【摘要】 SLG地区天然气资源量丰富,是我国油气增储上产的重要区域,利用叠后地震描述进行储层预测时多解性很强,本文针对SLG地区盒8段储层,充分利用了叠前地震资料信息丰富的特点,以AVO模型正演技术为基础,研究含气砂岩的地球物理响应特征,利用弹性波阻抗反演和叠前同步反演等技术,开展了叠前储层预测和含气性检测,形成了叠前地震描述技术系列,实际钻探结果表明,预测结果的精度较高,表明利用叠前地震描述技术进行SLG地区盒8段储层预测是可行的。更多还原

【Abstract】 Natural gas source of the area SLG is abundant.Moreover it is an important area for increasing reserves and yield.Reservoir prediction has strong ambiguity with poststack seismic descriptive technology.In this paper,for the reservoir of the eighth member of Shihezi Formation,prestack seismic data which include abundant information can be taken full advantage.On the base of AVO model forward calculation,geophysical response character of gas sand is studied.We use many technologies such as elastic impedance inversion and P & S instantaneous inversion to make the prestack reservoir prediction and fluid detection.Then a series of prestack seismic descriptive technologies come into being.The practical drilling results reveal that predictive precision is high.In another word,reservoir prediction is feasible with prestack seismic descriptive technology for the reservoir of the eighth member of the Shihezi Formation in SLG.更多还原