稠油底水油藏剩余油分布研究及水平井开发调整

Research of Remain Oil Distribution and Horizontal Well Development Adjustment for Heavy Oil Reservoirs with Bottom WaterATER

秦皇岛32—6油田西区NmⅡ1砂体为稠油底水油藏,经过5年多的定向井开发目前已经进入高含水期开发阶段。首先通过生产动态和生产测井分析油层水淹规律,然后进行精细油藏描述,建立油藏数值模拟模型,研究剩余油分布规律。在搞清油层中剩余油分布规律的基础上,进行了先导试验水平井,先导试验井产量高、无水采油期长,证明以上剩余油分布研究是正确的。最后提出水平井整体加密挖掘NmⅡ1砂体稠油底水油藏井间剩余油的开发调整策略。实际生产证明,NmⅡ1砂体水平井开发调整是成功的,为同类油藏的开发调整提供了生产经验。

QHD32-6 oilfield west area NmⅡ1 sand is heavy oil reservoir with bottom water.NmⅡ1 sand now comes into high water cut period after 5 years development.Firstly,NmⅡ1 sand water conning law is analyzed through production performance and production logging.And then remain oil distribution is researched after description of reservoir and reservoir simulation.Third,the pilot horizontal well is drilled at remain oil concentration area,and the pilot horizontal well is high production and low water cut.Test production show research result of remain oil distribution is veritable.Lastly the development program of horizontal wells infill NmⅡ1 sand wholeness is proposed.The production history shows NmⅡ1 sand development adjustment is successful,and provides production experience for same reservoirs.