塔河油田钻井完井技术进步与展望

塔河油田缝洞型碳酸盐岩油藏具有油藏埋藏深、温度高、压力高和普遍含H₂S等特点，钻井过程中存在井漏、缩径、井塌、钻井周期长和井控风险大等技术难题，为此开展了钻井完井技术攻关与实践，历经安全成井、优快钻井和高效钻井等3个技术阶段，形成了以井身结构优化和优快钻井技术为核心的深井超深井钻井完井技术，为塔河油田快速上产提供了有力支持，也促进了中国石化深井超深井钻井完井技术的进步。近年来，随着塔河油田勘探开发转向深层和外围，钻井完井的难度更大，更加需要以深部油气藏效益开发和超深井安全高效钻井为核心开展技术攻关与试验，以满足深部油气藏高效开发的需求，并推动中国石化超深井钻井完井技术持续进步。 

Progress and Outlook on Drilling and Completion Technologies in the Tahe Oilfield

The fracture-cavity carbonate reservoir in the Tahe Oilfield possesses the characteristics of deep burial depth, high temperature, high pressure and the presence of H2S. Aiming at the challenges such as well leakage, hole diameter shrinkage, well collapse, long drilling period and high well control risks in the drilling process, technical researches and practices on drilling and completion were carried out. Through three stages of development, including safe well construction, rapid and excellent drilling, and high-efficiency drilling stages, the casing program optimization and rapid/excellent drilling-oriented drilling and completion matching technologies were developed, which not only provides strong support for the rapid production of Tahe Oilfield, but also promotes the drilling and completion technical advancement of Sinopec’s deep/ultra-deep wells. Currently, the exploration and development of Tahe Oilfield have turned to the deep and peripheral reservoirs, where the drilling and completion are more difficult, and it is necessary to carry out petroleum engineering technical research and test on the basis of the benefit development of deep oil and gas reservoirs as well as the safe and efficient drilling of ultra-deep wells, to satisfy the high efficient development of deep reservoirs in the Tahe Oilfield, and to promote the drilling and completion technical advancement of Sinopec's extra-deep wells.