作　　者： ; ; ; ; ; ;

机构地区： 北京大学地球与空间科学学院石油与天然气研究中心

出　　处： 《岩石学报》 2010年第1期291-301,共11页

摘　　要： 准噶尔盆地东部克拉美丽气田石炭系火山岩岩石类型复杂多样,且同一岩性由于结构、构造和成分的差异,电性特征差异亦较大,岩性识别困难。本文通过对该区14口井取心段岩电关系研究,认为自然伽马、电阻率、密度三种曲线岩性特征响应明显;电阻率、中子、密度、声波四条曲线对火山岩岩石构造特征响应明显。并编制了岩性和岩石构造测井识别交会图版11张。进而利用电测资料识别出该区11种火山岩岩石类型:正长斑岩、二长斑岩、玄武岩、粗面岩、英安岩、流纹岩、霏细岩、沉凝灰岩、熔结凝灰岩、火山角砾岩和熔结火山角砾岩;识别出5种岩石构造类型:正长斑岩中气孔及块状构造和玄武岩中杏仁、碎裂及块状构造。通过本区12口钻井取心后验,测井识别结果与钻井岩心分析结果吻合良好,可作为地区性火山岩测井岩性、岩石构造识别模式。 The complex lithological compositions in of Carboniferous volcanic rocks of in the Kelameili gas field,which is located at the bottom of the Junggar basin of Xinjiang,account for itstheir complex electric features.Meanwhile,electric features of the same lithology also differ from one another due to their differences in structures,conformations and compositions of the rock.Through conducting a comprehensive research on the rock-electric relations on rock cores from fourteen well bores,This this paper believes that (1) logs of natural gamma,resistivity and density show high sensitivity on to lithological recognition on volcanic rocks,and(2) logs of resistivity,neutron,density and sound wave reveal high sensitivity on to its conformational recognition after.conducting a comprehensive research on the rock-electric relations on rock cores from fourteen well bores.We By makingde eleven cross plots identifying for lithology and the structure.By this means,we can recognized 11 types of volcanic rocks,namely orthophyre,ivernite, basalt,trachyte,dacite,rhyolite,felsite,sedimentary tuff,ignimbrite,volcanic breccia,and flood volcanic breccia;,Furthermore, we can also identify 5 types of structures of rocks,namely the vesicular and massive structure of orthophyre and the amygdaloidal, cataclastic and massive structure of basalt.In comparison with the well-drilling and well-logging data from local twelve wells bores,the identification results are well consistent with the authentic lithology in the area.The paper established a rough lithological recognition model on volcanic rocks of the Kelameili Gas field.The well-drilling and well-logging data from local twelve wells bores proves that the identification results are well consistent with the authentic lithology in the area,and can be used to establish a rough lithological recognition model for volcanic rocks in the Kelameili gas field.

关 键 词： 准噶尔盆地 克拉美丽气田 火山岩 岩电关系 交会图

领　　域： [天文地球] [天文地球]