BIO–OIL环保基液的研制与现场试验

Development and Field Test of a BIO-OIL Environmental Protection Base Fluid for Synthetics-Based Drilling Fluids

赵景芳 刘雪婧 耿铁

ZHAO Jingfang LIU Xuejing GENG Tie

中海油田服务股份有限公司，河北三河 065201

China Oilfield Services Limited, Sanhe, Hebei, 065201, China

为满足深水钻井环保要求，开发了一种用于合成基钻井液的环保基液BIO–OIL，对比了BIO–OIL基液与常用基液的基本物理化学性能、黏温特性、碳原子数分布、生物毒性和乳液微观流变性，用BIO–OIL基液配制了深水合成基钻井液及高温高压合成基钻井液，并评价了其性能。结果显示，BIO–OIL基液的基本性能满足现场需求，生物毒性符合一级海域排放要求，乳液流体类型与3#白油乳液流体类型相同，具有三维网状结构，可配制满足现场需求的深水合成基钻井液和高温高压合成基钻井液。用BIO–OIL基液配制的合成基钻井液在南海西部某区块3口井进行了现场试验，结果表明，该钻井液流变性能稳定，携岩性能强，井眼清洁效果好。研究表明，BIO–OIL基液是一种可用于合成基钻井液的环保基液，用其配制的合成基钻井液的性能满足深水钻井需求。

In order to meet environmental protection requirements for deepwater drilling, an environmently friendly BIO-OIL base fluid was developed for synthetic based drilling fluid. The study compared the BIO-OIL base fluid with commonly used base fluids and examined their basic physical and chemical properties, viscosity temperature characteristics, carbon atom number distribution, biotoxicity, and micro-emulsion rheology. These studies studied the BIO-OIL based deepwater synthetic based drilling fluid and HTHP synthetic base drilling fluid and evaluated their performances. The results showed that the basic performance of BIO-OIL could satisfy minimum requirements for field application, while also satisfying the requirements of Class I sea discharge bio-toxicity level requirements. The type of emulsion fluid is the same as that of 3# white oil emulsion, with the 3D network structure, and it has the advantage that it can be made into deepwater synthetic based drilling fluid and HTHP synthetic based drilling fluid and it meets operational requirements. The BIO-OIL based synthetic drilling fluids have been tested in three wells in western block of South China Sea. Their rheological properties were stable, its cuttings carrying performance was strong, and it demonstrated good wellbore cleaning effect. Studies indicated that BIO-OIL can be classified as an environment friendly base fluid, which also meets operational standards for synthetic based drilling fluids.

中国海洋石油总公司创新基金项目“环保零伤害合成基钻井液整体解决方案”（编号：YHB17YF013）部分研究成果

https://doi.org/10.11911/syztjs.2019072