Ultra-short radius horizontal well hydraulic fracturing tool
A hydraulic fracturing and ultra-short radius technology, which is applied in directional drilling, wellbore/well components, production fluids, etc., can solve the problems that horizontal wellbore cannot realize hydraulic fracturing, and achieve the effect of preventing leakage
Inactive Publication Date: 2014-08-20
DAQING JINGTAI PETROLEUM ENG TECH
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[0003] The purpose of the present invention is to provide a hydraulic fracturing tool for ultra-short-radius horizontal wells to solve the problem that hydraulic fracturing cannot be achieved in horizontal wells after ultra-short-radius horizontal drilling
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[0013] The technical scheme of the present invention will be further described below in conjunction with accompanying drawing, but should not be construed as limiting the present invention:
[0014] figure 1 It is a structural schematic diagram of the present invention, figure 2 yes figure 1 The enlarged view of the connection device in the figure, as shown in the figure, the ultra-short radius horizontal well hydraulic fracturing tool includes oil pipe 1, variable button 2 and guide pipe 3, oil pipe 1 is connected through variable button 2 and guide pipe 3, and guide pipe 3- There are multiple slits on the side, and the function of the guide tube is to realize turning. The guide pipe 3 is covered with a high-pressure pipe 4, the top of the high-pressure pipe 4 has a nozzle 5, and nozzles 6 are arranged on both sides of the nozzle 5, and the high-pressure water flow is ejected through the nozzle to realize fracturing. Among them, the high-pressure pipe 4 is multi-section, ...
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The invention relates to an ultra-short radius horizontal well hydraulic fracturing tool. The ultra-short radius horizontal well hydraulic fracturing tool comprises an oil pipe, an adapter and a guide pipe. The oil pipe is connected with the guide pipe through the adapter. A plurality of kerfs are formed in one side of the guide pipe. A high-pressure pipe is arranged inside the guide pipe in a sleeved mode. A spray head is arranged at the top end of the high-pressure pipe. Nozzles are arranged on the two sides of the spray head. The high-pressure pipe is divided into a plurality of sections, wherein every two adjacent sections of the high-pressure pipe are connected through a connector. Each connector comprises a connector body, standby caps and expansion rings. The ends of every two adjacent sections of the high-pressure pipe enter the corresponding connector body, the corresponding standby caps are installed at the two ends of each connector body, and the joints between each connector body and the corresponding standby caps are provided with the corresponding expansion rings. The ultra-short radius horizontal well hydraulic fracturing tool can make a turn in an ultra-short radius mode, realize hydraulic fracturing, completely prevent leakage, and realize hydraulic fracturing on a horizontal well bore after ultra-short radius horizontal drilling.
Description
technical field [0001] The invention belongs to the field of oilfield machinery and relates to a hydraulic fracturing tool for ultra-short radius horizontal wells. Background technique [0002] In recent years, with the continuous upgrading of oil production engineering technology, various measures and technologies have also developed in diversification. There are many types of technologies for the remaining reservoir improvement of a single well. At present, the ultra-short radius directional horizontal drilling process is mostly used. In this process, windows are opened in the original well casing to create a deflection. The radius of curvature is 3.2 meters to complete a 90° turn. The flexible drilling tool is used to drill more than 50 meters in the horizontal direction. It is a very effective technological measure to remove plugging in the remaining oil reservoirs of old wells and near the wellbore; conventional horizontal wells mostly use hydraulic staged fracturing, ...
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IPC IPC(8): E21B43/26E21B7/04
Inventor 张亚胜
Owner DAQING JINGTAI PETROLEUM ENG TECH