CN204163680U - A kind of rotating hydraulic packer - Google Patents

A kind of rotating hydraulic packer Download PDF

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Publication number
CN204163680U
CN204163680U CN201420612541.5U CN201420612541U CN204163680U CN 204163680 U CN204163680 U CN 204163680U CN 201420612541 U CN201420612541 U CN 201420612541U CN 204163680 U CN204163680 U CN 204163680U
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Prior art keywords
packing
ratchet
internal lock
slips
packer
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Chinese (zh)
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朱进府
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XINJIANG SINOPETROLEUM ENGINEERING Co Ltd
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XINJIANG SINOPETROLEUM ENGINEERING Co Ltd
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Abstract

The utility model discloses a kind of rotating hydraulic packer, the packer top cylinder comprising overall mandrel and be positioned at successively from top to bottom on overall mandrel, slips assembly, packing element seal assembly, set piston assembly and packer doffing, also comprise grappling sealing intubate and tie-back sleeve, tie-back sleeve is fixedly connected on the top of overall mandrel, grappling sealing intubate comprises inserts sealing mandrel, spring spool, spring and ratchet cylinder, the two ends of spring are resisted against on spring spool and ratchet cylinder respectively, the lower surface of spring spool is provided with ratchet, the upper surface of tie-back sleeve is provided with the ratchet corresponding with spring spool lower surface, the inside top of tie-back sleeve is provided with sawtooth button, sawtooth button inside tie-back sleeve matches with the sawtooth of ratchet cylinder lower end.The ratchet of the utility model spring spool and tie-back sleeve engages each other, and whole tubing string can bear moment of torsion, packer can be rotated and can not damage packer, and time simultaneously to old well reform sidetracking, the sleeve pipe that can reuse old well hangs.

Description

A kind of rotating hydraulic packer
Technical field
The utility model relates to packer field, is specifically related to a kind of rotating hydraulic packer.
Background technology
Packer is the important down-hole zone isolation instrument of oil-gas mining; Main Function protects the sleeve pipe of low grade of steel from the corrosion of hazardous medium and external force to the squeeze and destroy of sleeve pipe; be widely used in the fields such as completion, oil recovery, water filling, reservoir reconstruction and underground work, for the normal production of Oil/gas Well and various technological measure provide effective guarantee.Packer is all start working after target zone lower, no matter is fluid pressure type or mechanical packer, limits by packer construction, all can not rotate entering in well process, otherwise will cause damage to packer.Enter in well process in some sleeve pipe generation slight deformation or horizontal well tubing string, easily there is the phenomenon that hangs tag, now, often need just to arrive projected depth below by up and down or rotation tubing string, otherwise tubing string will be proposed, cause the raising of cost of production, especially in horizontal well, due to horizontal well Open-Hole Section collapse or well track change greatly, the packer at top not only will hang very heavy horizontal fragmentation tubing string, also to prevent under enter the hole shrinkage that may occur in process or the deposit collapsed causes tubing string not descend projected depth; Simultaneously because horizontal well drilling cost is high, suspension arrangement originally all can not meet the recycling of casing section, main cause is that original suspension arrangement can not deblocking, milling tool milling is entered under needing when wanting deblocking, cause damage to former casing or directly discard suspension arrangement with well-sinking, therefore existing packer mainly contains following problem needs to solve:
1, make packer enter in well process and can rotate, and can not packer be damaged in rotary course;
2, when to old well reform sidetracking, the sleeve pipe reusing old well carries out sidetracking, does not cause damage to the sleeve pipe of old well.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of rotating hydraulic packer, and this packer enters in well process and can rotate, and can not damage packer in rotary course.
The purpose of this utility model carrys out specific implementation by the following technical programs:
A kind of rotating hydraulic packer, the packer top cylinder mainly comprising overall mandrel and be positioned at successively from top to bottom on overall mandrel, slips assembly, packing element seal assembly, set piston assembly and packer doffing, also comprise grappling sealing intubate and tie-back sleeve, described tie-back sleeve is fixedly connected on the top of overall mandrel, described grappling sealing intubate comprises inserts sealing mandrel, spring spool, spring and ratchet cylinder, described spring spool, ratchet cylinder and tie-back sleeve are socketed in successively and insert on sealing mandrel, the two ends of described spring are resisted against on spring spool and ratchet cylinder respectively, the top of described spring spool seals mandrel with insertion and is fixedly connected with, the lower surface of spring spool is provided with ratchet, the upper surface of described tie-back sleeve is provided with the ratchet corresponding with spring spool lower surface, the inside top of described tie-back sleeve is provided with sawtooth button, sawtooth button inside tie-back sleeve matches with the sawtooth of ratchet cylinder lower end.
Further, the cooperation place that the lower end tie-back sleeve of described ratchet cylinder and insertion seal mandrel has been arranged alternately to organize sealing caulking ring and joint ring more, and the bottom of described insertion sealing mandrel is provided with sealing pipe shoe.
Further, described slips assembly comprises seat under the slips seat of honour be set on overall mandrel, slips, slips; Described slips entirety is tubular, and be provided with two-way pawl outside slips, inside slips, two ends are provided with reverse suspension groove; Be two-stage cone structure outside the described slips seat of honour, between the two-stage conical surface, be provided with a step; Under described slips, outside seat, epimere is one-level cone structure, under the described slips seat of honour and slips, the cone structure of seat matches with the suspension groove of slips correspondence direction respectively, the upper end at the described slips seat of honour to extend in packer top cylinder and by a safety pin with fix with packer top cylinder, the top sidewall at the described slips seat of honour is provided with C type ring.
Further, described packing element seal assembly comprises packing element and middle packing element on the packing element back of the body ring be set on overall mandrel, packing element support ring, two, and described middle packing element is on two between packing element, and packing element support ring and packing element back of the body ring are successively set on the outside of packing element.
Further, described upper packing element one end and packing element support ring form fit, other end is tilted 15 °, and middle packing element two ends are outer incline 15 ° and consistent with the inclination angle of upper packing element, described packing element support ring is suppressed doubling by red copper and is cut into, and expands play cushioning effect to upper packing element and middle packing element.
Further, describedly set piston assembly and comprise the piston seat be set on overall mandrel, piston C type ring, piston urceolus, internal lock ratchet cylinder, internal lock ratchet urceolus and internal lock ratchet, described piston seat lower end is plugged on the top of piston urceolus and is fixedly connected with piston urceolus, the upper end of described internal lock ratchet urceolus is plugged on the top of piston urceolus and is fixedly connected with piston urceolus, the side of described internal lock ratchet cylinder is positioned at piston urceolus, the bottom of internal lock ratchet cylinder is fixedly connected with packer doffing, ratchet base is provided with between described internal lock ratchet urceolus and packer doffing, on described ratchet base, grafting is provided with and sets pin, the described bottom setting pin extends on internal lock ratchet cylinder, described internal lock ratchet is between internal lock ratchet cylinder and internal lock ratchet urceolus and fix with internal lock ratchet urceolus, the arranged outside of described internal lock ratchet cylinder has 90 ° of fine threads, the length of described 90 ° of fine threads is much larger than the length of internal lock ratchet, the inner side of described internal lock ratchet urceolus is provided with buttless thread, the inner side of described internal lock ratchet is provided with the 90 ° fine threads consistent with internal lock ratchet cylinder, the arranged outside of internal lock ratchet has and the rightabout buttless thread of internal lock ratchet urceolus, described piston C type ring is between piston seat and internal lock ratchet cylinder, described overall mandrel is provided with pressure transmission hole with piston C type ring corresponding position.
Further, described overall mandrel is one section of outer undergauge section in the bottom of pressure transmission hole.
Further, between described packer doffing and overall mandrel, be provided with safety collar, described safety collar and the clamping of integral core male thread.
Further, the bottom thread of described overall mandrel is connected with lower variable buckle, blocking valve is provided with in described lower variable buckle, described blocking valve comprises valve seat and valve blocks up, described valve is stifled to be fixed in valve seat by pin, one end of described valve seat is resisted against the bottom of overall mandrel, and the other end is resisted against on the spacing shaft shoulder of lower variable buckle, and the upper end diameter that described valve blocks up is less than lower end diameter.
The beneficial effect of a kind of rotating hydraulic of the utility model packer mainly contain following some:
The lower surface of spring spool in the grappling sealing intubate of 1, packer and tie-back sleeve upper surface rely on the elastic force of spring to remain on not contact position, when being obstructed in tubing string bottom, the lower surface of spring spool and the ratchet of tie-back sleeve upper surface engage each other, whole tubing string can bear moment of torsion, packer can be rotated and can not damage packer simultaneously;
2, set employing hydraulic way, suppress in tubing string, just can complete setting operation, not need dynamic tubing string, simple to operate;
3, overall mandrel is monolithic, and intensity is high, can bear moment of torsion;
4, packer bottom is provided with blocking valve, without the need to pitching when setting, shortens the activity duration;
5, when to old well reform sidetracking, after utilizing the sleeve pipe of old well to hang, packer can propose by deblocking, can not cause damage to the sleeve pipe of old well.
Accompanying drawing explanation
According to drawings and embodiments the utility model is described in further detail below.
Fig. 1 is the structural representation of a kind of rotating hydraulic packer of the utility model;
Fig. 2 is the structural representation that grappling sealing intubate and tie-back sleeve connect;
Fig. 3 is the structural representation of slips assembly;
Fig. 4 is the structural representation of packing element seal assembly;
Fig. 5 is the structural representation setting piston assembly;
Fig. 6 is the fit structure schematic diagram of blocking valve and lower variable buckle.
In figure: the overall mandrel of 1-; 2-packer top cylinder; 3-slips assembly; The 301-slips seat of honour; 302-slips; Seat under 303-slips; The two-way pawl of 304-; 305-suspension groove; 306-safety pin; 307-C type ring; 308-guide finger; 4-packing element seal assembly; 401-packing element back of the body ring; 402-packing element support ring; The upper packing element of 403-; Packing element in 404-; 5-sets piston assembly; 501-piston seat; 502-piston C type ring; 503-piston urceolus; 504-internal lock ratchet cylinder; 505-internal lock ratchet urceolus; 506-internal lock ratchet; 507-ratchet base; 508-sets pin; 509-steam vent 6-packer doffing; 7-tie-back sleeve; 8-inserts sealing mandrel; 9-spring spool; 10-spring; 11-ratchet cylinder; 12-ratchet; 13-sawtooth button; 14-sealing caulking ring; 15-joint ring; 16-seals pipe shoe; 17-pressure transmission hole; 18-safety collar; Variable buckle under 19-; 20-valve seat; 21-valve blocks up; The upper variable buckle of 22-.
Detailed description of the invention
As Fig. 1, shown in 2, a kind of rotating hydraulic packer described in the utility model embodiment, the packer top cylinder 2 mainly comprising overall mandrel 1 and be positioned at successively from top to bottom on overall mandrel 1, slips assembly 3, packing element seal assembly 4, set piston assembly 5 and packer doffing 6, also comprise grappling sealing intubate and tie-back sleeve 7, tie-back sleeve 7 is fixedly connected on the top of overall mandrel 1, grappling sealing intubate comprises inserts sealing mandrel 8, spring spool 9, spring 10 and ratchet cylinder 11, spring spool 9, ratchet cylinder 11 and tie-back sleeve 7 are socketed in successively and insert on sealing mandrel 8, the screw top inserting sealing mandrel 8 is connected with variable buckle 22, the two ends of spring 10 are resisted against on spring spool 9 and ratchet cylinder 11 respectively, the top of spring spool 9 seals mandrel 8 with insertion and is threaded, the lower surface of spring spool 9 is provided with ratchet 12, the upper surface of tie-back sleeve 7 is provided with the ratchet 12 corresponding with spring spool 9 lower surface, the inside top of tie-back sleeve 7 is provided with sawtooth button 13, sawtooth button 13 inside tie-back sleeve 7 matches with the sawtooth of ratchet cylinder 11 lower end.
One preferred embodiment, the cooperation place that the lower end tie-back sleeve 7 of ratchet cylinder 11 and insertion seal mandrel has been arranged alternately to organize sealing caulking ring 14 and joint ring 15 more, the bottom of inserting sealing mandrel 8 is provided with sealing pipe shoe 16, the length that sealing pipe shoe 16 upper surface and insertion seal mandrel 8 foot step end face is greater than the total length organizing sealing caulking ring 14 and joint ring 15 more, make spring 10 by compressive state to open configuration time, insert sealing mandrel 8 have up distance.
As shown in Figure 3, slips assembly 3 comprises seat 303 under the slips seat of honour 301 be set on overall mandrel 1, slips 302 and slips; Slips 302 entirety is tubular, and be provided with two-way pawl 304 outside slips 302, inside slips 302, two ends are provided with reverse suspension groove 305; Be two-stage cone structure outside the slips seat of honour 301, between the two-stage conical surface, be provided with a step; Under slips, outside seat 303, epimere is one-level cone structure, under the slips seat of honour 301 and slips, the cone structure of seat 303 matches with the suspension groove 305 of slips 302 correspondence direction respectively, slips 302 and seat 303 under the slips seat of honour 301 and slips are by multiple pin fastener, under the slips seat of honour 301 and slips, seat 303 is provided with guide finger 308, on overall mandrel 1, correspondence is provided with gathering sill, the upper end at the slips seat of honour 301 to be extended in packer top cylinder 2 and is fixed with packer top cylinder 2 by a safety pin 306, the top sidewall at the slips seat of honour 301 is provided with C type ring 307.
As shown in Figure 4, packing element seal assembly 4 comprises the packing element back of the body ring 401 be set on overall mandrel 1, packing element support ring 402, packing element 403 and middle packing element 404 on two, middle packing element 404 is on two between packing element 403, packing element support ring 402 and packing element back of the body ring 401 are successively set on the outside of packing element 403, upper packing element 403 one end and packing element support ring 402 form fit, other end is tilted 15 °, middle packing element 404 two ends are outer incline 15 ° and consistent with the inclination angle of upper packing element 403, packing element support ring 402 is suppressed doubling by red copper and is cut into, upper packing element 403 and middle packing element 404 are expanded and plays cushioning effect.
As shown in Figure 5, set piston assembly 5 and comprise the piston seat 501 be set on overall mandrel 1, piston C type ring 502, piston urceolus 503, internal lock ratchet cylinder 504, internal lock ratchet urceolus 505 and internal lock ratchet 506, piston seat 501 upper end external diameter is greater than packing element seal assembly 4 external diameter 2mm, multiple-sealed ring recess is provided with inside piston seat 501, piston seat 501 lower end is plugged on the top of piston urceolus 503 and is threaded with piston urceolus 503, the upper end of internal lock ratchet urceolus 505 is plugged on the top of piston urceolus 503 and is threaded with piston urceolus 503, the lower end of piston urceolus 503 is provided with steam vent 509, the side of internal lock ratchet cylinder 504 is positioned at piston urceolus 503, inside internal lock ratchet cylinder 504 upper end and outside is respectively arranged with the two seals ring recess staggered, the bottom of internal lock ratchet cylinder 504 is threaded with packer doffing 6, ratchet base 507 is provided with between internal lock ratchet urceolus 505 and packer doffing 6, ratchet base 507 is provided with and sets pin 508, the bottom setting pin 508 extends on internal lock ratchet cylinder 504, internal lock ratchet 506 is between internal lock ratchet cylinder 504 and internal lock ratchet urceolus 505 and with internal lock ratchet urceolus 505 by fixing, the arranged outside of internal lock ratchet cylinder 504 has 90 ° of fine threads, the length of 90 ° of fine threads is much larger than the length of internal lock ratchet 506, the inner side of internal lock ratchet urceolus 505 is provided with buttless thread, the inner side of internal lock ratchet 506 is provided with the 90 ° fine threads consistent with internal lock ratchet cylinder 504, the arranged outside of internal lock ratchet 506 has and the rightabout buttless thread of internal lock ratchet urceolus 505, piston C type ring 502 is between piston seat 501 and internal lock ratchet cylinder 504, piston C type ring 502 is split ring, overall mandrel 1 is provided with pressure transmission hole 17 with piston C type ring 502 corresponding position, overall mandrel 1 is one section of outer undergauge section in the bottom of pressure transmission hole 17.
Preferably, between packer doffing 6 and overall mandrel 1, be provided with safety collar 18, safety collar 18 and the clamping of overall mandrel 1 screw thread.
As shown in Figure 6, the bottom thread of overall mandrel 1 is connected with lower variable buckle 19, be provided with blocking valve in lower variable buckle 19, blocking valve comprises valve seat 20 and valve stifled 21, and valve stifled 21 is fixed in valve seat 20 by pin, one end of valve seat 20 is resisted against the bottom of overall mandrel 1, the other end is resisted against on the spacing shaft shoulder of lower variable buckle 19, and valve blocks up the upper end diameter 1mm less of lower end diameter of 21, when low pressure is greater than upper pressure, valve blocks up the lifting force counteracting of 21 on the step of valve seat 20, and pin does not stress; When upper pressure is greater than low pressure, valve stifled 21 moves downward, and cuts off pin, is slipped to tubing string bottom, without the need to pitching when setting, shorten the activity duration
The utility model mainly contains following duty when concrete use:
One, well duty is entered
Enter well normal condition, grappling sealing intubate inserts tie-back sleeve 7, and the sawtooth of the sawtooth on ratchet cylinder 11 and tie-back sleeve endoporus is buckled and engaged completely, and now spring spool 9 is separated with tie-back sleeve 7 upper surface.When entering that well casing post is descending to be hampered, tie-back sleeve 7 is motionless, namely ratchet cylinder 11 is motionless, insert sealing mandrel 8 and spring spool 9 descending, Compress Spring 10, the ratchet 12 of spring spool 9 lower surface and tie-back sleeve 10 upper surface is meshed, when inserting sealing mandrel 8 and turning right, whole packer turns right, and realizes tubing string and rotates, and can not damage packer in rotary course simultaneously.
Two, packer set
Suppress in the tubing string of upper end, pressure is through the pressure transmission hole 17 upwardly piston seat 501 of overall mandrel 1, piston seat 501 is up, extruding packing element back of the body ring 401, packing element support ring 402, upper packing element 403, seat 303 under middle packing element 404 and slips, when seat under slips 303 moves, strut slips 302, slips 302 is snapped on sleeve pipe motionless, pressure increase in tubing string, piston seat 501 continues up, upper packing element 403 and middle packing element 404 produce expanded radially, Seal Oil cover annular space, when piston seat 501 is up, drive piston urceolus 503, internal lock ratchet urceolus 505, internal lock ratchet 506 and ratchet base 507 up, cut off and set pin 508, internal lock ratchet 506 in internal lock ratchet cylinder 504 outside hypomere the fine thread of 90 ° slide, when suppress reach the packing element seal assembly bulbs of pressure time, piston seat 501 no longer moves, after release pressure, internal lock ratchet 506 engages automatically with the fine thread of 90 ° outside hypomere in internal lock ratchet cylinder 504, position is locked, packing element seal assembly is in compressive state forever, realize the upper and lower packing object of packing element seal assembly.
Three, removing seal for packer
Cutting tool is entered in tubing string, to the outer undergauge section of overall mandrel 1, cutting, makes the undergauge place fracture outside of overall mandrel 1, upper lifting pipe post, overall mandrel 1 drives on the slips seat of honour 301 and moves, slips 302 loses support, retraction, and the lug at the slips seat of honour 301 hangs on the suspension groove 305 of slips 302, slips 302 is forced to contraction and moves upward, and realizes slips unfreezing object.When upper lifting pipe post, internal lock ratchet cylinder 504 and internal lock ratchet urceolus 505, internal lock ratchet 506, relative distance between ratchet base 507 and packing element seal assembly 4 become large, and each packing element resilience, diameter diminishes, packing element deblocking.When overall mandrel 1 is not cut off, upper lifting pipe post, when the power above carrying overall mandrel 1 is enough large, safety pin 306 is cut off, and the screw thread on safety collar 18 is pulled, the slips seat of honour 301 under the effect of C type ring 307 on move, slips 302 unfreezing; When safety collar 18 can not be fixed on overall mandrel 1, piston seat 501, piston urceolus 503, internal lock ratchet cylinder 504 and internal lock ratchet urceolus 505, internal lock ratchet 506, ratchet base 507 and packer doffing 6 entirety move down, packing element deblocking, therefore, after utilizing the sleeve pipe of old well to hang, packer can propose by deblocking, can not cause damage to the sleeve pipe of old well.
Last it is noted that the foregoing is only preferred embodiment of the present utility model; be not limited to the utility model; for a person skilled in the art; it still can regulate the technical scheme described in foregoing embodiments; or equivalent replacement is carried out to wherein portion of techniques feature; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (9)

1. a rotating hydraulic packer, the packer top cylinder mainly comprising overall mandrel and be positioned at successively from top to bottom on overall mandrel, slips assembly, packing element seal assembly, set piston assembly and packer doffing, it is characterized in that: also comprise grappling sealing intubate and tie-back sleeve, described tie-back sleeve is fixedly connected on the top of overall mandrel, described grappling sealing intubate comprises inserts sealing mandrel, spring spool, spring and ratchet cylinder, described spring spool, ratchet cylinder and tie-back sleeve are socketed in successively and insert on sealing mandrel, the two ends of described spring are resisted against on spring spool and ratchet cylinder respectively, the top of described spring spool seals mandrel with insertion and is fixedly connected with, the lower surface of spring spool is provided with ratchet, the upper surface of described tie-back sleeve is provided with the ratchet corresponding with spring spool lower surface, the inside top of described tie-back sleeve is provided with sawtooth button, sawtooth button inside tie-back sleeve matches with the sawtooth of ratchet cylinder lower end.
2. a kind of rotating hydraulic packer according to claim 1, it is characterized in that: the cooperation place that the lower end tie-back sleeve of described ratchet cylinder and insertion seal mandrel has been arranged alternately to organize sealing caulking ring and joint ring more, the bottom of described insertion sealing mandrel is provided with sealing pipe shoe.
3. a kind of rotating hydraulic packer according to claim 1 and 2, is characterized in that: described slips assembly comprises seat under the slips seat of honour be set on overall mandrel, slips, slips; Described slips entirety is tubular, and be provided with two-way pawl outside slips, inside slips, two ends are provided with reverse suspension groove; Be two-stage cone structure outside the described slips seat of honour, between the two-stage conical surface, be provided with a step; Under described slips, outside seat, epimere is one-level cone structure, under the described slips seat of honour and slips, the cone structure of seat matches with the suspension groove of slips correspondence direction respectively, the upper end at the described slips seat of honour to extend in packer top cylinder and by a safety pin with fix with packer top cylinder, the top sidewall at the described slips seat of honour is provided with C type ring.
4. a kind of rotating hydraulic packer according to claim 3, it is characterized in that: described packing element seal assembly comprises packing element and middle packing element on the packing element back of the body ring be set on overall mandrel, packing element support ring, two, described middle packing element is on two between packing element, and packing element support ring and packing element back of the body ring are successively set on the outside of packing element.
5. a kind of rotating hydraulic packer according to claim 4, it is characterized in that: described upper packing element one end and packing element support ring form fit, other end is tilted 15 °, middle packing element two ends are outer incline 15 ° and consistent with the inclination angle of upper packing element, described packing element support ring is suppressed doubling by red copper and is cut into, and expands play cushioning effect to upper packing element and middle packing element.
6. according to claim 1, 2, a kind of rotating hydraulic packer described in 4 or 5, it is characterized in that: described in set piston assembly and comprise the piston seat be set on overall mandrel, piston C type ring, piston urceolus, internal lock ratchet cylinder, internal lock ratchet urceolus, internal lock ratchet, described piston seat lower end is plugged on the top of piston urceolus and is fixedly connected with piston urceolus, the upper end of described internal lock ratchet urceolus is plugged on the top of piston urceolus and is fixedly connected with piston urceolus, the side of described internal lock ratchet cylinder is positioned at piston urceolus, the bottom of internal lock ratchet cylinder is fixedly connected with packer doffing, ratchet base is provided with between described internal lock ratchet urceolus and packer doffing, on described ratchet base, grafting is provided with and sets pin, the described bottom setting pin extends on internal lock ratchet cylinder, described internal lock ratchet is between internal lock ratchet cylinder and internal lock ratchet urceolus and fix with internal lock ratchet urceolus, the arranged outside of described internal lock ratchet cylinder has 90 ° of fine threads, the length of described 90 ° of fine threads is much larger than the length of internal lock ratchet, the inner side of described internal lock ratchet urceolus is provided with buttless thread, the inner side of described internal lock ratchet is provided with the 90 ° fine threads consistent with internal lock ratchet cylinder, the arranged outside of internal lock ratchet has and the rightabout buttless thread of internal lock ratchet urceolus, described piston C type ring is between piston seat and internal lock ratchet cylinder, described overall mandrel is provided with pressure transmission hole with piston C type ring corresponding position.
7. a kind of rotating hydraulic packer according to claim 6, is characterized in that: described overall mandrel is one section of outer undergauge section in the bottom of pressure transmission hole.
8. according to a kind of rotating hydraulic packer that claim 7 is stated, it is characterized in that: between described packer doffing and overall mandrel, be provided with safety collar, described safety collar and the clamping of integral core male thread.
9. according to a kind of rotating hydraulic packer described in claim 1,2,4,5,7 or 8, it is characterized in that: the bottom thread of described overall mandrel is connected with lower variable buckle, blocking valve is provided with in described lower variable buckle, described blocking valve comprises valve seat and valve blocks up, described valve is stifled to be fixed in valve seat by pin, one end of described valve seat is resisted against the bottom of overall mandrel, and the other end is resisted against on the spacing shaft shoulder of lower variable buckle, and the upper end diameter that described valve blocks up is less than lower end diameter.
CN201420612541.5U 2014-10-22 2014-10-22 A kind of rotating hydraulic packer Active CN204163680U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105114003A (en) * 2015-09-15 2015-12-02 中石化石油工程技术服务有限公司 Multifunctional oil testing well completion pipe string and method for well prone to blowout and leakage
CN104329046B (en) * 2014-10-22 2017-02-15 新疆华油油气工程有限公司 Rotary hydraulic packer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104329046B (en) * 2014-10-22 2017-02-15 新疆华油油气工程有限公司 Rotary hydraulic packer
CN105114003A (en) * 2015-09-15 2015-12-02 中石化石油工程技术服务有限公司 Multifunctional oil testing well completion pipe string and method for well prone to blowout and leakage

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GR01 Patent grant
C14 Grant of patent or utility model
CB03 Change of inventor or designer information

Inventor after: Zhu Jinfu

Inventor after: Zhang Fuxiang

Inventor after: Li Zhiguo

Inventor after: Ji Xiaohong

Inventor after: Wang Qunqi

Inventor after: Lu Yao

Inventor after: Zhang Hao

Inventor after: Wang Xiaoyong

Inventor before: Zhu Jinfu

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