西北地质2024，Vol.57Issue(2)：14-23,10.DOI:10.12401/j.nwg.2024004
克拉玛依油田K82井区上乌尔禾组油气成藏特征研究
Hydrocarbon Accumulation Characteristics of Upper Wuerhe Formation in Well Block K82,Karamay Oilfield
摘要
Abstract
The permian system upper Wuerhe formation of Zhongguai bulge is a large continuous conglomer-ate oil and gas reservoir group found after the triassic system Baikouquan formation.,there are few studies on hydrocarbon accumulation characteristics in the northern part of the region,and the understanding of hydrocar-bon accumulation patterns is unclear.Based on the data of core observation,cast thin section,well logging and log analysis,combined with the regional structural background and sedimentary environment,the characteristics of hydrocarbon accumulation in well block K82 north of Zhongguai bulge are comprehensively analyzed.Those studies have drawn the following conclusions:The well block K82 mainly develops fan-delta plain and shallow lakeside sedimentary subphase,with large area of divergent river channel sand and conglomerate,inter-channel and shallow lakeside fine gravel sediments forming a good reservoir-cover combination,the physical properties shown that the upper Wuerhe formation in the study area is a medium-low-hole and low-permeability conglom-erate reservoir;Multiple sets of hydrocarbon source rocks,mainly from the permian Fengcheng formation,pro-vide sufficient oil supply for the upper Wuerhe formation reservoir;Fractures and upper and lower stratigraphic unconformities formed in the Hercynian-Yanshanian period have become the oil and gas transportation system of the upper Wuerhe formation in the study area,and the oil reservoir is the source rock below,reservoir above and fault-lithology-type reservoir formation patterns.The conclusion provides scientific basis for further explo-ration and development of oil and gas in the upper Wuerhe formation of the Karamay oilfield.关键词
成藏特征/储集层/上乌尔禾组/K82井区/准噶尔盆地Key words
hydrocarbon accumulation characteristics/reservoir/upper Wuerhe formation/K82 well block/Junggar basin分类
天文与地球科学引用本文复制引用
张新远,李永军,刘凯,王锋,彭南赫,付浩..克拉玛依油田K82井区上乌尔禾组油气成藏特征研究[J].西北地质,2024,57(2):14-23,10.基金项目
新疆油田公司2022～2023年油气勘探科技外协项目"玛南上乌尔禾组储层岩矿特征研究"(20221020). （20221020）
