CN1289787C - Apparatus for controlling polymer molecular weight and flow of multiple-layer separate filling into with polymer displacement - Google Patents
Apparatus for controlling polymer molecular weight and flow of multiple-layer separate filling into with polymer displacement Download PDFInfo
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- CN1289787C CN1289787C CN 200410043755 CN200410043755A CN1289787C CN 1289787 C CN1289787 C CN 1289787C CN 200410043755 CN200410043755 CN 200410043755 CN 200410043755 A CN200410043755 A CN 200410043755A CN 1289787 C CN1289787 C CN 1289787C
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- supporting seat
- eccentric
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- relief groove
- seat
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- 229920000642 polymer Polymers 0.000 title claims abstract description 41
- 238000006073 displacement reaction Methods 0.000 title abstract description 4
- 239000002365 multiple layer Substances 0.000 title 1
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- 210000004907 gland Anatomy 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 11
- 238000000151 deposition Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 5
- 230000001105 regulatory effect Effects 0.000 description 8
- 239000000243 solution Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present provides an apparatus for controlling the underground polymer molecular weight and the flow rate of a multi-layer separate filling well with polymer displacement, which relates to an apparatus for controlling the underground polymer molecular weight and the flow rate1 of a multi-layer and pressure-separation filling well of an oil field. The eccentric pipe (5) of the present invention, an upper plug (6) and a lower plug (7) are fixed at the outer side of an eccentric main body (2), a liquid outlet (8) is arranged on the outer wall of the eccentric pipe (5), a liquid inlet (9) is arranged between the eccentric pipe (5) and the eccentric main body (2), and a molecular weight regulator (30) or a pressure regulator (50) is arranged in the eccentric pipe (5). The present invention solves the problem that the layered filled polymer of the prior art has complicated regulation of filling quantity, difficult control of the filling pressure of each layer section, complicated structure of an underground pipe column, influence on the oil driving effect of a polymer and no quality-separation and pressure-separation filling to the polymer. The present invention can regulate the molecular weight and the flow rate of each layer of the filled polymer, realizes the quality-separation and pressure-separation filling of the polymer and has the advantages of novel and simple structure and realization of multi-stage use.
Description
Technical field:
The present invention relates to a kind of field polymers single string multi branch matter dividing potential drop and inject well down-hole molecular weight and flow control device.
Background technology:
The polymer flooding single tube layer 2-3 dispensing technology that mainly contains and the polymer 4-5 layer dispensing technology that are applied at polymer dispensing technical elements.Polymer flooding single tube layer 2-3 dispensing technology is adapted to layer 2-3 polymer dispensing.Single pump single tube feed flow is adopted on ground, and down-hole string adopts the concentric dispensing form of single tube.Change choke pressure by the length of regulating the throttling core, control the injection pressure of each interval, regulate injection rate, thereby realize multi-zone flow regulating.Polymer flooding single tube 4-5 layer dispensing technology is adapted to multi-section multi-layer polymer dispensing.Single pump single tube feed flow is adopted on ground, and down-hole string adopts single tube bridge-type eccentric dispensing form.Control the injection pressure of each interval by the length of regulating injection allocation core in the eccentric injection allocation device, regulate injection rate, thereby realize multi-zone flow regulating.The adjusting of above-mentioned its injection rate of dispensing technology is cumbersome, and the injection pressure of each interval is wayward, and the structure more complicated of down-hole string, can not divide the matter dividing potential drop to inject the oil displacement efficiency of impact polymer to polymer.
Summary of the invention:
The purpose of this invention is to provide a kind of polymer flooding depositing well downhole polymer molecular weight, flow control device, it can be regulated each layer of injection of polymer molecular weight, flow, realize that polymer divides the matter dividing potential drop to inject, have novel structure, simple, can realize the characteristics of multistage use.The present invention annotates poly-device, molecular-weight adjusting device 30 and pressure regulator 50 by off-centre and forms, and the poly-device of eccentric notes is made up of top connection 1, eccentric main body 2, guide way 3, lower contact 4, eccentric pipe 5, upper plug head 6, lower end cap 7; Top connection 1 is threaded with the upper end of eccentric main body 2, lower contact 4 is threaded with the lower end of eccentric main body 2, guide way 3 is arranged on the downside in the eccentric main body 2, upper plug head 6 is fixedlyed connected with the upper end of eccentric pipe 5, lower end cap 7 is fixedlyed connected with the lower end of eccentric pipe 5, eccentric pipe 5 and upper plug head 6 and lower end cap 7 are fixed on the outside of eccentric main body 2, have liquid outlet 8 on the outer wall of eccentric pipe 5, have inlet 9 between eccentric pipe 5 and the eccentric main body 2, molecular-weight adjusting device 30 or pressure regulator 50 are arranged in the eccentric pipe 5; Molecular-weight adjusting device 30 is made up of fishing rod 31, gland 32, stage clip 33, supporting seat 34, torsion spring 35, cam 36, O RunddichtringO 37, connector 39, target plate 40, nozzle 41, lower contact 42; The lower end of fishing rod 31 is arranged in the upper end of supporting seat 34, gland 32 is set in the outside of fishing rod 31 and is threaded with the upper end of supporting seat 34, be provided with stage clip 33 between the slide 45 of fishing rod 31 and the gland 32, cam 36 is located on the wall of supporting seat 34, camshaft 46 is provided with torsion spring 35, the upper end of connector 39 is threaded with the lower end of supporting seat 34, the lower end of supporting seat 34 is fixed with target plate 40, be provided with nozzle 41 in the connector 39, nozzle 41 is corresponding with target plate 40, lower contact 42 is threaded with the lower end of connector 39, have inlet opening 38 in the lower contact 42, have fluid hole 44 on the supporting seat 34, the supporting seat 34 of fluid hole both sides about in the of 44 is provided with O RunddichtringO 37.The layering injection of polymer injection rate that the invention solves prior art is regulated trouble, and the injection pressure of each interval is wayward, and the structure more complicated of down-hole string, can not divide the matter dividing potential drop to inject the shortcoming of the oil displacement efficiency of impact polymer to polymer.The present invention can regulate each layer of injection of polymer molecular weight, flow, has realized the injection of polymer branch matter dividing potential drop, has novel structure, simple, can realize the advantage of multistage use.
Description of drawings:
Fig. 1 is the eccentric structural representation of putting into molecular-weight adjusting device 30 or pressure regulator 50 in the poly-device of annotating of the present invention, and Fig. 2 is the structural representation of molecular-weight adjusting device 30, and Fig. 3 is the structural representation of pressure regulator 50.
The specific embodiment:
The specific embodiment one: (referring to Fig. 1-Fig. 3) the present invention is made up of the poly-device of off-centre notes, molecular-weight adjusting device 30 and pressure regulator 50, the poly-device of eccentric notes is made up of top connection 1, eccentric main body 2, guide way 3, lower contact 4, eccentric pipe 5, upper plug head 6, lower end cap 7; Top connection 1 is threaded with the upper end of eccentric main body 2, lower contact 4 is threaded with the lower end of eccentric main body 2, guide way 3 is arranged on the downside in the eccentric main body 2, upper plug head 6 is fixedlyed connected with the upper end of eccentric pipe 5, lower end cap 7 is fixedlyed connected with the lower end of eccentric pipe 5, eccentric pipe 5 and upper plug head 6 and lower end cap 7 are fixed on the outside of eccentric main body 2, have liquid outlet 8 on the outer wall of eccentric pipe 5, have inlet 9 between eccentric pipe 5 and the eccentric main body 2, molecular-weight adjusting device 30 or pressure regulator 50 are arranged in the eccentric pipe 5.Molecular-weight adjusting device 30 is made up of fishing rod 31, gland 32, stage clip 33, supporting seat 34, torsion spring 35, cam 36, O RunddichtringO 37, connector 39, target plate 40, nozzle 41, lower contact 42; The lower end of fishing rod 31 is arranged in the upper end of supporting seat 34, gland 32 is set in the outside of fishing rod 31 and is threaded with the upper end of supporting seat 34, be provided with stage clip 33 between the slide 45 of fishing rod 31 and the gland 32, cam 36 is located on the wall of supporting seat 34, camshaft 46 is provided with torsion spring 35, the upper end of connector 39 is threaded with the lower end of supporting seat 34, the lower end of supporting seat 34 is fixed with target plate 40, be provided with nozzle 41 in the connector 39, nozzle 41 is corresponding with target plate 40, lower contact 42 is threaded with the lower end of connector 39, have inlet opening 38 in the lower contact 42, have fluid hole 44 on the supporting seat 34, the supporting seat 34 of fluid hole both sides about in the of 44 is provided with O RunddichtringO 37.Pressure regulator 50 is made up of fishing rod 51, gland 52, stage clip 53, supporting seat 54, torsion spring 55, cam 56, camshaft 57, injection allocation core top 58, O RunddichtringO 59, interior annular relief groove seat 60, outer ring relief groove seat 61, afterbody O RunddichtringO 62; The lower end of fishing rod 51 is located in the upper end of supporting seat 54, gland 52 is set in the outside of fishing rod 51 and is threaded with the upper end of supporting seat 54, be provided with stage clip 53 between the slide 65 of fishing rod 51 and the gland 52, camshaft 57 is located on the supporting seat 54, cam 56 is located on the camshaft 57, also be provided with torsion spring 55 on the camshaft 57, the lower end of supporting seat 54 is threaded with the upper end of outer ring relief groove seat 61, the outer wall of outer ring relief groove seat 61 is provided with cannelure 66, the top of interior annular relief groove seat 60 is connected with the lower thread of injection allocation core top 58, interior annular relief groove seat 60 and injection allocation core top 58 are located in the cavity of being made up of supporting seat 54 and outer ring relief groove seat 61 68, the outer wall of interior annular relief groove seat 60 is provided with cannelure 67, the bottom of supporting seat 54 has fluid hole 63, the bottom of outer ring relief groove seat 61 has inlet opening 64, the supporting seat 54 of fluid hole both sides about in the of 63 is provided with O RunddichtringO 59, and the bottom of outer ring relief groove seat 61 inlet openings 64 is provided with afterbody O RunddichtringO 62.
Operating principle: several eccentric are annotated that poly-device couples together by last lower contact and packer is formed injection string together, with the injection string G.I.H, discharge packer, after by packer oil reservoir being separated, with throw in catcher molecular-weight adjusting device 30 and pressure regulator 50 are dropped into eccentric the notes in the eccentric pipe 5 that gathers device, corresponding high permeability zone drops into pressure regulator 50, corresponding less permeable layer input molecule amount adjuster 30.After normal the notes when gathering, polymer solution were injected down-hole oil tube by the ground polymer-injecting pump, liquid stream entered in the molecular-weight adjusting device 30 through the inlet opening 38 on the molecular weight adjuster 30, when flow of solution was crossed nozzle 41, because flow velocity is higher, polymer molecule was elongated, strand ruptures, and produces the one-level degraded; Polymer solution impacts on target plate 40 by behind the nozzle 41, produces eddy current effect in the chamber around the target plate 40, causes the polymer molecule backbone breaking, forms the secondary degraded; Molecular conformation and size change, and then polymer molecular weight is reduced; Liquid injects cavity 68 through the inlet opening 64 of pressure regulator 50, flow out from fluid hole 63 again, liquid is when flowing through pressure regulator 50, at first run into the cannelure 66 on the outer ring relief groove seat 61, cannelure 67 in running into again on the annular relief groove seat 60 is because the variation in flow field produces local energy loss, form chock pressure difference, reduced injection pressure and limited injection rate.When allocating, after molecular-weight adjusting device 30 and pressure regulator 50 pulled out, control the molecular weight of polymer by the distance parameter of regulating nozzle 41 and target plate 40; Control chock pressure difference by the quantity of regulating annular relief groove, regulate zonal flow rate.
Claims (2)
1, polymer flooding depositing well downhole polymer molecular weight, flow control device, it is made up of the poly-device of off-centre notes, molecular-weight adjusting device (30) and pressure regulator (50), and the poly-device of eccentric notes is made up of top connection (1), eccentric main body (2), guide way (3), lower contact (4), eccentric pipe (5), upper plug head (6), lower end cap (7); Top connection (1) is threaded with the upper end of eccentric main body (2), lower contact (4) is threaded with the lower end of eccentric main body (2), guide way (3) is arranged on the downside in the eccentric main body (2), upper plug head (6) is fixedlyed connected with the upper end of eccentric pipe (5), lower end cap (7) is fixedlyed connected with the lower end of eccentric pipe (5), eccentric pipe (5) and upper plug head (6) and lower end cap (7) are fixed on the outside of eccentric main body (2), have liquid outlet (8) on the outer wall of eccentric pipe (5), have inlet (9) between eccentric pipe (5) and the eccentric main body (2), molecular-weight adjusting device (30) or pressure regulator (50) are arranged in the eccentric pipe (5), it is characterized in that molecular-weight adjusting device (30) is by fishing rod (31), gland (32), stage clip (33), supporting seat (34), torsion spring (35), cam (36), O RunddichtringO (37), connector (39), target plate (40), nozzle (41), lower contact (42) is formed; The lower end of fishing rod (31) is arranged in the upper end of supporting seat (34), gland (32) is set in the outside of fishing rod (31) and is threaded with the upper end of supporting seat (34), be provided with stage clip (33) between the slide (45) of fishing rod (31) and the gland (32), cam (36) is located on the wall of supporting seat (34), camshaft (46) is provided with torsion spring (35), the upper end of connector (39) is threaded with the lower end of supporting seat (34), the lower end of supporting seat (34) is fixed with target plate (40), be provided with nozzle (41) in the connector (39), nozzle (41) is corresponding with target plate (40), lower contact (42) is threaded with the lower end of connector (39), have inlet opening (38) in the lower contact (42), have fluid hole (44) on the supporting seat (34), fluid hole (44) supporting seat of both sides (34) up and down is provided with O RunddichtringO (37).
2, polymer flooding depositing well downhole polymer molecular weight according to claim 1, flow control device is characterized in that pressure regulator (50) is made up of fishing rod (51), gland (52), stage clip (53), supporting seat (54), torsion spring (55), cam (56), camshaft (57), injection allocation core top (58), O RunddichtringO (59), interior annular relief groove seat (60), outer ring relief groove seat (61), afterbody O RunddichtringO (62); The lower end of fishing rod (51) is located in the upper end of supporting seat (54), gland (52) is set in the outside of fishing rod (51) and is threaded with the upper end of supporting seat (54), be provided with stage clip (53) between the slide (65) of fishing rod (51) and the gland (52), camshaft (57) is located on the supporting seat (54), cam (56) is located on the camshaft (57), also be provided with torsion spring (55) on the camshaft (57), the lower end of supporting seat (54) is threaded with the upper end of outer ring relief groove seat (61), the outer wall of outer ring relief groove seat (61) is provided with cannelure (66), the top of interior annular relief groove seat (60) is connected with the lower thread of injection allocation core top (58), interior annular relief groove seat (60) and injection allocation core top (58) are located in the cavity of being made up of supporting seat (54) and outer ring relief groove seat (61) (68), the outer wall of interior annular relief groove seat (60) is provided with cannelure (67), the bottom of supporting seat (54) has fluid hole (63), the bottom of outer ring relief groove seat (61) has inlet opening (64), fluid hole (63) supporting seat of both sides (54) up and down is provided with O RunddichtringO (59), and the bottom of outer ring relief groove seat (61) inlet opening (64) is provided with afterbody O RunddichtringO (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410043755 CN1289787C (en) | 2004-07-28 | 2004-07-28 | Apparatus for controlling polymer molecular weight and flow of multiple-layer separate filling into with polymer displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410043755 CN1289787C (en) | 2004-07-28 | 2004-07-28 | Apparatus for controlling polymer molecular weight and flow of multiple-layer separate filling into with polymer displacement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1598242A CN1598242A (en) | 2005-03-23 |
| CN1289787C true CN1289787C (en) | 2006-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410043755 Expired - Lifetime CN1289787C (en) | 2004-07-28 | 2004-07-28 | Apparatus for controlling polymer molecular weight and flow of multiple-layer separate filling into with polymer displacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1289787C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705812B (en) * | 2009-11-17 | 2013-01-23 | 中国海洋石油总公司 | Large-discharge single pipe layered polymer injection and injection allocation method and device |
| CN103089222B (en) * | 2013-02-27 | 2015-04-22 | 马中原 | Polymer injection device free from dropping and fishing |
| CN103277076B (en) * | 2013-06-09 | 2017-06-06 | 天津大学 | A kind of micropore high molecular polymer molecular-weight adjusting device |
| AU2013406219B2 (en) * | 2013-11-27 | 2016-07-21 | Landmark Graphics Corporation | Determining stresses in a pipe under non-uniform exterior loads |
| CN106545320A (en) * | 2016-11-04 | 2017-03-29 | 中国石油天然气股份有限公司 | Layered injection quantity and layered molecular weight separate injection process for chemical well separate injection well |
| CN108119111B (en) * | 2017-11-24 | 2020-06-23 | 中国石油天然气股份有限公司 | Chemical flooding separated injection well ground molecular weight adjusting device |
| CN110374564B (en) * | 2019-07-25 | 2021-08-17 | 东北石油大学 | Pressure dividing device capable of measuring and adjusting pressure and viscosity in real time and measuring method thereof |
| CN111485862B (en) * | 2019-12-19 | 2022-06-03 | 中国石油天然气股份有限公司 | Three kinds of oil reservoir chemical flooding low-injection-quantity high-throttling low-loss layered injection device |
| CN111411925A (en) * | 2020-03-25 | 2020-07-14 | 中国石油天然气股份有限公司 | Adjustable blanking plug of chemical flooding separate injection well |
-
2004
- 2004-07-28 CN CN 200410043755 patent/CN1289787C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1598242A (en) | 2005-03-23 |
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Effective date of registration: 20200927 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: PetroChina Company Limited Patentee after: Daqing Oilfield Co.,Ltd. Address before: Heilongjiang Province, Daqing City Ranghulu District 163513 Patentee before: Daqing Oilfield Co.,Ltd. |