塔河油田奥陶系缝洞型储层小型缝洞及其充填物测井识别

doi:10.11743/ogg20120611

Abstract

Abstract:

Tahe oilfield is a famous marine Paleozoic giant oilfield dominated by paleokarstic reservoirs of the Ordovician carbonates.Caverns and fractures around them are the main pore space.Numerous small fracture-vugs act as important pore space and and flowpaths.Although the small fracture-vugs can be recognized on outcrops,cores and image logs,they are not readily recognizable in intervals without core and image logging data,seriously influencing the study of fractured-vuggy reservoirs and the establishment of accurate reservoir geological model.To tackle the problem,we calibrated the conventional logging data with cores and image logs and selected five vug-sensitive parameters and three fracture-sensitive parameters.These parameters were used to build a norma-lized and weighted function for identification of small fracture-vugs in Tahe oilfield.We used DEN-V_sh,R_LLD-V_sh cross plot method to recognize the types of fillings,including clastics,breccias and chemical fillings.The results of recognition are fairly good compared with that from core observation and image log interpretation.The vug recognition rate is above 81%,fracture recognition rate is larger than 82%,and cave fills recognition rate is over 84%.The method can meet the basic requirements for identification of small vugs and fractures.The application of the method to 117 wells in Tahe oilfield proves to be quite encouraging and the results also show the potential of the method for identification of caverns and fractures with a height over 0.5 meters and their fillings.It provides a new approach for fine study of reservoir space of paleokarstic reservoirs.

Key words: small fracture-vug, filling, well logging data, fractured-vuggy reservoir, Ordovician, Tahe oilfield

CLC Number:

TE122.1

Tian Fei, Jin Qiang, Li Yang, Zhang Hongfang, Zhang Wenbo. Identification of small fracture-vugs and their fillings through log interpretation in fractured-vuggy Ordovician reservoirs in Tahe oilfield[J]. Oil & Gas Geology, 2012, 33(6): 900-908.

References

[1] Craig D H.Caves and other Features of Permian karst in sand andres dolomite,Yates field reservoir,West Texas [M]//James N P ,Choquette.Paleokarst.Springer-Verlag,1988:342-363.
[2] Loucks R G.Modern analogs for paleocave-sediment fills and their importance in identifying paleocave reservoirs [J].Gulf Coast Association of Geological Societies Transactions,2001,(46):195-206.
[3] Loucks R G.A review of coalesced,collapsed-paleocave systems and associated suprastratal deformation [J].Acta Carsologica,2007,36(1):121-132.
[4] Loucks R G.Paleocave carbonate reservoirs:origins,burial-depth modifications,spatial complexity,and reservoir implications [J].AAPG Bulletin,1999,83(11):1795-1834.
[5] Hongliu Zeng,Loucks R G,Xavier Janson,et al.Three-dimensional seismic geomorphology and analysis of the Ordovician paleokarst drainage system in the central Tabei Uplift,northern Tarim Basin western China [J].AAPG Bulletin,2011,95(12):2061-2083.
[6] 赵军,肖承文,虞兵,等.轮古地区碳酸盐岩洞穴型储层充填程度的测井评价 [J].石油学报,2011,32(4):605-610. Zhao Jun,Xiao Chengwen,Yu Bing et al.Logging evaluation on filling degree of cavernous carbonate reservoirs in the Lungu region [J].Acta Petrolei Sinica,2011,32(4):605-610.
[7] 李阳.塔河油田奥陶系碳酸盐岩溶洞型储集体识别及定量表征 [J].中国石油大学学报(自然科学版),2012,36(1):1-7. Li Yang.Ordovician carbonate fracture-cavity reservoirs identification and quantitative characterization in Tahe Oilfield [J].Journal of China University of Petroleum(Edition of Natural Science),2012,36(1):1-7.
[8] 李阳,范智慧.塔河奥陶系碳酸盐岩油藏缝洞系统发育模式与分布规律 [J].石油学报,2011,32(1):101-106. Li Yang,Fan Zhihui.Developmental pattern and distribution rule of the fracture-cavity system of Ordovician carbonate reservoirs in the Tahe oilfield [J].Acta Petrolei Sinica,2011,32(1):101-106.
[9] 翟晓先.塔里木盆地塔河特大型油气田勘探实践与认识 [J].石油实验地质,2011,33(4):323-331. Zhai Xiaoxian.Exploration practice and experience of Tahe giant oil-and-gas field,Tarim Basin [J].Petroleum Geology & Experiment,2011,33(4):323-331.
[10] 鲁新便,赵敏,胡向阳,等.碳酸盐岩缝洞型油藏三维建模方法技术研究——以塔河奥陶系缝洞型油藏为例[J].石油实验地质,2012,34(2):193-198. Lu Xinbian,Zhao Min,Hu Xiangyang,et al.Studies of 3D reser-voir modeling:taking Ordovician carbonate fractured-vuggy reservoirs in Tahe Oil Field as an example [J].Petroleum Geology & Experiment,2012,34(2):193-198.
[11] Shen Feng,Qi Lixin,Han Gehua.Characterization and preservation of karst networks in the carbonate reservoir modeling //SPE annual technical conference and exhibition,California,U S,2007.
[12] 何治亮,彭守涛,张涛.塔里木盆地塔河地区奥陶系储层形成的控制因素和复合-联合成因机制 [J].石油与天然气地质,2010,31(6):743-752. He Zhiliang,Peng Shoutao,Zhang Tao.Controlling factors and genetic pattern of the Ordovician reservoirs in the Tahe area,Tarim Basin [J].Oil ＆ Gas Geology,2010,31(6):743-752.
[13] Dixon J W.The role of small caves as bat hibernacula in Iowa [J].Journal of Cave and Karst Studies,2011,73(1):21-27.
[14] 鲁新便,蔡忠贤.缝洞型碳酸盐岩油藏古溶洞系统与油气开发——以塔河碳酸盐岩溶洞型油藏为例 [J].石油与天然气地质,2010,(01):22-27. Lu Xinbian,Cai Zhongxian.A study of the paleokarst system in the fractured-vuggy carbonate reservoirs and oil/gas develo-pmeat-taking the reservoirs in Tahe oilfield as an example [J].Oil & Gas Geology,2010,31(1):22-27.
[15] Tihansky A B.Sinkholes,west-central Florida-A link between surface water and ground water [M]// Galloway,Devin,Jones,et al.Land Subsidence in the United States.U.S.Geological Survey,1999:121-141.
[16] 徐微,蔡忠贤,贾振远,等.塔河油田奥陶系碳酸盐岩油藏溶洞充填物特征 [J].现代地质,2010,24(2):287-293. Xu Wei,Cai Zhongxian,Jia Zhenyuan,et al.The study on Ordovician carbonate reservoir karst cavern fillings characterization in Tahe oilfield[J].Geoscience,2010,24(2):287-293.
[17] 肖玉茹,何峰煜,孙义梅.古洞穴型碳酸盐岩储层特征研究——以塔河油田奥陶系古洞穴为例 [J].石油与天然气地质,2003,24 (1):75-80. XiaoYuru,He Fengyi,Sun Yimei.Reservoir characteristics of paleocave carbonates a case study of Ordovician paleocave in Tahe oilfield,Tarim Basin [J],Oil & Gas Geology,2003,24(1):75-80.
[18] Tan Maojin,Gao Jie,Wang Xiaochang,et al.Numerical simulation of the dual laterolog for carbonate cave reservoirs and response characteristics [J].Applied Geophysics ,2011,8(1):79-85.
[19] 樊政军,柳建华,张卫峰.塔河油田奥陶系碳酸盐岩储层测井识别与评价 [J].石油与天然气地质,2008,29(1):61-65. Fan Zhengjun,Liu Jianhua,ZhangWeifeng.Log interpretation and evaluation of the Ordovician carbonate rock reservoirs in Tahe oilfield[J].Oil & Gas Geology,2008,29(1):61-65.
[20] Yang Haijun,Sam Zandong Sun,Cai Lu-lu,et al A new method of formation evaluation for fractured and caved carbonate reservoirs A case study from the Lundong area,Tarim Basin,China [J].Petroleum science,2011,21(8):446-454.
[21] Sibbit AM,Faivre Q.The dual Laterolog Response in Fractured Rocks //SPWLA 26th Annual Logging Symposium,Dallas,Texas,1985:17-20.
[22] Wu Xinsong ,Yang Lei ,Pan Wenqing.Logging Geology Study of the Caverned Paleokarst Reservoir Distribution [J].Petro-leum Science,2005,2(2):71-75.
[23] 詹俊阳,马旭杰,何长江.塔河油田缝洞型油藏开发模式及提高采收率[J].石油与天然气地质,2012,33(4):655-660. Zhan Junyang,Ma Xujie,He Changjiang.Development scheme and EOR technique of fracture-vug reservoirs in Tahe oilfield[J].Oil & Gas Geology,2012,33(4):655-660.

Identification of small fracture-vugs and their fillings through log interpretation in fractured-vuggy Ordovician reservoirs in Tahe oilfield

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

[1]	Pengyuan HAN, Wenlong DING, Debin YANG, Juan ZHANG, Hailong MA, Shenghui WANG. Characteristics of the S80 strike-slip fault zone and its controlling effects on the Ordovician reservoirs in the Tahe oilfield， Tarim Basin [J]. Oil & Gas Geology, 2024, 45(3): 770-786.
[2]	Wenlong DING, Yuntao LI, Jun HAN, Cheng HUANG, Laiyuan WANG, Qingxiu MENG. Methods for high-precision tectonic stress field simulation and multi-parameter prediction of fracture distribution for carbonate reservoirs and their application [J]. Oil & Gas Geology, 2024, 45(3): 827-851.
[3]	Debin YANG, Xinbian LU, Dian BAO, Fei CAO, Yan WANG, Ming WANG, Runcheng XIE. New insights into the genetic types and characteristics of the Ordovician marine fault-karst carbonate reservoirs in the northern Tarim Basin [J]. Oil & Gas Geology, 2024, 45(2): 357-366.
[4]	Changjian ZHANG, Debin YANG, Lin JIANG, Yingbing JIANG, Qi CHANG, Xuejian MA. Characteristics and origin of over-dissolution residual fault-karst reservoirs in the northern Tahe oilfield， Tarim Basin [J]. Oil & Gas Geology, 2024, 45(2): 367-383.
[5]	Junyu WAN, Jianhui ZHU, Suping YAO, Yi ZHANG, Chuntang LI, Wei ZHANG, Haijian JIANG, Jie WANG. Geobiological evaluation of hydrocarbon-generating organisms and source rocks in the Ordovician Majiagou Formation， east-central Ordos Basin [J]. Oil & Gas Geology, 2024, 45(2): 393-405.
[6]	San ZHANG, Qiang JIN, Jinxiong SHI, Mingyi HU, Mengyue DUAN, Yongqiang LI, Xudong ZHANG, Fuqi CHENG. Filling patterns and reservoir property of the Ordovician buried-river karst caves in the Tabei area， Tarim Basin [J]. Oil & Gas Geology, 2023, 44(6): 1582-1594.
[7]	Zhijiang KANG, Dongmei ZHANG, Zhenkun ZHANG, Ruiqi WANG, Wenbing JIANG, Kunyan LIU. Intelligent prediction of inter-well connectivity path in deep fractured-vuggy reservoirs [J]. Oil & Gas Geology, 2023, 44(5): 1290-1299.
[8]	Faqi HE, Wei ZHANG, Xiaoqi DING, Zhuangzhuang QI, Chuntang LI, Hanjing SUN. Controlling mechanism of Wushenqi paleo-uplift on paleo-karst gas reservoirs in Ordos Basin [J]. Oil & Gas Geology, 2023, 44(2): 276-291.
[9]	Bin LI, Xingxing ZHAO, Guanghui WU, Jianfa HAN, Baozhu GUAN, Chunguang SHEN. Differential hydrocarbon accumulation model of the Ordovician in Tazhong Ⅱ block， Tarim Basin [J]. Oil & Gas Geology, 2023, 44(2): 308-320.
[10]	Caineng ZOU, Zengye XIE, Jian LI, Lu ZHANG, Chunlong YANG, Huiying CUI, Xiaobo WANG, Zeqing GUO, Songqi PAN. Differences and main controlling factors of large-scale gas accumulations in typical giant carbonate gas fields： A case study on Anyue gas field in the Sichuan Basin and Jingbian gas field in the Ordos Basin [J]. Oil & Gas Geology, 2023, 44(1): 1-15.
[11]	Tao ZHANG, Yaxiong ZHANG, Xiaohui JIN, Yan ZHOU, Juntao ZHANG, Ning GU, Wei ZHANG, Ruyue WANG, Kai LU. Sequence stratigraphy models of carbonate-evaporite successions and their controls on source rocks and reservoirs in the Ordovician Majiagou Formation， Ordos Basin [J]. Oil & Gas Geology, 2023, 44(1): 110-124.
[12]	Mingchuan WANG, Taizhong DUAN. Facies sequence-based MPS reservoir facies modeling algorithm and its application [J]. Oil & Gas Geology, 2023, 44(1): 238-246.
[13]	Chunlin ZHANG, Fengcun XING, Yueqiao ZHANG, Fujie JIANG, Wanglin XU, Amin ZHANG. Tectonic evolution of Qingyang and Wushenqi paleo-uplifts during the Early Paleozoic and its control on Cambrian lithofacies paleogeography in the Ordos Basin [J]. Oil & Gas Geology, 2023, 44(1): 89-100.
[14]	Bingyu Ji, Songqing Zheng, Hao Gu. On the development technology of fractured-vuggy carbonate reservoirs：A case study on Tahe oilfield and Shunbei oil and gas field [J]. Oil & Gas Geology, 2022, 43(6): 1459-1465.
[15]	Yu Zhang, Haiying Li, Xiuping Chen, Xuqiang Bu, Jun Han. Practice and effect of geology-engineering integration in the development of ultra-deep fault-controlled fractured-vuggy oil/gas reservoirs， Shunbei area， Tarim Basin [J]. Oil & Gas Geology, 2022, 43(6): 1466-1480.