石油实验地质
石油實驗地質
석유실험지질
EXPERIMENTAL PETROLEUM GEOLOGY
2013年
3期
280-284
,共5页
储集空间%成岩作用%物性特征%青东凹陷%济阳坳陷%渤海湾盆地
儲集空間%成巖作用%物性特徵%青東凹陷%濟暘坳陷%渤海灣盆地
저집공간%성암작용%물성특정%청동요함%제양요함%발해만분지
reservoir space%diagenesis%physical characteristics%Qingdong Sag%Jiyang Depression%Bohai Bay Basin
济阳坳陷青东凹陷勘探程度很低,沉积储层等基础地质条件研究显得尤为重要.沙河街组是青东凹陷主要的含油层系.综合岩心、薄片、物性分析等资料,对该区储层特征进行了系统研究.沙河街组储层储集空间以原生粒间孔隙、粒间溶蚀孔和粒内溶孔为主.沙四段主要处于早成岩 B 期—晚成岩 A 期,非均质性较强;沙三段主要处于早成岩 B 期,整体物性表现为高孔、高渗透的特征.沉积微相和成岩作用是研究区储层物性的主要影响因素.溶蚀作用的发生与有机质排烃伴生的有机酸有关,使储层物性得以改善;胶结作用和压实作用使储层孔渗性变差.
濟暘坳陷青東凹陷勘探程度很低,沉積儲層等基礎地質條件研究顯得尤為重要.沙河街組是青東凹陷主要的含油層繫.綜閤巖心、薄片、物性分析等資料,對該區儲層特徵進行瞭繫統研究.沙河街組儲層儲集空間以原生粒間孔隙、粒間溶蝕孔和粒內溶孔為主.沙四段主要處于早成巖 B 期—晚成巖 A 期,非均質性較彊;沙三段主要處于早成巖 B 期,整體物性錶現為高孔、高滲透的特徵.沉積微相和成巖作用是研究區儲層物性的主要影響因素.溶蝕作用的髮生與有機質排烴伴生的有機痠有關,使儲層物性得以改善;膠結作用和壓實作用使儲層孔滲性變差.
제양요함청동요함감탐정도흔저,침적저층등기출지질조건연구현득우위중요.사하가조시청동요함주요적함유층계.종합암심、박편、물성분석등자료,대해구저층특정진행료계통연구.사하가조저층저집공간이원생립간공극、립간용식공화립내용공위주.사사단주요처우조성암 B 기—만성암 A 기,비균질성교강;사삼단주요처우조성암 B 기,정체물성표현위고공、고삼투적특정.침적미상화성암작용시연구구저층물성적주요영향인소.용식작용적발생여유궤질배경반생적유궤산유관,사저층물성득이개선;효결작용화압실작용사저층공삼성변차.
@@@@The exploration degree of the Qingdong Sag of the Jiyang Depression is very low, so it is necessary to carry out studies of basic geological conditions such as sedimentary reservoir. The Shahejie Formation is the main oil-bearing sequence in the Qingdong Sag. Based on core, thin section and physical property analyses, the reser-voir characteristics in the study area have been systematically researched. Pores in the Shahejie Formation are mainly primary intergranular, intergranular dissolved and intragranular dissolved ones. The 4th member of the Shahejie Formation is from the early diagenesis stage B to the late diagenetic stage A, and has strong heterogenei-ty. The 3rd member of the Shahejie Formation is during the early diagenesis stage B, and has high porosity and high permeability. Sedimentary microfacies and diagenesis are the main influencing factors for reservoir property in the study area. Corrosion happens when organic acid generates as organic matter expulsing, which improving reservoir property. Cementation and compaction make the reservoir porosity and permeability become worse.