CN111734354A - Water source well cable laying nonmetal coiled tubing water production pipe column and water production method - Google Patents
Water source well cable laying nonmetal coiled tubing water production pipe column and water production method Download PDFInfo
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- CN111734354A CN111734354A CN202010586894.2A CN202010586894A CN111734354A CN 111734354 A CN111734354 A CN 111734354A CN 202010586894 A CN202010586894 A CN 202010586894A CN 111734354 A CN111734354 A CN 111734354A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 229910052755 nonmetal Inorganic materials 0.000 title claims abstract description 67
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 238000012806 monitoring device Methods 0.000 claims abstract description 34
- 210000002445 nipple Anatomy 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 13
- 238000012856 packing Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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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)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention provides a water source well cable laying nonmetal continuous oil pipe water production pipe column and a water production method, wherein the pipe column comprises a standard well mouth, a ground control system arranged outside the standard well mouth, a cable laying nonmetal continuous oil pipe arranged at the lower end of the standard well mouth, a liquid level monitoring device, an electric submersible pump and a motor, wherein the cable laying nonmetal continuous oil pipe is connected with the standard well mouth through an oil pipe nipple, the ground control system is electrically connected with the upper end of the cable laying nonmetal continuous oil pipe, and the lower end of the cable laying nonmetal continuous oil pipe is sequentially connected with the liquid level monitoring device, the electric submersible pump and the motor; the liquid level monitoring device, the electric submersible pump and the motor are respectively and electrically connected with a ground control system. The invention adopts the advantages of effective corrosion resistance, wear resistance, few joints, small friction resistance, high construction speed and long service life of the cable-laying nonmetal continuous oil pipe, can avoid the friction between the cable and the well wall, fundamentally solves the problem of cable abrasion, reduces the accident rate of a water source well and prolongs the service life of the submersible pump.
Description
Technical Field
The invention belongs to the technical field of water production of oil field water source wells, and particularly relates to a water source well cable laying nonmetal continuous oil pipe water production pipe column and a water production method.
Background
At present, a water source well of a Changqing oil field adopts a large-drift-diameter steel oil pipe to produce water, and is influenced by minerals in water, so that a metal pipe body is rusted and corroded seriously after long-term production; meanwhile, in the existing water production process, a cable is fixed on the outer wall of a steel pipe and is put into a well together, the lower end of the cable is connected with an underground submersible pump, a motor and the like, and the cable is easily abraded by friction with a well wall in the process of putting into the well and taking out of the well, so that the cable is burnt, the motor of the electric submersible pump is short-circuited or the motor is burnt. The damage of the submersible pump caused by the damage of the cable and the well repair cost become important capital investment in the use of the water source well, and the proportion of the underground fault of the water source well caused by the fault is more than 50%. Therefore, a fast and safe water recovery process of the water source well needs to be researched.
Disclosure of Invention
The invention aims to solve the problem that the existing cable is easy to damage and causes poor whole water production effect, and provides a water source well cable laying nonmetal coiled tubing water production pipe column and a water production method. Meanwhile, the cable laid in the pipe body can provide power for equipment such as the underground submersible pump and the like, underground data is collected to be transmitted and monitored in real time, the probability that the equipment such as the submersible pump and the like are burnt due to cable damage is effectively reduced, and operations such as well repair are avoided.
The technical scheme adopted by the invention is as follows:
a water source well cable laying nonmetal continuous oil pipe water production pipe column comprises a standard well mouth, and further comprises a ground control system arranged outside the standard well mouth, a cable laying nonmetal continuous oil pipe arranged at the lower end of the standard well mouth, a liquid level monitoring device, an electric submersible pump and a motor, wherein the cable laying nonmetal continuous oil pipe is connected with the standard well mouth through an oil pipe nipple; the liquid level monitoring device, the electric submersible pump and the motor are respectively and electrically connected with a ground control system.
The oil pipe short section is connected with the cabled nonmetal continuous oil pipe through a conversion joint.
And a cable joint is reserved at the upper end of the cable laying nonmetal continuous oil pipe and is electrically connected with a ground control system.
The lower end of the cabled nonmetal continuous oil pipe is connected with a liquid level monitoring device through a conversion joint.
The cabled nonmetal coiled tubing is a coiled tubing which is used for sheathing the cable in a tube body.
And a check valve is arranged at the lower end of the liquid level monitoring device.
The liquid level monitoring device is an underground acquisition sensor.
A water source well cable laying nonmetal continuous oil pipe water production method comprises the following specific steps: connecting a water source well cable laying nonmetal continuous oil pipe water production pipe column, and then putting the pipe column into a shaft, wherein the underground pipe column is partially submerged below the liquid level; after the pipe column is in place, a standard well mouth is installed, a cable is connected to a ground control system, the data recorded by the underground water source well liquid level monitoring device is collected through the cable laying nonmetal continuous oil pipe, the current and voltage working parameters of the submersible pump and the motor are monitored in real time, the water yield of the water source well is recorded, and meanwhile, the water source well is started and stopped on site.
The motor is positioned above the bottom of the well by a distance of more than one meter when the underground pipe column is partially submerged below the liquid level, and the submersible pump is submerged at least 1 meter below the dynamic water level.
The ground control system adopts soft start and soft stop to the motor, and judges the liquid level in the shaft through the signals collected by the underground liquid level monitoring device, so that the automatic start and stop of the electric submersible pump are realized, and the low liquid level stops and the high liquid level starts.
The invention has the beneficial effects that:
the invention not only can effectively meet the water production work of the water source well, but also has the advantages of effective corrosion resistance, wear resistance, less joints, small friction resistance, high construction speed and long service life by adopting the cabled nonmetal continuous oil pipe, can avoid the friction between the cable and the well wall, fundamentally solves the problem of cable abrasion, reduces the accident rate of the water source well and prolongs the service life of the submersible pump.
The following will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a physical schematic view of a cabled non-metallic coiled tubing.
Wherein: 1. a standard wellhead; 2. an oil pipe nipple; 3. a crossover sub; 4. laying a cable nonmetal coiled tubing; 401. a core tube; 402. an enhancement layer; 403. a filling layer; 404. a tensile layer; 405. an outer protective layer; 5. a liquid level monitoring device; 6. a check valve; 7. an electric submersible pump; 8. a motor; 9. a ground control system.
Detailed Description
Example 1:
the invention provides a water source well cable laying nonmetal continuous oil pipe water production pipe column and a water production method as shown in figures 1 and 2, and aims to solve the problem that the whole water production effect is poor due to the fact that an existing cable is easy to break. Meanwhile, the cable laid in the pipe body can provide power for equipment such as the underground submersible pump and the like, underground data is collected to be transmitted and monitored in real time, the probability that the equipment such as the submersible pump and the like are burnt due to cable damage is effectively reduced, and operations such as well repair are avoided.
A water source well cable laying nonmetal coiled tubing water production pipe column comprises a standard well head 1, and further comprises a ground control system 9 arranged outside the standard well head 1, a cable laying nonmetal coiled tubing 4 arranged at the lower end of the standard well head 1, a liquid level monitoring device 5, an electric submersible pump 7 and a motor 8, wherein the cable laying nonmetal coiled tubing 4 is connected with the standard well head 1 through a tubing nipple 2, the ground control system 9 is electrically connected with the upper end of the cable laying nonmetal coiled tubing 4, and the lower end of the cable laying nonmetal coiled tubing 4 is sequentially connected with the liquid level monitoring device 5, the electric submersible pump 7 and the motor 8; the liquid level monitoring device 5, the electric submersible pump 7 and the motor 8 are respectively and electrically connected with a ground control system 9.
The specific working process of the invention is as follows:
as shown in figure 1, the water source well cable laying nonmetal coiled tubing water production pipe column provided by the invention is connected and is put into a shaft, and the part of a downhole tool is submerged below the liquid level. The distance between the motor 8 and the bottom of the well is ensured to be more than 3 meters, the motor 8 is prevented from sinking below a static water level by within 70 meters, the submersible pump 7 sinks below a dynamic water level by more than 1 meter, the motor 8 is prevented from being burnt out in the water collection process, and the submersible pump 7 can convey enough water collection quantity. After the pipe column is ensured to be in place, a well mouth is installed, a cable is connected to a ground control system 9, the data recorded by the underground water source well liquid level monitoring device 5 is collected through the cable laying nonmetal continuous oil pipe, the working parameters such as the current and the voltage of the submersible pump 7 and the motor 8 are monitored in real time, and the water yield of the water source well is recorded. Meanwhile, the on-site starting and stopping of the water source well are realized. In order to prevent water in the ground and upper shaft from flowing back to the ground when a fault exists, a check valve 6 is arranged at the lower part of the liquid level monitoring device 5, so that the submersible pump 7 is prevented from reversing due to the backflow of the shaft, and the motor 8 is prevented from being burnt out.
The standard wellhead 1 of the water source well comprises a hanger body, a sealing washer, a cable leading-out hole, a packing pressing cap, a corresponding packing, a logging interface, a flow interface and a downhole pipe column interface. The hanger body is used for bearing the load of the underground pipe string; the sealing gasket is used for realizing sealing between the hanger and the sleeve; the cable leading-out hole, the packing pressing cap and the corresponding packing are used for realizing the holding and sealing of the underground leading-out cable and the hanger; the logging interface is used for connecting a logging instrument; the flow interface is used for connecting a ground flow; the downhole string interface is used for connecting a downhole water lifting string.
The invention not only can effectively meet the water production work of the water source well, but also has the advantages of effective corrosion resistance, wear resistance, few joints, small friction resistance, high construction speed and long service life by adopting the cabled nonmetal continuous oil pipe 4, can avoid the friction between the cable and the well wall, fundamentally solves the problem of cable abrasion, reduces the accident rate of the water source well and prolongs the service life of the submersible pump.
Example 2:
based on embodiment 1, in this embodiment, preferably, the tubing nipple 2 and the cabled non-metal coiled tubing 4 are connected by a crossover sub 3.
Preferably, a cable joint is reserved at the upper end of the cable laying nonmetal continuous oil pipe 4 and is electrically connected with a ground control system 9.
Preferably, the lower end of the cabled nonmetal continuous oil pipe 4 is connected with a liquid level monitoring device 5 through a conversion joint 3.
Preferably, the cabled nonmetal coiled tubing 4 is coiled tubing for sheathing the cable in the tube body.
As shown in FIG. 2, the cabled nonmetal continuous oil pipe 4 comprises a pipe core 401, and a reinforcing layer 402, a tensile layer 404 and an outer protective layer 405 which are sequentially sleeved outside the pipe core 401. The cable is sheathed between a reinforced layer 402 and a tensile layer 404, and a filling layer 403 is arranged around the cable. The pipe core 401 is made of polyethylene, PA or PVDF materials, and the reinforcing layer 402, the filling layer 403 and the tensile layer 404 are made of aramid fibers, carbon fibers or glass fiber high-performance fibers and bear various mechanical properties of the continuous pipe cable. The outer protective layer 405 is made of a high polymer material, and has the advantages of corrosion resistance, wear resistance, external leakage resistance and pipe protection. In the present invention, the outer protective layer 405 is 3.3mm thick, the reinforcement layer 402 is 7.2mm thick, and the liner layer, i.e., the die 401, is 7mm thick.
Preferably, the lower end of the liquid level monitoring device 5 is provided with a check valve 6.
Preferably, the liquid level monitoring device 5 is a downhole acquisition sensor.
The liquid level monitoring device 5 of the invention adopts the radio frequency admittance principle to collect the liquid level information in the pit, and the liquid level monitoring device 5 is a downhole collection sensor and can adopt the Simestan Instrument corporation of Japan (SYK-100).
The cable-laying nonmetal continuous oil pipe adopted by the invention has the advantages of effective corrosion resistance, wear resistance, few joints, small friction resistance, high construction speed and long service life.
The invention armours the cable in the oil pipe, which can avoid the friction between the cable and the well wall, fundamentally solve the problem of cable abrasion, reduce the accident rate of the water source well and prolong the service life of the submersible pump.
Example 3:
based on embodiment 1 or 2, this embodiment provides a water source well cable laying nonmetal coiled tubing water production method, which includes the following steps: connecting a water source well cable laying nonmetal continuous oil pipe water production pipe column, and then putting the pipe column into a shaft, wherein the underground pipe column is partially submerged below the liquid level; after the pipe column is put in place, a standard well mouth 1 is installed, a cable is connected to a ground control system 9, data recorded by a liquid level monitoring device 5 of the underground water source well are collected through a cable laying nonmetal continuous oil pipe 4, current and voltage working parameters of a submersible pump 7 and a motor 8 are monitored in real time, the water yield of the water source well is recorded, and meanwhile, the water source well is started and stopped on site.
The motor 8 is positioned above 3 meters away from the bottom of the well when the underground pipe column is partially submerged below the liquid level, and the submersible pump 7 is submerged at least 1 meter below the dynamic water level.
The ground control system 9 adopts soft start and soft stop to the motor 8, and the ground control system 9 judges the liquid level in the shaft through signals collected by the underground liquid level monitoring device 5, so that the automatic start and stop of the electric submersible pump 7 are realized, and the low liquid level stops and the high liquid level starts.
The underground part consists of a cabled nonmetal continuous oil pipe 4, a liquid level monitoring device 5, a check valve 6, a submersible 7 pump and a motor 8 from top to bottom. The cable laying nonmetal continuous oil pipe 4 is a continuous pipe for sheathing the cable in a pipe body, and can effectively protect the cable. The upper end of the cable laying nonmetal continuous oil pipe 4 is connected with a standard wellhead 1 by adopting a conversion joint 3, and the lower end of the cable laying nonmetal continuous oil pipe is connected with a liquid level monitoring device 5 by adopting the conversion joint 3. The liquid level monitoring device 5, the check valve 6, the submersible pump 7 and the motor 8 are all in threaded connection.
Because the water source well has the characteristics of low pressure, low temperature, shallow well and the like, the mechanical property requirement of the pipe column is lower than that of an oil-water well, the cabled nonmetal continuous oil pipe 4 is used for the water source well, the problems of overhaul and scrapping of the water source well caused by the falling of a cable can be solved, and meanwhile, the cabled nonmetal continuous oil pipe 4 is a nonmetal pipe, has good corrosion resistance and flexibility and has important significance for prolonging the well repair period of the water source well.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention. The device structure and method steps not described in detail in this embodiment are well known in the art and commonly used in the art, and will not be described here.
Claims (10)
1. The utility model provides a nonmetal coiled tubing water production tubular column of source well laying cable, includes standard wellhead (1) its characterized in that: the system is characterized by further comprising a ground control system (9) arranged outside the standard wellhead (1), a cable laying nonmetal continuous oil pipe (4) arranged at the lower end of the standard wellhead (1), a liquid level monitoring device (5), an electric submersible pump (7) and a motor (8), wherein the cable laying nonmetal continuous oil pipe (4) is connected with the standard wellhead (1) through an oil pipe nipple (2), the ground control system (9) is electrically connected with the upper end of the cable laying nonmetal continuous oil pipe (4), and the lower end of the cable laying nonmetal continuous oil pipe (4) is sequentially connected with the liquid level monitoring device (5), the electric submersible pump (7) and the motor (8); the liquid level monitoring device (5), the electric submersible pump (7) and the motor (8) are electrically connected with a ground control system (9) respectively.
2. The source well cable laying nonmetal coiled tubing water production string of claim 1, characterized in that: the oil pipe short section (2) is connected with the cabled nonmetal continuous oil pipe (4) through a conversion joint (3).
3. The source well cable laying nonmetal coiled tubing water production string of claim 1, characterized in that: and a cable joint is reserved at the upper end of the cabled nonmetal continuous oil pipe (4), and the cable joint is electrically connected with a ground control system (9).
4. The source well cable laying nonmetal coiled tubing water production string of claim 1, characterized in that: the lower end of the cabled nonmetal continuous oil pipe (4) is connected with a liquid level monitoring device (5) through a conversion joint (3).
5. The source well cable laying nonmetal coiled tubing water production string of claim 1, characterized in that: the cabled nonmetal coiled tubing (4) is a coiled tubing which is used for sheathing the cable in a tube body.
6. The source well cable laying nonmetal coiled tubing water production string of claim 1, characterized in that: and a check valve (6) is arranged at the lower end of the liquid level monitoring device (5).
7. The source well cable laying nonmetal coiled tubing water production string of claim 1, characterized in that: the liquid level monitoring device (5) is an underground acquisition sensor.
8. The method for producing water by the nonmetal coiled tubing laid by the water source well according to any one of the claims 1 to 7, characterized in that: the method comprises the following specific steps: connecting a water source well cable laying nonmetal continuous oil pipe water production pipe column, and then putting the pipe column into a shaft, wherein the underground pipe column is partially submerged below the liquid level; after the pipe column is put in place, a standard well head (1) is installed, a cable is connected to a ground control system (9), data recorded by a downhole water source well liquid level monitoring device (5) is collected through a cable laying nonmetal continuous oil pipe (4), current and voltage working parameters of a submersible pump (7) and a motor (8) are monitored in real time, the water yield of the water source well is recorded, and the water source well is started and stopped on site.
9. The method for producing water by the nonmetal coiled tubing laid by the water source well cable according to the claim 8, is characterized in that: the motor (8) is positioned above 3 meters away from the bottom of the well when the underground pipe column is partially submerged below the liquid level, and the submersible pump (7) is submerged at least 1 meter below the dynamic water level.
10. The method for producing water by the nonmetal coiled tubing laid by the water source well cable according to the claim 8, is characterized in that: the ground control system (9) adopts soft start and soft stop to the motor (8), the ground control system (9) judges the liquid level in the shaft through signals collected by the underground liquid level monitoring device (5), the automatic start and stop of the electric submersible pump (7) are realized, and the low liquid level stops and the high liquid level starts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010586894.2A CN111734354A (en) | 2020-06-24 | 2020-06-24 | Water source well cable laying nonmetal coiled tubing water production pipe column and water production method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010586894.2A CN111734354A (en) | 2020-06-24 | 2020-06-24 | Water source well cable laying nonmetal coiled tubing water production pipe column and water production method |
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| CN111734354A true CN111734354A (en) | 2020-10-02 |
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| CN202010586894.2A Pending CN111734354A (en) | 2020-06-24 | 2020-06-24 | Water source well cable laying nonmetal coiled tubing water production pipe column and water production method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130277042A1 (en) * | 2012-04-18 | 2013-10-24 | Schlumberger Technology Corporation | Deep Deployment System for Electric Submersible Pumps |
| CN104818964A (en) * | 2015-04-16 | 2015-08-05 | 威海鸿通管材股份有限公司 | Rodless oil production system with continuous nonmetal cable laying tube |
| CN107355187A (en) * | 2017-09-07 | 2017-11-17 | 浙江恒安泰石油工程有限责任公司 | Flexible compound coiled tubing and its manufacturing process are used under a kind of smart well |
| CN207795176U (en) * | 2017-12-30 | 2018-08-31 | 中国石油天然气股份有限公司 | A kind of continuous pipe electric submersible screw pump oil prodn. installation of cabling |
| CN110500070A (en) * | 2019-08-23 | 2019-11-26 | 中国石油天然气股份有限公司 | A kind of continuous pipe water sampling device of preset cable flexible compound and method |
-
2020
- 2020-06-24 CN CN202010586894.2A patent/CN111734354A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130277042A1 (en) * | 2012-04-18 | 2013-10-24 | Schlumberger Technology Corporation | Deep Deployment System for Electric Submersible Pumps |
| CN104818964A (en) * | 2015-04-16 | 2015-08-05 | 威海鸿通管材股份有限公司 | Rodless oil production system with continuous nonmetal cable laying tube |
| CN107355187A (en) * | 2017-09-07 | 2017-11-17 | 浙江恒安泰石油工程有限责任公司 | Flexible compound coiled tubing and its manufacturing process are used under a kind of smart well |
| CN207795176U (en) * | 2017-12-30 | 2018-08-31 | 中国石油天然气股份有限公司 | A kind of continuous pipe electric submersible screw pump oil prodn. installation of cabling |
| CN110500070A (en) * | 2019-08-23 | 2019-11-26 | 中国石油天然气股份有限公司 | A kind of continuous pipe water sampling device of preset cable flexible compound and method |
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Application publication date: 20201002 |
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