Fracturing sliding sleeve and fracturing pipe string including fracturing sliding sleeve
A technology for fracturing sliding sleeves and inner sleeves, which is applied in the direction of casing, drill pipe, wellbore/well valve device, etc., and can solve the problems of long period, high cost, and affecting the running of downhole tools, etc.
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[0027] The present invention will be further described below in conjunction with accompanying drawing.
[0028] figure 1 and figure 2 Different states of the frac sleeve 100 according to the present invention are shown. Such as figure 1 and 2 As shown, the fracturing sliding sleeve 100 includes an outer shell 2 , an inner sleeve 3 , a ball seat 5 and a ball 8 . Wherein, the casing 2 is cylindrical, and a circulation hole 21 communicating with the inside and the outside is provided on the wall thereof, so as to transport the fracturing fluid to the outside. The inner sleeve 3 is arranged in the inner cavity of the outer shell 2, and is used to block the circulation hole 21 in the initial state, such as figure 1 shown. Under the action of hydraulic pressure, the inner casing 3 can move relative to the outer casing 2 to expose the circulation hole 21. In this case, the fracturing operation can be performed, such as figure 2 shown. The ball seat 5 is fixedly arranged in ...
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