摘要
大牛地气田水平井钻井中,由于A点前井眼尺寸较大,二叠系石千峰至下石盒子组泥岩普遍存在易水化膨胀、剥落、掉块、垮塌现象,处理复杂情况导致钻井周期长。经过2口水平井的钻井实践,摸索出了适合A点前的钾铵基聚磺钻井液体系,减少了井下复杂情况,提高了钻井效率,缩短了A点前的钻井周期,从而提高了该工区钻进水平井的综合效益。
In drilling of Daniudi gas field, hydrating swelling, spalling, block-falling and collapsing were the common phenomenon in the mudstone of Permian Shiqianfeng formation to lower Shihezi formation, which led to long drilling period. Potassium-ammonium polysulfonate drilling fluid system was found out based on the drilling experience of 2 horizontal wells, with which drilling efficiency was improved.
出处
《探矿工程（岩土钻掘工程）》
2009年第8期31-33,36,共4页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
水平井
“双保”天然高分子钻井液
钾铵基聚磺钻井液
大牛地气田
horizontal well
natural polymer drilling fluid for both oil/gas reservoir protection
potassium-ammonium poly-sulfonate drilling fluid
Daniudi gas field
