南堡凹陷湖相碳酸盐岩优质储层识别及分布预测
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摘要
南堡凹陷曹妃甸A油田沙一下亚段发育湖相碳酸盐岩储层,常表现出岩性特征复杂、纵横向非均质性强的特征,识别该类储层中的优质储层并预测其分布范围对勘探开发具有重要意义。文中通过岩心、薄片、测井、压汞曲线等资料分析,对研究区各类储层的岩性特征、测井响应特征、孔喉结构及物性特征进行对比分析,其中生物碎屑白云岩发育体腔孔、铸模孔,储层物性、连通性及孔喉结构较好,为研究区的优质储层。同时,根据在等时地层隔架内分析的有利岩相与古地貌、古环境的关系,结合井上岩性组合特征,建立了沙一下亚段碳酸盐岩沉积模式,预测了优质储层的展布形态;再将地质模式与钻井资料相结合,转换为数学模型,定量预测了优质储层的分布范围及变化趋势。
Lacustrine carbonate reservoirs developed in the lower Es1 of Caofeidian A Oilfield in Nanpu Sag, which exhibit the characteristics of complex lithological and high crosswise heterogeneity. Identifying the high-quality reservoir and predicting its distribution range are of great significance. Through the research of core thin sections, logging and intrusive mercury curve, this paper carries out a comparative analysis on lithological characteristics, log response characteristics, pore throat structure and physical properties in various reservoirs of the study area. The results show that dorsal foramen and mould pore developed in bioclastic dolostone. Hence, the bioclastic dolostone has better reservoir property, connectivity and pore throat structure, which is the high-quality reservoir of the study area. And according to the analysis on the relationship between favorable lithofacies and paleoenvironment, combined with the characteristics of lithologic assemblages of each well, this research establishes the sedimentary model of carbonatite in the lower Es1 and predicts the distribution of high-quality reservoir. In addition, this study predicts the distribution range and variation trend of high-quality reservoirs by combining geologic model with drilling data and converting into mathematical models.
Lacustrine carbonate reservoirs developed in the lower Es1 of Caofeidian A Oilfield in Nanpu Sag, which exhibit the characteristics of complex lithological and high crosswise heterogeneity. Identifying the high-quality reservoir and predicting its distribution range are of great significance. Through the research of core thin sections, logging and intrusive mercury curve, this paper carries out a comparative analysis on lithological characteristics, log response characteristics, pore throat structure and physical properties in various reservoirs of the study area. The results show that dorsal foramen and mould pore developed in bioclastic dolostone. Hence, the bioclastic dolostone has better reservoir property, connectivity and pore throat structure, which is the high-quality reservoir of the study area. And according to the analysis on the relationship between favorable lithofacies and paleoenvironment, combined with the characteristics of lithologic assemblages of each well, this research establishes the sedimentary model of carbonatite in the lower Es1 and predicts the distribution of high-quality reservoir. In addition, this study predicts the distribution range and variation trend of high-quality reservoirs by combining geologic model with drilling data and converting into mathematical models.
引文
[1]文雯,赵晓东,刘晓,等.南堡凹陷南部物源古近系沙一段沉积特征[J].断块油气田,2017,24(3):333-336.
[2]毕彩芹,朱强,胡志方,等.渤海湾盆地济阳坳陷沾车地区沙四上亚段湖相碳酸盐岩储层特征[J].石油实验地质,2017,39(2):203-212.
[3]张峰,崔健健,邵先杰,等.高集油田阜宁组湖相碳酸盐岩储层特征[J].断块油气田,2015,22(3):296-300.
[4]李得立,谭先锋,夏敏全,等.东营凹陷沙四段湖相白云岩沉积特征及成因[J].断块油气田,2010,17(4):418-422.
[5]高胜利,王连敏,武玺,等.渤海湾盆地黄骅坳陷齐家务地区沙一下亚段湖相碳酸盐岩储层地球化学特征[J].石油实验地质,2012,34(3):309-313.
[6]孙钰,钟建华,袁向春,等.国内湖相碳酸盐岩研究的回顾与展望[J].特种油气藏,2008,15(5):1-6.
[7]杜韫华.渤海湾地区下第三系湖相碳酸盐岩及沉积模式[J].石油与天然气地质,1990,11(4):376-392.
[8]王冠民,鹿洪友,姜在兴.惠民凹陷商河地区沙一段碳酸盐岩沉积特征[J].石油大学学报(自然科学版),2002,26(4):1-4.
[9]郭洪金,李勇,钟建华,等.山东东辛油田古近系沙河街组一段碳酸盐岩储集特征[J].吉林大学学报(地球科学版),2006,36(3):351-357.
[10]加东辉,徐长贵,杨波,等.辽东湾辽东带中南部古近纪古地貌恢复和演化及其对沉积体系的控制[J].古地理学报,2007,9(2):155-166.
[11]宋章强,陈延芳,刘志刚,等.渤海海域沙一、二时期碳酸盐岩沉积特征及主控因素分析[J].沉积与特提斯地质,2013,33(1):5-11.
[12]张建林,林畅松,郑和荣.断陷湖盆断裂、古地貌及物源对沉积体系的控制作用:以孤北洼陷沙三段为例[J].油气地质与采收率,2002,9(4):24-27.
[13]曹守连.南堡凹陷断裂带构造演化及成藏条件分析[J].断块油气田,1997,4(2):13-16.
[14]朱筱敏,信荃麟,张晋仁,等.断陷湖盆滩坝储集体沉积特征及沉积模式[J].沉积学报,1994,12(2):20-28.
[15]徐长贵,赖维成,薛永安,等.古地貌分析在渤海古近系储集层预测中的应用[J].石油勘探与开发,2004,31(5):53-56.
[16]高广亮,马立民,吴远坤,等.南堡凹陷堡古2区块砂质碎屑流油藏地质特征[J].断块油气田,2018,25(1):11-15.
[17]李志虎,吴培侗,张翔,等.碳酸盐岩地层划分及类型识别方法[J].断块油气田,2017,24(2):169-173.
[2]毕彩芹,朱强,胡志方,等.渤海湾盆地济阳坳陷沾车地区沙四上亚段湖相碳酸盐岩储层特征[J].石油实验地质,2017,39(2):203-212.
[3]张峰,崔健健,邵先杰,等.高集油田阜宁组湖相碳酸盐岩储层特征[J].断块油气田,2015,22(3):296-300.
[4]李得立,谭先锋,夏敏全,等.东营凹陷沙四段湖相白云岩沉积特征及成因[J].断块油气田,2010,17(4):418-422.
[5]高胜利,王连敏,武玺,等.渤海湾盆地黄骅坳陷齐家务地区沙一下亚段湖相碳酸盐岩储层地球化学特征[J].石油实验地质,2012,34(3):309-313.
[6]孙钰,钟建华,袁向春,等.国内湖相碳酸盐岩研究的回顾与展望[J].特种油气藏,2008,15(5):1-6.
[7]杜韫华.渤海湾地区下第三系湖相碳酸盐岩及沉积模式[J].石油与天然气地质,1990,11(4):376-392.
[8]王冠民,鹿洪友,姜在兴.惠民凹陷商河地区沙一段碳酸盐岩沉积特征[J].石油大学学报(自然科学版),2002,26(4):1-4.
[9]郭洪金,李勇,钟建华,等.山东东辛油田古近系沙河街组一段碳酸盐岩储集特征[J].吉林大学学报(地球科学版),2006,36(3):351-357.
[10]加东辉,徐长贵,杨波,等.辽东湾辽东带中南部古近纪古地貌恢复和演化及其对沉积体系的控制[J].古地理学报,2007,9(2):155-166.
[11]宋章强,陈延芳,刘志刚,等.渤海海域沙一、二时期碳酸盐岩沉积特征及主控因素分析[J].沉积与特提斯地质,2013,33(1):5-11.
[12]张建林,林畅松,郑和荣.断陷湖盆断裂、古地貌及物源对沉积体系的控制作用:以孤北洼陷沙三段为例[J].油气地质与采收率,2002,9(4):24-27.
[13]曹守连.南堡凹陷断裂带构造演化及成藏条件分析[J].断块油气田,1997,4(2):13-16.
[14]朱筱敏,信荃麟,张晋仁,等.断陷湖盆滩坝储集体沉积特征及沉积模式[J].沉积学报,1994,12(2):20-28.
[15]徐长贵,赖维成,薛永安,等.古地貌分析在渤海古近系储集层预测中的应用[J].石油勘探与开发,2004,31(5):53-56.
[16]高广亮,马立民,吴远坤,等.南堡凹陷堡古2区块砂质碎屑流油藏地质特征[J].断块油气田,2018,25(1):11-15.
[17]李志虎,吴培侗,张翔,等.碳酸盐岩地层划分及类型识别方法[J].断块油气田,2017,24(2):169-173.