摘要
准噶尔盆地车排子凸起西翼的钻井于石炭系火山碎屑岩地层喜获工业油流,展示了火山碎屑岩地层良好的勘探前景。储层非均质性强、油气储运介质特征及分布不明确限制了油气的产量。为探究车排子凸起西翼石炭系火山碎屑岩裂缝特征,综合利用岩心、录井、薄片、测井等资料,对研究区岩性和构造重新鉴别和解释,对车排子地区石炭纪地层储集空间进行分析,结果显示火山碎屑岩储集空间类型以裂缝为主,通过岩心和薄片的观察分析总结得出本区裂缝的发育特征。根据测井资料重新计算裂缝发育参数,运用PDSview软件对裂缝进行量化表征,给出了5个单井裂缝发育程度的评价级别,并分析了裂缝在横向和纵向上的分布特征。最后根据裂缝发育特征总结裂缝发育的影响因素,认为岩性、构造运动和风化淋滤作用共同决定了本区裂缝的发育。
Drilling in the west limb of the Chepaizi salient of the Junggar basin shows industrial oil in the Carboniferous volcanic clastic formation,which demonstrates good prospects for volcanic clastic formations.Heterogeneous reservoirs,unclear characteristics,and distribution of oil storage and transportation media limit oil and gas production.The lithology and structure of the study area were identified and analyzed through cores,thin slices,drilling,logging,and seismic data.The Carboniferous stratigraphic reservoir space in the Chepaizi area was analyzed.The results show that the main type of pyroclastic rock storage space is the fracture,and the development characteristics of the fracture in this area are summarized.Then the fracture development parameters are recalculated according to the logging data,and the cracks are quantitatively characterized by PDSview.Five evaluation grades of the fracture development degree of single wells are given,and the distribution characteristics of the fractures in the longitudinal and lateral directions are analyzed.Finally,according to the fracture development characteristics,the influencing factors of fracture development are summarized,and it is considered that lithology,tectonic movement and weathering leaching process determine the development of fractures in this area.
作者
闫明明
李守军
杨思通
张祥玉
耿耿
张硕
王卓
YAN Mingming;LI Shoujun;YANG Sitong;ZHANG Xiangyu;GENG Geng;ZHANG Shuo;WANG Zhuo(College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China;Shandong Lubi Construction Materials Co. , Ltd., Laiwu, Shandong 271107, China)
出处
《中国科技论文》
CAS
北大核心
2020年第5期547-555,共9页
China Sciencepaper
基金
国家自然科学基金资助项目(41602135)。
关键词
车排子西翼
火山碎屑岩
石炭系
裂缝特征
测井识别
Chepaizi west limb
pyroclastic rock
Carboniferous
fracture characteristic
logging identification
