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CN108457635A
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A kind of oblique paraboloid cumulative pressure break of rotation increases the device of shale gas recovery ratio
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A kind of cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio
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A kind of rotation arc surface cumulative pressure break increases the device of shale gas recovery ratio
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A kind of parabolic cylinder cumulative pressure break increases the device of shale gas recovery ratio
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A kind of arc surface three combines the device of cumulative pressure break increase shale gas recovery ratio
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A kind of paraboloid of revolution cumulative pressure break increases the device of shale gas recovery ratio
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CN108331567A
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A kind of parabolic cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio
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A kind of paraboloid of revolution three combines the device of cumulative pressure break increase shale gas recovery ratio
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A kind of surface of revolution three combines the device of cumulative pressure break increase shale gas recovery ratio
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A kind of cylinder cumulative pressure break increases the device of shale gas recovery ratio
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A kind of circular arc cylinder cumulative pressure break increases the device of shale gas recovery ratio
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A kind of circular arc cylinder three combines the device of cumulative pressure break increase shale gas recovery ratio
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A kind of double combination cumulative pressure breaks of the paraboloid of revolution increase the device of shale gas recovery ratio
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A kind of surface of revolution cumulative pressure break increases the device of shale gas recovery ratio
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