Double-channel sand-carrying oil recovery pump for thermal recovery of heavy oil
A thermal recovery of heavy oil, dual-channel technology, applied in the direction of pumps, pumps with flexible working elements, liquid displacement machinery, etc., can solve the problems of prolonging the service life of oil well production cycle, to reduce wear and prevent sand stuck problems , the effect of prolonging the service life
Inactive Publication Date: 2014-05-28
PANJIN HONGHAI DRILLING & EXPLORATION TECH DEV CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to provide a double-channel sand-carrying oil pump for thermal recovery of heavy oil in view of the problem of sand stuck in the thermal oil recovery process of heavy oil horizontal wells, which can effectively prevent the problem of sand stuck during work and reduce the pump’s fatigue wear, effectively prolonging the service life of the pump and the production cycle of the oil well
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[0007] See figure 1 , the specific structure is as follows: according to the prior art, the plunger 2 is assembled in the pump cylinder 4, the upper part of the plunger 2 is provided with an upstream traveling valve 1, the lower part is provided with a downstream traveling valve 7, and the pump chamber 3 is between the upstream and downstream traveling valves. A fixed valve 9 is set at the lower end of the pump cylinder 4, and a pump cavity 8 is arranged on the upper part of the fixed valve 9; an outer pump cylinder 5 is arranged on the outer periphery of the pump cylinder 4, and an annular space is formed between the pump cylinder 4 and the outer pump cylinder 5 for sand sedimentation The channel 6 is connected to the liquid inlet hole 10 (liquid inlet pipe) between the outside of the outer pump barrel and the pump cavity 8 of the pump barrel, and the lower end of the outer pump barrel 5 is connected to the sand settling pipe 11 . The above-mentioned plunger 2 is 6.8m long, t...
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The invention discloses a double-channel sand-carrying oil recovery pump for thermal recovery of heavy oil. The double-channel sand-carrying oil recovery pump comprises a pump barrel and a plunger. The pump barrel is provided with an upper traveling valve and a lower traveling valve, and the plunger is provided with a fixed valve. The double-channel sand-carrying oil recovery pump is characterized in that an outer pump barrel is arranged on the outer periphery of the pump barrel, an annular sand settling channel is formed between the pump barrel and the outer pump barrel, liquid inlet holes are formed in positions between the outside of the outer pump barrel and a pump cavity of the pump barrel in a communicated manner, and a sand settling pipe is connected to the lower end of the outer pump barrel. The double-channel sand-carrying oil recovery pump has the advantages that the problem of sand blockage during operation can be effectively solved, abrasion on the pump can be relieved, and the service life of the pump and the production cycle of an oil well can be prolonged.
Description
technical field [0001] The invention relates to an oil production device for an oil production well, in particular to a dual-channel sand-carrying oil production pump for thermal recovery of heavy oil. Background technique [0002] The heavy oil horizontal well thermal oil recovery technology currently used in oil fields is a new oil recovery technology researched and developed with the development of science and technology. The horizontal well oil recovery technology has a large oil drainage area. Under the same reservoir area, its production capacity is 4-8 times that of vertical wells, especially in heavy oil reservoirs, due to high viscosity, poor reservoir physical properties, and poor steam absorption capacity, the research on the technology of steam injection and thermal recovery of heavy oil in horizontal wells can effectively improve oil recovery. The process of steam injection and thermal extraction of heavy oil in horizontal wells is complicated, and the problem o...
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IPC IPC(8): F04B47/12
Inventor 马明李艳霞刘广义范旭刘茜裴雯马海滨刘勇赵莹尹艳孟庆新秦瑛吴勇李红闫文荣张朔
Owner PANJIN HONGHAI DRILLING & EXPLORATION TECH DEV CO LTD