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天然气与石油 NATURAL GAS AND OIL
2017年8月
生产动态确定底水油藏油井水淹
范围的新方法
章威龙明季军许亚南张吉磊中海石油（中国)有限公司天津分公司，天津300452
摘要：底水油藏开采过程中油井会因底水锥形上升造成水流，研究油井的水湾范围对底水油蔗挖潜十分重要。利用油井的实际生产数据回归两型水驱特征曲线进而求取油并不同含水率时的波及系数，同时将锥体范图等效表征为几何体，通过数学计算，得到底水油藏直并和水平井的水滤范国计算公式。该公式体现了油并的动态生产特征，较之常规静态法求取的水流范国更能真实地反应油并实际情况。以落海0油某砂体为例验证，利用该公式计算的结果准确反映了该砂体的剩余油分布状况，与数值模报结果一致。
关键词：底水油藏；水滤范围；水驱特征曲线；波及系数；剩余油 DOI:10. 3969/ j. issn. 1006 5539. 2017. 04. 012
ANewMethod for DeterminingtheFloodingRange of OilWellin
Bottom-WaterReservoirBased onDynamic Production
Zhang Wei,Long Ming,Li Jun,Xu Yanan,Zhang Jilei Tianjin Branch of CNOOC Ltd. , Tianjin, 300452, China
Abstract : When the bottom-water reservoir is developing, the well will be flooding by the rising cone of the bottom water. The research of flooding range is of great significance for developing remaining oil in bottom water reservoir. This paper uses the actual production data of oil well to return the C-type water flooding characteristic curve; then, get the sweep efficiency of different water cut according to the regression result; on the other hand, the cone range is equivalently represented as a geometry ; finally, the flooding range formula of vertical well and horizontal well in bottom-water reservoir is obtained by mathematical caleulation. This formula reflects the dynamic production characteristics of oil well, compared with the conventional static method, it is more real responsive to the flooding range of oil well. Taking a sand of the Bohai oilfield Q as an example, the results calculated by this formula accurately reflect the residual oil distribution of the sand, which is consistent with the numerical simulation results.
Keywords : Bottom-water reservoir; Flooding range; Water flooding characteristic curve; Sweep
efficiency; Remaining oil 收稿日期：2017-01-12
基金项目：国家科技重大专项"海上稠油油田高效开发示范工程（二期）"（2011ZX05057）作者简介：章威(1986一)，男，天津人，工程师，硕士，主要从事油气田开发工作，
万方数据