Soaking time determination method and device

Abstract

The embodiment of the invention provides a soaking time determination method and a soaking time determination device. The method comprises the following steps: obtaining the type information of a fracturing fluid of a target well, and obtaining the gel breaking viscosity of the fracturing fluid according to the type information of the fracturing fluid; according to the fracturing pump injection program of the target well, the single-fracture fracturing fluid dosage is obtained; obtaining invasion area thickness and invasion area permeability according to the logging data of the target well; and the soaking time of the target well is determined according to the fracturing fluid gel breaking viscosity, the single-slit fracturing fluid dosage, the invasion area thickness and the invasion areapermeability. After the soaking time determined by the embodiment of the invention is adopted for soaking, the flowback rate of the propping agent can be effectively reduced, a better flowback effectcan be achieved, and the flow conductivity of cracks is ensured.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of determining the soaking time, in particular to a method and equipment for determining the soaking time. Background technique [0002] During the development of unconventional shale oil and gas resources, due to the characteristics of low porosity and low permeability in reservoir conditions of such unconventional oil and gas resources, large-scale horizontal well multi-stage multi-stage fracturing technology has been widely used. The horizontal well multi-stage fracturing technology is used to form a complex fracture network in the reservoir and improve the productivity of the horizontal well. [0003] The construction of multi-stage fracturing technology for horizontal wells in unconventional reservoirs is often on the scale of "Wanfangshui and Qianfangsha", where "Wanfangshui" refers to fracturing fluid and "Qianfangsand" refers to proppant. Fracturing fluid flowback is a very...

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Problems solved by technology

[0006] The embodiment of the present invention provides a method and equipment for determining the soaking time to overcome the determination of the soaking time in the prior art, which mainly relies on field experience, and there is a lot of blindness and randomness in the determination of the soaking time, resulting in The problem of poor flowback effect

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