CAJ | 학술논문

采用τ-P变换研究各向同性纵波反射系数的振幅特性,通过分析纵波在τ-P域中的时差特性曲线信息,提出了一个和传统Shuey算法相似的新的二元数学模型,只需对目标反射层以及上中下三层进行τ-P域里的时差分析,而无须其他附加信息.结合模拟数据以及实际的测井数据,分别给出了详细的实验步骤及分析.实验结果证明此算法的反演结果和实际值吻合良好,可以应用于实际的工程分析.分析方法可以作为Shuey AVO的替代,同时具有相似的准确度,结果令人满意.
채용τ-P변환연구각향동성종파반사계수적진폭특성,통과분석종파재τ-P역중적시차특성곡선신식,제출료일개화전통Shuey산법상사적신적이원수학모형,지수대목표반사층이급상중하삼층진행τ-P역리적시차분석,이무수기타부가신식.결합모의수거이급실제적측정수거,분별급출료상세적실험보취급분석.실험결과증명차산법적반연결과화실제치문합량호,가이응용우실제적공정분석.분석방법가이작위Shuey AVO적체대,동시구유상사적준학도,결과령인만의.
An alternative method is proposed to analyze the moveout information(above and below)of the target horizon in the τ-p domain,and a new linearized reduced parameter AVO expression is derived to analyze the amplitude of isotropic compressional waves without loss of accuracy.It depends only on two free parameters and does not require extra prior parameter information.Experiment resuhs for both synthetic data and well data show that the proposed method gives similar accuracy as the conventional three-parameters linerized Shuey expressions,and it can be used for practical engineering analysis.