Chute counting type infinite-order full-bore well completion fracturing device
A counting, infinite-level technology, applied to wellbore/well valve devices, wellbore/well components, production fluids, etc., can solve the problem of limited number of fracturing stages, large surface pressure fluctuations, and increased testing blindness Misjudgment and rework of the operation of the switch well, to reduce the difficulty of manufacturing and downhole, and prevent the failure of opening
A counting, infinite-level technology, applied to wellbore/well valve devices, wellbore/well components, production fluids, etc., can solve the problem of limited number of fracturing stages, large surface pressure fluctuations, and increased testing blindness Misjudgment and rework of the operation of the switch well, to reduce the difficulty of manufacturing and downhole, and prevent the failure of opening
CN114876408APending Publication Date: 2022-08-09武汉友智服能源科技有限公司
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[0041] For a better understanding of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments.
[0042] like figure 1 As shown in the figure, a chute counting type infinite-stage full-bore completion fracturing device includes a fracturing slip sleeve and a soluble information ball. The fracturing slip sleeve includes an upper joint 1, a lower joint 2, an outer sleeve 3, a fixed The sleeve 4 and the annular piston 5, the upper and lower ends of the outer sleeve are respectively connected with the upper and lower joints, the fixed sleeve is installed in the outer sleeve and is sleeved with the bottom of the extension of the upper joint, and the outer sleeve is connected to the extension of the upper joint. and the fixed sleeve to form an annular fracturing cavity, the annular piston is arranged in the annular fracturing cavity, and is laterally connected and positioned with the extension of the uppe...
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The invention provides a chute counting type infinite-order full-bore well completion fracturing device which comprises a fracturing sliding sleeve and a soluble information ball, the fracturing sliding sleeve comprises an upper connector, a lower connector, an outer sleeve, a fixed sleeve, an annular piston and a counting core cylinder, and the annular piston seals the outer sleeve and inner and outer fracturing holes in the upper connector; the counting core cylinder is in clearance fit with the inner wall of the outer sleeve, a variable-diameter limiting ball seat and a rotary counting moving mechanism are arranged on the counting core cylinder, a limiting sleeve is arranged on the periphery of the counting core cylinder at the upper end of a limiting boss and corresponds to the position above the variable-diameter limiting ball seat, and a soluble information ball is matched with the variable-diameter limiting ball seat. According to the invention, a full-bore infinite-stage sliding sleeve is realized, a rotary sliding chute type counting mode is adopted, the structure is compact, the tool is simple and short, the counting quantity is easy to expand, the ball throwing structure is simple, the staged fracturing process requirements of an ultra-deep and ultra-long horizontal section well can be met, and the working efficiency is improved. Sliding sleeve opening faults are reduced, the fracturing efficiency is improved, and the construction cost is reduced.
Description
technical field [0001] The invention belongs to the technical field of oil and gas development, and in particular relates to a chute counting type infinite-stage full-bore completion fracturing device. Background technique [0002] The multi-stage and staged stimulation completion mode of horizontal wells is the main way to stimulate the production of unconventional oil and gas reservoirs. It is very urgent to improve the speed and efficiency of fracturing technology for ultra-deep and ultra-long horizontal wells. The current staged fracturing technology of pumping bridge plug and perforation combined with multi-stage sliding sleeve packer fracturing technology is the mainstream technology for horizontal multi-stage multi-stage fracturing stimulation, which can increase the stimulation effect and scale of shale reservoirs. Effective use provides strong technical support. [0003] The pumped bridge-plug perforation combined staged fracturing technology uses coiled tubing, cr...
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Patent Timeline
09 Aug 2022
Publication
CN114876408A
- IPC
- E21B34/14; E21B43/26
- CPC
- E21B34/142; E21B43/26
- Inventors
- 常序祥