利用常规测井曲线定量预测裂缝型孔隙度  

Quantitative Prediction of Fractured Porosity by Using Conventional Logging Curves

作　　者：陈彦虎 胡俊 蒋龙聪 胡冬梅 

机构地区：[1]中国地质大学(北京),北京100083 [2]北京阳光杰科科技股份有限公司,北京100192 [3]北京中恒利华石油技术研究所,北京100101

出　　处：《特种油气藏》2017年第6期7-11,共5页Special Oil & Gas Reservoirs

基　　金：国家自然科学基金"页岩气储层甜点预测地球物理理论与方法研究"(41572134);国家科技重大专项"东海深层大型气田勘探评价技术"(2016ZX05027-002)

摘　　要：为利用常规测井曲线定量表征裂缝的发育程度,运用拓展的SPM软孔隙度模型,建立了适合页岩储层的岩石物理模型,并求取了裂缝型孔隙度曲线,通过FMI成像测井信息和岩心照片证实了裂缝型孔隙度结果的可靠性。研究认为:SPM软孔隙度模型更适合于致密页岩储层岩石物理建模;通过岩石物理图版建立了裂缝型孔隙度与纵波速度的关系,相比于硬孔隙和基质孔隙,裂缝型孔隙体积的增加能引起纵波速度的迅速下降,两者之间具有一定的相关性,可利用岩石物理图版实现裂缝型孔隙与速度的定量解释。该研究对页岩储层定量解释具有重要的意义,后续可进一步研究通过地震反演预测裂缝型孔隙的横向分布特征。In order to quantitatively describe fracture development degree though conventional logging curves, by u- sing extended SPM soft porosity model, establish the rock physics model for shale reservoir and obtain the fractured porosity curve, and the reliability of fractured porosity results is confirmed by FMI imaging logging data and core photographs. The research suggests that, SPM soft porosity model is more suitable for rock physics modeling of dense shale reservoir; the rock physics chart is used to establish the relationship between the fractured porosity and longitudinal wave velocity, and compared to hard pores and matrix pores, the increase of fractured porosity in vol- ume can cause rapid decline of the longitudinal wave velocity and there is a certain correlation between them, then the rock physics chart can be used to quantitatively interpret the fractured porosity and velocity. The study is of great significance for quantitative interpretation of shale reservoirs, and prediction of transverse distribution characteristics of fractured pores by seismic inversion can be further studied.

关 键 词：页岩气 岩石物理建模 SPM软孔隙度模型 裂缝型孔隙 定量解释 

分 类 号：TE122.1[石油与天然气工程—油气勘探]