CN213743355U - Sulfur-containing oil well chemical agent injection system - Google Patents
Sulfur-containing oil well chemical agent injection system Download PDFInfo
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- CN213743355U CN213743355U CN202022234827.2U CN202022234827U CN213743355U CN 213743355 U CN213743355 U CN 213743355U CN 202022234827 U CN202022234827 U CN 202022234827U CN 213743355 U CN213743355 U CN 213743355U
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Abstract
The utility model relates to a sulfur-containing oil well chemical agent injection system, which comprises a chemical agent container, a chemical feeding pump and a hydraulic control pipeline, wherein the chemical agent container is connected with the chemical feeding pump, a chemical conveying check valve, a sleeve valve and an underground injection device in sequence through the hydraulic control pipeline; the injection device is connected in an oil pipe column above the packer, and the packer is positioned above the sulfur-containing oil-gas layer; the injection device mainly comprises an outer shell, an injection agent conveying check valve and an agent injection pipe, wherein the injection agent conveying check valve is connected to the agent injection pipe, and a hydraulic control pipeline penetrates into the outer shell and is connected with the injection agent conveying check valve. After the packer in the oil pipe column seals the oil sleeve annulus, the sulfur-containing oil gas can be prevented from entering the sleeve, the corrosion and sulfur brittleness influence of the hydrogen sulfide on the inner wall of the sleeve and the outer wall of the oil pipe are substantially prevented, the sulfur removal effect is stable, and the source treatment of the hydrogen sulfide in the sulfur-containing oil gas well is realized.
Description
Technical Field
The utility model belongs to the medicament injection equipment of oil and gas well of petroleum industry, especially a contain sulphur oil well chemical agent injection system, be particularly useful for containing sulphur oil and gas well.
Background
Hydrogen sulfide is a colorless, highly toxic, acidic gas, soluble in water, and easily soluble in solvents such as alcohols and petroleum. The hydrogen sulfide has strong corrosivity, is easy to cause hydrogen embrittlement and stress cracking of metal, and causes safety accidents, and meanwhile, the toxicity of the hydrogen sulfide seriously threatens the life health of oil well field operators. In the process of oil field development, primary hydrogen sulfide or secondary hydrogen sulfide damage phenomena are increasing day by day, and the development of hydrogen sulfide-containing oil and gas reservoirs becomes an important component of oil and gas exploitation.
At present, the sulfur removal process for the production of the sulfur-containing well at home and abroad mainly comprises two processes:
firstly, the oil gas is lifted to the ground and then enters a gas collecting station for centralized desulphurization treatment, the method is mainly applied to gas wells or oil wells with strong self-blowing capacity, the investment cost is high, the device equipment is complex, and oil sleeves and well heads are exposed in the environment of sulfur-containing oil gas, tools made of high-sulfur-resistant materials are needed, so that the exploitation cost is greatly increased;
the other casing desulfurizing process is to add chemical desulfurizing agent into oil well via casing and to react with hydrogen sulfide at well bottom to protect oil casing and well head. However, the process has certain limitations from the actual operation situation on site, the process injects the sulfur removal agent into a shaft in a general mode, the sulfur removal agent is mixed with sulfur-containing oil gas at the well bottom, and the sulfur removal agent is continuously subjected to chemical reaction along with the migration process of produced oil gas to remove hydrogen sulfide in the oil gas, but the process is a concentration diffusion process, and the agent can be diffused to the well bottom to be mixed with the oil gas after a certain concentration field is established in an oil sleeve annulus, so that the reaction efficiency is low, and the dosage is large. On-site tests show that the utilization rate of the medicine is less than 50%, the cost is too high, the economic benefit is low, the protective effect on a shaft is poor, the casing is corroded after long-time production, and great potential safety hazards exist.
In order to solve the problem of hydrogen sulfide in oil and gas production, the following related devices are provided:
1. the utility model provides an oil well hydrogen sulfide automated inspection and intelligence add medicine device of handling, patent number (CN 201810483262.6), the utility model discloses an oil well hydrogen sulfide automated inspection and intelligence add medicine device of handling, the device comprises detecting element, medicine unit and PLC controller, and detecting element and medicine unit are installed respectively on the sleeve pipe gate valve at oil well sleeve pipe both ends, and the PLC controller is connected with detecting element and medicine unit respectively through wired or wireless mode. The utility model adopts the cyclone and stirring heating two-stage gas-liquid separation process, and can effectively separate out the hydrogen sulfide gas dissolved in the liquid, thereby greatly improving the accuracy of the detection of the hydrogen sulfide gas and reducing the detection error of the hydrogen sulfide by 20-35%; the automatic and accurate adjustment of the adding amount of the desulfurizer is realized, the content of the hydrogen sulfide gas in the treated oil well reaches below 0.5 mg/m3, the requirement of the safety production concentration of the hydrogen sulfide in the oil well is completely met, and the treatment effect is good.
According to the invention, the hydrogen sulfide is removed by adding chemicals on the ground, oil and a casing string in a shaft cannot be protected in a sulfur-containing oil gas environment, so that a strong corrosion risk exists, and source treatment cannot be realized.
2. The utility model provides a get rid of device of hydrogen sulfide in oil well associated gas, patent number (CN 201420326212.4), the utility model discloses a get rid of device of hydrogen sulfide in oil well associated gas, the device includes: the device comprises a closed box body for containing working liquid, an air inlet pipeline for introducing oil well associated gas into the closed box body to react with the working liquid to remove hydrogen sulfide, and an air outlet pipeline for leading the associated gas from which the hydrogen sulfide is removed out of the closed box body; the box body is provided with a space for containing working fluid, an air inlet pipeline connector and an air outlet pipeline connector, the upper part of the box body is provided with a drug feeding port, and the lower part of the box body is provided with a liquid outlet; the air inlet pipeline extends into the box body through an air inlet pipeline interface on the box body and extends to the bottom of the box body to be horizontally arranged, and an air outlet hole is formed in the air inlet pipeline horizontally arranged at the bottom of the box body; the air inlet end of the air outlet pipeline extends into the box body through an air outlet pipeline interface on the box body and is positioned at the upper part of the working liquid level. Through the utility model discloses a poisonous gas hydrogen sulfide in the oil well associated gas can be got rid of to the device, the extravagant and polluted environment's of natural gas problem still can be solved.
The invention also removes hydrogen sulfide on the ground, and can not effectively protect oil and casing strings in a well bore.
3. The utility model provides a single-port oil well except hydrogen sulfide process units, patent number (CN 201720457666.9), which comprises an oil pipe and a sleeve pipe which are positioned in the oil well, and a Christmas tree, a medicine feeding unit, a pipeline mixing unit and a crude oil storage tank which are positioned outside the oil well; the oil pipe is connected with an oil pipe head of the Christmas tree, and the sleeve is connected with a sleeve head of the Christmas tree; the drug feeding unit is connected with a left wing inlet of the Christmas tree, and a sulfide remover is filled in the drug feeding unit; the pipeline mixing unit is connected with a right wing produced liquid outlet of the Christmas tree; the crude oil storage tank is connected with the outlet of the pipeline mixing unit; a pressure gauge is arranged at the outlet end of the produced liquid of the right wing of the Christmas tree and used for monitoring the accumulation condition of silt in the oil production pipeline; and a wellhead sampling detection unit is arranged on an outlet pipeline of the pipeline mixing unit and is used for monitoring the residual amount of hydrogen sulfide in the crude oil subjected to desulphurization treatment. The utility model discloses the hydrogen sulfide that produces in the oil reservoir can be got rid of to process units more efficient, avoids on-the-spot potential safety hazard for the content of hydrogen sulfide is up to standard in the oil well wellhead produced liquid.
The invention also removes hydrogen sulfide on the ground, and can not effectively protect oil and casing strings in a shaft although the desulfurization efficiency is higher and the safety is stronger.
Disclosure of Invention
The utility model aims at providing a contain sulphur oil well chemical agent injection system can inject the desulfurization medicament through hydraulic control pipeline and oil pipe tubular column to the well liquid that produces in the sulphur oil gas layer, from containing the sulphur oil layer to the in-process that ground lifted at well liquid in the oil pipe tubular column with hydrogen sulfide wherein take place to react, the protection contains the production facility in the pit in the sulphur oil well, maintains the normal operating of production.
In order to realize the purpose of the invention, the utility model adopts the technical scheme that:
a chemical agent injection system for a sulfur-containing oil well comprises an agent container, a dosing pump and a hydraulic control pipeline, wherein the agent container is sequentially connected with the dosing pump, an agent conveying check valve, a sleeve valve and an underground injection device through the hydraulic control pipeline;
the injection device is connected in an oil pipe column above the packer, and the packer is positioned above the sulfur-containing oil-gas layer;
the injection device mainly comprises an outer shell, an injection agent conveying check valve and an agent injection pipe, wherein the injection agent conveying check valve is connected to the agent injection pipe, and a hydraulic control pipeline penetrates into the outer shell and is connected with the injection agent conveying check valve.
The tail end of the hydraulic control pipeline penetrates into the outer shell from a hydraulic control pipeline sealing sleeve, a shaping sealing piece and a pressing ring in the injection device and is connected with the injection medicament conveying check valve through a connecting pipe, the hydraulic control pipeline sealing sleeve is in threaded connection with the outer shell, the shaping sealing piece is installed at the lower end of the hydraulic control pipeline sealing sleeve, the pressing ring is in threaded connection with the lower end of the shaping sealing piece, one end of the connecting pipe is connected with the tail end of the hydraulic control pipeline, and the other end of the connecting pipe is connected with an inlet of the injection medicament conveying check valve.
The injection medicament conveying check valve is provided with a valve body, a valve seat and a valve ball, the valve body is connected in the medicament injection pipe, the valve ball is installed in the valve seat, the valve ball and the valve seat are arranged outside the medicament injection pipe, and the valve seat is installed at one end of a hydraulic control pipeline.
The upper end of the body of the medicament injection pipe is provided with threads connected with the upper joint, the lower end of the body is provided with connecting threads, the two ends of the outer shell are welded outside the medicament injection pipe, and the injection device is connected in the oil pipe string through the upper joint and the connecting threads.
And a well washing valve is also connected in the oil pipe column between the packer and the injection device.
The tubing string can be a self-injection production string.
The tubing string can be a pumping production string, and an oil well pump in the pumping production string is located in the tubing string above the injection device.
The hydraulic control pipeline is fixed outside the oil pipe column through the protection clamp, the outer diameter of the hydraulic control pipeline is 5-15mm, and the wall thickness of the hydraulic control pipeline is 1-3 mm.
And a valve seat of the medicament delivery check valve is arranged on one side of the dosing pump.
The sleeve valve positioned on one side of the medicament conveying check valve is also internally provided with a gate valve crossing sealer, the gate valve crossing sealer is a cylindrical body, one end of the gate valve crossing sealer is connected with the sleeve valve through a hoop, a sealing element is arranged in the cylindrical body, and a hydraulic control pipeline passes through the sealing element of the gate valve crossing sealer and enters the sleeve valve.
Compared with the prior art, the beneficial effects of the utility model are that: the oil pipe column connected with the injection device can realize continuous production after one-time running, and if the self-spraying can adopt the production of the optical oil pipe, namely the self-spraying production pipe column; if not, the oil pump can be put down to lift production, namely, the production pipe column is pumped, the construction is convenient and fast, and the production safety is higher. After the packer in the oil pipe column seals the oil sleeve annulus, the sulfur-containing oil gas can be prevented from entering the casing, the corrosion and sulfur brittleness influence of hydrogen sulfide on the inner wall of the casing and the outer wall of the oil pipe can be substantially prevented, and the packer has a better protection effect on an oil well completed by a non-sulfur-resistant casing. Chemical agents are directly injected into the oil pipe column through the agent adding container and the hydraulic control pipeline to be mixed and reacted with sulfur-containing oil gas, the agent adding efficiency is high, and the reaction speed is high. And the dosage and the concentration of the medicament can be flexibly adjusted according to the content of the hydrogen sulfide in the wellhead sampling, and the medicament can react with the hydrogen sulfide in the wellhead liquid lifting process, so that the concentration of the wellhead hydrogen sulfide is effectively reduced and reaches the safety standard, the sulfur removal effect is stable, and the source treatment of the hydrogen sulfide in the sulfur-containing oil and gas well is realized.
To sum up, the utility model discloses have apparent result of use and can produce apparent economic benefits and social.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of the structure and the working principle of the present invention.
Fig. 2 is a schematic view of the construction of the injection device of fig. 1.
In the figure: the device comprises a medicament container 1, a dosing pump 2, a medicament conveying check valve 3, a gate valve crossing sealer 4, a casing valve 5, a hydraulic control pipeline 6, a protection clamp 7, an injection device 8, an oil pipe column 9, an oil pipe valve 10, an oil well pump 11, a casing 12, a well washing valve 13, a packer 14, an upper connector 81, a hydraulic control pipeline sealing sleeve 82, an outer shell 83, a shaping sealing member 84, a pressing ring 85, an injection medicament conveying check valve 86, a medicament injection pipe 87 and connecting threads 88.
Detailed Description
The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present disclosure. The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 and 2, a chemical agent injection system for a sulfur-containing oil well comprises an agent container 1, a dosing pump 2 and a hydraulic control pipeline 6, wherein the agent container 1 is connected with the dosing pump 2, an agent delivery check valve 3, a casing valve 5 and a downhole injection device 8 in sequence through the hydraulic control pipeline 6, wherein:
the injection device 8 is connected in the tubing string 9 above the packer 14, the packer 14 is above the sour hydrocarbon zone;
the injection device 8 mainly comprises an outer shell 83, an injection medicament delivery check valve 86 and a medicament injection pipe 87, wherein the injection medicament delivery check valve 86 is connected in the medicament injection pipe 87, and a hydraulic control pipeline 6 penetrates from the outer shell 83 to be connected with the injection medicament delivery check valve 86. Chemical agents can be directly injected into the oil pipe column 9 through the injection device 8, and sulfur is directly removed underground, so that the damage and damage of hydrogen sulfide to production equipment are eliminated from the source. Meanwhile, the bottom of the oil pipe column 9 seals the oil sleeve annulus through the packer 14, so that sulfur-containing oil gas cannot enter the oil sleeve annulus. Before the packer 14 is set, the empty space of the oil sleeve is filled with protective liquid, and even a small amount of hydrogen sulfide enters the empty space, the empty space cannot cause corrosion damage. The packer 14 can be of the type Y441, the type Y445, the type Y221 and the like, can be flexibly selected and used according to different types of the oil pipe column 9, and the packer 14 is made of conventional materials or sulfur-resistant materials, can resist temperature of more than 120 ℃ and has pressure-resistant difference of more than 52 MPa.
On the basis of the first embodiment, the utility model discloses still have following embodiment:
the tail end of the hydraulic control pipeline 6 penetrates into the outer shell 83 from a hydraulic control pipeline sealing sleeve 82, a shaping sealing member 84 and a pressing ring 85 in the injection device 8 and is connected with an injection medicament conveying check valve 86 through a connecting pipe, the hydraulic control pipeline sealing sleeve 82 is in threaded connection with the outer shell 83, the shaping sealing member 84 is installed at the lower end of the hydraulic control pipeline sealing sleeve 82, the pressing ring 85 is in threaded connection with the lower end of the shaping sealing member 84, one end of the connecting pipe is connected with the tail end of the hydraulic control pipeline 6, and the other end of the connecting pipe is connected with an inlet of the injection medicament conveying check valve 86.
The injection medicament delivery check valve 86 is provided with a valve body, a valve seat and a valve ball, the valve body is connected in the medicament injection pipe 87, the valve ball is installed in the valve seat, the valve ball and the valve seat are arranged outside the medicament injection pipe 87, and the valve seat is installed at one end of the hydraulic control pipeline 6, so that liquid in the oil pipe string 9 can be prevented from flowing back.
The upper end of the body of the medicament injection pipe 87 is provided with threads to be connected with the upper joint 1, the lower end of the body is provided with connecting threads 88, the two ends of the outer shell 83 are welded outside the medicament injection pipe 87, and the injection device 8 is connected in the oil pipe column 9 through the upper joint 81 and the connecting threads 88. Because the valve ball and the valve seat in the injection medicament delivery check valve 86 are arranged outside the medicament injection pipe 87, the inner through path of the oil pipe string 9 is ensured to be unobstructed.
And a well washing valve 13 is also connected in the oil pipe column 9 between the packer 14 and the injection device 8, and the well washing valve 13 is arranged at the upper part of the packer 14, so that well washing or killing operation before next construction is facilitated.
Oil pipe string 9 can be the blowout production tubular column, if use the utility model discloses an oil gas well can the blowout, can not go into oil-well pump 11 down.
The tubing string 9 can be a pumping production string in which an oil pump 11 is located in the tubing string 9 above the injection device 8. If use the utility model discloses an oil gas well can not the flowing by oneself, then goes into oil-well pump 11.
The hydraulic control pipeline 6 is fixed outside the oil pipe column 9 through the protection clamp 7, the outer diameter of the hydraulic control pipeline 6 is 5-15mm, the wall thickness is 1-3mm, the hydraulic control pipeline can be made of 316L and other stainless steel materials, the temperature resistance is higher than 120 ℃, the pressure resistance is higher than 35MPa, and the setting depth can be higher than 2000 m.
The valve seat of the medicament delivery check valve 3 is arranged on one side of the dosing pump 2, and can prevent the liquid medicament in the hydraulic control pipeline 6 from flowing back.
The sleeve valve 5 positioned on one side of the medicament conveying check valve 3 is also internally provided with a gate valve crossing sealer 4, the gate valve crossing sealer 4 is a cylindrical body, one end of the gate valve crossing sealer 4 is connected with the sleeve valve 5 through a hoop, a sealing element is arranged in the cylindrical body, and a hydraulic control pipeline 6 passes through the sealing element of the gate valve crossing sealer 4 and enters the sleeve valve 5.
Application the utility model discloses afterwards, add the chemical agent of medicine pump 2 in with medicament container 1 and inject into the inner chamber of oil pipe tubular column 9 through medicament delivery check valve 3, hydraulic control pipeline 6, injection device 8 in, with the desorption hydrogen sulfide that contains the mixed reaction of sulphur oil gas that gets into in the oil pipe tubular column 9. The hydraulic control pipeline 6 is tightly fixed on the outer wall of the oil pipe string 9 through a protection clamp 7 and is put into the sleeve 12 together with the oil pipe string 9. Meanwhile, the bottom of the oil pipe column 9 seals the oil sleeve annulus through the packer 14, so that oil gas cannot enter the oil sleeve annulus, the oil sleeve annulus is filled with protection liquid before setting, and the upper part of the packer 14 is provided with the well flushing valve 13, so that well flushing or killing operation before next construction is facilitated.
Oil gas collected from a sulfur-containing oil-gas layer is subjected to hydrogen sulfide removal at the bottom of the oil pipe string 9, enters the oil pipe string 9 in a self-spraying or pumping mode, and then enters an output pipeline through an oil pipe valve 10 on the ground.
The utility model discloses a directly pour into chemical agent into contain among the oil pipe tubular column 9 of sour oil gas well, improved reaction efficiency, the medicament quantity can be according to the nimble control of hydrogen sulfide content in the well head oil appearance, has saved the medicament quantity of use. The packer 14 seals the oil casing annulus, effectively improves the protection effect on the oil pipe column 9 and the casing pipe 12, also effectively improves the protection on the sulfur-containing oil-gas downhole equipment, really treats the produced liquid containing hydrogen sulfide from the source, has obvious use effect and can produce obvious economic benefit.
The embodiments described above are merely exemplary embodiments, but the present invention is not limited to these embodiments, and those skilled in the art can make modifications without departing from the spirit and teaching of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and modifications can be made, and equivalents can be substituted for elements thereof. Any modification, equivalent replacement, improvement and the like made within the spirit and the concept of the present invention should be included in the protection scope of the present invention. The scope of protection is therefore not limited to the description above.
Claims (10)
1. A chemical agent injection system for a sulfur-containing oil well comprises an agent container, a dosing pump and a hydraulic control pipeline, and is characterized in that the agent container is connected with the dosing pump, an agent conveying check valve, a sleeve valve and an underground injection device in sequence through the hydraulic control pipeline;
the injection device is connected in an oil pipe column above the packer, and the packer is positioned above the sulfur-containing oil-gas layer;
the injection device mainly comprises an outer shell, an injection agent conveying check valve and an agent injection pipe, wherein the injection agent conveying check valve is connected to the agent injection pipe, and a hydraulic control pipeline penetrates into the outer shell and is connected with the injection agent conveying check valve.
2. The system of claim 1, wherein the end of the hydraulic control line penetrates into the outer casing from a hydraulic control line sealing sleeve, a shaping sealing member and a pressure ring in the injection device and is connected with the injection agent delivery check valve through a connecting pipe, the hydraulic control line sealing sleeve is in threaded connection with the outer casing, the shaping sealing member is installed at the lower end of the hydraulic control line sealing sleeve, the pressure ring is in threaded connection with the lower end of the shaping sealing member, one end of the connecting pipe is connected with the end of the hydraulic control line, and the other end of the connecting pipe is connected with an inlet of the injection agent delivery check valve.
3. The system of claim 2, wherein the injection agent delivery check valve comprises a valve body, a valve seat and a valve ball, the valve body is connected to the agent injection pipe, the valve ball is installed in the valve seat, the valve ball and the valve seat are arranged outside the agent injection pipe, and the valve seat is installed at one end of the hydraulic control pipeline.
4. A sulfur-containing oil well chemical agent injection system as defined in claim 3, wherein said chemical agent injection pipe is provided with a body having an upper end threaded to the upper joint and a lower end provided with a connecting thread, both ends of the outer casing are welded to the outside of the chemical agent injection pipe, and the injection device is connected to the tubing string through the upper joint and the connecting thread.
5. A sulfur-containing oil well chemical injection system as defined in claim 1, wherein a flushing valve is further connected in the tubing string between said packer and said injection device.
6. The system for injecting a chemical into a sulfur-containing oil well as defined in claim 1, 4 or 5, wherein said tubing string is a self-injection production string.
7. The system of claim 1, 4 or 5 wherein the tubing string is a pumping production string, and wherein the pump is located in the tubing string above the injector.
8. The system of claim 1, wherein the pilot line is fixed to the outside of the tubing string by a protector, and the pilot line has an outer diameter of 5-15mm and a wall thickness of 1-3 mm.
9. The system of claim 1, wherein the valve seat of the chemical delivery check valve is mounted on one side of the dosing pump.
10. A sulfur-containing well chemical injection system as claimed in claim 1 wherein said casing valve on the side of said chemical delivery check valve further comprises a gate valve cross-over sealer, said gate valve cross-over sealer being a cartridge having one end connected to said casing valve by a collar, said cartridge having a seal mounted therein, said hydraulic line passing from said gate valve cross-over sealer seal into said casing valve.
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| CN202022234827.2U CN213743355U (en) | 2020-10-10 | 2020-10-10 | Sulfur-containing oil well chemical agent injection system |
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| CN202022234827.2U CN213743355U (en) | 2020-10-10 | 2020-10-10 | Sulfur-containing oil well chemical agent injection system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458245A (en) * | 2021-12-22 | 2022-05-10 | 中海油能源发展股份有限公司 | Offshore oil gas well solid medicament adds device is prevented blockking up in adaptation |
| CN115012878A (en) * | 2022-06-30 | 2022-09-06 | 西南石油大学 | Double-layer pipe-based inhibitor filling system for sulfur-containing gas well without production stop |
| CN117072414A (en) * | 2023-10-12 | 2023-11-17 | 新疆坤隆石油装备有限公司 | Special oil pump capable of automatically and quantitatively adding wax-proof and scale-proof inhibitor |
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2020
- 2020-10-10 CN CN202022234827.2U patent/CN213743355U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458245A (en) * | 2021-12-22 | 2022-05-10 | 中海油能源发展股份有限公司 | Offshore oil gas well solid medicament adds device is prevented blockking up in adaptation |
| CN114458245B (en) * | 2021-12-22 | 2024-01-02 | 中海油能源发展股份有限公司 | Adaptation anti-blocking offshore oil and gas well solid medicament adding device |
| CN115012878A (en) * | 2022-06-30 | 2022-09-06 | 西南石油大学 | Double-layer pipe-based inhibitor filling system for sulfur-containing gas well without production stop |
| CN117072414A (en) * | 2023-10-12 | 2023-11-17 | 新疆坤隆石油装备有限公司 | Special oil pump capable of automatically and quantitatively adding wax-proof and scale-proof inhibitor |
| CN117072414B (en) * | 2023-10-12 | 2024-02-13 | 新疆坤隆石油装备有限公司 | Special oil pump capable of automatically and quantitatively adding wax-proof and scale-proof inhibitor |
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