CN201433735Y - Packer special for plugging water - Google Patents
Packer special for plugging water Download PDFInfo
- Publication number
- CN201433735Y CN201433735Y CN2009201492173U CN200920149217U CN201433735Y CN 201433735 Y CN201433735 Y CN 201433735Y CN 2009201492173 U CN2009201492173 U CN 2009201492173U CN 200920149217 U CN200920149217 U CN 200920149217U CN 201433735 Y CN201433735 Y CN 201433735Y
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- CN
- China
- Prior art keywords
- packer
- central tube
- combination valve
- single current
- piston
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a packer special for plugging water (Figure 1), comprising an upper adaptor 1, a lower adaptor 2, an upper setting piston 3, a lower setting piston 4, a rubber cylinder 5, an inner central pipe 6, an outer central pipe 7, an upper one-way combination valve 10, a lower one-way combination valve 11 and a spacing ring 12. The packer is first compressed to realize primary setting in a pipe column, and a secondary setting piston can be started to compress the rubber cylinder again when the shaft annular pressure is higher than the setting pressure of the packer, thereby increasing the sealing property of the rubber cylinder. Furthermore, a mechanical locking mechanism of a common packer is replaced by a piston one-way input sealed locking mechanism, thereby eliminating unblocking mechanisms, simplifying the structure, and increasing the reliability of tools, and the rubber cylinder can be tore up by great force when to unblock. The packer special for plugging water is characterized by symmetrical design and simple structure, and the sealing property is increased with the pressure. The packer special for plugging water is adapts to block oil and water wells inoil fields, in particular to double-blocking water plugging operation.
Description
Affiliated technical field:
The utility model relates to the packer that use in a kind of oil field, belongs to the oil field downhole tool, is applicable to oilfield oil well card envelope, is used in particular for two envelope card water-blocking operations, alternative subsidy pipe plug water.Also can be used as the packing element anchor tool of protective casing.
Background technology:
The used compression packer in oil field mainly is to suppress to promote piston compression packing element and set and have locking mechanism, and its sealing is decided by to set the size of pressure.Its shortcoming is that the initial pressure that sets has determined that the decrement of packing element is the seal degree of packing element, adopt its water blockoff wellbore annulus pressure during greater than packer central tube pressure locking mechanism can lose efficacy, the seal degree that has surpassed packing element when perhaps wellbore annulus pressure is greater than packer setting pressure causes packer to lose efficacy.
Summary of the invention:
The purpose of this utility model provides the special-purpose packer of a kind of water blockoff, is applicable to the oilfield oil well water blockoff, is used in particular for two envelope card water-blocking operations.The special-purpose packer of water blockoff (as Fig. 1) is basic symmetrical structure design, it by top connection 1, lower contact 2, on set piston 3, down set piston 4, packing element 5, inner central tube 6, exterior central tube 7, go up single current combination valve 10, single current combination valve 11, spacer ring 12 are formed down, screwed connection is from top to bottom used in top connection 1, last single current combination valve 10, inner central tube 6, following single current combination valve 11, lower contact 2 successively, exterior central tube 7 is enclosed within on the inner central tube 6, on set piston 3, packing element 5, set piston 4 down and from top to bottom be enclosed within successively on the exterior central tube 7.Single current combination valve (as Fig. 2) structure is that the ball-and-seat that two symmetries are installed combines, and ball-and-seat is made up of ball seat 15, ball 14, spring 16, shoulder hole 18, and design has filter bores 17 on the ball seat.Suppress in the tubing string when setting, liquid flows by interior pressure transmission hole 9, single current combination valve, shoulder hole 18, interior exterior central tube combinations of gaps become the elementary fluid course that sets up and down, pressure transmission is to setting piston up and down, promotion sets piston compression packing element 5, when inner central tube 6 releases, the single current unit valve actuation keeps the piston internal pressure, and locked packing element decrement realizes that the elementary of packer sets; When packer external pressure during greater than interior pressure, flow through outer pressure transmission hole 8, single current combination valve, inner central tube 6 of liquid sets fluid course with the synthetic secondary of the dwell set of exterior central tube 7, and pressure transmission promotes piston compression packing element 5 to setting piston up and down, realizes that secondary sets.Just continue the compression packing element greater than piston internal pressure piston when interior pressure, external pressure in a word, otherwise keep the piston internal pressure with regard to the single current unit valve actuation, locked packing element decrement is guaranteed the packing element sealing.
Special-purpose packer of water blockoff of the present utility model and Y341 are common, and the packer difference is: the common packer of Y341 for once tubing string is suppressed the process of setting, packing element sealability in its use is constant, and the special-purpose packer of water blockoff realizes that by suppressing in the tubing string the elementary of packer sets earlier, set piston and compress packing element once more when wellbore annulus pressure can start secondary during greater than packer setting pressure, improve the packing element sealing.In addition, the mechanical locking mechanism of common packer is become the unidirectional influent stream sealing of piston locking mechanism, remove the understanding sealing mechanism, simplify the structure, improved the reliability of instrument, movable energetically up and down drilling tool is torn the packing element deblocking to shreds when needing deblocking.The characteristics of the special-purpose packer of water blockoff are basic symmetric design, and simple in structure, sealing raises with pressure.
Description of drawings:
Fig. 1: novel packer construction schematic diagram
1, top connection 2, lower contact 3, on set piston 4, down set piston 5, packing element 6, inner central tube 7, exterior central tube 8, outer pressure transmission hole 9, interior pressure transmission hole 10, go up single current combination valve 11, single current combination valve 12, spacer ring 13, sealing ring down
Fig. 2: single current combination valve structural representation
14, ball 15, ball seat 16, spring 17, filter bores 18, shoulder hole 19, screw thread
The specific embodiment:
Before going into the well, two packers are serially connected in the running string by top connection 1, lower contact 2, make packer be placed on the two ends of shutoff target zone respectively, tubing string bottom band ball-and-seat, the packer upper end has releasing tool, the tubing string inner chamber is suppressed, first set packer, and operation releasing tool realization tubing string is given up.Along with the oil well production time lengthening, the tubing string internal pressure reduces, and plugged zone pressure raises, and when plugged zone pressure was higher than the tubing string internal pressure, the beginning secondary set, and realizes improving the effect of sealing.
Claims (3)
1, the special-purpose packer of a kind of water blockoff is by top connection (1), lower contact (2), on set piston (3), under set piston (4), packing element (5), inner central tube (6), exterior central tube (7), last single current combination valve (10), following single current combination valve (11), spacer ring (12) is formed, it is characterized in that: top connection (1), last single current combination valve (10), inner central tube (6), following single current combination valve (11), screwed connection is from top to bottom used in lower contact (2) successively, exterior central tube (7) is enclosed within on the inner central tube (6), on set piston (3), packing element (5), under set piston (4) and from top to bottom be enclosed within successively on the exterior central tube (7).
2, the special-purpose packer of water blockoff according to claim 1 is characterized in that: single current combination valve structure is that the ball-and-seat that two symmetries are installed combines, ball-and-seat is made up of ball seat (15), ball (14), spring (16), shoulder hole (18), and design has filter bores (17) on the ball seat.
3, the special-purpose packer of water blockoff according to claim 1 is characterized in that: interior pressure transmission hole (9), single current combination valve, shoulder hole (18), interior exterior central tube combinations of gaps become the elementary fluid course that sets up and down, and pressure transmission hole (8), single current combination valve, inner central tube (6) set fluid course with the synthetic secondary of the dwell set of exterior central tube (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201492173U CN201433735Y (en) | 2009-04-10 | 2009-04-10 | Packer special for plugging water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201492173U CN201433735Y (en) | 2009-04-10 | 2009-04-10 | Packer special for plugging water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201433735Y true CN201433735Y (en) | 2010-03-31 |
Family
ID=42052545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201492173U Expired - Fee Related CN201433735Y (en) | 2009-04-10 | 2009-04-10 | Packer special for plugging water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201433735Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953706A (en) * | 2012-12-10 | 2013-03-06 | 河北工业大学 | Washable well packer for realizing underground secondary setting |
| CN103244082A (en) * | 2013-04-10 | 2013-08-14 | 中国石油天然气集团公司 | Flexible first-time sand control sandblasting technique pipe |
| CN106437605A (en) * | 2016-09-06 | 2017-02-22 | 中国石油化工股份有限公司 | Packer |
| CN109057745A (en) * | 2018-07-10 | 2018-12-21 | 苏州征之魂专利技术服务有限公司 | A kind of structure of Packer for blocking water and combinations thereof installation method |
| CN113294119A (en) * | 2020-02-21 | 2021-08-24 | 中国石油天然气股份有限公司 | Packer and well completion structure |
-
2009
- 2009-04-10 CN CN2009201492173U patent/CN201433735Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953706A (en) * | 2012-12-10 | 2013-03-06 | 河北工业大学 | Washable well packer for realizing underground secondary setting |
| CN102953706B (en) * | 2012-12-10 | 2015-04-08 | 河北工业大学 | Washable well packer for realizing underground secondary setting |
| CN103244082A (en) * | 2013-04-10 | 2013-08-14 | 中国石油天然气集团公司 | Flexible first-time sand control sandblasting technique pipe |
| CN106437605A (en) * | 2016-09-06 | 2017-02-22 | 中国石油化工股份有限公司 | Packer |
| CN106437605B (en) * | 2016-09-06 | 2018-12-14 | 中国石油化工股份有限公司 | A kind of packer |
| CN109751009A (en) * | 2016-09-06 | 2019-05-14 | 中国石油化工股份有限公司 | One kind can hot-washing wax remover packer repeatedly |
| CN109751011A (en) * | 2016-09-06 | 2019-05-14 | 中国石油化工股份有限公司 | A kind of hot-washing wax remover packer |
| CN109751009B (en) * | 2016-09-06 | 2021-02-12 | 中国石油化工股份有限公司 | Repeated hot-washing paraffin removal packer |
| CN109057745A (en) * | 2018-07-10 | 2018-12-21 | 苏州征之魂专利技术服务有限公司 | A kind of structure of Packer for blocking water and combinations thereof installation method |
| CN113294119A (en) * | 2020-02-21 | 2021-08-24 | 中国石油天然气股份有限公司 | Packer and well completion structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100331 Termination date: 20170410 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |