长深1井区火成岩岩性识别方法及应用

A Lithologic Identification Method of Igneous Rocks and Its Application in Changling Area

吉林油田40年的勘探史中一直以中浅层的砂泥岩为主。2005年CS1井在火成岩储层获得了日产46万m3高产天然气流。该区火成岩主要以酸性为主,另外可见少量的中、基性火成岩。火成岩储层孔隙类型主要是裂缝-孔隙型,储层流体以气为主。利用常规测井资料结合FMI成像测井资料,对岩性划分和天然气判别进行了初步的研究,并取得了较好的效果,为该区勘探开发提供测井技术支持奠定了基础。

Sand-mud stones in mid-depth have always been the main focus in Jilin oil field during its forty years' exploration history.In 2005,a high productive natural gas flow which was 46 ten-thousand cubic meter per day was from Igneous rock reservoir was obtained in CS1 well.The igneous rocks in that area are mainly composed of acidic rocks.Besides,there are a few neural and alkalescent rocks.The type of igneous rock reservoir is predominantly fissure-pore and the reservoir fluid is mostly gas.Making use of conventional logging data together with FMI imaging statistics,some primary research has been done on lithology classification and natural gas judgement,which provides a solid foundation for the logging technical support of exploration and development.