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针对张店油田的地层、岩性特征及大斜度多目标定向井对钻井液的特殊要求,优选了一套适应不同井段的钻井完井液体系。上部直井段使用钾盐聚合物钻井液体系,大斜度井段使用钾盐聚磺正电胶混油钻井液体系,目的层段使用钾盐聚磺正电胶混油屏蔽暂堵钻井完井液体系,并制定了相应的维护处理措施。实钻表明,该套钻井完井液体系能满足钻井施工要求,达到了保护油气层的目的。
According to the stratigraphy and lithology characteristics of Zhangdian Oilfield and the special requirements of drilling fluids for high-inclination and multi-target directional well, a set of drilling and completion fluid system suitable for different well sections is optimized. Potassium salt polymer drilling fluid system is used in the upper vertical well, potassium salt polysulfone positive rubber mixed oil drilling fluid system is used in the high slope well, potassium salt polysulfo-positive rubber mixed oil shield temporary plugging drilling completion Liquid system, and developed a corresponding maintenance measures. Real drilling shows that the drilling and completion fluid system can meet the requirements of drilling construction and achieve the purpose of protecting oil and gas layers.