Separate-layer sand blocking simultaneous production pipe string
A layered pipe and pipe string technology, applied in the direction of drill pipe, casing, production fluid, etc., can solve the problems that the separate production technology cannot meet the production needs, the oil production cannot be carried out smoothly, and the oil well is disturbed, so as to improve the production of a single well and production timeliness, avoiding interlayer interference, and reasonable structural design
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[0008] The present invention will be further described below in conjunction with drawings and embodiments. However, those skilled in the art should know that the present invention is not limited to the specific embodiments listed, as long as it conforms to the spirit of the present invention, it should be included in the protection scope of the present invention.
[0009] See attached figure 1 . The layered sand retaining pipe string of the present invention includes a layered pipe string and a lifting pipe string, and the layered pipe string is fixed in the wellbore; the lifting pipe string is connected to the lower end of the sucker rod, The column reciprocates.
[0010] Upper packer 3, safety joint I4, screen pipe I5, upper sealing working cylinder 6, safety joint II7, lower packer 8, safety joint III9, lower sealing working cylinder 10, screen pipe II11, wire The plug 12 is fixedly connected sequentially through the oil pipe from top to bottom, the upper packer 3 is loc...
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