section 214 is in threaded connection with a threaded hole at the lower end of the sealing wire outlet joint 211, the upper part of a receiving basket 215 is connected with a middle threaded hole at the lower end of the connecting short.
The transition joint 206 and the sealed outlet joint 211 are internally and sequentially provided with an abutting joint 207 and a ball locking seat 210 from top to bottom in an overflowing outer cylinder 208, the top of the ball locking seat 210 is in threaded connection with a lower internal threaded hole of the abutting joint 207, an internal threaded hole at the upper end of the abutting joint 207 is in threaded connection with the outer wall of an abutting body spare cap 216, an upper insulating sleeve 217, a conductive sleeve 218 and a lower insulating sleeve 219 are sequentially arranged on the inner wall of a middle hole of the abutting joint 207 between the abutting body spare cap 216 and the ball locking seat 210 from top to bottom, sealing rings are respectively arranged between the upper insulating sleeve 217 and the middle hole of the abutting joint 207 and between the lower insulating sleeve 219 and the conductive sleeve 218, the conductive sleeve 218 is connected with a cable sealing joint II 209 through a second internal lead (namely connected with a cable connection sealing structure in the patent No. 201510288711.8), and the cable sealing joint II 209 is arranged between a gap formed by the abutting joint 210 and the overflowing outer cylinder 207 and between the abutting joint 207 and the overflowing outer cylinder 207 and is connected The lower data cable L2 is connected with the second internal lead by one end and the other end is connected with the downhole layered production allocator (fig. 12), and is connected with the second internal lead by the cable sealing joint ii 209 (i.e. the compression screw 94, the copper ball 95 and the rubber sleeve 97 in the cable wiring sealing structure in patent No. 201510288711.8) and communicated with the conductive sleeve 218.
The cable sealing joint ii 209 is used to realize the liquid-tight insulation of the data cable L2 from the outside after being introduced into the docking joint 207. The cable sealing joint II 209 has the same structure as the cable sealing joint I113, and is shown in a schematic diagram of a cable connection sealing structure shown in figure 9 in an intelligent producer well water plugging and production increasing system and a control method (patent number 201510288711.8).
As shown in fig. 5 and 6, the docking head 207 and the locking ball seat 210 both include a circular ring-shaped body, three protruding arms are uniformly distributed on the outer wall of the circular ring-shaped body, the outer walls of the three protruding arms are matched with the inner wall of the overflowing outer cylinder 208 in shape, the outer walls of the three protruding arms are tightly matched with the inner wall of the overflowing outer cylinder 208, liquid passing channels g are respectively formed between two adjacent protruding arms of the docking head 207 and the overflowing outer cylinder 208 and between two adjacent protruding arms of the locking ball seat 210 and the overflowing outer cylinder 208, a radial threaded hole is formed in the outer wall of one side of the locking ball seat 210 along a direction perpendicular to the axis of the docking body spare cap 216, a locking ball 220 with a spring is installed in the radial threaded hole, a limiting basket 221 is installed in the inner hole in the middle of the locking ball seat 210 and is connected with the two through a shear pin, and the limiting basket 221 is in a ring.
When the cable butt joint male head is guided into the releasing connector of the well under the carrying of the pipe column, the positions between the parts of the cable butt joint male head and the releasing connector are as follows: the liquid passing pipe is arranged in the connecting cylinder 205, the top surface of an inner annular groove at the lower part of the isolating sleeve 110 is clamped with a lower annular boss of the butting body 111, the bottom surface of the inner annular groove is supported on the top surface of a spare cap 216 of the butting body, the split ring 115 is hooked at the position of an oblique tooth at the middle part of the liquid passing pipe 108, the upper insulating sleeve 217 is sleeved on the upper insulating ring 117 to seal the upper insulating ring 117, the lower insulating sleeve 219 is sleeved on the lower insulating ring 119 to seal the lower insulating ring 119, and the conductive sleeve 218 is sleeved on the conductive ring 118 to form conductive connection so that the upper data cable L1 is communicated with the lower data cable L2; the locking ball 220 with a spring is inserted into the annular groove of the docking guide head 112 passing through the middle hole of the locking ball seat 210 to realize docking locking; the retainer basket 221 is supported on the receiving basket 215.
The releasing connector adopts a ball throwing and releasing mode, the ball 222 in fig. 8 is finally located on a ball seat at the upper end of the releasing piston 204, as shown in fig. 8, after the ground is pressurized, the releasing piston 204 shears the releasing shear pin 203 and moves downwards until an annular shaft shoulder at the upper end of the releasing piston 204 reaches the position of an annular groove of the slip main body 202, at the moment, a first annular boss at the lower end of the releasing piston 204 releases a second annular boss at the lower end of the slip main body 202, the slip main body 202 is disconnected with the connecting cylinder 205, the upper joint 201, the slip main body 202 and the releasing piston 204 can be lifted by the lifting pump production string 301, and the rest parts are put in a well as shown in fig. 9.
Fig. 10 shows the final butt joint state of the wet type butt joint device for underground cables, the male joint of the cable butt joint is guided into the releasing connector under the condition that the pipe column carries the male joint, the lower end face of the annular shaft shoulder of the isolation sleeve 110 reaches the upper end face of the butt joint body spare cap 216 and shears the butt joint shear pin 116 under the action of the lower end face, the isolation sleeve 110 and the isolation sleeve plug 109 move upwards, the top surface of the annular groove in the isolation sleeve 110 finally reaches the lower annular boss of the butt joint body 111 to be clamped, and as shown in fig. 11, the split ring 115 is positioned at the inclined tooth position in the middle of the liquid passing pipe 108; the upper insulating ring 117 forms a seal with the upper insulating sleeve 217, the lower insulating ring 119 forms a seal with the lower insulating sleeve 219, and the conductive ring 118 forms a conductive connection with the conductive sleeve 218, such that the upper data cable L1 and the lower data cable L2 are in communication; the lock ball 220 with a spring is positioned at the annular groove of the butt joint guide head 112 to realize butt joint locking; the retainer basket 221 is cut off the pin and dropped onto the upper portion of the receiving basket 215.
The use method for realizing the releasing butt joint and the wet electric connection of the pipe column by using the underground cable wet butt joint device for the oil well comprises the following steps:
(1) the lower end of the release connector 303 shown in FIG. 12 is connected to a separate tubular string 304, and the upper end is connected to a drill pipe (or tubing) to form a release tubular string and run into the well with the tubular string.
(2) After the pipe column reaches a preset position, the ball is thrown at the well mouth, meanwhile, the ball is chased with small displacement and finally falls on the ball seat at the upper end of the releasing piston 204, at the moment, the well mouth is pressurized, the releasing piston 204 shears the releasing shear pin 203 under the hydraulic acting force and then moves downwards to the position of the annular groove of the slip main body 202, the second external annular boss at the lower end of the slip main body 202 is separated from the positioning boss on the inner wall of the connecting cylinder 205, the slip main body 202 is separated from the connecting cylinder 205, and therefore the whole pipe column is released.
(3) The release string is lifted up, the release connector 303, the slip body 202 and above are pulled out with the string, and the connector barrel 205 and below are placed downhole.
(4) The cable butt joint male head 302 is connected to the lowest end of the electric pump production pipe column 301 through an oil pipe short joint, and after the electric pump production pipe column 301 is put down in place, the cable butt joint male head 302 reaches the position of the spacing flower basket 221 of the releasing connector 303 and shears the pin.
(5) The wellhead scribing tubing is connected with the tubing hanger, the tubing hanger is placed into the Christmas tree by lowering the tubing string, the cable butt male head 302 is smoothly guided into the releasing connector 303, the conducting ring 118 of the cable butt male head 302 is in contact with the conducting sleeve 218 of the releasing connector 302 to form a conducting connection state, the upper insulating ring 117 and the lower insulating ring 119 of the cable butt male head 302 are in contact with the upper insulating sleeve 217 and the lower insulating sleeve 219 of the releasing connector to form sealing insulation, the upper data cable L1 and the lower data cable L2 form complete conducting sealing insulation connection under the action of a downhole cable wet-type butt joint device, and complete line connection is established between the wellhead industrial personal computer and the downhole layered production allocator.
(6) After the butting, the wellhead industrial personal computer is powered on and sends an instruction to the underground layered production allocator, and if the wellhead industrial personal computer can normally receive the data returned by the underground layered production allocator, whether the butting is successful or not is judged. Otherwise, lifting the pipe column and repeating the step (5).
The technical solutions of the present invention are schematically described above with reference to the drawings and the embodiments, but the present invention is not limited to the specific embodiments described above. It will be appreciated by those skilled in the art that in practice, certain changes in the configuration or arrangement of the production string and the particular steps of the production method of the present invention are possible, and other similar designs will be possible in light of the teaching of those skilled in the art. In particular, it is pointed out that all obvious modifications are included within the scope of protection of the invention, without departing from the design spirit thereof.
Claims (5)
1. The utility model provides an oil well is with cable wet-type interfacing apparatus in pit which characterized in that: the cable butt joint device comprises a cable butt joint male joint and a releasing connector;
the cable butt joint male joint comprises an oil pipe nipple (101), the lower part of the oil pipe nipple is in threaded connection with an internal threaded hole of an outlet joint (104) through external threads, the longitudinal section of the outlet joint is of an inverted convex structure, the outlet joint is sleeved in a middle opening of an upper end righting device (103), the top surface of a diameter large end of the inverted convex structure is tightly pressed on an upper positioning boss in the middle opening, the upper part of a butt joint outer cylinder (105) is inserted in an annular gap between the outlet joint and the upper end righting device and is in threaded connection with the middle opening of the upper end righting device, the top wall of the butt joint outer cylinder tightly presses the bottom wall of the diameter large end of the outlet joint inverted convex structure, a cable hole is formed in one side of the outlet joint, an anti-rotation pin hole is formed in the other side of the outlet joint, an anti-rotation pin I (102) is installed in the anti-rotation pin hole, and the outlet joint outer, the lower end barrel of the butt joint outer barrel is in threaded connection with a middle threaded hole of a lower end righting device (106), the inner wall of the lower end of a middle opening of the butt joint outer barrel is in threaded connection with an adapter (107), and the adapter is tightly pressed and positioned with the bottom wall of the butt joint outer barrel through a positioning boss arranged on the adapter;
the upper end body of a liquid passing pipe (108) is in threaded connection with the lower end of the middle threaded hole of the adapter (107), a through hole of a plurality of liquid passing pipe walls is uniformly distributed in the circumferential direction of the outer wall of the liquid passing pipe close to the connection part of the liquid passing pipe and the adapter, inclined teeth are arranged in the middle of the outer wall of the liquid passing pipe, a cylindrical necking boss is arranged on the lower portion of the liquid passing pipe, a spacer plug (109) is fixed on the outer wall of the liquid passing pipe above the cylindrical necking boss through a butt joint shearing pin (116) in a sleeved mode, the bottom wall of the spacer plug and the reducing position of the cylindrical necking boss are arranged in a parallel and level mode, a step ring groove is arranged at the upper end of the middle hole of the spacer plug, a split ring (115) sleeved on the liquid passing pipe (108) is installed in the lower ring groove of the step ring groove, and a split ring plug cap (114) sleeved, the split ring is tightly pressed by the split ring plugging cap, the split ring plugging cap is in threaded connection with the isolating sleeve plug, and a sealing ring is arranged at the lower part between the isolating sleeve plug and the liquid passing pipe;
the outer wall of the lower end of the liquid passing pipe is connected with a butt joint body (111) in a threaded sealing manner, the wall of the butt joint body is tightly pressed against the wall of the reducing part of the cylindrical necking boss, the outer wall of the lower end of the butt joint body is connected with a butt joint guide head (112) in a threaded sealing manner, the outer wall of the butt joint body above the top wall of the butt joint guide head is provided with a lower annular boss, an upper insulating ring (117), a conducting ring (118) and a lower insulating ring (119) are sequentially sleeved on the outer wall of the butt joint body between the top wall of the butt joint guide head and the lower annular boss from top to bottom, sealing rings are respectively arranged between the upper insulating ring and the butt joint body and between the lower insulating ring and the butt joint body, three sealing ring grooves and sealing rings are respectively arranged on the outer cylindrical surface of the upper insulating ring and the outer cylindrical surface of the lower insulating ring, the inner wall of the conducting ring, the other end of the cable is connected with a wellhead industrial personal computer arranged on the ground, the cable is connected with a first internal lead through a cable sealing joint I and communicated with the conducting ring, a sealing ring groove is formed in the outer wall of the upper end of the butt joint guide head and provided with a sealing ring, an annular groove is formed in the lower portion of the sealing ring groove of the butt joint guide head, an isolation sleeve (110) is sleeved outside the butt joint main body (111), an isolation sleeve plug (109) and a lower insulating ring, the upper portion of the isolation sleeve is in threaded sealing connection with the isolation sleeve plug (109), the bottom of the isolation sleeve plug is in sealing connection with a clamping sleeve on the outer wall of the lower insulating ring (119) through an inner annular groove, and the cable sealing joint I (113) is installed at the bottom of a middle hole of;
the releasing connector comprises an upper connector (201), the bottom of the upper connector is in threaded sealing connection with a middle threaded hole at the upper part of a slip main body (202), the upper part of a releasing piston (204) is arranged in a middle hole at the lower part of the middle threaded hole of the slip main body, the releasing piston is fixedly connected with the slip main body through four releasing shearing pins (203) which are uniformly distributed along the circumferential direction of the slip main body, an inner hole at the upper end of the releasing piston is of a ball seat structure, the outer wall at the upper end of the releasing piston is of an annular structure, a sealing ring is arranged between the outer wall at the upper end of the releasing piston and the inner wall of the slip main body, a first external annular boss is arranged on the outer wall at the lower end of the releasing piston in a protruding mode outwards, a second external annular boss is arranged on the outer wall at the lowest end of the slip main body, which corresponds to the first external annular boss, and, a circle of annular groove is formed in the inner wall of the slip main body below the annular shaft shoulder, and when the releasing piston falls down, the annular shaft shoulder can be supported on the annular groove;
the upper part of a connecting cylinder (205) is sleeved on the outer wall of the lower part of the slip main body, the top of the connecting cylinder is positioned through a shaft shoulder on the outer wall of the slip main body, a sealing ring is arranged between the slip main body and the connecting cylinder, and the second external annular boss is tightly pressed and clamped on the bottom wall of a positioning boss on the inner wall of the connecting cylinder through a first external annular boss;
the upper part of a transition joint (206) is in threaded connection with an inner threaded hole at the lower end of a connecting cylinder, the lower part of the transition joint is in threaded connection with an inner threaded hole at the upper end of an overflowing outer cylinder (208), the transition joint (206) is respectively pressed and arranged with the bottom wall of the connecting cylinder and the top wall of the overflowing outer cylinder through a joint shaft shoulder arranged in the middle of the outer wall to be positioned, a righting spare cap (213) is in threaded connection with the outer wall at the bottom of the overflowing outer cylinder, a sealing outlet joint (211) is arranged at the inner bottom of the overflowing outer cylinder (208), a supporting step is arranged in a middle hole at the lower end of the righting spare cap, a third external annular boss arranged on the outer wall at the bottom of the sealing outlet joint is clamped and fixed between the top wall of the supporting step and the bottom wall of the overflowing outer cylinder (208), a cable outlet hole and an anti, the upper part of the connecting short section (214) is in threaded connection with a threaded hole at the lower end of the sealed wire outlet joint, the upper part of the receiving basket (215) is connected with a middle threaded hole at the lower end of the connecting short section, and the receiving basket is in an annular body structure;
the transition joint (206) and the sealed wire outlet joint (211) are internally provided with an overflow outer cylinder (208) which is internally provided with a butt joint (207) and a ball locking seat (210) from top to bottom in sequence, the top of the ball locking seat (210) is in threaded connection with an inner threaded hole at the lower part of the butt joint (207), an inner threaded hole at the upper end of the butt joint is in threaded connection with the outer wall of a spare cap (216) of a butt joint body, an upper insulating sleeve (217), a conductive sleeve (218) and a lower insulating sleeve are sequentially arranged on the inner wall of a middle hole of the butt joint between the spare cap of the butt joint body and the ball locking seat (210) from top to bottom, sealing rings are respectively arranged between the upper insulating sleeve (217) and the lower insulating sleeve, the conductive sleeve is connected with a cable sealing joint II (209) through a second internal lead, and the cable sealing joint II is arranged between the ball locking seat (210) and a gap formed by the overflow joint and the outer cylinder and is in threaded sealing connection with the butt joint One end of a lower data cable L2 is connected with a second inner lead, and the other end of the lower data cable L2 is connected with a downhole layered production allocator;
the butt joint (207) and the ball locking seat both comprise circular ring-shaped bodies, three convex arms are uniformly distributed on the outer wall of each circular ring-shaped body, the outer walls of the three convex arms are matched with the inner wall of the overflowing outer barrel in shape, the outer walls of the three convex arms are tightly matched with the inner wall of the overflowing outer barrel, liquid passing channels are respectively formed between every two adjacent convex arms of the butt joint (207) and the overflowing outer barrel and between every two adjacent convex arms of the ball locking seat and the overflowing outer barrel, radial threaded holes are formed in the outer wall of one side of the ball locking seat in the direction perpendicular to the axis of a butt joint body spare cap (216), locking balls (220) with springs are installed in the radial threaded holes, a limiting flower basket is installed in an inner hole in the middle of the ball locking seat and is connected with the limiting flower basket through shearing pins, and the limiting flower basket (221) is of a ring;
when the cable butt joint male head is guided into the releasing connector of the well under the carrying of the pipe column, the positions between the parts of the cable butt joint male head and the releasing connector are as follows: the liquid passing pipe is arranged in the connecting cylinder (205), the top surface of an inner annular groove at the lower part of the isolating sleeve (110) is clamped with a lower annular boss of the butting body (111), the bottom surface of the inner annular groove is supported on the top surface of a butting body cap (216), the split ring (115) is hooked at the position of a middle oblique tooth of the liquid passing pipe (108), the upper insulating sleeve (217) is sleeved on the upper insulating ring (117) in a hooping way to seal the upper insulating ring and the lower insulating ring, the lower insulating sleeve (219) is sleeved on the lower insulating ring (119) to seal the lower insulating ring and the lower insulating ring, and the conductive sleeve (218) is sleeved on the conductive ring (118) to form conductive connection so that the upper data cable L1 is communicated with the lower data cable L2; a lock ball (220) with a spring is inserted into an annular groove of the butt joint guide head (112) which passes through a middle hole of the lock ball seat (210) to realize butt joint locking; the position-limiting flower basket (221) is supported on the bearing flower basket (215).
2. An oil well downhole cable wet docking device according to claim 1, wherein: the butt joint shearing pins are uniformly distributed along the circumferential direction of the isolation sleeve plugs.
3. An oil well downhole cable wet docking device according to claim 1 or 2, wherein: the lower end of the butt joint guide head is conical.
4. An oil well downhole cable wet docking device according to claim 3, wherein: a plurality of annular grooves are uniformly distributed on the middle lower part of the slip main body along the circumferential direction to form a structure similar to an elastic claw.
5. An oil well downhole cable wet docking device according to claim 3, wherein: a guide chamfer structure is arranged on the outer wall of the lower end of the centralizing spare cap.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910634196.2A CN110485943B (en) | 2019-07-15 | 2019-07-15 | Wet-type butt joint device for underground cable for oil well |
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| CN201910634196.2A CN110485943B (en) | 2019-07-15 | 2019-07-15 | Wet-type butt joint device for underground cable for oil well |
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| CN110485943A CN110485943A (en) | 2019-11-22 |
| CN110485943B true CN110485943B (en) | 2020-11-06 |
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| CN201910634196.2A Active CN110485943B (en) | 2019-07-15 | 2019-07-15 | Wet-type butt joint device for underground cable for oil well |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111255386B (en) * | 2020-01-15 | 2020-08-11 | 大庆黑帝庙稠油试采技术开发有限公司 | Horizontal well segmented oil production process pipe column |
| CN112366622B (en) * | 2020-11-02 | 2021-11-05 | 长江大学 | Cable-pipe integrated continuous pipe connector assembly |
| CN113029209B (en) * | 2021-04-01 | 2022-04-05 | 山东大学 | A unipolar capacitive sensor and joint device |
| CN115387733B (en) * | 2021-05-24 | 2025-01-28 | 中国石油化工股份有限公司 | A downhole rotary jet eddy current tool |
| CN113612035B (en) * | 2021-05-26 | 2024-03-12 | 中国海洋石油集团有限公司 | Underground wet connector |
| CN115680545B (en) * | 2021-07-28 | 2025-01-28 | 中国石油天然气集团有限公司 | Steel coiled tubing downhole cable passing bypass nipple |
| CN116411818A (en) * | 2021-12-31 | 2023-07-11 | 中国石油天然气股份有限公司 | An underground cable wet docking device, related mechanism, system and method |
| CN114524423A (en) * | 2022-03-16 | 2022-05-24 | 山东永达环保科技有限公司 | Regenerating device for pickling waste phosphoric acid by chemical method |
| CN114991760A (en) * | 2022-05-11 | 2022-09-02 | 中国海洋石油集团有限公司 | Underground bridle head structure with double-layer clamping pipes and using method thereof |
| CN117307052A (en) * | 2022-06-20 | 2023-12-29 | 中国石油天然气集团有限公司 | Cabled drill rod and manufacturing method thereof |
| CN115411548A (en) * | 2022-08-24 | 2022-11-29 | 西安弘成能源科技有限公司 | A method for hydraulically pushing wet joints of cables |
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| US10050375B1 (en) * | 2017-10-06 | 2018-08-14 | Baker Hughes, A Ge Company, Llc | Direct conductor seal for submersible pump electrical connector |
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| US9366094B2 (en) * | 2012-11-30 | 2016-06-14 | Intelliserv, Llc | Pipe joint having coupled adapter |
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| CN202073553U (en) * | 2011-04-28 | 2011-12-14 | 东营市华诚石油科技有限责任公司 | Quick butt-joint tool for downhole logging instruments |
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