CN104929563A - Water injection packer - Google Patents
Water injection packer Download PDFInfo
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- CN104929563A CN104929563A CN201510275998.0A CN201510275998A CN104929563A CN 104929563 A CN104929563 A CN 104929563A CN 201510275998 A CN201510275998 A CN 201510275998A CN 104929563 A CN104929563 A CN 104929563A
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Abstract
The invention provides a water injection packer which comprises a center pipe, an upper outer barrel, a backwashing piston, an inner cylinder liner and an upper outer cylinder liner. An upper outer center pipe and a lower outer center pipe sleeve the center pipe, a first backwashing channel is formed between the upper outer center pipe and the center pipe, a second backwashing channel is formed between the lower outer center pipe and the center pipe, and an inner seal checking hole and a first pressurizing hole are further formed in the center pipe; the upper outer barrel sleeves the center pipe, the bottom of the upper outer barrel is butted to a first setting assembly, and a first circulating hole is formed in the upper outer barrel and is communicated with the first backwashing channel; the backwashing piston sleeves the center pipe, and the upper end of the backwashing piston is butted to a second setting assembly; the inner cylinder liner is arranged below the backwashing piston, and the upper end of the inner cylinder liner is butted to the lower end of the center pipe; the upper outer cylinder liner sleeves the backwashing piston and the inner cylinder liner, and a second circulating hole is formed in the upper outer cylinder liner. The water injection packer has the advantage that the technical problem of backwashing failures of existing water injection packers can be solved by the aid of the water injection packer.
Description
Technical field
The present invention relates to field of petroleum exploitation, especially, relate to a kind of water injection packer.
Background technology
At present, in oil extraction process, be supplementary stratum energy, reach balanced flood, and carry out water filling to production zone, the packer that water injection technology is conventional, though kind is a lot of at present, Y341 packer is that Application comparison is a kind of widely, but when using there is Y341 packer existing problems: 1, and backwash was lost efficacy; 2, ground sets flexibly, and after entering well, during water filling, packer lost efficacy; 3, deblocking load is large, and changing tubing string sometimes can not deblocking; 4, water filling layer position progression is restricted, and can only complete below Pyatyi; 5, after setting, packer the problem such as can not to set by secondary.
Summary of the invention
The object of the invention is to provide a kind of water injection packer, to solve the technical problem that existing water injection packer backwash was lost efficacy.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
The invention provides a kind of water injection packer, comprise central tube, its outer cover is provided with exterior central tube and lower exterior central tube, the first backwash passage is formed between upper exterior central tube and central tube, be formed with the second backwash passage between exterior central tube and central tube down, in central tube is also provided with, test sealing of hole and the first pressurization hole; Upper exterior central tube overcoat is provided with first and sets assembly, and lower exterior central tube overcoat is provided with second and sets assembly; Upper urceolus, it is set in outside central tube, and the bottom of upper urceolus and first sets assembly and abuts against, and upper urceolus is provided with the first circulation port, and the first circulation port is connected with the first backwash passage; From testing envelope assembly, it is set in central tube slidably tests outside sealing of hole, set assembly with upper exterior central tube and first respectively from the top testing envelope assembly to abut against, set assembly with lower exterior central tube and second respectively from the bottom testing envelope assembly to abut against, from testing the 3rd backwash passage envelope assembly being provided with connection first backwash passage and the second backwash passage; Backwash piston, it is set in outside central tube; Inner cylinder liner, it is arranged on the below of backwash piston, and the upper end of inner cylinder liner abuts with central tube lower end; Upper outer cylinder sheath, it is set in outside backwash piston and inner cylinder liner, upper outer cylinder sheath is provided with the second circulation port, forms the plunger shaft of backwash piston between central tube and upper outer cylinder sheath, and the first pressurization hole is connected with the plunger shaft of backwash piston.
Further, water injection packer also comprises lower piston, and it is set in the outside of inner cylinder liner, inner cylinder liner is provided with the second pressurization hole driving lower piston; Lower outer cylinder sheath, it is set in the outside of lower piston, and lower piston is abutted against by the lower end of lower outer cylinder sheath and upper outer cylinder sheath; Lower contact, it is connected to the lower end of inner cylinder liner, and upper end and the lower piston of lower contact abut against.
Further, water injection packer also comprises and overlaps self-locking mechanism more, many covers self-locking mechanism is along the circumferential direction disposed on the outside of central tube, self-locking mechanism comprises lock dog, block teeth and from lock tube, self-locking cover is folded between upper outside cylinder and central tube, lock dog is sticked on the outer wall of central tube, block teeth are arranged on between the upper end and lock dog of lock tube, block teeth are connected with lock dog slidably, block teeth are provided with multiple card tooth vertically away from the side of central tube, are provided with the multiple draw-in grooves coordinated with the self-locking of multiple card tooth on the inwall of lock tube.
Further, central tube is provided with ring groove, lock dog is arranged on ring groove upper end.
Further, water injection packer also comprises from testing envelope urceolus, and it is set in slidably from testing outside envelope assembly, and the top and first certainly testing envelope urceolus sets assembly and abuts against, and sets assembly abut against bottom it with second, from test envelope urceolus is provided with outside test sealing of hole.
Further, be provided with test sealing of hole from testing on envelope assembly; Set under assembly and second sets the state that assembly sets first, test sealing of hole and test sealing of hole with interior and test sealing of hole outward and be connected respectively.
Further, certainly test envelope assembly and offer inner groovy towards the side of central tube, certainly test envelope assembly and offer outer groove towards the side certainly testing envelope urceolus, inner groovy and outer groove respectively with test sealing of hole and be connected.
Further, first set assembly and comprise packing element, the first packing ring, the first lower rubber cylinder and first time pressure ring on the first upper press ring, first of being set in outside exterior central tube from top to bottom; The upper end of the first upper press ring and the lower end of upper urceolus abut against, and the lower end of first time pressure ring abuts against with from testing to seal assembly and certainly test the upper end sealing urceolus.
Further, second set assembly and comprise packing element, the second packing ring second lower rubber cylinder and second time pressure ring on the second upper press ring, second of being set in outside lower exterior central tube from top to bottom; The upper end of the second upper press ring abuts against with from testing the lower end sealing urceolus, and the upper end of the lower end of second time pressure ring and backwash piston and upper outer cylinder sheath abuts against.
Further, be arranged with trembleuse cup outside lower contact, trembleuse cup is connected with the lower end of lower outer cylinder sheath.
Feature of the present invention and advantage are:
Backwash operation is simple, and success rate is high, easy to operate and control, and backwash is effective, avoids the generation that backwash was lost efficacy, and decreases because backwash was lost efficacy the unnecessary loss caused.
Can carry out from testing envelope, avoid packer to lose efficacy the loss caused; Can be repeatedly setting, thus ensure that packer is effectively setting; Deblocking load is little, disposablely can complete the seperated layer water injection construction technology measure of less than 10 grades.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of water injection packer of the present invention;
Fig. 2 is the A place enlarged diagram of Fig. 1; And
Fig. 3 is the B place enlarged diagram of Fig. 1.
Reference numeral in accompanying drawing is as follows: 10, central tube; 101, sealing of hole is tested in; 102, the first pressurization hole; 103, ring groove; 11, upper exterior central tube; 111, the first upper press ring; 112, packing element on first; 113, the first packing ring; 114, the first lower rubber cylinder; 115, first time pressure ring; 121, the second upper press ring; 122, packing element on second; 123, the second packing ring; 124, the second lower rubber cylinder; 125, second time pressure ring; 12, lower exterior central tube; 13, the first backwash passage; 14, the second backwash passage; 15, upper urceolus; 151, the first circulation port; 16, envelope assembly is certainly tested; 161, sealing of hole is tested; 162, inner groovy; 163, outer groove; 17, envelope urceolus is certainly tested; 171, sealing of hole is tested outward; 18, backwash piston; 19, inner cylinder liner; 191, the second pressurization hole; 20, upper outer cylinder sheath; 201, the second circulation port; 21, lower piston; 22, lower outer cylinder sheath; 231, lock dog; 232, block teeth; 2321, card tooth; 233, from lock tube; 2331, draw-in groove; 234, from lock assembly; 2341, breach; 24, top connection; 25, lower contact; 26, trembleuse cup; 27, cushion space.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1 to Figure 3, the invention provides a kind of water injection packer, comprise central tube 10, its outer cover is provided with exterior central tube 11 and lower exterior central tube 12, the first backwash passage 13 is formed between upper exterior central tube 11 and central tube 10, be formed with the second backwash passage 14 between lower exterior central tube 12 and central tube 10, in central tube 10 is also provided with, test sealing of hole 101 and the first pressurization hole 102; Be arranged with first outside upper exterior central tube 11 and set assembly, be arranged with second outside lower exterior central tube 12 and set assembly; Upper urceolus 15, it is set in outside central tube 10, and the bottom of upper urceolus 15 and first sets assembly and abuts against, and upper urceolus 15 is provided with the first circulation port 151, first circulation port 151 and is connected with the first backwash passage 13; From testing envelope assembly 16, it is set in central tube 10 slidably tests outside sealing of hole 101, set assembly with upper exterior central tube 11 and first respectively from the top testing envelope assembly 16 to abut against, set assembly with lower exterior central tube 12 and second respectively from the bottom testing envelope assembly 16 to abut against, from testing the 3rd backwash passage envelope assembly 16 being provided with connection first backwash passage 13 and the second backwash passage 14; Backwash piston 18, it is set in outside central tube 10; Inner cylinder liner 19, it is arranged on the below of backwash piston 18, and the upper end of inner cylinder liner 19 abuts with central tube 10 lower end; Upper outer cylinder sheath 20, it is set in outside backwash piston 18 and inner cylinder liner 19, upper outer cylinder sheath 20 is provided with the second circulation port 201, forms the plunger shaft of backwash piston 18 between central tube 10 and upper outer cylinder sheath 20, the first pressurization hole 102 is connected with the plunger shaft of backwash piston 18.
Particularly, central tube 10 top is connected with top connection 24, and top connection 24 bottom outside and upper urceolus 15 upper end abut against, the outside of central tube 10 is along the circumferential direction arranged at intervals with overlaps self-locking mechanism more, self-locking mechanism comprises lock dog 231, block teeth 232 and from lock tube 233, self-locking mechanism is folded between urceolus 15 and central tube 10, wherein, self-locking mechanism also has from lock assembly 234, be connected from the lower end of the upper end of lock assembly 234 with top connection 24, be enclosed within slidably outside lock assembly 234 from lock tube 233, lock dog 231 and block teeth 232 are arranged on breach 2341 place from lock assembly 234, lock dog 231 and block teeth 232 are slidably disposed in lock assembly 234, block teeth 232 are arranged on between the upper end of lock tube 233 and lock dog 231, block teeth 232 are provided with multiple card tooth 2321 vertically away from the side of central tube 10, the multiple draw-in grooves 2331 coordinated with the self-locking of multiple card tooth 2321 are set on the inwall of lock tube 233, card tooth 2321 and draw-in groove 2331 are zigzag.Central tube 10 is provided with ring groove 103, lock dog 231 is positioned at the upper end of ring groove 103.Be connected from the upper end of the bottom of lock tube 233 with upper exterior central tube 11.From test envelope assembly 16 be outside equipped with from test envelope urceolus 17, from test envelope urceolus 17 be set in slidably from test envelope assembly 16 on, from test envelope urceolus 17 on be provided with outside test sealing of hole 171.Be provided with test sealing of hole 161 from testing on envelope assembly 16; Setting assembly and second first sets before assembly do not set, and tests sealing of hole 171 outward and tests sealing of hole 161 and stagger and arrange; Set under assembly and second sets the state that assembly sets first, test sealing of hole 161 respectively with test sealing of hole 101 in central tube 10 and test sealing of hole 171 outward and be connected, in this case, assembly and second can be set to first and set assembly and carry out from testing envelope.In the present embodiment, first set assembly and comprise packing element 112, first packing ring 113, first lower rubber cylinder 114 and first time pressure ring 115 on the first upper press ring 111, first of being set in outside exterior central tube 11 from top to bottom; The upper end of the first upper press ring 111 and the lower end of upper urceolus 15 abut against, and the lower end of first time pressure ring 115 abuts against with certainly testing the upper end of sealing assembly 16 and certainly test the upper end sealing urceolus 17 respectively; Second sets assembly comprises packing element 122, second packing ring 123, second lower rubber cylinder 124 and second time pressure ring 125 on the second upper press ring 121, second of being set in outside lower exterior central tube 12 from top to bottom; The upper end of the second upper press ring 121 abuts against with from testing the lower end sealing urceolus 17, the second upper press ring 121 and certainly test to seal between assembly 16 and be provided with cushion space 27, and the lower end of second time pressure ring 125 and the upper end of upper outer cylinder sheath 20 abut against.Backwash piston 18 is arranged between outer cylinder sheath 20 and central tube 10; The top of inner cylinder liner 19 is connected with bottom central tube 10.Inner cylinder liner 19 bottom is connected with lower contact 25, and water injection packer connects bottom tubing string by lower contact 25; Also be arranged with lower outer cylinder sheath 22 and trembleuse cup 26 outside lower contact 25, the upper end of lower outer cylinder sheath 22 and the lower end of upper outer cylinder sheath 20 abut against, and the lower end of lower outer cylinder sheath 22 is connected by pin with trembleuse cup 26, prevent jarring after deblocking.
Further, better setting effect to reach, between inner cylinder liner 19 and lower outer cylinder sheath 22, being also arranged with lower piston 21, inner cylinder liner 19 is provided with the second pressurization hole 191 driving lower piston 21; The upper end of lower piston 21 is abutted against with the lower end of upper outer cylinder sheath 20 by lower outer cylinder sheath 22; The lower end of lower piston 21 and the upper end of lower contact 25 abut against.Suppress when setting, lower piston 21 and backwash piston 18 set assembly to second simultaneously and compress, and then compression first sets assembly, reaches and better sets effect.
Further, inner groovy 162 is offered from testing the side of envelope assembly 16 towards central tube 10, outer groove 163 is offered towards the side certainly testing envelope urceolus 17 from testing envelope assembly 16, inner groovy 162 is connected with the two ends testing sealing of hole 161 respectively with outer groove 163, can ensure to test in certain motion process in time testing envelope sealing of hole 161 simultaneously with interior test sealing of hole 101 and test sealing of hole 171 be outward connected, complete oneself better and test envelope.
As shown in figures 1 and 3, water injection packer of the present invention can set in process in water filling and complete from testing envelope.(not shown by entering sleeve pipe under water injection packer, water injection packer work enters in sleeve pipe and certain position set in sleeve pipe at present and carries out water injection work) in, first suppress to water filling in central tube 10, after central tube 10 internal water flooding, water enters the first pressurization hole 102 and the second pressurization hole 191 bottom central tube 10 under pressure, backwash piston 18 is promoted up from the first pressurization hole 102 water under high pressure entered between central tube 10 and upper outer cylinder sheath 20, lower piston 21 is promoted up from the second pressurization hole 191 water under high pressure entered between inner cylinder liner 19 and lower piston 21, the up promotion of backwash piston 18 second time pressure ring 125 is up, in the up promotion of lower piston 21, outer cylinder sheath 20 is up, and then it is up to promote second time pressure ring 125, compression second sets assembly, outside making after the second upper press ring 121 promotes certainly to test the envelope up segment distance of urceolus 17 (i.e. the second upper press ring 121 and the distance certainly testing the cushion space 27 sealed between assembly 16), test sealing of hole 171 be connected with outer groove 163, sealing of hole 171 and the object tested sealing of hole 161 and be communicated with is tested to reach outer, now, simultaneously up from testing envelope assembly 16 and certainly testing envelope urceolus 17, test sealing of hole 101 when testing sealing of hole 161 with interior and test after sealing of hole 171 is communicated with outward simultaneously, central tube 10 internal liquid just enters into first and sets assembly and second and set assembly and annular space is (not shown, annular space refers to the space between water injection packer outer wall and internal surface of sleeve pipe) between in the closed chamber that formed, set assembly and second to first to set the such two-stage sealing of assembly and carry out from testing envelope, voltage stabilizing 10 minutes, the pressure suppressed does not fall and namely completes from testing envelope.Set tight if first sets assembly, internal liquid returns to outside well by from the annular space between sleeve pipe and water injection packer, pressure drop, and expression sets not tight; Set tight if second sets assembly, the pressure suppressing liquid has intermittent decline, and expression sets not tight.Water injection packer structure of the present invention is simple, set flexibility and reliability, after having set, start working from testing envelope, if have drainage to occur or suppress the fluctuation of pressure intermittence, prove that first sets assembly or second and set assembly and set on casing coupling, set effect bad, carry water injection packer deblocking now, the searching next one sets stuck point and sets.
As depicted in figs. 1 and 2, when water injection packer of the present invention sets, self-locking is effective, after water filling is suppressed, water under high pressure promotes backwash piston 18 and the up compression of lower piston 21 first and sets assembly and second and set assembly and set, now up from testing the upper exterior central tube 11 of envelope assembly 16 promotion, and then promote up from lock tube 233, upwards slide along from lock assembly 234 from lock tube 233; During compression, card tooth 2321 and draw-in groove 2331 coordinate, be similar to ratchet structure, when lock tube 233 is up, block teeth 232, to central tube 10 lateral movement, ensure can normally move upward from lock tube 233, card tooth 2321 and draw-in groove 2331 not exclusively depart from, ensure can only move upward from lock tube 233, can not move downward, when moving downward, draw-in groove 2331 will be blocked by card tooth 2321.When after central tube 10 pressure release, card tooth 2321 and draw-in groove 2331 coordinate, and tightly block from lock tube 233, complete self-locking, make first to set assembly and second and set assembly not resilience, keep setting state.During deblocking, on put on joint 24 and drive central tube 10 up, first sets assembly and second sets assembly and is in the state of setting, keep motionless under the effect of the frictional force produced between sleeve pipe, when the part that lock dog 231 and central tube 10 are fitted enters into ring groove 103 place of central tube 10, lock dog 231 drives block teeth 232 to move to central tube 10 direction, draw-in groove 2331 and Ka Ya 2321 are departed from, unlock descending from lock tube 233, first set assembly and second set assembly compression be released, complete deblocking.When needing the multiple water filling layer of packing, if the common packer used, when upper lifting pipe post carries out deblocking, required strength is exactly that (the water filling number of plies is n) doubly for the n of one-level packing, namely need the upper lift power of deblocking very large, but water injection packer of the present invention, because only need upper lifting pipe post to get final product (very little relative to common packer load) when deblocking, therefore can reach 10 grades of deblockings.The various technological measures such as more than 10 grades seperated layer water injections can be completed; Repeatedly can set, reuse; Simultaneously deblocking is effective, and solution is honored as a queen packing element hydraulic resistance balance, and workman is easy to operate and control.
As shown in Figure 1, when needing anti-flushing well, annular space between sleeve pipe and water injection packer is suppressed, flushing fluid is descending through annular space, due to first set assembly set block circulation, multiple first circulation ports 151 of flushing fluid through upper urceolus 15 bottom enter, the first backwash passage 13 between upper exterior central tube 11 and central tube 10 is entered by the through hole be opened on upper exterior central tube 11, then (not shown through the 3rd backwash passage, 3rd backwash passage runs through whole from testing envelope assembly 16, be communicated with the first backwash passage 13 and the second backwash passage 14), again through the second backwash passage 14 the concentricity pipe 10 of lower exterior central tube 12, it is descending that backwash liquor promotes backwash piston 18, enter in annular space by upper outer cylinder sheath 20 top second circulation port 201, flushing fluid returns on bottom central tube 10, discharge from central tube 10, complete anti-flushing well work.Water injection packer backwash operation of the present invention is simple, and success rate is high, easy to operate and control, and backwash is effective, avoids the generation that backwash was lost efficacy, and decreases because backwash was lost efficacy the unnecessary loss caused.
The foregoing is only several embodiments of the present invention, those skilled in the art can carry out various change or modification to the embodiment of the present invention according to content disclosed in application documents and not depart from the spirit and scope of the present invention.
Claims (10)
1. a water injection packer, is characterized in that, comprising:
Central tube (10), its outer cover is provided with exterior central tube (11) and lower exterior central tube (12), the first backwash passage (13) is formed between described upper exterior central tube (11) and described central tube (10), be formed with the second backwash passage (14) between described lower exterior central tube (12) and described central tube (10), in described central tube (10) is also provided with, test sealing of hole (101) and the first pressurization hole (102); Be arranged with first outside described upper exterior central tube (11) and set assembly, be arranged with second outside described lower exterior central tube (12) and set assembly;
Upper urceolus (15), it is set in described central tube (10) outside, the bottom of described upper urceolus (15) and described first sets assembly and abuts against, described upper urceolus (15) is provided with the first circulation port (151), and described first circulation port (151) is connected with described first backwash passage (13);
From testing envelope assembly (16), it is set in described central tube (10) slidably tests sealing of hole (101) outside, the described top from testing envelope assembly (16) sets assembly with described upper exterior central tube (11) and described first respectively and abuts against, the described bottom from testing envelope assembly (16) sets assembly with described lower exterior central tube (12) and described second respectively and abuts against, described from testing the 3rd backwash passage envelope assembly (16) being provided with and being communicated with described first backwash passage (13) and described second backwash passage (14);
Backwash piston (18), it is set in described central tube (10) outside;
Inner cylinder liner (19), it is arranged on the below of described backwash piston (18), and the upper end of described inner cylinder liner (19) abuts with described central tube (10) lower end;
Upper outer cylinder sheath (20), it is set in described backwash piston (18) and described inner cylinder liner (19) outside, described upper outer cylinder sheath (20) is provided with the second circulation port (201), form the plunger shaft of described backwash piston (18) between described central tube (10) and described upper outer cylinder sheath (20), described first pressurization hole (102) is connected with the plunger shaft of described backwash piston (18).
2. water injection packer as claimed in claim 1, it is characterized in that, described water injection packer also comprises:
Lower piston (21), it is set in the outside of described inner cylinder liner (19), described inner cylinder liner (19) is provided with the second pressurization hole (191) driving described lower piston (21);
Lower outer cylinder sheath (22), it is set in the outside of described lower piston (21), and described lower piston (21) is abutted against by the lower end of described lower outer cylinder sheath (22) with described upper outer cylinder sheath (20);
Lower contact (25), it is connected to the lower end of described inner cylinder liner (19), and upper end and the described lower piston (21) of described lower contact (25) abut against.
3. water injection packer according to claim 1, it is characterized in that, also comprise and overlap self-locking mechanism more, the described self-locking mechanism of many covers is along the circumferential direction disposed on the outside of described central tube (10), described self-locking mechanism comprises lock dog (231), block teeth (232) and from lock tube (233), describedly be folded between described upper urceolus (15) and described central tube (10) from lock tube (233), described lock dog (231) is sticked on the outer wall of described central tube (10), described block teeth (232) are arranged on described between the upper end of lock tube (233) and described lock dog (231), described block teeth (232) are connected with described lock dog (231) slidably, described block teeth (232) are provided with multiple card tooth (2321) vertically away from the side of described central tube (10), describedly on the inwall of lock tube (233), be provided with the multiple draw-in grooves (2331) coordinated with the self-locking of multiple described card tooth (2321).
4. water injection packer according to claim 3, is characterized in that, described central tube (10) is provided with ring groove (103), and described lock dog (231) is arranged on described ring groove (103) upper end.
5. water injection packer according to claim 1, it is characterized in that, also comprise from testing envelope urceolus (17), it is set in described from testing envelope assembly (16) outward slidably, the described top and described first from testing envelope urceolus (17) sets assembly and abuts against, setting assembly with described second bottom it to abut against, describedly testing sealing of hole (171) outward from testing envelope urceolus (17) is provided with.
6. water injection packer according to claim 5, is characterized in that, describedly tests sealing of hole (161) from testing envelope assembly (16) is provided with; Set under assembly and described second sets the state that assembly sets described first, described in test sealing of hole (161) respectively with described in test sealing of hole (101) and test sealing of hole (171) with described and be connected outward.
7. water injection packer according to claim 6, it is characterized in that, describedly offer inner groovy (162) from testing envelope assembly (16) towards the side of described central tube (10), described envelope assembly (16) of certainly testing offers outer groove (163) towards the described side from testing envelope urceolus (17), and described inner groovy (162) and described outer groove (163) are connected with described sealing of hole (161) of testing respectively.
8. water injection packer according to claim 5, it is characterized in that, described first set assembly comprise be set in described upper exterior central tube (11) outside from top to bottom the first upper press ring (111), first on packing element (112), the first packing ring (113), the first lower rubber cylinder (114) and first time pressure ring (115); The upper end of described first upper press ring (111) and the lower end of described upper urceolus (15) abut against, the lower end of described first time pressure ring (115) and described from test seal assembly (16) and described oneself test the upper end sealing urceolus (17) and abut against.
9. water injection packer according to claim 5, it is characterized in that, described second set assembly comprise be set in described lower exterior central tube (12) outside from top to bottom the second upper press ring (121), second on packing element (122), the second packing ring (123) second lower rubber cylinder (124) and second time pressure ring (125); The upper end of described second upper press ring (121) and describedly to abut against from testing the lower end sealing urceolus (17), the lower end of described second time pressure ring (125) and the upper end of described backwash piston (18) and described upper outer cylinder sheath (20) abut against.
10. water injection packer according to claim 2, it is characterized in that, described lower contact (25) outside is arranged with trembleuse cup (26), and described trembleuse cup (26) is connected with the lower end of described lower outer cylinder sheath (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510275998.0A CN104929563B (en) | 2015-05-27 | 2015-05-27 | Water injection packer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510275998.0A CN104929563B (en) | 2015-05-27 | 2015-05-27 | Water injection packer |
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| CN104929563A true CN104929563A (en) | 2015-09-23 |
| CN104929563B CN104929563B (en) | 2017-10-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281634A (en) * | 2018-10-18 | 2019-01-29 | 中国石油化工股份有限公司 | A kind of double Tubing Packers |
| CN109556764A (en) * | 2018-11-30 | 2019-04-02 | 天地科技股份有限公司 | The measure and control device of geostress survey system |
| CN110593803A (en) * | 2019-10-17 | 2019-12-20 | 成都理工大学 | Integrated infinite-stage fracturing packer |
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| CN109556764B (en) * | 2018-11-30 | 2024-04-09 | 天地科技股份有限公司 | Measurement and control device of ground stress measurement system |
| CN110593803A (en) * | 2019-10-17 | 2019-12-20 | 成都理工大学 | Integrated infinite-stage fracturing packer |
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