CN111878029A - Oil recovery injection allocation operation is with dragging for blanking plug - Google Patents
Oil recovery injection allocation operation is with dragging for blanking plug Download PDFInfo
- Publication number
- CN111878029A CN111878029A CN202010945667.4A CN202010945667A CN111878029A CN 111878029 A CN111878029 A CN 111878029A CN 202010945667 A CN202010945667 A CN 202010945667A CN 111878029 A CN111878029 A CN 111878029A
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- Prior art keywords
- sleeve
- fishing
- mandrel
- dropping
- plug
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Links
- 238000002347 injection Methods 0.000 title claims abstract description 21
- 239000007924 injection Substances 0.000 title claims abstract description 21
- 238000011084 recovery Methods 0.000 title claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims abstract description 26
- 238000000605 extraction Methods 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 238000005266 casting Methods 0.000 description 14
- 229920000642 polymer Polymers 0.000 description 9
- 239000011324 bead Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000004576 sand Substances 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
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
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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)
Abstract
A throwing-fishing blanking plug for oil extraction injection allocation operation comprises a barrel body, a core shaft, a rotary sleeve and a throwing-fishing locking head, wherein the core shaft is arranged in the barrel body, the upper end of the barrel body on the core shaft is in threaded connection with the rotary sleeve, the end head of the core shaft is in threaded connection with the throwing-fishing locking head above the rotary sleeve, one end of the barrel body which is internally connected with the throwing-fishing locking head is provided with an inner sleeve on the core shaft, the bottom surface of the inner sleeve is connected with a connecting rod sleeve, the bottom end of the connecting rod sleeve is rotationally connected with a plurality of groups of two connecting rods, the other end of the two connecting rods is rotationally connected with an extrusion sleeve, and the core shaft at the inner side of the other end of the barrel body is in interference connection with a limiting sleeve. The better the oil recovery rate is, the more the plug can block the flow passage only by rotating the rotary sleeve.
Description
Technical Field
The invention relates to a blanking plug, in particular to a throwing and fishing blanking plug for oil extraction injection allocation operation.
Background
The conventional polymer injection well blanking plug is a fixed adjustment in the eccentric injection distributor. Because the polymer injection well plug adopts a mode of fixedly connecting the conventional plug and the eccentric injection distributor, the conventional plug has the defects of irreplaceability, serious mechanical shearing and the like. Since the viscosity of the polymer in the polymer injection well is critical to the efficiency of oil recovery, and the viscosity of the polymer is in turn influenced primarily by the mechanical shear forces of the distributor plug, the smaller the shear forces, the smaller the viscosity reduction of the polymer. Due to the fact that the blanking plug is operated in the underground mode, the situation that the blanking plug is blocked by impurities such as sand can happen frequently. In this case, if a conventional plug is used, the entire dispenser needs to be replaced, which severely affects the efficiency of oil production and increases the cost of oil production.
Disclosure of Invention
The invention provides a throwing and fishing blanking plug for oil extraction injection allocation operation to solve the problems.
The technical scheme adopted by the invention is as follows:
the utility model provides an oil recovery is joined in marriage notes operation with throwing and is dragged for blanking plug, the novel nipple rectifier comprises a cylindrical shel, the dabber, the swivel sleeve with throw and drag for locking head, the dabber sets up in the barrel, the spindle is at the upper end threaded connection swivel sleeve of barrel, the end of dabber with throw and drag for locking head threaded connection in the top of swivel sleeve, the inherent one end that has throw and drag for locking head of barrel is at the epaxial interior sleeve that is equipped with of dabber, interior sheathed tube bottom surface is connected with the connecting rod cover, the bottom of connecting rod cover is rotated and is connected with two sections connecting rods of multiunit, the other end of two sections connecting rods is rotated and is connected with the extrusion cover, the inboard dabber interference of the other end of barrel is connected with the stop collar, the spindle cover between extrusion cover and.
The lower part of the throwing and dragging locking head and the outer side of the joint of the throwing and dragging locking head and the mandrel are sleeved with a throwing and dragging head protective sleeve, and the outer wall of the lower part of the throwing and dragging head protective sleeve is provided with an annular boss.
The inner side upper portion of the rotary sleeve is provided with an inner sleeve groove, the wall surface of the inner sleeve groove is provided with an annular groove, the lower portion of the casting and fishing head protective sleeve is rotatably sleeved in the inner sleeve groove on the upper portion of the rotary sleeve, the annular boss is embedded into the annular groove, the inner side lower portion of the rotary sleeve is provided with a thread, and the thread is connected with the mandrel through the thread.
And the bottom of the connecting rod sleeve and the top of the extrusion sleeve are circumferentially and uniformly distributed at opposite positions and are rotatably connected with two connecting rods.
The outer diameter of one end of the extrusion sleeve connected with the two sections of connecting rods is smaller than that of one end far away from the two sections of connecting rods.
The bottom end of the cylinder body is in threaded connection with a lower cylinder body, and a core shaft between the lower cylinder body and the limiting sleeve is connected with a cushion cover.
The outer wall of the lower cylinder body is provided with a rectangular groove.
The invention has the beneficial effects that: the invention combines the throwing and fishing head with the blanking plug, so that when the flow passage of the blanking plug is blocked, the whole injection allocation device is not required to be replaced, only the blanking plug part is required to be replaced, the mechanical shearing force of the mandrel and the barrel of the blanking plug is small, the viscosity of the polymer is reduced, the smaller the viscosity of the polymer is reduced, the better the oil extraction rate is, and the flow passage can be blocked by the blanking plug only by rotating the rotary sleeve.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein: 1-throwing and dragging locking head; 2-casting and fishing head protective sleeve; 3-an annular boss; 4-rotating the sleeve; 5-inner sleeve; 6-connecting rod sleeve; 7-a cylinder body; 8-two sections of connecting rods; 9-extruding a sleeve; 10-sealing the rubber plug; 11-a stop collar; 12-liquid inlet and outlet; 13-cushion cover; 14-lower cylinder; 15-rectangular grooves; 16-mandrel.
Detailed Description
A throwing and fishing blanking plug for oil extraction injection allocation operation, which comprises a cylinder body 7 and a mandrel 16, rotating sleeve 4 with throw and drag for locking head 1, dabber 16 sets up in barrel 7, upper end threaded connection rotating sleeve 4 at barrel 7 on the dabber 16, dabber 16's end is in rotating sleeve 4's top and throw and drag for locking head 1 threaded connection, the one end of throwing and dragging for locking head 1 is equipped with interior sleeve pipe 5 on dabber 16 in barrel 7 being connected with, the bottom surface of interior sleeve pipe 5 is connected with connecting rod cover 6, the bottom of connecting rod cover 6 is rotated and is connected with two sections of connecting rod 8 of multiunit, the other end of two sections of connecting rod 8 is rotated and is connected with extrusion cover 9, the interference is connected with stop collar 11 on the inboard dabber 16 of the other end of barrel 7, the cover is equipped with a plurality of sealed plug 10 of calculating the bead series connection on dabber 16 between extrusion cover 9 and stop collar 11, liquid inlet and outlet 12 has been seted up.
The outer side of the joint of the lower part of the casting and fishing locking head 1 and the mandrel 16 is sleeved with a casting and fishing head protective sleeve 2, and the outer wall of the lower part of the casting and fishing head protective sleeve 2 is provided with an annular boss 3.
The inboard upper portion of swivel mount 4 seted up the inner jacket groove, seted up annular groove on the wall in inner jacket groove, the lower part of throwing and dragging for first protective sheath 2 rotates to cup joint in the inner jacket inslot on swivel mount 4 upper portion, and in annular boss 3 embedding annular groove, the inboard lower part of swivel mount 4 is seted up threadedly, is connected with dabber 16 through the screw thread.
The outer diameter of one end of the extrusion sleeve 9 connected with the two-section connecting rod 8 is smaller than that of one end far away from the two-section connecting rod 8.
The bottom end of the cylinder body 7 is in threaded connection with a lower cylinder body 14, and a mandrel 16 between the lower cylinder body 14 and the limiting sleeve 11 is connected with a cushion cover 13.
The outer wall of the lower cylinder 14 is provided with a rectangular groove 15.
The application principle, throw and drag for locking head 1 and blanking plug threaded connection, realize throwing and drag for, blanking plug inside sets up dabber 16, when needs control polymer flow, rotation dabber 16, because dabber 16 and 4 threaded connection of swivel mount, dabber 16 is rotatory then to be shifted up, it drives stop collar 11 and moves up to move up the in-process, stop collar 11 and extrusion cover 9 are close to extrusion sealing plug 10 each other, deformation expansion takes place in the extrusion of sealing plug 10, thereby make sealing plug 10 play sealed effect to 7 inner walls of barrel, when needing the deblocking, reverse rotation dabber 16, dabber 16 drives stop collar 11 and moves down, then sealing plug 10 between stop collar 11 and extrusion cover 9 contracts gradually and enlarges the liquid circulation space.
The present invention will be described in detail with reference to specific examples.
Example 1
A throwing and fishing blanking plug for oil extraction injection allocation operation, which comprises a cylinder body 7 and a mandrel 16, rotating sleeve 4 with throw and drag for locking head 1, dabber 16 sets up in barrel 7, upper end threaded connection rotating sleeve 4 at barrel 7 on the dabber 16, dabber 16's end is in rotating sleeve 4's top and throw and drag for locking head 1 threaded connection, the one end of throwing and dragging for locking head 1 is equipped with interior sleeve pipe 5 on dabber 16 in barrel 7 being connected with, the bottom surface of interior sleeve pipe 5 is connected with connecting rod cover 6, the bottom of connecting rod cover 6 is rotated and is connected with two sections of connecting rod 8 of multiunit, the other end of two sections of connecting rod 8 is rotated and is connected with extrusion cover 9, the interference is connected with stop collar 11 on the inboard dabber 16 of the other end of barrel 7, the cover is equipped with a plurality of sealed plug 10 of calculating the bead series connection on dabber 16 between extrusion cover 9 and stop collar 11, liquid inlet and outlet 12 has been seted up.
The outer side of the joint of the lower part of the casting and fishing locking head 1 and the mandrel 16 is sleeved with a casting and fishing head protective sleeve 2, and the outer wall of the lower part of the casting and fishing head protective sleeve 2 is provided with an annular boss 3.
The inboard upper portion of swivel mount 4 seted up the inner jacket groove, seted up annular groove on the wall in inner jacket groove, the lower part of throwing and dragging for first protective sheath 2 rotates to cup joint in the inner jacket inslot on swivel mount 4 upper portion, and in annular boss 3 embedding annular groove, the inboard lower part of swivel mount 4 is seted up threadedly, is connected with dabber 16 through the screw thread.
The outer diameter of one end of the extrusion sleeve 9 connected with the two-section connecting rod 8 is smaller than that of one end far away from the two-section connecting rod 8.
The bottom end of the cylinder body 7 is in threaded connection with a lower cylinder body 14, and a mandrel 16 between the lower cylinder body 14 and the limiting sleeve 11 is connected with a cushion cover 13.
The outer wall of the lower cylinder body 14 is provided with a rectangular groove 15, so that the lower cylinder body can be conveniently matched with other components.
Example 2
A throwing and fishing blanking plug for oil extraction injection allocation operation, which comprises a cylinder body 7 and a mandrel 16, rotating sleeve 4 with throw and drag for locking head 1, dabber 16 sets up in barrel 7, upper end threaded connection rotating sleeve 4 at barrel 7 on the dabber 16, dabber 16's end is in rotating sleeve 4's top and throw and drag for locking head 1 threaded connection, the one end of throwing and dragging for locking head 1 is equipped with interior sleeve pipe 5 on dabber 16 in barrel 7 being connected with, the bottom surface of interior sleeve pipe 5 is connected with connecting rod cover 6, the bottom of connecting rod cover 6 is rotated and is connected with two sections of connecting rod 8 of multiunit, the other end of two sections of connecting rod 8 is rotated and is connected with extrusion cover 9, the interference is connected with stop collar 11 on the inboard dabber 16 of the other end of barrel 7, the cover is equipped with a plurality of sealed plug 10 of calculating the bead series connection on dabber 16 between extrusion cover 9 and stop collar 11, liquid inlet and outlet 12 has been seted up.
The outer side of the joint of the lower part of the casting and fishing locking head 1 and the mandrel 16 is sleeved with a casting and fishing head protective sleeve 2, and the outer wall of the lower part of the casting and fishing head protective sleeve 2 is provided with an annular boss 3.
The inboard upper portion of swivel mount 4 seted up the inner jacket groove, seted up annular groove on the wall in inner jacket groove, the lower part of throwing and dragging for first protective sheath 2 rotates to cup joint in the inner jacket inslot on swivel mount 4 upper portion, and in annular boss 3 embedding annular groove, the inboard lower part of swivel mount 4 is seted up threadedly, is connected with dabber 16 through the screw thread.
The bottom end of the cylinder body 7 is in threaded connection with a lower cylinder body 14, and a mandrel 16 between the lower cylinder body 14 and the limiting sleeve 11 is connected with a cushion cover 13.
The outer diameter of one end, connected with the two-section connecting rod 8, of the extrusion sleeve 9 is smaller than that of one end, far away from the two-section connecting rod 8, of the extrusion sleeve 9, so that the influence of the wall thickness, influenced by the extrusion sleeve 9, on the movement of the two-section connecting rod 8 is avoided.
Example 3
A throwing and fishing blanking plug for oil extraction injection allocation operation, which comprises a cylinder body 7 and a mandrel 16, rotating sleeve 4 with throw and drag for locking head 1, dabber 16 sets up in barrel 7, upper end threaded connection rotating sleeve 4 at barrel 7 on the dabber 16, dabber 16's end is in rotating sleeve 4's top and throw and drag for locking head 1 threaded connection, the one end of throwing and dragging for locking head 1 is equipped with interior sleeve pipe 5 on dabber 16 in barrel 7 being connected with, the bottom surface of interior sleeve pipe 5 is connected with connecting rod cover 6, the bottom of connecting rod cover 6 is rotated and is connected with two sections of connecting rod 8 of multiunit, the other end of two sections of connecting rod 8 is rotated and is connected with extrusion cover 9, the interference is connected with stop collar 11 on the inboard dabber 16 of the other end of barrel 7, the cover is equipped with a plurality of sealed plug 10 of calculating the bead series connection on dabber 16 between extrusion cover 9 and stop collar 11, liquid inlet and outlet 12 has been seted up.
The outer side of the joint of the lower part of the casting and fishing locking head 1 and the mandrel 16 is sleeved with a casting and fishing head protective sleeve 2, and the outer wall of the lower part of the casting and fishing head protective sleeve 2 is provided with an annular boss 3.
The inboard upper portion of swivel mount 4 seted up the inner jacket groove, seted up annular groove on the wall in inner jacket groove, the lower part of throwing and dragging for first protective sheath 2 rotates to cup joint in the inner jacket inslot on swivel mount 4 upper portion, and in annular boss 3 embedding annular groove, the inboard lower part of swivel mount 4 is seted up threadedly, is connected with dabber 16 through the screw thread.
The bottom of the connecting rod sleeve 6 and the corresponding position of the top of the extrusion sleeve 9 are circumferentially, uniformly and rotatably connected with two connecting rods 8, so that the central line of the mandrel 16 and the central line of the cylinder 7 are coaxial, and the plugging effect is improved.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (6)
1. The dropping and fishing blanking plug for oil extraction injection allocation operation is characterized by comprising a barrel body (7), a mandrel (16), a rotary sleeve (4) and a dropping and fishing locking head (1), wherein the mandrel (16) is arranged in the barrel body (7), the upper end of the barrel body (7) on the mandrel (16) is in threaded connection with the rotary sleeve (4), the end head of the mandrel (16) is in threaded connection with the dropping and fishing locking head (1) above the rotary sleeve (4), one end of the barrel body (7) which is internally connected with the dropping and fishing locking head (1) is provided with an inner sleeve (5) on the mandrel (16), the bottom surface of the inner sleeve (5) is connected with a connecting rod sleeve (6), the bottom end of the connecting rod sleeve (6) is rotatably connected with a plurality of two sections of connecting rods (8), the other end of the two sections of connecting rods (8) is rotatably connected with an extrusion sleeve (9), the mandrel (16) on the inner side of, a plurality of bead-shaped serially-connected sealing rubber plugs (10) are sleeved on a mandrel (16) between the extrusion sleeve (9) and the limiting sleeve (11), and a liquid inlet and outlet (12) is formed in the side wall of the cylinder body (7) below the limiting sleeve (11) and the inner sleeve (5).
2. The dropping and fishing blanking plug for oil recovery injection allocation operation according to claim 1, characterized in that the dropping and fishing head protective sleeve (2) is sleeved outside the lower part of the dropping and fishing locking head (1) and the joint of the dropping and fishing locking head (1) and the mandrel (16), and the outer wall of the lower part of the dropping and fishing head protective sleeve (2) is provided with an annular boss (3).
3. The fishing plug for oil recovery injection allocation operation according to claim 2, wherein an inner sleeve groove is formed in the upper portion of the inner side of the rotary sleeve (4), an annular groove is formed in the wall surface of the inner sleeve groove, the lower portion of the fishing head protective sleeve (2) is rotatably sleeved in the inner sleeve groove in the upper portion of the rotary sleeve (4), the annular boss (3) is embedded in the annular groove, and the lower portion of the inner side of the rotary sleeve (4) is threaded and connected with the mandrel (16) through threads.
4. The fishing plug for oil recovery injection allocation operation according to claim 4, wherein the outer diameter of the end of the extrusion sleeve (9) connected with the two connecting rods (8) is smaller than the outer diameter of the end far away from the two connecting rods (8).
5. The plug for fishing and injection allocation operation in oil recovery according to claim 1, characterized in that the bottom end of the cylinder (7) is connected with a lower cylinder (14) through a thread, and a mandrel (16) between the lower cylinder (14) and the stop collar (11) is connected with a cushion cover (13).
6. The fishing plug for oil recovery injection allocation operation according to claim 5, wherein the outer wall of the lower cylinder (14) is provided with a rectangular groove (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010945667.4A CN111878029B (en) | 2020-09-10 | 2020-09-10 | Oil recovery injection allocation operation is with dragging for blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010945667.4A CN111878029B (en) | 2020-09-10 | 2020-09-10 | Oil recovery injection allocation operation is with dragging for blanking plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111878029A true CN111878029A (en) | 2020-11-03 |
| CN111878029B CN111878029B (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010945667.4A Active CN111878029B (en) | 2020-09-10 | 2020-09-10 | Oil recovery injection allocation operation is with dragging for blanking plug |
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| Country | Link |
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| CN (1) | CN111878029B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201486513U (en) * | 2009-09-21 | 2010-05-26 | 大庆油田有限责任公司 | Single-open screwed adjustable blanking plug |
| CN102146786A (en) * | 2011-02-15 | 2011-08-10 | 董力维 | Polymer flooding and water flooding double-function external adjusting stopper |
| CN202510084U (en) * | 2012-01-16 | 2012-10-31 | 钟立国 | High-pressure well blanking plug |
| CN104314496A (en) * | 2014-08-18 | 2015-01-28 | 哈尔滨工业大学 | Retrievable packer special for polymer injection well |
| CN208966253U (en) * | 2018-09-03 | 2019-06-11 | 中国石油天然气股份有限公司 | Throwing and fishing device and system for blanking plug |
-
2020
- 2020-09-10 CN CN202010945667.4A patent/CN111878029B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201486513U (en) * | 2009-09-21 | 2010-05-26 | 大庆油田有限责任公司 | Single-open screwed adjustable blanking plug |
| CN102146786A (en) * | 2011-02-15 | 2011-08-10 | 董力维 | Polymer flooding and water flooding double-function external adjusting stopper |
| CN202510084U (en) * | 2012-01-16 | 2012-10-31 | 钟立国 | High-pressure well blanking plug |
| CN104314496A (en) * | 2014-08-18 | 2015-01-28 | 哈尔滨工业大学 | Retrievable packer special for polymer injection well |
| CN208966253U (en) * | 2018-09-03 | 2019-06-11 | 中国石油天然气股份有限公司 | Throwing and fishing device and system for blanking plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111878029B (en) | 2022-04-08 |
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