High-elasticity and high-toughness gel micro-nano particle and preparation method thereof

Abstract

The invention provides a high-elasticity and high-toughness gel micro-nano particle and a preparation method thereof. The high-elasticity and high-toughness gel micro-nano-particle is prepared from, by weight, 5 to 20 parts of a monomer, 0.05 to 0.2 part of nano-cellulose, 0.015 to 0.6 part of a cross-linking agent, 0.04 to 0.2 part of an initiator and 79 to 95 parts of deionized water. The invention further provides the preparation method of the high-elasticity and high-toughness gel micro-nano particle. The nano-cellulose is introduced into a gel network structure as a rigid unit of the gel,so the toughness of the gel is improved, and the contradiction between the elasticity and the viscosity of the gel is regulated; and the preparation process is simple and easy to operate, the cost islow, and the problems of low mechanical strength, poor stability, poor crack regulation and control capability and the like of a gel system are effectively solved.

Description

Technical field [0001] The invention belongs to the technical field of nano particles and preparation, and specifically relates to a gel micro-nano particle with high elasticity and high toughness and a preparation method thereof. Background technique [0002] Tight oil is the most realistic and potential unconventional oil and gas resource in my country, and major discoveries have been made in the continental strata of China's Ordos, Junggar, and Sichuan basins. However, compared with tight oil reservoirs in North America, most of the tight oil reservoirs in my country are continental deposits, with low formation energy, strong reservoir heterogeneity, and poor crude oil quality. The traditional fracturing development method can obtain a higher initial stage. Production, but the formation energy declines rapidly, the single well production is low and the decline rate is fast, the predicted recovery rate is generally low (5%-10%), and the development cost is high. Therefore, how ...

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Problems solved by technology

[0004] Aiming at the above-mentioned problems in the prior art, the present invention provides a high-elasticity and high-toughness gel micro-nano particle and a preparation method thereof. The high-elasticity and high-toughness gel micro-nano particle introduces nanocellulose as a rigid unit of the gel In the gel network structure, the toughness of the gel is increased, the contradiction between gel elasticity and viscosity is reconciled, and the preparation process is simple and easy to operate, and the cost is low, which effectively solves the problems of low mechanical strength, poor stability and poor crack control ability of the gel system.

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