CN103670324B - Pawl sleeve type hydraulic packer - Google Patents
Pawl sleeve type hydraulic packer Download PDFInfo
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- CN103670324B CN103670324B CN201310402747.5A CN201310402747A CN103670324B CN 103670324 B CN103670324 B CN 103670324B CN 201310402747 A CN201310402747 A CN 201310402747A CN 103670324 B CN103670324 B CN 103670324B
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Abstract
<b> the present invention relates to packer technology field in underground work, be a kind of pawl sleeve type hydraulic packer, its </b><bGreatT.Gre aT.GT comprises body, pawl cover, piston bush and lower interstage sleeve; The external wall of upper portion of body is fixed with the positive stop lug boss of annular, body outer wall below positive stop lug boss is set with expansion assembly, what the bottom outer wall of expansion assembly had external diameter to reduce successively from top to bottom topping bar and getting out of a predicament or an embarrassing situation, the body outer wall of lower end of getting out of a predicament or an embarrassing situation is installed with upper baffle ring, the lower end seat of getting out of a predicament or an embarrassing situation is on the upper surface of upper baffle ring, be installed with the adapter sleeve that external diameter is equal with external diameter of topping bar on getting out of a predicament or an embarrassing situation, the external diameter of pawl cover is equal with the external diameter of adapter sleeve.Reasonable and compact in structure of the present invention, easy to use, effectively can ensure that the mistake seat of packer in well process is hung by the cooperation of pawl cover and piston bush, </b><bGreatT.Gre aT.GT can make the present invention set by hydraulic action, the design of pawl prevents the deblocking of the present invention after setting, </b><bGreatT.Gre aT.GT thus ensure effective enforcement of down-hole completion practice.</b>
Description
Technical field
the present invention relates to packer technology field in underground work, is a kind of pawl sleeve type hydraulic packer.
Background technology
completion practice is the important technical being connected drilling well and oil producing operation, and meanwhile, completion is again the underground work of dangerous, and therefore, the success or not of completion practice, will directly cause the success or failure of a bite well.Particularly current, that explores along with shale gas, fine and close wet goods unconventionaloil pool field deepens continuously, and people are for carrying out the research of such Reservoir Development also in continuous reinforcement.For the exploitation of such oil-gas reservoir, carry out pressure break completion and to be also absolutely necessary technological means.Be no matter the completion practice that the conventional gas and oil completion of hiding or unconventionaloil pool hide Oil/gas Well, an indispensable technological means is exactly the isolation operation utilizing packer to carry out shaft bottom reservoir.In conventional gas and oil is hidden, packer is utilized to carry out the annular space sealing in sleeve pipe, the sealing between bore hole reservoir and tubing string; Hide in completion practice at unconventionaloil pool, also need to utilize the isolation that packer carries out between annular space sealing in sleeve pipe and different reservoir, therefore, packer is requisite technological means in completion practice, and the importance of packer has some idea of.At present, the packer that Oil Field uses, be mostly hydraulic action packer from structural principle, this meaning in the use of packer is all identical; But, the on-the-spot hydraulic packer used carries out design effectively owing to not sitting extension to the mistake of packer, therefore, at the scene in work progress, with regard to packer technology, it is comparatively large that appearance misses the possibility of sitting extension, if entering the mistake seat extension occurring packer in well process, bring very big inconvenience will to follow-up completion practice, even cannot the generation of serious accident of normal construction by there will be this well.
Summary of the invention
the invention provides a kind of pawl sleeve type hydraulic packer, overcome the deficiency of above-mentioned prior art, easily there is the problem of seat extension by mistake in its hydraulic packer that effectively can solve current onsite application.
technical scheme of the present invention is realized by following measures: a kind of pawl sleeve type hydraulic packer, comprises body, pawl cover, piston bush and lower interstage sleeve, the external wall of upper portion of body is fixed with the positive stop lug boss of annular, body outer wall below positive stop lug boss is set with expansion assembly, what the bottom outer wall of expansion assembly had external diameter to reduce successively from top to bottom topping bar and getting out of a predicament or an embarrassing situation, the body outer wall of lower end of getting out of a predicament or an embarrassing situation is installed with upper baffle ring, the lower end seat of getting out of a predicament or an embarrassing situation is on the upper surface of upper baffle ring, the adapter sleeve that external diameter is equal with external diameter of topping bar is installed with on getting out of a predicament or an embarrassing situation, the external diameter of pawl cover is equal with the external diameter of adapter sleeve, the upper end outer wall of pawl cover has the mounting groove of annular, the lower end inner wall of adapter sleeve and the outer wall of mounting groove are fixedly installed togather, the lower end edge circumference of pawl cover is fixed with the blade tooth of at least two, the lower end of each blade tooth is fixed with the pawl head that internal diameter and external diameter are all greater than blade tooth internal diameter and external diameter, be set with internal diameter on topping bar and overlap the urceolus that external diameter matches respectively with adapter sleeve external diameter and pawl, the outer tube inner wall of corresponding pawl head there is annular groove, the lower end inner wall of urceolus is fixed with mounting cylinder, the internal diameter of mounting cylinder and the external diameter of body match, piston bush is fixedly mounted on the body outer wall above mounting cylinder by shear pin, the internal diameter of piston bush and external diameter respectively with the external diameter of body and the diameter compatible of urceolus, the upper end of piston bush is fixed with the support tube that internal diameter and external diameter are all less than piston bush internal diameter and external diameter, the outer wall of support tube and the inwall of pawl head fit tightly, the outer end of pawl head is positioned at annular groove, the body outer wall of piston bush upper end is installed with lower baffle ring, support tube between pawl head and lower baffle ring there is accessibke porosity, the body of corresponding accessibke porosity there is inner via hole, the body outer wall of mounting cylinder lower end is installed with retaining baffle ring, the outer wall of mounting cylinder and the upper inside wall of lower interstage sleeve are fixedly installed togather, the lower inner wall of lower interstage sleeve is fixed with the chuck of annular, the upper surface of chuck and the lower surface of retaining baffle ring offset, body outer wall between upper baffle ring and pawl overlap is distributed with crown pawl upward, adapter sleeve inwall between upper baffle ring and pawl overlap is fixed with the land of annular, adapter sleeve inwall between land and pawl overlap there is respectively crown pawl upward, at body, adapter sleeve, in the toroidal cavity formed between land and pawl cover, retaining ring is installed, the inwall of retaining ring is distributed with the crown pawl down matched with the pawl on body outer wall, the outer wall of retaining ring is distributed with the crown pawl down matched with the pawl on adapter sleeve inwall.
here is the further optimization and/or improvements to foregoing invention technical scheme:
above-mentioned expansion assembly comprises sheath, upper rubber cover, lower rubber cover, movable sleeve and rubber tube, the lower end outside of sheath is fixed with sheath lower flange, the lower end outside of upper rubber cover is fixed with rubber cover lower flange, rubber cover upper flange is fixed with outside the upper end of lower rubber cover, movable sleeve upper flange is fixed with outside the upper end of movable sleeve, what the outer wall of movable sleeve has external diameter reduce successively from top to bottom topping bar and getting out of a predicament or an embarrassing situation, body outer wall below positive stop lug boss is set with sheath, body outer wall below sheath is set with rubber cover and sheath lower flange is pressed on the upper end outer wall of rubber cover, body outer wall below upper rubber cover is set with rubber tube and rubber cover lower flange is pressed on the upper end outer wall of rubber tube, body outer wall below rubber tube is set with lower rubber cover and rubber cover upper flange is pressed on the lower end outer wall of rubber tube, body outer wall below lower rubber cover is installed with movable sleeve by shear pin and movable sleeve upper flange is pressed on the lower end outer wall of lower rubber cover, the upper end of upper rubber cover and rubber tube sulfides, the lower end of lower rubber cover and rubber tube sulfides.
above-mentioned movable sleeve above topping bar there is radial upper pressure port.
above-mentioned urceolus between piston bush and mounting cylinder there is radial downforce hole.
sealing ring is installed with between the above-mentioned inwall at movable sleeve and the outer wall of body, sealing ring is installed with between the outer wall of movable sleeve and the inwall of urceolus, sealing ring is installed with between the inwall of pawl cover and the outer wall of body, sealing ring is installed with between the outer wall of pawl cover and the inwall of urceolus, be installed with sealing ring between the inwall of piston bush and the outer wall of body, between the outer wall of piston bush and the inwall of urceolus, be installed with sealing ring.
above-mentioned get out of a predicament or an embarrassing situation on be installed with the external diameter adapter sleeve equal with external diameter of topping bar by screw thread, the lower end inner wall of adapter sleeve and the outer wall of mounting groove are fixedly installed togather by screw thread, and the outer wall of mounting cylinder and the upper inside wall of lower interstage sleeve are fixedly installed togather by screw thread.
reasonable and compact in structure of the present invention, easy to use, effectively can ensure that the mistake seat of packer in well process is hung by the cooperation of pawl cover and piston bush, the present invention can be made to set by hydraulic action, the design of pawl prevents the deblocking of the present invention after setting, thus ensures effective enforcement of down-hole completion practice.
Accompanying drawing explanation
fig. 1 is that the master of preferred embodiment looks half section structural representation.
fig. 2 is that duty master when support tube and pawl head depart from the present invention looks half section structural representation.
fig. 3 is that duty master when rubber tube expands in the present invention looks half section structural representation.
fig. 4 is that the master of median claw of the present invention cover+blade tooth+pawl head looks half section structure for amplifying schematic diagram.
coding in figure is respectively: 1 is body, 2 is positive stop lug boss, 3 for topping bar, 4 for getting out of a predicament or an embarrassing situation, 5 is upper baffle ring, 6 is adapter sleeve, 7 is pawl cover, 8 is mounting groove, 9 is blade tooth, 10 is pawl head, 11 is urceolus, 12 is annular groove, 13 is mounting cylinder, 14 is piston bush, 15 is support tube, 16 is lower baffle ring, 17 is accessibke porosity, 18 is inner via hole, 19 is retaining baffle ring, 20 is lower interstage sleeve, 21 is chuck, 22 is land, 23 is retaining ring, 24 is shear pin, 25 is sheath, 26 is sheath lower flange, 27 is upper rubber cover, 28 is rubber cover lower flange, 29 is lower rubber cover, 30 is rubber cover upper flange, 31 is movable sleeve, 32 is movable sleeve upper flange, 33 is rubber tube, 34 is upper pressure port, 35 is downforce hole, 36 is sealing ring, 37 is shear pin.
Detailed description of the invention
the present invention by the restriction of following embodiment, can not determine concrete embodiment according to technical scheme of the present invention and actual conditions.
in the present invention, for convenience of description, the description of the relative position relation of each parts is all be described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. determines according to the Butut direction of Figure of description.
below in conjunction with embodiment and accompanying drawing, the invention will be further described:
as shown in accompanying drawing 1,4, this pawl sleeve type hydraulic packer comprises body 1, pawl cover 7, piston bush 14 and lower interstage sleeve 20, the external wall of upper portion of body 1 is fixed with the positive stop lug boss 2 of annular, body 1 outer wall below positive stop lug boss 2 is set with expansion assembly, what the bottom outer wall of expansion assembly had external diameter to reduce successively from top to bottom tops bar 3 and get out of a predicament or an embarrassing situation 4, body 1 outer wall of 4 lower ends of getting out of a predicament or an embarrassing situation is installed with upper baffle ring 5, get out of a predicament or an embarrassing situation 4 lower end seat on the upper surface of upper baffle ring 5, get out of a predicament or an embarrassing situation on 4 and be installed with the external diameter adapter sleeve 6 equal with 3 external diameters of topping bar, the external diameter of pawl cover 7 is equal with the external diameter of adapter sleeve 6, the upper end outer wall of pawl cover 7 has the mounting groove 8 of annular, the lower end inner wall of adapter sleeve 6 and the outer wall of mounting groove 8 are fixedly installed togather, the lower end edge circumference of pawl cover 7 is fixed with the blade tooth 9 of at least two, the lower end of each blade tooth 9 is fixed with the pawl head 10 that internal diameter and external diameter are all greater than blade tooth 9 internal diameter and external diameter, top bar and to be set with internal diameter on 3 and to overlap the urceolus 11 that 7 external diameters match respectively with adapter sleeve 6 external diameter and pawl, urceolus 11 inwall of corresponding pawl head 10 there is annular groove 12, the lower end inner wall of urceolus 11 is fixed with mounting cylinder 13, the internal diameter of mounting cylinder 13 and the external diameter of body 1 match, piston bush 14 is fixedly mounted on body 1 outer wall above mounting cylinder 13 by shear pin 24, the internal diameter of piston bush 14 and external diameter respectively with the external diameter of body 1 and the diameter compatible of urceolus 11, the upper end of piston bush 14 is fixed with the support tube 15 that internal diameter and external diameter are all less than piston bush 14 internal diameter and external diameter, the outer wall of support tube 15 and the inwall of pawl head 10 fit tightly, the outer end of pawl head 10 is positioned at annular groove 12, body 1 outer wall of piston bush 14 upper end is installed with lower baffle ring 16, support tube 15 between pawl head 10 and lower baffle ring 16 there is accessibke porosity 17, the body 1 of corresponding accessibke porosity 17 there is inner via hole 18, body 1 outer wall of mounting cylinder 13 lower end is installed with retaining baffle ring 19, the outer wall of mounting cylinder 13 and the upper inside wall of lower interstage sleeve 20 are fixedly installed togather, the lower inner wall of lower interstage sleeve 20 is fixed with the chuck 21 of annular, the upper surface of chuck 21 and the lower surface of retaining baffle ring 19 offset, upper baffle ring 5 and pawl overlap on body 1 outer wall between 7 and are distributed with crown pawl upward, upper baffle ring 5 and pawl overlap the land 22 adapter sleeve 6 inwall between 7 being fixed with annular, land 22 and pawl overlap on adapter sleeve 6 inwall between 7 crown pawl upward respectively, at body 1, adapter sleeve 6, in the toroidal cavity formed between land 22 and pawl cover 7, retaining ring 23 is installed, the inwall of retaining ring 23 is distributed with the crown pawl down matched with the pawl on body 1 outer wall, the outer wall of retaining ring 23 is distributed with the crown pawl down matched with the pawl on adapter sleeve 6 inwall.In the middle part of body 1, be designed with pawl structure, it effectively can engage with the pawl structure that retaining ring 23 designs, by pawl cover 7 and effective cooperation of piston bush 14, effectively can prevent from of the present inventionly setting by mistake, ensure to enter carrying out smoothly of well process in the present invention, the present invention can be made to set by hydraulic action, ensure carrying out smoothly of completion practice, the present invention is arranged on completion tubular string as a part for completion tubular string, and whole completion tubular string is lowered into planned well deep location according to design attitude, under enter in process, set in advance in order to avoid of the present invention by mistake, devise pawl cover 7(in the present invention as shown in Fig. 1,4), the outer end of pawl head 10 is positioned at annular groove 12, pawl head 10 is pressed in annular groove 12 by support tube 15, can make like this piston bush 14 play to pawl cover 7 supporting role, coordinated with effective between urceolus 11 and piston bush 14 by pawl cover 7, ensure that the present invention enters carrying out smoothly of well, effectively prevent in the process of going into the well because misoperation or other special circumstances cause seat by mistake of the present invention to hang, because occur that sitting the prerequisite of hanging is that pawl head 10 departs from the annular groove 12 that urceolus 11 designs by mistake, because piston bush 14 pairs of pawl heads 10 are played a supporting role, and piston bush 14 carries out axial location by shear pin 24 and lower baffle ring 16, therefore, cannot depart from the annular groove 12 of urceolus 11 at lower going-into-well process median claw head 10, thus effectively prevent under enter mistake of the present invention in process and sit extension, after the present invention is lowered into well depth precalculated position according to design attitude, by pitching build the pressure operation make high-pressure fluid by body 1 of the present invention design inner via hole 18 enter inside of the present invention, under the effect of high-pressure fluid, shear pin 24 is cut off, piston bush 14 comes downwards to the upper end surface of mounting cylinder 13, now, support tube 15 and pawl head 10 depart from (as shown in Figure 2), ground proceeds to suppress operation, under the driving of high-pressure fluid, pawl overlaps 7 up, pawl head 10 departs from (as shown in Figure 3) from the annular groove 12 in urceolus 11, driving expands always radially expands, after expanding into and fitting tightly with outer layer sleeve (or bore hole), of the present invention setting can be achieved, in order to avoid placing the generation of deblocking phenomenon after the present invention sets, pawl structure is designed with in the middle part of body of the present invention, it effectively can engage with the pawl structure that retaining ring 23 designs, when pawl cover 7 moves upward crowded swollen expansion assembly, retaining ring 23 along with pawl cover 7 and adapter sleeve 6 up together, in up process, the pawl structure that retaining ring 23 and body 1 place design all closely meshes together at any time, thus prevent adapter sleeve 6 and pawl after pressure release to overlap 7 descending possibilities, ensure that good the setting of the present invention.
according to actual needs, above-mentioned pawl sleeve type hydraulic packer can be made further optimization and/or improvements:
as shown in Figure 1, expansion assembly comprises sheath 25, upper rubber cover 27, lower rubber cover 29, movable sleeve 31 and rubber tube 33; the lower end outside of sheath 25 is fixed with sheath lower flange 26, the lower end outside of upper rubber cover 27 is fixed with rubber cover lower flange 28, rubber cover upper flange 30 is fixed with outside the upper end of lower rubber cover 29, movable sleeve upper flange 32 is fixed with outside the upper end of movable sleeve 31, what the outer wall of movable sleeve 31 has external diameter reduce successively from top to bottom tops bar 3 and get out of a predicament or an embarrassing situation 4, body 1 outer wall below positive stop lug boss 2 is set with sheath 25, body 1 outer wall below sheath 25 is set with rubber cover 27 and sheath lower flange 26 is pressed on the upper end outer wall of rubber cover 27, body 1 outer wall below upper rubber cover 27 is set with rubber tube 33 and rubber cover lower flange 28 is pressed on the upper end outer wall of rubber tube 33, body 1 outer wall below rubber tube 33 is set with lower rubber cover 29 and rubber cover upper flange 30 is pressed on the lower end outer wall of rubber tube 33, body 1 outer wall below lower rubber cover 29 is installed with movable sleeve 31 by shear pin 37 and movable sleeve upper flange 32 is pressed on the lower end outer wall of lower rubber cover 29, the upper end of upper rubber cover 27 and rubber tube 33 sulfides, the lower end of lower rubber cover 29 and rubber tube 33 sulfides.
as shown in Figure 1, radial upper pressure port 34 is had topping bar on the movable sleeve 31 above 3.When in the process that adapter sleeve 6 moves, upper pressure port 34 can ensure that lower rubber cover 29 and movable sleeve 31 move smoothly, ensures the smooth expansion of rubber tube 33.
as shown in Figure 1, the urceolus 11 between piston bush 14 and mounting cylinder 13 there is radial downforce hole 35.The design in downforce hole 35, makes when piston bush 14 moves down, and avoids the cavity compression pressure below piston bush 14 to increase and causes piston bush 14 to be difficult to the phenomenon moved down, ensure that moving down smoothly of piston bush 14.
as shown in Figure 1, sealing ring 36 is installed with between the inwall and the outer wall of body 1 of movable sleeve 31, sealing ring 36 is installed with between the outer wall of movable sleeve 31 and the inwall of urceolus 11, sealing ring 36 is installed with between the inwall of pawl cover 7 and the outer wall of body 1, sealing ring 36 is installed with between the outer wall of pawl cover 7 and the inwall of urceolus 11, be installed with sealing ring 36 between the inwall of piston bush 14 and the outer wall of body 1, between the outer wall of piston bush 14 and the inwall of urceolus 11, be installed with sealing ring 36.
as shown in Figure 1, get out of a predicament or an embarrassing situation on 4 and be installed with the external diameter adapter sleeve 6 equal with 3 external diameters of topping bar by screw thread, the lower end inner wall of adapter sleeve 6 and the outer wall of mounting groove 8 are fixedly installed togather by screw thread, and the outer wall of mounting cylinder 13 and the upper inside wall of lower interstage sleeve 20 are fixedly installed togather by screw thread.Be threaded and facilitate installation and removal.
above technical characteristic constitutes most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
Claims (10)
1. a pawl sleeve type hydraulic packer, is characterized in that comprising body, pawl cover, piston bush and lower interstage sleeve, the external wall of upper portion of body is fixed with the positive stop lug boss of annular, body outer wall below positive stop lug boss is set with expansion assembly, what the bottom outer wall of expansion assembly had external diameter to reduce successively from top to bottom topping bar and getting out of a predicament or an embarrassing situation, the body outer wall of lower end of getting out of a predicament or an embarrassing situation is installed with upper baffle ring, the lower end seat of getting out of a predicament or an embarrassing situation is on the upper surface of upper baffle ring, the adapter sleeve that external diameter is equal with external diameter of topping bar is installed with on getting out of a predicament or an embarrassing situation, the external diameter of pawl cover is equal with the external diameter of adapter sleeve, the upper end outer wall of pawl cover has the mounting groove of annular, the lower end inner wall of adapter sleeve and the outer wall of mounting groove are fixedly installed togather, the lower end edge circumference of pawl cover is fixed with the blade tooth of at least two, the lower end of each blade tooth is fixed with the pawl head that internal diameter and external diameter are all greater than blade tooth internal diameter and external diameter, be set with internal diameter on topping bar and overlap the urceolus that external diameter matches respectively with adapter sleeve external diameter and pawl, the outer tube inner wall of corresponding pawl head there is annular groove, the lower end inner wall of urceolus is fixed with mounting cylinder, the internal diameter of mounting cylinder and the external diameter of body match, piston bush is fixedly mounted on the body outer wall above mounting cylinder by shear pin, the internal diameter of piston bush and external diameter respectively with the external diameter of body and the diameter compatible of urceolus, the upper end of piston bush is fixed with the support tube that internal diameter and external diameter are all less than piston bush internal diameter and external diameter, the outer wall of support tube and the inwall of pawl head fit tightly, the outer end of pawl head is positioned at annular groove, the body outer wall of piston bush upper end is installed with lower baffle ring, support tube between pawl head and lower baffle ring there is accessibke porosity, the body of corresponding accessibke porosity there is inner via hole, the body outer wall of mounting cylinder lower end is installed with retaining baffle ring, the outer wall of mounting cylinder and the upper inside wall of lower interstage sleeve are fixedly installed togather, the lower inner wall of lower interstage sleeve is fixed with the chuck of annular, the upper surface of chuck and the lower surface of retaining baffle ring offset, body outer wall between upper baffle ring and pawl overlap is distributed with crown pawl upward, adapter sleeve inwall between upper baffle ring and pawl overlap is fixed with the land of annular, adapter sleeve inwall between land and pawl overlap there is respectively crown pawl upward, at body, adapter sleeve, in the toroidal cavity formed between land and pawl cover, retaining ring is installed, the inwall of retaining ring is distributed with the crown pawl down matched with the pawl on body outer wall, the outer wall of retaining ring is distributed with the crown pawl down matched with the pawl on adapter sleeve inwall.
2. pawl sleeve type hydraulic packer according to claim 1, is characterized in that expansion assembly comprises sheath, upper rubber cover, lower rubber cover, movable sleeve and rubber tube, the lower end outside of sheath is fixed with sheath lower flange, the lower end outside of upper rubber cover is fixed with rubber cover lower flange, rubber cover upper flange is fixed with outside the upper end of lower rubber cover, movable sleeve upper flange is fixed with outside the upper end of movable sleeve, what the outer wall of movable sleeve has external diameter reduce successively from top to bottom topping bar and getting out of a predicament or an embarrassing situation, body outer wall below positive stop lug boss is set with sheath, body outer wall below sheath is set with rubber cover and sheath lower flange is pressed on the upper end outer wall of rubber cover, body outer wall below upper rubber cover is set with rubber tube and rubber cover lower flange is pressed on the upper end outer wall of rubber tube, body outer wall below rubber tube is set with lower rubber cover and rubber cover upper flange is pressed on the lower end outer wall of rubber tube, body outer wall below lower rubber cover is installed with movable sleeve by shear pin and movable sleeve upper flange is pressed on the lower end outer wall of lower rubber cover, the upper end of upper rubber cover and rubber tube sulfides, the lower end of lower rubber cover and rubber tube sulfides.
3. pawl sleeve type hydraulic packer according to claim 2, is characterized in that the movable sleeve above topping bar there is radial upper pressure port.
4. the pawl sleeve type hydraulic packer according to Claims 2 or 3, is characterized in that the urceolus between piston bush and mounting cylinder there is radial downforce hole.
5. the pawl sleeve type hydraulic packer according to Claims 2 or 3, it is characterized in that being installed with sealing ring between the inwall and the outer wall of body of movable sleeve, sealing ring is installed with between the outer wall of movable sleeve and the inwall of urceolus, sealing ring is installed with between the inwall of pawl cover and the outer wall of body, sealing ring is installed with between the outer wall of pawl cover and the inwall of urceolus, be installed with sealing ring between the inwall of piston bush and the outer wall of body, between the outer wall of piston bush and the inwall of urceolus, be installed with sealing ring.
6. pawl sleeve type hydraulic packer according to claim 4, it is characterized in that being installed with sealing ring between the inwall and the outer wall of body of movable sleeve, sealing ring is installed with between the outer wall of movable sleeve and the inwall of urceolus, sealing ring is installed with between the inwall of pawl cover and the outer wall of body, sealing ring is installed with between the outer wall of pawl cover and the inwall of urceolus, be installed with sealing ring between the inwall of piston bush and the outer wall of body, between the outer wall of piston bush and the inwall of urceolus, be installed with sealing ring.
7. the pawl sleeve type hydraulic packer according to claim 1 or 2 or 3, it is characterized in that being installed with the external diameter adapter sleeve equal with external diameter of topping bar by screw thread on getting out of a predicament or an embarrassing situation, the lower end inner wall of adapter sleeve and the outer wall of mounting groove are fixedly installed togather by screw thread, and the outer wall of mounting cylinder and the upper inside wall of lower interstage sleeve are fixedly installed togather by screw thread.
8. pawl sleeve type hydraulic packer according to claim 4, it is characterized in that being installed with the external diameter adapter sleeve equal with external diameter of topping bar by screw thread on getting out of a predicament or an embarrassing situation, the lower end inner wall of adapter sleeve and the outer wall of mounting groove are fixedly installed togather by screw thread, and the outer wall of mounting cylinder and the upper inside wall of lower interstage sleeve are fixedly installed togather by screw thread.
9. pawl sleeve type hydraulic packer according to claim 5, it is characterized in that being installed with the external diameter adapter sleeve equal with external diameter of topping bar by screw thread on getting out of a predicament or an embarrassing situation, the lower end inner wall of adapter sleeve and the outer wall of mounting groove are fixedly installed togather by screw thread, and the outer wall of mounting cylinder and the upper inside wall of lower interstage sleeve are fixedly installed togather by screw thread.
10. pawl sleeve type hydraulic packer according to claim 6, it is characterized in that being installed with the external diameter adapter sleeve equal with external diameter of topping bar by screw thread on getting out of a predicament or an embarrassing situation, the lower end inner wall of adapter sleeve and the outer wall of mounting groove are fixedly installed togather by screw thread, and the outer wall of mounting cylinder and the upper inside wall of lower interstage sleeve are fixedly installed togather by screw thread.
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| CN201310402747.5A CN103670324B (en) | 2013-09-07 | 2013-09-07 | Pawl sleeve type hydraulic packer |
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| CN104251127B (en) * | 2014-09-15 | 2016-08-31 | 宝鸡市赛孚石油机械有限公司 | Controlled hydraulic formula packer |
| CN105041260B (en) * | 2015-07-21 | 2017-12-12 | 中海油能源发展股份有限公司 | A kind of KCMF types pressure expansion formula insertion sealing |
| CN105239955A (en) * | 2015-10-28 | 2016-01-13 | 中国石油天然气股份有限公司 | Step-by-step unsealing anchor packer for gas well |
| CN108086938B (en) * | 2016-11-21 | 2020-03-31 | 中国石油化工股份有限公司 | Packer |
| CN108952619B (en) * | 2018-09-18 | 2023-07-07 | 中国石油天然气集团有限公司 | Mechanical setting type sand control tail pipe top packer |
| CN109372464A (en) * | 2018-12-19 | 2019-02-22 | 中国石油大学(北京) | Packer |
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| US5109925A (en) * | 1991-01-17 | 1992-05-05 | Halliburton Company | Multiple stage inflation packer with secondary opening rupture disc |
| CN2693943Y (en) * | 2004-04-24 | 2005-04-20 | 大庆昊宇石油机械制造有限公司 | Expanding packer |
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| CN103670324A (en) | 2014-03-26 |
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Effective date of registration: 20201109 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Research Institute, No. 68, South Central Road, Urumqi, the Xinjiang Uygur Autonomous Region Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |