Prediction of Favorable Reservoir in Qixia Formation of Lower Permian in Huangqiao Area, Lower Yangzi Basin
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摘要:
黄桥地区是下扬子区比较活跃的油气勘探区，前期工作主要寻找构造油气藏，虽有成果，但均未成规模。随着上扬子地区礁滩相气田的突破，生物滩为油气勘探的重要相带。在江苏黄桥地区多口钻井发现大量的生物滩指向特征，证明黄桥地区有生物滩发育。结合区域地质情况，以沉积相分析为依托，测井地震为主要技术手段，通过黄桥地区生物滩体测井响应特征、地震反射和地震属性分析，确立一套黄桥地区生物滩预测方法。刻画出生物滩在平面上的分布规律，并结合岩溶分布，指出黄桥地区栖霞组有利储层分布区。
Abstract:The Huangqiao area is a selected area with relatively active oil and gas exploration in the lower Yangtze Basin. The research work mainly focused on structural traps in the early stage. It was successful in some sense, but the findings were not on the scale as expected.With the breakthrough of exploration in carbonate deposits, the facies of organic bank became an important target for oil and gas hunting.The Huangqiao area has been proved by drilling data a place with well developed organic banks.Based on regional geological data, studies were contributed to the spatial distribution of organic banks. Integrated approaches, such as sedimentary facies, logging, and seismic attributes are adopted. In this paper, together with the study of karst geology, we presented the distribution pattern of organic banks as favorable reservoirs of the Qixia Formation in the Huangqiao area.
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Key words:
- Huangqiao Area /
- Qixia Formation /
- seismic facies /
- organic bank /
- favorable reservoir
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