Underground coal mine vehicle-mounted string type double-path sand fracturing complete equipment
A sand fracturing and mine car technology, which is applied in the direction of pump devices, transport buses, mechanical equipment, etc., can solve the problems affecting the effect of fracturing and drainage
Active Publication Date: 2021-12-28
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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Problems solved by technology
[0002] Hydraulic fracturing can form a three-dimensional fracture network in brittle coal strata, and establish a new coal seam gas seepage channel in the coal strata, which greatly improves the extraction efficiency of coal seam gas. Automatic closure affects the final fracturing drainage effect. It is urgent to add proppant to support the fracture during the fracturing process, improve the retention time of the fracturing fracture, and prolong the drainage time of fracturing enhancement and drainage
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[0041] The equipment as a whole is composed of fracturing pumps, power motors, power supply control, water storage and supply, and sand mixing and other functional modules integrated on five customized flat-bed mining vehicles. System, power supply protection system and remote monitoring system form a set of remote control integrated sand-mixing and sand-carrying fracturing equipment that is convenient for underground transportation and construction of coal mines.
[0042] The 5 custom-made flat-bed mining vehicles of the above-mentioned equipment are numbered in sequence, and the corresponding equipment and instruments are integrated according to their functions. Customized flat mine car structure such as figure 1 As shown, the front concentric fixing locking device 1-1 is provided on both sides of the front end of the custom-made flat mine car, and the rear concentric fixing locking device 1-3 is provided on both sides of the rear end of the mine car, which can be connected ...
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The invention relates to double-path sand fracturing complete equipment, belongs to the technical field of coal mine equipment, and particularly relates to underground coal mine vehicle-mounted string type double-path sand fracturing complete equipment. Equipment such as a sand fracturing pump, a fracturing pump motor, a system control cabinet, a filtering water tank, a water supply pipeline and a sand adding and mixing device are sequentially and separately arranged on a customized mine car by adopting a string structure, so that various functional requirements of underground sand fracturing are met, integration of the system is completed to a great extent, and the underground coal mine vehicle-mounted string type double-path sand fracturing complete equipment adapts to the construction environment with the underground coal mine roadway type working space as a main part; and meanwhile, sand-carrying and clear water double-water-path arrangement in the system and system self-monitoring are adopted, the safe and stable operation guarantee capacity of the underground single sand fracturing pump set is improved, the emergency clear water and sand-carrying pipeline switching efficiency is greatly improved, and the capability of performing sand fracturing engineering construction in an underground limited environment is improved.
Description
technical field [0001] The invention relates to a complete set of two-way sand-adding fracturing equipment, which belongs to the technical field of coal mine equipment, and in particular to a vehicle-mounted two-way sand-filling fracturing complete set for underground coal mines. Background technique [0002] Hydraulic fracturing can form a three-dimensional fracture network in brittle coal strata, and establish a new coal seam gas seepage channel in the coal strata, which greatly improves the extraction efficiency of coal seam gas. Automatic closure affects the final fracturing drainage effect. It is urgent to add proppant to support the fracture during the fracturing process, improve the retention time of the fracturing fracture, and prolong the drainage time of fracturing enhancement and drainage. On the other hand, the sand-carrying high-speed fluid can also greatly improve the efficiency and effect of cutting and cavitation in coal rock formations, so the sand-filled fr...
Claims
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IPC IPC(8): E21B43/26F04B17/03F04B49/06F04D13/06B61D15/00B01F7/18B01F15/02B01D29/03
CPCE21B43/26F04B17/03F04B49/06F04D13/06B61D15/00B01D29/03Y02P70/10
Inventor 赵继展张群张俭孙四清陈志胜董敏涛王晨阳刘乐
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP