Ecological Utilization and Development Trend of Environment-Friendly Drilling Fluid

Abstract

Abstract: Environmental issues are key problems to be solved urgently during oil and gas exploration and development,and minimizing the pollution by drilling fluid is a top priority among the solutions to the environmental pollution caused by oil and gas development. For a long time,the research of environment-friendly drilling fluid has focused on individual treatment agents. As a result,only the core chemicals are environment-friendly. It is hard to have a nontoxic drilling fluid system,and the progress to achieve this purpose is slow. However,the currently available toxicity assessment methods for drilling fluid are limited to unused product or its waste,ignoring the functions of drilling fluid waste in ecological restoration and utilization,and lacking effective tracking and evaluation means after the waste is disposed. Regarding the ecological restoration and utilization of drilling fluid,exploration is currently limited to some local fields only,restricted by fundamental mechanisms,environment-friendly drilling fluid technology and application environment. Therefore,it helps realize the comprehensive environment-friendly development and utilization of underground hydrocarbon resources and surface land resources to build a whole-link environmental protection mechanism (treatment agent - drilling fluid system - recycle - discard - ecological restoration and utilization),eliminate the disadvantages of traditional environment-friendly drilling fluid,and take the ecological restoration and utilization of saline-alkali land as breakthrough point.

Key words: drilling fluid, environmental protection, ecological utilization, saline-alkali land, evaluation method

摘要： 环保问题是当前油气资源勘探开发亟需解决的关键难题之一,而减少钻井液污染是解决油气勘探开发环境污染的重中之重。长期以来环保钻井液的研究主要集中在单一处理剂的范围内,仅实现了核心主剂环保,体系无毒性实现难度大、进展缓慢。当前钻井液毒性评价方法局限在使用前或废弃物环节,未考虑废弃钻井液的生态修复和利用功能,废弃物处理后也无有效跟踪评价手段。钻井液的生态修复和生态利用在现阶段受基础机理、环保钻井液技术、应用环境的限制,仅在局部领域上有探索。因此,构建处理剂-钻井液体系-重复利用-废弃-生态修复及利用的全环节环保机制,破除传统环保钻井液的弊病,以盐碱地生态修改和利用为突破点,有助于实现地下油气和地面土地资源的综合环保开发和利用。

关键词: 钻井液, 环境保护, 生态利用, 盐碱地, 评价方法

CLC Number:

TE258

YE Cheng, LU Tiemei, LIU Xiang, LIU Kecheng, YAO Xuyang, GONG Jiaqin. Ecological Utilization and Development Trend of Environment-Friendly Drilling Fluid[J]. Xinjiang Oil & Gas, 2021, 17(3): 25-29.

叶成, 鲁铁梅, 刘翔, 刘可成, 姚旭洋, 巩加芹. 环保钻井液的生态利用现状及发展趋势[J]. 新疆石油天然气, 2021, 17(3): 25-29.

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