Shale oil valve group metering device

Abstract

The utility model relates to the field of oil field metering equipment, and discloses a shale oil valve group metering device which comprises an oil collecting valve group process device and a separation metering process device. The oil collecting valve group flow device comprises an oil collecting pipeline, a metering manifold, an external conveying manifold and an electric three-way switching valve; the separation metering process device mainly comprises a primary filter separator, a cyclone separator, a secondary filter separator, a liquid storage header pipe, a gas flowmeter, a liquid flowmeter, a pressure transmitter, a water content analyzer, a gas-liquid separation control valve, a gas control valve, a liquid control valve and a liquid return control valve. According to the utility model, timely, accurate, comprehensive and automatic production data acquisition is realized, and the automation degree of data acquisition is obviously improved; time and labor are saved, and metering efficiency is high; hidden dangers and risks of manual field operation are reduced, and the safety is high; the structure is simple, cost is low, and performance is reliable; the device is especially suitable for multi-parameter on-line metering in an oil field shale oil development valve group.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield metering equipment technical field, concretely relates to a shale oil valve group metering device in shale oil development process. BACKGROUND

[0002] In the shale oil production and gathering process, oil and gas metering is an extremely important work. In order to improve the development benefit and reduce the exploitation cost, the current oilfield shale development mainly adopts cluster well group development, and the shale oil metering part mostly adopts the traditional vertical or horizontal two-phase separator to operate, cooperates the volume method or flowmeter to carry out yield metering, and the implementation process needs to manually calibrate the yield in the reverse flow process, and there are problems of long yield calibration time, large amount of manpower consumption, and certain operation safety hidden danger. In addition, the valve group "eight-claw fish" process automatic metering is adopted, but due to the high emulsification degree and high gas content of shale oil, the gas-liquid separation of this process is insufficient, is greatly affected by gas, and is limited by the principle of metering instrument, so the metering precision of this metering mode is insufficient. Moreover, the valve group process is greatly changed during installation, and the cost is high.

[0003] Due to the characteristics of high initial production, fast decline, high gas production and high emulsification degree in the early stage of shale oil development, it is difficult to separate gas and liquid in shale oil wells, and the monitoring and analysis of produced media rely on artificial sampling and testing, which cannot realize online real-time monitoring. For example, the utility model patent specification with publication number CN215952701U is recorded: the oil and gas gathering and transportation metering device comprises a storage tank, a left side top of the storage tank is fixedly connected with an oil inlet pipe, a right side bottom of the storage tank is fixedly connected with an oil outlet pipe, a right end of the oil outlet pipe is fixedly installed with a control valve, a right side top of the storage tank is fixedly installed with an L-shaped mounting bracket, a left side top of the L-shaped mounting bracket is fixedly installed with an alarm lamp, an inner wall of a right side of the L-shaped mounting bracket is embedded with a storage battery, a positive electrode of the storage battery is electrically connected with the alarm lamp, a top inner wall of the L-shaped mounting bracket is rotatably installed with a threaded drive mechanism, a left side of the threaded drive mechanism is fixedly connected with a rectangular pipe with a blocked bottom, the rectangular pipe penetrates and extends into the inside of the storage tank, an inner wall of a left side of the rectangular pipe is fixedly connected with a guide mechanism, a top of the guide mechanism extends above the rectangular pipe and is fixedly connected with the top inner wall of the L-shaped mounting bracket, a bottom end inner wall of the rectangular pipe is provided with a first through hole, the first through hole is slidably connected with a T-shaped insulating rod, an inner wall of a right side of the rectangular pipe is fixedly connected with a first insulating rod, a bottom of the first insulating rod and a top of the T-shaped insulating rod are both fixedly installed with a copper sheet, the alarm lamp is electrically connected with the copper sheet at the top of the T-shaped insulating rod, a negative electrode of the storage battery is electrically connected with the copper sheet at the bottom of the first insulating rod, a bottom end of the T-shaped insulating rod extends below the rectangular pipe and is fixedly connected with a pressing block, a top inner wall of the storage tank is provided with a mounting through hole, a sealing sleeve is fixedly sleeved in the mounting through hole, a T-shaped scale rod is slidably sleeved in the sealing sleeve, a front side of the T-shaped scale rod is provided with a scale line, a left side of the rectangular pipe is fixedly installed with a limiting block matched with the T-shaped scale rod, a bottom end of the T-shaped scale rod extends into the inside of the storage tank and is fixedly connected with a floating plate. The threaded drive mechanism comprises a screw rod rotatably installed on the top inner wall of the L-shaped mounting bracket, a bottom end of the screw rod is rotatably installed on the top of the storage tank, a rectangular moving block is threadedly sleeved on the screw rod, a top end of the screw rod extends above the L-shaped mounting bracket and is fixedly connected with a circular turntable, a left side of the rectangular moving block is fixedly connected with a right side top of the rectangular pipe. The guide mechanism comprises a rectangular guide block fixedly connected with the left side inner wall of the rectangular pipe, a top of the rectangular guide block is provided with a sliding through hole, the sliding through hole is slidably sleeved with an L-shaped guide rod, a left end of the L-shaped guide rod is in sliding contact with the left side inner wall of the rectangular pipe, a top end of the L-shaped guide rod extends above the rectangular pipe and is fixedly connected with the top inner wall of the L-shaped mounting bracket. An oil inlet through hole is formed in the left side inner wall of the storage tank, an inner wall of the oil inlet through hole is fixedly connected with an outer side of the oil inlet pipe, an oil outlet through hole is formed in the right side inner wall of the storage tank, an inner wall of the oil outlet through hole is fixedly connected with an outer side of the oil outlet pipe, rectangular support legs are fixedly installed on the bottom of the storage tank.The top inner wall of the oil storage tank is provided with a rectangular sliding through hole, and the four side inner walls of the rectangular sliding through hole are in sliding contact with the left side, the right side, the front side and the back side of the rectangular tube respectively. The top inner wall of the L-shaped mounting frame is provided with a circular through hole, and the two side inner walls of the circular through hole are fixedly provided with a first bearing, and the inner ring of the first bearing is fixedly sleeved with the outer side of the screw rod. The top of the oil storage tank is fixedly connected with a second bearing, and the inner side of the inner ring of the second bearing is fixedly connected with the outer side of the screw rod. The top of the rectangular moving block is provided with a threaded hole which is threadedly connected with the outer side of the screw rod. The right side inner wall of the L-shaped mounting frame is provided with an embedded groove, and the inner wall of the embedded groove is fixedly connected with the outer side of the battery. The alarm lamp, the battery, the copper sheet at the top of the T-shaped insulating rod and the copper sheet at the bottom of the first insulating rod form a loop in sequence. From the above description, the problems solved by the utility model are early warning and treatment of oil level height, but the technical problems of low shale oil metering efficiency, poor safety, insufficient precision, high cost and low automation degree cannot be solved. Therefore, it is necessary to research a multi-stage separation-multi-parameter online monitoring technology suitable for the produced medium of shale oil wells in Shengli Oilfield to realize efficient separation of the produced medium, online metering of multiple parameters and automatic well selection. Utility model content

[0004] To solve the above technical problems, the utility model discloses a shale oil valve group metering device, and the technical scheme is as follows:

[0005] A shale oil valve group metering device, comprising an oil collection valve group flow device and a separation metering flow device; the oil collection valve group flow device comprises an oil collection pipeline, a metering manifold, an external transport manifold and an electric three-way switch valve, the inlet of the electric three-way switch valve is connected with the oil collection pipeline, the outlet is connected with the metering manifold and the external transport manifold respectively, and the external transport manifold is connected with an external transport pipeline; the separation metering flow device comprises a first-stage filter separator, a cyclone separator, a second-stage filter separator, a liquid storage main pipe, a gas flow meter, a liquid flow meter, a gas-liquid separation control valve, a gas control valve, a liquid control valve, a liquid return control valve, a backflow gas valve, a gas-liquid pipeline, a gas pipeline and a liquid pipeline, a gas-liquid inlet and a gas-liquid outlet, the gas-liquid inlet is connected with the metering manifold and the gas-liquid pipeline, the gas-liquid pipeline is provided with the liquid pipeline and the gas pipeline in sequence after the first-stage filter separator and the cyclone separator are installed in sequence, the liquid pipeline is provided with the second-stage filter separator, the liquid storage main pipe, the liquid control valve, the liquid flow meter and the liquid return control valve in sequence, the liquid return control valve is connected with the gas-liquid outlet, the gas pipeline is provided with the gas control valve and the gas flow meter in sequence and is connected with the liquid return control valve through the backflow gas valve, the gas outlet of the second-stage filter separator is connected with the gas pipeline, and the gas outlet of the liquid storage main pipe is connected with the gas pipeline through the gas-liquid separation control valve.

[0006] Further, the electrically-operated three-way switching valve is connected with the oil collecting pipeline through a flange at the inlet, and is connected with the metering manifold and the external delivery manifold through flanges at the outlet respectively.

[0007] Further, the gas pipeline is provided with a branch after the gas flow meter and is connected with the gas outlet through an outlet gas valve.

[0008] Further, the bottom of the liquid storage main pipe is provided with an automatic heater and a blowdown.

[0009] Further, the liquid control valve is connected with a gas-liquid balance controller at the upper portion, and the gas-liquid balance controller is connected with a gas control valve at the upper portion.

[0010] Further, the liquid pipeline is provided with a pressure transmitter after the liquid control valve.

[0011] Further, the liquid pipeline is provided with a water content analyzer after the liquid flow meter.

[0012] Further, the liquid return control valve is connected with a liquid return controller at the upper portion.

[0013] Further, the liquid flow meter is a Coriolis flow meter.

[0014] Further, the gas flow meter is an intelligent integrated orifice flow meter.

[0015] Compared with the prior art, the utility model mainly has the following beneficial technical effects:

[0016] 1. The utility model realizes timely, accurate and comprehensive automatic production data acquisition through automatic metering and external delivery, and significantly improves the automation degree of data acquisition.

[0017] 2. Time and labor are saved, and the metering efficiency is high.

[0018] 3. The hidden risk of manual field operation is reduced, and the safety is high.

[0019] 4. The structure is simple, the cost is low, and the performance is reliable.

[0020] 5. The utility model has great popularization value and is especially suitable for multi-parameter online metering in the valve group for oilfield shale oil development. DRAWINGS

[0021] Figure 1 It is a top view of the valve group process of the utility model;

[0022] Figure 2 It is a schematic view of the metering process of the utility model;

[0023] Figure 3 It is Figure 1A-A sectional view in the direction of the arrow in Fig. 1;

[0024] Figure 4 is Figure 1 B-B sectional view in the direction of the arrow in Fig. 1;

[0025] Figure 5 is a schematic view of the switching of the passages of the three-way switching valve;

[0026] In the figure: 1 - metering manifold, 2 - flange, 3 - valve core, 4 - electrically driven three-way switching valve, 5 - delivery manifold, 6 - electric drive head, 7 - gas-liquid inlet, 8 - primary filter separator, 9 - cyclone separator, 10 - gas line, 11 - secondary filter separator, 12 - liquid line, 13 - liquid storage main, 14 - gas-liquid separation control valve, 15 - gas control valve, 16 - gas flow meter, 17 - outgoing gas valve, 18 - gas outlet, 19 - liquid return controller, 20 - gas-liquid outlet, 21 - liquid return control valve, 22 - return gas valve, 23 - gas-liquid balance controller, 24 - pressure transmitter, 25 - liquid flow meter, 26 - water content analyzer, 27 - liquid control valve, 28 - blowdown, 29 - automatic heater, 30 - gas-liquid line. DETAILED DESCRIPTION

[0027] The present application will be described in detail below with reference to the embodiments and the accompanying drawings. Example 1

[0028] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The shale oil valve group metering device comprises a collecting valve group flow device and a separation metering flow device; the collecting valve group flow device comprises a collecting pipeline, a metering manifold 1, an external delivery manifold 5 and an electric three-way switch valve 4, the inlet of the electric three-way switch valve 4 is connected with the collecting pipeline, the outlet is connected with the metering manifold 1 and the external delivery manifold 5 respectively, and the external delivery manifold 5 is connected with an external delivery pipeline; the separation metering flow device comprises a primary filter separator 8, a cyclone separator 9, a secondary filter separator 11, a liquid storage main pipe 13, a gas flow meter 16, a liquid flow meter 25, a gas-liquid separation control valve 14, a gas control valve 15, a liquid control valve 27, a liquid return control valve 21, a backflow gas valve 22, a gas-liquid pipeline 30, a gas pipeline 10, a liquid pipeline 12, a gas-liquid inlet 7 and a gas-liquid outlet 20, the gas-liquid inlet 7 is connected with the metering manifold 1 and the gas-liquid pipeline 30 respectively, the gas-liquid pipeline 30 is sequentially provided with the primary filter separator 8 and the cyclone separator 9, and then branched into the liquid pipeline 12 and the gas pipeline 10, the liquid pipeline 12 is sequentially provided with the secondary filter separator 11, the liquid storage main pipe 13, the liquid control valve 27, the liquid flow meter 25 and the liquid return control valve 21, the liquid return control valve 21 is connected with the gas-liquid outlet 20, the gas pipeline 10 is sequentially provided with the gas control valve 15 and the gas flow meter 16 and connected with the liquid return control valve 21 through the backflow gas valve 22, the gas outlet of the secondary filter separator 11 is connected with the gas pipeline 10, and the gas outlet of the liquid storage main pipe 13 is connected with the gas pipeline 10 through the gas-liquid separation control valve 14. Example 2

[0029] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The shale oil valve group metering device comprises a collecting valve group flow device and a separation metering flow device; the collecting valve group flow device comprises a collecting pipeline, a metering manifold 1, an external delivery manifold 5 and an electric three-way switch valve 4, the inlet of the electric three-way switch valve 4 is connected with the collecting pipeline, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5, and the external delivery manifold 5 is connected with an external delivery pipeline; the separation metering flow device comprises a primary filter separator 8, a cyclone separator 9, a secondary filter separator 11, a liquid storage main pipe 13, a gas flow meter 16, a liquid flow meter 25, a gas-liquid separation control valve 14, a gas control valve 15, a liquid control valve 27, a liquid return control valve 21, a backflow gas valve 22, a gas-liquid pipeline 30, a gas pipeline 10, a liquid pipeline 12, a gas-liquid inlet 7 and a gas-liquid outlet 20, the gas-liquid inlet 7 is connected with the metering manifold 1 and the gas-liquid pipeline 30, the gas-liquid pipeline 30 is sequentially provided with the primary filter separator 8 and the cyclone separator 9, and then branched into the liquid pipeline 12 and the gas pipeline 10, the liquid pipeline 12 is sequentially provided with the secondary filter separator 11, the liquid storage main pipe 13, the liquid control valve 27, the liquid flow meter 25 and the liquid return control valve 21, the liquid return control valve 21 is connected with the gas-liquid outlet 20, the gas pipeline 10 is sequentially provided with the gas control valve 15 and the gas flow meter 16 and connected with the liquid return control valve 21 through the backflow gas valve 22, the gas outlet of the secondary filter separator 11 is connected with the gas pipeline 10, and the gas outlet of the liquid storage main pipe 13 is connected with the gas pipeline 10 through the gas-liquid separation control valve 14.

[0030] The inlet of the electric three-way switch valve 4 is connected with the collecting pipeline through a flange 2, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5 through the flange 2, and the external delivery manifold 5 is connected with the external delivery pipeline through the flange 2. Example 3

[0031] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A shale oil valve group metering device, comprising a collecting valve group flow device and a separation metering flow device; the collecting valve group flow device comprises a collecting pipeline, a metering manifold 1, an external delivery manifold 5 and an electric three-way switch valve 4, the inlet of the electric three-way switch valve 4 is connected with the collecting pipeline, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5, and the external delivery manifold 5 is connected with an external delivery pipeline; the separation metering flow device comprises a primary filter separator 8, a cyclone separator 9, a secondary filter separator 11, a liquid storage main pipe 13, a gas flow meter 16, a liquid flow meter 25, a gas-liquid separation control valve 14, a gas control valve 15, a liquid control valve 27, a liquid return control valve 21, a backflow gas valve 22, a gas-liquid pipeline 30, a gas pipeline 10, a liquid pipeline 12, a gas-liquid inlet 7 and a gas-liquid outlet 20, the gas-liquid inlet 7 is connected with the metering manifold 1 and the gas-liquid pipeline 30, the gas-liquid pipeline 30 is sequentially provided with the primary filter separator 8 and the cyclone separator 9, and then branched into the liquid pipeline 12 and the gas pipeline 10, the liquid pipeline 12 is sequentially provided with the secondary filter separator 11, the liquid storage main pipe 13, the liquid control valve 27, the liquid flow meter 25 and the liquid return control valve 21, the liquid return control valve 21 is connected with the gas-liquid outlet 20, the gas pipeline 10 is sequentially provided with the gas control valve 15 and the gas flow meter 16 and connected with the liquid return control valve 21 through the backflow gas valve 22, the gas outlet of the secondary filter separator 11 is connected with the gas pipeline 10, and the gas outlet of the liquid storage main pipe 13 is connected with the gas pipeline 10 through the gas-liquid separation control valve 14.

[0032] The inlet of the electric three-way switch valve 4 is connected with the collecting pipeline through a flange 2, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5 through flanges 2, and the external delivery manifold 5 is connected with the external delivery pipeline through a flange 2.

[0033] The gas pipeline 10 is provided with a branch after the gas flow meter 16 and connected with a gas outlet 18 through an outlet gas valve 17. Example 4

[0034] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The shale oil valve group metering device comprises a collecting valve group flow device and a separation metering flow device; the collecting valve group flow device comprises a collecting pipeline, a metering manifold 1, an external delivery manifold 5 and an electric three-way switch valve 4, the inlet of the electric three-way switch valve 4 is connected with the collecting pipeline, the outlet is connected with the metering manifold 1 and the external delivery manifold 5 respectively, and the external delivery manifold 5 is connected with an external delivery pipeline; the separation metering flow device comprises a primary filter separator 8, a cyclone separator 9, a secondary filter separator 11, a liquid storage main pipe 13, a gas flow meter 16, a liquid flow meter 25, a gas-liquid separation control valve 14, a gas control valve 15, a liquid control valve 27, a liquid return control valve 21, a backflow gas valve 22, a gas-liquid pipeline 30, a gas pipeline 10, a liquid pipeline 12, a gas-liquid inlet 7 and a gas-liquid outlet 20; the gas-liquid inlet 7 is connected with the metering manifold 1 and the gas-liquid pipeline 30 respectively, the gas-liquid pipeline 30 is provided with the primary filter separator 8 and the cyclone separator 9 in sequence, and then the liquid pipeline 12 and the gas pipeline 10 are branched out, the liquid pipeline 12 is provided with the secondary filter separator 11, the liquid storage main pipe 13, the liquid control valve 27, the liquid flow meter 25 and the liquid return control valve 21 in sequence, the liquid return control valve 21 is connected with the gas-liquid outlet 20, the gas pipeline 10 is provided with the gas control valve 15 and the gas flow meter 16 in sequence and is connected with the liquid return control valve 21 through the backflow gas valve 22, the gas outlet of the secondary filter separator 11 is connected with the gas pipeline 10, and the gas outlet of the liquid storage main pipe 13 is connected with the gas pipeline 10 through the gas-liquid separation control valve 14.

[0035] The inlet of the electric three-way switch valve 4 is connected with the collecting pipeline through a flange 2, the outlet is connected with the metering manifold 1 and the external delivery manifold 5 through flanges 2 respectively, and the external delivery manifold 5 is connected with the external delivery pipeline through a flange 2.

[0036] The gas pipeline 10 is provided with a branch after the gas flow meter 16 and is connected with a gas outlet 18 through an outlet gas valve 17.

[0037] The bottom of the liquid storage main pipe 13 is provided with an automatic heater 29 and a blowdown port 28; the automatic heater 29 guarantees normal operation of the crude oil, and the blowdown port 28 is subjected to blowdown treatment every six months to guarantee normal operation of the instrument. Example 5

[0038] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A shale oil valve group metering device, comprising a gathering valve group flow device and a separation metering flow device; the gathering valve group flow device comprises a gathering pipeline, a metering manifold 1, an external delivery manifold 5 and an electric three-way switch valve 4, the inlet of the electric three-way switch valve 4 is connected with the gathering pipeline, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5, and the external delivery manifold 5 is connected with an external delivery pipeline; the separation metering flow device comprises a primary filter separator 8, a cyclone separator 9, a secondary filter separator 11, a liquid storage main pipe 13, a gas flow meter 16, a liquid flow meter 25, a gas-liquid separation control valve 14, a gas control valve 15, a liquid control valve 27, a liquid return control valve 21, a backflow gas valve 22, a gas-liquid pipeline 30, a gas pipeline 10, a liquid pipeline 12, a gas-liquid inlet 7 and a gas-liquid outlet 20, the gas-liquid inlet 7 is connected with the metering manifold 1 and the gas-liquid pipeline 30, the gas-liquid pipeline 30 is sequentially provided with the primary filter separator 8 and the cyclone separator 9, and then branched into the liquid pipeline 12 and the gas pipeline 10, the liquid pipeline 12 is sequentially provided with the secondary filter separator 11, the liquid storage main pipe 13, the liquid control valve 27, the liquid flow meter 25 and the liquid return control valve 21, the liquid return control valve 21 is connected with the gas-liquid outlet 20, the gas pipeline 10 is sequentially provided with the gas control valve 15 and the gas flow meter 16 and connected with the liquid return control valve 21 through the backflow gas valve 22, the gas outlet of the secondary filter separator 11 is connected with the gas pipeline 10, and the gas outlet of the liquid storage main pipe 13 is connected with the gas pipeline 10 through the gas-liquid separation control valve 14.

[0039] The inlet of the electric three-way switch valve 4 is connected with the gathering pipeline through a flange 2, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5 through flanges 2, and the external delivery manifold 5 is connected with the external delivery pipeline through a flange 2.

[0040] The gas pipeline 10 is provided with a branch after the gas flow meter 16 and connected with a gas outlet 18 through an outlet gas valve 17.

[0041] The bottom of the liquid storage main pipe 13 is provided with an automatic heater 29 and a blowdown port 28, the automatic heater 29 ensures normal operation of the crude oil, and the blowdown port 28 is subjected to blowdown treatment every six months to ensure normal operation of the instrument.

[0042] The upper portion of the liquid control valve 27 is connected with a gas-liquid balance controller 23, the upper portion of the gas-liquid balance controller 23 is connected with the gas control valve 15, so as to facilitate maintaining the gas-liquid balance. Example 6

[0043] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A shale oil valve group metering device, comprising a collecting valve group flow device and a separation metering flow device; the collecting valve group flow device comprises a collecting pipeline, a metering manifold 1, an external delivery manifold 5 and an electric three-way switch valve 4, the inlet of the electric three-way switch valve 4 is connected with the collecting pipeline, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5, and the external delivery manifold 5 is connected with an external delivery pipeline; the separation metering flow device comprises a primary filter separator 8, a cyclone separator 9, a secondary filter separator 11, a liquid storage main pipe 13, a gas flow meter 16, a liquid flow meter 25, a gas-liquid separation control valve 14, a gas control valve 15, a liquid control valve 27, a liquid return control valve 21, a backflow gas valve 22, a gas-liquid pipeline 30, a gas pipeline 10, a liquid pipeline 12, a gas-liquid inlet 7 and a gas-liquid outlet 20, the gas-liquid inlet 7 is connected with the metering manifold 1 and the gas-liquid pipeline 30, the gas-liquid pipeline 30 is sequentially provided with the primary filter separator 8 and the cyclone separator 9, and then branched into the liquid pipeline 12 and the gas pipeline 10, the liquid pipeline 12 is sequentially provided with the secondary filter separator 11, the liquid storage main pipe 13, the liquid control valve 27, the liquid flow meter 25 and the liquid return control valve 21, the liquid return control valve 21 is connected with the gas-liquid outlet 20, the gas pipeline 10 is sequentially provided with the gas control valve 15 and the gas flow meter 16 and connected with the liquid return control valve 21 through the backflow gas valve 22, the gas outlet of the secondary filter separator 11 is connected with the gas pipeline 10, and the gas outlet of the liquid storage main pipe 13 is connected with the gas pipeline 10 through the gas-liquid separation control valve 14.

[0044] The inlet of the electric three-way switch valve 4 is connected with the collecting pipeline through a flange 2, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5 through flanges 2, and the external delivery manifold 5 is connected with the external delivery pipeline through a flange 2.

[0045] The gas pipeline 10 is provided with a branch after the gas flow meter 16 and connected with a gas outlet 18 through an outlet gas valve 17.

[0046] The bottom of the liquid storage main pipe 13 is provided with an automatic heater 29 and a blowdown port 28, the automatic heater 29 ensures normal operation of the crude oil, and the blowdown port 28 is subjected to blowdown treatment every six months to ensure normal operation of the instrument.

[0047] The upper portion of the liquid control valve 27 is connected with a gas-liquid balance controller 23, and the upper portion of the gas-liquid balance controller 23 is connected with the gas control valve 15, so as to facilitate maintaining the gas-liquid balance.

[0048] The liquid pipeline 12 is provided with a pressure transmitter 24 after the liquid control valve 27, so as to grasp the pipeline pressure condition at any time. Example 7

[0049] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A shale oil valve group metering device, comprising a collecting valve group flow device and a separation metering flow device; the collecting valve group flow device comprises a collecting pipeline, a metering manifold 1, an external delivery manifold 5 and an electric three-way switch valve 4, the inlet of the electric three-way switch valve 4 is connected with the collecting pipeline, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5, and the external delivery manifold 5 is connected with an external delivery pipeline; the separation metering flow device comprises a primary filter separator 8, a cyclone separator 9, a secondary filter separator 11, a liquid storage main pipe 13, a gas flow meter 16, a liquid flow meter 25, a gas-liquid separation control valve 14, a gas control valve 15, a liquid control valve 27, a liquid return control valve 21, a backflow gas valve 22, a gas-liquid pipeline 30, a gas pipeline 10, a liquid pipeline 12, a gas-liquid inlet 7 and a gas-liquid outlet 20, the gas-liquid inlet 7 is connected with the metering manifold 1 and the gas-liquid pipeline 30, the gas-liquid pipeline 30 is sequentially provided with the primary filter separator 8 and the cyclone separator 9, and then branched into the liquid pipeline 12 and the gas pipeline 10, the liquid pipeline 12 is sequentially provided with the secondary filter separator 11, the liquid storage main pipe 13, the liquid control valve 27, the liquid flow meter 25 and the liquid return control valve 21, the liquid return control valve 21 is connected with the gas-liquid outlet 20, the gas pipeline 10 is sequentially provided with the gas control valve 15 and the gas flow meter 16 and connected with the liquid return control valve 21 through the backflow gas valve 22, the gas outlet of the secondary filter separator 11 is connected with the gas pipeline 10, and the gas outlet of the liquid storage main pipe 13 is connected with the gas pipeline 10 through the gas-liquid separation control valve 14.

[0050] The inlet of the electric three-way switch valve 4 is connected with the collecting pipeline through a flange 2, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5 through flanges 2, and the external delivery manifold 5 is connected with the external delivery pipeline through a flange 2.

[0051] The gas pipeline 10 is provided with a branch after the gas flow meter 16 and connected with a gas outlet 18 through an outlet gas valve 17.

[0052] The bottom of the liquid storage main pipe 13 is provided with an automatic heater 29 and a blowdown port 28. The automatic heater 29 ensures normal operation of the crude oil. The blowdown port 28 is treated every six months to ensure normal operation of the instrument.

[0053] The liquid control valve 27 is connected with a gas-liquid balance controller 23 at the upper portion, and the upper portion of the gas-liquid balance controller 23 is connected with the gas control valve 15, so as to facilitate maintaining the gas-liquid balance.

[0054] The liquid pipeline 12 is provided with a pressure transmitter 24 after the liquid control valve 27, so as to grasp the pipeline pressure condition at any time.

[0055] The liquid pipeline 12 is provided with a water content analyzer 26 after the liquid flow meter 25, so as to grasp the water content condition of the crude oil at any time. Example 8

[0056] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 . A shale oil valve group metering device, comprising a gathering valve group flow device and a separation metering flow device; the gathering valve group flow device comprises a gathering pipeline, a metering manifold 1, an external delivery manifold 5 and an electric three-way switch valve 4, the inlet of the electric three-way switch valve 4 is connected with the gathering pipeline, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5, and the external delivery manifold 5 is connected with an external delivery pipeline; the separation metering flow device comprises a primary filter separator 8, a cyclone separator 9, a secondary filter separator 11, a liquid storage main pipe 13, a gas flow meter 16, a liquid flow meter 25, a gas-liquid separation control valve 14, a gas control valve 15, a liquid control valve 27, a liquid return control valve 21, a backflow gas valve 22, a gas-liquid pipeline 30, a gas pipeline 10, a liquid pipeline 12, a gas-liquid inlet 7 and a gas-liquid outlet 20, the gas-liquid inlet 7 is respectively connected with the metering manifold 1 and the gas-liquid pipeline 30, the gas-liquid pipeline 30 is sequentially provided with the primary filter separator 8 and the cyclone separator 9, and then branched into the liquid pipeline 12 and the gas pipeline 10, the liquid pipeline 12 is sequentially provided with the secondary filter separator 11, the liquid storage main pipe 13, the liquid control valve 27, the liquid flow meter 25 and the liquid return control valve 21, the liquid return control valve 21 is connected with the gas-liquid outlet 20, the gas pipeline 10 is sequentially provided with the gas control valve 15 and the gas flow meter 16 and connected with the liquid return control valve 21 through the backflow gas valve 22, the gas outlet of the secondary filter separator 11 is connected with the gas pipeline 10, and the gas outlet of the liquid storage main pipe 13 is connected with the gas pipeline 10 through the gas-liquid separation control valve 14.

[0057] The inlet of the electric three-way switch valve 4 is connected with the gathering pipeline through a flange 2, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5 through flanges 2, and the external delivery manifold 5 is connected with the external delivery pipeline through a flange 2.

[0058] The gas pipeline 10 is provided with a branch after the gas flow meter 16 and connected with a gas outlet 18 through an outlet gas valve 17.

[0059] The bottom of the liquid storage main pipe 13 is provided with an automatic heater 29 and a blowdown port 28. The automatic heater 29 ensures normal operation of the crude oil. The blowdown port 28 is treated every six months to ensure normal operation of the instrument.

[0060] The liquid control valve 27 is connected with a gas-liquid balance controller 23 at the upper portion, and the upper portion of the gas-liquid balance controller 23 is connected with the gas control valve 15, so as to facilitate maintaining the gas-liquid balance.

[0061] The liquid pipeline 12 is provided with a pressure transmitter 24 after the liquid control valve 27, so as to grasp the pipeline pressure condition at any time.

[0062] The liquid pipeline 12 is provided with a water content analyzer 26 after the liquid flow meter 25 to keep track of the water content of the crude oil at any time.

[0063] The liquid return control valve 21 is connected with a liquid return controller 19 at the upper part to better control the liquid return. Example 9

[0064] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 . A shale oil valve group metering device comprises a shale oil valve group flow device and a separation metering flow device; the shale oil valve group flow device comprises a shale oil pipeline, a metering manifold 1, an external delivery manifold 5 and an electric three-way switch valve 4, the inlet of the electric three-way switch valve 4 is connected with the shale oil pipeline, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5, and the external delivery manifold 5 is connected with an external delivery pipeline; the separation metering flow device comprises a primary filter separator 8, a cyclone separator 9, a secondary filter separator 11, a liquid storage main pipe 13, a gas flow meter 16, a liquid flow meter 25, a gas-liquid separation control valve 14, a gas control valve 15, a liquid control valve 27, a liquid return control valve 21, a backflow gas valve 22, a gas-liquid pipeline 30, a gas pipeline 10, a liquid pipeline 12, a gas-liquid inlet 7 and a gas-liquid outlet 20, the gas-liquid inlet 7 is respectively connected with the metering manifold 1 and the gas-liquid pipeline 30, the gas-liquid pipeline 30 is provided with the primary filter separator 8 and the cyclone separator 9 in sequence, and then branched into the liquid pipeline 12 and the gas pipeline 10, the liquid pipeline 12 is provided with the secondary filter separator 11, the liquid storage main pipe 13, the liquid control valve 27, the liquid flow meter 25 and the liquid return control valve 21 in sequence, the liquid return control valve 21 is connected with the gas-liquid outlet 20, the gas pipeline 10 is provided with the gas control valve 15 and the gas flow meter 16 in sequence and connected with the liquid return control valve 21 through the backflow gas valve 22, the gas outlet of the secondary filter separator 11 is connected with the gas pipeline 10, and the gas outlet of the liquid storage main pipe 13 is connected with the gas pipeline 10 through the gas-liquid separation control valve 14.

[0065] The inlet of the electric three-way switch valve 4 is connected with the shale oil pipeline through a flange 2, the outlets are respectively connected with the metering manifold 1 and the external delivery manifold 5 through flanges 2, and the external delivery manifold 5 is connected with the external delivery pipeline through a flange 2.

[0066] The gas pipeline 10 is provided with a branch after the gas flow meter 16 and connected with a gas outlet 18 through an outlet gas valve 17.

[0067] The bottom of the liquid storage main pipe 13 is provided with an automatic heater 29 and a blowdown port 28. The automatic heater 29 ensures the normal operation of the crude oil. The blowdown port 28 is treated every six months to ensure the normal operation of the instrument.

[0068] The upper portion of the liquid control valve 27 is connected to a gas-liquid balance controller 23 , and the upper portion of the gas-liquid balance controller 23 is connected to a gas control valve 15 to facilitate maintaining gas-liquid balance.

[0069] The liquid pipeline 12 is provided with a pressure transmitter 24 after the liquid control valve 27 so as to monitor the pipeline pressure at any time.

[0070] The liquid pipeline 12 is provided with a water content analyzer 26 after the liquid flow meter 25 so as to monitor the water content of the crude oil at any time.

[0071] The upper portion of the liquid return control valve 21 is connected to a liquid return controller 19 to better control the liquid return.

[0072] The liquid flowmeter 25 adopts a Coriolis flowmeter, which has the advantages of high precision and good repeatability; the gas flowmeter 16 adopts an intelligent integrated orifice flowmeter, which has strong adaptability to process control and measurement in the oil field.

[0073] In order to enable those skilled in the art to better understand the present invention, its basic working principle is briefly introduced as follows:

[0074] The right-angle passage within the valve core 3 of the electric three-way switching valve 4 allows the valve 4 to be in three different states depending on the rotation angle. The first state connects the lower inlet to the left outlet, directing gas and liquid from the shale oil well gathering pipeline into the metering manifold 1. The second state closes the lower inlet, left outlet, and right outlet after the valve core 3 is rotated 45 degrees counterclockwise. The third state connects the lower inlet to the right outlet after the valve core 3 is rotated 90 degrees counterclockwise, directing gas and liquid from the gathering pipeline into the external transmission manifold 5. When the electric three-way switching valve 4 is in the third state, gas and liquid from the gathering pipeline directly enter the external transmission manifold 5 for collection and then enter the external transmission pipeline. When the electric three-way switching valve 4 is in the first state, gas and liquid from the gathering pipeline enter the metering manifold 1 and are then directed into the metering process.

[0075] In the metering process, the gas-liquid from the metering manifold 1 enters the gas-liquid inlet 7 and then enters the cyclone separator 9 after passing through the first-stage filter separator 8. After the preliminary separation by the cyclone separator 9, the gas and liquid enter the respective pipelines. The liquid enters the second-stage filter separator 11 to further eliminate the gas bubbles and oil bubbles, and then the gas and liquid enter the respective pipelines. The liquid reaches the liquid storage manifold 13 and is subjected to static treatment, with the gas on top and the liquid on the bottom. The liquid directly enters the next liquid pipeline 12, and when the gas reaches a certain amount, the gas-liquid separation control valve 14 is opened to allow the gas to enter the gas pipeline 10. The bottom of the liquid storage manifold 13 is provided with an automatic heating device to ensure normal operation of the crude oil, and a blowdown port 28 is provided at the bottom to perform blowdown treatment every six months to ensure normal operation of the instrument. After four separations, the gas-liquid enters the gas-liquid balance control system. The gas runs through the gas control valve 15 to achieve gas balance, enters the gas flowmeter 16, and measures the gas volume. After the gas volume measurement is completed, the gas enters the gas storage tank through the gas pipeline 10 or is combined again into the gas-liquid pipeline 10 and enters the gas-liquid outlet 20.

[0076] The liquid runs through the liquid control valve 27 to achieve liquid balance, and then flows through the liquid flowmeter 25 via the pressure transmitter 24 to measure the liquid volume of the crude oil, and then passes through the water content analyzer 26 to measure the water content of the crude oil. The liquid passes through the liquid return control valve 21 and enters the gas-liquid outlet 20.

Claims

1. A shale oil valve group metering device, including an oil gathering valve group process device and a separation metering process device, characterized in that: The oil-gathering valve group process device includes an oil-gathering pipeline, a metering manifold, an external transport manifold and an electric three-way switching valve. The inlet of the electric three-way switching valve is connected to the oil-gathering pipeline, and the outlet is connected to the metering manifold and the external transport manifold respectively. The external transport manifold is connected to the external transport pipeline; the separation and metering process device includes a primary filter separator, a cyclone separator, a secondary filter separator, a liquid storage main pipe, a gas flow meter, a liquid flow meter, a gas-liquid separation control valve, a gas control valve, a liquid control valve, a liquid return control valve, a reflux gas valve, a gas-liquid pipeline, a gas pipeline, a liquid pipeline, a gas-liquid inlet and a gas-liquid outlet The gas and liquid inlets are respectively connected to the metering manifold and the gas-liquid pipeline. The first-level filter separator and cyclone separator are installed on the gas-liquid pipeline in sequence, and then the liquid pipeline and the gas pipeline are separated. The second-level filter separator, liquid storage main pipe, liquid control valve, liquid flow meter and return liquid control valve are installed on the liquid pipeline in sequence. The return liquid control valve is connected to the gas-liquid outlet. The gas control valve and gas flow meter are installed on the gas pipeline in sequence and connected to the return liquid control valve through the reflux gas valve. The air outlet of the second-level filter separator is connected to the gas pipeline, and the air outlet of the liquid storage main pipe is connected to the gas pipeline through the gas-liquid separation control valve.

2. A shale oil valve group metering device according to claim 1, characterized in that: The inlet of the electric three-way switching valve is connected to the oil collection pipeline through a flange, and the outlet is connected to the metering manifold and the external transmission manifold through flanges respectively. The external transmission manifold is connected to the external transmission pipeline through a flange.

3. The shale oil valve group metering device according to claim 1, characterized in that: The gas pipeline is provided with a branch after the gas flow meter and is connected to the gas outlet through an outgoing gas valve.

4. A shale oil valve group metering device according to claim 1, characterized in that: An automatic heater and a sewage outlet are provided at the bottom of the liquid storage main pipe.

5. The shale oil valve group metering device according to claim 1, characterized in that: The upper portion of the liquid control valve is connected to a gas-liquid balance controller, and the upper portion of the gas-liquid balance controller is connected to a gas control valve.

6. The shale oil valve group metering device according to claim 1, characterized in that: The liquid pipeline is equipped with a pressure transmitter after the liquid control valve.

7. The shale oil valve group metering device according to claim 1, characterized in that: The liquid pipeline is equipped with a water content analyzer after the liquid flow meter.

8. The shale oil valve group metering device according to claim 1, characterized in that: The upper portion of the liquid return control valve is connected with a liquid return controller.

9. The shale oil valve group metering device according to claim 1, characterized in that: The liquid flow meter adopts a Coriolis flow meter.

10. The shale oil valve group metering device according to claim 1, characterized in that: The gas flow meter adopts an intelligent integrated orifice flow meter.

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