A lift-up self-suspension expansion screen expansion device
A technology of screen and cone expansion, which is applied in the direction of wellbore/well components, production fluid, earthwork drilling and production, etc. It can solve the problems that it is difficult to expand the screen to apply the pressure on bit and the outer diameter of the drill tool assembly is small, so as to avoid drilling The effect of not easy to apply pressure, compact structure and convenient operation
Active Publication Date: 2019-12-13
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
However, for sand control with expandable screens in small-sized casings such as 5” casings, due to the limitation of borehole size, the outer diameter of the expander and its BHA is relatively small, so it is difficult to apply WOB to the expandable screen, and the Pressure expansion
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[0018] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0019] Such as figure 1 As shown, the lift-up type self-suspended expandable screen expansion device of the present invention includes an expanding cone mandrel and a self-suspended guide shoe. Described parts: boot shoe joint 3, boot shoe connecting sleeve 7, boot shoe upper cone 9, boot shoe upper cone pressure cap 10, boot shoe slip 16, boot shoe slip spring 17, boot shoe slip cover 18 , guide shoe lock ring 19, guide shoe lower cone 20, guide shoe cone piston 21, guide shoe lock block 22, guide shoe lock block piston 23, guide shoe shear nail 24, guide shoe limit ring 25, guide shoe liquid Cylinder 26, shoe-leading lower joint 27, the upper and lower ends of the shoe-leading central tube 4 are threadedly connected with the shoe-leading upper joint 3 and the shoe-leading lower joint 27, and the shoe-leading liquid cylinder 26 and the shoe-le...
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The invention discloses a lifting self-suspension expanding screen diameter expansion device which comprises an expanding cone mandrel, an expanding cone and a self-suspension guiding shoe. The expanding cone is preset in the self-suspension guiding shoe, connected with the bottom end of an expanding screen, tripped into a downhole and suspended at a specified position by a suspender, the expanding cone mandrel is tripped into the self-suspension guiding shoe and sealed with the self-suspension guiding shoe and the expanding cone, the self-suspension guiding shoe is anchored on the inner wallof a sleeve by pressing, the expanding cone is released and lifted out of the self-suspension guiding shoe by the expanding cone mandrel through an inverted suspension mechanism, lifting is continued,and expanding screen diameter expansion is realized.
Description
technical field [0001] The invention relates to the technical field of downhole tools, in particular to a lift-up self-suspended expandable screen expansion device. Background technique [0002] For unconsolidated sandstone reservoirs, the expansion screen completion technology can well solve the serious problem of sand production in this reservoir, especially in some high-yield blocks abroad, ordinary screen sand control is easy to cause screen erosion, so the expansion screen is often used For sand control. However, for sand control with expandable screens in small-sized casings such as 5” casings, due to the limitation of borehole size, the outer diameter of the expander and its BHA is relatively small, so it is difficult to apply WOB to the expandable screen, and the Pressure expansion. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a self-suspended self-suspended expandable screen diameter expansion devic...
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IPC IPC(8): E21B43/10
CPCE21B43/108
Inventor 张镇张恒王玥杨文领王云云孙巍巍黄敏周后俊王学正秦诗涛
Owner BC P INC CHINA NAT PETROLEUM CORP