CN114458282A - Gas quantity measuring device for underground gas distributing well head of oil well - Google Patents
Gas quantity measuring device for underground gas distributing well head of oil well Download PDFInfo
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- CN114458282A CN114458282A CN202011135507.XA CN202011135507A CN114458282A CN 114458282 A CN114458282 A CN 114458282A CN 202011135507 A CN202011135507 A CN 202011135507A CN 114458282 A CN114458282 A CN 114458282A
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- 239000003129 oil well Substances 0.000 title claims abstract description 38
- 238000000926 separation method Methods 0.000 claims abstract description 76
- 238000005520 cutting process Methods 0.000 claims abstract description 28
- 238000009826 distribution Methods 0.000 claims abstract description 26
- 230000005484 gravity Effects 0.000 claims abstract description 19
- 238000009792 diffusion process Methods 0.000 claims abstract description 18
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 239000006185 dispersion Substances 0.000 claims abstract description 12
- 238000007580 dry-mixing Methods 0.000 claims abstract description 12
- 238000005086 pumping Methods 0.000 claims abstract description 12
- 239000004576 sand Substances 0.000 claims abstract 4
- 239000007788 liquid Substances 0.000 claims description 50
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 230000008878 coupling Effects 0.000 claims description 16
- 238000010168 coupling process Methods 0.000 claims description 16
- 238000005859 coupling reaction Methods 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims 2
- 230000007547 defect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 114
- 239000003921 oil Substances 0.000 description 71
- 239000012530 fluid Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 210000002445 nipple Anatomy 0.000 description 8
- 230000009467 reduction Effects 0.000 description 7
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- 239000012071 phase Substances 0.000 description 6
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- 238000009434 installation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
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- 230000001174 ascending effect Effects 0.000 description 1
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- 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
- E21B43/34—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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- 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
- E21B43/02—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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Abstract
The invention relates to the field of oil-gas field pumping well metering, in particular to a measuring device for an underground gas distribution well mouth of an oil well. The device comprises a wellhead constant-pressure depressurization gas collecting device, an underground primary precession vortex sand outlet separating device, an underground secondary acoustic wave cutting diffusion dispersion separating device, an underground tertiary gravity separation pump inlet gas distributing device and a ground gas measurement gas collection inlet dry mixing conveying device; the wellhead constant-pressure-reducing gas-collecting device comprises a sleeve, a wellhead four-way, a sleeve valve, a gas-distributing joint, a sleeve pressure transmitter, a constant-pressure check valve and an air pump; the wellhead four-way joint is arranged on a sleeve, and the gas distribution joint is respectively connected with a sleeve valve, a sleeve pressure transmitter, a constant pressure check valve and an air pump; the underground primary precession vortex sand outlet separation device, the underground secondary sound wave cutting diffusion dispersion separation device and the underground tertiary gravity separation pump inlet gas distribution device are sequentially connected and arranged in the sleeve. The device can simultaneously realize the functions of measuring air volume, avoiding air lock, preventing scale and wax, and overcomes the defects.
Description
Technical Field
The invention relates to the field of oil-gas field pumping well metering, in particular to a measuring device for an underground gas distribution well mouth of an oil well.
Background
At present, the method for logging gas in a single oil well mainly adopts a separator liquid discharge method and a secondary flowmeter method, the main installation mode is a fixed type, the application frequency is reduced, and the method is mainly used for verifying solid liquid and gas. The movable single-well metering vehicle can realize single-well gas measurement, but because the number of wells is large, the hauling installation is extremely inconvenient, the installation needs to be stopped, some wells with mass flow meters and vortex shedding flow meters are not suitable, some gas flow meters are bad, and the gas quantity can not be measured only by liquid measurement. The indicator diagram does not need an oil measuring device for measuring the yield, thereby bringing great convenience to liquid measurement, but not measuring the gas yield. Meanwhile, if the liquid level is low and the sinking degree is small, the high sleeve pressure can cause the reduction of the pump efficiency or air lock; for an oil well with casing pressure lower than back pressure, the oil casing can not be communicated with a casing pipe to enter a pipeline, and if the pump efficiency is reduced or air lock is caused by air influence, the measures of opening the casing pipe are adopted, so that the atmospheric pollution and waste are caused.
In the process of oil reservoir development, when the gas content exceeds 60%, the gas-liquid two-phase content changes in a shaft due to gas-liquid two-phase speed slip. When the gas-liquid two-phase with the changed gas content is used in the oil pumping process of an oil well pump, the gas lock phenomenon can be caused, and even the failure of the pump can be caused seriously. Therefore, the gas-liquid separation is carried out by utilizing the underground gas-liquid separator underground, and water is separated from gas, so that the gas lock phenomenon is avoided. In severe cases, even "airlock" can occur. When the air lock phenomenon occurs, "hydraulic impact" can also occur, so that the vibration of the rod pumping system is caused, and the damage of the rod pumping system is accelerated.
In the middle and later oil wells in oil field exploitation or the oil wells with low dynamic liquid level (especially the oil wells with high gas-liquid ratio), gas is a main factor influencing the pumping efficiency of an oil well pump. The air occupies part of the volume of the pump cavity, and can reduce the fullness in the pump cavity, so that the opening of a valve ball of the oil well pump is delayed, and the pump efficiency is reduced. These undesirable results can result in frequent pumping well operations, which can lead to shorter pump cycle times and increased development costs.
The method provides a detailed data base for formulating the excavation and submerging measures, and the measurement on the ground at present has the following problems by taking the natural gas capacity of the oil well: firstly, in order to shorten the pipeline distance, part of pumping wells directly touch the gathering and transportation trunk line, and the in-station metering cannot be carried out; secondly, a separator and a flowmeter cannot be installed on a wellhead casing pipe for gas measurement of an oil well which enters the station well and has casing pressure lower than back pressure; thirdly, a separator and a flowmeter gas measuring device are installed at the wellhead, and the large-scale investment is high; and fourthly, the wellhead moving single-well metering device meets the requirement of multi-well metering of one device, but needs repeated disassembly and assembly, frequently stops a well, and wastes time and labor.
Aiming at the problems that the gas cannot be measured by indicator diagram production, the gas lock of an oil well pump is prevented, the pump efficiency is improved, thick oil is not easy to separate from oil and gas, and the separator part is scaled and waxed, the current common mode is to install a downhole gas-liquid separator and a viscosity reduction and scale prevention device under a pump. The utility model discloses a chinese utility model CN210798949U discloses an oil gas well head gas measuring device, and the device includes flat nipple joint and No. two flat nipple joints, flat nipple joint one side is provided with the stop valve, and a flat nipple joint top passes through threaded connection flat coupling, the tee bend nipple joint cover is connected through the external screw thread short circuit on flat coupling top, tee bend nipple joint cover bottom air inlet department passes through glib talker mount pad installation throttling oil nozzle, and tee bend glib talker cover one side passes through threaded connection flat nipple joint No. two, No. two flat nipple joint one end is passed through ring flange and bolted connection flowmeter, and the device can realize the swift gas measurement of gas well head.
The Chinese patent application CN110173254A provides a downhole double-cylinder single-stage adjustable gas-liquid separator, which comprises an outer cylinder and an inner cylinder which are sleeved with each other, wherein an impeller and a liquid discharge section are arranged in the inner cylinder; a separation baffle is arranged below the gas phase outlet at the top of the outer cylinder, and a gravity separation chamber is arranged between the inner cylinder and the gas phase outlet; the side wall of the lower part of the outer cylinder body is provided with a liquid phase outlet, the controller acquires the pressure difference measured by the differential pressure sensor in real time, compares the pressure difference measured in real time with the set pressure difference, and drives the motor to control the size of the liquid phase outlet according to the comparison result. The invention realizes primary separation by matching the impeller and the liquid discharge section, and realizes secondary separation by depending on the gravity separation chamber; the separation baffle is utilized to realize the third separation; the three separation principles of centrifugal separation, gravity separation and collision separation are organically combined, the size is small, the structure is compact, and high-efficiency separation of gas-liquid mixtures can be realized under wider gas-phase and liquid-phase processes.
The chinese utility model patent CN206376853U discloses a gas-liquid separator for underground same well production, which comprises a gas-liquid separation main body, a gas-liquid separation cover and a gas-liquid outer spiral body; the gas-liquid separation main body is positioned in a cavity defined by the upper shell, the liquid inlet shell and the lower shell, and is formed by sequentially connecting an upper transmission shaft of the gas-liquid separation main body, a flow guide section of the gas-liquid separation main body, an inverted cone section of the gas-liquid separation main body and a lower transmission shaft of the gas-liquid separation main body from top to bottom; a guide vane is welded outside the guide section of the gas-liquid separation main body; an air inlet is arranged on the inverted cone section of the gas-liquid separation main body, and the outlet of the air hole channel is positioned in the inner cavity of the upper shell; the gas-liquid separating hood is in a hollow inverted frustum shape, and the gas-liquid outer spiral body is also in a hollow inverted frustum shape.
However, the existing underground gas-liquid separator has unsatisfactory and incomplete gas-liquid separation effect, poor separation effect and incapability of fully allowing gas to enter the oil sleeve annulus, so that gas and liquid are easily mixed again after separation and enter an oil well pump; the viscosity-reducing, anti-scaling and anti-waxing device has the functions of reducing viscosity and preventing scale but cannot distribute gas. If the air output of the oil sleeve ring is directly measured on the ground, the measured air quantity is inaccurate and less because the gas-liquid separation effect is incomplete.
Disclosure of Invention
The invention mainly aims to provide an oil well underground gas distribution wellhead measuring device which can simultaneously realize gas measurement, avoid gas lock, prevent scaling and prevent wax deposition and overcome the defects.
In order to achieve the purpose, the invention adopts the following scheme:
the invention provides an oil well underground gas distribution wellhead measuring device, which comprises a wellhead constant-pressure depressurization gas collection device, an underground primary precession vortex desanding and separating device, an underground secondary sound wave cutting diffusion dispersing and separating device, an underground tertiary gravity separation pump inlet gas distribution device and a ground gas measurement gas collection inlet dry mixing and conveying device, wherein the underground gas distribution wellhead constant-pressure depressurization gas collection device is connected with the underground primary precession vortex desanding and separating device;
the wellhead constant-pressure-reducing gas-collecting device comprises a sleeve, a wellhead four-way, a sleeve valve, a gas-distributing joint, a sleeve pressure transmitter, a constant-pressure check valve and an air pump; the well head four-way joint is arranged on a sleeve, and the gas distribution joint is respectively connected with a sleeve valve, a sleeve pressure transmitter, a constant pressure check valve and an air pump;
the underground primary precession vortex desanding and separating device, the underground secondary sound wave cutting diffusion dispersing and separating device and the underground tertiary gravity separation pump inlet gas distributing device are sequentially connected and are arranged in the sleeve;
the ground gas-measuring gas-collecting dry-mixing conveying device is connected with a wellhead four-way valve.
Preferably, the downhole primary precession vortex sand-outlet separation device comprises a plug, a tail pipe, a primary oil inlet liquid thin pipe and an air outlet pipe; the air outlet pipe is connected with the tail pipe; the primary oil inlet thin tube is arranged in a cavity formed by the tail tube; the bottom end of the cavity formed by the tail pipe is sealed by a plug.
Further preferably, the tail pipe is symmetrically provided with two primary oil inlet holes, and the joint of the air outlet pipe and the tail pipe is provided with a primary air outlet hole.
Further preferably, a spiral sheet is arranged in the primary oil inlet thin tube.
The underground primary precession vortex desanding separation device has the functions of primary gas-liquid separation and desanding of entering fluid, the fluid in the well enters a primary oil inlet hole and is separated by a spiral plate, the gas goes up to a primary gas outlet hole and enters a gas outlet pipe, and oil enters a primary oil inlet liquid thin pipe and rises to an underground secondary sound wave cutting diffusion dispersion separation part.
Preferably, the underground secondary acoustic cutting diffusion dispersion separation device comprises a fixing rib, a fixing rod, a connecting pipe, a longitudinal cutting plate, a transverse baffle, a first-stage throat pipe, a second-stage throat pipe and a sieve plate; the fixed rod, the connecting pipe, the longitudinal cutting plate, the transverse baffle, the primary throat pipe, the secondary throat pipe and the sieve plate are sequentially connected; the fixed rod is connected to the tail pipe through a fixed rib.
Further preferably, the fixed rod is provided with a plurality of vibrating steel sheets; the vibrating steel sheet and the fixed rod are at an angle of 45 degrees in the vertical direction and are distributed on two sides of the fixed rod.
The underground secondary sound wave cutting diffusion dispersion separation device has the functions of performing scale prevention, wax prevention, cutting, subdivision, viscosity reduction, diffusion decomposition and gas separation on the primary separated fluid, wherein the primary separated fluid enters the primary throat pipe and the secondary throat pipe through the vibrating steel sheet, the connecting pipe, the longitudinal cutting plate and the transverse baffle plate, and then rises to the underground tertiary gravity separation pump gas inlet and distribution part through the sieve plate.
Preferably, the underground triple gravity separation pumping gas distribution device comprises a fixing plate, a conversion coupling, a secondary oil outlet pipe and a lower pump pipe joint; the fixed plate is connected through the conversion coupling, and the fixed plate is connected with secondary oil outlet pipe, and secondary oil outlet pipe is connected with pump line lower clutch.
Further preferably, the fixing plate is provided with a plurality of plate holes, the air outlet pipe is connected with the fixing plate, and a secondary oil inlet hole and a secondary air outlet hole are formed near the connecting port; and a secondary oil outlet hole is formed in the secondary oil outlet pipe.
The underground triple gravity separation pump-in gas-distributing device has the functions of re-separating the fluid of secondary separation, ensuring that the gas content in the liquid is close to zero, re-separating the fluid plate hole and the secondary oil inlet hole of the secondary separation, enabling the separated liquid to ascend through the secondary oil outlet hole and the secondary oil outlet pipe to enter an oil well pump, and enabling the separated gas to enter a wellhead constant-pressure-reducing gas-collecting part through a secondary gas outlet hole.
Preferably, the ground gas measurement gas collection and dry mixing transmission device comprises a precession vortex flowmeter, a bypass valve, a check valve, a wellhead pipeline, a back pressure valve, a choke sleeve, a production valve and a small tee joint; the precession vortex flowmeter is respectively connected with the constant-pressure check valve, the air extraction pump, the bypass valve and the check valve through pipelines; the bypass valve is also respectively connected with a constant-pressure check valve, an air extraction pump and a check valve through pipelines, and the check valve is connected with a wellhead pipeline; the small tee joint is connected with the wellhead four-way joint, the small tee joint, the production valve, the choke sleeve and the wellhead pipeline are sequentially connected, and the wellhead pipeline is also connected with the back pressure valve.
The ground gas-collecting and gas-feeding dry-mixing conveying device has the functions of metering and recovering gas passing through a wellhead constant-pressure-reducing gas-collecting part, and feeding the gas passing through a constant-pressure check valve or an air pump into a wellhead pipeline for gas collection through a precession vortex flowmeter or a bypass valve or a check valve. The liquid from the secondary oil outlet pipe rises into the oil pump and then enters the ground oil collecting pipeline through the wellhead four-way, the small three-way, the production valve, the oil nozzle sleeve, the wellhead pipeline and the back pressure valve.
The tail pipe is in threaded connection with the connecting pipe through the fixed rod pipe body, the connecting pipe is in threaded connection with the first-stage throat pipe body and the second-stage throat pipe body through the transverse baffle pipe body, the first-stage throat pipe body and the second-stage throat pipe body are in threaded connection with the conversion coupling pipe body through the sieve plate pipe body, and the conversion coupling 18 pipe body is in threaded connection with the secondary oil outlet pipe.
The casing pressure transmitter has an infinite transmission function, and the well site RTU acquires casing pressure data and transmits the casing pressure data to the PCS system through the network bridge and the base station.
The precession vortex flowmeter has an infinite transmission function, and gas quantity data collected by a well site RTU is transmitted to a PCS system through a network bridge and a base station.
Compared with the prior art, the invention has the following advantages:
(1) the device can efficiently separate underground gas and liquid, so that the gas content in the well liquid is zero; the separated natural gas quickly enters the oil sleeve annulus and rises to the wellhead.
(2) The device avoids the air lock of the oil well pump and improves the pump efficiency; after underground crude oil enters the device and is subjected to degassing and desanding through three times of separation such as primary precession vortex desanding separation, secondary sound wave cutting diffusion dispersion separation, and three times of gravity separation, the gas-free crude oil enters the oil well pump, so that natural gas is prevented from expanding in the oil well pump, the filling coefficient of the oil well pump is improved, and the air lock of the oil well pump is avoided.
(3) The device can prevent wax precipitation and scale formation for thick oil wells, wax precipitation wells and scale formation wells, and realize full gas-liquid separation.
(4) The device has no separation device on the ground, directly and continuously measures gas at a wellhead, and is simple, safe and reliable; the device can also monitor the casing pressure and collect the gas production rate remotely; and when the casing pressure is lower than the back pressure, the air pump is started, the air distribution measurement is carried out, the submergence is increased, and the single-well yield is improved. After the device is applied to a gas production well, the gas quantity metering detection rate of the gas production well mouth of the gas production well is 100%, the pumping efficiency of the gas production well mouth of the gas production well is improved by 5%, the full-standard rate of oil well data is 100%, dynamic analysis is met, dynamic problems and potentials of an oil reservoir are found in time, and annual oil increase is predicted to be 0.15 ten thousand tons. Reducing the pressure and increasing the yield of casing gas, predicting 0.1 ten thousand tons of annual oil increase, predicting 0.25 ten thousand tons of annual oil increase, and calculating according to 1000 yuan of profit of internal ton oil, wherein the annual effect is generated: 250-10 ═ 240 ten thousand yuan.
(5) The device is popularized and applied to the gas production oil well mouth without a gas measurement metering device, solves the problem that the gas measurement cannot be carried out by indicator diagram metering after a metering station is cancelled, and has extremely high application value.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic view of an oil well downhole gas separation wellhead measuring device according to an embodiment of the invention.
In the figure, 1, a plug, 2, a tail pipe, 3, a spiral sheet, 4, a primary oil inlet thin pipe, 5, a primary oil inlet hole, 6, a primary air outlet hole, 7, an air outlet pipe, 8, a fixing rib, 9, a fixing rod, 10, a vibrating steel sheet, 11, a connecting pipe, 12, a longitudinal cutting plate, 13, a transverse baffle, 14, a primary throat pipe, 15, a secondary throat pipe, 16, a sieve plate, 17, a fixing plate, 18, a conversion coupling, 19, a secondary oil outlet hole, 20, a secondary oil outlet pipe, 21, a pump pipe lower connector, 22, a plate hole, 23, a secondary oil inlet hole, 24, a secondary air outlet hole, 25, a sleeve, 26, a sleeve valve, 27, a gas distribution connector, 28, a sleeve pressure transmitter, 29, a constant pressure check valve, 30, an air suction pump, 31, a rotary vortex flowmeter, 32, a bypass valve, 33, a check valve, 34, a wellhead pipeline, 35, a four-way back pressure valve, 36, 37, a small tee joint, 38, a production valve, 39. And an oil nozzle sleeve.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. 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 invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, and/or combinations thereof, unless the context clearly indicates otherwise.
In order to make the technical solutions of the present invention more clearly understood by those skilled in the art, the technical solutions of the present invention will be described in detail below with reference to specific embodiments.
Examples
As shown in fig. 1, the oil well downhole gas separation wellhead measuring device comprises: the device comprises a wellhead constant-pressure depressurization gas collecting device, an underground primary precession vortex desanding and separating device, an underground secondary acoustic wave cutting diffusion and dispersion and separation device, an underground tertiary gravity separation pump inlet gas distributing device and a ground gas measurement gas collection inlet dry mixing and conveying device;
the wellhead constant-pressure-reducing gas-collecting device comprises a sleeve 25, a wellhead four-way 36, a sleeve valve 26, a gas-distributing joint 27, a casing pressure transmitter 28, a constant-pressure check valve 29 and an air pump 30; the wellhead four-way 36 is arranged on the casing 25, and the gas distribution joint 27 is respectively connected with the casing valve 26, the casing pressure transmitter 28, the constant pressure check valve 29 and the air pump 30;
the underground primary precession vortex desanding and separating device, the underground secondary sound wave cutting diffusion dispersing and separating device and the underground tertiary gravity separation pump inlet gas distributing device are sequentially connected and arranged in the sleeve.
The wellhead constant pressure and pressure reduction gas collecting device has the functions that gas in the sleeve enters the ground through wellhead control, the separated gas passes through the sleeve 25, the wellhead four-way 36, the sleeve valve 26 and the gas distribution joint 27, and when the sleeve pressure is greater than the constant pressure value of the constant pressure check valve 29 or the sleeve pressure is greater than the back pressure, the gas passes through the constant pressure check valve 29; when the sleeve pressure is smaller than the constant pressure value of the constant pressure check valve 29 or the sleeve pressure is smaller than the back pressure, the gas enters the dry mixing transmission part through the air suction pump 30 and the ground gas collection and collection.
The underground primary precession vortex desanding separation device comprises a plug 1, a tail pipe 2, a primary oil inlet thin pipe 4 and an air outlet pipe 7; the air outlet pipe 7 is connected with the tail pipe 2; the primary oil inlet thin tube 4 is arranged in a cavity formed by the tail tube 2; the bottom end of the cavity formed by the tail pipe 2 is closed by a plug 1.
Two primary oil inlet holes 5 are symmetrically arranged on the tail pipe 2, and a primary air outlet hole 6 is arranged at the joint of the air outlet pipe 7 and the tail pipe 2. The helical fin 3 is arranged in the primary oil inlet thin tube 4.
The underground primary precession vortex desanding separation device is used for performing primary gas-liquid separation and desanding on entering fluid, the fluid in the well enters a primary oil inlet 5 and is separated by a spiral plate 3, the gas enters an air outlet pipe 7 from an upper primary air outlet 6, and oil enters a primary oil inlet thin pipe 4 and rises to an underground secondary sound wave cutting diffusion dispersion separation part. The tail pipe 2 is in threaded connection with the connecting pipe 11 through the fixing rod 9, the connecting pipe 11 is in threaded connection with the first-stage throat pipe 14 and the second-stage throat pipe 15 through the transverse baffle 13, the first-stage throat pipe 14 and the second-stage throat pipe 15 are in threaded connection with the conversion coupling 18 through the sieve plate 16, and the conversion coupling 18 is in threaded connection with the secondary oil outlet pipe 20.
The underground secondary sound wave cutting, diffusion, dispersion and separation device comprises fixing ribs 8, fixing rods 9, connecting pipes 11, longitudinal cutting plates 12, transverse baffle plates 13, a primary throat pipe 14, a secondary throat pipe 15 and a sieve plate 16; the fixed rod 9, the connecting pipe 11, the longitudinal cutting plate 12, the transverse baffle 13, the primary throat pipe 14, the secondary throat pipe 15 and the sieve plate 16 are connected in sequence; the fixing rod 9 is connected to the tail pipe 2 through a fixing rib 8.
A plurality of vibrating steel sheets 10 are arranged on the fixed rod 8; the vibrating steel sheets 10 and the fixed rod 9 are at an angle of 45 degrees in the vertical direction and are distributed on two sides of the fixed rod 9.
The secondary sound wave cutting diffusion dispersion separation device has the functions of performing scale prevention and wax prevention, cutting subdivision viscosity reduction, diffusion decomposition and gas separation on the primary separated fluid, enabling the primary separated fluid to enter a primary throat pipe 14 and a secondary throat pipe 15 through a vibrating steel sheet 10, a connecting pipe 11, a longitudinal cutting plate 12 and a transverse baffle 13, and then ascending to a pumping gas separation part through a sieve plate 16 for three times of gravity separation.
The underground triple gravity separation pump inlet gas distribution device comprises a fixing plate 17, a conversion coupling 18, a secondary oil outlet pipe 20 and a pump pipe lower joint 21; the tube body of the fixed plate 17 is connected with the tube body of the sieve plate 16 through the tube body of the conversion coupling 18, the fixed plate 17 is connected with a secondary oil outlet pipe 20, the secondary oil outlet pipe 20 is connected with a lower pump pipe joint 21, and the lower pump pipe joint 21 is in threaded connection with an upper pipe pump.
The fixed plate 17 is provided with a plurality of plate holes 22, the air outlet pipe 7 is connected with the fixed plate 17, and a secondary oil inlet hole 23 and a secondary air outlet hole 24 are arranged near the connecting port; the secondary oil outlet pipe 20 is provided with a secondary oil outlet hole 19.
The underground triple gravity separation pump inlet gas distribution device has the functions of re-separating the fluid subjected to secondary separation, ensuring that the gas content in the liquid is close to zero, re-separating the fluid plate hole 22 and the secondary oil inlet hole 23 subjected to secondary separation, enabling the separated liquid to ascend through the secondary oil outlet hole 19 and the secondary oil outlet pipe 20 to enter an oil well pump, and enabling the separated gas secondary gas outlet hole 24 to enter the gas outlet pipe 7 and enter a wellhead constant pressure reduction gas collection part.
The ground gas measurement gas collection and inlet dry mixing transmission device comprises a precession vortex flowmeter 31, a bypass valve 32, a check valve 33, a wellhead pipeline 34, a back pressure valve 35, an oil nozzle sleeve 39, a production valve 38 and a small tee joint 37; the precession vortex flowmeter 31 is respectively connected with the constant pressure check valve 29, the air pump 30, the bypass valve 32 and the check valve 33 through pipelines; the bypass valve 32 is also respectively connected with a constant pressure check valve 29, an air pump 30 and a check valve 33 through pipelines, and the check valve 33 is connected with a wellhead pipeline 34; the small tee joint 37 is connected with a wellhead four-way joint 36, the small tee joint 37, a production valve 38, an oil nozzle sleeve 39 and a wellhead pipeline 34 are sequentially connected, and the wellhead pipeline 34 is further connected with a back pressure valve 35.
The ground gas measurement gas collection and inlet dry mixing transmission device has the function of metering and recovering gas after passing through a wellhead constant-pressure reduction gas collection part, and the gas passing through a constant-pressure check valve 29 or a gas extraction pump 30 enters a wellhead pipeline 34 for gas collection through a precession vortex flowmeter 31 or a bypass valve 32 and a check valve 33. The liquid through the secondary oil outlet pipe 20 rises into the oil pump and enters the ground oil collecting pipeline through the wellhead four-way 36, the small three-way 37, the production valve 38, the oil nozzle sleeve 39, the wellhead pipeline 34 and the back pressure valve 35.
Example 2
Method of use of the device described in example 1: in the production process, crude oil enters the underground primary-precession vortex sand-discharging separation device through a tail pipe 2, then sequentially passes through a spiral plate 3, a primary-separated oil-water inlet oil-liquid thin pipe 4 and a primary-separated gas inlet and outlet gas pipe 7, and sequentially passes through a vibrating steel sheet 10, a connecting pipe 11, a longitudinal cutting plate 12, a transverse baffle 13, a primary throat pipe 14, a secondary throat pipe 15, a sieve plate 16, a conversion coupling 18, a secondary-separated oil-water inlet secondary oil-outlet hole 19 and a secondary-separated gas inlet secondary air-outlet hole 24. The oil water separated in the second time enters the oil pump through the second oil outlet 19, enters the wellhead pipeline 34 through the wellhead four-way 36, the small three-way 37, the production valve 38 and the oil nozzle sleeve 39 in sequence, and is output through the back pressure valve 35. The gas separated secondarily passes through the secondary gas outlet hole 24 and is mixed with the gas separated primarily to enter and exit the gas pipe 7, and then is output through a sleeve 25, a sleeve valve 26, a gas distribution joint 27, a sleeve pressure transmitter 28, a constant pressure check valve 29, a suction pump 30, a precession vortex flowmeter 31 or a bypass valve 32 and a check valve 33 in a wellhead pipeline 34.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. An oil well is DH to divide the gas wellhead measuring device, characterized by that, it includes the constant pressure depressurizes the gas collecting device of the well head, once precession whirlpool go out of the sand separator in the pit, secondary acoustic wave cutting diffusion disperse separator in the pit, three times of gravity separation enter pump gas-distributing device, ground survey gas receive gas enter dry mixing transport unit in the pit;
the wellhead constant-pressure-reducing gas-collecting device comprises a sleeve, a wellhead four-way, a sleeve valve, a gas-distributing joint, a sleeve pressure transmitter, a constant-pressure check valve and an air pump; the wellhead four-way joint is arranged on a sleeve, and the gas distribution joint is respectively connected with a sleeve valve, a sleeve pressure transmitter, a constant pressure check valve and an air pump;
the underground primary precession vortex sand outlet separation device, the underground secondary sound wave cutting diffusion dispersion separation device and the underground tertiary gravity separation pump inlet gas distribution device are sequentially connected and are arranged in the sleeve;
the ground gas-measuring gas-collecting dry-mixing conveying device is connected with a wellhead four-way valve.
2. The oil well downhole gas-distributing wellhead measuring device according to claim 1, wherein the downhole primary precession vortex sand-out separating device comprises a plug, a tail pipe, a primary oil inlet liquid thin pipe and an air outlet pipe; the air outlet pipe is connected with the tail pipe; the primary oil inlet thin tube is arranged in a cavity formed by the tail tube; the bottom end of the cavity formed by the tail pipe is sealed by a plug.
3. The downhole gas-distributing wellhead measuring device for oil well according to claim 2, wherein two primary oil inlets are symmetrically provided on the tail pipe, and a primary gas outlet is provided at the junction of the gas outlet pipe and the tail pipe.
4. The oil well downhole gas distribution wellhead measuring device of claim 2, wherein a helical fin is arranged in the primary oil inlet thin pipe.
5. The oil well downhole gas distribution wellhead measuring device according to claim 1 or 2, characterized in that the downhole secondary acoustic cutting, diffusion, dispersion and separation device comprises a fixing rib, a fixing rod, a connecting pipe, a longitudinal cutting plate, a transverse baffle plate, a primary throat pipe, a secondary throat pipe and a sieve plate; the fixed rod, the connecting pipe, the longitudinal cutting plate, the transverse baffle, the primary throat pipe, the secondary throat pipe and the sieve plate are sequentially connected; the fixed rod is connected to the tail pipe through a fixed rib.
6. The downhole gas-distributing wellhead measuring device according to claim 5, wherein the fixing rod is provided with a plurality of vibrating steel sheets; the vibrating steel sheet and the fixed rod are at an angle of 45 degrees in the vertical direction and are distributed on two sides of the fixed rod.
7. The oil well downhole gas distribution wellhead measuring device according to claim 1, wherein the downhole tertiary gravity separation pumping gas distribution device comprises a fixing plate, a conversion coupling, a secondary oil outlet pipe and a pump pipe lower joint; the fixed plate is connected with the sieve plate through a conversion coupling, the fixed plate is connected with the secondary oil outlet pipe, and the secondary oil outlet pipe is connected with the lower joint of the pump pipe.
8. The oil well downhole gas distribution wellhead measuring device according to claim 1 or 2, wherein a plurality of plate holes are formed in the fixing plate, the gas outlet pipe is connected with the fixing plate, and a secondary oil inlet hole and a secondary gas outlet hole are formed in the vicinity of the connecting port; and a secondary oil outlet hole is formed in the secondary oil outlet pipe.
9. The downhole gas distribution wellhead measuring device for the oil well according to claim 1, wherein the ground gas measurement gas collection and dry mixing and conveying device comprises a precession vortex flowmeter, a bypass valve, a check valve, a wellhead pipeline, a back pressure valve, a choke sleeve, a production valve and a small tee; the precession vortex flowmeter is respectively connected with the constant-pressure check valve, the air suction pump, the bypass valve and the check valve through pipelines; the bypass valve is also respectively connected with a constant-pressure check valve, an air extraction pump and a check valve through pipelines, and the check valve is connected with a wellhead pipeline; the small tee joint is connected with the wellhead four-way joint, the small tee joint, the production valve, the choke sleeve and the wellhead pipeline are sequentially connected, and the wellhead pipeline is also connected with the back pressure valve.
10. The downhole gas separation wellhead measuring device according to any one of claims 1 to 9, wherein the tail pipe is threadedly connected to the connecting pipe through a fixed rod pipe body, the connecting pipe is threadedly connected to the primary and secondary throat pipe bodies through a transverse baffle pipe body, the primary and secondary throat pipe bodies are threadedly connected to the transition coupling pipe body through a sieve plate pipe body, and the transition coupling 18 pipe body is threadedly connected to the secondary oil outlet pipe.
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5482117A (en) * | 1994-12-13 | 1996-01-09 | Atlantic Richfield Company | Gas-liquid separator for well pumps |
| CN2545368Y (en) * | 2002-05-14 | 2003-04-16 | 沈阳永业实业有限公司 | Oil well pump borehole oil-gas separating device |
| CN201433747Y (en) * | 2009-05-26 | 2010-03-31 | 张学海 | Vine pipe device for oil and gas wells |
| US20100218944A1 (en) * | 2009-01-23 | 2010-09-02 | Quigley Peter A | Downhole fluid separation |
| CN203214039U (en) * | 2013-05-13 | 2013-09-25 | 任晓东 | Multifunctional oil well treatment device for oil fields |
| CN103527165A (en) * | 2013-10-30 | 2014-01-22 | 张兵 | Downhole three-phase separating device |
| CN204709960U (en) * | 2015-06-16 | 2015-10-21 | 任志海 | Based on oscillating mode gas-liquid separation device |
| CN105089995A (en) * | 2014-05-08 | 2015-11-25 | 王颖 | Organic six-prevention-effect rodless hydraulic driving double-action reciprocating pump |
| CN205055736U (en) * | 2015-10-20 | 2016-03-02 | 秦皇岛首创思泰意达环保科技有限公司 | Device of pollutant washing and heat dissipation matter in gas |
| RU2604463C1 (en) * | 2015-11-17 | 2016-12-10 | Закрытое акционерное общество "РИМЕРА" | Method of submersible oil pumps gas separators testing and test bench to implement this method |
| CN206205873U (en) * | 2016-12-03 | 2017-05-31 | 吕德林 | A kind of oil well gas efficient cyclone |
| CN207017952U (en) * | 2017-07-18 | 2018-02-16 | 中国海洋石油总公司 | A kind of new regulatable underground gas-liquid separation lifting technology tubing string in sea |
| US20190249537A1 (en) * | 2017-08-30 | 2019-08-15 | Halliburton Energy Services, Inc. | Crossover system and apparatus for an electric submersible gas separator |
| CN110173254A (en) * | 2019-05-14 | 2019-08-27 | 中国海洋石油集团有限公司 | A kind of underground bitubular single-stage adjustable type gas-liquid separator |
| CN110748322A (en) * | 2019-12-06 | 2020-02-04 | 李茂华 | Underground ground multifunctional integrated paraffin removal device |
-
2020
- 2020-10-21 CN CN202011135507.XA patent/CN114458282B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5482117A (en) * | 1994-12-13 | 1996-01-09 | Atlantic Richfield Company | Gas-liquid separator for well pumps |
| CN2545368Y (en) * | 2002-05-14 | 2003-04-16 | 沈阳永业实业有限公司 | Oil well pump borehole oil-gas separating device |
| US20100218944A1 (en) * | 2009-01-23 | 2010-09-02 | Quigley Peter A | Downhole fluid separation |
| CN201433747Y (en) * | 2009-05-26 | 2010-03-31 | 张学海 | Vine pipe device for oil and gas wells |
| CN203214039U (en) * | 2013-05-13 | 2013-09-25 | 任晓东 | Multifunctional oil well treatment device for oil fields |
| CN103527165A (en) * | 2013-10-30 | 2014-01-22 | 张兵 | Downhole three-phase separating device |
| CN105089995A (en) * | 2014-05-08 | 2015-11-25 | 王颖 | Organic six-prevention-effect rodless hydraulic driving double-action reciprocating pump |
| CN204709960U (en) * | 2015-06-16 | 2015-10-21 | 任志海 | Based on oscillating mode gas-liquid separation device |
| CN205055736U (en) * | 2015-10-20 | 2016-03-02 | 秦皇岛首创思泰意达环保科技有限公司 | Device of pollutant washing and heat dissipation matter in gas |
| RU2604463C1 (en) * | 2015-11-17 | 2016-12-10 | Закрытое акционерное общество "РИМЕРА" | Method of submersible oil pumps gas separators testing and test bench to implement this method |
| CN206205873U (en) * | 2016-12-03 | 2017-05-31 | 吕德林 | A kind of oil well gas efficient cyclone |
| CN207017952U (en) * | 2017-07-18 | 2018-02-16 | 中国海洋石油总公司 | A kind of new regulatable underground gas-liquid separation lifting technology tubing string in sea |
| US20190249537A1 (en) * | 2017-08-30 | 2019-08-15 | Halliburton Energy Services, Inc. | Crossover system and apparatus for an electric submersible gas separator |
| CN110173254A (en) * | 2019-05-14 | 2019-08-27 | 中国海洋石油集团有限公司 | A kind of underground bitubular single-stage adjustable type gas-liquid separator |
| CN110748322A (en) * | 2019-12-06 | 2020-02-04 | 李茂华 | Underground ground multifunctional integrated paraffin removal device |
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