Sliding sleeve type fracturing module, device including the module and method of using the device
A sliding sleeve type fracturing technology, which is applied in the direction of wellbore/well valve device, earthwork drilling and production, wellbore/well parts, etc. It can solve the problem that the sliding sleeve cannot be closed and the unlimited number of staged fracturing cannot be realized. , It is impossible to carry out unrestricted series segmentation of the fixed pipe column, etc., so as to achieve the effect of convenient operation
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[0055] The present invention will be further described below in conjunction with accompanying drawing.
[0056] Figure 1a Shown is a composite sliding sleeve 10 of a sliding sleeve type fracturing assembly according to the present invention, which includes a fixed outer cylinder 11 and an inner cylinder 12 connected to the inner wall of the outer cylinder 11 through shear pins 13 . Wherein, a pump opening valve 14 is provided on the outer cylinder 11 , and a first tooth-shaped member 15 is provided on the inner wall of the inner cylinder 12 . exist Figure 1a In the illustrated embodiment, the first toothed member 15 is formed in one piece with the inner barrel 12 . In one embodiment, a positioning groove 16 and a positioning piece 17 are provided on the mating surfaces of the outer cylinder 11 and the inner cylinder 12 . The positioning groove 16 and the positioning piece 17 are arranged to be in Figure 1a In the shown initial state, they are not engaged with each other, b...
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Abstract
Description
Claims
Application Information
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