Internal-pressurization tapping ball-throwing hand-releasing tool

Abstract

The utility model discloses an internal pressurization trepanning ball-throwing hand-releasing tool, which comprises a female buckle, a hand-releasing sleeve, a locking trepanning sleeve and a male buckle which are connected in sequence, a hand-releasing ball seat is arranged in the hand-releasing sleeve, a trepanning sliding sleeve is arranged in the locking trepanning sleeve, and a trepanning shearing sleeve is arranged between the locking trepanning sleeve and the trepanning sliding sleeve. During operation, the first-stage pin can be sheared through pressurization in the tubular column, the circulation hole is opened, the interior of the tubular column is communicated with the annulus, then the second-stage pin is sheared through ball throwing pressurization, the hand-releasing ball seat can be sheared, the locking claw can be unlocked, the tool can be released from the hand and pulled out of the upper tubular column, and extremely high production and application value is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oil and gas testing and well completion technical field, concretely relates to a kind of inner pressurization opening ball throwing hand release tool. BACKGROUND

[0002] Open hole well separate layer testing needs to be lowered into open hole packer and set in specific open hole section position, to divide open hole section into 2 layers or multiple layers to test or test after blocking the bottom water of buried hill lower part.In actual operation, to guarantee the setting effect of open hole packer and test safety, it is often necessary to separately group a trip of pipe column to set open hole packer to realize open hole separate layer, and its pipe column combination is generally drill tool+ball throwing hand release tool+pipe column opening tool+open hole packer+blind plug+guide shoe, after pipe column is in place, open hole packer is set first by staged pressurization, and then open hole packer needs to be handled, pipe column opening tool needs to be operated first to realize the communication between inside and outside of pipe column, and then ball pressurization is realized to release pipe column.The lower part of traditional ball throwing hand release tool does not have circulation passage, and after ball is thrown, the liquid in the lower part of ball seat cannot be compressed by pressurization in pipe column, so that pin cannot be sheared, and the requirement of open hole packer setting cannot be met, and opening tool needs to be additionally matched to operate, so that two tools need to be operated respectively, which is time-consuming and laborious, and two tools also need to be mobilized respectively before operation, which is very inconvenient. CONTENT OF UTILITY MODEL

[0003] The utility model is proposed to solve the problems in the prior art, and aims to provide a kind of inner pressurization opening ball throwing hand release tool.

[0004] The utility model is realized by the following technical schemes:

[0005] A kind of inner pressurization opening ball throwing hand release tool, including the connection of female buckle, hand release sleeve, locking opening sleeve and male buckle in sequence, hand release sleeve is provided with hand release ball seat inside, locking opening sleeve is provided with opening sliding sleeve inside, and opening shearing sleeve is arranged between locking opening sleeve and opening sliding sleeve.

[0006] In the above technical scheme, the female buckle is the stepped sleeve type structure of big down small, and the outer wall of small diameter section is formed with external thread;The small diameter section of female buckle is inserted into hand release sleeve, and is connected with the inner wall of hand release sleeve by thread;At least one annular sealing groove is formed in the outer wall of small diameter section of female buckle, and sealing ring is arranged in sealing groove.

[0007] In the above technical scheme, the hand release sleeve is the stepped sleeve type structure of big down small, and the small diameter section is inserted into locking opening sleeve, and sealing ring is arranged between the outer wall of small diameter section of hand release sleeve and the inner wall of locking opening sleeve;Multiple full-through pin holes are formed in the middle of large diameter section of hand release sleeve and are uniformly distributed along circumference, full-through pin hole is opened along radial direction, and two-stage pin is arranged in full-through pin hole.

[0008] In the above technical solution, the small-diameter section bottom surface of the glove removing sleeve is uniformly distributed with a plurality of locking claws along the circumference, and the locking claws are long strip-shaped structures with a specific-shaped locking hook formed at the bottom end.

[0009] In the above technical solution, the glove removing ball seat is a sleeve structure, the upper outer wall of which forms an upper convex ring, and the lower outer wall forms a lower convex ring; the upper convex ring is uniformly distributed with a plurality of semi-penetrating pin holes along the circumference, and the semi-penetrating pin holes are matched with the secondary pins to realize the fixed connection of the glove removing sleeve and the glove removing ball seat; the outer wall of the glove removing ball seat below the upper convex ring is uniformly distributed with a plurality of full-penetrating communication holes along the circumference.

[0010] In the above technical solution, the upper inner wall of the glove removing ball seat forms a ring groove gradually reduced in diameter from top to bottom, the minimum inner diameter of the ring groove is not greater than the diameter of the steel ball, and the maximum inner diameter of the ring groove is not less than the diameter of the steel ball.

[0011] In the above technical solution, the upper end inner wall of the locking opening sleeve forms a ring groove matched with the small-diameter section of the glove removing sleeve to realize the fixation of the glove removing sleeve, and a sealing ring is arranged between the outer wall of the small-diameter section of the glove removing sleeve and the inner wall of the locking opening sleeve; the middle inner wall of the locking opening sleeve forms a limiting groove matched with the shape of the locking hook; the lower end of the locking opening sleeve forms a plurality of full-penetrating circulation holes uniformly distributed along the circumference; the middle inner wall of the locking opening sleeve forms an inner convex ring; the lower end inner wall of the locking opening sleeve forms a first ring groove and a second ring groove, both of which are below the inner convex ring, the opening shearing sleeve is arranged in the first ring groove, and the second ring groove is connected with the male thread; the opening sliding sleeve is below the inner convex ring, and a gap is arranged between the top surface of the opening sliding sleeve and the bottom surface of the inner convex ring.

[0012] In the above technical solution, the opening sliding sleeve and the opening shearing sleeve are fixedly connected through a plurality of primary pins uniformly distributed along the circumference; two sealing rings are arranged between the opening sliding sleeve and the locking opening sleeve, and the two sealing rings are respectively arranged on the upper and lower sides of the full-penetrating circulation hole; the lower outer wall of the opening sliding sleeve forms a ring groove.

[0013] In the above technical solution, the outer wall of the male buckle forms a plurality of full-penetrating radial pressure transmission holes uniformly distributed along the circumference, the full-penetrating radial pressure transmission holes are obliquely downwardly formed, and the inner side end of the full-penetrating radial pressure transmission hole is communicated with the ring groove.

[0014] In the above technical solution, a sealing ring is arranged between the inner wall of the male buckle and the outer wall of the opening sliding sleeve, and the sealing ring is arranged below the full-penetrating radial pressure transmission hole; the lower inner wall of the male buckle forms an inner convex ring.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model provides a kind of inner pressurization opening hole ball throwing hand release tool, when operating, it can open circulation hole by pipe column inner pressurization shearing first pin, realize pipe column interior and annulus intercommunication, then throw ball pressurization shearing second pin, can shear hand release ball seat, locking claw is unlocked, realize tool hand release, lift upper pipe column, with extremely high production and application value. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the structure schematic diagram of the utility model;

[0018] Fig. 2 It is the sectional view of utility model initial state;

[0019] Fig. 3 It is the sectional view of utility model transition state;

[0020] Fig. 4 It is the sectional view of utility model final state.

[0021] Among them:

[0022] 100, female buckle;

[0023] 200, hand release sleeve;201, locking claw;202, locking hook;203, second pin;204, full-through pin hole;

[0024] 300, hand release ball seat;301, full-through intercommunication hole;302, upper convex ring;303, lower convex ring;304, half-through pin hole;

[0025] 400, locking opening hole sleeve;401, full-through circulation hole;402, inner convex ring;

[0026] 500, opening hole sliding sleeve;501, first pin;502, annular groove;

[0027] 600, opening hole shearing sleeve;

[0028] 700, male buckle;701, full-through radial pressure transmission hole;

[0029] 800, steel ball.

[0030] For ordinary skilled person in the art, other relevant drawings can be obtained according to above drawing without paying creative labor. DETAILED DESCRIPTION

[0031] In order to make personnel in the art better understand the technical scheme of the utility model, the technical scheme of the utility model is further explained below by combining with the drawings of the specification and through specific embodiments.

[0032] As Figs. 1-4As shown, an inner pressurized opening throwing tool includes a female buckle 100, a throwing sleeve 200, a locking opening sleeve 400 and a male buckle 700 connected in sequence, the throwing sleeve 200 is internally provided with a throwing ball seat 300, the locking opening sleeve 400 is internally provided with an opening sliding sleeve 500, and an opening shearing sleeve 600 is arranged between the locking opening sleeve 400 and the opening sliding sleeve 500; the female buckle 100 is threadedly connected with the throwing sleeve 200; the locking opening sleeve 400 is threadedly connected with the male buckle 700; the throwing sleeve 200 and the locking opening sleeve 400 are inserted and connected.

[0033] The female buckle 100 is a stepped sleeve structure with a large upper diameter and a small lower diameter, and an outer thread is formed on the outer wall of the small diameter section of the female buckle 100; the small diameter section of the female buckle 100 is inserted into the throwing sleeve 200 and threadedly connected with the inner wall of the throwing sleeve 200; at least one annular sealing groove is formed on the outer wall of the small diameter section of the female buckle 100, and a sealing ring is arranged in the sealing groove;

[0034] The throwing sleeve 200 is a sleeve structure, the outer wall of the lower end of the throwing sleeve 200 is formed with circumferentially distributed insertion grooves, the insertion grooves are inserted with insertion strips arranged at the top end of the locking opening sleeve 400 to realize the connection between the throwing sleeve 200 and the locking opening sleeve 400; a sealing ring is arranged between the outer wall of the throwing sleeve 200 and the inner wall of the locking opening sleeve 400; a plurality of locking claws 201 are circumferentially distributed on the bottom surface of the throwing sleeve 200, the locking claws 201 are long strip structures, the bottom ends of which are formed with locking hooks 202 of a specific shape; a plurality of full-through pin holes 204 are circumferentially distributed on the middle part of the throwing sleeve 200, the full-through pin holes 204 are radially arranged, and secondary pins 203 are arranged in the full-through pin holes 204 to realize the fixed connection between the throwing sleeve 200 and the throwing ball seat 300; a three-section stepped through hole is formed in the middle of the throwing sleeve 200, the stepped through hole is composed of a large hole, a transition hole and a small hole formed in sequence from top to bottom, the hole diameter of the transition hole gradually decreases from top to bottom, the inner wall of the upper end of the large hole is formed with an inner thread, and the inner thread of the inner wall of the large hole is threadedly matched with the outer thread of the small diameter section of the female buckle 100;

[0035] The hand-off ball seat 300 is a sleeve structure, the upper outer wall of which forms an upper convex ring 302, and the lower outer wall forms a lower convex ring 303, both of which are smoothly transitioned with the main body outer wall of the hand-off ball seat 300; the upper convex ring 302 forms a plurality of semi-penetrating pin holes 304 which are uniformly distributed along the circumference, and the semi-penetrating pin holes 304 cooperate with the secondary pin 203 to realize the fixed connection of the hand-off sleeve 200 and the hand-off ball seat 300; the outer circumferential wall above and below the semi-penetrating pin hole 304 forms a sealing groove, and a sealing ring is arranged in the sealing groove; the lower convex ring 303 is limited by abutting against the locking claw 201 of the hand-off sleeve 200; the upper inner wall of the hand-off ball seat 300 forms a ring groove which gradually reduces in diameter from top to bottom, the minimum inner diameter of the ring groove is not greater than the diameter of the steel ball 800, and the maximum inner diameter of the ring groove is not less than the diameter of the steel ball 800; the ring groove cooperates with the steel ball 800 to pressurize and axially move to shear the secondary pin 203; the outer wall of the hand-off ball seat 300 below the upper convex ring 302 is uniformly distributed with a plurality of full-penetrating communication holes 301 along the circumference, which can balance the pressure;

[0036] The top surface of the locking opening sleeve 400 is uniformly distributed with a plurality of insertion strips along the circumference, and the insertion strips are one-to-one corresponding to the insertion grooves of the hand-off sleeve 200; the middle inner wall of the locking opening sleeve 400 forms a limiting groove matched with the shape of the locking hook 202, and the limiting groove cooperates with the locking hook 202 to realize locking; the lower end of the locking opening sleeve 400 forms a plurality of full-penetrating circulation holes 401 which are uniformly distributed along the circumference, and the full-penetrating circulation holes 401 can realize the communication between the inside and outside of the pipe column after the opening sliding sleeve 500 is displaced; the middle inner wall of the locking opening sleeve 400 forms an inner convex ring 402, the inner wall of the locking opening sleeve 400 above the inner convex ring 402 forms a chamfer, and the inner convex ring 402 cooperates with the moving position of the hand-off ball seat 300 after the pin is sheared; the lower end inner wall of the locking opening sleeve 400 forms a first ring groove and a second ring groove, both of which are below the inner convex ring 402, the opening shearing sleeve 600 is arranged in the first ring groove, and the second ring groove is threadedly connected with the male buckle 700; the opening sliding sleeve 500 is below the inner convex ring 402, and a small gap is arranged between the top surface of the opening sliding sleeve 500 and the bottom surface of the inner convex ring 402, so as to realize the pressure transmission during internal pressurization;

[0037] The opening sliding sleeve 500 and the opening shearing sleeve 600 are fixedly connected through a plurality of primary pins 501 which are uniformly distributed along the circumference; two sealing rings are arranged between the opening sliding sleeve 500 and the locking opening sleeve 400, and the two sealing rings are respectively arranged on the upper and lower sides of the full-penetrating circulation hole 401, so as to realize the pressure sealing before the circulation hole is opened; the lower outer wall of the opening sliding sleeve 500 forms a ring groove 502;

[0038] The outer wall of the opening shearing sleeve 600 forms a plurality of full-penetrating pin holes which are uniformly distributed along the circumference, and the full-penetrating pin holes are provided with the primary pin 501, so as to realize the fixation with the opening sliding sleeve 500;

[0039] The outer wall of the male buckle 700 forms a plurality of full-through radial pressure transmission holes 701 distributed along the circumference, the full-through radial pressure transmission holes 701 are obliquely downwardly formed, and the inner side end of the full-through radial pressure transmission hole 701 is communicated with the annular groove 502; the full-through radial pressure transmission hole 701 realizes transmission of annular space pressure; the full-through radial pressure transmission hole 701 and the annular groove 502 are communicated to realize that the upper and lower end faces are subjected to different forces when the opening sliding sleeve 500 is pressurized, and then the first level pin 501 is sheared to expose the full-through circulation hole 401 of the locking opening sleeve 400; a sealing ring is arranged between the inner wall of the male buckle 700 and the outer wall of the opening sliding sleeve 500, and the sealing ring is arranged below the full-through radial pressure transmission hole 701; the lower inner wall of the male buckle 700 forms an inner convex ring, and when the opening sliding sleeve 500 shears the first level pin 501, the lower end of the opening sliding sleeve 500 is limited by the inner convex ring.

[0040] The steel ball 800 is put into the inside of the opening ball dropping and releasing tool by the top of the female buckle 100, and after being seated in the annular groove on the inner side of the upper part of the releasing ball seat 300, the secondary pin 203 can be sheared by continuing to press, then the releasing ball seat 300 moves downward, the locking claw 201 is released, and then the pipe string can be released by lifting the pipe string.

[0041] The use method of the utility model:

[0042] The first level pin 501 is sheared in the initial state of the tool, the opening sliding sleeve 500 moves downward to the inner convex ring of the lower inner wall of the male buckle 700, then the circulation hole 401 is opened, the inside of the pipe string is communicated with the annular space to reach the transition state of the tool, then the secondary pin 203 can be sheared by continuing to press after the steel ball 800 is pumped into the annular groove on the inner side of the upper part of the releasing ball seat 300, the releasing ball seat 300 moves downward to reach the final state of the tool, and then the pipe string can be released by lifting the pipe string.

[0043] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0044] In the description of the utility model, it is necessary to explain that, unless another explicit stipulation and limit, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can indirectly connect through the intermediate medium, can be two elements inside the communication.For ordinary skilled person in the art, the specific meaning of the above-mentioned terms in the utility model can be understood through specific circumstances.

[0045] The applicant declares that the above is only the specific implementation of the utility model, but the protection scope of the utility model is not limited to this, the skilled person in the art should understand that any change or replacement that any person skilled in the art can easily think of within the technical range disclosed by the utility model falls within the protection scope and disclosure range of the utility model.

Claims

1. An internally pressurized open hole drop ball release tool characterized by: The device comprises a female buckle (100), a hand-off sleeve (200), a locking hole sleeve (400) and a male buckle (700) connected in sequence, the hand-off sleeve (200) is internally provided with a hand-off ball seat (300), the locking hole sleeve (400) is internally provided with a hole sliding sleeve (500), and the locking hole sleeve (400) and the hole sliding sleeve (500) are provided with a hole shearing sleeve (600) therebetween.

2. The internally pressurized open hole drop ball tool of claim 1, wherein: The female buckle (100) is a stepped sleeve structure with a large upper diameter and a small lower diameter, and an outer thread is formed on the outer wall of the small diameter section of the female buckle (100); the small diameter section of the female buckle (100) is inserted into the hand-off sleeve (200) and is threadedly connected with the inner wall of the hand-off sleeve (200); an annular sealing groove is formed on the outer wall of the small diameter section of the female buckle (100), and a sealing ring is arranged in the sealing groove.

3. The internally pressurized open hole drop ball tool of claim 1, wherein: The hand-off sleeve (200) is a sleeve structure, the outer wall of the lower end of the hand-off sleeve (200) is formed with circumferentially distributed insertion grooves; the insertion grooves are inserted with insertion strips arranged at the top end of the locking hole sleeve (400); a sealing ring is arranged between the outer wall of the hand-off sleeve (200) and the inner wall of the locking hole sleeve (400); a plurality of circumferentially distributed full-through pin holes (204) are formed in the middle of the large diameter section of the hand-off sleeve (200), the full-through pin holes (204) are radially arranged, and a two-stage pin (203) is arranged in the full-through pin holes (204).

4. The internally pressurized open hole drop ball tool of claim 1, wherein: The hand-off ball seat (300) is a sleeve structure, the upper outer wall of the hand-off ball seat (300) is formed with an upper convex ring (302), and the lower outer wall of the hand-off ball seat (300) is formed with a lower convex ring (303); the upper convex ring (302) is formed with a plurality of circumferentially distributed half-through pin holes (304), the half-through pin holes (304) are matched with the two-stage pin (203) to realize the fixed connection of the hand-off sleeve (200) and the hand-off ball seat (300); a plurality of circumferentially distributed full-through communication holes (301) are formed on the outer wall of the hand-off ball seat (300) below the upper convex ring (302).

5. The internally pressurized open hole ball drop tool of claim 1, wherein: The upper inner wall of the hand-off ball seat (300) is formed with a ring groove gradually reduced in diameter from top to bottom, the minimum inner diameter of the ring groove is not greater than the diameter of the steel ball (800), and the maximum inner diameter of the ring groove is not less than the diameter of the steel ball (800).

6. The internally pressurized open hole ball drop tool of claim 1, wherein: The top surface of the locking hole sleeve (400) is formed with a plurality of insertion strips circumferentially distributed, the insertion strips are one-to-one correspondingly arranged with the insertion grooves of the hand-off sleeve (200), and the insertion strips are inserted into the insertion grooves of the hand-off sleeve (200); the middle inner wall of the locking hole sleeve (400) is formed with a limiting groove matched with the shape of the locking hook (202); the lower end of the locking hole sleeve (400) is formed with a plurality of circumferentially distributed full-through circulation holes (401); the middle inner wall of the locking hole sleeve (400) is formed with an inner convex ring (402); the lower end inner wall of the locking hole sleeve (400) is formed with a first ring groove and a second ring groove, both the first ring groove and the second ring groove are below the inner convex ring (402), the hole shearing sleeve (600) is arranged in the first ring groove, and the second ring groove is threadedly connected with the male buckle (700); the hole sliding sleeve (500) is below the inner convex ring (402), and a gap is arranged between the top surface of the hole sliding sleeve (500) and the bottom surface of the inner convex ring (402).

7. The internally pressurized open hole ball drop tool of claim 1, wherein: The opening sliding sleeve (500) and the opening shearing sleeve (600) are fixedly connected through a plurality of primary pins (501) uniformly distributed along the circumference; two sealing rings are arranged between the opening sliding sleeve (500) and the locking opening sleeve (400), and the two sealing rings are located on the upper and lower sides of the full-through circulation hole (401) respectively; and a ring groove (502) is formed on the lower outer wall of the opening sliding sleeve (500).

8. The internally pressurized open bore underhand throw tool of claim 1, wherein: The outer wall of the male buckle (700) forms a plurality of full-through radial pressure transmission holes (701) uniformly distributed along the circumference, the full-through radial pressure transmission holes (701) are obliquely downwardly formed, and the inner side end of the full-through radial pressure transmission hole (701) is in communication with the ring groove (502).

9. The internally pressurized open bore underhand throw tool of claim 1, wherein: A sealing ring is arranged between the inner wall of the male buckle (700) and the outer wall of the opening sliding sleeve (500), and the sealing ring is arranged below the full-through radial pressure transmission hole (701); and an inner convex ring is formed on the lower inner wall of the male buckle (700).

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