CN102747993B - Liquid foaming agent injection method - Google Patents
Liquid foaming agent injection method Download PDFInfo
- Publication number
- CN102747993B CN102747993B CN201210215258.4A CN201210215258A CN102747993B CN 102747993 B CN102747993 B CN 102747993B CN 201210215258 A CN201210215258 A CN 201210215258A CN 102747993 B CN102747993 B CN 102747993B
- Authority
- CN
- China
- Prior art keywords
- short circuit
- frother
- foaming agent
- porous plate
- packer
- 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.)
- Active
Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a liquid foaming agent injection method, belonging to the field of natural gas exploitation. The method comprises the following steps: (1) mounting a packer at a pipe shoe of an oil pipe to separate the oil sleeve annulus and the well bottom; (2) mounting a short coupling on the upper part of the packer, wherein the side surface of the short coupling is provided with a foaming agent channel which communicates the oil sleeve annulus with the lower part of the short coupling, and the lower part of the short coupling is connected with capillaries and communicated to an accumulated liquid on the middle lower part of the well bottom all along; (3) injecting the foaming agent from a well mouth oil sleeve annulus gate to the oil sleeve annulus, wherein the foaming agent resides and gathers at the oil sleeve annulus on the upper part of the packer, and enters the accumulated liquid through the foaming agent channel of the short coupling and the capillaries on the lower part; and (4) mixing natural gas and the foaming agent solution, wherein the mixture passes through a torsional porous plate at the center of the short coupling, enters the oil pipe on the upper part, and is finally discharged. The invention enhances the utilization ratio of the foaming agent, the mixing degree of the foaming agent with the well bottom accumulated liquid, and the foaming efficiency, reduces the use amount of capillaries, and lowers the cost.
Description
Technical field
The present invention relates to a kind of technology of gas recovery by foam drainage of natural gas extraction field, particularly a kind of liquid blowing agents method for implanting.
Background technology
In natural gas extraction, after having Gas Reservoirs water outlet, hydrops can be formed in shaft bottom gradually, have a strong impact on the production capacity of natural gas.Technology of gas recovery by foam drainage is by adding frother in the wellbore, makes natural gas and shaft bottom hydrops form foam, utilizes foam to be discharged by pit shaft hydrops, gas well is resumed production and extends campaign, thus reach the object improving gas reservoir ultimate recovery.Frother is generally that screen from existing commercially available frother, concrete grammar and standard can see petroleum industry standard SY/T 6465-2000 " foam drainage gas recovery frother evaluation methods " according to conditions such as gas well fluid properties and temperature.Frother is divided into solid-state frother and liquid blowing agents two type, and solid-state frother is generally directly dropped into by well head; The method for implanting of liquid blowing agents mainly contains 2 kinds: one is directly injected by frother from proof wellhead oil casing annular space or oil pipe, allows it mix with shaft bottom hydrops and natural gas phase thus to produce foam.The advantage of this method is: frother injects simple, does not need unnecessary uphole equipment, injects cost low; But shortcoming also clearly: frother generally arrives tubing shoe place and namely mixes with shaft bottom hydrops and produce foam and discharge, fully can not mix with shaft bottom hydrops, utilization rate is lower, there is certain requirement to gas well yield simultaneously, namely when output is too low, gas flow rate is slower, enough foams cannot be produced, produce foam efficiency lower.Another frother method for implanting is capillary tube injection method, and this method from well head, enters a capillary until shaft bottom, is injected into the hydrops of shaft bottom by frother from well head by capillary tube.The advantage of this method is: frother can be made well to be injected into shaft bottom thus better mix with shaft bottom hydrops, improves frother utilization rate and drainage effect; Its shortcoming is that capillary tube use amount is large, causes high cost.
Although therefore respectively have advantage to solve above-mentioned two kinds of injection methods, the shortcoming existed is also comparatively obvious, uses and is all subject to a definite limitation.
Summary of the invention
Object of the present invention is exactly in view of the foregoing defects the prior art has, a kind of liquid blowing agents method for implanting be suitable in gas well foam drainage gas recovery is provided, improve the mixability of the utilization rate of frother and itself and shaft bottom hydrops, improve bubbling efficiency, capillary tube use amount can also be reduced, reduced cost simultaneously.
A kind of liquid blowing agents method for implanting is realized by following methods:
(1) at the pipe shoe place of oil pipe, packer is installed, makes oil jacket annular space and shaft bottom phase packing;
(2) on packer top, a short circuit is installed, short circuit side has frother passage to be communicated with short circuit bottom by oil jacket annular space, short circuit bottom is provided with capillary interface, capillary tube is arranged on short circuit lower interface place and is communicated in the hydrops of middle and lower part, shaft bottom always, short circuit center is provided with torsional mode porous plate, and is communicated with oil pipe;
(3) drop into frother from frother inlet to oil jacket annular space, frother retains gathering at the oil jacket annular space place on packer top, enters in the hydrops in shaft bottom by the frother passage of short circuit and the capillary tube of bottom;
(4) natural gas of stratum output mixes with foaming agent solution, and through the torsional mode porous plate at short circuit center, gas-liquid fully mixes, and produces all even abundant foam, then enters top oil pipe, finally discharge.
Above-mentioned short circuit is made up of box screw thread, short circuit top connection, short circuit lower house, torsional mode porous plate shell, capillary interface, pin thread screw thread, frother passage, frother entrance, torsional mode porous plate, the upper and lower two ends of described short circuit are respectively equipped with box screw thread and pin thread screw thread, the bottom sides of short circuit lower house is provided with frother entrance and frother passage, and the bottom of frother passage is provided with capillary interface and can connects capillary tube; Short circuit inside is provided with torsional mode porous plate, and for improving bubbling efficiency, the top of torsional mode porous plate is communicated with oil pipe, and bottom can be communicated with shaft bottom through packer, and torsional mode porous plate is fixed by torsional mode porous plate shell.
The invention has the beneficial effects as follows: by middle and lower part at the bottom of direct for frother Injection Well, improve the utilization rate of frother and itself and the mixability of shaft bottom hydrops, improve bubbling efficiency, simultaneously minimizing capillary tube use amount, reduced cost.
Accompanying drawing explanation
Accompanying drawing 1 is tubular column structure schematic diagram of the present invention;
Accompanying drawing 2 is structure charts of short circuit of the present invention;
In upper figure: 1-frother inlet, 2-oil pipe, 3-sleeve pipe, 4-capillary tube, 5-packer, 6-short circuit, 7-oil jacket annular space, 8-stratum, 9-shaft bottom; 6.1-box screw thread, the top connection of 6.2-short circuit, 6.3-short circuit lower house, 6.4-torsional mode porous plate shell, 6.5-capillary interface, 6.6-pin thread screw thread, 6.7-frother passage, 6.8-frother entrance, 6.9-torsional mode porous plate.
Detailed description of the invention
By reference to the accompanying drawings 1 and Fig. 2, the invention will be further described:
A kind of liquid blowing agents method for implanting provided by the invention is realized by following methods:
(1) at the pipe shoe place of oil pipe 2, packer 5 is installed, makes oil jacket annular space 7 and shaft bottom 9 phase packing;
(2) on packer 5 top, a short circuit 6 is installed, short circuit side has frother passage to be communicated with short circuit bottom by oil jacket annular space, short circuit bottom is provided with capillary interface, capillary tube 4 is arranged on short circuit 6 lower interface place and is communicated in the hydrops of middle and lower part, shaft bottom 9 always, short circuit center is provided with torsional mode porous plate, and is communicated with oil pipe 2;
(3) from frother inlet 1(i.e. proof wellhead oil casing annular space gate) drop into frother to oil jacket annular space 7, frother retains gathering at oil jacket annular space 7 place on packer 5 top, enters in the hydrops in shaft bottom 9 by the frother passage of short circuit 6 and the capillary tube 4 of bottom;
(4) natural gas of stratum 8 output mixes with foaming agent solution, and through the torsional mode porous plate at short circuit 6 center, gas-liquid fully mixes, and produces all even abundant foam, then enters top oil pipe 2, finally discharge.
Above-mentioned short circuit is made up of box screw thread 6.1, short circuit top connection 6.2, short circuit lower house 6.3, torsional mode porous plate shell 6.4, capillary interface 6.5, pin thread screw thread 6.6, frother passage 6.7, frother entrance 6.8, torsional mode porous plate 6.9, the upper and lower two ends of described short circuit are respectively equipped with box screw thread 6.1 and pin thread screw thread 6.6, the bottom sides of short circuit lower house 6.3 is provided with frother entrance 6.8 and frother passage 6.7, and the bottom of frother passage 6.7 is provided with capillary interface 6.5 and can connects capillary tube; Described short circuit inside is provided with torsional mode porous plate 6.9, and it act as raising bubbling efficiency, and the top of torsional mode porous plate 6.9 is communicated with oil pipe, and bottom can be communicated with shaft bottom through packer, and torsional mode porous plate 6.9 is fixed by torsional mode porous plate shell 6.4.
Its course of work is as follows:
Install short circuit 6 in oil pipe 2 lower end, install packer 5 below short circuit, pit shaft below packing oil jacket annular space and oil pipe pipe shoe, capillary tube 4 is connected to the interface on short circuit 6, and one through in the hydrops of middle and lower part, shaft bottom.Existing commercially available liquid blowing agents injects from frother inlet 1, flow on packer 5 along the annular space between oil pipe 2 and sleeve pipe 3, be gathered in around short circuit 6, frother passage 6.7 is entered from frother entrance 6.8, through capillary interface 6.5, enter in the hydrops of middle and lower part, shaft bottom 9 along capillary tube 4, foaming agent solution is thoroughly mixed to form with hydrops, the natural gas of stratum 8 output and foaming agent solution, the foam producing evenly, enrich fully is mixed through torsional mode porous plate 6.9 gas-liquid, enter top oil pipe 2 again, finally discharge pit shaft.
Claims (1)
1. a liquid blowing agents method for implanting, is characterized in that being realized by following methods:
(1) at the pipe shoe place of oil pipe, packer is installed, makes oil jacket annular space and shaft bottom phase packing;
(2) on packer top, a short circuit is installed, short circuit side has frother passage to be communicated with short circuit bottom by oil jacket annular space, short circuit bottom is provided with capillary interface, capillary tube is arranged on short circuit lower interface place and is communicated in the hydrops of middle and lower part, shaft bottom always, short circuit center is provided with torsional mode porous plate, and is communicated with oil pipe;
(3) drop into frother from frother inlet to oil jacket annular space, frother retains gathering at the oil jacket annular space place on packer top, enters in the hydrops in shaft bottom by the frother passage of short circuit and the capillary tube of bottom;
(4) natural gas of stratum output mixes with foaming agent solution, and through the torsional mode porous plate at short circuit center, gas-liquid fully mixes, and produces all even abundant foam, then enters top oil pipe, finally discharge;
Above-mentioned short circuit is by box screw thread (6.1), short circuit top connection (6.2), short circuit lower house (6.3), torsional mode porous plate shell (6.4), capillary interface (6.5), pin thread screw thread (6.6), frother passage (6.7), frother entrance (6.8), torsional mode porous plate (6.9) forms, the upper and lower two ends of described short circuit are respectively equipped with box screw thread (6.1) and pin thread screw thread (6.6), the bottom sides of short circuit lower house (6.3) is provided with frother entrance (6.8) and frother passage (6.7), the bottom of frother passage (6.7) is provided with capillary interface (6.5) and can connects capillary tube, short circuit inside is provided with torsional mode porous plate (6.9), for improving bubbling efficiency, the top of torsional mode porous plate (6.9) is communicated with oil pipe, and bottom can be communicated with shaft bottom through packer, and torsional mode porous plate (6.9) is fixed by torsional mode porous plate shell (6.4),
During use, in oil pipe (2) lower end, short circuit (6) is installed, packer (5) is installed below short circuit, pit shaft below packing oil jacket annular space and oil pipe pipe shoe, capillary tube (4) is connected to the interface on short circuit (6), and one through in the hydrops of middle and lower part, shaft bottom, liquid blowing agents injects from frother inlet (1), flow on packer (5) along the annular space between oil pipe (2) and sleeve pipe (3), be gathered in short circuit (6) around, frother passage (6.7) is entered from frother entrance (6.8), through capillary interface (6.5), enter in the hydrops of shaft bottom (9) middle and lower part along capillary tube (4), foaming agent solution is thoroughly mixed to form with hydrops, the natural gas of stratum (8) output and foaming agent solution, generation foam is fully mixed through torsional mode porous plate (6.9) gas-liquid, enter top oil pipe (2) again, finally discharge pit shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210215258.4A CN102747993B (en) | 2012-06-27 | 2012-06-27 | Liquid foaming agent injection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210215258.4A CN102747993B (en) | 2012-06-27 | 2012-06-27 | Liquid foaming agent injection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102747993A CN102747993A (en) | 2012-10-24 |
| CN102747993B true CN102747993B (en) | 2015-01-28 |
Family
ID=47028448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210215258.4A Active CN102747993B (en) | 2012-06-27 | 2012-06-27 | Liquid foaming agent injection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102747993B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843621A (en) * | 2015-03-26 | 2015-08-19 | 西南石油大学 | Gas well oil jacket annular protecting fluid replacement device and method thereof |
| CN106917624A (en) * | 2015-12-25 | 2017-07-04 | 甘德顺 | Shaft bottom, the determination of gas pipeline hydrops amount, foaming agent supply control system and method |
| CN105443070B (en) * | 2015-12-30 | 2018-08-14 | 中国石油天然气股份有限公司 | Packer with gas well foam discharging agent filling device |
| CN106050199B (en) * | 2016-07-29 | 2021-01-05 | 南充西南石油大学设计研究院有限责任公司 | Comprehensive drainage gas production device and method |
| CN106050198B (en) * | 2016-07-29 | 2021-01-29 | 南充西南石油大学设计研究院有限责任公司 | Comprehensive drainage gas production system for low-pressure low-yield well |
| CN106499347B (en) * | 2016-10-28 | 2018-11-16 | 中国石油天然气股份有限公司 | Application method of oil production string |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8600316A (en) * | 1986-02-10 | 1987-09-01 | Shell Int Research | Injecting e.g. steam at selected level into oil-bearing formation - via tube string, injecting viscous foam in gravel packing outside perforated tube around string and placing seal on string above level |
| CN1648405A (en) * | 2004-12-22 | 2005-08-03 | 西南石油学院 | Injecting air boosting oil production and liquid discharging gas producing device and method |
| CN1890453A (en) * | 2003-11-07 | 2007-01-03 | 国际壳牌研究有限公司 | Method and system for injecting a treatment fluid into a well |
| CN201236686Y (en) * | 2008-04-16 | 2009-05-13 | 大庆油田有限责任公司 | Foam generator with adjustable pore space medium |
| CN102472089A (en) * | 2009-06-29 | 2012-05-23 | 国际壳牌研究有限公司 | System and method for intermittent gas lift |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7059411B2 (en) * | 2003-08-29 | 2006-06-13 | Kirby Hayes Incorporated | Process of using a propellant treatment and continuous foam removal of well debris and apparatus therefore |
-
2012
- 2012-06-27 CN CN201210215258.4A patent/CN102747993B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8600316A (en) * | 1986-02-10 | 1987-09-01 | Shell Int Research | Injecting e.g. steam at selected level into oil-bearing formation - via tube string, injecting viscous foam in gravel packing outside perforated tube around string and placing seal on string above level |
| CN1890453A (en) * | 2003-11-07 | 2007-01-03 | 国际壳牌研究有限公司 | Method and system for injecting a treatment fluid into a well |
| CN1648405A (en) * | 2004-12-22 | 2005-08-03 | 西南石油学院 | Injecting air boosting oil production and liquid discharging gas producing device and method |
| CN201236686Y (en) * | 2008-04-16 | 2009-05-13 | 大庆油田有限责任公司 | Foam generator with adjustable pore space medium |
| CN102472089A (en) * | 2009-06-29 | 2012-05-23 | 国际壳牌研究有限公司 | System and method for intermittent gas lift |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102747993A (en) | 2012-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102747993B (en) | Liquid foaming agent injection method | |
| CN102926770B (en) | Underground draining and grouting process in thin bedrock and thick loose sand layer rich water areas | |
| CN102094612B (en) | Active water fracturing technology of coal-bed gas well | |
| CN204041022U (en) | A kind of twofold whirl water pumping gas production downhole tool | |
| CN104179485B (en) | Cementation and fracture technique string | |
| CN105178859A (en) | Full-well-section self-suction reverse circulation gas drilling system for oil and gas drilling | |
| CN207348834U (en) | One kind extracts and the compound gas production system of foaming water discharge | |
| CN203285416U (en) | Downhole oil-water separation device of double electric submersible pump | |
| CN108019190A (en) | A kind of totally-enclosed mixes defeated decompression circulation gas lift system | |
| CN103334709B (en) | A kind of casing annulus gas injection technology | |
| CN205036295U (en) | Full well section self-suction type reverse circulation gas drilling system | |
| CN207750066U (en) | A kind of totally-enclosed mixes defeated decompression cycle gas lift system | |
| CN101936142A (en) | Aerated underbalanced drilling method for coal-bed gas | |
| CN110761743A (en) | Thick oil and thin oil mixed gas lift process pipe column and implementation method | |
| CN201705276U (en) | Well completion and flow string of horizontal well | |
| CN105370256A (en) | Method for increasing wetting radius of high-pressure water injection of low-air-permeability coal seams through sectioned pre-splitting | |
| CN105178897A (en) | Gas drilling ground manifold connection structure | |
| CN105649578A (en) | Vertical-well double-layer partial-pressure commingling method and device for coalbed methane | |
| CN201041023Y (en) | Gas-liquid mixed injection method liquid level-lowering induced spraying construction device | |
| CN205036331U (en) | Reverse circulation gas drilling tool combined structure | |
| CN105257256B (en) | Underground gas production tubing string and gas production method | |
| CN201738822U (en) | String for upper horizontal well cementation and lower screen pipe gravel pack completion | |
| CN203239303U (en) | Exploitation device for injection and production in the same well | |
| CN205036327U (en) | Gas drilling ground manifold connecting structure | |
| CN102877813B (en) | Half way inflation cementing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20121024 Assignee: DONGYING HEHUI PETROCHEMICAL TECHNOLOGY CO., LTD. Assignor: China Petroleum University (East China) Contract record no.: 2019370010014 Denomination of invention: Liquid foaming agent injection method Granted publication date: 20150128 License type: Common License Record date: 20190718 |