CAJ | 학술논문

针对深水钻井中遇到的地层压力与破裂压力余量过窄的问题，Conoco和Hydril公司共同研发了深水双梯度海底钻井液举升钻井技术（Subsea Mudlift Drilling，简称SMD）。基于SMD钻井系统的工艺原理，结合钻井水力学基础知识，建立了一种适合SMD钻井系统的水力参数计算模型，以最大钻头水功率为目标进行SMD钻井系统水力参数优化设计。对国外发表文献中的实钻数据进行验证，该水力参数计算模型得到的各管汇压耗与实际压耗误差在5%以内，计算结果表明该水力参数计算模型具有较高的精度。
침대심수찬정중우도적지층압력여파렬압력여량과착적문제，Conoco화Hydril공사공동연발료심수쌍제도해저찬정액거승찬정기술（Subsea Mudlift Drilling，간칭SMD）。기우SMD찬정계통적공예원리，결합찬정수역학기출지식，건립료일충괄합SMD찬정계통적수력삼수계산모형，이최대찬두수공솔위목표진행SMD찬정계통수력삼수우화설계。대국외발표문헌중적실찬수거진행험증，해수력삼수계산모형득도적각관회압모여실제압모오차재5%이내，계산결과표명해수력삼수계산모형구유교고적정도。
With regard to the over-narrow margin of formation pressure and fracture pressure in the deepwater drilling, Conoco Company and Hydril Company have jointly researched and developed the lift drilling technology of deepwater dual gradient subsea drilling lfuid (Subsea Mudlift Drilling, hereinafter referred to as SMD). Based on the process principle of SMD drilling system and basic knowledge of drilling hydraulics, a hydraulic parameter calculation model suitable for the SMD drilling system has been established, and the optimization design of hydraulic parameter of SMD drilling system is done by targeting the maximum drill bit hydraulic power. The actual drilling data in the published literature overseas is veriifed. In the hydraulic parameter calculation model, the error between manifold pressure loss and actual pressure loss is within 6%, and the total error of circulating pressure loss is 4.3%. According to the calculation results, the hydraulic parameter calculation model has relatively high precision. The optimization calculation method of hy-draulic parameter has important guiding signiifcances for the deepwater drilling in China.