CN117345139B - Jet and uncoupling supporting anchor - Google Patents
Jet and uncoupling supporting anchor Download PDFInfo
- Publication number
- CN117345139B CN117345139B CN202311648806.7A CN202311648806A CN117345139B CN 117345139 B CN117345139 B CN 117345139B CN 202311648806 A CN202311648806 A CN 202311648806A CN 117345139 B CN117345139 B CN 117345139B
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- 238000004873 anchoring Methods 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 10
- 210000003781 tooth socket Anatomy 0.000 claims description 7
- 238000010008 shearing Methods 0.000 claims description 6
- 230000005465 channeling Effects 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 10
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/119—Details, e.g. for locating perforating place or direction
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Clamps And Clips (AREA)
Abstract
The invention discloses a shooting and de-coupling supporting anchor, relates to the technical field of oil field perforation, and solves the problems of low azimuth precision, low operation efficiency and high cost of an original azimuth perforation mode. According to the invention, a plurality of anchor teeth are radially pushed out by the opposite movement of the upper cone and the lower cone so as to be anchored at the designed perforation depth position, and the anchor teeth are used for supporting a perforating gun to implement directional perforation; after perforation is finished, the perforation gun pulls the anchor-releasing and pulling sleeve and the anchor-releasing piston, the lower cone and the clamping ring seat move downwards under the action of the reset spring, the lower end of the elastic clamping head for sitting and releasing the anchor is separated from the clamping groove of the clamping ring, and a plurality of anchor teeth are reset under the action of the limiting plate spring to realize anchor releasing; finally, the perforating gun and the perforating and disconnecting support anchor are lifted out of the wellhead together. The invention has the advantages of large anchoring force, accurate positioning depth and accurate positioning angle; the perforation is performed by the combination of shooting and de-shooting, so that one-time de-anchoring operation is reduced, and the operation quality and efficiency are improved.
Description
Technical Field
The invention relates to the technical field of oilfield perforation, in particular to a perforation and disconnection support anchor.
Background
Various azimuth perforation methods such as oil pipe conveying, cable conveying and the like of a vertical well and an inclined well exist at home and abroad, wherein the azimuth perforation method comprises azimuth perforation of the vertical well by using a gyroscope for direction finding, azimuth perforation of the inclined well by adopting an internal directional perforator and the like. When perforating in azimuth of a vertical well, a common mode is that an oil pipe is used for conveying a perforator, then the operation pipe column is rotated through a wellhead, and azimuth perforation is carried out after the azimuth of the perforation is measured by a carried gyroscope. The error of the azimuth measurement precision of the gyroscope is +/-5 degrees. Along with development of oil fields, perforation completion technology and process are continuously innovated and developed, and in recent years, newly developed precise perforation technology for the well-logging transformation of the old well is used for carrying out same-hole secondary perforation on the original perforation tunnels of the old well, so that higher requirements are provided for the azimuth accuracy of underground azimuth perforation, the original azimuth accuracy of the azimuth perforation cannot meet the process requirements, and the operation efficiency is low and the cost is high. Therefore, more accurate process technology and process equipment are required to meet the requirements of new technology popularization and application. Therefore, a downhole tool capable of accurately determining perforation depth and perforation tunnel orientation is developed, so that the new technology and technology become a technical means for oil field submerged production increase in the post-service oil recovery period.
Disclosure of Invention
The invention aims to solve the problems of low azimuth precision, low operation efficiency and high cost of the original azimuth perforation mode, and provides an shooting and uncoupling supporting anchor. The invention has the advantages of large anchoring force, accurate positioning depth and accurate positioning angle; the perforation is performed by the combination of shooting and de-shooting, so that one-time de-anchoring operation is reduced, and the operation quality and efficiency are improved.
The invention provides a shooting and releasing combined supporting anchor, which specifically comprises a seat key joint, a seat anchor pull sleeve, a plurality of releasing shear nails, a Jie Maola sleeve, a plurality of clamping blocks, a plurality of compression plate springs, a plurality of channeling prevention pins, an inner clamping tooth body, an outer clamping tooth seat, an upper cone, a seat releasing anchor elastic clamping head, a plurality of anchor teeth, a plurality of limiting plate springs, a lower cone, a releasing piston and a clamping ring structure, wherein the seat anchor pull sleeve is arranged in the upper end of the seat key joint through the plurality of releasing shear nails, and the lower end of the seat key joint is connected with the upper end of the outer clamping tooth seat; the lower end of the outer clamping tooth seat is connected with the upper end of the elastic clamping head of the sitting and releasing anchor; the upper outer half part of the outer clamping tooth seat is sleeved with an inner clamping tooth body through a plurality of channeling-preventing pins, and the lower outer half part is sleeved with an upper cone; the lower end of the elastic clamping head of the sitting and releasing anchor is sleeved with a lower cone and a clamping ring structure, and the lower end of the elastic clamping head of the sitting and releasing anchor is clamped with the clamping ring structure; the upper ends of the limiting plate springs are movably connected with the inner clamping tooth bodies, and the lower ends of the limiting plate springs are movably connected with the clamping ring structures; a plurality of anchor teeth are arranged between the upper cone and the lower cone; the anchor teeth are fixed outside the elastic clamping head for anchoring and releasing through limiting plate springs in a limiting manner; a one-way ratchet structure is arranged between the inner clamping tooth body and the outer clamping tooth seat;
the seat key joint is internally provided with an anchor-releasing sleeve, and the lower end of the anchor-releasing sleeve is connected with the upper end of the anchor-releasing piston; the lower end of the anchor release piston penetrates through the outer clamping tooth seat and the elastic clamping head of the anchor release piston, and supports the elastic clamping head at the lower end of the elastic clamping head of the anchor release piston; the clamping blocks are rotatably arranged on the anchor-releasing sleeve; the lower end of the compression plate spring is fixed on the anchor-releasing sleeve; the upper end of the compression plate spring supports the movable end of the clamping block, so that the clamping block swings inwards of the Jie Maola sleeve; the lower end of the Jie Maola sleeve is leaned against the shoulder structure in the outer clamping tooth seat;
the unidirectional ratchet structure comprises a plurality of tooth sockets, a plurality of outer clamping teeth and a plurality of springs, wherein the tooth sockets, the outer clamping teeth and the springs are arranged on the inner wall of the inner clamping tooth body, and the outer clamping teeth are rotatably arranged on the outer wall of the outer clamping tooth seat; one end of the spring is connected with the movable end of the outer clamping tooth, and the other end of the spring is connected with the outer clamping tooth seat; the outer clamping teeth and the tooth sockets are matched and limited.
Further, the upper end of the seat key joint is provided with a positioning key, and the positioning key is arranged below the seat anchor pulling sleeve.
Furthermore, a reset spring is sleeved outside the elastic chuck of the sitting and releasing anchor, the upper end of the reset spring is connected with the upper cone, and the lower end of the reset spring is connected with the lower cone.
Still further, the snap ring structure includes snap ring, snap ring seat and snap ring fixed ring, and the snap ring passes through the snap ring fixed ring to be fixed in the snap ring seat inside.
Furthermore, a clamping groove is formed in the inner side of the clamping ring and is matched and clamped with the lower end of the elastic clamping head of the sitting and releasing anchor.
Still further, be provided with the leaf spring groove on the anchor tooth, spacing leaf spring carries out spacingly to the anchor tooth through the leaf spring groove.
Furthermore, the outer ring at the lower end of the upper cone and the outer ring at the upper end of the lower cone are provided with chamfer structures, the upper ends of a plurality of anchor teeth lean against the chamfer of the outer ring at the lower end of the upper cone, and the lower ends lean against the chamfer of the outer ring at the upper end of the lower cone.
Still further, the number of the releasing shear pins is 6, and the total shearing force resistance is 12 tons.
Further, the number of the channeling-preventing pins is 4, and the total shearing force resistance is 3 tons.
The ejection and disassembly support anchor has the beneficial effects that:
(1) The shooting and de-coupling supporting anchor solves the problems of low azimuth precision, low operation efficiency and high cost of the original azimuth perforation mode, and breaks through the technical bottlenecks of accurate depth and azimuth positioning of the cable azimuth perforation technology; before the cable is perforated in a fixed position, the shooting and uncoupling supporting anchors are radially pushed out by the opposite movement of the upper cone and the lower cone so as to be anchored at the designed perforation depth position, and the shooting and uncoupling supporting anchors are used for supporting the perforation gun to stop at the designed perforation depth position and determining the position of a perforation tunnel. And then the azimuth of the sleeve supporting anchor positioning key is measured by using a gyroscope, and then the perforator with the adjusted gun tail azimuth is automatically aligned and seated on the supporting anchor positioning key by shooting and uncoupling, so that accurate azimuth perforation can be implemented, the jet flow of a new perforating bullet can be ensured to be accurately aligned with the original perforation tunnel, and the design requirement of the same-hole secondary perforation is met. After the operation is finished, lifting the cable, pulling the anchor-releasing and pulling sleeve by the gun tail guide body of the perforating gun, lifting the anchor-releasing piston, enabling the lower cone and the clamping ring seat to move downwards under the action of the reset spring, enabling the lower end of the elastic clamping head of the anchor-releasing seat to be separated from the clamping groove of the clamping ring, and resetting a plurality of anchor teeth under the action of the limiting plate spring to realize anchor-releasing; finally, the perforating gun and the perforating and unbinding support anchors are put out of the wellhead together, and continuous operation of perforation and unbinding is completed by one operation, so that one-time independent unbinding operation is reduced, the operation efficiency is improved, and the operation cost is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
In the drawings:
FIG. 1 is a schematic view of a shooting and uncoupling support anchor in accordance with the present invention;
FIG. 2 is an enlarged view of a portion of an injection and decompression support anchor according to the present invention at A in FIG. 1;
FIG. 3 is an enlarged view of a portion of an injection and decompression support anchor according to the present invention at B in FIG. 1;
FIG. 4 is an enlarged view of a portion of an injection and decompression support anchor according to the present invention at C in FIG. 1;
FIG. 5 is a schematic view of the structure of the ejector-de-anchor piston of the present invention after lifting the anchor;
wherein: the hydraulic anchor comprises an 11-seat key joint, a 12-seat anchor pull sleeve, a 13-releasing shear pin, a 14-positioning key, a 21-Jie Maola sleeve, a 22-clamping block, a 23-compression plate spring, a 24-channeling-preventing pin, a 25-inner clamping tooth body, a 26-outer clamping tooth, a 27-outer clamping tooth seat, a 31-upper cone, a 32-seat anchor elastic clamping head, a 33-anchor tooth, a 34-limiting plate spring, a 35-lower cone, a 36-anchor releasing piston, a 37-clamping ring, a 38-clamping ring seat, a 39-clamping ring fixing ring and a 40-return spring.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings:
the first embodiment is as follows: the present embodiment is specifically described with reference to fig. 1 to 5. The shooting and releasing combined supporting anchor device in the embodiment comprises a seat key joint 11, a seat anchor pull sleeve 12, a plurality of releasing shear nails 13, a releasing anchor pull sleeve 21, a plurality of clamping blocks 22, a plurality of compression plate springs 23, a plurality of channeling prevention pins 24, an inner clamping tooth body 25, an outer clamping tooth seat 27, an upper cone 31, a seat anchor releasing elastic clamping head 32, a plurality of anchor teeth 33, a plurality of limiting plate springs 34, a lower cone 35, an anchor releasing piston 36 and a clamping ring structure, wherein the seat anchor pull sleeve 12 is arranged in the upper end of the seat key joint 11 through the plurality of releasing shear nails 13, and the lower end of the seat anchor pull sleeve is in threaded connection with the upper end of the outer clamping tooth seat 27; the lower end of the outer clamping tooth seat 27 is in threaded connection with the upper end of the elastic clamping head 32 of the sitting and releasing anchor; the upper outer half part of the outer clamping seat 27 is sleeved with an inner clamping body 25 through a plurality of channeling-preventing pins 24, and the lower outer half part is sleeved with an upper cone 31; the lower end of the elastic chuck 32 of the anchor is sleeved with a lower cone 35 and a snap ring structure, and the snap ring structure is arranged below the lower cone 35; the lower end of the sitting and releasing anchor elastic clamping head 32 is clamped with the clamping ring structure; the upper ends of the limiting plate springs 34 are movably connected with the inner clamping tooth bodies 25, and the lower ends of the limiting plate springs are movably connected with the clamping ring structures; a plurality of anchor teeth 33 are arranged between the upper cone 31 and the lower cone 35; the anchor teeth 33 are fixed outside the elastic clamping head 32 for anchoring and releasing by limiting plate springs 34; a one-way ratchet structure is arranged between the inner clamping tooth body 25 and the outer clamping tooth seat 27;
the seat key joint 11 is internally provided with a de-anchor pull sleeve 21, and the lower end of the de-anchor pull sleeve 21 is connected with the upper end of a de-anchor piston 36; the lower end of the anchor release piston 36 passes through the outer clamping tooth seat 27 and the inner part of the anchor release elastic clamping head 32 and supports the elastic clamping head at the lower end of the anchor release elastic clamping head 32; the clamping blocks 22 are rotatably arranged on the anchor-releasing sleeve 21 through pin shafts; the lower end of the compression plate spring 23 is fixed on the anchor-releasing sleeve 21; the upper end of the compression plate spring 23 supports the movable end of the clamping block 22, so that the clamping block 22 swings into the Jie Maola sleeve 21; the lower end of the Jie Maola sleeve 21 rests on the shoulder structure inside the outer bayonet socket 27.
The upper end of the seat key joint 11 is provided with a positioning key 14, and the positioning key 14 is arranged below the seat anchor pull sleeve 12.
The unidirectional ratchet structure comprises a plurality of tooth sockets, a plurality of outer clamping teeth 26 and a plurality of springs which are arranged on the inner wall of the inner clamping tooth body 25, and the outer clamping teeth 26 are rotatably arranged on the outer wall of the outer clamping tooth seat 27 through pin shafts; one end of the spring is connected with the movable end of the outer clamping tooth 26, and the other end of the spring is connected with the outer clamping tooth seat 27; the outer bayonet 26 cooperates with the socket to limit the relative position between the inner bayonet body 25 and the outer bayonet seat 27.
The elastic chuck 32 is sleeved with a reset spring 40, the upper end of the reset spring 40 is connected with the upper cone 31, and the lower end is connected with the lower cone 35.
The snap ring structure comprises a snap ring 37, a snap ring seat 38 and a snap ring fixing ring 39, wherein a step structure is arranged inside the snap ring seat 38, the snap ring 37 is fixed inside the snap ring seat 38 through the snap ring fixing ring 39, and the snap ring fixing ring 39 is connected with the snap ring seat 38 through threads.
A clamping groove is formed in the inner side of the clamping ring 37 and is matched and clamped with a plurality of elastic chucks arranged at the lower ends of the sitting and releasing anchor elastic chucks 32; the elastic clamping head is provided with a protruding structure, and the protruding structure is inserted into the clamping groove.
The anchor teeth 33 are provided with plate spring grooves, and the limiting plate springs 34 limit the anchor teeth 33 through the plate spring grooves.
The upper cone 31 lower end outer ring and the lower cone 35 upper end outer ring are provided with chamfer structures, the upper ends of the plurality of anchor teeth 33 lean against the chamfer of the upper cone 31 lower end outer ring, the lower ends lean against the chamfer of the lower cone 35 upper end outer ring, and the contact surface is an inclined surface.
The number of the releasing shear pins 13 is 6, and the total shearing resistance is 12 tons. The number of the channeling-preventing pins 24 is 4, and the total shearing resistance is 3 tons.
The concrete working process of the jet-release combined supporting anchor is explained as follows:
before perforation, a seat anchor pulling sleeve 12 at the upper end of a shooting and uncoupling support anchor is connected to external threads of a pull rod at the lower end of a general power cylinder, and a cable belt is used for carrying the shooting and uncoupling support anchor together to a well depth position of a pre-perforation designed for operation construction.
Energizing the cable on the ground operation platform, enabling the underground universal power cylinder jacket to prop against the upper end face of the inner clamping tooth body 25, enabling the power cylinder pull rod to pull the seat anchor pull sleeve 12 upwards, enabling the seat anchor pull sleeve 12 to drive the seat key joint 11 along with the fact that the seat anchor pull sleeve 12 is pulled upwards by the universal power cylinder, enabling the seat key joint 11 to pull the outer clamping tooth seat 27, and enabling the channeling preventing pin 24 to be broken; the outer clamping tooth seat 27 moves upwards along with the anchor pull sleeve 12 under the drive of the seat key joint 11, and the outer clamping tooth seat 27 and the inner clamping tooth body 25 relatively displace as the inner clamping tooth body 25 is covered by the outer sleeve of the general power cylinder; at this time, the lower end of the elastic clamping head 32 of the seat-releasing anchor is clamped with the clamping ring 37, so that the clamping ring structure is driven to move upwards together, and the lower cone 35 is pushed upwards by the elastic clamping head 32 of the seat-releasing anchor and the clamping ring seat 38, so that the plurality of anchor teeth 33 are anchored to the inner wall of the shaft along the radial direction. When the upward pulling force of the power cylinder pull rod to the anchor pull sleeve 12 is more than 12 tons, six releasing shear pins 13 are sheared off; the outer bayonet 26 falls into the corresponding socket of the inner bayonet 25 to lock the relative positions of the upper cone 31 and the lower cone 35, and the injection and release support anchors meet the rated working pressure and are anchored on the inner wall of the sleeve.
After the shooting and releasing combined supporting anchor setting is completed, the setting anchor pulling sleeve 12 shears the releasing shear pin 13 to realize releasing, and then the lifting cable lifts the universal power cylinder out of the wellhead to retract.
The cable belt gyroscope is put into the well again, the azimuth angle of the shooting and uncoupling supporting anchor positioning key 14 is detected, and the gyroscope is put out of the well after the data is obtained.
According to the measured azimuth angle of the positioning key 14 of the jet and release supporting anchor, adjusting the phase angle of a guide body key groove on the gun tail at the lower end of the perforator, fixing, continuously adjusting the compensation height between the upper end surface of the seat key joint 11 and the first transmitting hole position, connecting the perforator at the lower end of a cable cock, and conveying the perforator underground by using a cable so that the perforator is seated on the seat key joint 11 of the jet and release supporting anchor; under the action of the gun tail guide body at the lower end of the perforating gun, the perforating position of the perforating gun is rotated to a preset position, and each perforating bullet is naturally and accurately aligned with the underground depth and the position to be perforated. The unlocking rod head at the lower end of the gun tail guide body is inserted into the Jie Maola sleeve 21 and extends through the clamping blocks 22, and the clamping blocks 22 clamp the unlocking rod head at the lower end of the gun tail guide body of the perforator under the action of the compression plate spring 23.
The surface operation fires the perforating gun through the cable.
After perforation is completed, the perforating gun is lifted up by the recovery cable, the anchor rod is pulled to release the anchor pulling sleeve 21 by the lower end release rod of the gun tail guide body of the perforating gun, then the anchor releasing piston 36 is lifted up, the lower end of the anchor releasing piston 36 is retracted into the inner cavity of the anchor releasing elastic chuck 32, the lower end of the anchor releasing elastic chuck 32 loses the rigid support of the anchor releasing piston 36, as shown in fig. 5, the lower cone 35 is pushed downwards under the action of the return spring 40, the lower cone 35 pushes the snap ring seat 38 downwards, the elastic chuck at the lower end of the anchor releasing elastic chuck 32 is pulled out of the clamping groove of the snap ring, and the anchor teeth 33 are retracted under the action of the limiting plate spring 34 to realize anchor releasing. The shooting and uncoupling supporting anchors after the anchor release are lifted out of the wellhead along with the perforator by the cable.
By summarizing the implementation cases, the shooting and decoupling support anchor solves the problems of low azimuth precision, low operation efficiency and high cost of the original azimuth perforation mode, and breaks through the technical bottlenecks of accurate depth and azimuth positioning of the cable azimuth perforation technology; before the cable is perforated in a fixed position, the shooting and uncoupling supporting anchors are radially pushed out by the opposite movement of the upper cone 31 and the lower cone 35 to anchor at the designed perforation depth position, so as to support the perforation gun to stop at the designed perforation depth position and determine the position of a perforation tunnel. And then the azimuth of the sleeve supporting anchor positioning key is measured by using a gyroscope, and then the perforator with the adjusted gun tail azimuth is automatically aligned and seated on the supporting anchor positioning key by shooting and uncoupling, so that accurate azimuth perforation can be implemented, the jet flow of a new perforating bullet can be ensured to be accurately aligned with the original perforation tunnel, and the design requirement of the same-hole secondary perforation is met. After the operation is finished, the cable is lifted up, the gun tail guide body of the perforating gun pulls the anchor-releasing pull sleeve 21 to lift the anchor-releasing piston 36 up, the lower cone 35 and the clamping ring seat 38 move downwards under the action of the reset spring 40, the lower end of the elastic clamping head 32 for anchor-releasing is separated from the clamping groove of the clamping ring 37, and the anchor teeth 33 are reset under the action of the limiting plate spring 34 to realize anchor-releasing; finally, the perforating gun simultaneously extracts the perforation and the anchor release as the supporting anchors and completes continuous operation of perforation and anchor release by one operation, thereby reducing one independent anchor release operation, improving the operation efficiency and reducing the operation cost.
The above specific embodiments are used for further detailed description of the objects, technical solutions and advantageous effects of the present invention. It should be understood that the foregoing description is only a specific example of the present invention, and is not intended to limit the invention, but rather is a reasonable combination of features described in the foregoing embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. An ejection and disassembly support anchor, which is characterized in that: the novel anchor device comprises a seat key joint (11), a seat anchor pull sleeve (12), a plurality of releasing shear nails (13), jie Maola sleeves (21), a plurality of clamping blocks (22), a plurality of compression plate springs (23), a plurality of channeling prevention pins (24), an inner clamping tooth body (25), an outer clamping tooth seat (27), an upper cone (31), a seat anchor release elastic clamping head (32), a plurality of anchor teeth (33), a plurality of limiting plate springs (34), a lower cone (35), an anchor release piston (36) and a clamping ring structure, wherein the seat anchor pull sleeve (12) is arranged in the upper end of the seat key joint (11) through the plurality of releasing shear nails (13), and the lower end of the seat key joint is connected with the upper end of the outer clamping tooth seat (27); the lower end of the outer clamping seat (27) is connected with the upper end of the elastic clamping head (32) for anchoring and releasing; an inner clamping tooth body (25) is sleeved on the outer upper half part of the outer clamping tooth seat (27) through a plurality of channeling-preventing pins (24), and an upper cone (31) is sleeved on the outer lower half part of the outer clamping tooth seat; the lower end of the sitting and releasing anchor elastic clamping head (32) is sleeved with a lower cone (35) and a clamping ring structure, and the lower end of the sitting and releasing anchor elastic clamping head (32) is clamped with the clamping ring structure; the upper ends of the limiting plate springs (34) are movably connected with the inner clamping tooth bodies (25), and the lower ends of the limiting plate springs are movably connected with the clamping ring structures; a plurality of anchor teeth (33) are arranged between the upper cone (31) and the lower cone (35); the anchor teeth (33) are fixed outside the elastic clamping head (32) for anchoring and releasing by limiting plate springs (34); a one-way ratchet structure is arranged between the inner clamping tooth body (25) and the outer clamping tooth seat (27);
the inside of the seat key joint (11) is provided with an anchor-releasing sleeve (21), and the lower end of the anchor-releasing sleeve (21) is connected with the upper end of an anchor-releasing piston (36); the lower end of the anchor release piston (36) passes through the inner parts of the outer clamping tooth seat (27) and the elastic clamping head (32) for anchor release and supports the elastic clamping head at the lower end of the elastic clamping head (32) for anchor release; a plurality of clamping blocks (22) are rotatably arranged on the anchor-releasing sleeve (21); the lower end of the compression plate spring (23) is fixed on the anchor-releasing sleeve (21); the upper end of the compression plate spring (23) supports the movable end of the clamping block (22) to enable the clamping block (22) to swing into the Jie Maola sleeve (21); the lower end of the Jie Maola sleeve (21) is leaned against a shoulder structure in the outer clamping seat (27);
the unidirectional ratchet structure comprises a plurality of tooth sockets, a plurality of outer clamping teeth (26) and a plurality of springs, wherein the tooth sockets, the outer clamping teeth (26) and the springs are arranged on the inner wall of the inner clamping tooth body (25), and the outer clamping teeth (26) are rotatably arranged on the outer wall of the outer clamping tooth seat (27); one end of the spring is connected with the movable end of the outer clamping tooth (26), and the other end of the spring is connected with the outer clamping tooth seat (27); the outer clamping teeth (26) and the tooth sockets are matched and limited;
the upper end of the seat key joint (11) is provided with a positioning key (14), and the positioning key (14) is arranged below the seat anchor sleeve (12).
2. The shoot-and-release support anchor of claim 1, wherein: the outside cover of sitting and releasing anchor elastic chuck (32) is equipped with reset spring (40), and reset spring (40) upper end and last cone (31) are connected, and the lower extreme is connected with lower cone (35).
3. The shoot-and-release support anchor of claim 1, wherein: the snap ring structure comprises a snap ring (37), a snap ring seat (38) and a snap ring fixing ring (39), wherein the snap ring (37) is fixed inside the snap ring seat (38) through the snap ring fixing ring (39).
4. A jet and uncoupling supporting anchor as claimed in claim 3, wherein: the inner side of the clamping ring (37) is provided with a clamping groove which is matched and clamped with the lower end of the elastic clamping head (32) of the sitting and releasing anchor.
5. The shoot-and-release support anchor of claim 1, wherein: the anchor teeth (33) are provided with plate spring grooves, and the limiting plate springs (34) limit the anchor teeth (33) through the plate spring grooves.
6. The shoot-and-release support anchor of claim 1, wherein: the upper cone (31) lower end outer ring and the lower cone (35) upper end outer ring are provided with chamfer structures, the upper ends of a plurality of anchor teeth (33) lean against the chamfer of the upper cone (31) lower end outer ring, and the lower ends lean against the chamfer of the lower cone (35) upper end outer ring.
7. The shoot-and-release support anchor of claim 1, wherein: the number of the releasing shear pins (13) is 6, and the total shearing resistance is 12 tons.
8. The shoot-and-release support anchor of claim 1, wherein: the number of the anti-channeling pins (24) is 4, and the total shearing resistance is 3 tons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311648806.7A CN117345139B (en) | 2023-12-05 | 2023-12-05 | Jet and uncoupling supporting anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311648806.7A CN117345139B (en) | 2023-12-05 | 2023-12-05 | Jet and uncoupling supporting anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117345139A CN117345139A (en) | 2024-01-05 |
| CN117345139B true CN117345139B (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311648806.7A Active CN117345139B (en) | 2023-12-05 | 2023-12-05 | Jet and uncoupling supporting anchor |
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| CN (1) | CN117345139B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4693308A (en) * | 1985-12-19 | 1987-09-15 | Halliburton Company | Tubing conveyed perforating safety anchor |
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