CN103206187B - Sand control blanking plug - Google Patents
Sand control blanking plug Download PDFInfo
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- CN103206187B CN103206187B CN201310140449.3A CN201310140449A CN103206187B CN 103206187 B CN103206187 B CN 103206187B CN 201310140449 A CN201310140449 A CN 201310140449A CN 103206187 B CN103206187 B CN 103206187B
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- blanking plug
- sand control
- control blanking
- fishing rod
- sand
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Abstract
The present invention relates to a kind of sand control blanking plug, be characterised in that: comprise fishing rod, the upper spindle be threaded with fishing rod, the lower spindle be connected with upper spindle, be sleeved on the outside and connecting cylinder that is that fixed with upper spindle by shear pin of fishing rod; The upper spindle other end by securing member and lower spindle affixed, connecting cylinder outside is set with supporting positive cover and sliding sleeve successively from left to right, supporting positive cover internal thread connect elastic claw; Sliding sleeve is shaped with the pilot hole for installing projection, at pilot hole built with projection; Sliding sleeve outer cover assembly set, matching thread connects lower contact, on supporting, seal modules and stop collar is housed.Advantage is: reasonable in design, not only can realize being connected with existing packer is supporting, is directly used in sand control temporary plug; Occur after also can avoiding burying sand for a long time that sand card is hampered equivalent risk, and by the circulation canal on it and the convenient blanking plug reclaimed after Long-Time Service of pressure compensation opening, prevent shaft bottom to miss or the greater risk of deficit larger exceptional well section operation.
Description
Technical field
The invention belongs to oil, natural gas completion production technique field, particularly designing a kind of sand control blanking plug for packer and support formula production packer being converted to interim bridging plug.
Background technology
At present, in oil extraction in oil field completion industry, need to carry out well workover and play oil pipe, during for the sand control treatment of part neighbor distance compared with long oil interval, generally need to use blanking plug to convert the packer at adjacent monolayer gravel filling sand prevention tubing string top and support formula production packer to sand control bridging plug temporarily.In the similar sand control treatment of tradition packer upper strata carried out to the operations such as pressure testing, perforation, well-flushing when not using blanking plug, there will be following problem: packer bottom oil layer 1, can be polluted, make a big impact to bottom oil layer; 2, traditional blanking plug is due to the restriction of its structure, cannot be connected, can not be directly used in sand control temporary plug with existing packer is supporting; 3, the real work of sand control blanking plug is embedded in gravel often, and after using traditional blanking plug to exist to bury sand, sand card is hampered equivalent risk; 4, traditional blanking plug is without pressure balance mechanism, for shaft bottom leakage or the larger exceptional well section of deficit, may cause and cannot reclaim, bring greater risk to operation after Long-Time Service tradition blanking plug.
Summary of the invention
The present invention provides a kind of sand control blanking plug for solving in known technology the technical problem that exists.
This sand control can be used as converting packer and production packer to interim bridging plug with blanking plug, use this blanking plug can carry out when not affecting blanking plug lower area more than packer as operations such as pressure testing, perforation, well-flushings.Its reasonable in design, not only can realize being connected with existing packer is supporting, and be directly used in sand control temporary plug; But also after can avoiding burying sand for a long time, occur that sand card is hampered equivalent risk, and by the convenient blanking plug reclaimed after Long-Time Service of the pressure compensation opening in sliding sleeve, upper spindle and lower contact, prevent shaft bottom to miss or the greater risk of deficit larger exceptional well section operation.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is:
Sand control blanking plug, is comprised fishing rod, the upper spindle be threaded with fishing rod, the lower spindle be connected with upper spindle, is sleeved on the outside and connecting cylinder that is that fixed with upper spindle by shear pin of fishing rod; The described upper spindle other end by securing member and lower spindle affixed, described connecting cylinder outside is set with supporting positive cover and sliding sleeve successively from left to right, and described supporting positive cover internal thread connects elastic claw; Described sliding sleeve is shaped with the pilot hole for installing projection, at pilot hole built with projection; Sliding sleeve outer cover assembly set, described supporting internal thread connects lower contact, on supporting, seal modules and stop collar is housed.
The present invention can also adopt following technical scheme:
Described fishing rod top is provided with the conical section be convenient to running tool or connected fishing socket.
Described fishing rod inside is shaped with and can discharges top, low pressure and be convenient to the circulation canal of follow-up recycling operation.
Described fishing rod circumference is also shaped with for the cotter slot with fishing socket bayonet fittings.
Described connecting cylinder is outside connects suit supporting positive cover by key.
Described lower spindle is equipped with locating snap ring, and its effect is that to realize lower spindle up spacing, ensures the relative position of pressure compensation opening, prevents lower spindle from resetting.
Described elastic claw is shaped with and convenient be connected with packer releasing-joint and realize locking and the left-handed side of blocking function detains.
Described sliding sleeve, upper spindle and lower contact are all shaped with pressure compensation opening.
Adopt the method for operating of sand control blanking plug, comprise the steps:
Enter under blanking plug, test envelope and operation of slipping out of the hand:
First use special running tool that sand control blanking plug is sent to packer top, send into service aid after putting in place and press down 2-3t, left-handed side's button of sand control blanking plug elastic claw is made to insert left-handed side's button of packer releasing-joint, simultaneously the seal modules of sand control blanking plug enters packer central tube and cooperatively interacts, and realizes sealing; After scene judges that sand control blanking plug is lowered into position, suppress to 2000Psi × 15min by annular space, judge whether sand control blanking plug inserts completely and put in place; After involution lattice tested by sand control blanking plug, continue to press down and send into service aid to the feeding shear pin of fishing rod cotter slot and all shear, namely send into service aid and sand control blanking plug is slipped out of the hand smoothly.
Blanking plug is salvaged and is reclaimed operation: enter first down special fishing socket and carry out sand washing to sand control blanking plug top, sand washing is returned out totally, press down fishing socket and catch the fishing rod of sand control blanking plug to it, by on carry, transfer fishing socket and turn on pump loop test, judge whether fishing socket stings tight sand control blanking plug smoothly, as confirmed to firmly grasp, continuation is carried fishing socket to cut off to shear pin, upper spindle and lower spindle move, expose pressure compensation opening, sand control blanking plug two-way pressure is balanced, simultaneously, projection proposes contraction, the elastic claw of sand control blanking plug is shunk, then carry fishing socket on continuing slip out of the hand completely to sand control blanking plug and top packer and reclaim.
The advantage that the present invention has and good effect are: this sand control blanking plug can be used as converting packer and production packer to interim bridging plug, use this blanking plug can carry out when not affecting blanking plug lower area more than packer as operations such as pressure testing, perforation, well-flushings.Fishing rod top design has pyramidal structure, convenient with running tool or existing packer is supporting is connected, and be directly used in sand control temporary plug, occur after also can avoiding burying sand for a long time that sand card is hampered equivalent risk, and by the pressure compensation opening on the circulation canal of fishing rod inside and sliding sleeve, upper spindle and lower contact, can discharge upper and lower part pressure, be convenient to follow-up recycling operation, the blanking plug after convenient recovery Long-Time Service, prevents the greater risk of shaft bottom leakage or the operation of deficit larger exceptional well section.In addition, this sand control is high with blanking plug working seal pressure, under enter, seal and fishing more reliable, significantly improve field operation efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, fishing rod; 1-1, conical section; 1-2, circulation canal; 1-3, cotter slot; 2, connecting cylinder; 3, shear pin; 4, fixing pin; 5, key; 6, supporting positive cover; 7, elastic claw; 8, hex bolts; 9, sliding sleeve; 9-1, sliding sleeve pressure compensation opening; 10, upper spindle; 10-1, upper spindle pressure compensation opening; 11, projection; 12, supporting; 13, O RunddichtringO; 14, locating snap ring; 15, seal modules; 16, stop collar; 17, lower spindle; 18, lower contact; 18-1, lower contact pressure compensation opening.
Detailed description of the invention
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, sand control blanking plug, comprise fishing rod 1, the upper spindle 10 be threaded with fishing rod, the lower spindle 17 be connected with upper spindle and to be sleeved on fishing rod outside and by shear pin 3 connecting cylinder 2 fixing with upper spindle.The described upper spindle other end by securing member and lower spindle affixed, in the present embodiment, the described upper spindle other end is affixed by fixing pin 4 and lower spindle.Described connecting cylinder outside is set with supporting positive cover 6 and sliding sleeve 9 successively from left to right, and described supporting positive cover internal thread connects elastic claw 7; Described sliding sleeve is shaped with the pilot hole for installing projection 11, at pilot hole built with projection 11.Sliding sleeve outer cover assembly set 12, described matching thread connects lower contact 19, on supporting, seal modules 15 and stop collar 16 is housed.Described sliding sleeve and supporting between, be equipped with O RunddichtringO 13 between lower spindle and lower contact
In the present embodiment, described fishing rod top is provided with the conical section 1-1 be convenient to running tool or connected fishing socket, described fishing rod inside is shaped with and can discharges top, low pressure and be convenient to the circulation canal 1-2 of follow-up recycling operation, fishing rod circumference is also shaped with for the cotter slot 1-3 with fishing socket bayonet fittings.
In the present embodiment, supporting positive cover 6 is equipped with by key 5 adapter sleeve in described connecting cylinder outside.
In the present embodiment, described lower spindle is equipped with locating snap ring 14, its effect is that to realize lower spindle up spacing, ensures the relative position of pressure compensation opening, prevents lower spindle from resetting.Described elastic claw is shaped with and convenient be connected with packer releasing-joint and realize locking and the left-handed side of blocking function detains.
Described sliding sleeve is shaped with sliding sleeve pressure compensation opening 9-1, upper spindle is shaped with in upper spindle pressure compensation opening 10-1, described lower contact and is shaped with lower contact pressure compensation opening 18-1.
Adopt the method for operating of sand control blanking plug, comprise the steps:
Enter under blanking plug, test envelope and operation of slipping out of the hand:
First use special running tool that sand control blanking plug is sent to packer top, send into service aid after putting in place and press down 2-3t, left-handed side's button of sand control blanking plug elastic claw is made to insert left-handed side's button of packer releasing-joint, simultaneously the seal modules of sand control blanking plug enters packer central tube and cooperatively interacts, and realizes sealing; After scene judges that sand control blanking plug is lowered into position, suppress to 2000Psi × 15min by annular space, judge whether sand control blanking plug inserts completely and put in place; After involution lattice tested by sand control blanking plug, continue to press down and send into service aid to the feeding shear pin of fishing rod cotter slot and all shear, namely send into service aid and sand control blanking plug is slipped out of the hand smoothly.
Blanking plug is salvaged and is reclaimed operation: enter first down special fishing socket and carry out sand washing to sand control blanking plug top, sand washing is returned out totally, press down fishing socket and catch the fishing rod of sand control blanking plug to it, by on carry, transfer fishing socket and turn on pump loop test, judge whether fishing socket stings tight sand control blanking plug smoothly, as confirmed to firmly grasp, continuation is carried fishing socket to cut off to shear pin, upper spindle and lower spindle move, expose pressure compensation opening, sand control blanking plug two-way pressure is balanced, simultaneously, projection proposes contraction, the elastic claw of sand control blanking plug is shunk, then carry fishing socket on continuing slip out of the hand completely to sand control blanking plug and top packer and reclaim.
Claims (9)
1. a sand control blanking plug, is characterized in that: comprise fishing rod, the upper spindle be threaded with fishing rod, the lower spindle be connected with upper spindle, be sleeved on the outside and connecting cylinder that is that fixed with upper spindle by shear pin of fishing rod; The described upper spindle other end by securing member and lower spindle affixed, described connecting cylinder outside is set with supporting positive cover and sliding sleeve successively from left to right, and described supporting positive cover internal thread connects elastic claw; Described sliding sleeve is shaped with the pilot hole for installing projection, at pilot hole built with projection; Sliding sleeve outer cover assembly set, described supporting internal thread connects lower contact, on supporting, seal modules and stop collar is housed.
2. sand control blanking plug according to claim 1, is characterized in that: described fishing rod top is provided with the conical section be convenient to running tool or connected fishing socket.
3. sand control blanking plug according to claim 2, is characterized in that: described fishing rod inside is shaped with and can discharges top, low pressure and be convenient to the circulation canal of follow-up recycling operation.
4. sand control blanking plug according to claim 3, is characterized in that: described fishing rod circumference is also shaped with for the cotter slot with fishing socket bayonet fittings.
5. sand control blanking plug according to claim 1, is characterized in that: described connecting cylinder is outside connects suit supporting positive cover by key.
6. sand control blanking plug according to claim 1, is characterized in that: described lower spindle is equipped with locating snap ring.
7. sand control blanking plug according to claim 1, is characterized in that: described elastic claw is shaped with and convenient be connected with packer releasing-joint and realize locking and the left-handed side of blocking function detains.
8. sand control blanking plug according to claim 1, is characterized in that: described sliding sleeve, upper spindle and lower contact are all shaped with pressure compensation opening.
9. adopt a method of operating for claim 1 sand control blanking plug, it is characterized in that: comprise the steps:
Enter under blanking plug, test envelope and operation of slipping out of the hand:
First use special running tool that sand control blanking plug is sent to packer top, send into service aid after putting in place and press down 2-3t, left-handed side's button of sand control blanking plug elastic claw is made to insert left-handed side's button of packer releasing-joint, simultaneously the seal modules of sand control blanking plug enters packer central tube and cooperatively interacts, and realizes sealing; After scene judges that sand control blanking plug is lowered into position, suppress to 2000Psi × 15min by annular space, judge whether sand control blanking plug inserts completely and put in place; After involution lattice tested by sand control blanking plug, continue to press down and send into service aid to the feeding shear pin of fishing rod cotter slot and all shear, namely send into service aid and sand control blanking plug is slipped out of the hand smoothly;
Blanking plug is salvaged and is reclaimed operation: enter first down special fishing socket and carry out sand washing to sand control blanking plug top, sand washing is returned out totally, press down fishing socket and catch the fishing rod of sand control blanking plug to it, by on carry, transfer fishing socket and turn on pump loop test, judge whether fishing socket stings tight sand control blanking plug smoothly, as confirmed to firmly grasp, continuation is carried fishing socket to cut off to shear pin, upper spindle and lower spindle move, expose pressure compensation opening, sand control blanking plug two-way pressure is balanced, simultaneously, projection proposes contraction, the elastic claw of sand control blanking plug is shunk, then carry fishing socket on continuing slip out of the hand completely to sand control blanking plug and top packer and reclaim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310140449.3A CN103206187B (en) | 2013-04-22 | 2013-04-22 | Sand control blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310140449.3A CN103206187B (en) | 2013-04-22 | 2013-04-22 | Sand control blanking plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103206187A CN103206187A (en) | 2013-07-17 |
| CN103206187B true CN103206187B (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310140449.3A Active CN103206187B (en) | 2013-04-22 | 2013-04-22 | Sand control blanking plug |
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| Country | Link |
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| CN (1) | CN103206187B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265231B (en) * | 2014-09-10 | 2016-08-24 | 中国石油化工股份有限公司 | Circulation blanking plug and using method thereof |
| CN104929560A (en) * | 2015-06-15 | 2015-09-23 | 宝鸡市赛孚石油机械有限公司 | Sand-prevention blanking plug |
| CN110847857B (en) * | 2019-12-06 | 2021-10-08 | 中国石油集团渤海钻探工程有限公司 | Can spacing prevent sand setting blanking plug |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3434538A (en) * | 1966-09-26 | 1969-03-25 | Dresser Ind | Retrievable bridge plug |
| CN200952386Y (en) * | 2006-03-01 | 2007-09-26 | 牟维海 | Three-protection packer |
| CN201334890Y (en) * | 2009-01-06 | 2009-10-28 | 四机赛瓦石油钻采设备有限公司 | Blanking plug |
| CN201826805U (en) * | 2010-10-18 | 2011-05-11 | 中国石油化工股份有限公司 | Tubing plug for oil and gas field |
| CN102561991A (en) * | 2012-01-18 | 2012-07-11 | 中国石油天然气股份有限公司 | Small-diameter hydrostatic setting plug |
| CN202338261U (en) * | 2011-10-17 | 2012-07-18 | 中国石油天然气股份有限公司 | Repeated oil pipe plug |
| CN203188964U (en) * | 2013-04-22 | 2013-09-11 | 中国海洋石油总公司 | Blanking plug for sand prevention |
-
2013
- 2013-04-22 CN CN201310140449.3A patent/CN103206187B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3434538A (en) * | 1966-09-26 | 1969-03-25 | Dresser Ind | Retrievable bridge plug |
| CN200952386Y (en) * | 2006-03-01 | 2007-09-26 | 牟维海 | Three-protection packer |
| CN201334890Y (en) * | 2009-01-06 | 2009-10-28 | 四机赛瓦石油钻采设备有限公司 | Blanking plug |
| CN201826805U (en) * | 2010-10-18 | 2011-05-11 | 中国石油化工股份有限公司 | Tubing plug for oil and gas field |
| CN202338261U (en) * | 2011-10-17 | 2012-07-18 | 中国石油天然气股份有限公司 | Repeated oil pipe plug |
| CN102561991A (en) * | 2012-01-18 | 2012-07-11 | 中国石油天然气股份有限公司 | Small-diameter hydrostatic setting plug |
| CN203188964U (en) * | 2013-04-22 | 2013-09-11 | 中国海洋石油总公司 | Blanking plug for sand prevention |
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| Publication number | Publication date |
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| CN103206187A (en) | 2013-07-17 |
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