三维气藏预测描述技术在陈家庄凸起天然气勘探中的应用

The Application of the Technology of Prediction and Description of Three Dimensional Gas Reservoir in the Prospect for Natural Gas in Chenjiazhuang Swell

三维气藏预测描述技术是建立在亮点技术基础之上,结合精细地质研究,综合应用AVO、反射波多参数提取与识别、亮点分析、三维可视化等技术来识别含气储层,从而描述气藏展布。该技术突破了以往应用二维资料描述的孤立豆状气藏的局限,展现了气藏在三维空间的立体分布。在陈家庄凸起勘探中应用了该技术,取得了较好的效果,钻井成功率达96%,较以往提高了12%,完钻的24口井共钻遇气层30层110.2m,年生产能力达20×104m3/d。

The technology of prediction and description of three dimensional gas reservoir, based on the technology of bright spot, including accurate geological research, applying the technology of AVO, multi-parameter extraction and identification of reflection wave, the analysis of bright spot and three dimensional visibility to identify the gas-bearing bed, describe the expanding of the gas reservoir. The technology has made more progress than in the past using the two- dimension seismic data to describe the gas reservoir that was isolated and pisolitic so that the distribution of the gas reservoir in three- dimension is showed. It has also made good application effect in Chenjiazhuang Swell because the success ratio is 96%, that has raised about 12% than the past. There are 24 drilled wells which have found 30 layers and 110.2 meters gas-bearing formation and can produce about 20×10^4m^3/d.