CN115095282B - Motor-controlled releasable headstall well logging method and headstall structure - Google Patents
Motor-controlled releasable headstall well logging method and headstall structure Download PDFInfo
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- CN115095282B CN115095282B CN202210687508.8A CN202210687508A CN115095282B CN 115095282 B CN115095282 B CN 115095282B CN 202210687508 A CN202210687508 A CN 202210687508A CN 115095282 B CN115095282 B CN 115095282B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000009471 action Effects 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 229920001971 elastomer Polymers 0.000 claims description 63
- 239000000806 elastomer Substances 0.000 claims description 63
- 238000001514 detection method Methods 0.000 claims description 46
- 210000001503 joint Anatomy 0.000 claims description 34
- 230000008859 change Effects 0.000 claims description 15
- 230000003578 releasing effect Effects 0.000 claims description 12
- 230000002159 abnormal effect Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 238000003032 molecular docking Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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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
- E21B17/021—Devices for subsurface connecting or disconnecting by rotation
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/02—Rulers with scales or marks for direct reading
- G01B3/04—Rulers with scales or marks for direct reading rigid
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention discloses a motor-controlled releasable headstall well logging method and headstall structure, the well logging method is as follows: when the headstall assembly and the detachable assembly enter a well for logging, if the headstall assembly encounters a clamp, an electric control assembly in the headstall assembly executes a release action to enable the headstall assembly to release the limitation on the detachable assembly, and external force pulls out the detachable assembly, so that the separation action of the headstall assembly and the detachable assembly can be completed. The invention provides a motor control releasable headstall well logging method and a headstall structure, which can effectively unclamp in a motor control mode and can also check a motor circuit.
Description
Technical Field
The present invention relates to the field of well logging, and in particular to the field of releasable bridles.
Background
The electronic controllable weak point is adopted to replace the traditional mechanical fixed value weak point, and the separation of the cable and the instrument string is realized without the mechanical weak point of the cable tension; when the instrument string is in a well and is in a condition of blocking or the like, and the instrument string is required to be separated from the cable, an instruction can be issued to the releasable headstock through ground equipment, and the cable is separated from the instrument string through a release mechanism of the releasable headstock;
The motor-driven release mode is directly suitable for logging ground systems and compatible systems, the mechanical release structure is adopted, the release mechanism is driven by a motor-controlled mode, the operation instruction is reliable, the movement is accurate, and compared with a fuse-type releasable headstall, the mechanical release mechanism has great advantages in operation and control; the release mechanism adopts high-strength corrosion-resistant high-temperature alloy steel and has a safety weak point function; and a multistage safety control mode is adopted, so that the release is ensured to be reliable under extreme conditions.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides a motor control releasable headstall logging method and a headstall structure, which can effectively unclamp in a motor control mode and can also check a motor circuit.
The technical scheme is as follows: in order to achieve the above purpose, the technical scheme of the invention is as follows:
A motor-controlled releasable headstall logging method comprises the following steps: when the headstall assembly and the detachable assembly enter a well for logging, if the headstall assembly encounters a clamp, an electric control assembly in the headstall assembly executes a release action to enable the headstall assembly to release the limitation on the detachable assembly, and external force pulls out the detachable assembly, so that the separation action of the headstall assembly and the detachable assembly can be completed.
Further, the halter assembly and the detachable assembly are unclamped by the steps of:
S1: when normal logging is performed, the release elastomer of the detachable assembly stretches into the release connecting sleeve in the headstall assembly, and the limit pull rod of the headstall assembly penetrates through the release elastomer and is limited to the release elastomer;
s2: when the separation action is required, the electric control assembly drives the limit pull rod to move in the release elastomer; the limiting end of the limiting pull rod is separated from the release elastomer, so that the limiting pull rod releases the limitation of the release elastomer;
s3: the external force pulls the detachable component to move, and the elastic body is released to separate from the bridle component; the halter component and the detachable component are separated by unlocking.
Further, one end of the release elastic body extending into the release connecting sleeve is bifurcated to form a bifurcation end; one end of the limiting pull rod is an enlarged end; the other end of the limiting pull rod gradually decreases and penetrates into the release elastomer; the electric control assembly drives the limit pull rod to axially reciprocate along the release elastomer; when the increasing end is embedded into the bifurcation end, the increasing end pushes the bifurcation end to be embedded into a limiting groove of the inner wall of the release connecting sleeve; the bifurcated end is capable of radial movement as the enlarged end moves out of the bifurcated end.
Furthermore, the bifurcation end is formed by arranging a plurality of elastic strips at intervals in the circumferential direction; the edges of one end, close to the limiting pull rod, of the elastic strips are respectively fixedly provided with a bump; the movement of the enlarged end pushes the protruding block to be clamped into the limiting groove for locking; the tab is radially movable when the enlarged end moves out of position with the tab.
Further, the headstall assembly includes a headstall housing; the middle parts of the headstall shells are spliced together through an intermediate joint; an installation pipe body is fixedly arranged at one end of the middle joint; the release connecting sleeve is adaptively clamped in the installation tube body.
Further, a movable hole is formed in the middle of the middle joint in a penetrating manner, and the movable hole is communicated with the release elastomer; the screw rod of the electric control assembly penetrates through the movable hole; the motor is in driving connection with one end of the screw rod through the screw nut; the other end of the screw rod is embedded in the limit pull rod; the screw rod drives the limit pull rod to move back and forth.
Further, the detachable assembly includes a docking cylinder block; one end of the guide connection cylindrical block is spliced with the release elastomer; the other end of the guide connection cylindrical block is connected with a cable through a connecting rod; a butt joint hole is formed in the middle of the guide joint cylindrical block in a penetrating manner; a screwed plug hole corresponding to the butt joint hole is formed in the headstock shell; the reducing end of the limiting pull rod can penetrate into the butt joint hole.
Further, an external force action detection tool is inserted into the butt joint hole from the plug hole; the detection tool is matched with the reducing end of the limiting pull rod to detect the state of releasing the elastomer; the detection tool detects the state change of the released elastomer, so that the circuit of the electric control assembly is ensured to be normal; and after the detection tool detects that the released elastomer is in a locking state finally, the tool can be put into the well for use.
Further, the marks on the detection tool represent a locking state, an abnormal state and a release state respectively; the checking method of the electric control assembly circuit comprises the following steps:
the first step: inserting a detection tool into the docking aperture; then observing the positions of the marks on the detection tool and the edges of the plug holes; when the release elastomer is determined to be in a locking state, the detection tool is pulled out, and the motor is positively charged to change the state; the state change is: locking state-abnormal state-release state; after the motor stops rotating, inserting the detection tool into the butt joint hole, confirming that the release elastic piece is in a release state, and then pulling out the detection tool;
And a second step of: supplying power to the motor reversely to change the state; the state change is: releasing state-abnormal state-locking state; when the motor is stopped, a detection tool is inserted into the butt joint hole to perform state detection, and the release elastomer is confirmed to be in a locking state;
And a third step of: and taking out the detection tool to close the plug hole, thereby completing the detection of the electric control assembly circuit, ensuring that the release elastomer is in a locking state, and logging.
The beneficial effects are that: the state graduated scale can detect the state of the released elastomer before logging so as to ensure that the released elastomer is in a locking state and the circuit of the electric control assembly is normal during logging and ensure the safety and the reliability of the headstall assembly; the situation that the elastomer is released easily to be separated in the logging process is avoided, and normal logging is ensured; when the user needs to unclamp, the motor can control the limiting pull rod to unclamp and release the elastic body, and then the released elastic body can be pulled out of the headstall pipe body through small pulling force, so that the purpose of unclamp is achieved; and the condition that the cable is easily broken can be avoided, and the purpose of salvaging is achieved.
Drawings
FIG. 1 is a flowchart of a method for unlocking;
FIG. 2 is a block diagram of a headstall assembly;
FIG. 3 is a diagram of an intermediate joint structure;
FIG. 4 is a block diagram of a detachable assembly;
FIG. 5 is a diagram of a structure of a released elastomer;
Fig. 6 is a diagram of the status scale.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-6: a motor-controlled releasable headstall logging method comprises the following steps: when the headstall assembly and the detachable assembly enter a well for logging, if the headstall assembly encounters a clamp, an electric control assembly in the headstall assembly executes a release action to enable the headstall assembly to release the limitation on the detachable assembly, and external force pulls out the detachable assembly, so that the separation action of the headstall assembly and the detachable assembly can be completed. When the headstall meets a card, the electric control component can be controlled to execute the release action through the ground, so that the purpose of releasing the detachable component is achieved, the detachable component can be pulled out easily, and further, the cable of the detachable component is prevented from being broken, and the protection effect is achieved.
The halter assembly and the detachable assembly are released by the steps of:
S1: when normal logging is performed, the release elastomer 1 of the detachable assembly stretches into the release connecting sleeve 2 in the headstall assembly, and the limit pull rod 3 of the headstall assembly penetrates through the release elastomer 1 and is limited to the release elastomer 1; thereby locking the release elastomer, and the release elastomer is not easy to be separated from the headstall assembly after locking; and well logging can be performed well.
S2: when the separation action is required, the electric control assembly drives the limit pull rod 3 to move in the release elastomer 1; the limiting end of the limiting pull rod 3 is separated from the release elastomer 1, so that the limiting pull rod 3 releases the limitation of the release elastomer 1;
S3: the external force pulls the detachable component to move, and the elastic body 1 is released to separate from the bridle component; the halter component and the detachable component are separated by unlocking. When the electric control assembly drives the limit pull rod to release the limit of the elastic body, the external force pulls the cable on the detachable assembly, so that the detachable assembly can be integrally pulled out of the headstall assembly; and then realize the separation of headstall subassembly and detachable subassembly, reach motor control and unclamp purpose.
One end of the release elastomer 1 extending into the release connecting sleeve 2 is bifurcated to form a bifurcation end; one end of the limiting pull rod 3 is an enlarged end 31; the other end of the limiting pull rod 3 gradually decreases and penetrates into the release elastomer 1; the electric control assembly drives the limit pull rod 3 to axially reciprocate along the release elastomer 1; when the enlarged end 31 is embedded in the bifurcation end, the enlarged end 31 pushes the bifurcation end to be embedded in the limiting groove 21 of the inner wall of the release connecting sleeve 2; the diverging ends are capable of radial movement as the enlarged ends 31 move out of the diverging ends. The increase end of the limiting pull rod moves into the bifurcation end and pushes the bifurcation end to be clamped into the limiting groove, and then the release elastomer is limited in the release connecting sleeve, so that the locking state is achieved, further logging can be performed, and locking between the release elastomer and the release connecting sleeve is required to be ensured during logging.
The bifurcation end is formed by arranging a plurality of elastic strips 11 at intervals in the circumferential direction; the edges of one end, close to the limiting pull rod 2, of the elastic strips 11 are respectively fixedly provided with a bump 12; the projection 12 is adapted to be positioned in the limit slot 21; the enlarged end 31 moves to push the lug 12 to be clamped into the limiting groove 21 for locking; the enlarged end 31 moves radially away from the location of the tab 12, and the tab 12 moves radially. Because of the arrangement mode of the elastic strips, and the protruding blocks are arranged on the elastic strips, when the elastic strips are positioned in the release connecting sleeve, the protruding blocks are abutted against the inner wall of the release connecting sleeve, the protruding blocks can be adaptively embedded into the limiting grooves, and then when the increasing end moves to the limiting groove, the protruding blocks can be abutted against and clamped in the limiting grooves, so that the protruding blocks are limited, and the aim of releasing the locking of the elastic bodies is fulfilled; when the increasing end moves out of the release connecting sleeve, the limit on the convex block is released, and then the convex block can be easily pulled out of the limit groove by pulling the release elastic body by external force, so that the purpose of release is achieved.
The headstall assembly comprises a headstall housing 4; the middle parts of the headstall shells 4 are spliced together through an intermediate joint 41; the two ends of the headstall shell are respectively sleeved on the two ends of the middle joint in a ring mode, and a sealing ring is arranged between the middle joint and the headstall shell; a mounting pipe 411 is fixedly arranged on one end of the middle joint 41; the release connecting sleeve 2 is adaptively clamped in the mounting pipe 411; the release connecting sleeve is limited to be an integral structure through the installation pipe body and the middle joint, and when the release elastomer can be matched with the release connecting sleeve to carry out corresponding release and locking actions.
A movable hole 412 is formed in the middle of the middle joint 41 in a penetrating manner, and the movable hole 412 is communicated with the release elastomer 1; the screw rod 5 of the electric control assembly penetrates through the movable hole 412; the motor is in driving connection with one end of the screw rod 5 through a screw nut; the other end of the screw rod 5 is embedded in the limit pull rod 3; the screw rod 5 drives the limit pull rod 3 to move back and forth. An electric appliance plug connector is arranged at one end of the headstock shell corresponding to the electric control assembly, an interval where the electric control assembly is located is arranged in a closed mode, and one end of the headstock shell pipe body, provided with the electric appliance plug connector 7, is connected with other parts through a lower connector; the inner wall of the movable hole 412 is provided with a containing cavity 413 in a circumferential direction; a triggering device 414 is arranged on the inner wall of the accommodating cavity 413, which is close to one side of the motor; the trigger device is a travel switch; a limiting block 51 is arranged on the screw rod 5 in the accommodating cavity 413; the screw rod 5 drives the limiting block 51 to reciprocate in the accommodating cavity 413, and when the limiting block 51 abuts against a contact point on the triggering device 414, the screw rod 5 drives the increasing end 31 of the limiting pull rod 3 to move out of the releasing elastomer 1. When the motor drives the screw to drive the screw rod to move and the screw rod drives the limit pull rod to move, the limit block touches the contact point on the travel switch or is far away from the contact point on the travel switch; when the limiting block touches a contact point on the travel switch, the controller in the electric control assembly cuts off the power supply of the motor, so that the current on the direct current plate of the electric control assembly is zero, and the release elastomer can be judged to be in a release state according to the current.
The detachable component comprises a guide connection cylindrical block 6; one end of the guide connection cylindrical block 6 is spliced with the release elastomer 1; the other end of the guide connection cylindrical block 6 is connected with a cable through a connecting rod; a butt joint hole 61 is formed in the middle of the guide joint cylindrical block 6 in a penetrating manner; the headstall shell 4 is provided with a screwed plug hole 42 corresponding to the butt joint hole 61; the reducing end of the limiting pull rod 3 can penetrate into the butt joint hole 61; a slotted hole 62 communicated with the middle part of the release elastomer is formed in the guide connection cylindrical block; the slotted hole 62 and the butt joint hole 61 are mutually perpendicular and are cross-shaped; when logging operations are performed, the plug holes are closed by plugs, and when the detection tool state graduated scale 8 is inserted into the butt joint holes and the plug holes before logging is performed, the state of releasing the elastic body is checked, so that the state of locking during logging operations is ensured.
The external force detection tool is inserted into the butt hole 61 from the plug hole 42; the state of releasing the elastic body 1 can be detected by the detection tool matched with the reducing end of the limit pull rod 3; the detection tool detects the state change of the released elastic body 1, so that the circuit of the electric control assembly is ensured to be normal; and after the detection tool detects that the released elastic body 1 is in a locking state finally, the device can be put into a well for use. Along the direction of inserting one end of the state graduated scale, the state graduated scale is marked with 'release', 'abnormal' and 'locking' characters at intervals in sequence; a notch 81 is formed in the insertion end of the state graduated scale in a penetrating way; when the state graduated scale is inserted into the butt joint hole, the notch is communicated with the communication hole; when one end of the limiting pull rod is reduced and moves into the communication hole, and the other end of the limiting pull rod is enlarged and positioned at the limiting groove position, the state graduated scale is inserted into the butt joint hole, but is limited by the reduced end of the limiting pull rod, so that the reduced end of the limiting pull rod exceeds the position of the butt joint hole, the insertion length of the state graduated scale is short, a locking word can be seen from the plug hole, and the release elastomer is locked and is in a locking state; when the limiting pull rod is positioned at the position of the butt joint hole at the reduced end, the state graduated scale can be continuously inserted downwards, the notch is clamped on the reduced end of the limiting pull rod until the limiting pull rod cannot be downwards, and an abnormal character can be seen from the plug hole at the moment, so that the release elastomer is in an abnormal state (not fully locked); when the state graduated scale can be completely inserted into the butt joint hole, one end of the limit pull rod is reduced and does not move to the position of the butt joint hole, one end of the limit pull rod is increased and does not move to the position of the limit groove, and the limit block can touch the contact point of the limit switch, so that the release elastomer is in a release state.
The marks on the detection tool respectively represent a locking state, an abnormal state and a release state; if the state is abnormal or released after detection, the state must be restored to the locking state; the motor is started to rotate to drive the screw rod to move, the screw rod drives the limiting pull rod to do linear motion in the direction away from the motor through the screw rod, one end of the limiting pull rod is reduced to move into the communicating hole, and one end of the limiting pull rod is increased to move to the limiting groove position, so that radial movement of the protruding block on the release elastomer can be restrained, and the release elastomer and the release connecting sleeve are in a locking state; in the process, the current display condition of the direct current power supply is kept concerned at all times, when the limit pull rod is in place, the motor is blocked, the current suddenly and rapidly increases, the power supply of the motor is immediately cut off, the motor is prevented from being damaged, and then the state detection is carried out; after the state detection is finished (in a locking state), the screwed plug is installed and screwed back to the position of the screwed plug hole; and further logging work is carried out, and the safety and reliability of the headstall assembly are ensured.
The checking method of the electric control assembly circuit comprises the following steps:
The first step: inserting a detection tool into the docking hole 61; then observing the positions of the marks on the detection tool and the edges of the plug holes; when the release elastomer 1 is determined to be in a locking state, the detection tool is pulled out, and the motor is positively charged to change the state; the state change is: locking state-abnormal state-release state; after the motor stops rotating, inserting the detection tool into the butt joint hole 61, confirming that the release elastic piece 1 is in a release state, and then pulling out the detection tool;
And a second step of: supplying power to the motor reversely to change the state; the state change is: releasing state-abnormal state-locking state; when the motor is stopped, a detection tool is inserted into the butt joint hole 61 to perform state detection, and the release elastomer 1 is confirmed to be in a locking state;
And a third step of: and taking out the detection tool to close the plug hole, thereby completing the detection of an electric control assembly circuit, ensuring that the release elastomer 1 is in a locking state, and logging. If abnormal state occurs, the cause needs to be found out, and the well can be accessed after the fault is eliminated. Confirming that the state is normal: when the well is put into the well, the headstall assembly is required to be confirmed to be in a locking state, so that the accident that the instrument accidentally falls into the well is prevented; confirm that the function is normal: the headstall subassembly release function only uses when salvaging the operation, and the use probability is little, if not inspect for a long time, equipment can not normally work in the key time, will lead to cable release failure, causes the loss.
When the headstall assembly is blocked in the well logging process, the salvaging operation of the instrument in the headstall assembly is required; the cable is required to be separated from the instrument, the electric control assembly can be used for separating the cable from the instrument through the operation of a ground system, and then the unlocking action can be realized with smaller pulling force; because the internal structure of the releasable headstall has relatively high strength compared with the traditional mechanical weakness, the releasable headstall can allow an on-site operation engineer to pull the cable of the releasable structure through the winch to obtain larger pulling force to release the clamp when the instrument encounters the clamp, the blockage and the like; compared with the traditional mechanical weakness mode, the motor control mode releasing card can better protect the cable and prevent the cable from being broken in the pulling process.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and it is apparent to those skilled in the art that modifications and variations can be made without departing from the above-described principle of the present invention, and these modifications and variations are also regarded as the scope of the invention.
Claims (1)
1. A motor-controlled releasable headstall logging method is characterized in that the logging method comprises the following steps: when the headstall assembly and the detachable assembly enter a well for logging, if the headstall assembly is blocked, an electric control assembly in the headstall assembly executes a releasing action to enable the headstall assembly to release the limitation on the detachable assembly, and external force pulls out the detachable assembly, so that the separating action of the headstall assembly and the detachable assembly can be completed;
the halter assembly and the detachable assembly are released by the steps of:
S1: when normal logging is performed, the release elastomer (1) of the detachable assembly stretches into the release connecting sleeve (2) in the headstall assembly, and the limit pull rod (3) of the headstall assembly penetrates through the release elastomer (1) and is limited to the release elastomer (1);
s2: when the separation action is required, the electric control assembly drives the limit pull rod (3) to move in the release elastomer (1); the limiting end of the limiting pull rod (3) is separated from the release elastomer (1), so that the limiting pull rod (3) releases the limitation on the release elastomer (1);
s3: the external force pulls the detachable component to move, and the elastic body (1) is released from the bridle component; the halter component and the detachable component are separated by unlocking;
One end of the release elastic body (1) extending into the release connecting sleeve (2) is bifurcated, and is a bifurcation end; one end of the limiting pull rod (3) is an enlarged end (31); the other end of the limiting pull rod (3) gradually decreases and penetrates into the release elastomer (1); the electric control assembly drives the limit pull rod (3) to axially reciprocate along the release elastomer (1); when the increasing end (31) is embedded into the bifurcation end, the increasing end (31) pushes the bifurcation end to be embedded into a limiting groove (21) on the inner wall of the release connecting sleeve (2); -said diverging ends are capable of radial movement when said enlarged ends (31) are moved out of the diverging ends;
The bifurcation end is formed by arranging a plurality of elastic strips (11) at intervals in the circumferential direction; the edges of one end, close to the limiting pull rod (3), of the elastic strips (11) are fixedly provided with protruding blocks (12) respectively; the increasing end (31) moves to push the protruding block (12) to be clamped into the limiting groove (21) for locking; the enlarged end (31) moves out of the position of the lug (12), and the lug (12) can move radially;
the headstall assembly comprises a headstall housing (4); the middle part of the headstall shell (4) is spliced together through an intermediate joint (41); one end of the middle joint (41) is fixedly provided with a mounting pipe body (411); the release connecting sleeve (2) is adaptively clamped in the mounting pipe body (411);
A movable hole (412) is formed in the middle of the middle joint (41) in a penetrating manner, and the movable hole (412) is communicated with the release elastomer (1); the screw rod (5) of the electric control assembly penetrates through the movable hole (412); the motor is in driving connection with one end of the screw rod (5) through a screw nut; the other end of the screw rod (5) is embedded in the limit pull rod (3); the screw rod (5) drives the limit pull rod (3) to move back and forth;
the detachable component comprises a guide connection cylindrical block (6); one end of the guide connection cylindrical block (6) is spliced with the release elastomer (1); the other end of the guide connection cylindrical block (6) is connected with a cable through a connecting rod; a butt joint hole (61) is formed in the middle of the guide joint cylindrical block (6) in a penetrating manner; a screwed plug hole (42) corresponding to the butt joint hole (61) is formed in the headstall shell (4); the reducing end of the limiting pull rod (3) can penetrate into the butt joint hole (61);
An external force action detection tool is inserted into the butt joint hole (61) from the plug hole (42); the detection tool is matched with the reducing end of the limiting pull rod (3) to detect the state of releasing the elastic body (1); the detection tool detects the state change of the released elastic body (1), so that the circuit of the electric control assembly is ensured to be normal; after the detection tool detects that the released elastomer (1) is in a locking state finally, the elastomer can be put into a well for use;
the marks on the detection tool respectively represent a locking state, an abnormal state and a release state; the checking method of the electric control assembly circuit comprises the following steps:
The first step: inserting a detection tool into the docking hole (61); then observing the positions of the marks on the detection tool and the edges of the plug holes; when the release elastomer (1) is determined to be in a locking state, the detection tool is pulled out, and the motor is positively charged to change the state; the state change is: locking state-abnormal state-release state; after the motor stops rotating, inserting a detection tool into the butt joint hole (61), confirming that the release elastomer (1) is in a release state, and then pulling out the detection tool;
And a second step of: supplying power to the motor reversely to change the state; the state change is: releasing state-abnormal state-locking state; when the motor is stopped, a detection tool is inserted into the butt joint hole (61) to perform state detection, and the release elastomer (1) is confirmed to be in a locking state;
And a third step of: and taking out the detection tool to close the plug hole, thereby completing the detection of an electric control assembly circuit, ensuring that the release elastomer (1) is in a locking state, and logging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210687508.8A CN115095282B (en) | 2022-06-17 | 2022-06-17 | Motor-controlled releasable headstall well logging method and headstall structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210687508.8A CN115095282B (en) | 2022-06-17 | 2022-06-17 | Motor-controlled releasable headstall well logging method and headstall structure |
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| Publication Number | Publication Date |
|---|---|
| CN115095282A CN115095282A (en) | 2022-09-23 |
| CN115095282B true CN115095282B (en) | 2024-07-05 |
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| CN202210687508.8A Active CN115095282B (en) | 2022-06-17 | 2022-06-17 | Motor-controlled releasable headstall well logging method and headstall structure |
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| US4678038A (en) * | 1986-03-07 | 1987-07-07 | Rankin E Edward | Side entry sub well logging apparatus and method |
| JPH0913864A (en) * | 1995-06-29 | 1997-01-14 | Nippon Sharyo Seizo Kaisha Ltd | Connecting method for construction machine main shaft and excavation tool, and device therefor |
| WO2016007117A1 (en) * | 2014-07-07 | 2016-01-14 | Halliburton Energy Services, Inc. | Scale identifier |
| US10167694B2 (en) * | 2016-08-31 | 2019-01-01 | Weatherford Technology Holdings, Llc | Pressure control device, and installation and retrieval of components thereof |
| US11021923B2 (en) * | 2018-04-27 | 2021-06-01 | DynaEnergetics Europe GmbH | Detonation activated wireline release tool |
| CN212428667U (en) * | 2019-12-22 | 2021-01-29 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Novel cable control releaser |
| CN111119843B (en) * | 2019-12-25 | 2022-12-09 | 中国海洋石油集团有限公司 | Control nipple |
| CN212202036U (en) * | 2020-04-26 | 2020-12-22 | 西安石竹能源科技有限公司 | Full oil-filled tension bridle |
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