Preparation method and pump injection method of slick water fracturing fluid system for shale oil reservoirs
A fracturing fluid and shale oil technology, which is applied in the field of preparation of slick water fracturing fluid systems for shale oil reservoirs, can solve the problems of inability to adjust the viscosity of the fracturing fluid, increase the settling speed of the fracturing fluid system, and achieve the stirring rate The effect of enhancing, enhancing oil recovery, enhancing permeability and supporting force
Active Publication Date: 2021-10-29
大庆永铸石油技术开发有限公司
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Problems solved by technology
[0005] For this reason, the present invention provides a pumping method for a slick water fracturing fluid system for shale oil reservoirs, which can solve the technical problem that it is impossible to increase the oil recovery rate by adjusting the viscosity of the fracturing fluid and the settlement velocity of the fracturing fluid system in real time
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[0069] In order to make the objects and advantages of the present invention, the present invention will be further described below in connection with the embodiments;
[0070] A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. It will be understood by those skilled in the art that these embodiments are merely illustrative of the technical principles of the invention, and are not intended to limit the scope of the invention.
[0071] It should be noted that the term "upper", "lower", "left", "left", ",", ",", ",", ",", ",",, is, based on the figures The direction or positional relationship is shown, which is merely intended to be described, rather than indicating or implying that the device or element must have a specific orientation, and is not understood to limit the limitation of the invention.
[0072] Further, it is also necessary to explain that in the description of the present invention, the term "mount", "co...
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The invention relates to a preparation method and a pump injection method of a slick water fracturing fluid system for shale oil reservoirs. The preparation method comprises the following steps: S1, a drag reducer, a clay stabilizer and a discharge aiding agent are injected into a preparation bin through a first feed port to form a first mixture; s2, a surfactant is injected into the preparation bin through a second feeding opening to be stirred with the first mixture, and fracturing fluid is formed; s3, a center control unit obtains the viscosity of the fracturing fluid through a first detection device arranged in the preparation bin, and the stirring efficiency of a stirring device and the feeding amount of a second feeding port are adjusted; s4, the center control unit opens a third electromagnetic valve to inject qualified fracturing fluid into the stirring chamber, and meanwhile opens a fourth electromagnetic valve to inject sand fluid into the stirring chamber to be stirred with the fracturing fluid to form a fracturing fluid system; and S5, the central control unit opens a fifth electromagnetic valve, a second detection device obtains the settling velocity of a fracturing fluid system, and the settling velocity is injected into the shaft to fracture the shale oil reservoir. By arranging the central control unit, the oil extracting rate is increased.
Description
Technical field [0001] The present invention relates to the field of slippery hydraulic fluid systems, and more particularly to the preparation method of slippery hydraulic fluid system with shale reservoirs and its pump. Background technique [0002] Commonly used fracturing fluid is mainly aqueous phylogenesis with a hydrazine and its modifier as a thickener, the fracturing fluid has been widely used in each oil and gas field, and has achieved good production effect, traditional fracturing Liquid against oil and gas layer rock minerals and oil gas layer fluids cause damage. [0003] Slip water is a fracturing fluid system for hydraulic fracturing of shale oil and gas storage, which is one of the key liquids developed by shale gas. Compared with the traditional gel fracturing fluid system, the slipper fracturing fluid system is widely used in shale gas development with its efficient and low cost. Compared to the traditional gel fracture liquid system, the slipper fracturing flui...
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IPC IPC(8): C09K8/66E21B43/267
CPCC09K8/602C09K8/66E21B43/267
Inventor 侯大伟曾庆涛
Owner 大庆永铸石油技术开发有限公司