Study of a new structural emulsion and its application in drilling fluids

IF 6 1区工程技术 Q2 ENERGY & FUELS

Petroleum Science Pub Date : 2025-01-01 DOI:10.1016/j.petsci.2024.06.019

Han-Xuan Song, Yun-Jin Wang, Yan Ye

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引用次数: 0

Abstract

Aiming at the leakage problem in the compact sandstone drilling of the Keziluoyi Formation in Southwest Tarim, Nano-core-emulsion was prepared by coating modified nano-SiO₂ with nano-emulsion, its particle size D₅₀ is about 100 nm, with good dispersion stability. When 0.8% Nano-core-emulsion is added to 5% bentonite slurry, the fluid loss can be reduced by 40%, and the filter cake thickness can be reduced by 84%. Using a Nano-core-emulsion to optimize the plugging performance of potassium polysulfonate drilling fluid can reduce the fluid loss of the drilling fluid by 52%, the resulting filter cake is dense and tough, and the thickness is reduced by 40%. Using the pressure conduction method to evaluate the plugging rate, the plugging rate of the drilling fluid of the Nano-core-emulsion on the core of the Keziluoyi Formation is 63.4%, which is 20.9% higher than that of the field drilling fluid. According to microscopic examination and CT scanning analysis, the material has the plugging characteristics of “inner rigid support + outer soft deformation” and has demonstrated good field application results.

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来源期刊

Petroleum Science 地学-地球化学与地球物理

CiteScore

7.70

自引率

16.10%

发文量

311

审稿时长

63 days

期刊介绍： Petroleum Science is the only English journal in China on petroleum science and technology that is intended for professionals engaged in petroleum science research and technical applications all over the world, as well as the managerial personnel of oil companies. It covers petroleum geology, petroleum geophysics, petroleum engineering, petrochemistry & chemical engineering, petroleum mechanics, and economic management. It aims to introduce the latest results in oil industry research in China, promote cooperation in petroleum science research between China and the rest of the world, and build a bridge for scientific communication between China and the world.