After drilling the upper intervals with gas/air, water base muds were used to drill thelower parts of the holes, leading to a series downhole problems such as hole instability and mud losses.
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- 分析了氣體鉆進(jìn)后頂替鉆井液初期容易發(fā)生井塌、井漏等復雜情況的原因,介紹了解決川東北地區氣體鉆進(jìn)后井壁失穩的鉆井液技術(shù)對策、技術(shù)方案及防止井壁失穩的鉆井液工藝技術(shù)。
