利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN106010484A 一种强抑制聚醚醇钻井液 无效 - 驳回

一种强抑制聚醚醇钻井液
摘要：
本发明涉及油田开采技术领域的用于水敏性泥页岩地层的钻井作业的一种强抑制聚醚醇钻井液，包括以下重量配比的各组份：水100份，钠基膨润土4～6份；钻井液用聚胺抑制剂0.2～1份，钻井液用包被剂0.2～0.5份；钻井液用降滤失剂0.5～5份；钻井液用防塌剂1～6份；钻井液用聚醚醇1～5份；钻井液用封堵剂1～5份，钻井液用润滑剂3～8份。本发明的钻井液可以快速的对井壁地层实现强抑制和有效封堵并阻止滤液侵入地层。
摘要（英）：

The invention relates to the technical field of oilfield exploitation and discloses strong-inhibition polyether polyol drilling fluid used for a water-sensitive shale stratum. The drilling fluid is prepared from, by weight, 100 parts of water, 4-6 parts of sodium bentonite, 0.2-1 part of polyamine inhibitor for drilling fluid, 0.2-0.5 part of coating agent for drilling fluid, 0.5-5 parts of filtrate reducer for drilling fluid, 1-6 parts of anti-collapse agent for drilling fluid, 1-5 parts of polyether polyol for drilling fluid, 1-5 parts of blocking agent for drilling fluid and 3-8 parts of lubricating agent for drilling fluid. The drilling fluid can quickly achieve strong inhibition and effective blocking of a shaft wall stratum and prevents filtrate from invading into the stratum.

0/0