摘要
ＫＬ—２井是塔里木盆地克拉苏构造山前构造的一口预探井，钻探过程中，盐膏层及高压气压易出现缩径、井涌、井漏及卡钻等复杂情况，采用聚磺氯化钾钻井液体系，密度控制在 １．７５～１．８０９／ｃｍ３和２．２０～２．４０ｇ／Ｃｍ３平衡地层压力，较好地解决了钻探过程中出现的各种复杂情况。
Well KL-2 is a wildcat well drilled in the predmont structure of Kelasu structure in Tarim basin. Complex situations such as undergauge, overflow, lost circulation and differential sticking are easy to occurs when drilling in salt-gypsum layers and overpressured gas layers.These problems are solved through using polysulfonate potassium chloride drilling fluid and keeping drilling fluid density at 1.75 to 1.80g/cm3 in halite intervals and at 2.20 to 2.40 g/cm3 in overpressured gas intervals to balance formation pressure.
出处
《河南石油》
2000年第5期38-40,62,共3页
Henan Petroleum
关键词
盐膏层
高密度
钻井液
预探井
油气田
salt-gypsum layer, high density drilling fluid, overflow, lost circulation, slilnho4
