CN104453813B - One kind controls foaming agent filling apparatus and its method using capillary tube check valve - Google Patents
One kind controls foaming agent filling apparatus and its method using capillary tube check valve Download PDFInfo
- Publication number
- CN104453813B CN104453813B CN201410662076.0A CN201410662076A CN104453813B CN 104453813 B CN104453813 B CN 104453813B CN 201410662076 A CN201410662076 A CN 201410662076A CN 104453813 B CN104453813 B CN 104453813B
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- CN
- China
- Prior art keywords
- check valve
- capillary tube
- gas
- downhole
- pressure
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- 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.)
- Expired - Fee Related
Links
- 239000004088 foaming agent Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 11
- 241000521257 Hydrops Species 0.000 claims abstract description 28
- 206010030113 Oedema Diseases 0.000 claims abstract description 28
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims description 7
- 238000005187 foaming Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims 1
- 210000005239 tubule Anatomy 0.000 claims 1
- 239000006260 foam Substances 0.000 abstract description 9
- 239000003795 chemical substances by application Substances 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
-
- 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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/05—Flapper valves
Landscapes
- 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)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The present invention relates to a kind of control foaming agent filling apparatus and method using capillary tube check valve, utilization capillary tube check valve control foaming agent filling apparatus therein include capillary tube, downhole check valve, fluid reservoir, gas control check valve, controller, pressure transducer, fluid reservoir is connected to the oil jacket annular space of gas well mouth device by pipeline, gas control check valve is set on the pipeline, capillary tube is hung in oil jacket annular space, gas well gas-bearing formation middle and lower part is arrived in the lower end of capillary tube, and a downhole check valve is installed in capillary tube lower end；Pressure transducer is installed in oil jacket annular space, pressure transducer connects controller, and controller connects gas control check valve, and the display device of controller is arranged on the instrumental panel that arrange on fluid reservoir.The present invention connects filling opportunity and the adding amount of downhole check valve control foam discharging agent using capillary tube, discharges hydrops and realizes gas well quantity-produced purpose.
Description
Technical field
The present invention relates to gas field development field, more particularly to a kind of utilization check valve automatically controls the side of foaming agent filling
Method, it is adaptable to oil pipe, the hydrops gas well of casing annulus connection, and in particular to one kind is added using capillary tube check valve control foaming agent
Dispensing device and method.
Background technology
There is hydrops in Wellbore of Gas Wells, undoubtedly affect which normally to produce, while polluting gas-bearing formation, further reduce gas well deliverability.
Therefore, during gas well liquid loading, hydrops is discharged in time, it is ensured that the continuous production capacity of gas well, most important.At present, draining is adopted
Gas method is numerous, the mainly foam drainage gas recovery being most widely used.Reason is that foam drainage gas recovery technological operation is simple
Convenient, with low cost, effect of increasing production is obvious.
Foam drainage gas recovery technique is implemented main automatic by bubble row's car infusion, compensator instillation, bubble rod row/ball at the scene
Periodically the various ways such as input are realized.These measures are required for artificially judging shaft bottom hydrops amount, estimate foam discharging agent adding amount, set
, there is certain uncertainty, there is certain blindness on filling opportunity and adding amount in filling interval of foam discharging agent/rod/ball etc..
Content of the invention
It is an object of the invention to provide a kind of control foaming agent filling apparatus, this utilization capillary using capillary tube check valve
Pipe check valve control foaming agent filling apparatus are used for solving existing on Wellbore of Gas Wells foaming agent filling opportunity and adding amount necessarily blind
The problem of mesh, it is a further object to provide this utilization capillary tube check valve controls the side of foaming agent filling apparatus
Method.
The technical solution adopted for the present invention to solve the technical problems is：This utilization capillary tube check valve controls foaming agent
Filling apparatus include that capillary tube, downhole check valve, fluid reservoir, gas control check valve, controller, pressure transducer, fluid reservoir pass through
Pipeline is connected to the oil jacket annular space of gas well mouth device, arranges in gas control check valve, oil jacket annular space and hang capillary tube on the pipeline,
Gas well gas-bearing formation middle and lower part is arrived in the lower end of capillary tube, and a downhole check valve is installed in capillary tube lower end；Pressure is installed in oil jacket annular space
Force transducer, pressure transducer connect controller, and controller connects gas control check valve, and the display device of controller is arranged on liquid storage
On the instrumental panel arranged on tank.
Above-mentioned utilization capillary tube check valve control foaming agent filling apparatus control foaming agent charging method：
During gas well liquid loading, downhole check valve two-way pressure is balanced, and downhole check valve is in long off state, when gas well bottom
After portion starts hydrops, base pressure gradually increases, after hydrops highly reaches some value, downhole check valve low pressure and its
After top pressure difference value is more than the setting pressure of downhole check valve, downhole check valve is opened, while pressure transducer is by now
Pressure signal sends controller to, and controller control gas control check valve is opened, and the foaming dosage of setting is passed through by fluid reservoir automatically
Capillary tube is filled into gas well oil jacket annular space bottom, and adding amount reaches gas control closed check valve after setting value, and hydrops and foaming agent are sent out
Well head is carried out by gas after raw reaction, downhole check valve pressure below reduces, and gradually maintains an equal level with top pressure, immediately down-hole list
Close to valve.
The invention has the advantages that：
The present invention connects filling opportunity and the adding amount of downhole check valve control foam discharging agent using capillary tube, and adding amount is thing
After first calculating and set, one-way on-off valve in the presence of the liquid-column height additonal pressure, so as to control foam discharging agent filling when
Machine and adding amount, discharge hydrops and realize gas well quantity-produced purpose.
Description of the drawings
Fig. 1 is the connection diagram of the present invention.
In figure：1. capillary tube, 2. downhole check valve, 3. fluid reservoir, 4. gas control check valve, 5. oil jacket annular space, 6. gas well well
Mouthful device, 7. instrumental panel.
Specific embodiment
The present invention is further illustrated below：
As shown in figure 1, this utilization capillary tube check valve control foaming agent filling apparatus include that capillary tube 1, down-hole is unidirectional
Valve 2, fluid reservoir 3, gas control check valve 4, controller, pressure transducer, fluid reservoir 3 are connected to gas well mouth device 6 by pipeline
Oil jacket annular space 5, gas control check valve 4 is set on the pipeline, in oil jacket annular space 5, capillary tube 1 is hung, the lower end of capillary tube 1 is arrived at
A downhole check valve 2 is installed in gas well gas-bearing formation middle and lower part, 1 lower end of capillary tube, and downhole check valve 2 is automatic under the conditions of certain pressure
Foaming agent is injected into shaft bottom by switch, capillary tube 1, realizes that foaming agent is filled；Pressure transducer, pressure are installed in oil jacket annular space 5
Sensor is arranged close at downhole check valve, and the installation of pressure transducer can be completed using known technology, pressure transducer
Connection controller, controller connection gas control check valve 4, the display device of controller is arranged on the instrumental panel 7 that arrange on fluid reservoir 3
On, realize that the setting and display on filling opportunity and adding amount, fluid reservoir 3 store a large amount of foaming agents, liquid storage realized by gas control check valve 4
3 automatic switch of tank, foaming agent flow out fluid reservoir 3.Gas control check valve 4 can also select other automatic control check valves.
Above-mentioned utilization capillary tube check valve control foaming agent filling apparatus control foaming agent charging method：
During gas well liquid loading, 2 two-way pressure of downhole check valve is balanced, and downhole check valve 2 works as gas well in long off state
After bottom starts hydrops, base pressure gradually increases, after hydrops highly reaches some value, 2 low pressure of downhole check valve
After setting pressure of the pressure difference value above which more than downhole check valve 2, downhole check valve 2 is opened, while pressure transducer will
Pressure signal now sends controller to, and controller control gas control check valve 4 is opened, the foaming that fluid reservoir 3 will be set automatically
Dosage is filled into 5 bottom of gas well oil jacket annular space by capillary tube 1, and after adding amount reaches setting value, gas control check valve 4 is closed, hydrops
Well head is carried out by gas after reacting with foaming agent, 2 pressure below of downhole check valve is reduced, gradually held with top pressure
Flat, downhole check valve 2 is closed immediately.
1）Foaming agent fills opportunity：
（1）
Wherein, pressure above P1 check valves；
P2 check valve pressure below；
Wellbore fluid density；
Liquid height in pit shaft.
2）Foaming agent adding amount is highly determined according to hydrops.
2 Opening pressure of downhole check valve is, it is known that operator are according to formula（1）Calculate hydrops height, hydrops amount, you can press
Foaming agent adding amount needed for calculating with the proportion relation of hydrops according to the foaming agent of filling, these can be in fluid reservoir 3
Instrumental panel 7 on determine and show.
The original state of the interior not hydrops of gas well：2 top pressure P1 of downhole check valve is maintained an equal level with pressure below P2, and down-hole is unidirectional
Valve 2 is closed.
Gas well starts hydrops：Hydrops height gradually increases, and downhole check valve pressure below P2 gradually increases, top pressure P1
Constant, P2-P1 pressure reduction gradually increases, a certain amount of when increasing to（Downhole check valve sets pressure）Afterwards, downhole check valve is opened, gas
Control check valve 4 is opened, and fluid reservoir instrument calculates the enough foaming agents for setting as the capillary tube 1 in oil jacket annular space flows through down-hole list
The injection well bottom to after valve 2.
End-state after hydrops is discharged in gas well：There is chemical reaction with foaming agent in hydrops, produce a large amount of foams, reduce
Fluid density, is taken out of well head by gas therewith.In gas well hydrops discharge after, downhole check valve pressure below P2 be reduced to upper
Square pressure P1 maintains an equal level, and downhole check valve 2 is closed.
Secret of the present invention is tested as follows：
If downhole check valve Opening pressure is 6MPa（Unidirectional valve opening pressure is by technical staff to gas well analysis, optimization
Obtain）, then hydrops height set is 500m, shaft bottom hydrops about 4m3.The foaming agent is 1 with hydrops proportioning：10, then need plus
Note foaming agent is defined as 0.4m3, instrumental panel shows and need to fill foaming agent 0.4m3, i.e. 400L.Downhole check valve 2 is opened, gas control list
Open to valve 4, foaming agent is slowly injected in oil jacket annular space.Adding amount to after 400L, close by gas control check valve 4, downhole check valve 2
Close.
Claims (1)
1. a kind of utilization capillary tube check valve controls the charging method of foaming agent filling apparatus, it is characterised in that：This utilization hair
Tubule check valve control foaming agent filling apparatus include capillary tube（1）, downhole check valve（2）, fluid reservoir（3）, gas control check valve
（4）, controller, pressure transducer, fluid reservoir（3）Gas well mouth device is connected to by pipeline（6）Oil jacket annular space（5）, should
Gas control check valve is set on pipeline（4）, oil jacket annular space（5）Interior suspension capillary tube（1）, capillary tube（1）Lower end arrive at gas well gas
Layer middle and lower part, capillary tube（1）Lower end is installed by one downhole check valve（2）；Oil jacket annular space（5）Interior installation pressure transducer, pressure
Sensor connects controller, and controller connects gas control check valve（4）, the display device of controller is arranged on fluid reservoir（3）On set
The instrumental panel that puts（7）On；
During gas well liquid loading, downhole check valve（2）Two-way pressure is balanced, downhole check valve（2）In long off state, work as gas well
After bottom starts hydrops, base pressure gradually increases, after hydrops highly reaches some value, downhole check valve（2）Press bottom
Power with its above pressure difference value be more than downhole check valve（2）Setting pressure after, downhole check valve（2）Open, while pressure is passed
Sensor sends pressure signal now to controller, and controller controls gas control check valve（4）Open, fluid reservoir（3）Automatically will
The foaming dosage of setting passes through capillary tube（1）It is filled into gas well oil jacket annular space（5）Bottom, adding amount reach gas control list after setting value
To valve（4）Closing, hydrops and foaming agent are carried out well head, downhole check valve by gas after reacting（2）Pressure below reduces,
Gradually with downhole check valve（2）Top pressure maintains an equal level, immediately downhole check valve（2）Close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410662076.0A CN104453813B (en) | 2014-11-19 | 2014-11-19 | One kind controls foaming agent filling apparatus and its method using capillary tube check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410662076.0A CN104453813B (en) | 2014-11-19 | 2014-11-19 | One kind controls foaming agent filling apparatus and its method using capillary tube check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104453813A CN104453813A (en) | 2015-03-25 |
| CN104453813B true CN104453813B (en) | 2017-03-15 |
Family
ID=52900488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410662076.0A Expired - Fee Related CN104453813B (en) | 2014-11-19 | 2014-11-19 | One kind controls foaming agent filling apparatus and its method using capillary tube check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104453813B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134150A (en) * | 2015-10-21 | 2015-12-09 | 中国石油化工股份有限公司 | Automatic filling system for gas well defoamer |
| CN109555508A (en) * | 2017-09-26 | 2019-04-02 | 中国石油化工股份有限公司 | A kind of foam discharging agent filling apparatus and its application method |
| CN110197040B (en) * | 2019-06-06 | 2023-04-07 | 东北石油大学 | Reynolds number-based annular pressure calculation method |
| CN113006753B (en) * | 2021-05-08 | 2023-04-07 | 中国石油天然气股份有限公司 | Method and equipment for filling foam drainage agent and foam drainage ball for equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201202446Y (en) * | 2008-04-29 | 2009-03-04 | 中国海洋石油总公司 | Prying type capillary steel tube liquor drainage gas production apparatus |
| CN201517413U (en) * | 2009-10-13 | 2010-06-30 | 中国石油天然气股份有限公司 | Gas well remote control automatic reagent feeding device |
| CN201705319U (en) * | 2010-06-21 | 2011-01-12 | 中国石油天然气股份有限公司 | Skid-mounted closed dosing device |
| CN202673264U (en) * | 2012-07-02 | 2013-01-16 | 许双龙 | Downhole automatic chemical dosing device for oil well |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7896071B2 (en) * | 2005-05-02 | 2011-03-01 | Shane Hinds | Method for continous downhole fluid release and well evaluation |
| US8251147B2 (en) * | 2005-06-08 | 2012-08-28 | Baker Hughes Incorporated | Method and apparatus for continuously injecting fluid in a wellbore while maintaining safety valve operation |
-
2014
- 2014-11-19 CN CN201410662076.0A patent/CN104453813B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201202446Y (en) * | 2008-04-29 | 2009-03-04 | 中国海洋石油总公司 | Prying type capillary steel tube liquor drainage gas production apparatus |
| CN201517413U (en) * | 2009-10-13 | 2010-06-30 | 中国石油天然气股份有限公司 | Gas well remote control automatic reagent feeding device |
| CN201705319U (en) * | 2010-06-21 | 2011-01-12 | 中国石油天然气股份有限公司 | Skid-mounted closed dosing device |
| CN202673264U (en) * | 2012-07-02 | 2013-01-16 | 许双龙 | Downhole automatic chemical dosing device for oil well |
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| Publication number | Publication date |
|---|---|
| CN104453813A (en) | 2015-03-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Huang Bin Inventor after: Feng Pengxin Inventor after: Fu Cheng Inventor after: Song Kaoping Inventor after: Zhang Weiwen Inventor after: Yang Xingzhou Inventor before: Feng Pengxin Inventor before: Huang Bin Inventor before: Fu Cheng Inventor before: Song Kaoping Inventor before: Liu Jinxiang Inventor before: Zhang Weiwen Inventor before: Yang Xingzhou |
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| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 |