摘要
本文简要介绍了四川石油局开发的 HEG 前置液压裂酸化技术在使用于长庆油田时,HEG前置压裂液的室内实验、低温适应性及其在长庆油田冬季施工中的现场应用情况。
HEG fracturing pad fluids developed previously for Sichuan gas fields had been successfully used for frac-acidizing operations in winter in Changqing Oil Field.To investigate the applicability of the pad fluids in winter climate,the properties of gelling and gelled HEG solutions after natural and accelerated heating of freezed original gelling and cross-linking solutions with and without an antifreezer are studied and shown to be practically unchanged, particularly in the presence of the antifreezer.A special flacturing pad fluid is formulated. Its compatibility with acidizing fluids is satisfactory and only a little acid-insoluble gel is formed after contact with acidic solutions.The operations in 3 producing wells are described.
出处
《油田化学》
CAS
CSCD
北大核心
1989年第2期159-162,共4页
Oilfield Chemistry
