成都理工大学学报(自然科学版)
成都理工大學學報(自然科學版)
성도리공대학학보(자연과학판)
Journal of Chengdu University of Technology (Science & Technology Edition)
2015年
5期
539-545
,共7页
周立宏%蒲秀刚%韩文中%陈长伟%张伟%林常梅%柳飒
週立宏%蒲秀剛%韓文中%陳長偉%張偉%林常梅%柳颯
주립굉%포수강%한문중%진장위%장위%림상매%류삽
南皮斜坡%孔二段%沉积特征%岩性地层油气藏%致密油
南皮斜坡%孔二段%沉積特徵%巖性地層油氣藏%緻密油
남피사파%공이단%침적특정%암성지층유기장%치밀유
Nanpi slope area%Paleogene Kongdian Formation%sedimentary characteristic%lithostratigraphy reservoir%tight oil
应用沉积学和石油地质理论,通过沉积背景分析、岩心观察、砂分散与油气成藏模式构建等手段,对黄骅拗陷沧东凹陷南皮斜坡古近系孔店组第二段(孔二段)沉积特征与控砂控藏模式进行了研究,认为南皮斜坡是一个继承性发育的缓坡,孔二段受东光凸起、沧县隆起物源及徐黑凸起物源的影响,斜坡砂体发育,且具有凸起顺向供砂、侵蚀沟槽输砂、单一坡-折控砂的规律,以发育辫状河三角洲-远岸水下扇沉积为主。中斜坡发育三角洲前缘主体,埋藏适中,储集物性好,砂岩与烃源岩匹配,圈闭条件良好,且位于油气运移的有利指向区,是岩性地层油气藏勘探的重点领域;低斜坡发育优质烃源岩,夹三角洲前缘远端-远岸水下扇砂体及薄层的云质岩类,是致密油勘探的有利地区。
應用沉積學和石油地質理論,通過沉積揹景分析、巖心觀察、砂分散與油氣成藏模式構建等手段,對黃驊拗陷滄東凹陷南皮斜坡古近繫孔店組第二段(孔二段)沉積特徵與控砂控藏模式進行瞭研究,認為南皮斜坡是一箇繼承性髮育的緩坡,孔二段受東光凸起、滄縣隆起物源及徐黑凸起物源的影響,斜坡砂體髮育,且具有凸起順嚮供砂、侵蝕溝槽輸砂、單一坡-摺控砂的規律,以髮育辮狀河三角洲-遠岸水下扇沉積為主。中斜坡髮育三角洲前緣主體,埋藏適中,儲集物性好,砂巖與烴源巖匹配,圈閉條件良好,且位于油氣運移的有利指嚮區,是巖性地層油氣藏勘探的重點領域;低斜坡髮育優質烴源巖,夾三角洲前緣遠耑-遠岸水下扇砂體及薄層的雲質巖類,是緻密油勘探的有利地區。
응용침적학화석유지질이론,통과침적배경분석、암심관찰、사분산여유기성장모식구건등수단,대황화요함창동요함남피사파고근계공점조제이단(공이단)침적특정여공사공장모식진행료연구,인위남피사파시일개계승성발육적완파,공이단수동광철기、창현륭기물원급서흑철기물원적영향,사파사체발육,차구유철기순향공사、침식구조수사、단일파-절공사적규률,이발육변상하삼각주-원안수하선침적위주。중사파발육삼각주전연주체,매장괄중,저집물성호,사암여경원암필배,권폐조건량호,차위우유기운이적유리지향구,시암성지층유기장감탐적중점영역;저사파발육우질경원암,협삼각주전연원단-원안수하선사체급박층적운질암류,시치밀유감탐적유리지구。
Using sedimentology and petroleum geology, based on the analysis of sedimentary background,the core observation,the sand distribution and by building the hydrocarbon accumulation patterns,this paper studies the sedimentary characteristics and the models of controlling sand and oil reservoirs in Member 2 of Paleogene Kongdian Formation (Ek 2 )of the Nanpi slope area,Cangdong sag of the Huanghua depression. The researches show that the Nanpi slope is a successively developing gentle slope.Because the influence of the provenance from the Dongguang salient,the Cangxiang uplift and the Xuhei salient,the sand bodies are well-developed in Ek 2 .In the pattern that the sand bodies are supported forward from the salient,transported in erosion grooves,and controlled by the single slope-break,there mainly develops the braided river delta-off shore subaqueous fan. There mainly develop the bodies of delta front in the middle slope,where the sand bodies matching the source rocks are buried in a moderate depth,have better physical properties,at the same time,have good trap conditions,and are located in the favorable directional zone of hydrocarbon migration.So the middle slope is the important exploration area of lithostratigraphy reservoir.In the low slope, there develop the superior source rocks which are intercalated with the sand bodies formed by far delta front-off shore subaqueous fan and the thin dolomite.So the low slope is the favorable exploration area of tight oil.