准噶尔盆地中拐凸起火山岩储集层裂缝综合评价  

Comprehensive Evaluation of Fractures in Volcanic Reservoirs of Zhongguai Swell,Junggar Basin

作　　者：范存辉 顿雅杭 张玮 李莲庆 邓毅 李治 FAN Cunhui;DUN Yahang;ZHANG Wei;LI Lianqing;DENG Yi;LI Zhi(Southwest Petroleum University,Sichuan Key Laboratory of Natural Gas Geology,Chengdu,Sichuan 610500, China;Southwest Petroleum University,School of Geoscience and Technology, Chengdu,Sichuan 610500, China;Kuqa Oil and Gas Development Department, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China)

机构地区：[1]西南石油大学地球科学与技术学院天然气地质四川省重点实验室,成都610500 [2]中国石油塔里木油田分公司库车油气开发部,新疆库尔勒841000

出　　处：《新疆石油地质》2017年第6期693-700,共8页Xinjiang Petroleum Geology

基　　金：天然气地质四川省重点实验室开放基金(2016trqdz01)

摘　　要：准噶尔盆地西北缘中拐凸起石炭系火山岩储集层中裂缝发育,为查明裂缝分布规律及其对油气运移、聚集的影响,运用岩心、薄片、测井和分析化验等资料,对裂缝特征及控制因素进行研究,并利用测井技术、岩石破裂程度理论及地震检测等手段开展了裂缝综合评价。研究表明,中拐凸起石炭系火山岩储集层以构造成因的高角度剪切缝和直立缝为主,多为半充填或未充填,裂缝有效性较好,裂缝发育程度主要受岩性、构造位置以及风化淋虑作用的控制,发育方位呈近东西向、北西—南东向、北东—南西向和南北向。火山岩储集层裂缝主要分布于中拐凸起中部、东斜坡和五八区。最终结合火山岩储集层油气富集规律和勘探实际,指出了下一步勘探有利目标区为中拐凸起中部和五八区。Fractures are developed in the Carboniferous volcanic reservoir of Zhongguai swell in the northwestern margin of Junggar basin.To identify fracture distribution and its influence on hydrocarnon migration and accumulation,the paper studies fracture characteristics and their controlling factors based on the data of core,thin section,logging and lab analysis,and performs comprehensive fracture evaluation by using logging technology,rock failure degree theory and seismic detection.The study shows that the Carboniferous volcanic reservoir in Zhongguai swell is dominated by high-angle structural shear fractures and vertical fractures,both of which are mostly semi-filling or unfilling.The degree of the fracture dvelopment is mainly controlled by lithology,structure location and weathering and leaching,whose azimuth mainly exhibits near EW,NW-SE,NE-SWand SN directions.The fractures in the volcanic reservoir are mainly distributed in the center and eastern slope Zhongguai swell,and District Wuba.Finally,combining hydrocarbon accumulation rules in the volcanic reservoir with the actual exploration,the paper indicates that the middle part of Zhongguai swell and District Wuba should be the favorable target areas for next exploration.

关 键 词：准噶尔盆地 中拐凸起 石炭系 火山岩储集层 裂缝特征 综合评价 

分 类 号：TE221.222[石油与天然气工程—油气井工程]