复杂油气藏
複雜油氣藏
복잡유기장
COMPLEX HYDROCARBON RESERVOIRS
2011年
3期
47-50
,共4页
唐在秋%林式微%毕建福%黄飞%伍国勇
唐在鞦%林式微%畢建福%黃飛%伍國勇
당재추%림식미%필건복%황비%오국용
海安南地区%泰一段储层%储层物性%沉积相%成岩作用
海安南地區%泰一段儲層%儲層物性%沉積相%成巖作用
해안남지구%태일단저층%저층물성%침적상%성암작용
the south of Haian area%K2t1 reservoir%petrophysical property%sedimentary facies%diagenesis
海安南地区白垩系泰一段为三角洲沉积，且主要为三角洲前缘亚相沉积。其储层孔隙以原生孔隙和次生孔隙的混合类型形式存在，原始物性受沉积相带的控制并受沉积物分选影响，物性优劣顺序为三角洲前缘水下分流河道、河口坝、远砂坝、水下天然堤。成岩作用以胶结和溶蚀作用为主，压实与交代作用不太明显，碳酸盐胶结物溶蚀形成大量的粒间溶孔，现今孔隙度和渗透率与碳酸盐含量呈明显的负相关关系。
海安南地區白堊繫泰一段為三角洲沉積，且主要為三角洲前緣亞相沉積。其儲層孔隙以原生孔隙和次生孔隙的混閤類型形式存在，原始物性受沉積相帶的控製併受沉積物分選影響，物性優劣順序為三角洲前緣水下分流河道、河口壩、遠砂壩、水下天然隄。成巖作用以膠結和溶蝕作用為主，壓實與交代作用不太明顯，碳痠鹽膠結物溶蝕形成大量的粒間溶孔，現今孔隙度和滲透率與碳痠鹽含量呈明顯的負相關關繫。
해안남지구백성계태일단위삼각주침적，차주요위삼각주전연아상침적。기저층공극이원생공극화차생공극적혼합류형형식존재，원시물성수침적상대적공제병수침적물분선영향，물성우렬순서위삼각주전연수하분류하도、하구패、원사패、수하천연제。성암작용이효결화용식작용위주，압실여교대작용불태명현，탄산염효결물용식형성대량적립간용공，현금공극도화삼투솔여탄산염함량정명현적부상관관계。
In the Tai formation of Cretaceous of the southern Haian area, the sediments are formed in delta deposits. Deh - front sub - facies are a major type of sedimentary sub - facies. The reservoir pores exist as the hybrid type of primary porosity and induced porosity. The primary physical properties were controlled by sedimentary facies belts and were influenced by sorting of sediments. The good and bad order of the reservoir physical properties was ： delta front subaqueous distributary channel, mouth bar, distal bar and underwater natural levee. The diagenesis is mainly on cementation and dissolution, and is not obviously on compaction and metasomatism processes. The carbonate cements created a great deal of intergranular dissolution pores. There was a obvious inverse relation between the current porosity and permeability, and the carbonate content.
