CN210068067U - Large-drift-diameter water-proof oil extraction packer - Google Patents
Large-drift-diameter water-proof oil extraction packer Download PDFInfo
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- CN210068067U CN210068067U CN201920190017.6U CN201920190017U CN210068067U CN 210068067 U CN210068067 U CN 210068067U CN 201920190017 U CN201920190017 U CN 201920190017U CN 210068067 U CN210068067 U CN 210068067U
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Abstract
The utility model discloses a large-drift-diameter water-proof oil extraction packer, a large-drift-diameter packer and a sealing insertion pipe, wherein a hydraulic seal conveying tool comprises an external hydraulic cylinder, a transition sleeve and a transition mandrel, the hydraulic cylinder is arranged at the upper end of the transition sleeve and used for separating a seal conveying pipe column after setting, the transition sleeve is sleeved on the transition mandrel and used for connecting a setting anchoring mechanism, and the lower end of the transition mandrel is connected with the large-drift-diameter packer; the large-drift-diameter packer comprises a first central pipe, wherein the upper end and the lower end of the first central pipe are respectively provided with a fine-tooth slip, the directions of the fine-tooth slips are opposite to the directions of the clamping teeth, and a plurality of rubber cylinders are uniformly distributed on the first central pipe at intervals; and the sealing insertion pipe is sleeved on the second central pipe and is used for being inserted into the large-drift-diameter packer after the large-drift-diameter packer is successfully released. The utility model discloses can effectively reduce and change the packer because of examining the frequent deblocking that reasons such as pump and measure operation caused, can realize once administering in the validity period of packer, reuse in the validity period reduces and separates and adopts work load and treatment cost.
Description
Technical Field
The utility model belongs to the technical field of oil field cover decreases well and separates to adopt and administer, concretely relates to big latus rectum water proof oil recovery packer.
Background
With the development time of the oil field not being short and prolonged, perforation and breakage of the casing pipe occur successively due to corrosion and the like, the number of wells communicated with an oil layer and a water layer is increased continuously, and the normal exploitation and the effective exertion of the capacity of the oil field are seriously influenced. For low-yield and low-efficiency wells, casing patching or secondary cementing treatment measures are too high in cost, so that mechanical isolation is generally adopted for the casing damage wells, namely a packer is arranged between a production layer and a water layer.
At present, two types of isolation packers are mainly used, one type is a conventional isolation packer, the isolation process of the packer is simple, but the packer needs to be unpacked and lifted out every time a pump is detected and a well is repaired, the effective period is short, and the packer cannot be reused; the other type of packer belongs to a long-service-life insert pipe type packer, only the insert pipe needs to be pulled out during pump inspection, the packer does not need to be unsealed, the insert pipe is inserted again after well completion, but the inner drift diameter is small, the unsealing is needed to be pulled out during measure operation, the cost of the packer is high, and the construction process is complex. Therefore, the two types of packer for separate mining at present can not be reused after operation, so that the effective period of separate mining of an oil well is short, separate mining is frequently performed, and the treatment cost is high.
Disclosure of Invention
The utility model aims to solve the technical problem that to the not enough among the above-mentioned prior art, provide a big latus rectum water proof oil recovery packer, can satisfy 27/8The operation oil pipe can smoothly pass through the packer, one-time treatment can be realized in the validity period of the packer, the packer can be repeatedly used in the validity period, and the workload and treatment cost for frequently removing and replacing the packer caused by pump detection, measure operation and the like can be effectively reduced.
The utility model adopts the following technical scheme:
a large-drift-diameter water-proof oil extraction packer comprises a hydraulic pressure feeding and sealing tool, a large-drift-diameter packer and a sealing insertion pipe, wherein the hydraulic pressure feeding and sealing tool comprises an external hydraulic cylinder, a transition sleeve and a transition mandrel; the large-drift-diameter packer comprises a first central pipe, wherein the upper end and the lower end of the first central pipe are respectively provided with a fine-tooth slip, the clamping directions of the two fine-tooth slips are opposite, and a plurality of rubber cylinders are uniformly distributed on the first central pipe at intervals; and the sealing insertion pipe is sleeved on the second central pipe and is used for being inserted into the large-drift-diameter packer after the large-drift-diameter packer is successfully released.
Specifically, the hydraulic cylinder comprises a cylinder sleeve and a piston, an upper joint is arranged on the upper portion of the cylinder sleeve, the piston is arranged in an annular space formed by the upper joint and the cylinder sleeve, a transition sleeve is arranged in a steel sleeve and connected with the front end of the piston, the lower end of the upper joint is connected with a transition mandrel, and the lower end of the transition mandrel is connected with a first central pipe through reverse threads.
Furthermore, the upper joint is connected with the cylinder sleeve through reverse threads, holes are formed in the cylinder sleeve and communicated with the inner cavity of the piston through the holes, and a sealing structure is preset on the contact surface of the piston to carry out pressure bearing and sealing.
Specifically, big latus rectum packer includes lock sleeve, middle transition axle, one-way slips, long taper sleeve, short taper sleeve, two-way slips and lower clutch, and the lock sleeve cover is at transition spindle and upper end and transition cover lower extreme contact, and middle transition axle, one-way slips, long taper sleeve, sealing ring, packing element, short axle sleeve, two-way slips and lower clutch set gradually from top to bottom on first center tube.
Furthermore, a sealing retainer ring is arranged between the rubber cylinders.
Furthermore, two sides of the sealing retainer ring are provided with inverted conical surfaces.
Furthermore, the lower end of the transition mandrel is of a cone structure.
Specifically, the sealed insertion tube comprises a positioning check ring, an outer tube, a top tube, an upper sealing rubber sleeve, an upper sealing ring, a lower sealing rubber sleeve and a lower check ring, the positioning check ring, the outer tube, the top tube, the upper rubber sleeve, the upper sealing ring, the lower sealing ring and the upper rubber sleeve are sequentially sleeved on the second central tube, the positioning check ring and the outer tube are in threaded connection with the second central tube, and the lower end of the second central tube is in threaded connection with the lower check ring.
Further, the upper end of the second central tube is provided with threads for connecting a completion oil pipe.
Furthermore, the outer surfaces of the upper sealing ring and the lower sealing ring are plated with a layer of chromium.
Compared with the prior art, the utility model discloses following beneficial effect has at least:
the utility model provides a big latus rectum water proof oil recovery packer, including hydraulic pressure feed sealing instrument, big latus rectum packer and sealed intubate realize 27/8The operation oil pipe passes through the packer to carry out measure operation, so that frequent unsealing and replacement of the packer caused by pump detection, measure operation and other reasons can be effectively reduced, one-time treatment can be realized in the validity period of the packer, the packer can be reused in the validity period, and the work load and treatment cost of the isolation mining are reduced.
Furthermore, the external hydraulic cylinder enables the compression stroke to be obviously increased, and the forward transfer sealing pipe column can be separated from the packer after setting.
Furthermore, the lower extreme of transition dabber is provided with the cone, and the better crawl and the locking of the one-way slips of cover on first center tube after the lock sleeve crawls of being convenient for.
Furthermore, the sealing structure of the sealing insertion tube is a rubber cylinder with two sealing sides and two sealing rings in the middle, and the sealing surface is long.
Furthermore, the rubber cylinder and the sealing retainer ring are arranged at intervals, the length of the sealing surface can be optimized and selected according to needs, and the two sides of the sealing retainer ring are provided with the inverted conical surfaces so as to better guide the rubber cylinder to climb onto the conical surface of the sealing retainer ring, so that the sealing retainer ring is better sealed with the casing wall, and the sealing bearing is ensured to be reliable.
Furthermore, the combined design of the one-way slip and the two-way slip is adopted, and the rubber sleeve can be used as a baffle plate after being compressed.
To sum up, the utility model discloses first study design has realized the big latus rectum water proof oil recovery packer that can cross operation oil pipe, can effectively reduce and change the packer because of examining the frequent deblocking that reasons such as pump and measure operation caused, can realize once administering in the validity period of packer, only need change sealed intubate in the validity period and can reuse, reduce and separate and adopt work load and treatment cost.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
FIG. 1 is a combined structure diagram of a hydraulic pressure feed tool and a large-bore packer;
FIG. 2 is a sectional view of a hydraulic pressure feed tool and a large bore packer combined structure;
fig. 3 is a schematic view of the sealed cannula assembly.
Wherein: 1. an upper joint; 2. a cylinder liner; 3. a piston; 4. a transition sleeve; 5. a transition mandrel; 6. a locking sleeve; 7. a middle transition shaft; 8. a first center tube; 9. one-way slips; 10. clamping a taper sleeve; 11. a sealing retainer ring; 12. a rubber cylinder; 13. a short taper sleeve; 14. a bidirectional slip; 15. a lower joint; 16. a second center tube; 17. positioning a retainer ring; 18. an outer tube; 19. jacking pipes; 20. a sealing rubber sleeve is arranged; 21. an upper seal ring; 22. a lower seal ring; 23. a lower sealing rubber sleeve; 24. and a lower retainer ring.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "one side", "one end", "one side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, the large-drift-diameter water-resisting oil extraction packer of the present invention comprises a hydraulic pressure sealing tool, a large-drift-diameter packer and a sealing insertion tube, wherein the hydraulic pressure sealing tool comprises an external hydraulic cylinder, a transition sleeve 4 and a transition mandrel 5, and the transition sleeve 4 is sleeved on the transition mandrel 5 and contacts with a setting anchoring mechanism; the upper end and the lower end of the large-drift-diameter packer are respectively provided with a fine-tooth slip, the directions of the clamping teeth are opposite, and rubber cylinders 12 for sealing are uniformly distributed at intervals inside the large-drift-diameter packer; the sealing insertion pipe is sleeved on the second central pipe 16 and used for being inserted into the large-drift-diameter packer after releasing is successful.
The hydraulic sealing tool comprises an upper connector 1, a cylinder sleeve 2, a piston 3, a transition sleeve 4 and a transition mandrel 5, wherein the upper connector 1 is connected with the cylinder sleeve 2 through reverse threads, and a hole is formed in the upper connector and communicated with an inner cavity of the piston 3; the piston 3 is arranged in an annular space formed by the upper joint 1 and the cylinder sleeve 2, a sealing structure is preset on a contact surface for pressure-bearing sealing, and the front end of the piston 3 and the transition sleeve 4 are arranged in the cylinder sleeve 2 and are connected with the piston 3 through threads; the lower end of the upper joint 1 is connected with a transition mandrel 5, and the lower end of the transition mandrel 5 is connected with a first central pipe 8 through reverse threads.
The large-drift-diameter packer comprises a locking sleeve 6, an intermediate transition shaft 7, a first central pipe 8, a one-way slip 9, a long taper sleeve 10, a sealing retainer ring 11, a rubber sleeve 12, a short taper sleeve 13, a two-way slip 14 and a lower connector 15;
the locking sleeve 6 is sleeved on the transition mandrel 5, the upper end of the locking sleeve is in contact with the lower end of the transition sleeve 4, the middle transition shaft 7, the one-way slip 9, the long taper sleeve 10, the sealing retainer ring 11, the rubber cylinder 12, the short shaft sleeve 13, the two-way slip 14 and the lower connector 15 are sequentially installed on the first central pipe 8 from top to bottom, the sealing retainer ring 11 is arranged between the rubber cylinders 12, the number of the installation groups can be determined according to specific conditions through the sealing retainer ring 11 and the rubber cylinder 12, and the lower connector 15 is connected with the lower end of the first central pipe 8.
Preferably, both sides of the sealing retainer ring 11 are provided with inverted conical surfaces.
Preferably, the lower end of the transition mandrel 5 is provided with a cone, so that the locking sleeve 6 can better climb and lock with the one-way slip 9 sleeved on the central tube 8 after crawling.
Referring to fig. 3, the sealed insertion tube includes a second central tube 16, a positioning retainer ring 17, an outer tube 18, a top tube 19, an upper sealing rubber sleeve 20, an upper sealing ring 21, a lower sealing ring 22, a lower sealing rubber sleeve 23, and a lower retainer ring 24; the positioning retainer ring 17 and the outer tube 18 are in threaded connection with the second central tube 16, the top tube 19, the upper sleeve 20, the upper sealing ring 21, the lower sealing ring 22 and the upper sleeve 23 are sequentially sleeved on the second central tube 16, and the lower end of the second central tube 16 is in threaded connection with the lower retainer ring 24.
Preferably, the sealed cannula second base pipe 16 is threaded at its upper end to facilitate connection to the completion tubing.
Preferably, the outer surfaces of the upper seal ring 21 and the lower seal ring 22 are processed by chrome plating.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The throwing and separate production processes of the large-drift-diameter water-resisting oil production packer are as follows:
when the packer is separated and produced, a hydraulic seal conveying pipe column is connected through a threaded joint reserved in an upper joint 1, when the packer is lowered to a set separation and production position, a ground surface is connected with a pressure pump, the pressure is slowly increased to 25Mpa, a piston 3 pushes a rubber cylinder 12 to be fully compressed, in order to ensure that the packer is reliably set, the pressure is continuously stabilized for 5min, and then the pressure is released to complete the setting;
after setting is finished, positively transferring the sealing pipe column for about 15 circles or when the hanging weight of the sealing pipe column is obviously changed, lifting the sealing pipe column, if the hanging weight is not obviously increased, indicating that the sealing hydraulic cylinder and the packer are successfully separated, if the hanging weight is sharply increased, continuously and positively transferring the sealing pipe column until the hanging weight is not changed in the lifting process, namely determining that the releasing is successful, and then pulling out the sealing pipe column;
the hydraulic cylinder is checked after the pipe sealing column is pulled out, if no abnormal condition exists, the well completion pipe column can be started to be put down, and the well completion pipe column sequentially comprises the following components from bottom to top: the sealing insertion pipe, the oil pipe nipple, the oil pipe, the oil pump and the oil pipe are connected to a wellhead; and (3) slowly lowering the completion pipe string to about 10m above the packer to ensure that the sealing insertion pipe is smoothly and accurately inserted into the large-drift-diameter packer, and pressing the pressure of about 3t to ensure that the insertion pipe and the packer are sealed and bear pressure, so that the well completion production is realized.
If the pump needs to be checked in the later stage, the sealing insertion pipe is directly pulled out without damaging the packer;if sand washing, acidification and other measures are needed, the production string is pulled out and the operation string (the outer diameter is not more than 2) of the packer is put in7/8") operating, when the well is completed, the well completion pipe string with the sealing insertion pipe is lowered again, sealed insertion is carried out, and the production isolation is continued.
The utility model discloses big latus rectum packer indoor test shows, the packer sits and seals up the bearing of back packing element, down the ability all can reach 25MPa, can satisfy the bearing requirement that the cover decreases the well and separate to adopt, sits and seals the back pneumatic cylinder of airing exhaust and take out smoothly, and in addition, the biggest pulling force that this packer intubate was extracted is 3 ~ 4t, and the intubate is changed to the site operation machine of being convenient for.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (10)
1. A large-drift-diameter water-proof oil extraction packer is characterized by comprising a hydraulic pressure feeding and sealing tool, a large-drift-diameter packer and a sealing insertion pipe, wherein the hydraulic pressure feeding and sealing tool comprises an external hydraulic cylinder, a transition sleeve (4) and a transition mandrel (5), the hydraulic cylinder is arranged at the upper end of the transition sleeve (4), the transition sleeve (4) is sleeved on the transition mandrel (5) and used for being connected with a setting and anchoring mechanism, and the lower end of the transition mandrel (5) is connected with the large-drift-diameter packer; the large-drift-diameter packer comprises a first central pipe (8), wherein the upper end and the lower end of the first central pipe (8) are respectively provided with a fine-tooth slip, the clamping directions of the two fine-tooth slips are opposite, and a plurality of rubber cylinders (12) are uniformly distributed on the first central pipe (8) at intervals; the sealing insertion pipe is sleeved on the second central pipe (16) and used for being inserted into the large-drift-diameter packer after the large-drift-diameter packer is successfully released.
2. The large-drift-diameter water-proof oil extraction packer as claimed in claim 1, wherein the hydraulic cylinder comprises a cylinder sleeve (2) and a piston (3), an upper connector (1) is arranged on the upper portion of the cylinder sleeve (2), the piston (3) is arranged in an annular space formed by the upper connector (1) and the cylinder sleeve (2), a transition sleeve (4) is arranged in the cylinder sleeve (2) and connected with the front end of the piston (3), the lower end of the upper connector (1) is connected with a transition mandrel (5), and the lower end of the transition mandrel (5) is in reverse threaded connection with a first central tube (8).
3. The large-drift-diameter water-proof oil extraction packer as claimed in claim 2, wherein the upper joint (1) is in reverse threaded connection with the cylinder sleeve (2), a hole is formed in the cylinder sleeve (2), the hole is communicated with an inner cavity of the piston (3), and a sealing structure is preset on a contact surface of the piston (3).
4. The large-drift-diameter water-stop oil production packer as claimed in claim 1, wherein the large-drift-diameter packer comprises a locking sleeve (6), an intermediate transition shaft (7), a one-way slip (9), a long cone sleeve (10), a short cone sleeve (13), a two-way slip (14) and a lower connector (15), the locking sleeve (6) is sleeved on a transition mandrel (5), the upper end of the locking sleeve is in contact with the lower end of the transition sleeve (4), and the intermediate transition shaft (7), the one-way slip (9), the long cone sleeve (10), a sealing retainer ring (11), a rubber sleeve (12), the short cone sleeve (13), the two-way slip (14) and the lower connector (15) are sequentially arranged on the first central pipe (8) from top to bottom.
5. The large-drift-diameter water-stop oil production packer as claimed in claim 1 or 4, wherein a sealing retainer ring (11) is arranged between the rubber cylinders (12).
6. The large-drift-diameter water-proof oil extraction packer as claimed in claim 5, wherein reverse conical surfaces are arranged on two sides of the sealing retainer ring (11).
7. The large-drift-diameter water-resisting oil production packer as claimed in claim 1 or 4, wherein the lower end of the transition mandrel (5) is of a cone structure.
8. The large-drift-diameter water-resisting oil extraction packer as claimed in claim 1, wherein the sealing insertion pipe comprises a positioning retainer ring (17), an outer pipe (18), a jacking pipe (19), an upper sealing rubber sleeve (20), an upper sealing ring (21), a lower sealing ring (22), a lower sealing rubber sleeve (23) and a lower retainer ring (24), the positioning retainer ring (17), the outer pipe (18), the jacking pipe (19), the upper sealing rubber sleeve (20), the upper sealing ring (21), the lower sealing ring (22) and the lower sealing rubber sleeve (23) are sequentially sleeved on the second central pipe (16), the positioning retainer ring (17) and the outer pipe (18) are in threaded connection with the second central pipe (16), and the lower end of the second central pipe (16) is in threaded connection with the lower retainer ring (24).
9. The large bore riser packer according to claim 8, wherein the upper end of the second base pipe (16) is threaded for connection to a completion tubing.
10. The large-drift-diameter water-proof oil production packer as claimed in claim 8, wherein the outer surfaces of the upper sealing ring (21) and the lower sealing ring (22) are plated with a layer of chromium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920190017.6U CN210068067U (en) | 2019-02-11 | 2019-02-11 | Large-drift-diameter water-proof oil extraction packer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920190017.6U CN210068067U (en) | 2019-02-11 | 2019-02-11 | Large-drift-diameter water-proof oil extraction packer |
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| CN210068067U true CN210068067U (en) | 2020-02-14 |
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| CN201920190017.6U Active CN210068067U (en) | 2019-02-11 | 2019-02-11 | Large-drift-diameter water-proof oil extraction packer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826587A (en) * | 2019-02-11 | 2019-05-31 | 中国石油天然气股份有限公司 | A kind of big orifice Water-isolation oil production packer and its operating method |
| CN114961678A (en) * | 2022-07-25 | 2022-08-30 | 西安石油大学 | Crude oil exploitation device based on microwave |
-
2019
- 2019-02-11 CN CN201920190017.6U patent/CN210068067U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826587A (en) * | 2019-02-11 | 2019-05-31 | 中国石油天然气股份有限公司 | A kind of big orifice Water-isolation oil production packer and its operating method |
| CN109826587B (en) * | 2019-02-11 | 2024-03-26 | 中国石油天然气股份有限公司 | Large-drift-diameter water-proof oil extraction packer and operation method thereof |
| CN114961678A (en) * | 2022-07-25 | 2022-08-30 | 西安石油大学 | Crude oil exploitation device based on microwave |
| CN114961678B (en) * | 2022-07-25 | 2022-10-25 | 西安石油大学 | Crude oil exploitation device based on microwave |
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