CN102094591A - Fracturing packer for barefoot well - Google Patents
Fracturing packer for barefoot well Download PDFInfo
- Publication number
- CN102094591A CN102094591A CN2011100722150A CN201110072215A CN102094591A CN 102094591 A CN102094591 A CN 102094591A CN 2011100722150 A CN2011100722150 A CN 2011100722150A CN 201110072215 A CN201110072215 A CN 201110072215A CN 102094591 A CN102094591 A CN 102094591A
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- China
- Prior art keywords
- rubber cylinder
- packing element
- way
- sheath
- pressure limiting
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- 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.)
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Abstract
The invention relates to a fracturing packer for a barefoot well, comprising an upper connector, an upper rubber cylinder sheath, an inner pipe, a rubber cylinder, a lower rubber cylinder sheath, a one-way pressure limiting valve body, a one-way valve, a pressure limiting valve and a lower connecter, wherein the rubber cylinder is sleeved outside the inner pipe, the upper connector, the inner pipe, the one-way pressure limiting valve body and the lower connector are sequentially connected, the lower part of the upper rubber cylinder sheath covers the upper part of the rubber cylinder, the upper part of the upper rubber cylinder sheath is sleeved outside the upper connector, the upper part of the lower rubber cylinder sheath covers the lower part of the rubber cylinder, the lower part of the lower rubber cylinder sheath is sleeved outside the one-way pressure limiting valve body, the one-way pressure limiting valve body is provided with a vertical hole channel and a radial communicated hole, the vertical hole channel and the radial communicated hole are communicated, the one-way valve is installed on the vertical hole channel, and the pressure limiting valve is installed under the vertical hole channel. Duo to the pressure limiting valve, overpressure of the rubber cylinder is prevented, long-term effective working of the rubber cylinder is ensured, thereby the invention is suitable for fracturing operation of the barefoot well in an oil field; and the rubber cylinder is permanently kept in an expansion status by designing the one-way valve, therefore, the invention is suitable for the requirements for permanently plugging the bottom of the barefoot well in the oil field.
Description
Technical field
The present invention is the equipment that the oil field open hole well is used at the bottom of with plugged well, is a kind of open hole well pressure break packer.
Background technology
The inflatable packer that oil-field flooding is used is that packing element expands outwardly when the packing element internal pressure is higher than the packing element external pressure, realization sealing oil casing annular space.Will deblocking when present inflatable packer does not have pressure in inside, be not suitable at the bottom of the permanent plugged well of oil field open hole well, the inflatable packer that has is provided with unidirectional mechanism in inside, deblocking not in the time of can guaranteeing not have pressure reduction within a certain period of time, but keep the not limited time of deblocking, be not suitable for the requirement at the bottom of the permanent plugged well of oil field open hole well yet, it does not have pressure limiting mechanism yet, cause the packing element superpressure to damage easily, do not reach the requirement at the bottom of the plugged well.
Summary of the invention
The purpose of this invention is to provide a kind of open hole well pressure break packer, be applicable to oil field open hole well fracturing work, and at the bottom of the permanent plugged well of energy.
The object of the present invention is achieved like this: comprise top connection, last packing element sheath, interior pipe, packing element, last packing element sheath, the one-way pressure-limit valve body, one way valve, pressure limiting valve, lower contact, packing element is sleeved on outside the interior pipe, top connection, interior pipe, the one-way pressure-limit valve body, lower contact connects successively, last packing element sheath bottom covers packing element top, last packing element sheath top is sleeved on outside the top connection, lower rubber cylinder sheath top covers the packing element bottom, it is external that lower rubber cylinder sheath bottom is sleeved on one-way pressure-limit valve, vertical duct is arranged on the one-way pressure-limit valve body, radially linked hole is arranged on the one-way pressure-limit valve body, vertical duct communicates with linked hole radially, on the vertical duct one way valve is installed, under the vertical duct pressure limiting valve is installed, the step plunger shaft is arranged in the pressure limiting valve.
Between top connection, the last packing element sheath position-limitting pin is installed.
The invention has the beneficial effects as follows: designed pressure limiting valve, packing element can superpressure, can guarantee the permanently effective work of packing element, be applicable to oil field open hole well fracturing work, designed one way valve, make packing element forever be in expansion state, therefore, the present invention is applicable to the requirement at the bottom of the permanent plugged well of oil field open hole well.
Description of drawings
Fig. 1 is a structure assembling drawing of the present invention.
The specific embodiment
Below in conjunction with Fig. 1 embodiments of the invention are described.
As shown in the figure, embodiments of the invention comprise top connection 1, last packing element sheath 3, interior pipe 4, packing element 5, last packing element sheath 6, one-way pressure-limit valve body 7, one way valve 8, pressure limiting valve 11, lower contact 12, manage outside 4 in packing element 5 is sleeved on, top connection 1, interior pipe 4, one-way pressure-limit valve body 7, lower contact 12 connects successively, last packing element sheath 3 bottoms cover packing element 5 tops, last packing element sheath 3 tops are sleeved on outside the top connection 1, lower rubber cylinder sheath 6 tops cover packing element 5 bottoms, lower rubber cylinder sheath 6 bottoms are sleeved on outside the one-way pressure-limit valve body 7, vertical duct 9 is arranged on the one-way pressure-limit valve body 7, radially linked hole 10 is arranged on the one-way pressure-limit valve body 7, vertical duct 9 communicates with linked hole 10 radially, on the vertical duct 9 one way valve 8 is installed, liquid can only flow in the packing element 5 from vertical duct 9, can not flow out in packing element 5.Under the vertical duct 9 pressure limiting valve 11 is installed, pressure limiting valve 11 cut out linked hole 10 when pressure reached setting, and step plunger shaft 13 is arranged in the pressure limiting valve 11.Top connection 1, go up position-limitting pin 2 is installed between the packing element sheath 3, when last packing element sheath 3 axial floats, position-limitting pin 2 is spacing at shoulder place, top connection 1 bottom.
Linked hole 10 on the one-way pressure-limit valve body 7 can with step plunger shaft 13 UNICOMs in the pressure limiting valve 11.
The present invention is down behind open hole well packing position, inwardly water filling, inject water earlier from interior pipe 4 through radially linked hole 10, vertical duct 9 are backed down one way valve 8 and entered in the packing element 5, the shaft bottom of packing element 5 expansion sealing barefoot completions, one way valve 8 can not leak the hydraulic pressure that enters in the packing element 5, packing element 5 keeps expansion state, make the shaft bottom of the permanent shutoff barefoot completion of packing element, after pressure is raised to rated pressure, pressure limiting valve 11 moves up under the area difference effect of step piston, and seal radially linked hole 10, and hydraulic pressure can not be entered in the packing element 5, packing element 5 can not bear hyperpressure.
Claims (2)
1. open hole well pressure break packer, comprise top connection (1), last packing element sheath (3), interior pipe (4), packing element (5), last packing element sheath (6), one-way pressure-limit valve body (7), one way valve (8), pressure limiting valve (11), lower contact (12), it is characterized in that: packing element (5) is sleeved on outside the interior pipe (4), top connection (1), interior pipe (4), one-way pressure-limit valve body (7), lower contact (12) connects successively, last packing element sheath (3) bottom covers packing element (5) top, last packing element sheath (3) top is sleeved on outside the top connection (1), lower rubber cylinder sheath (6) top covers packing element (5) bottom, lower rubber cylinder sheath (6) bottom is sleeved on outside the one-way pressure-limit valve body (7), vertical duct (9) is arranged on the one-way pressure-limit valve body (7), radially linked hole (10) is arranged on the one-way pressure-limit valve body (7), vertical duct (9) communicates with linked hole (10) radially, on the vertical duct (9) one way valve (8) is installed, under the vertical duct (9) pressure limiting valve (11) is installed, step plunger shaft 13 is arranged in the pressure limiting valve 11.
2. open hole well pressure break packer according to claim 1 is characterized in that: between top connection (1), the last packing element sheath (3) position-limitting pin (2) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100722150A CN102094591A (en) | 2011-03-15 | 2011-03-15 | Fracturing packer for barefoot well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100722150A CN102094591A (en) | 2011-03-15 | 2011-03-15 | Fracturing packer for barefoot well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102094591A true CN102094591A (en) | 2011-06-15 |
Family
ID=44127839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100722150A Pending CN102094591A (en) | 2011-03-15 | 2011-03-15 | Fracturing packer for barefoot well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102094591A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639965A (en) * | 2016-12-02 | 2017-05-10 | 中国石油天然气股份有限公司 | Close and expansion type self-unsealing packer |
| CN107762441A (en) * | 2017-11-03 | 2018-03-06 | 西南石油大学 | A kind of inflatable packer |
| CN107829705A (en) * | 2017-11-03 | 2018-03-23 | 西南石油大学 | A kind of inflatable packer component and packer |
| CN109339734A (en) * | 2018-10-23 | 2019-02-15 | 天津泊荣石油科技发展有限公司 | A kind of packer for annular space pipeline |
| WO2022093277A1 (en) * | 2020-10-27 | 2022-05-05 | Halliburton Energy Services, Inc. | Well sealing tool with controlled-volume gland opening |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1226518A (en) * | 1984-04-16 | 1987-09-08 | Robert E. Snyder | Inflatable packer |
| CN1896454A (en) * | 2006-05-25 | 2007-01-17 | 东营市祥生工贸有限责任公司 | Packer |
| RU2347062C1 (en) * | 2007-10-16 | 2009-02-20 | Общество с ограниченной ответственностью "Лифт Ойл" | Packer |
| CN101906949A (en) * | 2010-08-23 | 2010-12-08 | 中国石油集团西部钻探工程有限公司 | Underbalanced well completion tool |
| CN101915070A (en) * | 2010-08-23 | 2010-12-15 | 东营市兆鑫工贸有限责任公司 | Expanding open hole packer |
| CN202031527U (en) * | 2011-03-15 | 2011-11-09 | 东营市兆鑫工贸有限责任公司 | Pressing crack packer of barefoot well |
-
2011
- 2011-03-15 CN CN2011100722150A patent/CN102094591A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1226518A (en) * | 1984-04-16 | 1987-09-08 | Robert E. Snyder | Inflatable packer |
| CN1896454A (en) * | 2006-05-25 | 2007-01-17 | 东营市祥生工贸有限责任公司 | Packer |
| RU2347062C1 (en) * | 2007-10-16 | 2009-02-20 | Общество с ограниченной ответственностью "Лифт Ойл" | Packer |
| CN101906949A (en) * | 2010-08-23 | 2010-12-08 | 中国石油集团西部钻探工程有限公司 | Underbalanced well completion tool |
| CN101915070A (en) * | 2010-08-23 | 2010-12-15 | 东营市兆鑫工贸有限责任公司 | Expanding open hole packer |
| CN202031527U (en) * | 2011-03-15 | 2011-11-09 | 东营市兆鑫工贸有限责任公司 | Pressing crack packer of barefoot well |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639965A (en) * | 2016-12-02 | 2017-05-10 | 中国石油天然气股份有限公司 | Close and expansion type self-unsealing packer |
| CN106639965B (en) * | 2016-12-02 | 2019-04-09 | 中国石油天然气股份有限公司 | A kind of enclosed expanding self solves sealed packer |
| CN107762441A (en) * | 2017-11-03 | 2018-03-06 | 西南石油大学 | A kind of inflatable packer |
| CN107829705A (en) * | 2017-11-03 | 2018-03-23 | 西南石油大学 | A kind of inflatable packer component and packer |
| CN107829705B (en) * | 2017-11-03 | 2021-01-22 | 西南石油大学 | Expanding packer assembly and packer |
| CN109339734A (en) * | 2018-10-23 | 2019-02-15 | 天津泊荣石油科技发展有限公司 | A kind of packer for annular space pipeline |
| CN109339734B (en) * | 2018-10-23 | 2023-08-18 | 天津泊荣石油科技发展有限公司 | Packer for annular pipeline |
| WO2022093277A1 (en) * | 2020-10-27 | 2022-05-05 | Halliburton Energy Services, Inc. | Well sealing tool with controlled-volume gland opening |
| GB2612505A (en) * | 2020-10-27 | 2023-05-03 | Halliburton Energy Services Inc | Well sealing tool with controlled-volume gland opening |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110615 |