苏里格气田钻井清洁化生产配套技术

Oil Drilling & Production Technology(2019)

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Abstract
为满足苏里格气田钻井清洁化生产需求,研制了适合钻井液、钻屑不落地处理工艺的关键设备,形成了一整套钻井液不落地施工工艺及操作流程,有效避免了因钻井液泄露造成的环境污染;研发了一种天然大分子环保型钻井液,生物毒性EC50为17.4× 105 mg/L,无毒,BOD5/COD≥0.05,易生物降解,其他各项指标也达到环保要求,从源头上保障钻井液环保性能达标;研发了废弃钻井液固液分离及回用技术,现场推广应用400口井,缓解了苏里格生态脆弱地区环保压力和淡水资源短缺的压力.
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