CN106285620A - High gas-oil ratio (HGOR) oil well gas-liquid piece-rate system - Google Patents
High gas-oil ratio (HGOR) oil well gas-liquid piece-rate system Download PDFInfo
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- CN106285620A CN106285620A CN201610996447.8A CN201610996447A CN106285620A CN 106285620 A CN106285620 A CN 106285620A CN 201610996447 A CN201610996447 A CN 201610996447A CN 106285620 A CN106285620 A CN 106285620A
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- separator
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- 239000007788 liquid Substances 0.000 title claims abstract description 84
- 239000003129 oil well Substances 0.000 title claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 46
- 230000008878 coupling Effects 0.000 claims abstract description 25
- 238000010168 coupling process Methods 0.000 claims abstract description 25
- 238000005859 coupling reaction Methods 0.000 claims abstract description 25
- 239000004576 sand Substances 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims description 39
- 238000007789 sealing Methods 0.000 claims description 35
- 238000002156 mixing Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 abstract description 100
- 238000011010 flushing procedure Methods 0.000 abstract description 8
- 239000012530 fluid Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 abstract 2
- 230000037361 pathway Effects 0.000 abstract 2
- 239000013049 sediment Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—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)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The present invention provides a kind of high gas-oil ratio (HGOR) oil well gas-liquid piece-rate system, including: the sleeve pipe being arranged in well be arranged on inside pipe casing, and passing sequentially through dual pathways aerated fluid separator, aerated fluid transmission channel assembly and the feeding device assembly that tubing coupling connects from top to bottom, the length of sleeve pipe is equal to the distance between well head and shaft bottom；Wherein, the top of dual pathways aerated fluid separator connects oil well pump, and the bottom of feeding device assembly connects sand sediment pipe.Utilize the present invention by improving swirl velocity, set up gas channel and eddy flow radius, improve the downhole gas of high gas-oil ratio (HGOR) mechanical oil well, sand, oil separating efficiency；Simultaneously by aerated fluid road ball-and-seat and the setting of double-deck telescoping tube, prevent the effect that flushing fluid pours in down a chimney when serving well-flushing, and the purpose of packer top fluid column unloading can be facilitated again when underground work.
Description
Technical Field
The invention relates to the technical field of oil fields, in particular to a high gas-oil ratio oil well gas-liquid separation system which can efficiently separate oil, gas and sand at a suction inlet of a downhole pump during the production of a high gas-oil ratio mechanical oil production well, can separate an oil layer at the lower part of a packer during well flushing, prevent well flushing liquid from flowing backwards, and can unload oil and prevent blowout during pump inspection operation.
Background
At present, the crude oil production in oil field mainly adopts mechanical oil extraction method, when the mechanical oil extraction well with high gas-oil ratio is produced, the efficiency of the deep well pump can be affected by sucking crude oil containing free gas and too high sand amount by the deep well pump, therefore, gas-sand separation devices such as gas-sand anchor are added at the suction inlet of the deep well pump. The prior gas-sand separation device has the following problems when in use:
1. the common gas anchor separation chamber is small, the rotational flow radius is small, the separation efficiency is low, and the common gas anchor separation chamber cannot be suitable for a high gas-oil ratio oil production well;
2. the existing casing separation device adopts a single flow passage, an ascending oil flow and a descending oil flow have the same flow passage, and the gas-oil separation effect on a high gas-oil ratio oil production well is poor;
3. the common gas anchor and the prior casing separator have the problems that flushing fluid is poured backwards during flushing or oil can not be discharged during underground operation.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide a gas-liquid separation system for high gas-oil ratio oil wells to solve the above problems in the background art.
The invention provides a gas-liquid separation system of an oil well with high gas-oil ratio, which comprises: the device comprises a casing arranged in a well and a dual-channel gas-liquid mixing separator, a gas-liquid mixing transmission channel assembly and a liquid inlet device assembly which are arranged in the casing and sequentially connected through a tubing coupling from top to bottom, wherein the length of the casing is equal to the distance between a well head and a well bottom; wherein,
the double-channel mixed gas-liquid separator comprises a separator core pipe and a separator oil pipe which is sleeved on the separator core pipe and has the same length as the separator core pipe; a gap is reserved between the separator oil pipe and the separator core pipe to form a core pipe annulus, and a gap is reserved between the sleeve and the separator oil pipe to form an oil pipe annulus; an upper spiral plate and a lower spiral plate are arranged in the oil pipe annulus, the upper spiral plate and the lower spiral plate are respectively and tightly matched with the separator core pipe and the separator oil pipe, and a small hole is formed in the position, close to the pipe wall of the oil pipe, of the inner side of the upper spiral plate; the top ends of the upper spiral plate and the lower spiral plate are respectively provided with a vertical separation plate, an outlet is formed in the position, located on the vertical separation plate, on the pipe wall of the separator oil pipe, an overflowing ring which is communicated with the interior of the separator core pipe and the annular space of the oil pipe is arranged on the outlet, and the vertical separation plate is located in the radial position of the separator oil pipe and is perpendicular to the radial direction of the overflowing ring; flow guide pipes are sleeved at the top ends of the upper spiral plate and the lower spiral plate, a half-moon-shaped flow guide pipe end socket which is flush with the top end of the flow guide pipe is arranged at one side of the overflowing ring at the top end of the flow guide pipe, and a cavity which is open downwards is formed in an oil pipe annulus by the vertical partition plate, the flow guide pipe and the half-moon-shaped flow guide pipe end socket; the bottom ends of the upper spiral plate and the lower spiral plate are sleeved with protecting cylinders with hollow bottoms; a core tube end socket is arranged at the top end inside the core tube of the separator;
the mixed gas-liquid transmission channel assembly comprises a core tube check valve, an oil pipe oil inlet device, a core tube sliding sleeve and a telescopic tube; the telescopic pipe comprises a telescopic outer pipe and a transmission oil pipe, the transmission oil pipe is connected with the oil pipe oil feeding device through a core pipe sliding sleeve, and the telescopic outer pipe is sleeved on the transmission oil pipe and the oil pipe oil feeding device;
the liquid inlet device assembly comprises a packer, a packer core pipe and a core pipe liquid inlet device, wherein the packer is sleeved on the packer core pipe, and the top end of the core pipe liquid inlet device is connected with the bottom end of the packer.
By utilizing the gas-liquid separation system of the high gas-oil ratio oil well, the separation efficiency of underground gas, sand and oil of the high gas-oil ratio mechanical oil production well is improved by increasing the rotational flow speed and additionally arranging the airflow channel and the rotational flow radius; meanwhile, through the arrangement of the check valve of the gas-liquid mixing channel and the double-layer telescopic pipe, the purposes of preventing the flushing liquid from flowing backwards during flushing and facilitating the unloading of the liquid column on the upper part of the packer during underground operation are achieved.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:
FIG. 1 is a schematic structural diagram of a two-channel gas-liquid mixture separator according to an embodiment of the invention;
FIG. 2 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 3 is a schematic structural diagram of a mixed gas-liquid transmission channel assembly according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of an inlet device assembly according to an embodiment of the invention.
Wherein the reference numerals include:
the same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The invention provides a gas-liquid separation system of an oil well with high gas-oil ratio, which comprises: the device comprises a sleeve arranged in a well and a double-channel gas-liquid mixing separator, a gas-liquid mixing transmission channel assembly and a liquid inlet device assembly which are arranged inside the sleeve and sequentially connected through a tubing coupling from top to bottom, wherein the distance between a well head and a well bottom is the length of the sleeve.
The structures of the two-channel gas-liquid mixture separator, the gas-liquid mixture transmission channel assembly and the liquid inlet device assembly are described in detail below.
Fig. 1 shows the structure of a two-channel gas-liquid mixture separator according to an embodiment of the present invention.
As shown in fig. 1, the dual-channel gas-liquid separator provided by the invention comprises: the separator oil pipe 102 is the same as the separator core pipe 101 in length, and the top end and the bottom end of the separator oil pipe 102 are flush with the top end and the bottom end of the separator core pipe 101; an inner sealing surface is processed at the bottom end of the separator core tube 101, an outer screw thread is processed at the top end of the separator core tube 101, the outer screw thread is connected with one end of the tubing coupling 103, and the other end of the tubing coupling 103 is connected with an oil well pump (not shown); a core tube end enclosure 115 is arranged at the top end inside the separator core tube 101; an outer screw thread is processed at the bottom end of the separator oil pipe 102, a gap is reserved between the separator oil pipe 102 and the separator core pipe 101 to form a core pipe annulus, centralizing blocks are respectively arranged at positions close to the top and the bottom in the core pipe annulus, and the two centralizing blocks are concentrically fixed with the separator core pipe 101; a gap is left between a sleeve (not shown) and the separator oil pipe 102 to form an oil pipe annulus, an upper spiral plate 104 and a lower spiral plate 105 are arranged in the oil pipe annulus, the upper spiral plate 104 and the lower spiral plate 105 are respectively tightly matched with the separator core pipe 101 and the separator oil pipe 102, and a small hole is formed in the position, close to the pipe wall of the oil pipe, of the inner side of the upper spiral plate 104. Referring to fig. 2, a vertical separation plate 106 and a vertical separation plate 107 are respectively arranged at the top ends of the upper spiral plate 104 and the lower spiral plate 105, an outlet 109 is arranged on the wall of the separator oil pipe 102 between the vertical separation plate 106 and the vertical separation plate 107, a flow passing ring 110 for communicating the inside of the separator core pipe 101 with the oil pipe annulus is arranged on the outlet 109, and the vertical separation plate 106 and the vertical separation plate 107 are respectively arranged at the radial position of the separator oil pipe 102 and are respectively perpendicular to the radial direction of the flow passing ring 110; a flow guide tube 111 is sleeved at the top ends of the upper spiral plate 106 and the lower spiral plate 107, a half-moon-shaped flow guide tube end enclosure 112 is arranged at one side, located on the overflowing ring 110, of the top end of the flow guide tube 111, the half-moon-shaped flow guide tube end enclosure 112 is flush with the top end of the flow guide tube 111, and the vertical partition plate 106, the vertical partition plate 107, the flow guide tube 111 and the half-moon-shaped flow guide tube end enclosure 112 form a chamber which is open downwards in an; the bottom end sleeves of the upper spiral plate 104 and the lower spiral plate 105 are provided with a protective cylinder 108 with a hollow bottom, and the protective cylinder 108 and the guide pipe 111 both play a role in guiding flow.
In a preferred embodiment of the present invention, a duct centering plate 113 is disposed at the top end of the duct 111, and a casing centering plate 114 is disposed at the bottom of the casing 108.
Fig. 3 shows the structure of the mixed gas-liquid transmission passage assembly according to the embodiment of the invention.
As shown in fig. 3, the mixed gas-liquid transmission channel assembly includes: the core tube check valve, the oil inlet device of the oil pipe, the core tube sliding sleeve and the extension tube; the telescopic pipe comprises a telescopic outer pipe 201 and a transmission oil pipe 202, an outer screw thread is processed at the bottom of the transmission oil pipe 202, a transmission core pipe 203 is arranged in the transmission oil pipe 202, an inner sealing surface is processed at the bottom of the transmission core pipe 203, a sliding coupling 204 is connected to the top of the telescopic outer pipe 201, an inner screw thread is processed at the bottom of the telescopic outer pipe 201, and a gap is reserved between the inner wall of the sliding coupling 204 and the transmission oil pipe 202.
The top of the transmission core tube 203 is processed with an outer sealing surface, the top of the transmission oil tube 202 is processed with an outer screw thread, the transmission oil tube 202 is connected with a tubing coupling 205 through the outer screw thread of the transmission oil tube 202, the top surface of the tubing coupling 205 is flush with the outer sealing surface of the top of the transmission core tube 203, the tubing coupling 205 is connected with the outer screw thread of the bottom of the separator oil tube 102, and the outer sealing surface of the top of the transmission core tube 203 is matched with the inner sealing surface of the bottom of the separator core tube 102.
In a preferred embodiment of the present invention, a centering block is respectively disposed in a gap formed between the transfer tubing 202 and the transfer core tube 203 at positions close to the top and the bottom, the centering block is concentrically fixed to the transfer core tube 203, and the bottom surface of the centering block is flush with the bottom surface of the transfer tubing 202.
The core tube check valve comprises a core tube check valve outer sleeve 206, an inner screw thread is processed at the top of the core tube check valve outer sleeve 206, a core tube check valve sleeve 207 is arranged in the core tube check valve outer sleeve 206, an inner screw thread is processed at the bottom of the core tube check valve sleeve 207, a valve cover pressing cap 208, a valve cover 209, a valve ball 210 and a valve seat 211 are sequentially arranged in the core tube check valve sleeve 207 from top to bottom, an outer sealing surface which is flush with the core tube check valve outer sleeve 206 is processed at the top of the valve cover pressing cap 208, and an outer sealing surface at the top of the valve cover pressing cap 208 is matched with an inner sealing surface at the bottom of the transmission core tube 203; the internal threads on the top of the spool check housing 206 are connected to the external threads on the bottom of the transfer tubing 202.
It should be noted that the outside diameters of the tubing collar 205 and the core tube check valve housing 206 are slightly smaller than the inside diameter of the telescoping outer tube 201.
The core tube sliding sleeve comprises a sliding sleeve outer tube 212 and a sliding sleeve inner tube 213, the sliding sleeve inner tube 213 is connected with the core tube single flow valve sleeve 207 through an inner screw thread at the bottom of the core tube single flow valve sleeve 207, and an oil discharging hole 214 is formed in the tube wall of the sliding sleeve inner tube 213; the sliding sleeve outer pipe 212 is sleeved on the sliding sleeve inner pipe 213, an inner sealing surface is arranged at the top of the sliding sleeve outer pipe 212, and the inner sealing surface is in sliding sealing fit with the sliding sleeve inner pipe 213; the bottom of the sliding sleeve outer tube 212 is provided with an inner screw thread.
The oil inlet device of the oil pipe comprises an oil inlet core pipe 215 and an oil inlet outer pipe 216, wherein an outer screw thread is processed at the top of the oil inlet core pipe 215, an inner screw thread at the bottom of the sliding sleeve outer pipe 212 is connected with the outer screw thread at the top of the oil inlet core pipe 215, an oil inlet hole 217 is formed in the middle of the oil inlet outer pipe 216, an outer screw thread is processed at the top of the oil inlet outer pipe 216, and the outer screw thread at the top of the oil inlet outer pipe 216 is connected with the inner screw thread at the bottom of the telescopic.
In a preferred embodiment of the present invention, a centering block is disposed between the oil inlet core tube 205 and the oil inlet outer tube 216, and the centering block is concentrically fixed to the outer thread at the bottom of the oil inlet outer tube 216.
Fig. 4 shows a structure of an inlet device assembly according to an embodiment of the present invention.
As shown in fig. 4, the liquid inlet device assembly comprises a packer 301, a packer core tube 302 and a core tube liquid inlet device, wherein the packer 301 is sleeved on the packer core tube 302, the top end of the core tube liquid inlet device is connected with the bottom end of the packer 301, external threads are respectively processed at the top and the bottom of the packer 301, the external thread at the top of the packer 301 is connected with a tubing coupling 303, and the tubing coupling 303 at the top of the packer 301 is connected with the external thread at the bottom of the oil inlet outer tube 216.
The top and the bottom of the packer core pipe 302 are respectively provided with an outer sealing surface, the outer sealing surface at the top of the packer core pipe 302 is flush with the tubing coupling 303 at the top of the packer 301, and the inner sealing surface at the bottom of the oil inlet core pipe 205 is matched with the outer sealing surface at the top of the packer core pipe 302.
The core tube liquid inlet device comprises an outer tube 304 and a liquid inlet tube 305, wherein an inner sealing surface is arranged in the middle of the liquid inlet tube 305, the inner sealing surface of the liquid inlet tube 305 is matched with an outer sealing surface at the bottom of the packer core tube 302, a bottom plug 306 is arranged at the bottom of the liquid inlet tube 305, a liquid inlet channel 307 is arranged in the middle of the outer tube 304, the liquid inlet channel 307 is communicated with the space between the inside of the liquid inlet tube 305 and the outer tube 304, inner screw threads are respectively processed at the top and the bottom of the outer tube 304, the inner screw thread at the top of the outer tube 304 is connected with the outer screw thread at the bottom of the packer 301, and the inner screw thread at the bottom.
The above description details the structure of the casing separator provided by the present invention, and the working principle of the casing separator provided by the present invention is explained below, and the working principle of the casing separator is as follows:
the gas-liquid mixture enters the packer core pipe 302 through a liquid inlet channel 307 in the core pipe liquid inlet device and moves upwards to the separator core pipe 101 of the dual-channel gas-liquid mixture separator, the gas-liquid mixture enters the flow guide pipe 111 in the oil pipe annulus through the overflowing ring 110, the gas-liquid mixture entering the flow guide pipe 11 is subjected to cyclone separation along the upper spiral plate 106 and the lower spiral plate 107 of the gas-liquid mixture guide channel, the liquid moves downwards, the gas enters the dual-spiral plate airflow channel through a small hole in the inner side of the upper spiral plate 106, which is close to the oil pipe wall, and moves upwards to a well head.
The liquid separated by the double-channel gas-liquid mixing separator is further settled and separated. Specifically, after the liquid flows downwards through the oil pipe liquid inlet device 14 of the mixed gas-liquid transmission channel assembly and flows into the oil inlet outer pipe 216, sand sedimentation separation is carried out, and separated sand enters the sand settling pipe through the liquid inlet device assembly; and the liquid flows into the annular space between the oil inlet outer pipe 216 and the oil inlet core pipe 215 through the oil inlet hole 217 and moves upwards to the core pipe annular space of the double-channel gas-liquid mixer, finally enters the oil well pump and is pumped away by the oil well pump.
During well washing operation, well washing liquid is injected from a sleeve valve of a well mouth, and due to the action of the packer 301 and the core tube check valve, the well washing liquid can only enter an annular space between the oil inlet outer tube 216 and the oil inlet core tube 215 from the oil inlet 217, and then upwards enters the oil well pump and upwards travels to the ground.
During workover operation, the well head lifts the pipe column, the sliding sleeve inner pipe 213 moves downwards relative to the telescopic outer pipe 201 to the oil inlet 217 and is opened, liquid in the annular space between the sleeve on the upper portion of the packer 301 and the telescopic outer pipe 201 enters the annular space between the oil inlet outer pipe 216 and the oil inlet core pipe 215 through the oil inlet 217, then the liquid moves upwards to enter the separator core pipe 101 through the overflowing ring 4, and finally the liquid flows to the well bottom to achieve the unloading purpose.
In the present invention, the fitting of the inner seal surface and the outer seal surface means that the fixed connection is achieved by the frictional force therebetween.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A high gas-oil ratio oil well gas-liquid separation system, comprising: the device comprises a casing arranged in a well and a dual-channel gas-liquid mixing separator, a gas-liquid mixing transmission channel assembly and a liquid inlet device assembly which are arranged in the casing and sequentially connected through a tubing coupling from top to bottom, wherein the length of the casing is equal to the distance between a well head and a well bottom; wherein,
the double-channel mixed gas-liquid separator comprises a separator core pipe and a separator oil pipe which is sleeved on the separator core pipe and has the same length as the separator core pipe; a gap is reserved between the separator oil pipe and the separator core pipe to form a core pipe annulus, and a gap is reserved between the sleeve and the separator oil pipe to form an oil pipe annulus; an upper spiral plate and a lower spiral plate are arranged in the oil pipe annulus, the upper spiral plate and the lower spiral plate are respectively and tightly matched with the separator core pipe and the separator oil pipe, and a small hole is formed in the position, close to the pipe wall of the oil pipe, of the inner side of the upper spiral plate; the top ends of the upper spiral plate and the lower spiral plate are respectively provided with a vertical separation plate, an outlet is formed in the position, located on the vertical separation plate, of the pipe wall of the separator oil pipe, an overflowing ring which is used for communicating the inside of the separator core pipe with the annular space of the oil pipe is arranged on the outlet, and the vertical separation plate is located in the radial position of the separator oil pipe and is perpendicular to the radial direction of the overflowing ring; flow guide pipes are sleeved at the top ends of the upper spiral plate and the lower spiral plate, a half-moon-shaped flow guide pipe end socket which is flush with the top end of the flow guide pipe is arranged at one side, located on the overflowing ring, of the top end of the flow guide pipe, and the vertical separation plate, the flow guide pipe and the half-moon-shaped flow guide pipe end socket form a cavity which is opened downwards in the oil pipe annulus; protecting cylinders with hollow bottoms are sleeved at the bottom ends of the upper spiral plate and the lower spiral plate; a core tube end socket is arranged at the top end inside the separator core tube;
the mixed gas-liquid transmission channel assembly comprises a core tube check valve, an oil pipe oil inlet device, a core tube sliding sleeve and a telescopic tube; the telescopic pipe comprises a telescopic outer pipe and a transmission oil pipe, the transmission oil pipe is connected with the oil pipe oil feeding device through the core pipe sliding sleeve, and the telescopic outer pipe is sleeved on the transmission oil pipe and the oil pipe oil feeding device;
the liquid inlet device assembly comprises a packer, a packer core pipe and a core pipe liquid inlet device, wherein the packer is sleeved on the packer core pipe, and the top end of the core pipe liquid inlet device is connected with the bottom end of the packer.
2. The high gas-oil ratio oil well gas-liquid separation system of claim 1,
an outer screw thread is processed at the bottom of the transmission oil pipe, a transmission core pipe is arranged in the transmission oil pipe, an inner sealing surface is processed at the bottom of the transmission core pipe, a sliding coupling is connected to the top of the telescopic outer pipe, an inner screw thread is processed at the bottom of the telescopic outer pipe, and a gap is reserved between the inner wall of the sliding coupling and the transmission oil pipe;
the core tube check valve comprises a core tube check valve outer sleeve, an inner screw thread is processed at the top of the core tube check valve outer sleeve, a core tube check valve sleeve is arranged in the core tube check valve outer sleeve, an inner screw thread is processed at the bottom of the core tube check valve sleeve, a valve cover pressing cap, a valve cover, a valve ball and a valve seat are sequentially arranged in the core tube check valve sleeve from top to bottom, an outer sealing surface which is flush with the core tube check valve outer sleeve is processed at the top of the valve cover pressing cap, and an outer sealing surface at the top of the valve cover pressing cap is matched with an inner sealing surface at the bottom of the transmission core tube; the inner screw thread at the top of the core pipe check valve outer sleeve is connected with the outer screw thread at the bottom of the transmission oil pipe;
the core tube sliding sleeve comprises a sliding sleeve outer tube and a sliding sleeve inner tube, the sliding sleeve inner tube is connected with the core tube single flow valve sleeve through an inner screw thread at the bottom of the core tube single flow valve sleeve, and an oil unloading hole is formed in the tube wall of the sliding sleeve inner tube; the sliding sleeve outer pipe is sleeved on the sliding sleeve inner pipe, an inner sealing surface in sliding sealing fit with the sliding sleeve inner pipe is arranged at the top of the sliding sleeve outer pipe, and an inner screw thread is arranged at the bottom of the sliding sleeve outer pipe;
the oil inlet device of the oil pipe comprises an oil inlet core pipe and an oil inlet outer pipe, wherein an outer screw thread is processed at the top of the oil inlet core pipe, an inner screw thread at the bottom of the sliding sleeve outer pipe is connected with the outer screw thread at the top of the oil inlet core pipe, an oil inlet hole is formed in the middle of the oil inlet outer pipe, an outer screw thread is processed at the top of the oil inlet outer pipe, and the outer screw thread at the top of the oil inlet outer pipe is connected with the inner screw thread at the bottom of the telescopic outer pipe.
3. The high gas-oil ratio oil well gas-liquid separation system of claim 2,
an outer screw thread is processed at the bottom of the separator oil pipe, and an inner sealing surface is processed at the bottom of the separator core pipe;
the top of the transmission core pipe is processed with an outer sealing surface, the top of the transmission oil pipe is processed with an outer screw thread, the transmission oil pipe is connected with an oil pipe coupling through the outer screw thread of the transmission oil pipe, the top surface of the oil pipe coupling is flush with the outer sealing surface of the top of the transmission core pipe, the oil pipe coupling is connected with the outer screw thread of the bottom of the separator oil pipe, and the outer sealing surface of the top of the transmission core pipe is matched with the inner sealing surface of the bottom of the separator core pipe.
4. The high gas-oil ratio oil well gas-liquid separation system of claim 3,
the outer diameter of the oil pipe coupling and the core pipe check valve outer sleeve is slightly smaller than the inner diameter of the telescopic outer pipe.
5. The high gas-oil ratio oil well gas-liquid separation system of claim 2,
a centering block is arranged between the oil inlet core pipe and the oil inlet outer pipe, and the centering block is concentrically fixed with an outer screw thread at the bottom of the oil inlet outer pipe; and the number of the first and second groups,
a flow guide pipe righting plate is arranged at the top end of the flow guide pipe;
and a protective cylinder righting plate is arranged at the bottom of the protective cylinder.
6. The high gas-oil ratio oil well gas-liquid separation system of claim 2,
an inner sealing surface is processed at the bottom of the oil inlet core pipe;
an outer screw thread is processed at the bottom of the oil inlet outer pipe;
the top and the bottom of the packer are respectively provided with an external screw thread, the external screw thread at the top of the packer is connected with an oil pipe coupling, and the oil pipe coupling at the top of the packer is connected with the external screw thread at the bottom of the oil inlet outer pipe;
the top and the bottom of the packer core pipe are respectively provided with an outer sealing surface, the outer sealing surface at the top of the packer core pipe is flush with an oil pipe coupling at the top of the packer, and the inner sealing surface at the bottom of the oil inlet core pipe is matched with the outer sealing surface at the top of the packer core pipe;
the core pipe inlet means includes urceolus and feed liquor core pipe the interior middle part of advancing the liquid core pipe is provided with the internal seal face, the internal seal face of feed liquor core pipe with the cooperation of the external seal face of packer core pipe bottom the bottom of advancing the intraductal liquid core is provided with end stifled the middle part of urceolus is provided with inlet channel, inlet channel intercommunication feed liquor core pipe inside with space between the urceolus the top and the bottom of urceolus are processed respectively and are had interior screw thread, the interior screw thread at urceolus top with the outer screw thread of packer bottom is connected.
7. The high gas-oil ratio oil well gas-liquid separation system of claim 6,
and the inner screw thread at the bottom of the outer barrel is connected with the sand setting pipe.
8. The high gas-oil ratio oil well gas-liquid separation system of claim 2,
and the positions, close to the top and the bottom, in a gap formed between the transmission oil pipe and the transmission core pipe are respectively provided with a righting block, and the righting blocks and the transmission core pipe are concentrically fixed.
9. The high gas-oil ratio oil well gas-liquid separation system of claim 1,
and the positions close to the top and the bottom in the core tube annulus are respectively provided with a centering block, and the centering blocks and the separator core tube are concentrically fixed.
10. The high gas-oil ratio oil well gas-liquid separation system of claim 1,
an outer screw thread is processed at the top end of the separator core tube and connected with an oil pipe coupling, and the oil pipe coupling is connected with an oil well pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610996447.8A CN106285620B (en) | 2016-11-13 | 2016-11-13 | High gas-oil ratio (HGOR) oil well gas-liquid piece-rate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610996447.8A CN106285620B (en) | 2016-11-13 | 2016-11-13 | High gas-oil ratio (HGOR) oil well gas-liquid piece-rate system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106285620A true CN106285620A (en) | 2017-01-04 |
| CN106285620B CN106285620B (en) | 2018-08-14 |
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| CN201610996447.8A Active CN106285620B (en) | 2016-11-13 | 2016-11-13 | High gas-oil ratio (HGOR) oil well gas-liquid piece-rate system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533243A (en) * | 2018-03-16 | 2018-09-14 | 中国科学院力学研究所 | A kind of underground gas-liquid separator |
| 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 |
| CN114382440A (en) * | 2022-01-05 | 2022-04-22 | 烟台杰瑞石油装备技术有限公司 | Oil extraction device |
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| CN206144550U (en) * | 2016-11-13 | 2017-05-03 | 重庆科技学院 | High gas -oil is than oil well gas -liquid separation system |
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| GB2500845A (en) * | 2010-12-30 | 2013-10-02 | Cameron Int Corp | A method for controlling the flow of fluid within a bulk rotating fluid stream |
| CN202012341U (en) * | 2011-04-25 | 2011-10-19 | 高淑梅 | High efficiency gas anchor for screw pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533243A (en) * | 2018-03-16 | 2018-09-14 | 中国科学院力学研究所 | A kind of underground gas-liquid separator |
| 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 |
| CN114382440A (en) * | 2022-01-05 | 2022-04-22 | 烟台杰瑞石油装备技术有限公司 | Oil extraction device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106285620B (en) | 2018-08-14 |
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