Separate zone production technical string capable of protecting oil reservoirs
A technology for oil layer protection and layered oil recovery, applied in the direction of drill pipe, casing, production fluid, etc., can solve the problems of not being able to protect the oil layer, and achieve the effects of reasonable pipe string structure design, convenient use, and convenient shutdown
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[0012] The present invention will be described in further detail below in conjunction with accompanying drawing:
[0013] The protected oil layer layered oil production process string of the present invention is composed of the oil pumping string and the protective oil layer throwing string, and the oil pumping string is composed of a switch 11, a core pipe 7, a plug 4, a screen pipe 3, a blowout prevention pump 2, and an oil pipe Column 1 is sequentially fixed and connected; the oil layer protection string is composed of plug 4, oil layer protector 9, safety joint 8, Y341 self-test seal packer 10, Y441 type packer 6, and hand 5 are fixedly connected in sequence , wherein, the oil extraction string switch 11 is inserted into the oil layer protector 9 of the oil layer protector 9, and the liquid inlet channel of the oil layer protector 9 is opened, and the crude oil enters the wellbore to meet the production needs.
[0014] More than 2 sets of oil layer protectors 9 can be inst...
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