阅读说明：本技术 一种水源井敷缆非金属连续油管采水管柱及采水方法 (Water source well cable laying nonmetal coiled tubing water production pipe column and water production method ) 是由 王薇 姚斌 王守虎 王俊涛 申晓莉 何汝贤 王晓娥 于 2020-06-24 设计创作，主要内容包括：本发明提供一种水源井敷缆非金属连续油管采水管柱及采水方法,该管柱包括标准井口及设在标准井口外的地面控制系统、安装在标准井口下端的敷缆非金属连续油管、液位监测装置、电潜泵和电机,所述的敷缆非金属连续油管与标准井口通过油管短节连接,所述地面控制系统与敷缆非金属连续油管的上端电连接,所述的敷缆非金属连续油管下端依次连接有液位监测装置、电潜泵和电机；所述的液位监测装置、电潜泵和电机均分别与地面控制系统电连接。本发明采用敷缆非金属连续油管能有效抗腐蚀、耐磨、接头少、摩阻小、施工速度快、使用寿命长的诸多优点,可避免了电缆和井壁摩擦,从根本上解决了电缆磨损问题,降低了水源井事故率,提高了潜水泵使用寿命。(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.)

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.

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