Volcanic detritus are dominant in those composing the reservoir greywacke in the Songliao Basin, and their content can be up to 60%.
松辽盆地深层储层砂岩中岩屑成分主要为火山岩岩屑,体积分数最高可达60%。Finally, the variation law of average roughness angle of marble specimen and shear creep model parameters is analyzed.
最后分析各大理岩岩样的平均粗糙角与剪切蠕变模型参数的变化规律。Accurate identification of volcanic rocks in volcanic reservoir description and evaluation is an important basis.
火山岩岩性的准确识别是火山岩储层描述与评价的基础。The principal controlling factors in reservoir are sedimentation, diagenesis, lithology of mother rock and structure action.
沉积、成岩作用、母岩岩性和构造断裂活动是控制储层物性的主要因素。This idea and method may also be helpful to evaluation of igneous rocks with other types.
识别方法和技术思路对其它类型火成岩岩性识别与评价具有借鉴意义。So, it is an effective way of lithologic identification to combine ECS with routine log and image log.
因此,将ECS与常规测井、成像测井相结合,是解决火山岩岩性识别难的有效途径。The ultrabasic rocks form a complex of large tectonic slices with intercalated slices of Sebakwian sedimentary rocks.
超基性岩与塞巴奎沉积岩岩片相间构成一巨大的构造岩片的杂岩体。Igneous lithology is the base of dividing lithofacies and studying on accumulation space types and growth history.
火山岩岩性是划分岩相、研究储集空间类型及发育规律的基础。The result shows that the reservoir rocks are mainly composed of crystal grain dolomite and particle dolomite.
结果表明:该套地层的储集岩岩性以晶粒白云岩为主,其次为颗粒白云岩;