CN112901108A - Packer for increasing production and fracturing of petroleum, natural gas and coal bed gas - Google Patents
Packer for increasing production and fracturing of petroleum, natural gas and coal bed gas Download PDFInfo
- Publication number
- CN112901108A CN112901108A CN202110149472.3A CN202110149472A CN112901108A CN 112901108 A CN112901108 A CN 112901108A CN 202110149472 A CN202110149472 A CN 202110149472A CN 112901108 A CN112901108 A CN 112901108A
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- China
- Prior art keywords
- mandrel
- packer
- outer cylinder
- spring
- petroleum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000003345 natural gas Substances 0.000 title claims abstract description 13
- 239000007789 gas Substances 0.000 title claims description 13
- 239000003245 coal Substances 0.000 title claims description 12
- 239000003208 petroleum Substances 0.000 title claims description 12
- 230000000638 stimulation Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 8
- 238000012856 packing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000005284 excitation Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
本发明提供了一种用于石油天然气、煤层气增产压裂的封隔器，包括封隔器主体，封隔器主体由上下设置的上芯轴和下芯轴组成，上芯轴和下芯轴之间内安装有环状滤网，上芯轴的上端连接有上接头，下芯轴的下端连接有下接头，封隔器主体外自上而下依次设有胶筒组件、流通外筒和弹簧，弹簧置于下芯轴外，其上下两端分别设有挡环，其中，位于上方的挡环与设置在下芯轴上端外的台阶相抵，弹簧外套设有外筒，其中，外筒的内腔右端与位于下方的挡环相抵。本发明不仅可保证封隔器上的胶筒组件在解封时能完全收缩，减少工程事故，而且在下井过程中，可防止因压力激动而导致的封隔器中途坐封，从而保证封隔器可快速准确的到达预定深度，保障工程进度。
The invention provides a packer for oil and natural gas and coalbed methane stimulation and fracturing, comprising a packer main body, the packer main body is composed of an upper mandrel and a lower mandrel arranged up and down, the upper mandrel and the lower core An annular filter screen is installed between the shafts, an upper joint is connected to the upper end of the upper mandrel, and a lower joint is connected to the lower end of the lower mandrel. and spring, the spring is placed outside the lower mandrel, and the upper and lower ends of the spring are respectively provided with baffle rings, wherein the baffle ring located on the upper part is in contact with the step arranged outside the upper end of the lower mandrel, and the outer sleeve of the spring is provided with an outer cylinder, wherein the outer cylinder The right end of the inner cavity is in contact with the baffle ring located below. The invention can not only ensure that the rubber cylinder assembly on the packer can be completely contracted when unsealing, reducing engineering accidents, but also can prevent the packer from being set midway due to pressure excitation during the process of going downhole, thereby ensuring the packing The device can quickly and accurately reach the predetermined depth to ensure the progress of the project.
Description
Technical Field
The invention relates to the technical field of packers, in particular to a packer for increasing production and fracturing of petroleum, natural gas and coal bed gas.
Background
The packer is a downhole tool which is connected to a downhole string and used for sealing and isolating an oil pipe and an oil-gas well casing or an open hole well wall annular space.
Disclosure of Invention
In order to solve the problems, the invention discloses a packer for increasing production and fracturing of petroleum, natural gas and coal bed gas.
The specific scheme is as follows:
a packer for increasing production and fracturing of petroleum, natural gas and coal bed gas is characterized in that: including the packer main part, the packer main part comprises the upper mandrel and the lower mandrel that set up from top to bottom, and wherein, the common axis of upper mandrel and lower mandrel, and install annular filter screen in between upper mandrel and the lower mandrel, the upper end of upper mandrel is connected with the top connection, and the lower extreme of lower mandrel is connected with the lower clutch, the outer top-down of packer main part is equipped with packing element subassembly, circulation urceolus and spring in proper order, the upper and lower both ends of packing element subassembly are connected with the lower extreme of top connection and the upper end of circulation urceolus respectively, outside the lower mandrel was arranged in to the spring, and both ends are equipped with respectively about it and keep off the ring, and wherein, the fender ring that is located the top offsets with the step that sets up outside the lower mandrel upper end, the spring overcoat is equipped with the urceolus, wherein.
As a further improvement of the invention, the lower end of the upper mandrel is in threaded connection with the upper end of the lower mandrel.
As a further improvement of the invention, a sealing sleeve is also arranged in the circulation outer cylinder.
As a further improvement of the invention, a valve body is arranged in the upper section of the sealing sleeve.
As a further improvement of the invention, the lower end of the circulation outer cylinder is in threaded connection with the upper end of the outer cylinder.
The invention has the beneficial effects that: overall structure safe and reliable has adopted the spring, not only can force the deblocking packer, guarantees that the packing element subassembly on the packer can contract completely when the deblocking, reduces the engineering accident, and at the in-process of going into the well in addition, can prevent to sit because of the pressure excitedly packer that leads to midway seals to guarantee that the packer can be fast accurate reachs the predetermined depth, guarantee engineering progress.
Drawings
FIG. 1 is a schematic structural diagram of a packer for petroleum, natural gas and coal bed gas stimulation fracturing.
List of reference numerals:
1-upper joint, 2-upper mandrel, 3-valve body, 4-flow-through outer cylinder, 5-sealing sleeve, 6-filter screen, 7-baffle ring, 8-outer cylinder, 9-spring, 10-lower mandrel, 11-lower joint and 12-rubber cylinder component.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.
As shown in the figure, the packer for increasing the production and fracturing of petroleum, natural gas and coal bed gas comprises a packer main body, wherein the packer main body consists of an upper mandrel 2 and a lower mandrel 10 which are arranged up and down, the upper mandrel 2 and the lower mandrel 10 share the same central axis, an annular filter screen 6 is arranged between the upper mandrel 2 and the lower mandrel 10, the upper end of the upper mandrel 2 is connected with an upper joint 1, the lower end of the lower mandrel 10 is connected with a lower joint 11, the packer main body is sequentially provided with a rubber cylinder component 12, a circulation outer cylinder 4 and a spring 9 from top to bottom outside, the upper end and the lower end of the rubber cylinder component 12 are respectively connected with the lower end of the upper joint 1 and the upper end of the circulation outer cylinder 4, the spring 9 is arranged outside the lower mandrel 10, the upper end and the lower end of the spring are respectively provided with a retaining ring 7, wherein the retaining ring 7 positioned above is abutted against a step arranged outside the upper end of the lower mandrel 10, the outer cylinder 8 is sleeved, during testing, water pressure is slowly added in the rubber cylinder assembly, the rubber cylinder assembly is qualified when the pressure is 1.5-2.5MPa, the rubber cylinder assembly is expanded, the rubber cylinder assembly can be correspondingly adjusted by increasing or decreasing the number of the baffle rings 7, and the maximum internal pressurization is not more than 15 MPa.
In the present embodiment, the lower end of the upper spindle 2 is screwed with the upper end of the lower spindle 10; a sealing sleeve 5 is also arranged in the circulation outer cylinder 4; the upper section of the sealing sleeve 5 is internally provided with a valve body 3.
In the present embodiment, the lower end of the flow-through outer cylinder 4 is screwed to the upper end of the outer cylinder 8.
The packer has a safe and reliable integral structure, adopts the spring, can forcedly unseal the packer, ensures that a rubber sleeve component on the packer can be completely contracted during unsealing, reduces engineering accidents, and can prevent the packer from being set midway due to pressure excitation in the process of going down a well, thereby ensuring that the packer can quickly and accurately reach a preset depth and ensuring the engineering progress.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (5)
1. A packer for increasing production and fracturing of petroleum, natural gas and coal bed gas is characterized in that: comprises a packer main body, the packer main body consists of an upper mandrel (2) and a lower mandrel (10) which are arranged from top to bottom, wherein the upper mandrel (2) and the lower mandrel (10) share the central axis, an annular filter screen (6) is arranged between the upper mandrel (2) and the lower mandrel (10), the upper end of the upper mandrel (2) is connected with an upper joint (1), the lower end of the lower mandrel (10) is connected with a lower joint (11), the packer main body is sequentially provided with a rubber cylinder component (12), a circulating outer cylinder (4) and a spring (9) from top to bottom, the upper end and the lower end of the rubber cylinder component (12) are respectively connected with the lower end of the upper joint (1) and the upper end of the circulating outer cylinder (4), the spring (9) is arranged outside the lower mandrel (10), the upper end and the lower end of the spring are respectively provided with a retaining ring (7), wherein the retaining ring (7) positioned above is abutted against steps arranged outside the upper end of the lower mandrel, an outer cylinder (8) is sleeved outside the spring (9), wherein the right end of an inner cavity of the outer cylinder (8) is abutted against a baffle ring (7) positioned below.
2. The packer for petroleum, natural gas and coal bed gas stimulation fracturing of claim 1, wherein: the lower end of the upper mandrel (2) is in threaded connection with the upper end of the lower mandrel (10).
3. The packer for petroleum, natural gas and coal bed gas stimulation fracturing of claim 1, wherein: and a sealing sleeve (5) is also arranged in the circulation outer cylinder (4).
4. The packer for petroleum, natural gas and coal bed gas stimulation fracturing of claim 3, wherein: and a valve body (3) is arranged in the upper section of the sealing sleeve (5).
5. The packer for petroleum, natural gas and coal bed gas stimulation fracturing of claim 1, wherein: the lower end of the circulation outer cylinder (4) is in threaded connection with the upper end of the outer cylinder (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110149472.3A CN112901108A (en) | 2021-02-03 | 2021-02-03 | Packer for increasing production and fracturing of petroleum, natural gas and coal bed gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110149472.3A CN112901108A (en) | 2021-02-03 | 2021-02-03 | Packer for increasing production and fracturing of petroleum, natural gas and coal bed gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112901108A true CN112901108A (en) | 2021-06-04 |
Family
ID=76121824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110149472.3A Pending CN112901108A (en) | 2021-02-03 | 2021-02-03 | Packer for increasing production and fracturing of petroleum, natural gas and coal bed gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112901108A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3645334A (en) * | 1970-04-07 | 1972-02-29 | Schlumberger Technology Corp | Well packer apparatus |
| US4403660A (en) * | 1980-08-08 | 1983-09-13 | Mgc Oil Tools, Inc. | Well packer and method of use thereof |
| CN2506766Y (en) * | 2001-08-14 | 2002-08-21 | 姜树文 | Valve controlled packer |
| US6467540B1 (en) * | 2000-06-21 | 2002-10-22 | Baker Hughes Incorporated | Combined sealing and gripping unit for retrievable packers |
| CN201321837Y (en) * | 2008-12-15 | 2009-10-07 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Hydraulic autonomous packer |
| CN201412110Y (en) * | 2009-06-05 | 2010-02-24 | 中国石油天然气股份有限公司 | Forced self-unsealing fracturing packer |
| CN204002682U (en) * | 2014-07-08 | 2014-12-10 | 大庆红祥寓科技有限公司 | Layering packer used for chemical water plugging of oil well |
| CN206053900U (en) * | 2016-08-25 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of hydraulic control self solves sealed packer |
| CN209145556U (en) * | 2018-11-28 | 2019-07-23 | 齐齐哈尔亚盛机械制造有限公司 | Expanding sand control packer |
| CN211851765U (en) * | 2019-12-31 | 2020-11-03 | 中国石油天然气股份有限公司 | Tension packer |
-
2021
- 2021-02-03 CN CN202110149472.3A patent/CN112901108A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3645334A (en) * | 1970-04-07 | 1972-02-29 | Schlumberger Technology Corp | Well packer apparatus |
| US4403660A (en) * | 1980-08-08 | 1983-09-13 | Mgc Oil Tools, Inc. | Well packer and method of use thereof |
| US6467540B1 (en) * | 2000-06-21 | 2002-10-22 | Baker Hughes Incorporated | Combined sealing and gripping unit for retrievable packers |
| CN2506766Y (en) * | 2001-08-14 | 2002-08-21 | 姜树文 | Valve controlled packer |
| CN201321837Y (en) * | 2008-12-15 | 2009-10-07 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Hydraulic autonomous packer |
| CN201412110Y (en) * | 2009-06-05 | 2010-02-24 | 中国石油天然气股份有限公司 | Forced self-unsealing fracturing packer |
| CN204002682U (en) * | 2014-07-08 | 2014-12-10 | 大庆红祥寓科技有限公司 | Layering packer used for chemical water plugging of oil well |
| CN206053900U (en) * | 2016-08-25 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of hydraulic control self solves sealed packer |
| CN209145556U (en) * | 2018-11-28 | 2019-07-23 | 齐齐哈尔亚盛机械制造有限公司 | Expanding sand control packer |
| CN211851765U (en) * | 2019-12-31 | 2020-11-03 | 中国石油天然气股份有限公司 | Tension packer |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210604 |
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| RJ01 | Rejection of invention patent application after publication |