Oil extraction wellhead device provided with three-phase flow measuring instrument

Abstract

The utility model relates to an oil extraction wellhead device equipped with a three-phase flow measuring instrument, which comprises an oil pipe head, a connecting four-way joint, a blowout prevention box assembly, a maintenance valve component, a metering valve component, an oil-gas-water three-phase flow measuring instrument, a calibration valve component and an oil transportation valve component, and is characterized in that a first port of the connecting four-way joint is connected with the oil pipe head, and a second port of the connecting four-way joint is connected with the blowout prevention box assembly; the third port is connected with a maintenance valve assembly, and the fourth port is connected with a metering valve assembly; the metering valve assembly, the oil-gas-water three-phase flow measuring instrument, the calibration valve assembly and the oil transportation valve assembly are connected in sequence; the maintenance valve assembly is connected with the oil conveying valve assembly through the oil conveying pipeline. According to the utility model, the oil-gas-water three-phase flow measuring instrument is integrated on the wellhead device, so that the three-phase fluid parameters of a single well can be measured in real time during oil extraction, the normal output of oil can be ensured during maintenance, disassembly and calibration, and the oil extraction process is not delayed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oil well head device technical field, concretely relates to a kind of oil well head device equipped with three-phase flow measuring instrument. BACKGROUND

[0002] In oilfield production, the collected oil component is relatively mixed, in addition to crude oil, it also contains natural gas, water and impurities such as sand, and the oil, water and gas in the oil well are the three basic production bases of oil, with the oilfield entering the high water-cut period and high gas-cut period, the single-well crude oil production error is getting bigger and bigger, in order to accurately determine the production of crude oil, and understand the change of formation exploitation degree and oil-water-gas content, the production of oil-water-gas three-phase in produced oil is usually measured, so as to ensure single-well production, optimize production, improve efficiency and manage construction.

[0003] The domestic measurement methods for single-well crude oil are basically weighing method, density method, indicator diagram measurement method and single-well measurement station, and even some remote oil wells do not measure directly. These measurement methods all have the disadvantages of large error, high cost, inconvenient management and lack of real-time, which may cause the oil pumping unit to idle and waste resources. UTILITY MODEL CONTENT

[0004] In order to solve the above problems in the prior art, the utility model provides an oil well head device equipped with three-phase flow measuring instrument. The technical problem to be solved by the utility model is solved by the following technical scheme:

[0005] An oil well head device equipped with three-phase flow measuring instrument, comprising: a tubing head, a connecting cross, a blowout prevention box assembly, a repair valve assembly, a metering valve assembly, an oil-gas-water three-phase flow measuring instrument, a calibration valve assembly and an oil delivery valve assembly, wherein,

[0006] The first port of the connecting cross is connected to the tubing head, the second port is connected to the blowout prevention box assembly, the third port is connected to the repair valve assembly, and the fourth port is connected to the metering valve assembly;

[0007] The metering valve assembly, the oil-gas-water three-phase flow measuring instrument, the calibration valve assembly and the oil delivery valve assembly are connected in sequence;

[0008] The repair valve assembly is connected to the oil delivery valve assembly through an oil delivery pipeline.

[0009] In an implementable manner, the lower end of the tubing head is connected to a double-public short section through a casing flange;

[0010] The upper end of the tubing head is connected to the first port of the connecting cross through a conversion flange.

[0011] In one feasible embodiment, the tubing head includes: a tubing four-way body, a tubing hanger, a first valve, a clamp flange, a right-angle shut-off valve, a pressure gauge, and a second valve, wherein...

[0012] The upper end of the tubing four-way body is connected to the conversion flange, the lower end is connected to the casing flange, the left end is connected to one end of the right-angle stop valve through the second valve, and the right end is connected to the clamp flange through the first valve.

[0013] The tubing hanger is located inside the tubing cross body and is connected to the tubing.

[0014] The pressure gauge is located at the other end of the right-angle shut-off valve.

[0015] In one feasible embodiment, the maintenance valve assembly includes: a maintenance branch gate valve and a first flange for the oil pipeline, wherein,

[0016] One end of the maintenance branch gate valve is connected to the third port of the connecting four-way valve, and the other end of the maintenance branch gate valve is connected to the oil pipeline through the first flange of the oil pipeline.

[0017] In one feasible embodiment, the metering valve assembly includes: a metering branch gate valve, a first tee, and a blind plug, wherein,

[0018] The first port of the first tee is connected to the fourth port of the connecting four-way valve through the metering branch gate valve, the second port of the first tee is connected to the oil-gas-water three-phase flow measuring instrument, and the third port of the first tee is connected to the blind plug.

[0019] In one feasible embodiment, the calibration valve assembly includes: a second three-way valve, a calibration branch gate valve, a first ball valve, a third three-way valve, and a second ball valve, wherein...

[0020] The first port of the second three-way valve is connected to the oil-gas-water three-phase flow measuring instrument, the second port of the second three-way valve is connected to the first port of the third three-way valve through the calibration branch gate valve, and the third port of the second three-way valve is connected to one end of the first ball valve.

[0021] The second port of the third tee is connected to the oil delivery valve assembly, and the third port of the third tee is connected to the second ball valve.

[0022] In one feasible embodiment, the oil delivery valve assembly includes: a check valve, a fourth tee, a threaded flange, a second flange for the oil delivery pipe, and a plug, wherein,

[0023] The first port of the fourth tee is connected to the calibration valve assembly through the check valve, the second port of the fourth tee is connected to the threaded flange, and the third port of the fourth tee is connected to the oil pipeline through the second flange of the oil pipeline.

[0024] The plug is threaded to the center hole of the threaded flange.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] This invention provides an oil wellhead device equipped with a three-phase flow measuring instrument. Through a rational layout of the wellhead device's pipelines, the oil-gas-water three-phase flow measuring instrument is integrated onto the wellhead device, enabling real-time measurement of three-phase fluid parameters in a single well during oil production. It features a simple structure, small size, low cost, and high accuracy. Furthermore, it facilitates maintenance, disassembly, and calibration, ensuring normal oil output even during these processes and not disrupting the oil production process. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an oil wellhead device equipped with a three-phase flow measuring instrument, provided by an embodiment of this utility model.

[0028] Figure label:

[0029] 10: Pipeline head; 11: Pipeline four-way body; 12: Pipeline hanger; 13: First valve; 14: Clamp flange; 15: Right-angle gate valve; 16: Pressure gauge; 17: Second valve; 20: Connecting four-way; 30: Blowout preventer assembly; 40: Inspection valve assembly; 41: Inspection branch gate valve; 42: First flange of pipeline; 50: Metering valve assembly; 51: Metering branch gate valve; 52: First tee; 53 60: Blind plug; 70: Oil-gas-water three-phase flow measuring instrument; 71: Calibration valve assembly; 72: Second tee; 73: Calibration branch gate valve; 74: First ball valve; 75: Third tee; 80: Second ball valve; 81: Oil transfer valve assembly; 82: Check valve; 83: Threaded flange; 84: Second flange of oil transfer pipeline; 85: Plug; 90: Casing flange; 100: Double male short joint; 110: Conversion flange. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to specific embodiments, but the implementation of the present invention is not limited thereto.

[0031] Example 1

[0032] Please see Figure 1 , Figure 1 yes Figure 1This is a schematic diagram of the structure of an oil wellhead device equipped with a three-phase flow measuring instrument, provided by an embodiment of this utility model.

[0033] This embodiment provides an oil wellhead device equipped with a three-phase flow measuring instrument, comprising: a tubing head 10, a connecting four-way valve 20, a blowout preventer assembly 30, a maintenance valve assembly 40, a metering valve assembly 50, an oil-gas-water three-phase flow measuring instrument 60, a calibration valve assembly 70, and an oil delivery valve assembly 80. The first port of the connecting four-way valve 20 is connected to the tubing head 10, the second port is connected to the blowout preventer assembly 30, the third port is connected to the maintenance valve assembly 40, and the fourth port is connected to the metering valve assembly 50. The metering valve assembly 50, the oil-gas-water three-phase flow measuring instrument 60, the calibration valve assembly 70, and the oil delivery valve assembly 80 are connected sequentially. The maintenance valve assembly 40 is connected to the oil delivery valve assembly 80 via an oil delivery pipeline.

[0034] In this embodiment, the lower end of the tubing head 10 is connected to the double male short section 100 via the casing flange 90. The upper end of the tubing head 10 is connected to the first port of the four-way connector 20 via the conversion flange 110.

[0035] Specifically, the tubing head 10 includes: a tubing four-way body 11, a tubing hanger 12, a first valve 13, a clamp flange 14, a right-angle stop valve 15, a pressure gauge 16, and a second valve 17. The upper end of the tubing four-way body 11 is connected to a conversion flange 110, and the lower end is connected to a casing flange 90. The left end is connected to one end of the right-angle stop valve 15 via the second valve 17, and the right end is connected to the clamp flange 14 via the first valve 13. The tubing hanger 12 is located inside the tubing four-way body 11 and is connected to the tubing. The pressure gauge 16 is located at the other end of the right-angle stop valve 15. Furthermore, the upper end of the double male short joint 100 is threaded to the casing flange 90, the lower end of the double male short joint 100 is threaded to the surface casing, the upper end of the tubing four-way body 11 is bolted to the conversion flange 110, and the lower end of the tubing four-way body 11 is bolted to the casing flange 90. The upper end of the connecting four-way 20 is connected to the blowout preventer assembly 30 and the sucker rod, and the lower end of the connecting four-way 20 is connected to the conversion flange 110 by clamp. The first valve 13 is connected to the clamp flange 14 by clamp.

[0036] In this embodiment, the maintenance valve assembly 40 includes a maintenance branch gate valve 41 and an oil pipeline first flange 42. One end of the maintenance branch gate valve 41 is connected to the third port of the four-way valve 20, and the other end of the maintenance branch gate valve 41 is connected to the oil pipeline through the oil pipeline first flange 42.

[0037] In this embodiment, the metering valve assembly 50 includes: a metering branch gate valve 51, a first three-way valve 52, and a blind plug 53. The first port of the first three-way valve 52 is connected to the fourth port of the four-way valve 20 via the metering branch gate valve 51; the second port of the first three-way valve 52 is connected to the oil-gas-water three-phase flow measuring instrument 60; and the third port of the first three-way valve 52 is connected to the blind plug 53.

[0038] Specifically, the maintenance branch gate valve 41 and the metering branch gate valve 51 are respectively clamped to the left and right ends of the connecting four-way valve 20. The left end of the maintenance branch gate valve 41 is bolted to the first flange 42 of the oil pipeline.

[0039] In this embodiment, the calibration valve assembly 70 includes: a second three-way valve 71, a calibration branch gate valve 72, a first ball valve 73, a third three-way valve 74, and a second ball valve 75. The first port of the second three-way valve 71 is connected to the oil-gas-water three-phase flow measuring instrument 60. The second port of the second three-way valve 71 is connected to the first port of the third three-way valve 74 via the calibration branch gate valve 72. The third port of the second three-way valve 71 is connected to one end of the first ball valve 73. The second port of the third three-way valve 74 is connected to the oil delivery valve assembly 80, and the third port of the third three-way valve 74 is connected to the second ball valve 75.

[0040] In this embodiment, the oil delivery valve assembly 80 includes: a check valve 81, a fourth tee 82, a threaded flange 83, a second oil delivery pipeline flange 84, and a plug 85. The first port of the fourth tee 82 is connected to the calibration valve assembly 70 via the check valve 81; the second port of the fourth tee 82 is connected to the threaded flange 83; and the third port of the fourth tee 82 is connected to the oil delivery pipeline via the second oil delivery pipeline flange 84. The plug 85 is threaded into the center hole of the threaded flange 83.

[0041] Specifically, the metering branch gate valve 51, the first tee 52, the oil-gas-water three-phase flow measuring instrument 60, the second tee 71, the calibration branch gate valve 72, the third tee 74, the check valve 81, and the fourth tee 82 are bolted together from left to right. A blind plug 53 is threaded to the upper end of the first tee 52. The first ball valve 73 and the second ball valve 75 are threaded to the upper ends of the second tee 71 and the third tee 74, respectively. A plug 85 is threaded to the center hole of the threaded flange 83 to seal the pipeline. The first flange 42 and the second flange 84 of the oil pipeline are both welded to the oil pipeline.

[0042] Furthermore, the metering branch gate valve 51, the first tee 52, the oil-gas-water three-phase flow measuring instrument 60, the second tee 71, the calibration branch gate valve 72, the third tee 74, the check valve 81, and the fourth tee 82 constitute the metering branch. The metering branch gate valve 51, the first tee 52, the oil-gas-water three-phase flow measuring instrument 60, the second tee 71, the calibration branch gate valve 72, the first ball valve 73, the second ball valve 75, the third tee 74, the check valve 81, and the fourth tee 82 constitute the calibration branch. The maintenance branch gate valve 41 and the first flange of the oil delivery pipe constitute the maintenance branch. According to the usage of the wellhead equipment, the operator selects the working state, opens the corresponding valve, and the oil flows from the bottom of the well through the double male short section 100 and the tubing four-way body 11 into the connecting four-way 20 and then into the corresponding branch. Furthermore, the maintenance branch gate valve 41, the first ball valve 73, and the second ball valve 75 are normally closed. When it is necessary to measure the components in the oil, the operator selects the metering mode, opens the metering branch gate valve 51 and the calibration branch gate valve 72, and ensures that the maintenance branch gate valve 41, the first ball valve 73 and the second ball valve 75 are closed. The oil flows into the metering branch from the connecting four-way valve 20, and flows sequentially through the metering branch gate valve 51, the first three-way valve 52, the oil-gas-water three-phase flow measuring instrument 60, the second three-way valve 71, the calibration branch gate valve 72, the third three-way valve 74, the check valve 81, the fourth three-way valve 82 and the second flange of the oil pipeline, and finally enters the oil pipeline. At this time, the metering mode is activated. When the oil-gas-water three-phase flow measuring instrument 60 needs maintenance or adjustment, the wellhead operator selects the maintenance mode, closes the metering branch gate valve 51 and the calibration branch gate valve 72, and ensures that the first ball valve 73 and the second ball valve 75 are closed. Then, the maintenance branch gate valve 41 is opened, and the oil flows into the maintenance branch from the connecting four-way valve 20, flows through the maintenance branch gate valve 41 and the first flange 42 of the oil pipeline in sequence, and finally flows into the oil pipeline. At this time, since the metering branch gate valve 51 and the calibration branch valve 72 are closed, no oil flows through the oil-gas-water three-phase flow measuring instrument 60, maintenance can be carried out without affecting the normal output of oil. After the three-phase flow measuring instrument 60 has been used for a certain period of time, the measurement results may be affected by the sediment deposition in the oil. Therefore, it is necessary to perform a calibration procedure for the three-phase flow measuring instrument 60. In this process, based on the measurement state, the wellhead operator selects the calibration state, connects the first ball valve 73 and the second ball valve 75 to the external calibration vehicle, opens the first ball valve 73 and the second ball valve 75 in sequence, and then closes the calibration branch gate valve 72 to perform equipment calibration. The oil enters the calibration vehicle from the first ball valve 73, and flows back through the second ball valve 75 to the third tee 74, check valve 81, fourth tee 82 and the second flange 84 of the oil pipeline, and finally flows into the oil pipeline. After the calibration is completed, the calibration branch gate valve 72 is opened in sequence, and the first ball valve 73 and the second ball valve 75 are closed to re-enter the measurement state.

[0043] Furthermore, the oil-gas-water three-phase flow measuring instrument 60 is connected to external processing equipment via wired or wireless means. The oil-gas-water three-phase flow measuring instrument 60 uses either the YC-J-III or YC-J-II oil-gas-water three-phase flow measuring instrument. The oil-gas-water three-phase flow measuring instrument 60 adopts a multi-sensor fusion measurement system and is equipped with an array of thermodynamic sensors, an electromagnetic water cut measurement sensor, a temperature sensor, and multiple pressure sensors. It can accurately measure key parameters such as oil well production, oil production, gas production, water cut, temperature, and pressure.

[0044] This invention provides an oil wellhead device equipped with a three-phase flow measuring instrument. Through a rational layout of the wellhead device's pipelines, the oil-gas-water three-phase flow measuring instrument is integrated onto the wellhead device, enabling real-time measurement of three-phase fluid parameters in a single well during oil production. It features a simple structure, small size, low cost, and high accuracy. Furthermore, it facilitates maintenance, disassembly, and calibration, ensuring normal oil output even during these processes and not disrupting the oil production process.

[0045] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. An oil production wellhead installation equipped with a three-phase flow measuring instrument, characterized in that, The oil pipe head (10), the connecting four-way (20), the blowout preventer box assembly (30), the overhaul valve assembly (40), the metering valve assembly (50), the oil-gas-water three-phase flow measuring instrument (60), the calibration valve assembly (70), and the oil delivery valve assembly (80), wherein, The first port of the connecting four-way (20) is connected to the oil pipe head (10), the second port is connected to the blowout preventer box assembly (30), the third port is connected to the overhaul valve assembly (40), and the fourth port is connected to the metering valve assembly (50); The metering valve assembly (50), the oil-gas-water three-phase flow measuring instrument (60), the calibration valve assembly (70), and the oil delivery valve assembly (80) are connected in sequence; The overhaul valve assembly (40) is connected to the oil delivery valve assembly (80) through the oil delivery pipeline. The lower end of the oil pipe head (10) is connected to the double male nipple (100) through the casing flange (90); 2. A production wellhead installation equipped with a three-phase flow measuring instrument according to claim 1, characterized in that, The upper end of the oil pipe head (10) is connected to the first port of the connecting four-way (20) through the conversion flange (110). The oil pipe head (10) comprises an oil pipe four-way body (11), an oil pipe hanger (12), a first valve (13), a clamp flange (14), a right-angle stop valve (15), a pressure gauge (16), and a second valve (17), wherein, 3. A wellhead installation equipped with a three-phase flow measuring instrument according to claim 2, characterized in that, The upper end of the oil pipe four-way body (11) is connected to the conversion flange (110), the lower end is connected to the casing flange (90), the left end is connected to one end of the right-angle stop valve (15) through the second valve (17), and the right end is connected to the clamp flange (14) through the first valve (13); The oil pipe hanger (12) is arranged inside the oil pipe four-way body (11), and the oil pipe hanger (12) is connected to the oil pipe; The pressure gauge (16) is arranged at the other end of the right-angle stop valve (15). The overhaul valve assembly (40) comprises an overhaul branch gate valve (41) and an oil delivery pipeline first flange (42), wherein, 4. The production wellhead apparatus equipped with a three-phase flow meter according to claim 1, characterized in that, One end of the overhaul branch gate valve (41) is connected to the third port of the connecting four-way (20), and the other end of the overhaul branch gate valve (41) is connected to the oil delivery pipeline through the oil delivery pipeline first flange (42). The metering valve assembly (50) comprises a metering branch gate valve (51), a first three-way (52), and a blind plug (53), wherein, 5. The production wellhead apparatus equipped with a three-phase flow meter according to claim 1, characterized in that, The first port of the first three-way (52) is connected to the fourth port of the connecting four-way (20) through the metering branch gate valve (51), the second port of the first three-way (52) is connected to the oil-gas-water three-phase flow measuring instrument (60), and the third port of the first three-way (52) is connected to the blind plug (53). The calibration valve assembly (70) comprises a second three-way (71), a calibration branch gate valve (72), a first ball valve (73), a third three-way (74), and a second ball valve (75), wherein, 6. An oil production wellhead installation equipped with a three-phase flow measuring instrument according to claim 1, characterized in that, ​ The first port of the second tee (71) is connected with the oil-gas-water three-phase flow measuring instrument (60), the second port of the second tee (71) is connected with the first port of the third tee (74) through the calibration branch valve (72), and the third port of the second tee (71) is connected with one end of the first ball valve (73); The second port of the third tee (74) is connected with the oil delivery valve assembly (80), and the third port of the third tee (74) is connected with the second ball valve (75).

7. An oil production wellhead installation equipped with a three-phase flow measuring instrument according to claim 1, characterized in that, The oil delivery valve assembly (80) comprises a check valve (81), a fourth tee (82), a screw flange (83), an oil pipeline second flange (84) and a plug (85), wherein The first port of the fourth tee (82) is connected with the calibration valve assembly (70) through the check valve (81), the second port of the fourth tee (82) is connected with the screw flange (83), and the third port of the fourth tee (82) is connected with the oil pipeline through the oil pipeline second flange (84); The plug (85) is threadedly connected with the central hole of the screw flange (83).

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