A method to improve the adaptability of self-suspending proppant reservoir

Abstract

The invention belongs to the technical field of oil and gas reservoir fracturing, and specifically relates to a method for improving the adaptability of a self-suspending proppant to a reservoir, and prepares a self-suspending proppant with the largest adhesion amount of a thickener, and the proppant is quartz sand, ceramsite or bismuth The thickener is partially hydrolyzed polyacrylamide or functional polymer or guar gum, and the binder is sucrose, polyalcohol resin or resin material; self-suspending proppant and common proppant according to 10:1, 9:1, 8:1, 7:1, 6:1, 5:1, 4:1, 3:1, 2:1 and 1:1 are mixed to obtain mixed proppant; in the target reservoir Under the conditions of temperature, solvent water and “liquid:sand” ratio, measure the complete suspension and initial settlement time of the mixed proppant particles, and draw the relationship curve between the complete suspension time, the initial settlement time and the mixing ratio; determine the mixing ratio from the curve according to the target reservoir. Matching. The adaptability of the self-suspending proppant reservoir is greatly improved, and the economic benefit is improved.

Description

technical field [0001] The invention belongs to the technical field of oil and gas reservoir fracturing, and in particular relates to a method for improving the adaptability of self-suspension proppant oil reservoirs. Background technique [0002] Hydraulic fracturing, as a technology for oil and gas reservoir stimulation, is the most effective method for increasing production of oil and gas wells and increasing injection of water injection wells. In recent years, the development of tight oil and shale gas has made a great contribution to alleviating the contradiction of world energy supply, which is inseparable from the development of fracturing technology. With the gradual expansion of the application field and construction scale of fracturing technology, the consumption of proppant and fracturing fluid is increasing year by year. Fracturing technology has released tight oil and shale gas production capacity, which has also caused global oil and gas supply to exceed deman...

AI Technical Summary

Problems solved by technology

[0003] Since there are differences in reservoir temperature, solvent water salinity, and “liquid:sand” ratio of different fracturing targets, it is necessary to adjust the performance of self-suspending proppant products (that is, adjust the type of proppant and change the adhesion of thickener). volume) to meet the requirements of different reservoir technical indicators, which greatly increases the number of self-suspending proppant product specifications and the cost of production, storage and management

Images