CN212054606U - Midway setting-proof hydraulic release packer - Google Patents
Midway setting-proof hydraulic release packer Download PDFInfo
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- CN212054606U CN212054606U CN202020158838.4U CN202020158838U CN212054606U CN 212054606 U CN212054606 U CN 212054606U CN 202020158838 U CN202020158838 U CN 202020158838U CN 212054606 U CN212054606 U CN 212054606U
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Abstract
The utility model relates to a prevent midway and sit and seal hydraulic pressure packer of giving up. The technical scheme is as follows: the pressure relief pipe comprises a releasing part and a well retaining part, wherein the well retaining part is sleeved at the lower part of the releasing part and is connected with a central pipe into a whole through a releasing ring, releasing threads of the releasing ring are left-hand threads, the outer part of the pressure relief pipe and an inner hole of the central pipe are in sliding seal fit through a sealing O ring, and a locking block is in limit fit connection with a stepped hole; the beneficial effects are as follows: 1. the elastic sleeve mechanical self-locking midway setting prevention mechanism solves the problem of midway setting caused by mechanical force; 2. the pin is started in two stages, so that the capability of resisting hydraulic pressure to cause midway setting is improved; 3. the sliding sealing mechanism of the pressure relief pipe realizes hydraulic seal inspection of the oil sleeve annulus; 4. the mechanical back-off and hydraulic double-releasing mechanism ensures reliable releasing, ensures the measure reliability of the whole function of the packer from the running-in, improves the measure success rate of the packer and improves the development benefit of low-grade oil reservoirs.
Description
Technical Field
The utility model relates to an oil field exploitation equipment and method, in particular to prevent midway setting hydraulic pressure release packer.
Background
In the process of oil field exploitation, the packer is widely applied to the technical measures of water injection, oil extraction, fracturing, acidification and the like, and the Y445 series packer is the most widely applied packer. Along with the continuous progress of oil reservoir exploitation, low-grade oil reservoir development puts higher requirements on the packer, a tool is required to be reliably sealed in a setting mode, the packer can be smoothly put into the well under various complex conditions in the process of going into the well, the packer has a casing pipe pressing and sealing checking function, and a Y445 packer with the performance characteristics does not exist at present.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at is exactly to the above-mentioned defect that prior art exists, provides one kind and prevents midway to sit and seals hydraulic pressure release packer, has to prevent midway to sit to seal and the sleeve pipe is suppressed and is tested a function, and this packer still designs has two kinds of release modes of mechanical back-off and hydraulic pressure, ensures that the packer from going into the measure reliability of accomplishing whole function down, improves packer measure success rate, improves low-grade oil reservoir development benefit.
The utility model provides a prevent midway setting hydraulic pressure release packer, its technical scheme is: the pressure relief pipe comprises a releasing part (1) and a well retaining part (2), wherein the well retaining part (2) is sleeved on the lower part of the releasing part (1) and is connected with a central pipe (210) into a whole through a lost ring (120), a releasing thread of the lost ring (120) is a back-off thread, the outside of a pressure relief pipe (123) is in sliding sealing fit with an inner hole of the central pipe (210) through a sixth sealing O ring (122), and a locking block (117) is in limit fit connection with a stepped hole (20101);
the releasing part (1) comprises an upper joint (101), a guide ring (102), a connecting ring (103), a piston cylinder (104), an upper central tube (105), a primary piston (107), a connecting rod (110), a secondary piston (111), a force transmission sleeve (112), a primary starting pin (113), an elastic sleeve (114), a locking block pin (115), a locking block spring (116), a locking block (117), an upper ball seat (119), a throwing ring (120), a pressure relief tube (123) and a steel ball (124), wherein the connecting ring (103) and the guide ring (102) are sequentially sleeved on the upper part of the upper joint (101) from bottom to top, the lower end of the upper joint (101) is connected with the upper central tube (105), the primary piston (107) is sleeved on the upper part of the upper central tube (105), at least one pressure transmission hole is uniformly distributed in the circumferential direction on the upper end of the upper central tube (105), and the secondary piston, the upper end of the connecting rod (110) is fixedly connected with the lower end of the upper central tube (105), the piston cylinder (104) is sleeved outside the upper joint (101), the connecting ring (103), the primary piston (107), the upper central tube (105) and the secondary piston (111),
pass power cover (112), elastic sleeve (114) top-down suit in proper order on connecting rod (110), connecting rod (110) upper end circumference equipartition at least one pass presses the hole, pass power cover (112) start pin (113) link firmly in on connecting rod (110), connecting rod (110) lower extreme and lose bracelet (120) sealing connection, it is connected with last ball seat (119) to lose bracelet (120), go up ball seat (119) lower extreme and pressure release pipe (123) sealing connection, pressure release pipe (123) middle part processing has pressure release channel (12301), the processing of lower part has the sealed face of toper (12302) in pressure release pipe (123), the sealed face of toper (12302) and steel ball (124) sealing contact cooperation.
Preferably, the well-remaining part (2) comprises a connecting pipe (201), a press ring (202), a deblocking fishing head (203), a secondary starting pin (206), a lock ring (208), a sheath (209), a central pipe (210), a deblocking pin (211), a sleeve (213), a sealing barrel assembly (214), a baffle ring (215), an upper cone (216), a slip cover (217), a slip (218), a bow spring (219), an inner protecting cap (221), a lower cone (222) and a back-off guiding lower joint (223), the lower end of the connecting pipe (201) is fixedly connected with the upper end of the press ring (202), a step hole (20101) is formed at the joint of the connecting pipe (201) and the press ring (202), the lower end of the press ring (202) is sleeved at the upper end of the deblocking fishing head (203) and fixedly connected with the deblocking fishing head (203) through the secondary starting pin (206), the lower end of the press ring (202) is fixedly connected with the upper end of the sheath (209, the locking ring (208) is sleeved inside the upper end of the sheath (209) and limited by a step in the sheath (209), the locking ring (208) is radially disconnected, sawtooth-shaped threads are machined on the inner surface of the locking ring, the central tube (210) is matched with the deblocking fishing head (203) and is fixedly connected through a deblocking pin (211), the sawtooth-shaped threads matched with the locking ring (208) are arranged outside the upper end of the central tube (210), the sleeve (213) is sleeved on the central tube (210) and in the sheath (209) through step positioning, and the sealing cylinder assembly (214) and the blocking ring (215) are sequentially sleeved outside the sleeve (213) from top to bottom and are positioned through the lower end of the sheath (209); the upper cone (216) is sleeved on the central pipe (210) and fixedly connected to the lower end of the sleeve (213) through threads, the upper end of the lower cone (222) is connected to the lower end of the central pipe (210), the slip cover (217) is sleeved outside the upper cone (216) and the lower cone (222), slips (218) and bow springs (219) are sequentially assembled in the annular space of the central pipe (210) from inside to outside of the slip cover (217), at least 3 groups of the slips (218) and the bow springs (219) are arranged, the lower end of the slip cover (217) is fixedly connected with an inner protective cap (221), and the lower end of the lower cone (222) is hermetically connected with a reverse-buckling guide lower connector (223) through reverse-buckling threads.
Preferably, the upper end of the piston cylinder (104) is fixedly connected with the lower end of the connecting ring (103) through a thread, the lower end of the piston cylinder (104) is connected with the secondary piston (111) through a third sealing O-ring (109) and a thread in a sealing manner, and the piston cylinder (104) forms sliding sealing fit with the upper joint (101), the primary piston (107) and the upper central tube (105) through a first sealing O-ring (106) and a third sealing O-ring (109).
Preferably, at least 2 locking block grooves (11401) and locking pin holes (11402) are circumferentially and uniformly distributed at the lower end of the elastic sleeve (114), a locking block (117) is placed in the locking block groove (11401), the locking block pin (115) penetrates through the locking pin hole (11402) and is fixedly connected in an interference fit manner, a spring groove (11701) is machined in the locking block (117), a locking block spring (116) is arranged in the spring groove (11701), an elastic claw (11403) of a cantilever structure is machined at the upper end of the elastic sleeve (114), the inner side of the elastic claw (11403) is convex, an annular groove is machined in the circumferential direction of the convex matching part of the connecting rod (110) and the inner side of the elastic claw (11403), and the inner side of the elastic claw (11403) is located in the annular groove of the connecting rod (110) during convex assembling.
Preferably, the lower end of the force transmission sleeve (112) is sleeved outside the elastic claw (11403) so that the elastic sleeve (114) is structurally and fixedly connected to the connecting rod (110).
Preferably, the outside of the lower end of the lost ring (120) is a releasing thread pin (12001), and a positioning step (12002) is machined on the lost ring (120).
Preferably, the sealing cylinder assembly (214) comprises an upper sealing shoulder shield (21401) and a lower sealing shoulder shield (21402), and the sealing shoulder shields (21401) are made of plastic metal materials.
Preferably, inside for releasing screw thread box (21001) in above-mentioned center tube (210) upper end, the releasing screw thread pin (12001) through releasing ring (120) links into an integrated entity with releasing screw thread box (21001) of center tube (210), the releasing screw thread is the back-off screw thread.
Compared with the prior art, the utility model, its beneficial effect is:
1. the elastic sleeve mechanical self-locking midway setting prevention mechanism solves the problem of midway setting caused by mechanical force;
2. the pin is started in two stages, so that the capability of resisting hydraulic pressure to cause midway setting is improved;
3. the sliding sealing mechanism of the pressure relief pipe realizes hydraulic seal inspection of the oil sleeve annulus;
4. the mechanical back-off and hydraulic double-releasing mechanism ensures reliable releasing, ensures the measure reliability of the whole function of the packer from the running-in, improves the measure success rate of the packer and improves the development benefit of low-grade oil reservoirs.
Drawings
Fig. 1 is a schematic view of an overall structure of the present invention;
FIG. 2 is a schematic structural view of the releasing part of the present invention;
FIG. 3 is a schematic structural view of the well-reserving part of the present invention;
fig. 4 is a schematic structural view of the sealing cylinder assembly of the present invention;
FIG. 5 is an isometric view of the elastic sleeve and the locking piece of the present invention;
fig. 6 is a schematic full-section view of the hand-throwing ring of the present invention;
FIG. 7 is a schematic view of the pressure relief tube according to the present invention;
FIG. 8 is an assembled isometric view of the center tube and deblocking fishing head of the present invention;
FIG. 9 is a schematic view of a stepped hole formed by assembling a connecting pipe and a pressing ring according to the present invention;
FIG. 10 is a side view of the slip and slip cover assembly shaft of the present invention;
in the upper diagram: the device comprises a releasing part (1), a well remaining part (2), an upper joint (101), a guide ring (102), a connecting ring (103), a piston cylinder (104), an upper central tube (105), a primary piston (107), a connecting rod (110), a secondary piston (111), a force transmission sleeve (112), a primary starting pin (113), an elastic sleeve (114), a locking block pin (115), a locking block spring (116), a locking block (117), an upper ball seat (119), a lost ring (120), a pressure relief tube (123), a steel ball (124), a first sealing O ring (106), a second sealing O ring (108), a third sealing O ring (109), a fourth sealing O ring (118), a fifth sealing O ring (121) and a sixth sealing O ring (122);
the sealing device comprises a connecting pipe (201), a pressure ring (202), a deblocking fishing head (203), a secondary starting pin (206), a locking ring (208), a sheath (209), a central pipe (210), a deblocking pin (211), a sleeve (213), a sealing barrel assembly (214), a baffle ring (215), an upper cone (216), a slip cover (217), a slip (218), a bow spring (219), an inner protective cap (221), a lower cone (222), a left-hand thread guide lower joint (223), a seventh sealing O ring (204), an eighth sealing O ring (205), a ninth sealing O ring (207), a tenth sealing O ring (212), an eleventh sealing O ring (220) and a twelfth sealing O ring (224).
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Referring to the attached drawings 1-10, the midway setting prevention hydraulic releasing packer comprises a releasing part (1) and a well-remaining part (2).
The upper end of an upper joint (101) of a releasing part (1) is provided with a pipe thread, a connecting ring (103) and a guide ring (102) are sequentially sleeved on the upper part of the upper joint (101) from bottom to top, the guide ring (102) is fixedly connected with the upper joint (101) through a thread, a first-level piston (107) is hermetically sleeved on the upper part of an upper central pipe (105) through a second sealing O-ring (108), the upper end of the upper central pipe (105) is fixedly connected with the lower end of the upper joint (101) through a thread, at least one pressure transmitting hole is circumferentially and uniformly distributed on the upper end of the upper central pipe (105), a second-level piston (111) is hermetically sleeved on the upper part of a connecting rod (110) through the second sealing O-ring (108), the upper end of the connecting rod (110) is fixedly connected with the lower end of the upper central pipe (105) through a thread, and a piston cylinder (104) is sleeved on, The upper end of the piston cylinder (104) is fixedly connected with the lower end of the connecting ring (103) through threads, the lower end of the piston cylinder (104) is in sealing connection with the second-stage piston (111) through a third sealing O ring (109) and threads, the piston cylinder (104) forms sliding sealing fit with the upper joint (101), the first-stage piston (107) and the upper central tube (105) through a first sealing O ring (106) and a third sealing O ring (109), a force transmission sleeve (112) and an elastic sleeve (114) are sequentially sleeved on the connecting rod (110) from top to bottom, at least one pressure transmission hole is uniformly distributed in the circumferential direction of the upper end of the connecting rod (110), the force transmission sleeve (112) is fixedly connected to the connecting rod (110) through a first-stage starting pin (113), at least 2 locking block grooves (11401) and locking pin holes (11402) are uniformly distributed in the circumferential direction of the lower end of the elastic sleeve (114), place locking piece (117) in locking piece groove (11401), locking piece round pin (115) are worn locking piece spring (116) in locking piece hole (11402) interference fit links firmly, processing has spring groove (11701) on locking piece (117), spring groove (11701) built-in locking piece spring (116), elastic claw (11403) that cantilever structure was processed into to elastic sleeve (114) upper end, elastic claw (11403) inboard arch, connecting rod (110) with elastic claw (11403) inboard protruding cooperation part circumference is processed and is had the annular groove, be located the annular groove of connecting rod (110) when elastic claw (11403) inboard protruding assembly, pass power cover (112) lower extreme suit make elastic sleeve (114) structure link firmly in the elastic claw (11403) outside on connecting rod (110), connecting rod (110) lower extreme passes through screw thread and fourth sealed "O" circle (118) and loses bracelet (120) sealing connection, it is thread pin (12001) to lose bracelet (120) lower extreme outside for releasing, it has location step (12002) to process on bracelet (120) to lose, it seals "O" circle (118) and location step (12002) location rotary seal to connect through the fourth with last ball seat (119) to lose bracelet (120), it seals "O" circle (121) and pressure release pipe (123) sealing connection through screw thread and fifth to go up ball seat (119) lower extreme, pressure release pipe (123) middle part processing has pressure release passageway (12301), the processing of lower part has the sealed face of toper (12302) in pressure release pipe (123), the sealed face of toper (12302) and steel ball (124) sealing contact cooperation.
The lower end of a connecting pipe (201) of the well reserving part (2) is fixedly connected with the upper end of a pressing ring (202), a step hole (20101) is formed at the joint of the connecting pipe (201) and the pressing ring (202), the lower end of the pressing ring (202) is sleeved at the upper end of a deblocking fishing head (203) and fixedly connected with the deblocking fishing head (203) through a secondary starting pin (206), the lower end of the pressing ring (202) is fixedly connected with the upper end of a sheath (209), a locking ring (208) is sleeved inside the upper end of the sheath (209) and limited through a step inside the sheath (209), the locking ring (208) is radially disconnected, a sawtooth-shaped thread is machined on the inner surface, a central pipe (210) is in finger-shaped fit with the deblocking fishing head (203) and fixedly connected through a deblocking pin (211), a releasing thread female buckle (01) is arranged inside the upper end of the central pipe (210), and a sawtooth-shaped thread matched with the locking ring (208), a sleeve (213) is sleeved on the central pipe (210) and in the jacket (209) through step positioning, a sealing barrel assembly (214) and a baffle ring (215) are sequentially sleeved outside the sleeve (213) from top to bottom and positioned through the lower end of the jacket (209), the sealing barrel assembly (214) comprises an upper sealing shoulder shield (21401) and a lower sealing shoulder shield (21402), the sealing shoulder shields (21401) are made of plastic metal materials, an upper cone (216) is sleeved on the central pipe (210) and fixedly connected to the lower end of the sleeve (213) through threads, the upper end of a lower cone (222) is connected to the lower end of the central pipe (210), a slip cover (217) is sleeved outside the upper cone (216) and the lower cone (222), slips (218) and bow springs (219) are sequentially assembled in an annular space of the central pipe (210) from inside to outside of the slip cover (217), and the slips (218) and the bow springs (219) are at least 3 groups, the lower end of the slip cover (217) is fixedly connected with an inner protective cap (221), and the lower end of the lower cone (222) is hermetically connected with a reverse-buckling guide lower connector (223) through reverse-buckling threads and a sealing O-shaped ring (224).
The well-remaining part (2) is sleeved on the lower part of the releasing part (1), a releasing thread male buckle (12001) of a releasing ring (120) and a releasing thread female buckle (21001) of a central pipe (210) are connected into a whole, the releasing thread is a back-off thread, the outside of the pressure relief pipe (123) and the inner hole of the central pipe (210) are in sliding sealing fit through a sixth sealing O ring (122), and a locking block (117) is in limit fit connection with a step hole (20101).
The utility model is connected with a downhole tubing string according to the construction design, after the downhole tubing string is lowered to the design position, the steel ball (124) is thrown in, after the steel ball (124) falls on the conical sealing surface (12302) of the pressure relief pipe (123), the oil pipe and the inner cavity of the hydraulic packer for preventing halfway setting form a sealing cavity, then liquid is pumped into the oil pipe to press the setting, the pressure is transmitted to a first-stage piston (107) and a second-stage piston (111) through a pressure transmitting hole, the generated pressing load is firstly transmitted to a piston cylinder (104), then transmitted to a force transmitting sleeve (112) through the piston cylinder (104), and then transmitted to a first-stage starting pin (113) through the force transmitting sleeve (112), when the pressure of the oil pipe rises to the shearing resistance limit of the first-stage starting pin (113), the first-stage starting pin (113) is sheared off, the hydraulic pressure is sequentially transmitted to a second-stage starting pin (206) downwards by the force transmitting sleeve (112, the secondary starting pin (206) is sheared along with the rise of pressure, finally, hydraulic pressure is transmitted to a sealing barrel assembly (214), a retaining ring (215), an upper cone (216) and a slip (218) in sequence through a jacket (209), the slip (218) is expanded to the wall of a casing and anchored, meanwhile, the sealing barrel assembly (214) deforms under the hydraulic pressure and is finally tensioned to the wall of the casing to seal the upper annular space and the lower annular space of the casing, the setting is completed, the tubing string is rotated forwards after the setting is completed, a releasing thread of a releasing ring (120) is separated from a releasing thread of a central tube (210) to release the releasing thread, the releasing can be realized by pulling off the upper end of the releasing thread of the releasing ring (120) through hydraulic pressure of the tubing, the tubing string is lifted upwards, a releasing part (1) ascends along with the tubing string, the releasing tube (123) is released out of the central tube (210), a sliding seal is failed, a channel (12301) of the releasing tube (123) is communicated with the annular space of an oil sleeve, and (5) pulling out the whole releasing tubular column.
The utility model discloses an at least two-stage piston setting mechanism.
The utility model discloses a sliding seal of pressure release pipe (123) and center tube (210) is with the sleeve pipe on the annular space with prevent midway seat seal hydraulic pressure release packer's inner chamber and keep apart, suppress through the oil jacket annular space and can carry out packer seat and seal the performance verification.
The utility model discloses in-process goes into the well, need put the tubular column repeatedly because of reasons such as construction, thereby produce hydraulic shock in oil pipe, hydraulic shock force at first bears by one-level start pin (113), destroy one-level start pin (113) back when hydraulic shock force, second grade start pin (206) just can the atress, only start pin (206) at the second grade and also be cut off the ability and lead to the midway setting that arouses because of hydraulic shock force, improve and prevent that midway setting hydraulic pressure from giving up the anti hydraulic shock of packer leads to the ability of midway setting.
In the process of lifting and placing the pipe column, hydraulic impact force can be generated, meanwhile, the packer is the largest diameter part on the pipe column due to the fact that midway setting hydraulic releasing is prevented, mechanical impact force is easy to generate when a casing coupling is crossed, the mechanical impact force of the lower part can be directly transmitted to the releasing part (1), and is finally transmitted to the oil pipe, the secondary starting pin (206) cannot be influenced, the mechanical impact force of the upper part is transmitted to the locking block (117) through the limiting of the locking block (117) and the step hole (20101) firstly, and then is transmitted to the elastic sleeve (114) in sequence, the connecting rod (110), the upper joint (101), and finally the oil pipe is transmitted, the secondary starting pin (206) cannot be influenced, and the problem of midway setting.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.
Claims (8)
1. The utility model provides a prevent midway to sit and seal hydraulic pressure packer of giving up which characterized by: the pressure relief pipe comprises a releasing part (1) and a well retaining part (2), wherein the well retaining part (2) is sleeved on the lower part of the releasing part (1) and is connected with a central pipe (210) into a whole through a lost ring (120), a releasing thread of the lost ring (120) is a back-off thread, the outside of a pressure relief pipe (123) is in sliding sealing fit with an inner hole of the central pipe (210) through a sixth sealing O ring (122), and a locking block (117) is in limit fit connection with a stepped hole (20101);
the releasing part (1) comprises an upper joint (101), a guide ring (102), a connecting ring (103), a piston cylinder (104), an upper central tube (105), a primary piston (107), a connecting rod (110), a secondary piston (111), a force transmission sleeve (112), a primary starting pin (113), an elastic sleeve (114), a locking block pin (115), a locking block spring (116), a locking block (117), an upper ball seat (119), a throwing ring (120), a pressure relief tube (123) and a steel ball (124), wherein the connecting ring (103) and the guide ring (102) are sequentially sleeved on the upper part of the upper joint (101) from bottom to top, the lower end of the upper joint (101) is connected with the upper central tube (105), the primary piston (107) is sleeved on the upper part of the upper central tube (105), at least one pressure transmission hole is uniformly distributed in the circumferential direction on the upper end of the upper central tube (105), and the secondary piston, the upper end of the connecting rod (110) is fixedly connected with the lower end of the upper central tube (105), the piston cylinder (104) is sleeved outside the upper joint (101), the connecting ring (103), the primary piston (107), the upper central tube (105) and the secondary piston (111),
pass power cover (112), elastic sleeve (114) top-down suit in proper order on connecting rod (110), connecting rod (110) upper end circumference equipartition at least one pass presses the hole, pass power cover (112) start pin (113) link firmly in on connecting rod (110), connecting rod (110) lower extreme and lose bracelet (120) sealing connection, it is connected with last ball seat (119) to lose bracelet (120), go up ball seat (119) lower extreme and pressure release pipe (123) sealing connection, pressure release pipe (123) middle part processing has pressure release channel (12301), the processing of lower part has the sealed face of toper (12302) in pressure release pipe (123), the sealed face of toper (12302) and steel ball (124) sealing contact cooperation.
2. The hydraulic release packer for preventing halfway setting according to claim 1, which is characterized in that: the well retaining part (2) comprises a connecting pipe (201), a pressing ring (202), a deblocking fishing head (203), a secondary starting pin (206), a locking ring (208), a sheath (209), a central pipe (210), a deblocking pin (211), a sleeve (213), a sealing barrel assembly (214), a baffle ring (215), an upper cone (216), a slip cover (217), a slip (218), a bow spring (219), an inner protecting cap (221), a lower cone (222) and a left-hand thread guiding lower joint (223), wherein the lower end of the connecting pipe (201) is fixedly connected with the upper end of the pressing ring (202), a step hole (20101) is formed at the joint of the connecting pipe (201) and the pressing ring (202), the lower end of the pressing ring (202) is sleeved at the upper end of the deblocking fishing head (203) and fixedly connected with the deblocking fishing head (203) through the secondary starting pin (206), the lower end of the pressing ring (202) is fixedly connected with the upper end of the sheath (209), and the locking ring (208) is sleeved inside the upper end of the pressing ring (209) and the unlocking device comprises a limiting block, wherein a locking ring (208) is disconnected in the radial direction, sawtooth-shaped threads are processed on the inner surface of the locking ring, a central tube (210) is matched with the unlocking fishing head (203) and fixedly connected through an unlocking pin (211), the sawtooth-shaped threads matched with the locking ring (208) are arranged outside the upper end of the central tube (210), a sleeve (213) is sleeved on the central tube (210) and in the sheath (209) through step positioning, and a sealing barrel assembly (214) and a baffle ring (215) are sequentially sleeved outside the sleeve (213) from top to bottom and are positioned through the lower end of the sheath (209); the upper cone (216) is sleeved on the central pipe (210) and fixedly connected to the lower end of the sleeve (213) through threads, the upper end of the lower cone (222) is connected to the lower end of the central pipe (210), the slip cover (217) is sleeved outside the upper cone (216) and the lower cone (222), slips (218) and bow springs (219) are sequentially assembled in the annular space of the central pipe (210) from inside to outside of the slip cover (217), at least 3 groups of the slips (218) and the bow springs (219) are arranged, the lower end of the slip cover (217) is fixedly connected with an inner protective cap (221), and the lower end of the lower cone (222) is hermetically connected with a reverse-buckling guide lower connector (223) through reverse-buckling threads.
3. The hydraulic release packer for preventing halfway setting according to claim 1, which is characterized in that: the upper end of the piston cylinder (104) is fixedly connected with the lower end of the connecting ring (103) through threads, the lower end of the piston cylinder (104) is connected with the secondary piston (111) in a sealing mode through a third sealing O ring (109) and threads, and the piston cylinder (104) is in sliding sealing fit with the upper connector (101), the primary piston (107) and the upper central tube (105) through a first sealing O ring (106) and a third sealing O ring (109).
4. The hydraulic release packer for preventing halfway setting according to claim 1, which is characterized in that: elastic sleeve (114) lower extreme circumference equipartition 2 at least locking piece groove (11401) and lockpin hole (11402), lay locking piece (117) in locking piece groove (11401), locking piece round pin (115) are worn interference fit links firmly in lockpin hole (11402), processing has spring groove (11701) on locking piece (117), install locking piece spring (116) in spring groove (11701), elastic claw (11403) that elastic sleeve (114) upper end was processed into cantilever structure, elastic claw (11403) is inboard protruding, connecting rod (110) with the annular groove is processed to the protruding cooperation part circumference in elastic claw (11403) inboard, be located during the protruding assembly in elastic claw (11403) the annular groove of connecting rod (110).
5. The hydraulic release packer of claim 4, which is used for preventing midway setting and is characterized in that: the lower end of the force transmission sleeve (112) is sleeved outside the elastic claw (11403) to ensure that the elastic sleeve (114) is structurally and fixedly connected to the connecting rod (110).
6. The hydraulic release packer for preventing halfway setting according to claim 1, which is characterized in that: the outside thread pin (12001) of giving up of losing the hand ring (120) lower extreme, it has location step (12002) to process on the hand ring of losing (120).
7. The hydraulic release packer for preventing halfway setting according to claim 2, which is characterized in that: the sealing barrel assembly (214) comprises an upper sealing shoulder shield (21401) and a lower sealing shoulder shield (21402), and the sealing shoulder shields (21401) are made of plastic metal materials.
8. The hydraulic release packer for preventing halfway setting according to claim 2, which is characterized in that: the inside releasing thread box (21001) that is of center tube (210) upper end, releasing thread pin (12001) through releasing ring (120) and releasing thread box (21001) of center tube (210) link into an integrated entity, the releasing thread is the back-off screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020158838.4U CN212054606U (en) | 2020-02-10 | 2020-02-10 | Midway setting-proof hydraulic release packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020158838.4U CN212054606U (en) | 2020-02-10 | 2020-02-10 | Midway setting-proof hydraulic release packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212054606U true CN212054606U (en) | 2020-12-01 |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075388A (en) * | 2020-02-10 | 2020-04-28 | 山东博赛特石油技术有限公司 | Midway setting prevention hydraulic release packer and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075388A (en) * | 2020-02-10 | 2020-04-28 | 山东博赛特石油技术有限公司 | Midway setting prevention hydraulic release packer and method |
| CN111075388B (en) * | 2020-02-10 | 2024-04-19 | 山东博赛特石油技术有限公司 | Hydraulic releasing packer and method for preventing midway setting |
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