A method for quickly performing comprehensive sweet spot identification based on a cuttings sample

Abstract

This invention pertains to oil and gas reservoir evaluation, specifically disclosing a method for rapid comprehensive sweet spot identification based on rock cuttings samples. The method includes the following steps: collecting rock cuttings samples; preprocessing the rock cuttings samples; preparing rock cuttings thin sections; scanning the rock cuttings thin sections using a mineral quantitative analysis instrument to obtain mineral composition and distribution structure maps; analyzing and calculating reservoir performance parameters to determine the location of geological sweet spots; simulating and calculating rock mechanical parameters to determine the location of engineering sweet spots; and comprehensive sweet spot identification. This invention provides a method for rapid comprehensive sweet spot identification based on rock cuttings samples. By directly performing scanning electron microscopy imaging and simulation on rock cuttings samples obtained in the field, and determining the mineral composition and distribution structure of the samples, it can quickly and accurately obtain reservoir performance and rock mechanical parameters, thereby identifying geological and engineering sweet spots in complex or tight reservoirs. This saves on-site decision-making time, significantly reduces decision-making costs, and improves economic efficiency.

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