克拉苏冲断带深层碎屑岩有效储层物性下限及控制因素

doi:10.13278/j.cnki.jjuese.201504105

摘要/Abstract

摘要：

库车坳陷克拉苏冲断带深层白垩系碎屑岩储层为研究区内一套优质储层和主要产层,埋深2 300~7 900 m,取心偏少,有效储层分布预测难度大.综合运用岩心、储层实验分析和测井、压汞、试油等资料,分别利用分布函数曲线法、含水饱和度上限值法、最小有效孔喉半径法及排驱压力法,求取了白垩系巴什基奇克组储层不同深度下有效储层的物性下限,并运用回归分析方法求取了物性下限与深度之间的函数方程,实现了物性下限与深度的动态拟合.结果表明:研究区内有效储层孔隙度下限取2.63%,有效储层埋深下限预测达8 320 m;而理论上,克拉苏冲断带有效储层孔隙度下限可达1.69%,埋深下限可达9 860 m,勘探前景非常广阔.本文在物性下限研究的基础上,结合岩性特征、埋深、地层压力及成岩作用特征探讨了深层有效储层发育的控制因素.储层质量差异主要受控于储层的埋深、溶蚀作用及构造破裂作用.

关键词: 克拉苏冲断带, 有效储层, 物性下限, 控制因素, 巴什基奇克组, 库车坳陷

Abstract:

The Cretaceous Bashijiqike Formation is a high-quality sandstone reservoir and a primary oil/gas-producing bed in Kelasu structure zone. As its burial depth is between 2 300 m to 7 900 m, and cores are relatively limited, and the prediction of effective reservoirs is considerably difficult. Based on the comprehensive application of the core, well logging data, mercury injection data, and oil production test, the lower physical property limit of deep clastic reservoirs in Kelasu structure zone is determined by the distribution function curve method, the upper limit of water saturation method, the lowest effective pore throat radius method, and the entry pressure method. The functional equation between lower physical property limit and depth is obtained. The lower porosity limit of effective reservoirs is 2.63%. The lower burial depth limit of effective reservoirs is predicted to be about 8 320 m, which indicates a bright exploration prospect. The lower porosity limit and the lower burial depth limit would be 1.69% and 9 860 m in theory. On the basis of the research of lower physical property limit, combining the analysis of the sedimentary characteristics, buried depth, reservoir pressure, and diagenesis characteristics of Bashijiqike Formation sandbodies, the controlling factors of effective reservoirs are discussed. The main controlling factors of the effective reservoir include buried depth, dissolution and fissure.

Key words: Kelasu structure area, effective reservoir, lower physical property limit, controlling factors, Bashijiqike Formation, Kuqa depression

中图分类号:

TE122.23

潘荣, 朱筱敏, 张剑锋, 何敏, 邸宏利. 克拉苏冲断带深层碎屑岩有效储层物性下限及控制因素[J]. 吉林大学学报(地球科学版), 2015, 45(4): 1011-1020.

Pan Rong, Zhu Xiaomin, Zhang Jianfeng, He Min, Di Hongli. Lower Physical Property Limit and Controlling Factors on Deep Effective Clastic Reservoirs in Kelasu Structure Zone[J]. Journal of Jilin University(Earth Science Edition), 2015, 45(4): 1011-1020.

参考文献

[1] 贾进华, 顾家裕, 郭庆银, 等. 塔里木盆地克拉2气田白垩系储层沉积相[J]. 古地理学报, 2001, 3(3): 67-75. Jia Jinhua, Gu Jiayu, Guo Qingyin, et al. Sedimentary Facies of Cretaceous Reservoir in Kela-2 Gas Field of Tarim Basin[J]. Journal of Palaeogeography, 2001, 3(3): 67-75.

[2] 邹华耀, 郝芳, 杨申谷, 等. 超压流体排放通道与溶蚀孔隙的形成:以库车坳陷克拉苏构造带喀桑托开背斜带为例[J]. 石油天然气学报, 2008, 30(1): 16-21. Zou Huayao, Hao Fang, Yang Shengu, et al. Overpressure Fluid-Discharging Pathes and Dissolved Pore Generation[J]. Journal of Oil and Gas Technology, 2008, 30(1): 16-21.

[3] 王波, 张荣虎, 任康绪, 等. 库车坳陷大北克拉苏深层构造带有效储层埋深下限预测[J]. 石油学报, 2011, 32(2): 212-218. Wang Bo, Zhang Ronghu, Ren Kangxu, et al. Prediction of the Lower Limit of Burial Depth for Effective Reservoirs in the Dabei-Kelasu Deep Structural Belt of Kuqa Depression[J]. Acta Petrolei Sinica, 2011, 32(2): 212-218.

[4] 张荣虎, 姚根顺, 寿建峰, 等. 沉积、成岩、构造一体化孔隙度预测模型[J]. 石油勘探与开发, 2011, 38(2): 145-151. Zhang Ronghu, Yao Genshun, Shou Jianfeng, et al. An Integration Porosity Forecast Model of Deposition, Diagenesis and Structure[J]. Petroleum Exploration and Development, 2011, 38(2): 145-151.

[5] 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 Reservoirs of Paleogene in Chezhen Depression[J]. Acta Sedimentologica Sinica, 2010, 28(4):752-761.

[6] Lu H F, Howell D G, Jia D, et al. Rejuvenation of the Kuqa Foreland Basin, Northern Flank of the Tarim Basin, Northern China[J]. International Geology Review, 1994, 36: 1151-1158.

[7] 赵靖舟. 前陆盆地天然气成藏理论及应用[M]. 北京:石油工业出版社, 2003: 7-15. Zhao Jingzhou. Reservoiring Theory of Natural Gas in Foreland Basins and Its Application[M]. Beijing: Petroleum Industry Press, 2003: 7-15.

[8] 程海燕. 库车褶皱冲断带西段盐底辟成因机制[J]. 吉林大学学报:地球科学版, 2014, 44(4): 1134-1141. Chen Haiyan. Salt Diapirs and Its Mechanism in the West of Kuqa Fold Thrust Belt, Northwest China[J]. Journal of Jilin University: Earth Science Edition, 2014, 44(4): 1134-1141.

[9] 朱玉新, 郭庆银, 邵新军, 等. 新疆塔里木盆地库车坳陷北缘白垩系储层沉积相研究[J]. 古地理学报, 2000, 2(4): 58-65. Zhu Yuxin, Guo Qingyin, Shao Xinjun, et al. Study on Reservoir Sedimentary Facies of the Cretaceous in the North of Kuqa Depression, Tarim Basin, Xinjiang[J]. Journal of Palaeogeography, 2000, 2(4): 58-65.

[10] 朱如凯, 郭宏莉, 高志勇, 等. 塔里木盆地北部地区中、新生界层序地层、沉积体系与储层特征[M]. 北京:地质出版社, 2009: 11. Zhu Rukai, Guo Hongli, Gao Zhiyong, et al. Mesozoic and Cenozoic Sequence Formation, Sedimentary System and Reservoir Characteristics in Northern Tarim Basin[M]. Beijing: Geological Publishing House, 2009: 11.

[11] 贾承造, 魏国齐, 李本亮, 等. 中国中西部两期前陆盆地的形成及其控气作用[J]. 石油学报, 2003, 24(2): 13-17. Jia Chengzao, Wei Guoqi, Li Benliang, et al. Tectonic Evolution of Two-Epoch Foreland Basin and Its Control for Natural Gas Accumulation in China's Mid-Western Areas[J]. Acta Petrolei Sinica, 2003, 24(2): 13-17.

[12] 付晓飞, 宋岩, 吕延防, 等. 塔里木盆地库车坳陷膏盐质盖层特征与天然气保存[J]. 石油实验地质, 2006, 28(1): 25-29. Fu Xiaofei, Song Yan, Lü Yangfang, et al. Rock Mechanic Characteristics of Gypsum Cover and Conservation Function to Gas in Kuche Depression, the Tarim Basin[J]. Petroleum Geology & Experiment, 2006, 28(1): 25-29.

[13] 胡文瑞. 低渗透油气田概论[M]. 北京: 石油工业出版社, 2009: 11-13. Hu Wenrui. Theory of Low-Permeability Reservoir[M]. Beijing: Petroleum Industry Press, 2009: 11-13.

[14] 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.

[15] 葸克来, 操应长, 周磊, 等. 廊固凹陷河西务构造带沙四上亚段有效储层成因机制[J]. 吉林大学学报:地球科学版, 2014, 44(5): 1451-1465. Xi Kelai, Cao Yingchang, Zhou Lei, et al. Genetic Mechanism of Effective Reservoirs in the Upper Part of the Fourth Member of Shahejie Formation in Hexiwu Structural Zone of Langgu Depression[J]. Journal of Jilin University: Earth Science Edition, 2014, 44(5): 1451-1465.

[16] 操应长, 王艳忠, 徐涛玉, 等. 东营凹陷西部沙四上亚段滩坝砂体有效储层的物性下限及控制因素[J]. 沉积学报,2009, 27(2): 230-237. Cao Yingchang, Wang Yanzhong, Xu Taoyu, et al. The Petrophysical Parameter Cutoff and Controlling Factors of the Effective Reservoir of Beach and Bar Sandbodies of the Upper Part of the Fourth Member of the Shahejie Formation in West Part of Dongying Depression[J]. Acta Sedimentologica Sinica, 2009, 27(2): 230-237.

[17] 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 Reservoir and Its Application: A Case Study on Zhongbu Gas Field in Ordos Basin[J]. Acta Sedimentologica Sinica, 1999, 17(3): 454-457.

[18] 于雯泉, 叶绍东, 陆梅娟. 高邮凹陷阜三段有效储层物性下限研究[J]. 复杂油气藏, 2011, 4(1): 5-9. Yu Wenquan, Ye Shaodong, Lu Meijuan. Study on Lower Limit of Physical Properties of E_1f₃ Effective Reservoir in Gaoyou Sag[J]. Complex Hydrocarbon Reservoirs, 2011, 4(1): 5-9.

[19] 沈扬, 马玉杰, 赵力彬, 等. 库车坳陷东部古近系白垩系储层控制因素及有利勘探区[J]. 石油与天然气地质, 2009, 30(2): 136-142. Shen Yang, Ma Yujie, Zhao Libin, et al. Controlling Factors of the Paleogene-Cretaceous Reservoirs and Potential Exploration Areas in the Eastern Kuqa Depression[J]. Oil & Gas Geology, 2009, 30(2): 136-142.

[20] 戴俊生, 冯建伟, 李明, 等. 砂泥岩间互地层裂缝延伸规律探讨[J]. 地学前缘, 2011, 18(2): 277-283. Dai Junsheng, Feng Jianwei, Li Ming, et al. Discussion on the Extension Law of Structural Fracture in Sand-Mud Interbed Formation[J]. Earth Science Frontiers, 2011, 18(2): 277-283.

[21] Osborne M J, Swarbrick R E. Diagenesis in North Sea HPHT Clastic Reservoirs-Consequences for Porosity and Overpressure Prediction[J]. Marine and Petroleum Geology, 1999, 16(2): 337-353.

[22] 王占国. 异常高压对储层物性的影响[J]. 油气地质与采收率, 2005, 12(6): 31-33. Wang Zhanguo. Influence of Abnormal High Pressure on Physical Properties of Reservoirs[J]. Petroleum Geology and Recovery Efficiency, 2005, 12(6): 31-33.

[23] 刘春, 张惠良, 韩波, 等. 库车坳陷大北地区深部碎屑岩储层特征及控制因素[J]. 天然气地球科学, 2009, 20(4): 504-512. Liu Chun, Zhang Huiliang, Han Bo, et al. Reservoir Characteristics and Control Factors of Deep-Burial Clastic Rocks in Dabei Zone of Kuche Sag[J]. Natural Gas Geoscience, 2009, 20(4): 504-512.

[24] 宋岩, 洪峰, 夏新宇, 等. 异常压力与油气藏的同生关系:以库车坳陷为例[J]. 石油勘探与开发, 2006, 33(3): 303-308. Song Yan, Hong Feng, Xia Xinyu, et al. Syngenesis Relationship Between Abnormal Overpressure and Gas Pool Formation[J]. Petroleum Geology & Experiment, 2006, 33(3): 303-308.

[25] 王良书, 李成, 刘绍文, 等. 塔里木盆地北缘库车前陆盆地地温梯度分布特征[J]. 地球物理学报, 2003, 46(3): 403-407. Wang Liangshu, Li Cheng, Liu Shaowen, et al. Geotemperature Gradient Distribution of Kuqa Foreland Basin, North of Tarim, China[J]. Chinese Journal of Geophysics, 2003, 46(3): 403-407.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed