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中文摘要：
长沙岭构造带是酒东盆地重要的油气勘探区,构造带内普遍存在异常高压。提出了一种基于单点假设的三维地层压力计算方法,能够利用三维层速度数据准确计算三维地层压力,并运用该方法对长沙岭构造带的三维地层压力进行计算分析。首先建立了构造带内几口重点探井的单井地层压力剖面,确定了合适的模型参数;其次对构造带的三维地震资料进行反演,获得了该区域的三维层速度数据;然后根据三维地层压力计算方法编制了相应的计算机程序,计算了长沙岭构造带的三维地层压力;最后结合计算的三维地层压力数据,对长沙岭构造带地层压力分布规律进行了系统分析。分析结果符合地层实际。
英文摘要：
Changshaling Structural Belt is an important oil and gas exploration area in Jiudong Basin,and abnormal high pressure is universal in the zone.The paper proposes a new three-dimensional（3D）pore pressure calculation method based on single point hypothesis,which can use 3D interval velocity data to estimate 3D pore pressure.The novel method was applied to the 3D pore pressure calculation and analysis of Changshaling Structural Belt.Firstly,the pore pressure profile and model parameters of several key exploratory wells were established.Secondly,the 3D interval velocity data of the structural belt was obtained by seismic inversion.Further,the computer program was developed,and it was used to calculate the 3D pore pressure of Changshaling Structural Belt.Finally,with the 3D pressure results of Changshaling Structural Belt,the pore pressure distribution of this zone was systematically analyzed,with positive results.
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