“一趟钻”快速钻井技术在鲁克沁稠油油藏中的应用

Application of rapid drilling technique of “one trip drilling” in Lukeqin heavy oil reservoir

钱峰 肖华

QIAN Feng XIAO Hua

长江大学石油工程学院，湖北荆州　434023 吐哈油田工程技术处，新疆鄯善　838202 吐哈油田工程技术研究院，新疆鄯善　838202

Petroleum Engineering College of Yangtze University, Jingzhou 434023, China Engineering and Technology Department of PetroChina Tuha Oilfield Company, Shanshan 838202, China Petroleum Engineering Technology Research Institute, PetroChina Tuha Oilfield Company, Shanshan 838202, China

鲁克沁稠油油藏油层深、盐膏层发育，对井身质量要求高，原有的钻井工艺起下钻频繁，钻井时效低。在调研前期大量现场施工的基础上，分析了钻井井史资料，研究了提速配套技术，通过改变提速技术方案，设计优选了高效PDC钻头、高效井下动力钻具及采用优质配套的钻井液等措施，最终实现了二开“一趟钻”的目标。“一趟钻”快速钻井技术大幅度提高了鲁克沁稠油油藏的钻井速度，降低了钻井成本，有效地保护了油气层，为油田增储上产起到了较大的推动作用。

Lukeqin heavy oil reservoir is in great depth and developed with salt rocks, so the requirement for wellbore quality is high. Frequent tripping is the feature of the preexisting drilling process, and the drilling efficiency is low. Base on surveying a number of past field operations, the drilling history data is analyzed, and the matching speed raising technique is studied. The high efficient PDC bit and high efficiency BHA are designed and optimized, and the high quality matching drilling fluid is taken, to carry out the objective of two sections of drilling operations in one trip. The rapid drilling technique of one trip drilling improved greatly the drilling rate of Lukeqin heavy oil reservoir, and decreased the drilling cost. It effectively protected the reservoir, and played a great role in increasing oil reserve and production.