High-expansibility naked eye suspension adhering system and method
A high-expansion, subsidized technology, applied in drilling equipment and methods, earthwork drilling, wellbore/well components, etc., can solve the problems of high material consumption, low construction reliability, complex construction technology, etc., and reduce emissions , Reduce the consumption of drilling materials and optimize the effect of wellbore structure
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[0048] The present invention will be further described below in conjunction with the accompanying drawings, and the protection scope of the present invention is not limited to the following description.
[0049] A high expansion rate naked eye suspension subsidy system, such as figure 2 , Figure 9 and Figure 10 As shown, it includes a supplementary pipe 1 and a tool pipe string. The tool pipe string is composed of an auxiliary hydraulic cylinder 2, a lower hydraulic cylinder 3, a hydraulic variable diameter expansion cone 4, a lower drill pipe adapter 5, and a lower hydraulic anchor 6. , The lower pressure ball seat 7, the upper hydraulic cylinder 8, the upper hydraulic anchor 9, the upper drill pipe conversion joint 10, the drill pipe 11 and the upper pressure ball seat 14 are formed.
[0050] Such as Figure 6 and Figure 7 As shown, the hydraulic variable diameter expansion cone 4 includes an upper claw plate 405, a lower claw plate 401, an upper expansion block 403,...
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