北海油田应用DAPC-CTD体系进行侧钻作业。DAPC体系由三个主要部分组成:电子自动高压泥浆泵、自动节流管汇和计算机控制系统。利用此项技术可有效开发老油田的难采油藏,降低侧钻过程中地层的过平衡压力;采用低密度油基泥浆体系,可降低井眼摩阻,有效防止卡钻,有利于保持井眼的稳定性。DAPC-CTD体系在北海老油田已得到证明,是一项开发老油田剩余油的有效技术。 North Sea Oilfield DAPC-CTD system for sidetrack operations. DAPC system consists of three main components: electronic automatic high pressure mud pump, automatic throttle manifold and computer control system. This technology can effectively exploit difficult oil reservoirs in old oilfields and reduce the overbalanced pressure of strata in the sidetracking process. The low-density oil-based mud system can reduce wellbore friction, effectively prevent sticking, and is good for holding wells Eye stability. The DAPC-CTD system has been demonstrated in the old Beihai oilfield and is an effective technique for developing residual oil in old fields.