济阳坳陷储备圈闭特点分析
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摘要
圈闭是捕获、聚集和保存油气的场所,是油气勘探潜力的具体表现,通过对济阳坳陷1995年以来储备圈闭的地质层位、类型、面积、资源量等方面进行统计分析,发现其储备圈闭具有三个特点:①储备圈闭分布区域广泛,以东营凹陷、沾化凹陷居多,目的层系主要是下第三系,近年已出现逐步向上第三系、前第三系和深层转移的趋势;②圈闭埋深以小于3000m的浅一中层圈闭为主,面积多小于10km2、资源量多小于500×104t,并且正在逐年减小;③圈闭类型众多,已经从构造圈闭为主的态势转变为以复杂隐蔽的岩性、地层圈闭占主导地位的格局,并且地震勘探等技术的发展与进步对圈闭资源量稳定在较高水平起越来越重要的作用。
Traps are the places of oil-gas capture, accumulation and preservation,which show the future oil-gas exploration potential. Geological horizon,type,area,resource extent and other aspects of the conservation traps were statistically analyzed. Three properties are found in the conservation traps;①wide distribution mainly in Dongying sag and Zhanghua sag,the target strata are Paleogene mainly and tend to Neogene,preTertiary or deep formations gradually in recent years; ②dominated by shallow-intermediate traps with less than 3000m of buried depth,less than 10km2of area, less than 500×104t of resource extent and becoming decrease year by year;③variable types of trap transited from structure trap to complex subtle lithologic and stratigraphic traps mainly, and the seismic exploration technique development and progress has more important role on stabilizing trap resource extent at higher level.
Traps are the places of oil-gas capture, accumulation and preservation,which show the future oil-gas exploration potential. Geological horizon,type,area,resource extent and other aspects of the conservation traps were statistically analyzed. Three properties are found in the conservation traps;①wide distribution mainly in Dongying sag and Zhanghua sag,the target strata are Paleogene mainly and tend to Neogene,preTertiary or deep formations gradually in recent years; ②dominated by shallow-intermediate traps with less than 3000m of buried depth,less than 10km2of area, less than 500×104t of resource extent and becoming decrease year by year;③variable types of trap transited from structure trap to complex subtle lithologic and stratigraphic traps mainly, and the seismic exploration technique development and progress has more important role on stabilizing trap resource extent at higher level.
引文
1郭元岭,赵乐强,石红霞等.济阳坳陷探明地质储量特点分析.石 油勘探与开发,2001,28(3):33-36
2李丕龙,金之钧,张善文等.济阳坳陷油气勘探现状及主要研究进 展.石油勘探与开发,2003,30(3):1-4
3关德范,郑和荣,龙胜祥.中石化东部探区油气勘探潜力分析.石 油学报,2003,24(2):1-5
4宗国洪.石红霞,郭元岭等.济阳坳陷地震勘探效果分析.新疆石 油地质,2002,23(6):22-23
2李丕龙,金之钧,张善文等.济阳坳陷油气勘探现状及主要研究进 展.石油勘探与开发,2003,30(3):1-4
3关德范,郑和荣,龙胜祥.中石化东部探区油气勘探潜力分析.石 油学报,2003,24(2):1-5
4宗国洪.石红霞,郭元岭等.济阳坳陷地震勘探效果分析.新疆石 油地质,2002,23(6):22-23
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