古地理学报2016，Vol.18Issue(2)：251-264,14.DOI:10.7605/gdlxb.2016.02.019
松辽盆地大安油田下白垩统泉头组四段特低渗-超低渗储集层成岩作用定量研究
Quantitative study on diagenesis in reservoirs with extra-low to ultra-low permeability in the Member 4 of Lower Cretaceous Quantou Formation in Da'an Oilfield,Songliao Basin
摘要
Abstract
The diagenetic types,intensity,and the influence factors of extra-low to ultra-low perme-ability reservoirs of the Member 4 of Cretaceous Quantou Formation in Da'an Oilfield are analyzed by using data of thin section,casting thin section,SEM,physical properties,logging explanation and particle size analysis.The results show that:(1) Compaction is the dominant diagenesis which leads to the loss of the pore.The compaction degree is medium,which has a good correlation with the compound sand thick-ness,sorting coefficient,mud content etc.(2) The carbonate cementation is the second important factor for the poorer physical properties of reservoirs.The cementation degree is quite weak,and the decrease of the porosity caused by cementation is related to the distance from the reservoir to the configuration surface, quartz content,clastic component content and matrix content.(3 ) The dissolution degree is relatively weak,which can improve the physical properties of the reservoirs.The increased porosity ratio by dissolu-tion has a certain correlation with compound sand thickness and matrix content.The influfence degree of compaction,cementation and dissolution on the physical properties of reservoirs can reflect that the verti-cal superimposition relationship of sand bodies,thickness of channels,and hydrodynamic intensity can af-fect the types and intensity of diagenesis.关键词
松辽盆地/泉头组/泉四段/成岩作用/特低渗-超低渗/储集层/孔隙演化Key words
Songliao Basin/Quantou Formation/Member 4 of Quantou Formation/diagenesis/extra-low to ultra-low permeability/reservoir/porosity evolution分类
天文与地球科学引用本文复制引用
史超群,方松,窦鲁星,姚婷婷,杨尚锋,杨益春,王云龙,秦智,林艳波,潘兆光,陈国辉,刘小芹,鲍志东,陶醉..松辽盆地大安油田下白垩统泉头组四段特低渗-超低渗储集层成岩作用定量研究[J].古地理学报,2016,18(2):251-264,14.基金项目
国家科技重大专项资助（专题号2008ZX05030－05－001－01，2011ZX05004－004）。［Financially supported by the National Scientific and Technological Key Projects of China （Project Codes2008ZX05030－05－001－01；2011ZX05004－004）］ （）
