Power-free pressurizing system for water injection of oilfield
An oilfield water injection and power technology, which is applied to machines/engines, liquid variable volume machinery, piston pumps, etc., to reduce the difficulty of operation, reduce management and operators, and ensure safe and reliable work.
Active Publication Date: 2015-04-08
TIANJIN BANGPU PETROLEUM TECH EQUIP
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Problems solved by technology
[0005] In order to solve the problem that the traditional oil field water injection station cannot effectively perform underground differential pressure water injection, the present invention proposes a non-power booster system for oil field water injection
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[0011] exist figure 1 Among them, this non-power boosting system for oilfield water injection includes a non-power pump, the non-power pump has a cylindrical pump body 1, the middle part of the pump body 1 is a support column 21, and the center of the support column 21 has a piston rod 22, The two ends of piston rod 22 are piston 2, and two pistons 2 divide pump body into four cavities, i.e. left one cavity 3, left two cavities 4, right one cavity 5, right two cavities 6, and both sides of support column 21 have respectively One opening, that is, the first left port 7 and the first right port 8 communicate with the second left chamber 4 and the first right chamber 5 respectively. The openings on both sides of the support column 21 are connected to the control reversing valve 18 through pipelines, and the control reversing valve 18 is passed through the pipeline. It communicates with the low-pressure water injection well 20. There is an opening at both ends of the pump body 1, ...
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The invention provides a power-free pressurizing system for water injection of an oilfield. The power-free pressurizing system comprises a power-free pump which is provided with a cylindrical pump body; a supporting column is placed in the middle of the pump body; a piston rod with pistons arranged at two ends is placed in the center of the supporting column; the pump body is divided into four chambers by the two pistons; each of the two sides of the supporting columns is provided with an opening, and the two openings are respectively communicated with two adjacent chambers of the supporting column; the openings in two sides of the supporting columns are connected with control reversing valves through pipelines; the control reversing valves are communicated with a low-pressure water injection well through the pipelines; each of the two ends of the pump body is provided with an opening; the openings in two ends of the pump body are connected in parallel with two one-way valves through the pipelines; a pump station is connected with the control reversing valves through the pipelines, a check valve and a throttle valve; and the pump station is also connected with a lower pipeline through the pipeline, the check valve and the throttle valve. According to the power-free pressurizing system for the water injection of the oilfield, water from the pump station is adopted as the power for driving the power-free pump to work in order to generate high-pressure water and low-pressure water; and the high-pressure water is injected into a high-pressure water injection well, while the low-pressure water is injected into the low-pressure water injection well.
Description
technical field [0001] The invention relates to water injection equipment for underground oil layers, that is, a non-power boosting system for oil field water injection. Background technique [0002] Most of my country's oilfields adopt the production method of water injection to maintain formation pressure. Therefore, many large water injection stations were established in the early stage of oilfield development. Many water injection pumps with a certain rated pressure and rated displacement that can meet the water absorption requirements of water injection wells are installed in the large water injection stations. Water injection pipeline with certain pressure bearing capacity. [0003] With the development of the oil field, due to the poor filtration of water quality and the different geological conditions of various water injection wells, some water injection wells are seriously clogged and the water injection pressure is high, while some water injection wells still mai...
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IPC IPC(8): F04B9/109
Inventor 刘勤许铁民
Owner TIANJIN BANGPU PETROLEUM TECH EQUIP