CN213450372U - Well head sampling flow device of reinjection type polymer injection well - Google Patents
Well head sampling flow device of reinjection type polymer injection well Download PDFInfo
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- CN213450372U CN213450372U CN202022239164.3U CN202022239164U CN213450372U CN 213450372 U CN213450372 U CN 213450372U CN 202022239164 U CN202022239164 U CN 202022239164U CN 213450372 U CN213450372 U CN 213450372U
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- reinjection
- valve
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- pipe
- ball valve
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- 238000005070 sampling Methods 0.000 title claims abstract description 59
- 229920000642 polymer Polymers 0.000 title claims abstract description 37
- 238000002347 injection Methods 0.000 title claims abstract description 36
- 239000007924 injection Substances 0.000 title claims abstract description 36
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- 239000000243 solution Substances 0.000 abstract description 12
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 239000012452 mother liquor Substances 0.000 abstract 1
- 239000010913 used oil Substances 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
A reinjection type polymer injection well wellhead sampling flow device comprises a polymer injection well wellhead and a sampling device; the sampling device comprises a sampling gate valve, a reinjection gate valve, a sampler body, a circulating pipe, a reinjection pipe, a circulating ball valve, a sampling ball valve, an emptying ball valve and a casing pressure testing ball valve; the left end of the sampling gate valve is connected with the emptying valve, the right end of the sampling gate valve is connected with the sampler body, the tail end of the sampler body is connected with the circulating pipe, and one end of the circulating pipe is connected with the reinjection pipe, so that a complete liquid flow channel is formed; the left end of the reinjection gate valve is connected with the sleeve valve, the right end of the reinjection gate valve is connected with a reinjection pipe, and the reinjection pipe is provided with an emptying ball valve and a sleeve pressure testing ball valve. The utility model discloses the well head sample of gathering well is annotated in mainly used oil field has solved former sample mode polymer mother liquor and has discharged the problem that causes environmental pollution big, and it is little to have solution chemical examination viscosity data error, characteristics such as safety ring protects.
Description
Technical Field
The utility model relates to an among the oil field polymer displacement of reservoir oil process flow, be exactly utilize the liquid circulation principle, wash the impurity of adhesion in the well head flow to the technical process in the oil jacket annular space, particularly a well head sampling flow device is gathered to reinjection formula notes.
Background
In order to ensure the oil displacement effect of the polymer, the viscosity of the wellhead of all polymer injection wells needs to be sampled and detected every week so as to accurately master the viscosity change conditions of links such as viscosity loss of a ground process flow, working performance of a polymer injection pump, errors of instruments and meters, solution proportioning errors and the like, and provide real injection data for polymer injection production and guidance effect analysis; moreover, the requirements of local environmental protection departments and oil fields on the environment are more and more strict, and various well liquids or emptying liquids (gas) cannot fall to the ground or be emptied to the ground.
The well head high pressure sampling mode that present oil field adopted mainly has following drawback, mainly shows:
firstly, the wellhead sampling valve has a great shearing effect on the polymer solution, and the actual injection viscosity index and the test data have a certain difference, so that accurate wellhead injection viscosity data cannot be provided;
secondly, before sampling, large discharge is discharged for washing impurities adhered to the inner wall of the sampler, the solution is qualified that no foreign matters exist, the discharge amount is about 3-5 times (about 8000 ml) of the inner volume of the sampler, and the discharged solution is discharged, so that certain pollution is caused to the environment and cost waste is caused;
thirdly, the sampler body is welded with a 16mm high-pressure short circuit for mounting and dismounting the sampling valve. Due to frequent disassembly, the screw thread is easy to wear, the danger of being ejected by high pressure exists when the sampling operation is carried out carelessly, and certain potential safety hazards exist.
In view of the defects of the field sampling method, a reinjection type polymer injection well wellhead sampling flow device is developed, the reinjection principle of oilfield produced water is mainly used for reference, high-pressure polymer solution flowing in a wellhead flow is reinjected into an oil jacket annular space of a well through the sampling device, the problem that emptying liquid is discharged without places is solved, the defects of environmental pollution, large error of test data and the like are overcome, and the reinjection type polymer injection well wellhead sampling flow device is simple to operate, high in safety, low in labor intensity of workers, good in popularization prospect and huge in social benefit.
Disclosure of Invention
The utility model aims at solving the problem that the existing technology is not enough, and designing a reinjection type polymer injection well wellhead sampling flow device.
The above purpose is realized by the following technical scheme:
a reinjection type polymer injection well wellhead sampling flow device comprises a polymer injection well wellhead and a sampling device; a reinjection type polymer injection well wellhead sampling flow device comprises a vent valve, a sleeve valve, an incoming water valve, a water injection valve and a main valve; the sampling device consists of a sampling gate valve, a reinjection gate valve, a sampler body, a circulating pipe, a reinjection pipe, a circulating ball valve, a sampling ball valve, an emptying ball valve and a casing pressure testing ball valve; the left end of the sampling gate valve is connected with the emptying valve, the right end of the sampling gate valve is connected with the sampler body, the tail end of the sampler body is connected with a circulating pipe, and one end of the circulating pipe is connected with a reinjection pipe, so that a complete liquid flow channel is formed; the left end of the reinjection gate valve is connected with the sleeve valve, the right end of the reinjection gate valve is connected with a reinjection pipe, and the reinjection pipe is provided with an emptying ball valve and a sleeve pressure testing ball valve.
The sampler body is designed into a cylindrical structure with the outer diameter of 73mm and the inner diameter of 62mm, the volume of the inner cavity of the sampler body is between 1000-plus-1500 ml, and the lower part of the tail end of the sampler body is provided with a sampling ball valve.
The circulating pipe is designed to be a circular pipe with the diameter of 25mm, and a circulating ball valve is arranged on the circulating pipe and used for cutting off or dredging the liquid flow channel.
A casing pressure test ball valve (209) is arranged on a return pipe (205) of the oil casing and used for detecting the pressure of an annular space H of the oil casing.
The utility model has the advantages that: borrow the oil field extraction water reinjection principle by reference, open the atmospheric valve in proper order, the sample gate valve, the circulation ball valve, the reinjection gate valve, the sleeve valve, make and annotate the high-pressure polymer solution that flows in gathering well head flow in through the oil jacket annular space of sampling device reinjection well, flow through the certain time erodees, adsorb impurity on the flow pipe wall, pour into oil jacket annular space, then close the sample gate valve, reinjection gate valve and circulation ball valve, open the sample ball valve, take out the polymer solution that this internal static of sampler persists under the state of non-pressure, the problem of the no department's emission of atmospheric fluid has been solved, environmental pollution and drawback such as chemical examination data error are big has been stopped, and easy operation, high safety, worker low in labor strength, have fine popularization prospect, social is huge.
Drawings
Fig. 1 is a schematic view of a front view structure of an embodiment of the present invention.
In the attached drawing, 1, a polymer injection well wellhead, 2, a sampling device, 101, an emptying valve, 102, a casing valve, 103, an incoming water valve, 104, a water injection valve, 105, a main valve, 201, a sampling gate valve, 202, a reinjection gate valve, 203, a sampler body, 204, a circulating pipe, 205, a reinjection pipe, 206, a circulating ball valve, 207, a sampling ball valve, 208, an emptying ball valve, 209, a casing pressure testing ball valve and H, an oil casing annular space.
Detailed Description
The following further explains the implementation of the present invention with reference to the drawings:
a reinjection type polymer injection well wellhead sampling flow device is composed of a polymer injection well wellhead 1 and a sampling device 2; a reinjection type polymer injection well wellhead sampling flow device is characterized in that a polymer injection well wellhead 1 consists of an emptying valve (101), a sleeve valve 102, an incoming water valve 103, a water injection valve 104 and a main valve 105; the sampling device 2 consists of a sampling gate valve 201, a reinjection gate valve 202, a sampler body 203, a circulating pipe 204, a reinjection pipe 205, a circulating ball valve 206, a sampling ball valve 207, a venting ball valve 208 and a casing pressure testing ball valve 209; the left end of the sampling gate valve 201 is connected with the emptying valve 101, the right end of the sampling gate valve is connected with the sampler body 203, the tail end of the sampler body 203 is connected with the circulating pipe 204, one end of the circulating pipe 204 is connected with the reinjection pipe 205 to form a complete liquid flow channel, the left end of the reinjection gate valve 202 is connected with the casing valve 102, the right end of the reinjection pipe 205 is connected with the reinjection pipe 205, and the reinjection pipe 205 is provided with an emptying ball valve 208 and a casing pressure testing ball valve 209.
The sampler body 203 is designed into a cylindrical structure with an outer diameter of 73mm and an inner diameter of 62mm, the volume of the inner cavity of the sampler body is between 1000 ml and 1500 ml, and the lower part of the tail end of the sampler body 203 is provided with a sampling ball valve 207.
The circulation pipe 204 is designed to be a circular pipe with a diameter of 25mm, and a circulation ball valve 206 is arranged on the circulation pipe 204 and used for cutting off or dredging the liquid flow channel.
And a casing pressure testing ball valve (209) is arranged on the return pipe (205) and is used for detecting the pressure of the annular space H of the oil casing.
The working principle is as follows: when the polymer injection well is normally injected, the injection pressure of an oil pipe of the well is far higher than the pressure of the annular space H of the oil sleeve, so that the oil field produced water reinjection principle is used for reference, and the requirements of low consumption and environmental protection are met.
The normal injection of polymer solution is through coming water valve 103, water injection valve 104, main valve 105 and pouring into the well, during the sample, open air release valve 101 in proper order, sample gate valve 201, circulation ball valve 206, reinjection gate valve 202, casing valve 102, make the high-pressure polymer solution that flows in the flow of notes polymer well wellhead 1 reinject to the oil jacket annular space H of well through sampling device 1 in, flow through certain time erodees, with the adsorbed impurity of flow pipe wall and sampler body 203 inner chamber, pour into in the oil jacket annular space H.
During sampling, the sampling gate valve 201, the reinjection gate valve 202 and the circulating ball valve 206 are closed, the sampling ball valve 207 is opened, the polymer solution which is statically reserved in the sampler body 203 is taken out in a non-pressure state and used for detecting viscosity data, and after sampling is finished, the emptying ball valve 208 is opened, the residual solution in the device is discharged, and the device is placed to be caked or frozen in winter.
Claims (4)
1. A reinjection type polymer injection well wellhead sampling flow device is composed of a polymer injection well wellhead (1) and a sampling device (2); the method is characterized in that: the polymer injection well wellhead (1) of the reinjection type polymer injection well wellhead sampling flow process device consists of an emptying valve (101), a casing valve (102), an incoming water valve (103), a water injection valve (104) and a main valve (105); the sampling device (2) consists of a sampling gate valve (201), a reinjection gate valve (202), a sampler body (203), a circulating pipe (204), a reinjection pipe (205), a circulating ball valve (206), a sampling ball valve (207), an emptying ball valve (208) and a casing pressure testing ball valve (209); the left end of the sampling gate valve (201) is connected with the emptying valve (101), the right end of the sampling gate valve is connected with the sampler body (203), the tail end of the sampler body (203) is connected with the circulating pipe (204), and one end of the circulating pipe (204) is connected with the reinjection pipe (205) to form a complete liquid flow channel; the left end of the reinjection gate valve (202) is connected with the sleeve valve (102), the right end of the reinjection gate valve is connected with a reinjection pipe (205), and the reinjection pipe (205) is provided with a vent ball valve (208) and a sleeve pressure testing ball valve (209).
2. The wellhead sampling process device of the reinjection type polymer injection well as defined in claim 1, which is characterized in that: the sampler body (203) is designed into a cylindrical structure with the outer diameter of 73mm and the inner diameter of 62mm, the volume of the inner cavity of the sampler body is between 1000 ml and 1500 ml, and the lower part of the tail end of the sampler body (203) is provided with a sampling ball valve (207).
3. The wellhead sampling process device of the reinjection type polymer injection well as defined in claim 1, which is characterized in that: the circulating pipe (204) is designed to be a circular pipe with the diameter of 25mm, and a circulating ball valve (206) is arranged on the circulating pipe (204) and used for cutting off or dredging the liquid flow channel.
4. The wellhead sampling process device of the reinjection type polymer injection well as defined in claim 1, which is characterized in that: and a casing pressure testing ball valve (209) is arranged on the return pipe (205) and is used for detecting the pressure of the annular space H of the oil casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022239164.3U CN213450372U (en) | 2020-10-10 | 2020-10-10 | Well head sampling flow device of reinjection type polymer injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022239164.3U CN213450372U (en) | 2020-10-10 | 2020-10-10 | Well head sampling flow device of reinjection type polymer injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213450372U true CN213450372U (en) | 2021-06-15 |
Family
ID=76288243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022239164.3U Expired - Fee Related CN213450372U (en) | 2020-10-10 | 2020-10-10 | Well head sampling flow device of reinjection type polymer injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213450372U (en) |
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2020
- 2020-10-10 CN CN202022239164.3U patent/CN213450372U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210615 |