渤海LD油田低阻油层潜力识别研究与实践
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摘要
低阻油层的潜力识别一直是国内外油田开发人员亟待解决的难题之一。以渤海LD油田为例,基于静态油水界面存在矛盾、数值模拟与生产实际不匹配、有限资料下难以落实油层电阻率测井下限值等问题,通过测井响应特征、动静态资料、数值模拟研究相结合开展了低阻油层潜力识别研究,认为存在油水界面下推潜力。实践证明,该油田上返成功落实了低阻油层,新增探明石油地质储量近430×10~4m~3,馆陶组和东营组油层测井解释电阻率下限分别下降到4Ω·m和5Ω·m,对渤海类似油田低阻油层的探索研究具有很好的借鉴意义。
The potential identification of low resistivity reservoir has been one of the most urgent problems to besolved for oilfield developers at home and abroad. Taking Bohai LD oilfield as an example, due to the contradic-tion between the static oil and water interface, mismatch of numerical simulation and actual production, lowerlimit of the reservoir resistivity logging that is difficult to be implemented under limited data, through the combi-nation of logging response characteristics, dynamic and static data, numerical simulation, low resistivity reservoirpotential identification study shows that there is the existence of oil-water interface under the push potential. Itis proved that the low resistivity reservoir is successfully implemented in the oilfield, and the new proven oil re-serves is of nearly 4.3 million cubic meter, the lower limit of the reservoir resistivity in Guantao and Dongying for-mation are respectively reduced to 4Ω m and 5Ω m. It has a great significance for studying low resistivity reser-voir in the simliar oilfield of Bohai area.
The potential identification of low resistivity reservoir has been one of the most urgent problems to besolved for oilfield developers at home and abroad. Taking Bohai LD oilfield as an example, due to the contradic-tion between the static oil and water interface, mismatch of numerical simulation and actual production, lowerlimit of the reservoir resistivity logging that is difficult to be implemented under limited data, through the combi-nation of logging response characteristics, dynamic and static data, numerical simulation, low resistivity reservoirpotential identification study shows that there is the existence of oil-water interface under the push potential. Itis proved that the low resistivity reservoir is successfully implemented in the oilfield, and the new proven oil re-serves is of nearly 4.3 million cubic meter, the lower limit of the reservoir resistivity in Guantao and Dongying for-mation are respectively reduced to 4Ω m and 5Ω m. It has a great significance for studying low resistivity reser-voir in the simliar oilfield of Bohai area.
引文
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[4]谢青,王建民.鄂尔多斯盆地志丹、安塞地区长6低阻油层成因机理及识别方法[J].岩性油气藏,2013,(03):106-111.
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[2]吴金龙,孙建孟,耿生臣,等.低电阻率油气层宏观地质影响因素与微观机理的匹配关系[J].测井技术,2005,(05):74-77.
[3]刘欢.H区块低阻储层识别与评价方法研究[D].武汉:长江大学,2013.
[4]谢青,王建民.鄂尔多斯盆地志丹、安塞地区长6低阻油层成因机理及识别方法[J].岩性油气藏,2013,(03):106-111.
[5]于红岩,李洪奇,郭兵,等.基于成因机理的低阻油层精细评价方法[J].吉林大学学报(地球科学版),2012,(02):335-343.
[6]杨春梅,周灿灿,程相志.低电阻率油层成因机理分析及有利区预测[J].石油勘探与开发,2008,35(5):600-605.