STUDY OF FACIES AND POTENTIAL COUPLING EFFECT IN OIL AND GAS POOL FORMATION——A CASE STUDY IN THE JIYANG DEPRESSION, THE BOHAI BAY BASIN
-
摘要: 渤海湾盆地济阳坳陷的勘探实践表明,同一成藏动力条件下,油气充注成藏过程中油气等流体突破储层进/出口界面的抵抗力(突破压力)存在差异,导致选择性地进入储集体和孔隙.将油气的这种突破作用和选择性充注归因于储层介质属性(相)、流体流动能力(势)和两者之间的耦合作用,重点探讨其作用机制,建立"相—势"耦合控藏模型,揭示储层有效接纳油气的临界条件,指出随着油层变浅,远离烃源岩,浮力和烃源岩剩余排替压力降低,油水界面张力增加,储层介质接纳油气的临界渗透率和临界孔隙度逐渐变大,从而建立油气成藏的临界条件预测模型,进一步丰富断陷盆地油气勘探理论与方法.Abstract: Exploration practices in the Jiyang Depression of the Bohai Bay Basin have indicated that,under the same dynamic condition of oil and gas pool forming,resistivity(breakthrough pressure) of entrance and exit interface is different,so fluid enters reservoir and pore respectively.It is caused by reservoir property(facies),fluid dynamics(potential) and their coupling effect.Mechanism of the effect is discussed and pool-controlling model is set up.Critical terms for reservoir to hold oil and gas are pointed out.As reservoir getting shallow and far away from source bed,buoyancy and residual entry pressures of source rock reduce,oil-water interface tension increases,and critical permeability and porosity for reservoir to hold hydrocarbon gradually increase.Thereby,critical qualification forecast model of pool forming is set up to enrich exploration theory and method in continental fault basins.
-
[1] 王永诗,金强,朱光有等.济阳坳陷沙河街组有效烃源岩特征与评价[J].石油勘探与开发,2003,30(3):53~55 [2] 周杰,庞雄奇,李娜.渤海湾盆地济阳坳陷烃源岩排烃特征研究[J].石油实验地质,2006,28(1):59~64 [3] Wang Y S,Li M W,Pang X Q,et al.Fault-fracture mesh petroleum plays in the Zhanhua Depression,Bohai Basin,Part 1:Source rock characterization and quantitative assessment[J].Organic Geochemistry,2005,36:183~202 [4] 赵澄林,张善文,袁静.胜利油区沉积储层与油气[M].北京:石油工业出版社,1999.21~31 [5] 马立驰,王永诗,姜在兴等.断陷盆地碳酸盐岩潜山储层模式:以渤海湾盆地济阳坳陷为例[J].石油实验地质,2006,28(1):21~24 [6] 李丕龙,姜在兴,马在平等.东营凹陷储集体与油气分布[M].北京:石油工业出版社,2000.53~81 [7] 李丕龙,张善文,宋国奇等.济阳成熟探区非构造油气藏深化勘探[J].石油学报,2003,24(5):10~15 [8] 李丕龙,张善文,宋国奇等.断陷盆地隐蔽油气藏形成机制:以渤海湾盆地济阳坳陷为例[J].石油实验地质,2004,26(1):3~10 [9] 庞雄奇,陈冬霞,李丕龙等.砂岩透镜体成藏门限及控油气作用机理[J].石油学报,2003,24(3):38~41 [10] 张善文,王永诗,石砥石等.网毯式油气成藏体系:以济阳坳陷新近系为例[J].石油勘探与开发,2003,30(1):1~8 [11] 庞雄奇,姜振学,李建青等.油气成藏过程中的地质门限及其控油气作用[J].石油大学学报,2000,24(4):53~57 [12] Hubbert M K.The theory of groundwater motion[J].J Geol,1940,48:785~944 [13] Hubbert M K.Entrapment of petroleum under hydrodynamic conditions[J].Am Assoc Pet Geol,1953,37:1954~2026 [14] 庞雄奇,金之钧,左胜杰.油气成藏动力学模式成因与分类[J].地学前缘,2000,7(4):507~514 [15] 邱楠生,张善文,金之钧.东营凹陷油气流体运移模式探讨:来自沸腾包裹体的证据[J].石油实验地质,2001,23(4):403~407 [16] 王永诗,张善文,曾溅辉等.沾化凹陷上第三系油气成藏机理及勘探实践[J].油气地质与采收率,2001,8(6):32~34 [17] 许晓明,刘震,谢启超等.渤海湾盆地济阳坳陷异常高压特征分析[J].石油实验地质,2006,28(4):345~349,358 [18] 陈宝宁,白全明,周香翠等.陆相断陷盆地断裂系统与异常压力分布特征初探:以济阳坳陷东营凹陷为例[J].石油实验地质,2005,27(6):601~605,623 -
计量
- 文章访问数: 794
- HTML全文浏览量: 89
- PDF下载量: 311
- 被引次数: 0