CN113863899B - Gas-proof sand-proof pumping aid for oil well - Google Patents
Gas-proof sand-proof pumping aid for oil well Download PDFInfo
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- CN113863899B CN113863899B CN202111166158.2A CN202111166158A CN113863899B CN 113863899 B CN113863899 B CN 113863899B CN 202111166158 A CN202111166158 A CN 202111166158A CN 113863899 B CN113863899 B CN 113863899B
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- 239000003129 oil well Substances 0.000 title claims abstract description 50
- 238000005086 pumping Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 228
- 238000000926 separation method Methods 0.000 claims abstract description 146
- 239000004576 sand Substances 0.000 claims abstract description 101
- 238000001914 filtration Methods 0.000 claims abstract description 46
- 239000004575 stone Substances 0.000 claims abstract description 17
- 230000002265 prevention Effects 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 8
- 238000002386 leaching Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 16
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
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- 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
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- 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
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- 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)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The application discloses oil well gas-tight sand control helps takes out ware, help taking out ware includes: a wellbore body; the sand control component is arranged at the lowest part in the shaft body and is provided with a liquid inlet hole for filtering stone sand and circulating liquid; the gas-liquid separation component is arranged inside the shaft body and above the sand prevention component, the gas-liquid separation component is arranged inside the shaft body and above the gas-liquid separation component, the gas-liquid separation component is provided with a plurality of gas inlet holes, and the gas-liquid separation component is used for separating gas from liquid. The technical problems that in the prior art, gas production of an oil well cannot be effectively controlled, a gas lock is easily formed on a valve ball part, liquid is prevented from entering a pump, and produced sand is deposited in front of the valve ball and a valve seat, so that the pumping efficiency of the oil well is low are solved.
Description
Technical Field
The invention relates to the field related to oil well shafts, in particular to an oil well gas-proof sand-proof pumping-assisting device.
Background
At present, the problems of low underground formation porosity, poor fracture communication, shaft airlock, friction flow state influence and high ground back pressure resistance cause low oil well pump efficiency. The oil well has large gas production rate, so that the valve ball part forms a gas lock to prevent liquid from entering a pump, thereby affecting the pump efficiency, and meanwhile, the underground stratum has large sand production amount and is deposited before the valve ball and the valve seat. Resulting in the poor sealing between the valve ball and the valve seat. When the oil pump works, leakage is generated, and the problem of low oil well pump efficiency is caused.
However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the inventors of the present application find that the above-mentioned technology has at least the following technical problems:
the existing technology can not control the gas production of the oil well effectively, and is easy to form a gas lock on the valve ball part, and prevent the liquid from entering the pump, and the produced sand is deposited in front of the valve ball and the valve seat, thus leading to the technical problem of low pump efficiency of the oil well.
Disclosure of Invention
The embodiment of the application provides a sand control helps and takes out ware is prevented angry by oil well, has solved the existence among the prior art and can not carry out effective control to the gas production of oil well, forms the airlock easily at the valve bulb, blocks liquid and goes into the pump, and the sand of producing is deposit before valve ball and valve seat, and then leads to the technical problem that the oil well pump effect is low, reaches to carry out effective filtration to the stone sand, and the gas-liquid gets into the valve to advance the separation of qi liquid that moves forward, realizes improving the technological effect that the oil well pump was imitated.
In view of the above problems, the embodiment of the present application provides an oil well gas-proof sand-proof pumping aid.
The application provides an oil well gas-tight sand control helps takes out ware, wherein, help and take out the ware and include: a wellbore body; the sand control component is arranged at the lowest part in the shaft body and is provided with a liquid inlet hole for filtering stone sand and circulating liquid; the gas-liquid separation component is arranged in the shaft body, is positioned above the sand prevention component and is used for separating gas from liquid; the gas-liquid separation component is arranged in the shaft body and is positioned above the gas-liquid separation component, the gas-liquid separation component is provided with a plurality of gas inlet holes, the gas inlet holes are formed in one end, connected with the gas-liquid separation component, of the gas-liquid separation component, and the gas-liquid separation component is used for separating gas from liquid.
Preferably, the pumping aid further comprises: the pressure energy and kinetic energy conversion part is arranged inside the shaft body and located above the gas-liquid isolation part, wherein the pressure energy and kinetic energy conversion part is connected with the gas-liquid isolation part through a first connecting port, the pressure energy and kinetic energy conversion part is connected with the other end of the gas-liquid isolation part through a first connecting port, and the area of the first connecting port is larger than that of the first connecting port.
Preferably, the sand control member further comprises: the sand screen pipe comprises a plurality of layers of filtering sand-resisting screen pipes, wherein each layer of filtering sand-resisting screen pipe in the plurality of layers of filtering sand-resisting screen pipes is alternately provided with a concave part and a convex part, the concave part is a sand settling tank, and the convex part is a sand leaching hole; the concave parts and the convex parts of the adjacent layers of the filtering sand-resisting screen pipes in the multiple layers of filtering sand-resisting screen pipes are arranged oppositely, and the multiple layers of filtering sand-resisting screen pipes are arranged on the inner wall of the shaft body in a surrounding mode.
Preferably, the gas-liquid separation member further includes: the closed separation component is arranged above the sand prevention component and is provided with a plurality of liquid passing holes, and the closed separation component is used for realizing the first separation of gas and liquid through the liquid passing holes; the opening separation part is arranged above the closed separation part and is provided with a plurality of liquid passing holes, and the plurality of liquid passing holes are used for realizing secondary separation of gas and liquid.
Preferably, the gas-liquid separation member further includes: and the gas-liquid spiral mixing component is arranged above the opening separation component and is used for adjusting the flow state in the shaft into a mixed flow.
Preferably, the gas-liquid separation member further includes: the gas inlet holes are annularly distributed on the cross section of the shaft body and used for discharging gas at the position of the inner wall of the shaft body; the gas-liquid isolating plate is provided with an exhaust gap with the shaft body, one end of the gas-liquid isolating plate is connected with the gas inlets, and a gas exhaust space is formed by the gas inlets, the gas-liquid isolating plate and the inner wall of the shaft body and is used for isolating gas and liquid.
Preferably, the multi-layer filtering sand-resisting sieve tube is a three-layer filtering sand-resisting sieve tube.
Preferably, the plurality of liquid passing holes of the closed separation member and the open separation member have an angle of 45 °.
Preferably, the pumping aid further comprises: and the exhaust pipeline is communicated with the gas discharge space and is used for realizing gas discharge.
One or more technical solutions in the present application have at least one or more of the following technical effects:
the application provides an oil well gas-tight sand control helps takes out ware, wherein, help and take out the ware and include: a wellbore body; the sand control component is arranged at the lowest part in the shaft body and is provided with a liquid inlet hole for filtering stone sand and circulating liquid; the gas-liquid separation component is arranged in the shaft body, is positioned above the sand prevention component and is used for separating gas from liquid; the gas-liquid separation component is arranged in the shaft body and is positioned above the gas-liquid separation component, the gas-liquid separation component is provided with a plurality of gas inlet holes, the gas inlet holes are formed in one end, connected with the gas-liquid separation component, of the gas-liquid separation component, and the gas-liquid separation component is used for separating gas from liquid. The effective filtration of stone sand is realized through the sand control part, and the effective separation of gas and liquid is realized through gas-liquid separation part and gas-liquid isolation part, and then reaches to effectively filter stone sand, and the gas-liquid that gets into the valve to the oil well advances the gas-liquid separation, realizes improving the technological effect of oil well pump efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the present application or prior art, the drawings used in the embodiments or the description of the prior art are briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of the general structure of an oil well gas-proof sand-proof pumping aid according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional structural diagram of a plurality of gas inlet hole positions of an oil well gas-proof sand-proof pumping aid according to an embodiment of the present application;
description of reference numerals: the well bore body 1, the sand control part 2, the sand screen pipe 21 is hindered in the multilayer filtration, the gas-liquid separation part 3, close mouthful separation part 31, opening separation part 32, gas-liquid spiral mixing part 33, gas-liquid separation part 4, a plurality of gas inlet 41, gas-liquid division board 42, pressure energy and kinetic energy conversion part 5, first access 51, first access 52, exhaust duct 6.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, specific embodiments thereof are described in detail below with reference to the accompanying drawings. In the following description, numerous details are set forth to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Technical idea
The application provides an oil well gas-tight sand control helps takes out ware, has solved the existence among the prior art and can not carry out effective control to the gas production of oil well, forms the gas lock at the valve bulb portion easily, blocks liquid and gets into the pump, produces sand deposit before valve ball and valve seat, and then leads to the technical problem that the oil well pump efficiency is low, reaches and effectively filters producing sand, advances the separation of gas-liquid to the oil well gas-liquid entering valve, realizes improving the technological effect that the oil well pump efficiency was imitated.
The technical scheme in the application has the following overall structure: an oil well gas-tight sand control pumping aid, wherein the pumping aid comprises: a wellbore body; the sand control component is arranged at the lowest part in the shaft body and is provided with a liquid inlet hole for filtering stone sand and circulating liquid; the gas-liquid separation component is arranged in the shaft body, is positioned above the sand prevention component and is used for separating gas from liquid; the gas-liquid separation component is arranged in the shaft body and is positioned above the gas-liquid separation component, the gas-liquid separation component is provided with a plurality of gas inlet holes, the gas inlet holes are formed in one end, connected with the gas-liquid separation component, of the gas-liquid separation component, and the gas-liquid separation component is used for separating gas from liquid. The technical effects of effectively filtering the stone sand, moving gas and liquid into the valve for separation of the gas and the liquid in the oil well and improving the pump efficiency of the oil well are achieved.
To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Example 1
The application provides an oil well gas-tight sand control helps takes out ware, as shown in figure 1, wherein, help and take out the ware and include: a wellbore body 1; the sand control component 2 is arranged at the lowest part in the shaft body 1, and the sand control component 2 is provided with a liquid inlet hole for filtering stone sand and circulating liquid; the gas-liquid separation component 3 is arranged in the shaft body 1, is positioned above the sand control component 2 and is used for separating gas from liquid; the gas-liquid separation component 4 is arranged in the shaft body 1 and is positioned above the gas-liquid separation component 3, the gas-liquid separation component 4 is provided with a plurality of gas inlet holes, the gas inlet holes are formed in one end, connected with the gas-liquid separation component 3, of the gas-liquid separation component 4, and the gas-liquid separation component 4 is used for separating gas from liquid.
Specifically, the whole shaft body 1 is a cylindrical part, the shaft body 1 may be a section of cylinder or a plurality of sections of cylinders with different sizes are connected in a matching manner, a cylindrical accommodating space is provided inside the shaft body 1, and gas and liquid can be circulated and separated based on the accommodating space. The sand control part 2 sets up the below of the inside of pit shaft body 1, promptly the feed liquor end of pit shaft body 1, sand control part 2 generally is provided with the special sand screen that hinders, can carry out the high efficiency according to the granularity of grit and hinder sand, can prevent that the grit majority can not get into valve. The valve seat and sand are prevented from being deposited, the leakage between the valve seat and the valve ball is avoided, and the technical effects of increasing the oil well yield and improving the oil well pump efficiency are achieved. The gas-liquid separation component 3 is arranged in the shaft body 1 and is positioned above the sand prevention component 2, the gas-liquid separation component 3 is provided with a plurality of liquid passing holes, when a gas-liquid mixture enters the gas-liquid separation component 3, the gas-liquid separation component is used for separating gas from liquid based on the principle that the gas density is smaller than the liquid density through the liquid passing holes in the gas-liquid separation component 3, and a foundation is laid for the effective separation of gas and liquid in the follow-up process. The gas-liquid separation component 4 is arranged in the shaft body 1 and is positioned above the gas-liquid separation component 3, the gas-liquid separation component 4 is provided with a plurality of gas inlet holes, the gas inlet holes are arranged at one end, connected with the gas-liquid separation component 3, of the gas-liquid separation component 4, the gas inlet holes are annularly distributed on the cross section of the shaft body 1, and gas and liquid separated by the gas-liquid separation component 3 can be effectively separated and distributed. Effective filtration of stone sand is realized through sand control part 2, realizes the effective separation of gas and liquid through gas-liquid separation part 3 and gas-liquid separation part 4, and then reaches and effectively filters the stone sand, and the gas-liquid that gets into the valve to the oil well advances the gas-liquid separation, realizes improving the technological effect of oil well pump efficiency.
Preferably, the pumping aid further comprises: the pressure energy and kinetic energy conversion part 5 is arranged inside the shaft body 1 and is positioned above the gas-liquid isolation part 4, wherein the pressure energy and kinetic energy conversion part 5 is connected with the gas-liquid isolation part 4 through a first connecting port 51, the other end of the pressure energy and kinetic energy conversion part 5 is provided with a first connecting port 52, and the area of the interface of the first connecting port 51 is larger than that of the first connecting port 52.
Specifically, the pressure energy and kinetic energy conversion part 5 is arranged inside the wellbore body 1 and located above the gas-liquid separation part 4, the pressure energy and kinetic energy conversion part 5 has a first inlet 51 and a first outlet 52, wherein the area of the interface of the first inlet 51 is larger than that of the first outlet 52, and under the premise of unchanged formation pressure and flow rate, the area of the first inlet 51 is large and the area of the first outlet 52 is small. The principle of a fire-fighting gun is utilized to convert pressure energy and kinetic energy into liquid. The opening and closing time of the valve ball is a fixed value, when liquid is sprayed, the kinetic energy is strong, namely the pumping amount of the liquid is large in the same time, and the technical effect of improving the yield of an oil well can be achieved.
Preferably, the sand control member 2 further comprises: the sand screen pipe comprises a plurality of layers of filtering sand screen pipes 21, wherein each layer of filtering sand screen pipe in the plurality of layers of filtering sand screen pipes 21 is alternately provided with a concave part and a convex part, the concave part is a sand setting groove, and the convex part is a sand draining hole; the concave parts and the convex parts of the adjacent layers of the filtering sand-resisting screen pipes 21 are arranged oppositely, and the filtering sand-resisting screen pipes 21 are arranged on the inner wall of the shaft body in a surrounding manner.
Preferably, the multi-layer filtering sand-resisting screen 21 is a three-layer filtering sand-resisting screen.
Specifically, the multi-layer filtering sand-blocking screen 21 is a special sand-blocking net produced according to sand granularity and used for preventing valve loss of a sand sedimentation pump, and the multi-layer filtering sand-blocking screen 21 is preferably a three-layer filtering sand-blocking screen, wherein each layer of the multi-layer filtering sand-blocking screen 21 is alternately provided with concave parts and convex parts, the concave parts are sand setting grooves, and the convex parts are sand leaching holes. The aperture size of the sand leaching holes of the convex parts is determined by the strength of sand. The concave parts and the convex parts of the adjacent layers in the multilayer filtering sand-resistant screen pipe 21 are oppositely arranged, namely the concave parts of the first layer filtering sand-resistant screen pipe and the convex parts of the second layer filtering sand-resistant screen pipe are arranged on the same section of the shaft body 1, and the multilayer filtering sand-resistant screen pipe 21 is arranged on the inner wall of the shaft body 1 in a surrounding manner to form an annular sand filtering net. The sand is filtered by the multi-layer filtering sand-blocking sieve tube 21, and the sand can be filtered and sunk to the bottom of the oil well based on the gravity action of the sand through the sand settling pipeline. The number of sand entering the valve can be reduced by the multi-layer filtering sand-resisting sieve tube 21 which is distributed in a staggered way. The sand deposition of the valve seat is reduced, the leakage between the valve seat and the valve ball is avoided, and the technical effects of increasing the oil well yield and improving the oil well pump efficiency are achieved.
Preferably, the gas-liquid separation member 3 further includes: a closed separation component 31, wherein the closed separation component 31 is arranged above the sand control component 2, and the closed separation component 31 is provided with a plurality of liquid passing holes for realizing the first separation of gas and liquid; and an opening separation member 32, wherein the opening separation member 32 is disposed above the closing separation member 31, and the opening separation member 32 is provided with a plurality of liquid passing holes through which the second separation of the gas and the liquid is performed.
Preferably, the plurality of liquid passing hole angles of the closing and opening separation member 31 and 32 are 45 °
Preferably, the gas-liquid separation member 3 further includes: and a gas-liquid spiral mixing member 33, wherein the gas-liquid spiral mixing member 33 is provided above the opening separation member 32, and adjusts a flow state in the well bore to a mixed flow.
Specifically, the closing separation member 31 and the opening separation member 32 are members for separating gas and liquid, and discharge gas along a gas path and extract liquid along a liquid path. The closed separation member 31 is disposed above the sand control member 2, the closed separation member 31 is a member for performing a first separation of gas and liquid, the open separation member 32 is disposed above the closed separation member 31, and the second separation of gas and liquid is performed by the open separation member 32. Further, the closed separation member 31 and the open separation member 32 are both provided with a plurality of fluid passing holes, and preferably, the plurality of fluid passing holes are arranged at an angle of 45 ° with respect to the cross section of the wellbore body 1. When the oil, gas, and water mixture enters the closed separation member 31, the gas density is low through the 45 ° liquid passing hole, and after passing through the 45 ° liquid passing hole, it rises along the inner wall of the shaft body 1, while the liquid density is high, and rises in the middle. When the mixed liquid containing a small amount of gas enters the opening separating part 32, the liquid is mostly in the middle, and the gas is mostly in the periphery. When the gas enters the 45-degree opening separation part 32 for the second time, the gas-containing mixed liquid is subjected to the second separation under the action of the density difference. Further, in order to improve the gas-liquid separation effect, the closed-end separation member 31 and the open-end separation member 32 may be repeatedly disposed, the gas enters the periphery, and after the liquid with a small gas content enters the closed-end gas-liquid separation member 31 and the open-end separation member 32 for the second time, the separated gas enters the exhaust hole along the periphery of the pipe wall and rises to the oil jacket annulus. While liquid with low water content moves up. When the pumping unit descends, the exhaust hole becomes a liquid supplementing hole. The liquid is supplied to the inner spaces of the opening separating component 32 and the closing separating component 31 under the action of the oil sleeve annulus liquid level difference, and preparation is made for increasing the liquid supply amount of the oil pump. The gas-liquid separation part 3 further includes a gas-liquid spiral mixing part 33, the gas-liquid spiral mixing part 33 is disposed above the opening separation part 32, that is, the gas-liquid spiral mixing part 33 is a spiral device, and the gas-liquid spiral mixing part 33 includes a fixed central shaft, the gas-liquid spiral mixing part 33 is disposed inside the accommodating space of the wellbore body 1 in a manner that the gas-liquid spiral mixing part 33 can rotate along the fixed central shaft through the fixed central shaft, during the liquid flowing process, the gas-liquid spiral mixing part 33 is driven by the liquid flowing to rotate along the fixed central shaft, so that the liquid flow state in the wellbore body 1 is changed, and the flow states such as annular flow, slug layer, and streak flow are adjusted to be mixed flow, the gas-liquid spiral mixing part 33 may be formed by combining a plurality of blade spirals, for example, the gas-liquid spiral mixing part 33 includes 3 blades, each blade has an included angle of 120 °, and the spiral angle of each blade may be 300 °, and the length of each blade may be 480mm. Because the stratum has poor liquid supply capacity and low liquid flow impact speed, most of gas with low density rises along the outer wall of the gas-liquid spiral mixing part 33, and the oil and water have high specific gravity and move upwards in the middle of the mixer, thereby realizing better gas-liquid separation effect.
Preferably, as shown in fig. 2, the gas-liquid separation member 4 further includes: a plurality of gas inlet holes 41, the gas inlet holes 41 being annularly distributed on a cross section of the shaft body 1 and used for discharging gas at an inner wall position of the shaft body 1; the gas-liquid isolating plate 42 is provided with an exhaust gap with the shaft body 1, one end of the gas-liquid isolating plate 42 is connected with the gas inlets 41, and a gas exhaust space is formed by the gas inlets 41, the gas-liquid isolating plate 42 and the inner wall of the shaft body 1 and is used for isolating gas from liquid.
Preferably, the pumping aid further comprises: and the exhaust pipeline 6 is communicated with the gas discharge space and is used for realizing gas discharge.
Specifically, the plurality of gas holes 41 are disposed on the cross-sectional plane of the wellbore body 1, and the plurality of gas holes 41 are annularly distributed, preferably, the plurality of gas holes 41 are uniformly distributed, a center of an annular gas hole zone formed at a gas hole distribution position of the plurality of gas holes 41 coincides with a cross-sectional center of the wellbore body 1, the gas-liquid separation plate 42 and the wellbore body 1 have an exhaust gap, one end of the gas-liquid separation plate 42 is connected to the annular gas hole zone formed by the plurality of gas inlet holes 41, a gas discharge space is formed by the plurality of gas inlet holes 41, the gas-liquid separation plate 42 and the inner wall of the wellbore body 1, that is, gas enters the exhaust gap through the plurality of gas holes 41 at the inner wall position of the wellbore body 1, gas is discharged downward through the exhaust gap, liquid flows upward along the annularly distributed central channel and enters the liquid channel formed by the gas-liquid separation plate 42, so that the gas and liquid are separated, thereby reducing the gas lock frequency of the oil pump, and mostly liquid enters the oil pump, and improving the pumping efficiency of the oil well.
Example 2
The application provides a using method of an oil well gas-proof sand-proof pumping aid, wherein the method comprises the following steps:
when the oil well pump works, the oil well gas-proof sand-proof pumping aid is assembled to the oil inlet position of a shaft, an oil-gas-sand mixture firstly contacts the sand-proof component 2, sand and stone are filtered through the sand-proof component 2, the oil-gas mixture continuously flows upwards, after the oil-gas-sand mixture is subjected to primary separation through the gas-liquid separation component 3, gas and liquid are separated through the gas-liquid separation component 4, effective separation of gas and liquid is realized, further effective filtration of stone sand is realized, gas and liquid of an oil well enter a valve to advance to perform gas-liquid separation, and the technical effect of improving the pumping effect of the oil well is realized.
The technical scheme provided in the application at least has the following technical effects or advantages:
the application provides an oil well gas-tight sand control helps takes out ware, wherein, help and take out the ware and include: a wellbore body; the sand control component is arranged at the lowest part in the shaft body and is provided with a liquid inlet hole for filtering stone sand and circulating liquid; the gas-liquid separation component is arranged in the shaft body, is positioned above the sand prevention component and is used for separating gas from liquid; the gas-liquid separation component is arranged in the shaft body and is positioned above the gas-liquid separation component, the gas-liquid separation component is provided with a plurality of gas inlet holes, the gas inlet holes are formed in one end, connected with the gas-liquid separation component, of the gas-liquid separation component, and the gas-liquid separation component is used for separating gas from liquid. The sand prevention component is used for effectively filtering stone sand, the gas-liquid separation component and the gas-liquid separation component are used for effectively separating gas and liquid, so that the stone sand is effectively filtered, gas and liquid in an oil well are subjected to gas-liquid separation before entering a valve, and the technical effect of improving the pump efficiency of the oil well is achieved.
While the preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the embodiments of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (8)
1. An oil well gas-tight sand control pumping aid, wherein the pumping aid comprises:
a wellbore body;
the sand control component is arranged at the lowest part in the shaft body and is provided with a liquid inlet hole for filtering stone sand and circulating liquid;
the gas-liquid separation component is arranged in the shaft body, is positioned above the sand prevention component and is used for separating gas from liquid;
the gas-liquid separation component is arranged in the shaft body and is positioned above the gas-liquid separation component, the gas-liquid separation component is provided with a plurality of gas inlet holes, the gas inlet holes are formed in one end, connected with the gas-liquid separation component, of the gas-liquid separation component, and the gas-liquid separation component is used for separating gas from liquid;
wherein the gas-liquid separation member further comprises:
the closed separation component is arranged above the sand prevention component and is provided with a plurality of liquid passing holes, and the closed separation component is used for realizing the first separation of gas and liquid through the liquid passing holes;
the opening separation part is arranged above the closed separation part and is provided with a plurality of liquid passing holes, and the plurality of liquid passing holes are used for realizing secondary separation of gas and liquid.
2. The pumping aid of claim 1, wherein the pumping aid further comprises:
the pressure energy and kinetic energy conversion part is arranged inside the shaft body and is positioned above the gas-liquid isolation part, wherein a first access port is formed in the connecting end of the pressure energy and kinetic energy conversion part and the gas-liquid isolation part, a first access port is formed in the other end of the pressure energy and kinetic energy conversion part, and the interface area of the first access port is larger than that of the first access port.
3. The extraction aid of claim 1, wherein the sand control component further comprises:
the sand screen pipe comprises a plurality of layers of filtering sand screen pipes, wherein each layer of filtering sand screen pipe in the plurality of layers of filtering sand screen pipes is alternately provided with a concave part and a convex part, the concave part is a sand setting groove, and the convex part is a sand leaching hole;
the concave parts and the convex parts of the adjacent layers of the filtering sand-resisting screen pipes in the multiple layers of filtering sand-resisting screen pipes are arranged oppositely, and the multiple layers of filtering sand-resisting screen pipes are arranged on the inner wall of the shaft body in a surrounding mode.
4. The extraction aid of claim 1, wherein the gas-liquid separation component further comprises:
and the gas-liquid spiral mixing component is arranged above the opening separation component and is used for adjusting the flow state in the shaft into a mixed flow.
5. The extraction aid of claim 4, wherein the gas-liquid separation member further comprises:
the gas inlet holes are annularly distributed on the cross section of the shaft body and used for discharging gas at the position of the inner wall of the shaft body;
the gas-liquid isolating plate and the shaft body are provided with an exhaust gap, one end of the gas-liquid isolating plate is connected with the plurality of gas inlet holes, and a gas exhaust space is formed by the plurality of gas inlet holes, the gas-liquid isolating plate and the inner wall of the shaft body and is used for isolating gas and liquid.
6. The pumping aid of claim 3, wherein the multi-layered filter-sand screen is a three-layered filter-sand screen.
7. The pumping aid of claim 1, wherein the plurality of liquid passing hole angles of the closed separation member and the open separation member are 45 °.
8. The suction aid of claim 5, wherein the suction aid further comprises:
and the exhaust pipeline is communicated with the gas discharge space and is used for realizing gas discharge.
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| CN202111166158.2A CN113863899B (en) | 2021-09-30 | 2021-09-30 | Gas-proof sand-proof pumping aid for oil well |
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