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 Application of extraction tool by layer - bridge plug_packer_layered oil extraction 【Kerui Mechanical】
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Application of extraction tool by layer
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Changqing oilfield is complex oil water field. the differences between layers are big, so there is persibility to extract by layer. But there is limitation because the location. It’s difficult to widely spread, especially when the downhole tool lose efficacy and cannot be lifted out after accident, hole collaspe because overhaul equipment cannot be used. To develop a new kind of extraction technology is always a hard technical problem.

Therefore, Kerui intergrates technology of whole cylinder pump, hollow pump and overbridge pump, adopts double inlet sub and installs air cylinder above the pump to develope mixture anti-air oil pump and related tools. The sub, shunt fixed valve and traveling valve are all designed according to standard with good universal property and tightness. Avoid pump loss, improve effectiveness and service life. Add air cylinder to solve the problem of air-lock caused by lower air when lower annulus sealed. This pump has national patent, see details in http://www.pykrgs.com/zhuanli/37.html.

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