Sub-layer correlation and stratum superposition patterns of pebbled sandstone section of Carboniferous Bachu Formation in Central Tarim 16 reservoir

Abstract

Abstract: The pebbled sandstone section is the major oil-producing interval of Carboniferous in the Central Tarim 16 reservoir. Due to small thickness and uncertain superposition pattern, sub-layer division and correlation there cannot come to an agreement after production, which has seriously affected the development programming and remaining oil potential tapping. In order to dissect the stratum superposition pattern of the pebbled sandstone section and the sub-layer distribution characteristics thereof, sub-layer division and correlation were conducted for the interval by integrating the geology and well logging data and newly processed 3D seismic data, and using the method of model guidance, cycle contrast, dynamic verification and regional closure. The results indicate that the pebbled sandstone section has the stratum superposition pattern of denudation after overlapping deposition. On the basis of comprehensive analysis of lithologic, cyclic and electrical properties of the sub-layers, and combining the marker beds for stratum correlation, the pebbled sandstone section was divided into five sub-layers in two sand groups from lower to upper. By analyzing the stratum correlation methods for different stratum superposition patterns, the “oblique correlation” method suitable for the study area was selected for correlation of sub-layers in the study area. The reliability of the division result was further validated by the existing dynamic production data. Moreover, the plane distribution scope of all five sub-layers were analyzed. It is found that the distribution scope decreases from lower to upper.

Key words: Central Tarim 16 reservoir, Donghe sandstone, pebbled sandstone section, overlapping, sedimentary patterns, sub-layer correlation

Yin Nanxin, Yin Zhijun, Han Tao, Hu Zeyun, Zhou Yongshui, Li Renpeng, Cao Cen, Chang Yuli. Sub-layer correlation and stratum superposition patterns of pebbled sandstone section of Carboniferous Bachu Formation in Central Tarim 16 reservoir[J]. China Petroleum Exploration, 2016, 21(6): 58-64.

References

[1] 赫德伯格 H D.国际地层指南[M].张守信，译.北京.科学出版社，1979. Hedberg H D. International stratigraphic guide[M]. Zhang Shouxin, Translation. Beijing: Science Press, 1979.
[2] 刘波，赵翰卿，于会宇. 储集层的两种精细对比方法讨论[J]. 石油勘探与开发，2000,27(6):94-96. Liu Bo, Zhao Hanqing, Yu Huiyu. Discussion on the two methods of detailed reservoir correlation[J]. Petroleum Exploration and Development, 2000,27(6):94-96.
[3] 王光付，战春光，刘显太，等. 精细地层对比技术在油藏挖潜中的应用[J]. 石油勘探与开发，2000,27(6):56-62. Wang Guangfu, Zhan Chunguang, Liu Xiantai, et al. The application of fine formation correlation to reservoir productivity improvement in oil field[J]. Petroleum Exploration and Development, 2000,27(6):56-62.
[4] 王招明，田军，申银民，等. 塔里木盆地晚泥盆世—早石炭世东河砂岩沉积相[J]. 古地理学报，2004,6(3):289-296. Wang Zhaoming, Tian Jun, Shen Yinmin, et al. Sedimentary facies of Donghe Sandstone during the Late Devonian to Early Carboniferous in Tarim Basin[J]. Journal of Palaeogeograhy, 2004,6(3):289-296.
[5] 朱筱敏，张强，赵澄林，等. 塔里木中部地区东河砂岩段沉积特征和沉积环境演变[J]. 地质科学，2004,39(1):27-35. Zhu Xiaomin, Zhang Qiang, Zhao Chenglin, et al. Sedimentary facies and environment changes of the Donghe Sandstone in central Tarim[J]. Chinese Journal of Geology, 2004,39(1):27-35.
[6] 顾家裕，张兴阳，郭彬程. 塔里木盆地东河砂岩沉积和储层特征及综合分析[J]. 古地理学报，2006,8(3):285-294. Gu Jiayu, Zhang Xingyang, Guo Bincheng, et al. Characteristics of sedimentation and reservoir of the Donghe Sandstone in Tarim Basin and their synthetic analysis[J]. Journal of Palaeogeograhy, 2006,8(3):285-294.
[7] 胡媛，张子明，王恩辉. 塔里木盆地不同类型斜坡带特征及其控油作用[J]. 岩性油气藏，2010,22(4):72-79. Hu Yuan, Zhang Ziming, Wang Enhui. Characteristics of different types of slope belt and its oil-control effect in Tarim Basin[J]. Lithologic Reservoirs, 2010,22(4):72-79.
[8] 朱怀诚，罗辉，王启飞，等. 论塔里木盆地“东河砂岩”的地质时代[J].地层学杂志, 2002,26(3):197-201. Zhu Huaicheng, Luo Hui, Wang Qifei, et al. The age of the Donghe Sandstone in the Tarim Basin[J]. Journal of Stratigraph, 2002,26(3):197-201.
[9] 尹楠鑫，徐怀民，伍轶鸣，等. 塔中16油藏东河砂岩段高精度层序地层划分与优质储层预测[J]. 天然气地球科学，2014,25(8):1172-1180. Yin Nanxin, Xu Huaimin, Wu Yiming, et al. High reseolution sequence stratigraphy and excellent reservoir distribution of the Donghe Sandstone reservoir in Tazhong16 reservor[J]. Natural Gas Geoscience, 2014,25(8):1172-1180.
[10] 杨松岭，高增海，赵秀岐.塔里木盆地东河砂岩层序特征与分布规律[J]. 新疆石油地质，2002,23(2):35-37. Yang Songling, Gao Zenghai, Zhao Xiuqi. The characteristic and distribution of Donghe Sandstone sequences in Tarim Basin[J]. Xinjiang Petroleum Geology, 2002,23(1):35-37.
[11] 肖朝晖，王招明，吴金才，等. 塔里木盆地石炭系层序地层划分及演化[J]. 石油实验地质，2011,33(3):244-248. Xiao Zhaohui, Wang Zhaoming, Wu Jincai, et al. Sequence stratigraphic division and evolution of Carboniferous in Tarim Basin[J]. Petroleum Geology & Experiment, 2011,33(3),244-254.
[12] 郭建华，王明艳，蒋小琼，等. 塔里木盆地塔中和满西地区石炭系层序地层[J]. 中南大学学报：自然科学版，2004,35(1):122-128. Guo Jianhua, Wang Mingyan, Jiang Xiaoqiong, et al. Sequence stratigrapy of the Carboniferous in Tazhong and Manxi areas of Tarim Basin[J]. Journal of Central South University: Science and Technology, 2004,35(1):122-128.
[13] 许杰，郭建华，何治亮. 塔里木盆地石炭系层序地层学研究[J].海洋地质动态，2008,24(10):19-28. Xu Jie, Guo Jianhua, He Zhiliang. Sequence straigraphy of Carboniferous in Tarim Basin[J]. Marine Geology Letters, 2008,24(10):19-28.
[14] 张惠良，杨海军，寿建峰，等. 塔里木盆地东河砂岩沉积期次及油气勘探[J]. 石油学报，2009,30(6):835-842. Zhang Huiliang, Yang Haijun, Shou Jianfeng, et al. Sedimentary periods of Donghe sandstone and hydrocarbon exploration in Tarim Basin[J]. Acta Petreolei Sinica, 2009,30(6),835-841.
[15] 朱小燕，李爱琴，段晓晨. 镇北油田延长组长3油层组精细地层划分与对比[J]. 岩性油气藏，2007,19(4):82-86. Zhu Xiaoyan, Li Aiqin, Duan Xiaochen, et al. Fine stratigraphic classification and correlation of Chang 3 reservoir of Yanchang Formation in Zhenbei oilfield[J]. Lithologic Reservoirs, 2007,19(4):82-86.
[16] 杜民，王改云，刘金萍，等. 北黄海盆地东部坳陷地层划分及沉积特征[J]. 特种油气藏，2014,21(2):51-56. Du Min, Wang Gaiyun, Liu Jinping, et al. Stratigraphic delineation and depositional characteristics in the eastern depression, North Yellow Sea Basin[J]. Special Oil & Gas Reservoirs, 2014,21(2):51-56.
[17] 周海民，廖保方. 冀东油田复杂断块油藏精细描述与实例[J]. 中国石油勘探，2005,10(5):5-12. Zhou Haimin, Liao Baofang. Fine description and study case of complex fault-block oil reservoir in Jidong oilfield[J]. China Petroleum Exploration, 2005,10(5):5-12.
[18] 赵振宇，孙远实，李程善，等. 鄂尔多斯盆地奥陶系地层划分与对比研究[J]. 特种油气藏，2015,22(5):9-17. Zhao Zhenyu, Sun Yuanshi, Li Chengshan, et al. Stratigraphic division and correlation of Ordovician system in Ordos Basin[J]. Special Oil & Gas Reservoirs, 2015,22(5):9-17.
[19] 王海成，李虎，李富友. 柴达木盆地南八仙油田精细地层对比[J]. 新疆石油天然气，2013,9(1):6-11. Wang Haicheng, Li Hu, Li Fuyou. The fine stratigraphy correlation of Nanbaxian oilfield Qaidam Basin[J]. Xinjiang Oil & Gas, 2013,9(1):6-11.