渤南洼陷北部陡坡带沙河街组砂砾岩有效储层物性下限及其主控因素

doi:10.11743/ogg20120514

摘要/Abstract

摘要：

结合研究区测井解释成果和油田试油资料,综合应用分布函数曲线法和试油法,确定了渤海湾盆地渤南洼陷北部陡坡带沙河街组不同深度段的砂砾岩有效储层物性下限,并拟合出物性下限与深度的关系式,在此基础上分析了岩性、沉积相、成岩阶段、地层压力等对砂砾岩有效储层发育的影响。研究结果表明:有效储层物性下限有随埋深增加而逐渐降低的趋势;有利的沉积相带是砂砾岩有效储层发育的关键因素,对储层质量起决定性作用。研究区有效储层主要分布于西部的滑塌浊积扇及中东部近岸水下扇的扇中亚相;其中近岸水下扇的扇中亚相最为有利,其次为滑塌浊积扇。成岩作用也在一定程度上影响有效储层物性。研究区砂砾岩体主要处于中成岩阶段A₁和A₂亚期,对应于有机质热演化的主要生油气阶段,有利于形成次生孔隙,其中溶蚀作用使得深部储层物性变好。研究区地层压力对有效储层物性的影响较小。

关键词: 有效储层, 物性, 砂砾岩储层, 北部陡坡带, 渤南洼陷, 渤海湾盆地

Abstract:

This paper determined the lower limits of physical properties for the effective coarse-grained clastic reservoir rocks in different intervals of the Shahejie Formation on northern steep slope of Bonan subsag,the Bohai Bay Basin by integrating the distribution function curve and production test methods combined with logging and production testing data.The relational expressions between the lower limits of physical properties and depths were also defined through matching.On this basis,this paper analyzed the effects of lithology,sedimentary facies,diagenetic stage and formation pressure on the formation of effective reservoir rocks.The lower limits of physical properties of effective reservoirs decrease with the increasing depth.Favorable sedimentary facies is the key factor controlling the development of effective coarse-grained clastic reservoirs,and determine reservoir quality.The effective reservoirs area are mainly distributed in the western slump turbidite fans and the midfan of the central and eastern nearshore subaqueous fans in the study,the latter is better.Diagenesis also affect reservoir quality to a certain extent.The coarse-grained clastic reservoirs developed mostly at A₁ and A₂ substage of middle diagenetic stage,which correspond to the major hydrocarbon generation stage during organic thermal evolution,which is favorable for the formation of secondary porosity,with dissolution improving the quality of deep reservoir rocks.,Formation pressure has little effect on effective reservoir rocks.

Key words: effective reservoir, physical property, coarse-grained clastic reservoir, northern steep slope, Bonan subsag, Bohai Bay Basin

中图分类号:

TE112.3

李文浩,张枝焕,昝灵,等. 渤南洼陷北部陡坡带沙河街组砂砾岩有效储层物性下限及其主控因素[J]. 石油与天然气地质, 2012, 33(5): 766-777. doi: 10.11743/ogg20120514 Li Wenhao,Zhang Zhihuan,Zan Ling,et al. Lower limits of physical properties and their controlling factors of effective coarse-grained clastic reservoirs in the Shahejie Formation on northern steep slope of Bonan subsag,the Bohai Bay Basin[J]. Oil & Gas Geology, 2012, 33(5): 766-777. doi: 10.11743/ogg20120514

参考文献

[1] 郭睿.储集层物性下限值确定方法及其补充[J].石油勘探与开发,2004,31(5):140-144. Guo Rui.Supplement to determining method of cut-off value of net pay[J].Petroleum Exploration and Development,2004,31(5):140-144.
[2] 杨通佑,范尚炯,陈元千,等.石油及天然气储量计算方法[M].北京:石油工业出版社,1990:31-32. Yang Tongyou,Fan Shangjiong,Chen Yuanqian,et al.Petro-leum and natural gas reserves calculation method[M].Beijing:Oil Industry Press,1990:31-32.
[3] 何宏,蔡忠东.渤南洼陷沙河街组次生孔隙形成机理分析[J].石油天然气学报(江汉石油学院学报),2005,27(5):557-559. He hong,Cai Zhongdong.Mechanism of secondary pore in Shahejie formation of Bonan depression[J].Journal of Jianghan Petroleum Institute,2005,27(5):557-559.
[4] 孙海龙.渤南洼陷膏盐层发育与深层储层次生孔隙发育的关系[J].河南石油,2005,19(02):14-16. Sun Hailong.Relationship between development of salt layers and the secondary porosity of deep reservoirs in Bonan sag[J].Henan Petroleum,2005,19(02):14-16.
[5] 房克志,王军.埕南断裂带砂砾岩体的地震识别与描述[J].油气地质与采收率,2003,10(5):41-43. Fang Kezhi,Wang Jun.Seismic identification and description for glutenite of Chengnan faulted zone[J].Oil & Gas Recovery Technology,2003,10(5):41-43.
[6] 孙怡,鲜本忠,林会喜.断陷湖盆陡坡带砂砾岩体沉积期次的划分技术[J].石油地球物理勘探,2007,42(4):468-473. Sun Yi,Xian Benzhong,Lin Huixi.Division of sedimentary cycle of sand-gravel rock mass in steep slope of faulted lake basin[J].Oil Geophysical Prospecting,2007,42(4):468-473.
[7] 万玲,孙岩,魏国齐.确定储集层物性参数下限的一种新方法及其应用-以鄂尔多斯盆地中部气田为例[J].沉积学报,1999,17(3):454-457. Wan Ling,Sun Yan,Wei Guoqi.A new method used to determine the lower limit of the petrophysical parameters for reservoirs and its application:A case study on the central gas field in Erdos Basin[J].Acta Sedimentologica Sinca,1999,17(3):454-457.
[8] 庞雄奇,李丕龙,张善文,等.陆相断陷盆地相-势耦合控藏作用及其基本模式[J].石油与天然气地质,2007,28(5):641-652. Pang Xiongqi,Li Pilong,Zhang Shanwen,et al.Control of facies-potential coupling on hydrocarbon accumulation in continental faulted basins and its basic geological models[J].Oil & Gas Geology,2007,28(5):641-652.
[9] 王艳忠,操应长,宋国奇,等.东营凹陷古近系深部碎屑岩有效储层物性下限的确定[J].中国石油大学学报(自然科学版),2009,33(4):16-21. Wang Yanzhong,Cao Yingchang,Song Guoqi,et al.Determination of physical property lower limit of deep clastic effective reservoirs of Paleogene in Dongying depression[J].Journal of China University of Petroleum(Edition of Natural Science),2009,33(4):16-21.
[10] 邵长新,王艳忠,操应长.确定有效储层物性下限的两种新方法及应用-以东营凹陷古近系深部碎屑岩储层为例[J].石油天然气学报(江汉石油学院学报),2008,30(2):414-416. Shao Changxin,Wang Yanzhong,Cao Yingchang.Two new methods used to determine the low limits of effective reservoir physical properties and their applications-a case study on deep clastic reservoir of Palaeogene in Donglying depression[J].Journal of Oil and Gas Technology,2008,30(2):414-416.
[11] 王艳忠,操应长.车镇凹陷古近系深层碎屑岩有效储层物性下限及控制因素[J].沉积学报,2010,28(4):752-761. Wang Yanzhong,Cao Yingchang.Lower property limit and controls on deep effective clastic reservoir of Paleogene in Chezhen depression[J].Acta Sedimentologica Sinica,2010,28(4):752-761.
[12] 韩登林,张昌民,尹太举.层序界面成岩反应规律及其对储层储集物性的影响[J].石油与天然气地质,2010,31(4):449-454,462. Han Denglin,Zhang Changmin,Yin Taiju.Diagenetic reaction pattern of the sequence boundary and its impacts on reservoir quality[J].Oil & Gas Geology,2010,31(4):449-454,462.
[13] 李宏涛,龙胜祥,吴世祥,等.川西坳陷中段下三叠统碳酸盐岩储层成岩作用与机理[J].石油与天然气地质,2011,32(4):551-559. Li Hongtao,Long Shengxiang,Wu Shixiong,et al.Diagenesis and forming mechanism of the Lower Triassic carbonate reservoirs in the middle part of the western Sichuan Depression[J].Oil & Gas Geology,2011,32(4):551-559.
[14] 李庆,胡文瑄,钱一雄,等.塔里木盆地肖尔布拉克组溶蚀型白云岩储层发育特征[J].石油与天然气地质,2011,32(4):522-530. Li Qing,Hu Wenxuan,Qian Yixiong,et al.Features of dissolved dolostone reservoirs in the Xiaoerbulak Formation,Tarim Basin[J].Oil & Gas Geology,2011,32(4):522-530.
[15] 吴世祥,李宏涛,龙胜祥,等.川西雷口坡组碳酸盐岩储层特征及成岩作用[J].石油与天然气地质,2011,32(4):542-550,559. Wu Shixiang,Li Hongtao,Long Shengxiang,et al.A study on characteristics and diagenesis of carbonate reservoirs in the Middle Triassic Leikoupo Formation in western Sichuan Depression[J].Oil & Gas Geology,2011,32(4):542-550,559.
[16] 应凤祥,罗平,何东博,等.中国含油气盆地碎屑岩储集层成岩作用与成岩数值模拟[M].北京:石油工业出版社,2004. Ying Fengxiang,Luo Ping,He Dongbo,et al.Clastic rock reservoir diagenesis and diagenetic numerical simulation of the petroliferous basins of China[M].Beijing:Petroleum Industry Press,2004.
[17] 陈永峤,于兴河,周新桂,等.东营凹陷各构造区带下第三系成岩演化与次生孔隙发育规律研究[J].天然气地球科学,2004,5(1):68-74. Chen Yongqiao,Yu Xinghe,Zhou Xingui,et al.Research on diagenetic evolutive succession and occurrence of secondary porosity of lower tertiary in different structural belt of Dongying depression[J].Natural Gas Geoscience,2004,5(1):68-474.
[18] 游俊,郑浚茂,周建生.深部地层异常压力与异常孔隙度及油气藏的关系[J].中国海上油气地质,1997,11(4):249-253. You Jun,Zheng Junmao,Zhou Jiansheng,et al.The relationship between abnormal pressure and abnormal porosity and hydrocarbon reservoir in the deep strata [J].China offshore Oil and Gas,1997,11(4):249-253.
[19] 陈纯芳,赵澄林,李会军.板桥和歧北凹陷沙河街组深层碎屑岩储层物性特征及其影响因素[J].石油大学学报:自然科学版,2002,26(1):4-7. Chen Chunfang,Zhao Chenglin,Li Huijun.Physical properties of reservoir and influencing factors of deep burial clastic rocks in Banqiao-Qibei sag[J].Journal of The Universtiy of Petroleum,China,2002,26(1):4-7.
[20] 付兆辉,秦伟军,李敏.渤海湾盆地垦东凸起构造演化及对沉积的控制作用[J].石油地质与工程,2011,25(4):7-10. Fu Zhaohhui,Qing Weijun,Li Min.Tectonic evolution and its controlling effect on sedimentation of the Kendong uplift in Bohai Bay Basin[J].Petroleum Geology and Engineering,2011,25(4):7-10.