Oil extraction screw pump suitable for extreme weather

Abstract

The invention discloses an oil extraction screw pump suitable for extreme weather, and belongs to the technical field of oil extraction engineering. The protection valve can prevent scrap iron and welding slag in the oil conveying pipe, when liquid in the screw adjusting pump or the engine oil pipe falls back, vacuum is pumped into the oil pipe, the screw pump cannot be stuck, garbage and scrap iron in the pipeline can be prevented from entering an external oil pumping pipe, the sand bearing space is additionally arranged at the bottom of the protection valve, and the valve is convenient to clean. An oil-hot water port is additionally formed in the upper portion of the oil-hot water tank, frozen crude oil can be melted through hot water after the oil-hot water tank is stopped, the elastic function of a spring can be freely and continuously used, a cable capable of heating is additionally arranged, the constant temperature is controlled, the trafficability of the crude oil is always guaranteed, valves for storing sand and discharging sand at regular time are additionally arranged, cleaning can be conducted at regular time, and a heating device is additionally arranged. The opening and closing function is recovered through boiling water unfreezing, and constant heat preservation can be achieved through a heating cable in extremely cold areas.

Description

technical field [0001] The invention relates to the technical field of oil production engineering, and more specifically relates to an oil production screw pump suitable for use in extreme weather. Background technique [0002] Oil production engineering is a general term for various engineering and technical measures taken to the reservoir through production wells and injection wells according to the development objectives in the process of oilfield production. As a comprehensive applied discipline, it studies the theory, engineering design method and implementation technology of various engineering technical measures that can be economically and effectively applied to oil reservoirs to improve oil well production and crude oil recovery. [0003] Patent No. CN201721838882.4 discloses a protection valve for natural gas fuel, including a protection valve housing and an intake pipe, the left side of the protection valve housing is fixedly connected with the intake pipe, and th...

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Problems solved by technology

[0003] Patent No. CN201721838882.4 discloses a protection valve for natural gas fuel, including a protection valve housing and an intake pipe, the left side of the protection valve housing is fixedly connected with the intake pipe, and the left side of the protection valve housing is set There is an air induction pipe, the end of the air intake pipe away from the protective valve housing is socketed with the inner wall of the air induction pipe, the surface of the air induction pipe is fixedly installed with a fixed sleeve, and the right side of the protection valve housing is fixedly connected with an air outlet pipe , the inner wall of the protection valve housing is fixedly connected with a fixed plate, the left side of the fixed plate is fixedly connected with the first small hole up and down, the right side of the fixed plate is fixedly connected with a spring tube, the fixed The right side of the plate is fixedly connected with a buffer plate, the buffer plate is located inside the spring barrel, the side of the buffer plate away from the fixed plate is fixedly connected with a first spring, and the end of the first spring away from the buffer plate is fixedly connected There is a moving plate; this patent solves the problem that the protection valve for natural gas fuel is used to prevent gas leakage, but the current protection valve for natural gas fuel is usually an electronic valve, which is not only expensive but also prone to failure, which will cause a serious threat of natural gas leakage when a failure occurs The problem of people's life safety; however, there will be a phenomenon of screw pump jamming, which cannot prevent the garbage and iron filings in the pipeline from entering the external oil extraction pipe

[0004] Patent No. CN202022418209.3 discloses a pressure protection valve for closed hydraulic breakers, including a protection valve body, which consists of a buffer valve, a check valve, an accumulator, a proportional valve, a damping hole and a process The main body of the protective valve is equipped with a buffer valve, a check valve and a proportional valve on the upper surface of the main body of the protective valve. The main body of the protective valve controls the oil replenishment amount of the accumulator through the proportional valve. There is an accumulator on the side, and the accumulator is used as a medium to introduce oil from the high-pressure side to the low-pressure side to increase the oil supply flow, and the accumulator also plays the role of buffering and storing hydraulic oil. The surface of the main body of the protection valve There are damping holes and process flow channel holes; this patent solves the problem that the high pressure of the system is overshooted in the closed system, and the low pressure (oil suction) pressure is too low for an instant, which seriously endangers the service life of the system; but it cannot Use cables in extremely cold regions with constant insulation

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