岩溶洞穴型储层发育期次识别技术及应用

doi:10.3969/j.issn.1672-7703.2018.03.013

摘要/Abstract

摘要： 岩溶洞穴型储层连通性识别难，影响高效开发，其根本的问题在于对岩溶洞穴型储层发育期次的识别及其分布规律认识不清。采用岩溶洞穴型储层分层解释的方法对不同发育期次岩溶洞穴型储层分布进行预测，首先，在洞穴层主要受潜流面控制这一认识的基础上，恢复古地貌，按古地貌由高到低顺序选取代表井，确定岩溶排泄基准面，划分单井洞穴层；其次，选取等时沉积界面，拉平地震数据体，将单井洞穴层标定在地震剖面上；最后，精细解释出洞穴层，提取振幅均方根属性，预测每一层储层的平面分布。在分析单层洞穴分布规律的基础上，分析岩溶洞穴型储层的连通性，在塔里木盆地LGX地区奥陶系识别出22个缝洞单元，为油藏高效开发提供技术支持。

关键词: 古岩溶, 潜流面, 洞穴分层, 地震解释

Abstract: The connectivity of karst cave reservoirs is diffcult to identify and affects their effective development. The root causes are attributed to the unclear identifcation of the development periods and distribution rules of the karst cave reservoirs. The method of layered interpretation of karst cave reservoirs was used to predict the distribution of the karst cave reservoirs in different periods. First, on the basis of the knowledge that the cave layers are mainly controlled by underflow surfaces, the paleogeomorphology was restored, and then representative wells were selected from high to low paleogeomorphologic structures, the karst discharge datum was determined, and the cave layers were divided into single wells; second, according to the isochronal sedimentary interfaces, seismic data volumes were flattened, and the cave layers for single wells were calibrated on seismic sections; and fnally, the cave layers were fnely interpreted, the RMS amplitude was extracted, and the lateral distribution of every reservoir layer was predicted. Based on the distribution law of single-layer caves, the connectivity of karst cave reservoirs was analyzed, and 22 Ordovician fracture-cave reservoir units were identifed in the LGX area in the Tarim Basin. This may provide technical support for the effective development of the reservoirs.

Key words: paleokarst, underflow surface, cave stratifcation, seismic interpretation

中图分类号:

常少英, 邓兴梁, 常中英, 曹鹏, 曹小初. 岩溶洞穴型储层发育期次识别技术及应用[J]. 中国石油勘探, 2018, 23(3): 109-114.

Chang Shaoying, Deng Xingliang, Chang Zhongying, Cao Peng, Cao Xiaochu. The identifcation technology for developmental periods of karst cave reservoirs and its application[J]. China Petroleum Exploration, 2018, 23(3): 109-114.

参考文献

[1] 王宏斌,张虎权,孙东,龚洪林,王振卿,李闯,等.风化壳岩溶储层地质-地震综合预测技术与应用[J].天然气地球科学,2009,20(1):131-137. Wang Hongbin, Zhang Huquan, Sun Dong, Gong Honglin, Wang Zhenqing, Li Chuang, et al. Application of integrated seismic geology prediction techniques to weathering crust karst reservoir[J]. Natural Gas Geoscience, 2009,20(1):131-137.
[2] 袁胜辉,唐传章,葛黛薇,崔宏良,李小艳,周璐.冀中坳陷深潜山及其内幕地震勘探技术研究[J].中国石油勘探,2013,18(1):39-43. Yuan Shenghui, Tang Chuanzhang, Ge Daiwei, Cui Hongliang, Li Xiaoyan, Zhou Lu. Study of seismic exploration technology for deep buried hills and their inner curtains of Jizhong depression[J]. China Petroleum Exploration, 2013,18(1):39-43.
[3] 满安静.碳酸盐岩潜山储层预测技术在Kab油田的应用[J].特种油气藏,2016,23(3):57-60. Man Anjing. Application of carbonate buried-hill reservoir in Kab oilfield[J]. Special Oil & Gas Reservoirs, 2016,23(3):57-60.
[4] 邱隆伟,刘镠,师政,张红臣.基于残余岩溶指数的表生岩溶储层综合评价及有利区带预测——以南堡凹陷下古生界碳酸盐岩潜山为例[J].油气地质与采收率,2016,23(3):22-27. Qiu Longwei, Liu Liu, Shi Zheng, Zhang Hongchen. Comprehensive evaluation of supergene karst reservoir based on residual karst index and prediction of favorable zone:a case study on carbonate buried hill of the Lower Paleozoic in Nanpu sag[J]. Petroleum Geology and Recovery Efficiency, 2016,23(6):22-27.
[5] 钟国城,韩强,蒲仁海,毕英爽,高冬.新和南部地区白垩系地震烃类检测与有利区预测[J].特种油气藏,2017,24(1):58-63. Zhong Guocheng, Han Qiang, Pu Renhai, Bi Yingshuang, Gao Dong. Seismic hydrocarbons detection and prediction of favorable targets in Cretaceous formations in southern parts of Xinhe area[J]. Special Oil & Gas Reservoirs, 2017,24(1):58-63.
[6] 陈利新,潘文庆,梁彬,罗日升,张庆玉,高翔,等.轮南奥陶系潜山表层岩溶储层的分布特征[J].中国岩溶,2011,30(3):327-333. Chen Lixin, Pan Wenqing, Liang Bin, Luo Risheng, Zhang Qinyu,Gao Xiang, et al. The distribution characteristics of the epikarst reservoir in Lunnan Ordovician buried hill[J]. Carsologica Sinca, 2011,30(3):327-333.
[7] 中国地质科学院岩溶地质研究所.桂林岩溶与碳酸盐岩[M].重庆:重庆出版社,1987:1-180. Karst Geology Research Institute in Chinese Academy of Geological Sciences. Karst and carbonate rocks in Guilin[M]. Chongqing:Chongqing Publishing House, 1987:1-180.
[8] 朱学稳.桂林岩溶地貌与洞穴研究[M]. 北京:地质出版社,1988:1-149. Zhu Xuewen. Karstland form and caves in Guilin[M]. Beijing:Geological Publishing House, 1988:1-249.
[9] 罗晓容,张立宽,雷裕红,胡才志,施辉,曹斌风.储层结构非均质性及其在深层油气成藏中的意义[J].中国石油勘探,2016,21(1):28-36. Luo Xiaorong, Zhang Likuan, Lei Yuhong, Hu Caizhi, Shi Hui, Cao Binfeng. Structural heterogeneity of reservoirs and its implication on hydrocarbon accumulation in deep zones[J]. China Petroleum Exploration, 2016,21(1):28-36.
[10] 张君龙.碳酸盐岩层序沉积演化及海平面的控制作用——以塔里木盆地古城地区奥陶系为例[J].天然气工业,2017,37(1):46-53. Zhang Junlong. Carbonate sequence sedimentary evolution and control of sea level:a case study of Ordovician in the Gucheng area, Tarim Basin[J]. Natural Gas Industry, 2017,37(1):46-53.
[11] 方杰,吴小洲,王居峰.黄骅坳陷下古生界深潜山油气聚集条件及成藏因素分析[J].中国石油勘探,2013,18(4):11-18. Fang Jie, Wu Xiaozhou, Wang Jufeng. Accumulation conditions and reservoiring factors of deep buried hills of Lower Paleozoic in Huanghua depression[J]. China Petroleum Exploration, 2013,18(4):11-18.
[12] 傅恒,韩建辉,孟万斌,冯明石,郝雷,高雁飞,关月珊.塔里木盆地塔中北坡奥陶系碳酸盐岩岩溶储层的形成机理[J].天然气工业, 2017,37(3):25-36. Fu Heng, Han Jianhui, Meng Wanbin, Feng Mingshi, Hao Lei, Gao Yanfei & Guan Yueshan. Forming mechanism of the Ordovician karst carbonate reservoirs on the northern slope of Central Tarim Basin[J]. Natural Gas Industry, 2017,37(3):25-36.
[13] 韩杰,吴萧,江杰,张敏,敬兵.塔中Ⅰ号气田西部鹰山组碳酸盐岩储层类型划分及储层连续性分析[J].油气地质与采收率,2016, 23(1):14-21. Han Jie, Wu Xiao, Jiang Jie, Zhang Min, Jing Bing. Classification and continuity analysis on carbonate reservoir of the Yingshan Formation in the western Tazhong I gasfield[J]. Petroleum Geology and Recovery Efficiency, 2016,23(1):14-21.
[14] 顾家裕.塔里木盆地轮南地区下奥陶统碳酸盐岩岩溶储层特征及形成模式[J].古地理学报,1999,1(1):54-60. Gu Jiayu. Characteristics and evolutional model of karst reservoirs of Lower Ordovician carbonate rocks in Lunnan area of Tarim Basin[J]. Journal of Palaeo geography, 1999,1(1):54-60.
[15] 尚凯,曹自成,云露,吕海涛,沙旭光.塔中西北部良里塔格组碳酸盐岩储层类型及主控因素[J].油气地质与采收率,2017,24(4):49-54. Shang Kai, Cao Zicheng, Yun Lu, Lü Haitao, Sha Xuguang. Types and main controlling factors of carbonate reservoir in the Lianglitage Formation,the northwest of central Tarim Basin[J]. Petroleum Geology and Recovery Efficiency, 2017,24(4):49-54.
[16] 吕海涛,张达景,杨迎春.塔河油田奥陶系油藏古岩溶表生作用期次划分[J].地质科技情报,2009,28(6):71-75. Lv Haitao, Zhang Dajing, Yang Yingchun. Stages of paleokarstichy pergenesis' in Ordovician reservoir Tahe oilfield[J]. Journal of Geological Science and Technology Information, 2009,28(6):71-75.
[17] 何君,韩剑发,潘文庆.轮南古隆起奥陶系潜山油气成藏机理[J].石油学报,2007,28(2):44-48. He Jun, Han Jianfa, Pan Wenqing. Hydrocarbon accumulation mechanism in the giant buried hill of Ordovician in Lunnan paleohigh of Tarim Basin[J]. Acta Petrolei Sinica, 2007,28(2):44-48.
[18] 朱光有,杨海军,朱永峰,顾礼敬,卢玉红,苏进,等.塔里木盆地哈拉哈塘地区碳酸盐岩油气地质特征与富集成藏研究[J].岩石学报, 2011,27(3):827-844. Zhu Guangyou, Yang Haijun, Zhu Yongfeng, Gu Lijing, Lu Yuhong, Su Jin, et al. Study on petroleum geological characteristics and accumulation of carbonate reservoirs in Halahatang area, Tarim Basin[J]. J Acta Petrologica Sinica, 2011,27(3):827-844.
[19] 张学丰,李明,陈志勇,姜华,唐俊伟,刘波,等.塔北哈拉哈塘奥陶系碳酸盐岩岩溶储层发育特征及主要岩溶期次[J].岩石学报, 2012,28(3):815-826. Zhang Xuefeng, Li Ming, Chen Zhiyong, Jiang Hua, Tang Junwei, Liu Bo, et al. Characteristics and karstification of the Ordovician carbonate reservoir, Halahatang area, Northern Tarim Basin[J] Acta Petrologica Sinica, 2012,28(3):815-826.
[20] 李国会,袁敬一,罗浩渝,杨鹏飞,李阳.塔里木盆地哈拉哈塘地区碳酸盐岩缝洞型储层量化雕刻技术[J].中国石油勘探,2015,20(4):24-29. Li Guohui, Yuan Jingyi, Luo Haoyu, Yang Pengfei, Li Yang. Quantitative description technology for fracture-cavity carbonate reservoirs in Halahatang area, Tarim Basin[J].China Petroleum Exploration, 2015,20(4):24-29.
[21] 闫相宾,韩振华,李永宏.塔河油田奥陶系油藏的储层特征和成因机理探讨[J].地质论评,2002,48(6):626-629. Yan Xiangbin, Han Zhenghua, Li Yonghong. Reservoir characteristics and formation me chanism s of the Ordovician carbonate pools in the Tahe oilfield[J]. Geological Review, 2002,48(6):626-629.
[22] 何治亮,金晓辉,沃玉进,李慧莉,白振瑞,焦存礼,等.中国海相超深层碳酸盐岩油气成藏特点及勘探领域[J].中国石油勘探,2016, 21(1):3-14. He Zhiliang, Jin Xiaohui, Wo Yujin, Li Huili, Bai Zhenrui, Jiao Cunli, et al. Hydrocarbon accumulation characteristics and exploration domains of ultra-deep marine carbonates in China[J]. China Petroleum Exploration, 2016,21(1):3-14.
[23] 龙昱光,张研,董世泰.勘探、评价、开发阶段地震技术应用关键问题分析[J].中国石油勘探,2016,21(6):9-17. Long Yuguang, Zhang Yan, Dong Shitai. Key issues in application of seismic technology in petroleum exploration, appraisal and development stages[J]. China Petroleum Exploration, 2016,21(6):9-17.
[24] 易立,刘震,邹才能.裂隆耦合控藏——碳酸盐岩台地内边缘礁滩大气田成藏模式[J].中国石油勘探,2016,21(1):44-52. Yi Li, Liu Zhen, Zou Caineng. Joint control over reservoirs by faults and uplifts:formation of large-scale gas reservoirs in marginal reefs of carbonate tableland[J]. China Petroleum Exploration, 2016,21(1):44-52.