【摘要】 水平井的井筒持水率是产出剖面测井解释中的关键参数，如何准确获取和计算水平井井筒持水率对海上油田水平井动态评价、稳油控水尤为重要。通过油水两相物理模拟实验，明确阵列电容持水率计对不同流型的适用性，针对水平井典型分层流提出面积平均法和微元积分法计算井筒持水率。该持水率与实验真实井筒持水率的误差分析表明，考虑仪器截面积的微元积分法计算的井筒持水率精度更高。在不同含水率条件下，其计算的井筒持水率相对误差均小于9%,满足现场应用的精度需求。经过现场测井资料对比分析，微元积分法计算的持水率与剩余油饱和度测井的含水饱和度解释结论相互印证出水层位。微元积分法对海上油田的生产作业具有良好的适用性和应用价值。更多还原

【Abstract】 The water holdup of horizontal well is the key parameter in the production profile log interpretation. How to accurately obtain and calculate the water holdup of horizontal well is particularly important for the dynamic evaluation of horizontal wells in offshore oilfields and for stabilizing oil production and controlling water. The oil-water two-phase flow physical simulation experiment is adopted for capacitance array tool(CAT)to clarify the applicability of the instrument to different flow patterns. For typical stratified flow in horizontal wells, area average method and differential integration method are proposed to calculate wellbore water holdup. The error analysis of the calculated water holdup and the actual water holdup in wellbore shows that the precision of the wellbore water holdup calculated by the differential integration method considering the cross-section area of the instrument is higher. Under different water cut conditions, the relative error of wellbore water holdup is less than 9%, which meets the precision requirement of field application. Through the field logging data comparison and analysis, the water holdup calculated by the differential integration method and the water saturation interpretation conclusion of the remaining oil saturation logging mutually confirm the water-producing layer. The differential integration method has good applicability and application value for production operations in offshore oilfields.更多还原