CN112324432A - Gas well wellhead prying and liquid sampling device - Google Patents
Gas well wellhead prying and liquid sampling device Download PDFInfo
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- CN112324432A CN112324432A CN202011375500.5A CN202011375500A CN112324432A CN 112324432 A CN112324432 A CN 112324432A CN 202011375500 A CN202011375500 A CN 202011375500A CN 112324432 A CN112324432 A CN 112324432A
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- 239000007788 liquid Substances 0.000 title claims abstract description 166
- 238000005070 sampling Methods 0.000 title claims abstract description 34
- 238000003860 storage Methods 0.000 claims abstract description 77
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000000926 separation method Methods 0.000 claims abstract description 38
- 239000007789 gas Substances 0.000 claims abstract description 37
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 35
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002360 explosive Substances 0.000 abstract description 3
- 238000007664 blowing Methods 0.000 abstract description 2
- 230000001174 ascending effect Effects 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000005514 two-phase flow Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/086—Withdrawing samples at the surface
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a skid-mounted liquid sampling device for a gas well wellhead, which comprises the following basic components: a liquid storage cylinder, a separation cylinder and a nitrogen bottle are arranged on the fixed platform and the table surface of the fixed platform; the liquid storage cylinder and the separating cylinder are of a cylindrical structure with two closed ends and are installed on the fixed platform in an inclined mode, and one end, in the inclined direction, of the liquid storage cylinder is connected with one end, in the inclined direction, of the separating cylinder through the vent pipe and the return pipe. The oblique downward one end of liquid storage cylinder is equipped with sample connection, introduction port and liquid level observation window, and the introduction port of liquid storage cylinder passes through withstand voltage pipeline and connects the nitrogen cylinder, and the inner chamber of separator cylinder is equipped with the gas-liquid filter screen, and its oblique ascending one end still is equipped with the blast pipe. The device can effectively solve the problem of difficult sampling caused by blowing out of the liquid sample during the sampling of the water bottle and the problem of potential safety hazard caused by flammable and explosive gas in the sample. In addition, the invention has the advantages of simple structure, simple and convenient operation, easy disassembly and assembly and easy carrying.
Description
The technical field is as follows:
the invention relates to the technical field of gas field gas production, in particular to a gas well wellhead prying and liquid sample taking device in a natural gas production process.
Background art:
in a gas production process, a liquid sampling operation is often performed on a gas well in order to know the liquid property of the gas well. In the operation process, a water bottle is generally required to be used for receiving a liquid sample at a well mouth and a skid-mounted part, but the liquid sample in the bottle can be blown out due to certain pressure existing at the well mouth and the skid-mounted part, so that the liquid sample is difficult to take. In addition, natural gas belongs to flammable and explosive gas, and certain potential safety hazards exist when containers such as water bottles are used for directly receiving liquid samples.
The invention content is as follows:
in view of the above, the invention aims to provide a gas well wellhead prying and liquid sampling device which is convenient to carry, simple and convenient to operate, safe and reliable, is mainly used for prying and liquid sampling of a gas well wellhead, and solves the problems that liquid cannot be sampled due to high pressure and safety risks exist.
The technical scheme of the invention is as follows:
gas well wellhead sled dress liquid sample device includes: a liquid storage cylinder, a separation cylinder and a nitrogen bottle are arranged on the fixed platform and the table surface of the fixed platform; the liquid storage cylinder and the separation cylinder are of a cylindrical structure with two closed ends and are obliquely arranged on the fixed platform, one obliquely upward end of the liquid storage cylinder is connected with one obliquely downward end of the separation cylinder through a vent pipe and a return pipe so as to realize the communication of inner cavities of the vent pipe and the separation cylinder, the pipe bodies of the vent pipe and the return pipe are kept horizontal, and the position of the vent pipe is higher than that of the return pipe; a sampling port, a sample inlet and a liquid level observation window are arranged at one obliquely downward end of the liquid storage cylinder, a sampling valve is arranged at the front end of the sampling port, the front end of the sample inlet is connected with a three-way valve, one of the two remaining inlets on the three-way valve is connected with a sample inlet pipe, the other inlet is connected with a pressure-resistant pipeline, the other end of the pressure-resistant pipeline is connected with the nitrogen bottle, and a pressure regulating valve is arranged at the joint of the nitrogen bottle and the pressure-resistant pipeline; the inner cavity of the separation cylinder is provided with a gas-liquid filter screen, and one end of the separation cylinder, which is inclined upwards, is provided with an exhaust pipe communicated with the outside.
Furthermore, a plurality of liquid baffle plates extending from the inner cavity wall are arranged in the inner cavity of the liquid storage cylinder along the axial direction of the cylinder, and the liquid baffle plates are vertical or approximately vertical to the axial direction of the liquid storage cylinder.
Furthermore, the inner diameter of the exhaust pipe on the separating cylinder is obviously larger than that of the sample inlet on the liquid storage cylinder.
Furthermore, the gas-liquid filter screen is positioned in the middle of the inner cavity of the separation barrel, and positioning fences are arranged on two sides close to the gas-liquid filter screen.
Furthermore, the two ends of the liquid storage cylinder and the separating cylinder are both hemispherical end parts, and the end parts of one ends of the liquid storage cylinder and the separating cylinder, which are opposite to the positions of the vent pipe and the return pipe, are both in threaded connection with the middle cylinder main body.
Furthermore, in the inner cavity of the separating cylinder, a positioning fence close to one side of the vent pipe and the return pipe is fixedly arranged on the wall of the inner cavity of the separating cylinder, and a positioning fence at the other side is connected with a detachable end part with threads through a rod piece along the axial direction of the separating cylinder.
Further, the liquid storage cylinder, the separating cylinder and the nitrogen cylinder are detachably arranged on the fixing table; the vent pipe and the return pipe are detachably connected to the liquid storage cylinder and the separating cylinder.
Preferably, the detachable mounting structure between the liquid storage cylinder, the separating cylinder, the nitrogen cylinder and the fixed platform is as follows: the surfaces of the liquid storage cylinder, the separating cylinder and the nitrogen cylinder are respectively provided with a plurality of fin-shaped supporting sheets along the same axial straight line, and the supporting sheets are provided with screw holes; fixing pieces which are completely corresponding to the number and the positions of the supporting pieces are respectively arranged at the installation positions of the liquid storage cylinder, the separating cylinder and the nitrogen cylinder on the fixing table, and screw holes are formed in the fixing pieces; each supporting sheet and the corresponding fixing sheet are connected and fixed with each other through bolts.
Further, the lateral part of fixed station is equipped with the handle, and the top of fixed station is equipped with the confined safety cover, offers the window that can open or close on the safety cover.
On the basis, the invention provides a method for sampling by using the skid-mounted liquid sampling device of the gas well wellhead, which comprises the following steps:
1) opening a pressure regulating valve on a pressure-resistant pipeline connected with the nitrogen cylinder, and simultaneously opening an inlet valve of the pressure-resistant pipeline on a three-way valve (the inlet valve connected with a sample inlet pipe on the three-way valve is kept in a closed state), so that nitrogen in the nitrogen cylinder sequentially enters a liquid storage cylinder and a separation cylinder;
2) when air in the liquid storage cylinder and the separation cylinder is basically replaced by nitrogen, closing the pressure regulating valve and an inlet valve connected with a pressure-resistant pipeline on the three-way valve, connecting a sample inlet pipe of the liquid storage cylinder with a wellhead of a gas well by a skid cock, and opening the inlet valve connected with the sample inlet pipe on the three-way valve to enable a sample in the gas well to sequentially enter the liquid storage cylinder and the separation cylinder;
3) look over the liquid sample volume in the section of thick bamboo through the liquid level observation window of liquid storage cylinder, open the sample valve of sample connection front end and collect the liquid sample when the liquid sample volume reaches required collection volume.
The gas well wellhead prying and sampling device provided by the invention is specially used for gas well wellhead prying and sampling, and can effectively solve the problems of difficult sampling caused by blowing out of a liquid sample during sampling of a water bottle and potential safety hazards caused by flammable and explosive gases in a sample. In addition, the invention has the advantages of simple structure, simple and convenient operation, easy disassembly and assembly and easy carrying.
Description of the drawings:
FIG. 1 is a schematic diagram of the overall structure of the gas well wellhead prying and liquid sample taking device.
Fig. 2 is a side sectional view of the separator bowl (the ball-type end on the right side of the figure is separated from the bowl body).
Fig. 3 is a schematic structural diagram of a positioning fence at an axial view angle of the separation drum, wherein a is the positioning fence at the left side of the gas-liquid filter screen in fig. 2, and b is the positioning fence at the right side of the gas-liquid filter screen in fig. 2.
Fig. 4 is a schematic side sectional view of the cartridge (the ball-type end portion on the right side in the figure is separated from the cartridge main body).
Fig. 5 is a schematic structural diagram of the liquid blocking plate at the axial view angle of the liquid storage cylinder, wherein a is the liquid blocking plate near the left side in the inner cavity of the liquid storage cylinder in fig. 4, and b is the liquid blocking plate near the right side in the inner cavity of the liquid storage cylinder in fig. 4.
FIG. 6 is a schematic view showing the relative positions of the fixing base, the fixing piece provided thereon, and the screw hole provided on the fixing piece.
Fig. 7 is an external structure schematic diagram of the gas well wellhead prying and liquid sampling device.
The specific implementation mode is as follows:
the technical solution of the present invention is described in detail below with reference to the accompanying drawings.
As shown in figure 1, the gas well wellhead prying and liquid sampling device comprises: the fixed platform 1 and a liquid storage cylinder 2, a separation cylinder 3 and a nitrogen cylinder 4 which are arranged on the platform surface thereof; the liquid storage cylinder 2 and the separation cylinder 3 are both of a cylindrical structure with two closed ends and are obliquely arranged on the fixed platform 1, one obliquely upward end of the liquid storage cylinder 2 is connected with one obliquely downward end of the separation cylinder 3 through a vent pipe 5 and a return pipe 6 so as to realize the communication of inner cavities of the vent pipe 5 and the return pipe 6, the pipe bodies of the vent pipe 5 and the return pipe 6 are kept horizontal, and the position of the vent pipe 5 is higher than that of the return pipe 6; a sampling port 7, a sample inlet 8 and a liquid level observation window 9 are arranged at one downward inclined end of the liquid storage cylinder 2, a sampling valve 10 is arranged at the front end of the sampling port 7, the front end of the sample inlet 8 is connected with a three-way valve 11, one of the two remaining inlets on the three-way valve 11 is connected with a sample inlet pipe 12, the other inlet is connected with a pressure-resistant pipeline 13, the other end of the pressure-resistant pipeline 13 is connected with the nitrogen bottle 4, and a pressure regulating valve 14 is arranged at the joint of the nitrogen bottle 4 and the pressure-resistant pipeline 13; the inner cavity of the separation cylinder 3 is provided with a gas-liquid filter screen 15, and one end of the separation cylinder 3, which is inclined upwards, is provided with an exhaust pipe 16 communicated with the outside.
As shown in fig. 4 and 5, a plurality of liquid baffle plates 17 extending from the inner cavity wall are arranged in the inner cavity of the liquid storage cylinder 2 along the axial direction of the cylinder, and the liquid baffle plates 17 are perpendicular or approximately perpendicular to the axial direction of the liquid storage cylinder 2. In this embodiment, the number of the liquid baffle plates 17 is 2, and the liquid baffle plates are arranged in the axial direction of the liquid storage cylinder 2. The liquid baffle 17 can be used for the initial separation of gas-liquid two-phase flow, when a sample enters the liquid storage barrel 2, the liquid baffle 17 forms retardation to the sample to a certain degree, liquid components in the sample are attached to the liquid baffle 17 and are condensed into liquid drops, and the liquid drops fall and flow back to the obliquely downward end of the liquid storage barrel 2.
The internal diameter of 16 exhaust pipes on the cylinder 3 is obviously greater than the internal diameter of the sample inlet 8 on the liquid storage cylinder 2, so that the air pressure of the inner cavities of the liquid storage cylinder 2 and the cylinder 3 is effectively reduced, the safe sampling is further ensured, and the circulation of samples in the cylinder is also facilitated.
The gas-liquid filter screen 15 is positioned in the middle of the inner cavity of the separation cylinder 3, and positioning fences 18 are arranged on two sides close to the gas-liquid filter screen 15 to prevent the gas-liquid filter screen 15 from sliding towards one end due to the inclined state of the separation cylinder 2, so that the sample circulation is blocked and the gas-liquid separation efficiency is reduced. In this embodiment, a positioning fence 18 on one side of the separating cylinder 3 adjacent to the vent pipe 5 and the return pipe 6 is fixedly mounted on the inner cavity wall of the separating cylinder 3, and a positioning fence 18 on the other side is connected with a threaded, detachable end part through a rod piece 19 along the axial direction of the separating cylinder 3 (shown in fig. 2). The positioning fence 18 connected with the rod 19 can be removed along with the threaded end, thereby facilitating the removal, cleaning or replacement of the gas-liquid filter screen 15 by an operator. The outer frame of the positioning fence 18 adopted by the embodiment is circular to be matched with the inner cavity wall of the separating cylinder 3, the frame body is internally provided with the railings which are arranged in parallel, the frame body of the positioning fence 18 connected with the rod piece 19 is also internally provided with the cross railing 181, the center of the cross railing 181 is basically coincided with the circle center of the frame body (shown in fig. 3), the rod piece 19 is connected with the center of the cross railing 181, and the structural design can increase the firm degree of connection.
Both ends of the liquid storage cylinder 2 and the separating cylinder 3 are hemispherical end parts, and the end parts of one ends of the liquid storage cylinder 2 and the separating cylinder 3, which are opposite to the positions of the vent pipe 5 and the return pipe 6 (namely, when the liquid storage cylinder is installed on the fixed platform 1, the end part of one end of the liquid storage cylinder 2, which inclines downwards, and the end part of one end of the separating cylinder 3, which inclines upwards) are connected with the middle cylinder main body through threads. The liquid storage cylinder 2 and the separating cylinder 3 are provided with detachable end parts, so that an operator can clean and replace the inner cavity of the cylinder, namely the inner cavity part.
The liquid storage cylinder 2, the separating cylinder 3 and the nitrogen cylinder 4 are detachably arranged on the fixed platform 1; the vent pipe 5 and the return pipe 6 are detachably connected to the liquid storage cylinder 2 and the separating cylinder 3 through threads. In this embodiment, the detachable mounting structure between the liquid storage cylinder 2, the separation cylinder 3, the nitrogen gas cylinder 4 and the fixing table 1 is as follows: the surfaces of the liquid storage cylinder 2, the separating cylinder 3 and the nitrogen cylinder 4 are respectively provided with a plurality of fin-shaped supporting sheets 20 along the same axial straight line, and the supporting sheets 20 are provided with screw holes 21 (shown in figures 1, 2 and 4); the mounting positions of the liquid storage cylinder 2, the separating cylinder 3 and the nitrogen gas cylinder 4 on the fixed platform 1 are respectively provided with fixing pieces 22 the number and the positions of which completely correspond to those of the supporting pieces 20, and the fixing pieces 22 are provided with screw holes 21 (shown in figure 6); each blade 20 is secured to its corresponding securing tab 22 by a bolted connection.
The side part of the fixed table 1 is provided with a handle 23 so as to be convenient for carrying and carrying the whole device; a closed protective cover 24 is arranged above the fixed table 1 to protect equipment on the fixed table 1; the protective cover 24 is provided with a window 25 which can be opened or closed. In the present embodiment, the window 25 is provided on the front surface of the protective cover 24 (shown in fig. 7).
The operation method for sampling by utilizing the gas well wellhead prying and mounting liquid sample taking device comprises the following steps:
1) opening a pressure regulating valve 14 on a pressure-resistant pipeline 13 connected with a nitrogen cylinder 4, simultaneously opening an inlet valve of the pressure-resistant pipeline 13 on a three-way valve 11, simultaneously keeping the inlet valve connected with a sampling pipe 12 on the three-way valve 11 in a closed state, under the action of the internal pressure of the nitrogen cylinder, enabling nitrogen to enter a liquid storage cylinder 2 through the pressure-resistant pipeline 13 and continue to enter a separation cylinder 3 through an air pipe 5 and a return pipe 6, discharging original air in the liquid storage cylinder 2 and the separation cylinder 3 through an exhaust pipe 16 until the air in the liquid storage cylinder 2 and the separation cylinder 3 is basically or completely replaced by the nitrogen, and discharging redundant nitrogen through the exhaust pipe 16 at the moment. The step can provide a high-concentration nitrogen environment for gas well sampling, and potential safety hazards caused by natural gas components in the sample are avoided.
2) Closing the pressure regulating valve 14 and an inlet valve connected with the pressure-resistant pipeline 13 on the three-way valve 11, connecting the sample inlet pipe 12 of the liquid storage cylinder 2 with a wellhead skid cock of a gas well, and opening the inlet valve connected with the sample inlet pipe 12 on the three-way valve 11, so that samples in the gas well sequentially enter the liquid storage cylinder 2 and the separating cylinder 3; when a sample enters the liquid storage barrel 2, the liquid baffle plate 17 forms a certain degree of retardation on the sample, liquid components in the sample are attached to the liquid baffle plate 17 and condensed into liquid drops, and the liquid drops fall and flow back to the obliquely downward end of the liquid storage barrel 2, so that the primary separation of the gas-liquid two-phase flow of the sample is completed. After the sample enters the separation cylinder 3 through the air pipe 5 and the return pipe 6, the gas-liquid two phases in the sample are further separated through the gas-liquid filter screen 15, the liquid components therein are blocked by the gas-liquid filter screen 15 and flow back to the downward inclined end of the separation cylinder 3, and then enter the liquid storage cylinder 2 through the return pipe 6 and finally stored at the downward inclined end of the liquid storage cylinder 2.
3) The liquid sample volume accumulated in the barrel is checked through the liquid level observation window 9 of the liquid storage barrel 2 in the sampling process, and the sampling valve 10 at the front end of the sampling port 7 is opened to collect the liquid sample when the liquid sample volume reaches the required collection amount.
The above embodiments are only for illustrating the present invention, and all equivalent changes and modifications made on the basis of the technical solutions of the present invention should not be excluded from the scope of the present invention.
Claims (9)
1. The utility model provides a gas well wellhead sled dress liquid sample device which characterized in that includes: a liquid storage cylinder, a separation cylinder and a nitrogen bottle are arranged on the fixed platform and the table surface of the fixed platform; the liquid storage cylinder and the separation cylinder are of a cylindrical structure with two closed ends and are obliquely arranged on the fixed platform, one obliquely upward end of the liquid storage cylinder is connected with one obliquely downward end of the separation cylinder through a vent pipe and a return pipe so as to realize the communication of inner cavities of the vent pipe and the separation cylinder, the pipe bodies of the vent pipe and the return pipe are kept horizontal, and the position of the vent pipe is higher than that of the return pipe; a sampling port, a sample inlet and a liquid level observation window are arranged at one obliquely downward end of the liquid storage cylinder, a sampling valve is arranged at the front end of the sampling port, the front end of the sample inlet is connected with a three-way valve, one of the two remaining inlets on the three-way valve is connected with a sample inlet pipe, the other inlet is connected with a pressure-resistant pipeline, the other end of the pressure-resistant pipeline is connected with the nitrogen bottle, and a pressure regulating valve is arranged at the joint of the nitrogen bottle and the pressure-resistant pipeline; the inner cavity of the separation cylinder is provided with a gas-liquid filter screen, and one end of the separation cylinder, which is inclined upwards, is provided with an exhaust pipe communicated with the outside.
2. The gas well wellhead skid-mounted liquid sample taking device as recited in claim 1, wherein: a plurality of liquid baffle plates extending out of the inner cavity wall are arranged in the inner cavity of the liquid storage cylinder along the axial direction of the cylinder, and the liquid baffle plates are vertical or approximately vertical to the axial direction of the liquid storage cylinder; the inner diameter of the exhaust pipe on the separating cylinder is obviously larger than that of the sample inlet on the liquid storage cylinder.
3. The gas well wellhead skid-mounted liquid sample taking device as claimed in claim 1 or 2, wherein: the gas-liquid filter screen is positioned in the middle of the inner cavity of the separation barrel, and positioning fences are arranged on two sides close to the gas-liquid filter screen.
4. The gas well wellhead prying and liquid sample taking device as set forth in claim 3, wherein: the both ends of liquid storage cylinder and separator are hemispherical tip, and the tip and the middle part section of thick bamboo main part of the one end relative with breather pipe and back flow position on liquid storage cylinder and the separator all with threaded connection.
5. The gas well wellhead prying and liquid sample taking device as set forth in claim 4, wherein: in the inner cavity of the separating cylinder, a positioning fence close to one side of the vent pipe and the return pipe is fixedly arranged on the wall of the inner cavity of the separating cylinder, and the positioning fence at the other side is connected with a detachable end part with threads through a rod piece along the axial direction of the separating cylinder.
6. The gas well wellhead skid-mounted liquid sample taking device as recited in claim 5, wherein: the liquid storage cylinder, the separating cylinder and the nitrogen cylinder are detachably arranged on the fixing table; the vent pipe and the return pipe are detachably connected to the liquid storage cylinder and the separating cylinder.
7. The gas well wellhead skid-mounted liquid sample taking device as recited in claim 6, wherein: the detachable mounting structure between the liquid storage cylinder, the separating cylinder, the nitrogen cylinder and the fixed platform is as follows: the surfaces of the liquid storage cylinder, the separating cylinder and the nitrogen cylinder are respectively provided with a plurality of fin-shaped supporting sheets along the same axial straight line, and the supporting sheets are provided with screw holes; fixing pieces which are completely corresponding to the supporting pieces in number and position are respectively arranged at the mounting positions of the liquid storage cylinder, the separating cylinder and the nitrogen cylinder on the fixing table, and screw holes are formed in the fixing pieces; each supporting sheet and the corresponding fixing sheet are connected and fixed with each other through bolts.
8. The gas well wellhead skid-mounted liquid sample taking device as recited in claim 7, wherein: the lateral part of fixed station is equipped with the handle, and the top of fixed station is equipped with the confined safety cover, offers the window that can open or close on the safety cover.
9. A method for sampling by using the gas well wellhead prying liquid sampling device of claim 1, comprising the following steps:
1) opening a pressure regulating valve on a pressure-resistant pipeline connected with the nitrogen cylinder, and simultaneously opening an inlet valve of the pressure-resistant pipeline on the three-way valve, so that nitrogen in the nitrogen cylinder sequentially enters the liquid storage cylinder and the separation cylinder;
2) when air in the liquid storage cylinder and the separation cylinder is basically replaced by nitrogen, closing the pressure regulating valve and an inlet valve connected with a pressure-resistant pipeline on the three-way valve, connecting a sample inlet pipe of the liquid storage cylinder with a wellhead of a gas well by a skid cock, and opening the inlet valve connected with the sample inlet pipe on the three-way valve to enable a sample in the gas well to sequentially enter the liquid storage cylinder and the separation cylinder;
3) look over the liquid sample volume in the section of thick bamboo through the liquid level observation window of liquid storage cylinder, open the sample valve of sample connection front end and collect the liquid sample when the liquid sample volume reaches required collection volume.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011375500.5A CN112324432B (en) | 2020-11-30 | 2020-11-30 | Gas well wellhead prying and liquid sampling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011375500.5A CN112324432B (en) | 2020-11-30 | 2020-11-30 | Gas well wellhead prying and liquid sampling device |
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| CN112324432B CN112324432B (en) | 2022-03-08 |
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| CN106517396A (en) * | 2016-10-25 | 2017-03-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | High-pressure gas-liquid separation control device and control method thereof |
| CN206220961U (en) * | 2016-11-07 | 2017-06-06 | 中国石油天然气股份有限公司 | Gas well sampler |
| CN106837293A (en) * | 2017-02-06 | 2017-06-13 | 青岛理工大学 | Incline tubular type H types crude oil ON-LINE SEPARATION method under water |
| CN206801548U (en) * | 2017-04-29 | 2017-12-26 | 西安长庆科技工程有限责任公司 | A kind of two-phase precipitation skid-mounted unit |
| CN111732248A (en) * | 2020-07-11 | 2020-10-02 | 南通佳昱环保科技有限公司 | Water treatment engineering is with purifying sewage treatment plant |
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