冀东 3号岛大斜度井钻井技术

冀东油田 3号人工岛四面环海，岛体面积 0.1475 km2。为加快油田开发速度，达到多部钻机同时作业互不影响的目的，采用了丛式井组布井方式，通过方案优化合理规避了上部井眼碰撞的风险。针对岛上大斜度井多 , 馆陶组有大段玄武岩易垮、可钻性差的特点，以 NP13-X1046井和 NP13-X1042井 2口井为例，进行了井身结构优选、钻井液体系研制、钻头优选和钻井技术措施的研究，并应用在实际钻井过程中，使岛上的大斜度井钻井能够顺利进行。

Drilling and completion technique for high angle deviated wells in 3rd island of Jidong field

The 3rd artificial island in Jidong field is surrounded by sea,with the area of 200 acres.To accelerate Oilfield development and achieve the objective of operation with multi rigs simultaneously without affecting each other,multiwell cluster is taken as the well deployment ways.Through optimizing plans,the upper wellbore collision is reasonably avoided.According to the characteristics of great number of high angle deviated wells and collapse tend of the formation with low drillability because of the big vertical section of basaltic layers in Guantao formation,the wellbore structure optimization,drilling fluid development,bid screening and drilling techniques were studied,taking Well NP13-X1046 and NP13-X1042 as examples.And it was applied in onsite drilling operations,which made the drilling process of high angle deviated wells successful in the island.