Construction method and device based on temporary plugging of reservoir

Abstract

The embodiment of the invention provides a construction method and device based on temporary plugging of a reservoir. The method comprises the steps of determining the dosage of an initial temporary plugging agent on the basis of perforation shot hole information of a target reservoir so as to prepare the initial temporary plugging agent; injecting the initial temporary plugging agent into the target reservoir, and detecting a pressure increasing value of the target reservoir, wherein the pressure increasing value comprises the pressure difference of the reservoir after the initial temporary plugging agent is injected and before the initial temporary plugging agent is injected; calculating the shot hole erosion diameter by utilizing pump injection historical information of a perforation shot hole in the condition that the pressure increasing value is smaller than a pressure increasing threshold value; obtaining the dosage of a secondary temporary plugging agent according to the shot hole erosion diameter so as to prepare the secondary temporary plugging agent; and injecting the secondary temporary plugging agent into the target reservoir so as to temporarily plug the perforation shot hole. According to the method, secondary temporary plugging is performed according to the pressure condition of the target reservoir, so that a good plugging effect can still be achieved in the condition that the perforation shot hole is eroded, and the exploitation quantity of oil and gas resources in the target reservoir is increased.

Description

technical field [0001] The embodiments of this specification relate to the technical field of geological exploration and development, and in particular to a construction method and device based on temporary plugging of reservoirs. Background technique [0002] my country is rich in tight oil and gas reserves. In recent years, more and more attention has been paid to the development of tight oil and gas reservoirs. However, due to the characteristics of low reservoir porosity, high oil and gas seepage resistance, and rapid energy depletion in tight oil and gas reservoirs, the production efficiency is low when conventional methods are used for production, and the corresponding oil and gas production cannot be obtained stably and efficiently. [0003] Temporary plugging and diversion is an effective measure to improve low production wells. Temporary plugging diversion puts a certain amount of temporary plugging agent in the main fractures of the reservoir to plug the main frac...

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Problems solved by technology

[0005] The purpose of the embodiment of this specification is to provide a construction method and device based on reservoir temporary plugging to solve the problem of how to determine the occurrence form corresponding to natural gas hydrate

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