CN104929560A - Sand-prevention blanking plug - Google Patents
Sand-prevention blanking plug Download PDFInfo
- Publication number
- CN104929560A CN104929560A CN201510328804.9A CN201510328804A CN104929560A CN 104929560 A CN104929560 A CN 104929560A CN 201510328804 A CN201510328804 A CN 201510328804A CN 104929560 A CN104929560 A CN 104929560A
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- CN
- China
- Prior art keywords
- plug
- sand
- blanking plug
- shear pin
- plugging device
- 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.)
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Abstract
A sand-prevention blanking plug comprises a body (1), wherein a narrow gap (7) is formed in the middle of the body (1), the lower end of the body (1) is in threaded connection with a guide head (3), the upper end of the body (1) is provided with an inner threaded connector (6), a plug (2) is sealed and assembled in the body (1) and is located above the narrow gap (7), and the plug (2) is fixed to the body (1) through a shear pin (4) arranged radially. The sand-prevention blanking plug can seal bottom hole pressure when a speed tubular column descends and can effectively relieve yield reduction caused by sand blockage during normal gas production.
Description
Technical field
The invention belongs to speed tubing string production gas technology field, be specifically related to a kind of sand control plugging device.
Background technology
Due to reasons such as gas reservoir pressure drop, the immersion of shaft bottom water, gas flow rate reduction, shaft bottom hydrops and Liquid output increases, in exploitation gas reservoir process, most gas well all constantly can decline along with the output of carrying out of producing, so that finally stops production.At present, domestic main employing speed tubing string drainage gas recovery improves shaft bottom situation, promotes gas well steadily to produce and recovers blowing production.The corollary equipment of conventional speed tubing string drainage gas recovery comprises: operation window, continuous-tube well mouth hanger, continuous-tube blanking plug, slips fixator etc.But easily there is sand plug in the speed tubing string continuous-tube duration of work of routine, causes gas production obviously to decline.
Summary of the invention
The invention solves the deficiencies in the prior art, provide a kind of sand control plugging device, under achieving speed tubing string, fashionable energy plugged well bottom pressure, effectively can alleviate the production declining that sand plug causes during normal gas production.
The technical solution adopted in the present invention is: a kind of sand control plugging device, comprise body, the middle part of described body has finedraw, the lower end of described body has been threaded guide head, upper end has a female screw connection, is equipped with plug by sealing in described body, and makes plug be positioned at the top of finedraw, and plug is fixed by the shear pin of radial setting and body.
Described plug is sealed by O RunddichtringO and inner body wall, and O RunddichtringO is positioned at the top of shear pin.Described female screw connection is trapezoidal internal thread connector.
The advantage that the present invention compared with prior art has and effect:
1, under achieving speed tubing string, fashionable energy plugged well bottom pressure, facilitates continuous-tube to be with tool string G.I.H.
2, sand grains in filter well during normal gas production, effectively can alleviate the production declining that sand plug causes.
3, guide head can reduce the resistance that instrument seals in well greatly.
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing 1 and detailed description of the invention, the present invention is described in detail.
A kind of sand control plugging device, comprise body 1, the middle part of described body 1 has finedraw 7, the lower end of described body 1 has been threaded guide head 3, upper end has a female screw connection 6, be equipped with plug 2 by sealing in described body 1, and make plug 2 be positioned at the top of finedraw 7, and plug 2 is fixed with body 1 by the radial shear pin 4 arranged.
Described plug 2 is by O RunddichtringO 5 and body 1 inner wall sealing, and O RunddichtringO 5 is positioned at the top of shear pin 4.Described female screw connection 6 is trapezoidal internal thread connector.
During use, connected with the coiled tubing pilot operated valve device of speed tubing string lower end by the female screw connection 6 of upper end of the present invention, can shutoff speed tubing string well internal gas pressure when going into the well, be convenient to continuous-tube and be with tool string G.I.H.During gas production operation, pump into nitrogen or fluid by well head in continuous-tube, pressurization makes nitrogen or fluid enter in body 1; shear pin 4 is cut off; tubing string can resume production, and the grains of sand produced in gas recovery can be filtered outside body 1, and not shutoff gas production passage.
Above-described embodiment, just preferred embodiment of the present invention, is not used for limiting practical range of the present invention, therefore all equivalent variations done with content described in the claims in the present invention, all should be included within the claims in the present invention scope.
Claims (3)
1. sand control plugging device, comprise body (1), the middle part of described body (1) has finedraw (7), it is characterized in that: the lower end of described body (1) has been threaded guide head (3), upper end has a female screw connection (6), plug (2) is equipped with by sealing in described body (1), and make plug (2) be positioned at the top of finedraw (7), and plug (2) is fixed with body (1) by the radial shear pin (4) arranged.
2. sand control plugging device according to claim 1, it is characterized in that: described plug (2) is by O RunddichtringO (5) and body (1) inner wall sealing, and O RunddichtringO (5) is positioned at the top of shear pin (4).
3. sand control plugging device according to claim 1 and 2, is characterized in that: described female screw connection (6) is trapezoidal internal thread connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510328804.9A CN104929560A (en) | 2015-06-15 | 2015-06-15 | Sand-prevention blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510328804.9A CN104929560A (en) | 2015-06-15 | 2015-06-15 | Sand-prevention blanking plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104929560A true CN104929560A (en) | 2015-09-23 |
Family
ID=54116953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510328804.9A Pending CN104929560A (en) | 2015-06-15 | 2015-06-15 | Sand-prevention blanking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104929560A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677735A (en) * | 2016-11-23 | 2017-05-17 | 中国石油天然气股份有限公司 | Blocking device for drainage gas recovery of horizontal well velocity string |
| CN109267972A (en) * | 2018-10-30 | 2019-01-25 | 中国石油天然气股份有限公司 | A kind of speed column two-stage plugging device and application method |
| CN109296336A (en) * | 2018-09-20 | 2019-02-01 | 中国石油天然气股份有限公司 | A kind of speed column sleeve type blocking device and method |
| CN109403908A (en) * | 2018-11-06 | 2019-03-01 | 中国石油天然气股份有限公司 | A kind of speed column sand control formula calker and application method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2290690Y (en) * | 1997-04-01 | 1998-09-09 | 牡丹江市石油工具配套厂 | Oil well dirt-proof choke appts. |
| US6062307A (en) * | 1997-10-24 | 2000-05-16 | Halliburton Energy Services, Inc. | Screen assemblies and methods of securing screens |
| CN201588620U (en) * | 2010-02-09 | 2010-09-22 | 汤志忠 | Eccentric water distributor without throwing and dragging |
| CN103206187A (en) * | 2013-04-22 | 2013-07-17 | 中国海洋石油总公司 | Blanking plug for sand prevention |
| CN203285375U (en) * | 2013-05-27 | 2013-11-13 | 中国石油化工股份有限公司 | Blocking gauge cutter |
| CN203603835U (en) * | 2013-12-09 | 2014-05-21 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Underground dart-type blocking tool used for coiled tubing |
| CN204984338U (en) * | 2015-06-15 | 2016-01-20 | 宝鸡市赛孚石油机械有限公司 | Sand control blanking plug |
-
2015
- 2015-06-15 CN CN201510328804.9A patent/CN104929560A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2290690Y (en) * | 1997-04-01 | 1998-09-09 | 牡丹江市石油工具配套厂 | Oil well dirt-proof choke appts. |
| US6062307A (en) * | 1997-10-24 | 2000-05-16 | Halliburton Energy Services, Inc. | Screen assemblies and methods of securing screens |
| CN201588620U (en) * | 2010-02-09 | 2010-09-22 | 汤志忠 | Eccentric water distributor without throwing and dragging |
| CN103206187A (en) * | 2013-04-22 | 2013-07-17 | 中国海洋石油总公司 | Blanking plug for sand prevention |
| CN203285375U (en) * | 2013-05-27 | 2013-11-13 | 中国石油化工股份有限公司 | Blocking gauge cutter |
| CN203603835U (en) * | 2013-12-09 | 2014-05-21 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Underground dart-type blocking tool used for coiled tubing |
| CN204984338U (en) * | 2015-06-15 | 2016-01-20 | 宝鸡市赛孚石油机械有限公司 | Sand control blanking plug |
Non-Patent Citations (1)
| Title |
|---|
| 周长江: "《油田生产安全技术》", 30 May 2003 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677735A (en) * | 2016-11-23 | 2017-05-17 | 中国石油天然气股份有限公司 | Blocking device for drainage gas recovery of horizontal well velocity string |
| CN109296336A (en) * | 2018-09-20 | 2019-02-01 | 中国石油天然气股份有限公司 | A kind of speed column sleeve type blocking device and method |
| CN109267972A (en) * | 2018-10-30 | 2019-01-25 | 中国石油天然气股份有限公司 | A kind of speed column two-stage plugging device and application method |
| CN109403908A (en) * | 2018-11-06 | 2019-03-01 | 中国石油天然气股份有限公司 | A kind of speed column sand control formula calker and application method |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150923 |
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| RJ01 | Rejection of invention patent application after publication |