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发明公开
CN107779178A 一种无固相微泡沫钻井液及其制备方法 无效 - 撤回

一种无固相微泡沫钻井液及其制备方法
摘要：
本发明属于石油钻井技术领域，涉及一种无固相微泡沫钻井液及其制备方法。本发明无固相微泡沫钻井液，由以下重量份数的原料制备而成：碳酸钙（粒度：200-250目）50-60份、甲酸盐10-20份、水90-100份、增粘剂0.1-1份、降滤失剂3-8份、润滑防塌剂5-7份、流型调节剂1-5份、稳泡剂3-5份、发泡剂1-3份和自适应封堵剂1-2份。该发明无固相微泡沫钻井液具有高密度，强抑制性，无毒、易生物降解、保护储层能力强及制备方法操作简单等优点。
摘要（英）：

The invention belongs to the technical field of petroleum drilling, and relates to solid phase-free microfoam drilling fluid and a preparation method thereof. The solid phase-free microfoam drilling fluid is prepared from the following raw materials in parts by weight: 50-60 parts of calcium carbonate (particle sizes: 200-250 meshes), 10-20 parts of formate, 90-100 parts of water, 0.1-1 part of atackifier, 3-8 parts of a filtrate reducer, 5-7 parts of a lubricant anti-collapse agent, 1-5 parts of a flow pattern conditioning agent, 3-5 parts of a foam stabilizer, 1-3 parts of a foaming agent and 1-2 parts of a self-adapting blocking agent. The solid phase-free microfoam drilling fluid has the advantages of being high in density, strong in inhibitive ability, non-toxic, easy to biodegrade,strong in reservoir stratum protection capacity and simple in operation of a preparation method.

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