CAJ | 학술논문

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、声波四务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.
준갈이분지동부극랍미려기전석탄계화산암암석류형복잡다양,차동일암성유우결구、구조화성분적차이,전성특정차이역교대,암성식별곤난.본문통과대해구14구정취심단암전관계연구,인위자연가마、전조솔、밀도삼충곡선암성특정향응명현;전조솔、중자、밀도、성파사무곡선대화산암암석구조특정향응명현.병편제료암성화암석구조측정식별교회도판11장.진이이용전측자료식별출해구11충화산암암석류형:정장반암、이장반암、현무암、조면암、영안암、류문암、비세암、침응회암、용결응회암、화산각력암화용결화산각력암;식별출5충암석구조류형:정장반암중기공급괴상구조화현무암중행인、쇄렬급괴상구조.통과본구12구찬정취심후험,측정식별결과여찬정암심분석결과문합량호,가작위지구성화산암측정암성、암석구조식별모식.
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 iithology in the area, and can be used to establish a rough lithological recognition model for volcanic rocks in the Kelameili gas field.