CN108729884A - A kind of extracting device of oil and its application - Google Patents
A kind of extracting device of oil and its application Download PDFInfo
- Publication number
- CN108729884A CN108729884A CN201710262150.3A CN201710262150A CN108729884A CN 108729884 A CN108729884 A CN 108729884A CN 201710262150 A CN201710262150 A CN 201710262150A CN 108729884 A CN108729884 A CN 108729884A
- Authority
- CN
- China
- Prior art keywords
- oil
- oil pipe
- tube
- dual tubing
- tubing packing
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
Abstract
The invention discloses a kind of extracting device of oil and its applications, belong to oil recovery technique field.Described device includes：The first oil pipe and the second oil pipe being connected including dual tubing packing, with the dual tubing packing hang the fixed double tube of first oil pipe and second oil pipe upper end；First oil pipe includes the upper tube being connect with the dual tubing packing upper end and the lower tube that is connect with the dual tubing packing lower end, and the upper tube includes the pump group part for oil recovery, and the length of the lower tube enters oily area enough；The both ends of second oil pipe are hung respectively with the double tube and the dual tubing packing upper end is connect.The present invention forms oil channel by the first oil pipe, forms exhaust passage by the second oil pipe, is vented simultaneously by the second oil pipe during oil recovery, solves the problems such as has channeling, gas lock.
Description
Technical field
The present invention relates to oil recovery technique field, more particularly to a kind of extracting device of oil and its application.
Background technology
As oil field development enters the middle and later periods, oil well composite water cut rises, and the recovery ratio of water flooding has been approached
The limit, well water is up to 95% or more, but the recovery percent of reserves of recoverable reserves also has a large amount of surplus in reservoir still in reduced levels
Remaining crude oil can not be mined.Gas injection gravity flooding tertiary oil recovery technology is after filled drive for improving oil recovery factor again
Effective ways, refer to tilt, the higher stratum of permeability utilize oil gas gravitational differentiation in oil-bearing structure crestal gas injection
Pressure or partial pressure maintenance is kept to exploit crude oil.But gas, oil, water three-phase coexistence in oil recovery pit shaft, easily produce
Raw gas channeling phenomenon, makes extracting device of oil that gas lock occur in process of production, and gas lock refers to gas and is filled with pump work cylinder in extracting device of oil,
The access that crude oil enters pump is blocked, pump piston is only compressed and expanded to gas in up-down stroke, standing valve and trip
Dynamic valve cannot be opened, and at this moment oil well is not fuel-displaced.When build-up of fluid to a certain extent when, gas lock phenomenon will release；But work as liquid
When face is reduced to Pump Suction Nozzle, gas lock phenomenon can occur again.Therefore pit shaft during gas injection gravity flooding tertiary oil recovery how is solved
Has channeling effectively avoids the problem that the extracting device of oil of gas lock is this field research staff concern.
Extracting device of oil used at present is production tube, the oil extraction pump in production tube, is located at production tube outer wall
On packer, borehole pressure is isolated from the outside world, is driven to the piston of oil extraction pump by ground installation, in work by packer
Crude oil is lifted to ground under the up and down reciprocatingly effect of plug.Production tube can be multiple, such as patent document CN204754881U
A kind of two-tube gas well liquid loading tubing string side by side is disclosed, by the hanging of two-tube tubing hanger in casing, using dual tubing packing to set
Pipe is insulated, the tubing string may be implemented in initial productivity it is higher when, big little oil pipe produces simultaneously, when mid-term production capacity declines, big oil
Pipe individually produces, and after gas well water breakthrough, little oil pipe fluid-carrying capability is stronger, can individually take liquid.
In the implementation of the present invention, the inventor finds that the existing technology has at least the following problems：
In process of production due to pumpingh well, casing pressure is excessively high, and the hydrodynamic face of oil reservoir is forced to decline.When hydrodynamic face drops to pump
When suction inlet, gas is scurried into pump, and gas channeling phenomenon occurs, pump efficiency is made to reduce, and gas lock phenomenon occurs when serious, and oil well stops production, makes
The recovery ratio that oil recovery technique is driven at gas injection gravity is in a reduced levels.
Invention content
In order to solve the above problem of the prior art, an embodiment of the present invention provides a kind of extracting device of oil and its applications.Institute
It is as follows to state technical solution：
On the one hand, provide a kind of extracting device of oil, including dual tubing packing, be connected with the dual tubing packing first
Oil pipe and the second oil pipe hang the fixed double tube of first oil pipe and second oil pipe upper end；
First oil pipe include the upper tube being connect with the dual tubing packing upper end and with the dual tubing packing
The lower tube of lower end connection, the upper tube include the pump group part for oil recovery, and the length of the lower tube enters oily area enough；
The both ends of second oil pipe are hung respectively with the double tube and the dual tubing packing upper end is connect.
Specifically, the upper tube further includes the connecting tube for connecting the pump group part with the dual tubing packing, and
The pump group part and the double tube are hung to the production tube of connection.
Specifically, the lower tube lower part includes screen casing and the silk plug positioned at the screen casing bottom.
Specifically, the capacity of second oil pipe is controlled by surface choke.
Specifically, the diameter of second oil pipe is less than first oil pipe.
Specifically, the pump group part includes pump and the sucker rod with the pump connection.
Second aspect, the embodiment of the present invention provide a kind of application of above-mentioned extracting device of oil in the producing well that oil gas coexists.
The third aspect, the embodiment of the present invention provide a kind of above-mentioned extracting device of oil answering in non-mixed phase gas injection gravity drives oil recovery
With.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：
Oil channel is formed by the first oil pipe, exhaust passage is formed by the second oil pipe, during oil recovery simultaneously
It is vented by the second oil pipe, casing pressure is made to reduce, the gas column height in control gas-bearing formation region prevents from making oil reservoir region since casing pressure is excessively high
Hydrodynamic face the case where declining, ensure that recover the oil and do not limited by oil-gas ratio solve in coexistence of gas and liquid in production process
In the case of, gas is easy to scurry into pump, and gas channeling phenomenon occurs, pump efficiency is made to reduce, and gas lock phenomenon occurs when serious, and oil well stops production
The problem of.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is extracting device of oil structural schematic diagram provided in an embodiment of the present invention.
In figure label for：
1, dual tubing packing；2, the first oil pipe；3, the second oil pipe；4, double tube is hung；5, production casing；6, protective casing；
201, upper tube；202, lower tube；201a, pump group part；201a1, pump；201a2, sucker rod；201b, connecting tube；201c, production
Oil pipe；
A, gas-bearing formation region；B, oil reservoir region；C, water layer region.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
In a first aspect, the embodiment of the present invention provides a kind of extracting device of oil, referring to Fig. 1, including dual tubing packing 1, with it is described
The first oil pipe 2 and the second oil pipe 3 that dual tubing packing 1 is connected, first oil pipe 2 and 3 upper end of the second oil pipe are consolidated
Fixed double tube hangs 4；
First oil pipe 2 include the upper tube 201 being connect with 1 upper end of the dual tubing packing and with the two-tube envelope
Every the lower tube 202 of 1 lower end of device connection, the upper tube 201 includes the pump group part 201a for oil recovery, the lower tube 202
Length enter oily area enough；
The both ends of second oil pipe 3 are connect with double tube extension 4 and 1 upper end of the dual tubing packing respectively.
The operation principle of the embodiment of the present invention is illustrated below：
In producing well shown in Fig. 1, the extension of two-tube oil pipe 4 is installed on well head, the installation the in the lower end of two-tube tubing hanger 4
One oil pipe 2 and the second oil pipe 3, by the lower end of the upper tube 201 of the first oil pipe 2 and the lower end of the second oil pipe 3 with two-tube envelope
It is attached every the upper end of device 1, then the lower tube 202 of the first oil pipe 2 is connect with the lower end of dual tubing packing 1, by two-tube envelope
Every in production casing 5, being suppressed by ground pump truck makes dual tubing packing 1 set under 1 lower going-into-well of device, since upper tube 201 includes
For the pump group part 201a of oil recovery, and the length of lower tube 202 enters oily area enough, on ground under the action of pumping unit, leads to
Pumping for pump group part inner carrier is crossed, crude oil can be lifted to ground, and gas-bearing formation is formed since hydrocarbon density differs
The top of region A oil reservoir region B located underground, oil reservoir region B are located at the top of water layer region C, in oil recovery process, gas-bearing formation area
The gas of domain A enters the second oil pipe 3 behind the channel of the double-deck packer 1, then from ejection ground installation.
The embodiment of the present invention is can be seen that by above-mentioned operation principle, oil channel is formed by the first oil pipe 2, by the
Two oil pipes 3 form exhaust passage, are vented simultaneously by the second oil pipe 3 during oil recovery, casing pressure is made to reduce, control gas-bearing formation area
The gas column height of domain A solves the case where preventing from declining the hydrodynamic face of oil reservoir region B since casing pressure is excessively high in gas-liquid
In the case of coexisting, gas is easy to scurry into pump, and gas channeling phenomenon occurs, pump efficiency is made to reduce, and gas lock phenomenon, oil well occur when serious
The problem of halt production.
With continued reference to the structure in Fig. 1, the upper tube 201 further includes by the pump group part 201a and the two-tube packing
The connecting tube 201b that device 1 connects, and the pump group part 201a is hung into the 4 production tube 201c connecting with the double tube.It needs
It is noted that the first oil pipe 2 is one connects formed continuous oil channel, pump group with pump group part by more pipelines
Part 201a and double tube are hung to be needed to connect by pipeline between 4 and dual tubing packing 1, it is generally the case that the pump group part
201a includes the sucker rod 201a2 for pumping 201a1 and being connect with the pump 201a1, and sucker rod 201a2 is set to production tube
In 201c, the swabbing parameter intensity of 201a1 is pumped by control, to stablize the oil column height of oil reservoir region B, is uniformly adopted to realize
Oil.Also to ensure that the air-tightness of pump group part 201a, the embodiment of the present invention does not directly connect pump 201a1 with dual tubing packing 1
Connect, but connected the two by connecting tube 201b, it will be appreciated by persons skilled in the art that production tube 201c with connect
The diameter of pipe 201b should be matched with the diameter of pump 201a1, and the diameter of connecting tube 201b and the diameter of lower tube 202 should be with
The diameter of the interface channel of dual tubing packing 1 matches.
In order to avoid in oil recovery process solid particulate matter enter pump group part 201a and damage pump or reduce pump efficiency, it is described
202 lower part of lower tube includes screen casing 202a and the silk plug 202b positioned at the screen casing bottom.Pass through silk plug 202b and screen casing 202a
Cooperation larger solid particulate matter is screened out.
Moreover, it is noted that the capacity of second oil pipe 3 is controlled by surface choke, oil nozzle is usually to set
It is placed in the flow controller of well head, the blowing gas output of the second oil pipe is controlled by the size of flow controller.It can be adjusted by oil nozzle
Whole oil-gas ratio, oil-gas ratio increases when tuning up oil nozzle, and oil-gas ratio reduces when turning oil nozzle down.It, can be by oil-gas ratio control by adjusting oil nozzle
It makes in the reasonable scope, so that oil recovery production process is not limited by underground itself oil-gas ratio.
The diameter of second oil pipe 3 is less than first oil pipe 2.First oil pipe 2 of the embodiment of the present invention is mainly to use
In the channel of oil recovery, the second oil pipe 3 has been the channel of gas exhaust inspecting oil-gas ratio, and the diameter of the two can be calculated by simulation
It arrives, it is generally the case that two channel diameters on dual tubing packing are also inconsistent, and oil channel is larger, and exhaust passage is smaller.
Second aspect, the embodiment of the present invention provide a kind of application of above-mentioned extracting device of oil in the producing well that oil gas coexists.
The third aspect, the embodiment of the present invention provide a kind of above-mentioned extracting device of oil answering in non-mixed phase gas injection gravity drives oil recovery
With.
The embodiment of the present invention is in practical applications designed the parameters such as the specific internal diameter of extracting device of oil, below will citing
It is specifically described.
First, the application of the embodiment of the present invention needs to carry out adaptability selection to ground installation, needs selection to have two-tube
Oil nozzle is arranged on the channel being connected to the second oil pipe 3 on production tree in the production tree in channel, and double tube extension 4 is installed on well head
Place, the lower end that 4 are hung in double tube pass through the production tube 201c and the second oil pipe 3 of screw thread the first oil pipe 2 of hanging, the production tube
The outer diameter of 201c is 27/8", i.e., 27/8The outer diameter of inch, second oil pipe 3 is 1 ", i.e., 1 inch.
Then the pump 201a1 for being 38mm/44mm in the lower end of production tube 201c installation pump barrel internal diameter, pumps the upper of 201a1
End installation outer diameter is 7/8, and " the sucker rod 201a2 of (inch), sucker rod 201a2 are mounted in production tube 201c simultaneously, oil pumping
Bar 201a2, which is moved up and down by the driving of ground pumping unit in production tube 201c, drives the piston pumped in 201a1 or more to transport
It is dynamic, realize the process for lifting crude oil.
Then the lower end installation outer diameter of pump 201a1 is 27/8" lower end of the connecting tube 201b of (inch), connecting tube 201b connect
Dual tubing packing 4 is connect, while the lower end of the second oil pipe 3 also connects dual tubing packing 4.The outer diameter of dual tubing packing 4 is 150mm,
Dual tubing packing 4 suppresses 5MPa-10MPa-15MPa-20MPa, 10 minutes realities of each above-mentioned pressure spot voltage stabilizing by ground pump truck
Now set.After setting, " production casing 5 of (inch) is insulated (5 usual position of production casing to dual tubing packing 4 by a diameter of 7
In in protective casing 6), while the connecting tube 201b of the first oil pipe 2 and the second oil pipe 3 being fixed；Second oil pipe passes through double
Pipe packer 4 is connected to gas-bearing formation region A, and the gas in the A of gas-bearing formation region, from ground is sprayed, passes through surface choke by the second oil pipe
Discharge quantity is controlled, the gas column height in 4 times gas-bearing formation region A of dual tubing packing is stablized.
In addition, the lower end of dual tubing packing 4 connects the lower tube 202 of the first oil pipe 2,202 lower end of lower tube connects screen casing
202a, screen casing 202a are placed in oil reservoir region B, 2/3 region preferably below the interface of oil and gas.
Above application through the embodiment of the present invention efficiently solves has channeling in production process, air-lock problem, effectively carries
High oil recovery factor.
The alternative embodiment that any combination forms the disclosure may be used, herein no longer in above-mentioned all optional technical solutions
It repeats one by one.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of extracting device of oil, including dual tubing packing (1), the first oil pipe (2) for being connected with the dual tubing packing (1) and
The fixed double tube of first oil pipe (2) and second oil pipe (3) upper end is hung (4) by the second oil pipe (3)；
It is characterized in that, first oil pipe (2) include the upper tube (201) that is connect with the dual tubing packing (1) upper end with
And the lower tube (202) being connect with the dual tubing packing (1) lower end, the upper tube (201) include the pump group for oil recovery
The length of part (201a), the lower tube (202) enters oily area enough；
The both ends of second oil pipe (3) hang (4) and the dual tubing packing (1) upper end with the double tube respectively and connect.
2. the apparatus according to claim 1, which is characterized in that the upper tube (201) further includes by the pump group part
The connecting tube (201b) that (201a) is connect with the dual tubing packing (1), and the pump group part (201a) is oily with described pair
The production tube (201c) of pipe hanger (4) connection.
3. the apparatus according to claim 1, which is characterized in that lower tube (202) lower part include screen casing (202a) and
Silk plug (202b) positioned at the screen casing bottom.
4. the apparatus according to claim 1, which is characterized in that the capacity of second oil pipe (3) passes through surface choke
Control.
5. the apparatus according to claim 1, which is characterized in that the diameter of second oil pipe (3) is less than first oil
It manages (2).
6. the apparatus according to claim 1, which is characterized in that the pump group part (201a) include pump (201a1) and with
The sucker rod (201a2) of pump (201a1) connection.
7. a kind of application according to claim 1-6 any one of them device in the producing well that oil gas coexists.
8. a kind of driving the application in recovering the oil according to claim 1-6 any one of them device in non-mixed phase gas injection gravity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710262150.3A CN108729884A (en) | 2017-04-20 | 2017-04-20 | A kind of extracting device of oil and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710262150.3A CN108729884A (en) | 2017-04-20 | 2017-04-20 | A kind of extracting device of oil and its application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108729884A true CN108729884A (en) | 2018-11-02 |
Family
ID=63933205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710262150.3A Pending CN108729884A (en) | 2017-04-20 | 2017-04-20 | A kind of extracting device of oil and its application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108729884A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110644933A (en) * | 2019-10-25 | 2020-01-03 | 左入林 | Sucker rod and casing with oil pipe traction device |
| CN111434884A (en) * | 2019-01-14 | 2020-07-21 | 中国石油天然气股份有限公司 | Method and device for acquiring working parameters of double-pipe gas control and liquid recovery |
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| CN202370489U (en) * | 2011-10-17 | 2012-08-08 | 中国石油化工股份有限公司 | Parallel double-pipe gas-lift production process pipe column |
| CN204754881U (en) * | 2015-06-12 | 2015-11-11 | 中国海洋石油总公司 | Double -barrelled gas well flow string parallels |
| CN105089578A (en) * | 2015-08-28 | 2015-11-25 | 中国石油天然气股份有限公司 | Perforation and layering oil production combined device and oil production method |
| CN105201473A (en) * | 2015-10-22 | 2015-12-30 | 东北石油大学 | Multiple-oil-layer deep profile control injection device and oil layer deep profile control realizing method thereof |
| CN204941490U (en) * | 2015-09-30 | 2016-01-06 | 成都北方石油勘探开发技术有限公司 | A kind of note adopts one pressure cone downcomer rod structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040650A (en) * | 1989-10-06 | 1990-03-21 | 辽河石油勘探局沈阳采油厂 | Test technology for thermally cyclic parallel-pipe oil extraction |
| EP0588421A1 (en) * | 1992-09-18 | 1994-03-23 | NORSK HYDRO a.s. | Method and production pipe in an oil or gas reservoir |
| CN1169502A (en) * | 1996-06-21 | 1998-01-07 | 窦宏恩 | Method for eliminating effect of gas and water while extracting crude oil |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111434884A (en) * | 2019-01-14 | 2020-07-21 | 中国石油天然气股份有限公司 | Method and device for acquiring working parameters of double-pipe gas control and liquid recovery |
| CN111434884B (en) * | 2019-01-14 | 2022-05-10 | 中国石油天然气股份有限公司 | Method and device for acquiring working parameters of double-pipe gas control and liquid recovery |
| CN110644933A (en) * | 2019-10-25 | 2020-01-03 | 左入林 | Sucker rod and casing with oil pipe traction device |
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Application publication date: 20181102 |
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