CN109723409A - A kind of underground gas-liquid separation lifting technology tubing string - Google Patents
A kind of underground gas-liquid separation lifting technology tubing string Download PDFInfo
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- CN109723409A CN109723409A CN201811535685.4A CN201811535685A CN109723409A CN 109723409 A CN109723409 A CN 109723409A CN 201811535685 A CN201811535685 A CN 201811535685A CN 109723409 A CN109723409 A CN 109723409A
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Abstract
The invention belongs to oilfield exploitation technical fields, disclose a kind of underground gas-liquid separation lifting technology tubing string, including be arranged in production casing adopt liquid casing, storm valve, insulated liquid device, gas production oil pipe is located connector, gas production oil pipe, cable-passing packer, adopt liquid oil pipe, adopt liquid oil pipe be located connector, speed gas production oil pipe, Y-shaped connector, insertion sealing, seating nipple, regulate and control cable, gas circuit regulating device, power cable, electric pump, pump condition, gas-liquid separator, top packer.The present invention establishes gas phase and liquid phase independent flow channels, effectively avoid the secondary hydrops risk of gas channels and fluid path fluid to the lifting inhibiting effect of gas circuit fluid, and safe containment device is provided on three independent flow channels established, it can be ensured that offshore production operation safety；, job stability height convenient with job execution handles liquid measure and handles the features such as large-minded, can be widely applied in the lifting technology of offshore oilfield high gas-liquid ratio oil well and water production hydrops gas well.
Description
Technical field
The present invention relates to oilfield exploitation technical fields, in particular to a kind of novel underground gas-liquid separation lifting
Process pipe string.
Background technique
It is low that offshore oilfield high gas-liquid ratio oil well (Gas content > 60%) faces conventional electric pump well lifting efficiency, occurs when serious
" gas lock ", or even influence the problems such as oil well normally produces.And offshore gas well can face wellbore effusion in exploitation different phase and show
As when gas well enters the production middle and later periods, gas well gas production is reduced, and fluid-carrying capability decline, hydrops is all the more serious, such as takes not in time
Necessary drainage measure will lead to gas well water logging halt production.Common processing method has at present: bubble row, speed column, electric pump lift,
The technologies such as gas jet pump, gaslift, vortex effluent, efficient gas processor, gas separation great master, these technologies are to a certain degree
On solve the problems, such as part hydrops, but hole condition and big liquid measure gas well water pumping gas production of the prior art to gas content higher than 60% are still
There is not preferable solution.
For offshore oil and gas field exploitation, safe and reliable process pipe string is particularly important.Underground gas-liquid separation is lifted
Rising is a kind of novel underground gas-liquid processing mode suitable for high gas-liquid ratio oil well and water production gas well drain, and the prior art is given
Gas-liquid separator is mounted on electric pump suction inlet hereinafter, stratum production fluid realizes gas-liquid point by gas-liquid separator by offshore oilfield out
From.Liquid phase after separation passes through conventional electric pump lifting, and gas phase is lifted using itself gas energy self-spray, gas and liquid after separation
Body blends lifting on pump, and on the one hand which solves the problems, such as conventional electric pump not gasproof and downhole safety production, but at present
Process pipe string be all will cross pump liquid with separate rear gas by blend/injection in a manner of be lifted to well head again, and blending/injection
Artificial lifting way unavoidably cause the mutual inhibition of fluid path Yu gas circuit fluid, serious person can block the output of gas circuit fluid, from
And cause the failure of entire hoisting system.
Summary of the invention
The present invention is to solve height/superelevation void fraction oil well routine electric pump well is poor for applicability and water production hydrops gas well
The technical issues of continuous draining, provides a kind of safe and reliable underground gas-liquid separation lifting technology tubing string, process pipe string benefit
Gas phase and liquid phase independent flow channels are established with adopting liquid casing, adopting liquid oil pipe, gas production oil pipe and speed gas production oil pipe, is effectively avoided
The lifting inhibiting effect of the secondary hydrops risk of gas channels and fluid path fluid to gas circuit fluid, work convenient with job execution
The features such as stability is high, handles liquid measure and large-minded processing can be widely applied to offshore oilfield high gas-liquid ratio oil well and produce water greatly
In the lifting technology for measuring hydrops gas well.
In order to solve the above-mentioned technical problem, the present invention is achieved by technical solution below:
A kind of underground gas-liquid separation lifting technology tubing string, including production casing, the production casing, which is internally provided with, adopts liquid
Casing, the liquid inside pipe casing of adopting are provided with the gas production oil pipe, and the gas production oil pipe concatenation is equipped with storm valve and adopts
Gas and oil pipe is located connector；Gas production oil pipe upper end is connect with well head, and gas production oil pipe lower end is connect with speed gas production oil pipe；
The gas production oil pipe and the annular space adopted between liquid casing are equipped with and insulated liquid device, described to insulate liquid device position
It is located above connector in the gas production oil pipe, the gas production oil pipe is located connector and described insulated liquid device for setting；
It is described to adopt liquid lower end and connect with liquid oil pipe is adopted, it is described adopt liquid oil pipe concatenation and be equipped with to adopt liquid oil pipe and be located connect
Head；The annular space adopted between liquid oil pipe and production casing is equipped with cable-passing packer, the cable-passing packer position
It is located above connector in the liquid oil pipe of adopting, the liquid oil pipe of adopting is located connector for setting the cable-passing packer；
The liquid oil pipe of adopting is internally provided with speed gas production oil pipe, the speed gas production oil pipe upper end and the gas production oil pipe
Connection, the speed gas production oil pipe lower end pass through Y-shaped connector and are connected to gas circuit regulating device；
The first port on the Y-shaped connector top is connect with the liquid oil pipe of adopting, and the second port of the Y-shaped connector lower part is successively
It is connected with electric pump and pump condition, described adopt between liquid oil pipe and the production casing is arranged in the electric pump and the pump condition
In annular space, and the electric pump upper end passes through the Y-shaped connector and the annular space adopted between liquid oil pipe and the speed gas production oil pipe
It is interconnected；
The speed gas production oil pipe lower end passes through the third port of the Y-shaped connector lower part；The third end of the Y-shaped connector lower part
Mouthful connection seating nipple is equipped with insertion sealing in the seating nipple, and the insertion is sealed to the speed gas production oil pipe and the Y
Annular space between the third port of connector lower part is sealed；
Gas circuit regulating device upper end and the insertion are tightly connected, and are connected with the speed gas production oil pipe；Institute
It states gas circuit regulating device lower part to connect with gas-liquid separator, under the gas outlet of the gas-liquid separator and the gas circuit regulating device
End is connected, and the liquid outlet of the gas-liquid separator adopts the annular space between liquid oil pipe and the production casing and be connected with described.
The electric pump and the pump condition are located at seating nipple position below.
The gas-liquid separator is located above top packer.
The beneficial effects of the present invention are:
(1) gas-liquid separation lifting technology tubing string in underground of the invention, using adopt liquid casing, adopt liquid oil pipe, gas production oil pipe and
Speed gas production oil pipe establishes gas phase and liquid phase independent flow channels, on the one hand effectively avoids the secondary hydrops risk of gas channels, separately
On the one hand avoid fluid path fluid to the lifting inhibiting effect of gas circuit fluid.
(2) gas-liquid separation lifting technology tubing string in underground of the invention, processing liquid measure can reach 200m3/d, widened routine
Electric pump application range in the hole condition of height/superelevation void fraction oil well and water production hydrops Gas Well Liquid Continuous Withdrawal.
(3) gas-liquid separation lifting technology tubing string in underground of the invention, operation embodiment is mature, greatly reduces operation
And operation risk.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of underground gas-liquid separation lifting technology tubing string provided by the present invention.
Attached drawing mark: 1, production casing；2, liquid casing is adopted；3, storm valve；4, liquid device was insulated；5, gas production oil pipe
It is located connector；6, gas production oil pipe；7, cable-passing packer；8, liquid oil pipe is adopted；9, it adopts liquid oil pipe and is located connector；10, speed gas production
Oil pipe；11, Y-shaped connector；12, insertion sealing；13, seating nipple；14, regulate and control cable；15, gas circuit regulating device；16, power cable；
17, electric pump；18, pump condition；19, liquid outlet；20, gas outlet；21, gas-liquid separator；22, top packer.
Specific embodiment
For that can further appreciate that summary of the invention of the invention, feature and effect, the following examples are hereby given, and cooperates attached drawing
Detailed description are as follows:
As shown in Figure 1, the tubing string includes being arranged in life the present invention provides a kind of underground gas-liquid separation lifting technology tubing string
Produce casing 1 in adopt liquid casing 2, storm valve 3, insulated liquid device 4, gas production oil pipe is located connector 5, gas production oil pipe 6, mistake
Cable packer 7, adopt liquid oil pipe 8, adopt liquid oil pipe be located connector 9, speed gas production oil pipe 10, Y-shaped connector 11, insertion sealing 12, work
Make cylinder 13, regulation cable 14, gas circuit regulating device 15, power cable 16, electric pump 17, pump condition 18, liquid outlet 19, gas outlet
20, gas-liquid separator 21, top packer 22.
It adopts liquid casing 2 to be arranged in production casing 1, production casing 1 and adopts 2 upper end of liquid casing and hang on oil jacket pipe hanger.
2 lower end of liquid casing is adopted to connect by variable diameter button with liquid oil pipe 8 is adopted.
6 upper end of gas production oil pipe is connect with well head, and 6 lower end of gas production oil pipe is connect with speed gas production oil pipe 10.On gas production oil pipe 6
Portion's configuration is equipped with storm valve 3, and storm valve 3 can guarantee that gas channel effectively insulated, it is ensured that operation on the sea safety.It adopts
6 lower part of gas and oil pipe configuration installation gas production oil pipe is located connector 5, and gas production oil pipe is located connector 5 and insulated liquid device 4 for setting.
Gas production oil pipe 6, storm valve 3, gas production oil pipe, which are located connector 5 and are arranged at, to be adopted in liquid casing 2.Gas production oil pipe 6 and adopt liquid set
Annular space between pipe 2, which is equipped with, insulated liquid device 4, it is ensured that annular space effectively insulates, and insulated liquid device 4 and is located at
Gas production oil pipe is located 5 top of connector.
The setting of speed gas production oil pipe 10 is being adopted inside liquid oil pipe 8, and 10 upper end of speed gas production oil pipe is connect with gas production oil pipe 6,
10 lower end of speed gas production oil pipe passes through Y-shaped connector 11 and is connected to gas circuit regulating device 15.
It adopts 8 upper end of liquid oil pipe to connect with liquid casing 2 is adopted, the first port for adopting 8 lower end of liquid oil pipe and 11 top of Y-shaped connector connects
It connects.It adopts the configuration of liquid oil pipe 8 and is equipped with and adopt liquid oil pipe and be located connector 9, adopt liquid oil pipe and be located connector 9 for setting cable-passing packer
7.It adopts the annular space between liquid oil pipe 8 and production casing 1 and is equipped with and set cable-passing packer 7, it is ensured that annular space has
Effect packing sets cable-passing packer 7 positioned at liquid oil pipe is adopted and is located 9 top of connector.
The second port of 11 lower part of Y-shaped connector connects electric pump 17, and 17 lower part of electric pump connects pump condition 18.Electric pump 17 and pump condition
18 are arranged in the annular space adopted between liquid oil pipe 8 and production casing 1, and 17 upper end of electric pump passes through the second end of 11 lower part of Y-shaped connector
Mouth and the annular space adopted between liquid oil pipe 8 and speed gas production oil pipe 10 are interconnected.
10 lower end of speed gas production oil pipe passes through the third port of 11 lower part of Y-shaped connector and is connected to gas circuit regulating device 15.Gas
Road regulating device 15 carries out underground real-time monitoring by regulation cable 14.The third port of 11 lower part of Y-shaped connector connects seating nipple 13,
Insertion sealing 12 is mounted in seating nipple 13, and to the ring between the third port of 11 lower part of speed gas production oil pipe 10 and Y-shaped connector
Shape space is sealed.Electric pump 17 and pump condition 18 are located at the position below of seating nipple 13.Power cable 16 is used for electric pump 17
Electric power is provided with pump condition 18.
15 top of gas circuit regulating device is connect with insertion sealing 12, and is connected with speed gas production oil pipe 10.Gas circuit is adjusted
15 lower part of device is connect with gas-liquid separator 21, and gas-liquid separator 21 is located at 22 top of top packer.Gas-liquid separator 21
Gas outlet 20 is connected with 15 lower part of gas circuit regulating device, the liquid outlet 19 of gas-liquid separator 21 and adopt liquid oil pipe 8 and production cover
Annular space between pipe 1 is connected.
Gas-liquid separation lifting technology tubing string in underground of the invention, the course of work are as follows:
It 1) include top packer 22, pipe with holes and sand preventing tool in tripping in oil layer section.
2) tripping in routine electric motor drive oil pump system tubing string: including being sequentially connected tripping in Separate System of Water-jet 21, gas circuit regulating device 15,
Pump condition 18, electric pump 17, Y-shaped connector 11 adopt liquid oil pipe 8, adopt liquid oil pipe and are located connector 9, power cable 16, regulation cable 14, mistake
Cable packer 7 and adopt liquid casing 2.
3) it suppresses and sets cable-passing packer 7.
4) tripping in gas production tubing string: including successively running speed gas production oil pipe 10, gas production oil pipe 6, gas production oil pipe is located connector
5, insulated liquid device 4 and storm valve 3.
5) it suppresses to set and insulated liquid device 4.
6) electric pump unit production is opened, after stratum production fluid enters gas-liquid separation 21 by top packer 22, after separation
Fluid path fluid is flowed out from liquid outlet 19, along speed gas production oil pipe 10 and is adopted between liquid oil pipe 8 by the pressurization lifting of electric pump 17
Annular space lifts upwards, and fluid path fluid flows upward to the annular space adopted between liquid casing 2 and gas production oil pipe 6 continues up
Lifting is until well head.Gas circuit gas is flowed out from gas outlet 20 after separation, passes through speed gas production oil pipe 10, gas production oil pipe 6 itself energy
Amount is lifted to well head, to realize that underground gas-liquid point is adopted.
A kind of underground gas-liquid separation lifting technology tubing string that the present invention designs, is designed by structure, by gas-liquid separator 21
Gas outlet 20 be sequentially communicated gas circuit regulating device 15, speed gas production oil pipe 10, gas production oil pipe 6 formed gas phase flow channel, will
The liquid outlet 19 of gas-liquid separator 21 is sequentially communicated annular space, the electric pump 17, Y-shaped connector adopted between liquid oil pipe 8 and production casing 1
11, speed gas production oil pipe 10 and annular space between liquid oil pipe 8, gas production oil pipe 6 is adopted and adopts the annular space between liquid casing 2
Liquid phase flow channel is formed, and cable-passing packer 7 is arranged to the annular space adopted between liquid oil pipe 8 and production casing 1, it is right
Gas production oil pipe 6 and the annular space setting adopted between liquid casing 2 insulated liquid device 4, and storm valve is arranged to gas production oil pipe 6
3, three sets of downhole safety packing devices of three flow channels and corresponding setting are consequently formed, it is ensured that the flowing space is effectively sealed
Every, it is ensured that operation on the sea safety.Further, the gas phase flowing of speed gas production oil pipe 10 established by the present invention, gas production oil pipe 6
Channel is totally independent of liquid phase flow channel, and gas and liquid are not related to blending lifting, therefore can be improved that gas well is critical to take liquid gas
Amount, gas full utilization self-energy are lifted to well head, effectively avoid the secondary hydrops risk of gas channels, effectively avoid fluid path stream
Lifting inhibiting effect of the body to gas circuit fluid.
Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the invention is not limited to upper
The specific embodiment stated, the above mentioned embodiment is only schematical, be not it is restrictive, this field it is common
Technical staff under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, may be used also
By make it is many in the form of specific transformation, within these are all belonged to the scope of protection of the present invention.
Claims (3)
1. a kind of underground gas-liquid separation lifting technology tubing string, including production casing, which is characterized in that set inside the production casing
It is equipped with and adopts liquid casing, the liquid inside pipe casing of adopting is provided with the gas production oil pipe, and the gas production oil pipe concatenation is equipped with underground peace
Full valve and gas production oil pipe are located connector；Gas production oil pipe upper end is connect with well head, gas production oil pipe lower end and speed gas production
Oil pipe connection；The gas production oil pipe and the annular space adopted between liquid casing are equipped with and insulated liquid device, the packing
It crosses liquid device and is located at the gas production oil pipe and be located above connector, the gas production oil pipe is located connector and described insulated liquid for setting
Device；
It is described to adopt liquid lower end and connect with liquid oil pipe is adopted, it is described adopt liquid oil pipe concatenation and be equipped with adopt liquid oil pipe and be located connector；Institute
It states the annular space adopted between liquid oil pipe and production casing and cable-passing packer is installed, the cable-passing packer is located at described
It adopts liquid oil pipe to be located above connector, the liquid oil pipe of adopting is located connector for setting the cable-passing packer；
The liquid oil pipe of adopting is internally provided with speed gas production oil pipe, and the speed gas production oil pipe upper end and the gas production oil pipe connect
It connects, the speed gas production oil pipe lower end passes through Y-shaped connector and is connected to gas circuit regulating device；
The first port on the Y-shaped connector top is connect with the liquid oil pipe of adopting, and the second port of the Y-shaped connector lower part is sequentially connected
There are electric pump and pump condition, the annular space adopted between liquid oil pipe and the production casing is arranged in the electric pump and the pump condition
It is interior, and the electric pump upper end is mutual by the Y-shaped connector and the annular space adopted between liquid oil pipe and the speed gas production oil pipe
Connection；
The speed gas production oil pipe lower end passes through the third port of the Y-shaped connector lower part；The third port of the Y-shaped connector lower part connects
Seating nipple is connect, insertion sealing is installed, the insertion sealing is to the speed gas production oil pipe and the Y-shaped connector in the seating nipple
Annular space between the third port of lower part is sealed；
Gas circuit regulating device upper end and the insertion are tightly connected, and are connected with the speed gas production oil pipe；The gas
Road regulating device lower part is connect with gas-liquid separator, the gas outlet of the gas-liquid separator and gas circuit regulating device lower end phase
Connection, the liquid outlet of the gas-liquid separator adopt the annular space between liquid oil pipe and the production casing and are connected with described.
2. a kind of underground gas-liquid separation lifting technology tubing string according to claim 1, which is characterized in that the electric pump and institute
It states pump condition and is located at seating nipple position below.
3. a kind of underground gas-liquid separation lifting technology tubing string according to claim 1, which is characterized in that the gas-liquid separation
Device is located above top packer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811535685.4A CN109723409B (en) | 2018-12-14 | 2018-12-14 | Underground gas-liquid separation lifting process pipe column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811535685.4A CN109723409B (en) | 2018-12-14 | 2018-12-14 | Underground gas-liquid separation lifting process pipe column |
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| CN109723409A true CN109723409A (en) | 2019-05-07 |
| CN109723409B CN109723409B (en) | 2020-12-29 |
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| CN201811535685.4A Active CN109723409B (en) | 2018-12-14 | 2018-12-14 | Underground gas-liquid separation lifting process pipe column |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242257A (en) * | 2019-05-31 | 2019-09-17 | 中国海洋石油集团有限公司 | A kind of gas hydrates underground pilot production process pipe string |
| CN110284870A (en) * | 2019-07-11 | 2019-09-27 | 闫波 | A kind of underground gas-liquid suitable for gas well divides device for picking |
| CN110529082A (en) * | 2019-09-27 | 2019-12-03 | 中海石油(中国)有限公司上海分公司 | A kind of gas-liquid separation tubing string for offshore gas well liquid discharging gas producing |
| CN110617050A (en) * | 2019-10-15 | 2019-12-27 | 闫波 | Gas well underground gas-liquid separate production device |
| CN111005711A (en) * | 2019-11-19 | 2020-04-14 | 中国石油天然气股份有限公司 | Oil well underground oil-gas separation device and method |
| CN111502602A (en) * | 2020-04-23 | 2020-08-07 | 中国海洋石油集团有限公司 | Natural gas hydrate gas layer commingled production pipe column and method |
| CN113404468A (en) * | 2021-08-02 | 2021-09-17 | 西南石油大学 | Novel gas-liquid separate production pipe column for underground drainage and gas production of sulfur-containing gas well |
| CN114687705A (en) * | 2020-12-29 | 2022-07-01 | 中国石油化工股份有限公司 | Casing gas pressure reduction gas lift pipe column and using method thereof |
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| CN111005711A (en) * | 2019-11-19 | 2020-04-14 | 中国石油天然气股份有限公司 | Oil well underground oil-gas separation device and method |
| CN111502602A (en) * | 2020-04-23 | 2020-08-07 | 中国海洋石油集团有限公司 | Natural gas hydrate gas layer commingled production pipe column and method |
| CN114687705A (en) * | 2020-12-29 | 2022-07-01 | 中国石油化工股份有限公司 | Casing gas pressure reduction gas lift pipe column and using method thereof |
| CN113404468A (en) * | 2021-08-02 | 2021-09-17 | 西南石油大学 | Novel gas-liquid separate production pipe column for underground drainage and gas production of sulfur-containing gas well |
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Inventor after: Zheng Chunfeng Inventor after: Wang Lei Inventor after: Yang Wanyou Inventor after: Liu Min Inventor after: Cui Pengtao Inventor after: Shen Qiong Inventor after: Li Ang Inventor after: Zhang Fenghui Inventor after: Xue Dedong Inventor after: Ren Weina Inventor before: Zheng Chunfeng Inventor before: Wang Lei Inventor before: Yang Wanyou Inventor before: Liu Min Inventor before: Cui Pengtao Inventor before: Shen Qiong Inventor before: Li Ang Inventor before: Zhang Fenghui Inventor before: Xue Dedong Inventor before: Ren Weina |
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