CN100526599C - Same-well double-medium synchronous separate injection tubing string tool and its separate injection method - Google Patents
Same-well double-medium synchronous separate injection tubing string tool and its separate injection method Download PDFInfo
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- CN100526599C CN100526599C CNB2007101062096A CN200710106209A CN100526599C CN 100526599 C CN100526599 C CN 100526599C CN B2007101062096 A CNB2007101062096 A CN B2007101062096A CN 200710106209 A CN200710106209 A CN 200710106209A CN 100526599 C CN100526599 C CN 100526599C
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- oil pipe
- allocation device
- blanking plug
- injection allocation
- eccentric injection
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- 238000002347 injection Methods 0.000 title claims abstract description 86
- 239000007924 injection Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000001360 synchronised effect Effects 0.000 title claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229920000642 polymer Polymers 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000000605 extraction Methods 0.000 abstract 1
- 230000001055 chewing effect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The invention belongs to the oil extraction engineering technology field, and it is the down-hole instrument of two different oil displacement medium which is injected into same injection well simultaneously in oil field and its layered injection method, it solves the problem of one injection well can be injected with two different oil displacement medium simultaneously in the prior technology. Its separate-injection string mainly consists of oil pipe 1, interpolated packer 2, water-guiding pipe 3, eccentric matching injector 4, water injecting blanking plug 5, double central pipe packer6, injecting gathering packer 7 and tail pipe 8; among them, the water injecting blanking plug 5 is put in the lateral hole on one side of the upper eccentric matching injector 4, the injecting gathering packer 7 is put in the lateral hole on one side of the lower eccentric matching injector 4, the separate-injection method is realized through using the separate-injection string instrument, it is mainly used in oil field separate-injection well, the advantages are novel and simple structure, achieving the simultaneous injection of two oil displacement medium in multilayer, and it can control the injection amount in separate separate-injection layer and section.
Description
Technical field:
The invention belongs to technical field of oil production engineering, is that the oil field is with injecting downhole tool and the layering method for implanting thereof that well injects two kinds of different displacement of reservoir oil media simultaneously flatly.
Background technology:
The oil field does not also have same-well double-medium synchronous separate injection tubing string and zonal injection technology at present, injects water and two kinds of displacement of reservoir oil media of polymer simultaneously in order to realize same well, has developed same-well double-medium synchronous separate injection tubing string and zonal injection technology thereof.To oil reservoir grow, permeability height, injection pressure is strong and the rising space is big oil reservoir adopt polymer flooding, the oil reservoir bad to growing, that permeability is low is selected water drive, thereby effectively utilizes idle well pattern, the requirement that improves the well pattern degree of perfection.
Summary of the invention:
The object of the invention provides a kind of with injecting same-well double-medium synchronous separate injection tubing string instrument and the dispensing method thereof that well injects two kinds of different displacement of reservoir oil media simultaneously flatly.
Separate injection tubing string tool of the present invention is mainly by mainly by the top oil pipe, the interpolation type packer, aqueduct, eccentric injection allocation device, the water filling blanking plug, two central tube packers, annotate poly-blanking plug, tail pipe is formed, wherein the top connection of top oil pipe and interpolation type packer is by screwed connection, internal oil pipe is connected with the lower contact of interpolation type packer is inner, and positioning and locking, the side opening of one end of aqueduct and the lower contact position of interpolation type packer is by being threaded, the side opening of the other end and the top connection of two central tube packers is by being threaded, and the side aqueduct in the centre position of aqueduct is communicated with the water filling blanking plug of eccentric injection allocation device, the water filling blanking plug is put into the inclined to one side hole of top eccentric injection allocation device one side, the lower contact of interpolation type packer is outside to be connected with the top oil pipe, the top oil pipe is connected with the top connection of top eccentric injection allocation device by tubing thread, the lower contact of top eccentric injection allocation device is connected with the middle part oil pipe by tubing thread, the middle part oil pipe is connected with two central tube packer top connections by tubing thread, the lower contact of two central tube packers is connected with the bottom oil pipe by tubing thread, annotate poly-blanking plug and put into the inclined to one side hole of following eccentric injection allocation device one side, the bottom oil pipe is connected by tubing thread with the top connection of following eccentric injection allocation device, and the lower contact of following eccentric injection allocation device is connected with tail pipe by tubing thread.
Utilize the dispensing method of same-well double-medium synchronous separate injection tubing string instrument, it is realized by following steps:
A, at first internal oil pipe is laid down from the lower contact junction of interpolation type packer, and the water filling blanking plug and annotate poly-blanking plug from top eccentric injection allocation device and below eccentric injection allocation device in take out;
Secondly b, the blanking plug that sets on top is put into top eccentric injection allocation device and the blanking plug that sets of bottom is put into following eccentric injection allocation device, and with it down to target zone position;
C, by adding hydraulic pressure in the oil pipe of top, make interpolation type packer and two central tube packer settings;
D, pull the blanking plug that sets in top eccentric injection allocation device and the following eccentric injection allocation device out;
E, with dropping into the water filling blanking plug in superincumbent eccentric injection allocation device of steel wire and the following eccentric injection allocation device respectively and annotating poly-blanking plug;
F, be lowered to internal oil pipe in the oil pipe of top, internal oil pipe is connected with the lower contact of interpolation type packer, and positioning and locking;
G, by the ring-like space water filling of top oil pipe and internal oil pipe, water enters top eccentric injection allocation device through the side aqueduct in aqueduct centre position, enters the stratum after chewing adjusting by the throttling water of water filling blanking plug then;
H, by internal oil pipe internal channel injection of polymer solution, polymer solution flow through interpolation type packer and top oil pipe, middle part oil pipe and bottom oil pipe, after passing through the inclined to one side hole of following eccentric injection allocation device again, by entering the stratum after the restricting element throttling of annotating poly-blanking plug.
The diameter of described top oil pipe is 31/2 ＂.The diameter of described internal oil pipe is 23/8 ＂.
Compared with the prior art the present invention has the following advantages:
Simple in structure, novel, can realize that the multilayer of two kinds of displacement of reservoir oil media injects simultaneously, adopt the wire Launching and Bailing blanking plug, oil reservoir for different in kind, select different injected medias by the different blanking plug of pulling, and can carry out the control of each separate injection interval injection rate, each interval can both satisfy the requirement of stratified flow rate test and allotment.
Description of drawings:
Fig. 1 is a structural representation of the present invention; Fig. 2 puts into the structural representation that sets blanking plug 9.
The specific embodiment:
Below in conjunction with accompanying drawing the present invention is done further auspicious stating: separate injection tubing string tool of the present invention is mainly by top oil pipe 1, interpolation type packer 2, aqueduct 3, eccentric injection allocation device 4, water filling blanking plug 5, two central tube packers 6, annotate poly-blanking plug 7, tail pipe 8 is formed, wherein the top connection of top oil pipe 1 and interpolation type packer 2 is by screwed connection, internal oil pipe 10 is connected with the lower contact of interpolation type packer 2 is inner, and positioning and locking, the side opening of one end of aqueduct 3 and the lower contact position of interpolation type packer 2 is by being threaded, the side opening of the other end and the top connection of two central tube packers 6 is by being threaded, and the side aqueduct in the centre position of aqueduct 3 is communicated with the water filling blanking plug 5 of eccentric injection allocation device 4, water filling blanking plug 5 is put into the inclined to one side hole of top eccentric injection allocation device 4 one sides, the lower contact of interpolation type packer 2 is outside to be connected with top oil pipe 11, top oil pipe 11 is connected with the top connection of top eccentric injection allocation device 4 by tubing thread, the lower contact of top eccentric injection allocation device 4 is connected with middle part oil pipe 12 by tubing thread, middle part oil pipe 12 is connected with two central tube packer (6) top connections by tubing thread, the lower contact of two central tube packers (6) is connected with bottom oil pipe 13 by tubing thread, annotate poly-blanking plug 7 and put into the inclined to one side hole of following eccentric injection allocation device 4 one sides, bottom oil pipe 13 is connected by tubing thread with the top connection of following eccentric injection allocation device 4, and the lower contact of following eccentric injection allocation device 4 is connected with tail pipe 8 by tubing thread.
Utilize the dispensing method of same-well double-medium synchronous separate injection tubing string instrument, it is realized by following steps:
A, at first internal oil pipe 10 is laid down from the lower contact junction of interpolation type packer 2, and water filling blanking plug 5 and annotate poly-blanking plug 7 from top eccentric injection allocation device 4 and below eccentric injection allocation device 4 in take out;
Secondly b, the blanking plug 9 that sets on top is put into top eccentric injection allocation device 4 and the blanking plug 9 that sets of bottom is put into following eccentric injection allocation device 4, and it is arrived target zone position down;
C, by adding hydraulic pressure in the top oil pipe 1, interpolation type packer 2 and two central tube packers 6 are set;
D, pull out and set blanking plug (9) in top eccentric injection allocation device 4 and the following eccentric injection allocation device 4;
E, with dropping into water filling blanking plug 5 in superincumbent eccentric injection allocation device 4 of steel wire and the following eccentric injection allocation device 4 respectively and annotating poly-blanking plug 7;
F, be lowered to internal oil pipe 10 in top oil pipe 1, internal oil pipe 10 is connected with the lower contact of interpolation type packer 2, and positioning and locking;
G, by top oil pipe 1 ring-like space water filling with internal oil pipe 10, water enters top eccentric injection allocation device 4 through the side aqueduct in aqueduct 3 centre positions, enters the stratum after chewing adjusting by the throttling water of water filling blanking plug 5 then;
H, by internal oil pipe 10 internal channel injection of polymer solution, polymer solution flow through interpolation type packer 2 and top oil pipe 11, middle part oil pipe 12 and bottom oil pipe 13, after passing through the inclined to one side hole of following eccentric injection allocation device 4 again, by entering the stratum after the restricting element throttling of annotating poly-blanking plug 7.
The diameter of described top oil pipe 1 is 3 1/2 ＂.The diameter of described internal oil pipe 10 is 2 3/8 ＂.
Claims (4)
1, the same-well double-medium synchronous separate injection tubing string instrument, it is characterized in that: it is mainly by top oil pipe (1), interpolation type packer (2), aqueduct (3), eccentric injection allocation device (4), water filling blanking plug (5), two central tube packers (6), annotate poly-blanking plug (7), tail pipe (8) is formed, wherein the top connection of top oil pipe (1) and interpolation type packer (2) is by screwed connection, internal oil pipe (10) is connected with the lower contact of interpolation type packer (2) is inner, and positioning and locking, the side opening of one end of aqueduct (3) and the lower contact position of interpolation type packer (2) is by being threaded, the side opening of the other end and the top connection of two central tube packers (6) is by being threaded, and the side aqueduct in the centre position of aqueduct (3) is communicated with the water filling blanking plug (5) of eccentric injection allocation device (4), water filling blanking plug (5) is put into the inclined to one side hole of top eccentric injection allocation device (4) one sides, the lower contact of interpolation type packer (2) is outside to be connected with top oil pipe (11), top oil pipe (11) is connected with the top connection of top eccentric injection allocation device (4) by tubing thread, the lower contact of top eccentric injection allocation device (4) is connected with middle part oil pipe (12) by tubing thread, middle part oil pipe (12) is connected with two central tube packer (6) top connections by tubing thread, the lower contact of two central tube packers (6) is connected with bottom oil pipe (13) by tubing thread, annotate poly-blanking plug (7) and put into the inclined to one side hole of following eccentric injection allocation device (4) one sides, bottom oil pipe (13) is connected by tubing thread with the top connection of following eccentric injection allocation device (4), and the lower contact of following eccentric injection allocation device (4) is connected with tail pipe (8) by tubing thread.
2, same-well double-medium synchronous separate injection tubing string instrument according to claim 1, its feature also is: the diameter of described top oil pipe (1) is 31/2 ＂.
3, same-well double-medium synchronous separate injection tubing string instrument according to claim 1, its feature also is: the diameter of described internal oil pipe (10) is 23/8 ＂.
4, utilize the dispensing method of same-well double-medium synchronous separate injection tubing string instrument as claimed in claim 1, it is characterized in that: it is realized by following steps:
A, at first internal oil pipe (10) is laid down from the lower contact junction of interpolation type packer (2), and water filling blanking plug (5) and annotate poly-blanking plug (7) from top eccentric injection allocation device (4) and below eccentric injection allocation device (4) in taking-up;
Secondly b, the blanking plug (9) that sets on top is put into top eccentric injection allocation device (4) and the blanking plug (9) that sets of bottom is put into following eccentric injection allocation device (4), and it is arrived target zone position down;
C, by adding hydraulic pressure in the top oil pipe (1), interpolation type packer (2) and two central tube packers (6) are set;
D, pull out and set blanking plug (9) in top eccentric injection allocation device (4) and the following eccentric injection allocation device (4);
E, with dropping into water filling blanking plug (5) in superincumbent eccentric injection allocation device of steel wire (4) and the following eccentric injection allocation device (4) respectively and annotating poly-blanking plug (7);
F, be lowered to internal oil pipe (10) in top oil pipe (1), internal oil pipe (10) is connected with the lower contact of interpolation type packer (2), and positioning and locking;
G, by the ring-like space water filling of top oil pipe (1) and internal oil pipe (10), water enters top eccentric injection allocation device (4) through the side aqueduct in aqueduct (3) centre position, enters the stratum after the throttling water nozzle adjusting by water filling blanking plug (5) then;
H, by internal oil pipe (10) internal channel injection of polymer solution, polymer solution flow through interpolation type packer (2) and top oil pipe (11), middle part oil pipe (12) and bottom oil pipe (13), after passing through the inclined to one side hole of following eccentric injection allocation device (4) again, by entering the stratum after the restricting element throttling of annotating poly-blanking plug (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101062096A CN100526599C (en) | 2007-05-11 | 2007-05-11 | Same-well double-medium synchronous separate injection tubing string tool and its separate injection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101062096A CN100526599C (en) | 2007-05-11 | 2007-05-11 | Same-well double-medium synchronous separate injection tubing string tool and its separate injection method |
Publications (2)
| Publication Number | Publication Date |
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| CN101059073A CN101059073A (en) | 2007-10-24 |
| CN100526599C true CN100526599C (en) | 2009-08-12 |
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| CNB2007101062096A Active CN100526599C (en) | 2007-05-11 | 2007-05-11 | Same-well double-medium synchronous separate injection tubing string tool and its separate injection method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775977B (en) * | 2010-01-22 | 2014-03-05 | 中国石油化工股份有限公司 | Dual-tube injection well safety production string |
| CN104234671A (en) * | 2014-09-23 | 2014-12-24 | 中国石油天然气股份有限公司 | Water-gathering same-well layering same-injection process pipe column |
| CN109339748B (en) * | 2018-09-11 | 2020-12-29 | 中国海洋石油集团有限公司 | Water accumulation separate injection device suitable for offshore oil field |
| CN111485861B (en) * | 2019-01-29 | 2022-05-10 | 中国石油天然气股份有限公司 | Water injection and polymer injection bidirectional conversion pipe column and use method thereof |
| CN111119811A (en) * | 2019-12-25 | 2020-05-08 | 中国石油天然气股份有限公司 | Dual-medium dispenser, dispensing string, and method for operating dispensing string |
| CN114458259B (en) * | 2020-11-03 | 2024-08-20 | 中国海洋石油集团有限公司 | Control device and control method for double-medium layered injection flow |
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- 2007-05-11 CN CNB2007101062096A patent/CN100526599C/en active Active
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| CN101059073A (en) | 2007-10-24 |
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Effective date of registration: 20211227 Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District Central Plains Road No. 99 Patentee after: Daqing Oilfield Co.,Ltd. Patentee after: PetroChina Company Limited Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District Central Plains Road No. 99 Patentee before: Daqing Oilfield Co.,Ltd. |
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