Reef reservoir and fluid identification technology and its application to no-well deep water area in Western South China Sea
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摘要:
南海西部深水区生物礁油气藏潜力巨大，但对生物礁储层的物性、流体识别，前人较少研究，为了更深入地对该区生物礁油气藏进行评估，本次研究采用古地貌控制下地震反射特征点到面对比，识别逐级抬升的松南低凸起区发育了大范围生物礁；深度偏移速度认为生物礁具有顶底面显高速、内部显低速且分布不均的特征；基于Berryman(1992)和Kuster-Toksöz(1974)模型的岩石物理正演模拟和无井反演半定量判断研究区储层为中—低孔隙度生物礁。依据叠前弹性反演，结合Vp/Vs属性异常范围和深度构造的匹配关系，预测含油气范围位于生物礁群的南部。
Abstract:Deep-water bioreef reservoirs in the western South China Sea have great oil and gas potential. However, the physical properties of and the fluid in the reef reservoirs remain difficult to be identified though great endeavors have been made by predecessors. In this study, the correlation of seismic reflection characteristics from a point to an area is carried out based on paleo-geomorphological background. Large reefs were found in the stepped Songnan low uplift. As the depth migration velocity is considered, bioreefs should be bounded by high velocity boundaries with an inner part of uneven low velocity. Based on the results of petrophysical forward modeling and semi-quantitative judgment by well-free inversion from Berryman (1992) and Kuster-Toksöz (1974) model, it is found that the reservoirs are dominated by medium-low porosity reefs. Prestack elastic inversion, combined with the pursuit of matching relationship between Vp/Vs attribute anomalies and deep structures, it is predicted that the hydrocarbon-bearing area should be located in the southern part of the reef group. Combining paleo- geomorphology together with seismic velocity, forward and inversion processing, a set of technology system suitable for bioreef reservoir and fluid identification in a well free deepwater areas in the western South China Sea was developed, with which some reef lithologic traps have been found in the Songnan low bulge area of Qiongdongnan Basin.
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Key words:
- reef /
- forward /
- no-well inversion /
- velocity spectrum /
- Vp/Vs
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表 1 不同孔隙、不同含油气条件下生物礁储层速度
Table 1. Reef reservoir velocity under different hydrocarbon and pore conditions
孔隙度/% 灰岩骨架速度/(m/s) 水速度/
(m/s)油速度/
(m/s)气层速度/
(m/s)含水储层速度/(m/s) 含油50%储层速度/(m/s) 含气60%储层速度/(m/s) 含气70%储层速度/(m/s) 5 7050 1500 1180 430 6141 6000 4934 4778 10 7050 1500 1180 430 5439 5234 3796 3614 15 7050 1500 1180 430 4930 4690 3132 3024 20 7050 1500 1180 430 4428 4162 2596 2429 30 7050 1500 1180 430 3734 3454 1973 1830 
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[1] 张广旭, 吴时国, 朱伟林, 等.南海北部陆坡流花碳酸盐台地地球物理响应[J].海洋地质与第四纪地质, 2011, 31(4):106- 112. http://www.cnki.com.cn/Article/CJFDTotal-HYDZ201104018.htm
ZHANG Guangxu, WU Shiguo, ZHU Weilin, et al.Geophysical response of the liuhua carbonate platform in northern South China Sea[J].Marine Geology & Quaternary Geology, 2011, 31(4):106-112. http://www.cnki.com.cn/Article/CJFDTotal-HYDZ201104018.htm
[2] 朱从军, 宋金甫, 等.西北巴拉望盆地生物礁地震剖面特征与油气检测技术[J].海洋石油, 2014, 3:61-65. doi: 10.3969/j.issn.1008-2336.2014.03.061
ZHU Congjun, SONG Jinpu, et al.Seismic profile characteristics of reefs and hydrocarbon detection technology in northwest Palawan Basin[J]. Offshore Oil, 2014, 3:61-65. doi: 10.3969/j.issn.1008-2336.2014.03.061
[3] 姚根顺, 袁圣强, 吴时国, 等.琼东南盆地深水区双物源沉积模式及勘探前景[J].石油勘探与开发, 2008, 35(6):685-691. doi: 10.3321/j.issn:1000-0747.2008.06.008
YAO Genshun, YUAN Shenqiang, WU Shiguo, et al.Doube provenance depositional model and exploration prospect in deepwater area of Qiongdongnan Basin[J]. Petroleum Exploration and Development, 2008, 35(6):685-691. doi: 10.3321/j.issn:1000-0747.2008.06.008
[4] 马玉波, 吴时国, 许建龙, 等.琼东南盆地南部深水凹陷生物礁及碳酸盐岩台地发育模式[J].天然气地球科学, 2009, 20(1):119-124. http://d.old.wanfangdata.com.cn/Periodical/trqdqkx200901019
MA Yubo, WU Shiguo, XU Jianlong, et al.Distribution and model of reef and carbonate platfroms in the South Deepwater sag of Qiongdongnan Basin[J].Natural Gas Geoscience, 2009, 20(1):119-124. http://d.old.wanfangdata.com.cn/Periodical/trqdqkx200901019
[5] 唐武, 王英民, 杨彩虹, 等.琼东南盆地南部深水区生物礁演化规律及主控因素[J].天然气地球科学, 2013, 5:965-972. http://d.old.wanfangdata.com.cn/Periodical/trqdqkx201305012
TANG Wu, WANG Yingmin, YANG Caihong, et al.Evolution and main controlling factors of reef in the Southern Deepwater of Qiongdongnan basin [J].Natural Gas Geosciences, 2013, 5:965-972. http://d.old.wanfangdata.com.cn/Periodical/trqdqkx201305012
[6] 伊万顺, 邓艳涛, 狄邦让.琼东南盆地南部隆起带丘状地震相成因讨论[J].石油物探, 2012, 2:199-203. doi: 10.3969/j.issn.1000-1441.2012.02.014
YI Wanshun, DEND Yantao, DI Bangrang. Discussion on the genesis of domal reflections at the uplift zone of the Southern Qiongdongnan Basin.[J].Geophysical Prospecting for Petroleum, 2012, 2:199-203. doi: 10.3969/j.issn.1000-1441.2012.02.014
[7] 周兴海, 余学兵, 等.琼东南盆地深水区生物礁生长环境及分布特征分析[J].海洋石油, 2013, 4:1-5. http://d.old.wanfangdata.com.cn/Periodical/hysy201304001
ZHOU Xinhai, YU Xuebing et al.Study on reef growth environment and distribution characteristic in deepwater area of the Qiongdongnan Basin [J].Offshore Oil, 2013, 4:1-5. http://d.old.wanfangdata.com.cn/Periodical/hysy201304001
[8] 田世存, 王英民.琼东南盆地生物礁的识别和分布演化特征[J].特种油气藏, 2012(6):40-44. doi: 10.3969/j.issn.1006-6535.2012.06.009
TIAN Shicun, WANG Yingming.Identification and Distribution Evolution Characteristics of Bioherm of South Basin of Qiongdongnan[J].Special Oil and Gas Reservoirs, 2012(6):40-44. doi: 10.3969/j.issn.1006-6535.2012.06.009
[9] 邱燕, 王英民.南海第三纪生物礁分布与古构造和古环境[J].海洋地质与第四纪, 2001, 21(1):65-73. http://d.old.wanfangdata.com.cn/Periodical/hydzydsjdz200101011
QIU Yan, WANG Yingming.Reefs and paleostructure and paleoenvironment in South China Sea[J].Marine Geology & Quaternary Geology, 2001, 21(1):65-73. http://d.old.wanfangdata.com.cn/Periodical/hydzydsjdz200101011
[10] 张永贵, 宋在超, 周小进, 等.琼东南盆地南部中新统生物礁的识别[J].石油实验地质, 2011, 33(3):307-309. doi: 10.3969/j.issn.1001-6112.2011.03.017
ZHANG Yonggui, SONG Zaichao, ZHOU Xiaojing, et al.Identification of reef in Miocene, south of Qiongdongnan Basin[J].Petroleum Geology & Experiment, 2011, 33(3):307-309. doi: 10.3969/j.issn.1001-6112.2011.03.017
[11] 陆基孟, 王永刚.地震勘探原理[M].东营:中国石油大学出版社, 2009:256-258.
LU Jimeng, WANG Yonggang.The Principle of Seismic (In Chinese)[M].Dongying: Petorleum Industry Press, 2009:256-258.
[12] 李振春, 郭朝斌, 张凯, 等.论碳酸盐岩探区时间域速度分析[J].地球物理学进展, 2011, 26(2):549-556. doi: 10.3969/j.issn.1004-2903.2011.02.020
LI Zhenchun, GUO Zhaobin, ZHANG Kai, et al.To obtain accurate seismic velocityfied in karst exploration area[J].Progress in Geophysics(In Chinese), 2011, 26(2):549-550 doi: 10.3969/j.issn.1004-2903.2011.02.020
[13] 翟世奎, 米立军, 等.西沙石岛生物礁的矿物组成及其环境指示意义[J].地球科学-中国地质大学学报, 2015, 40(4):601-603. http://d.old.wanfangdata.com.cn/Periodical/dqkx201504001
ZHAI Sikui, MI Lijun, et al. Minneral compositions and their environmental implications reef of Shidao Island, Xisha[J].Earth Science -Journal of China University of Geosciences, 2015, 40(4):601-603. http://d.old.wanfangdata.com.cn/Periodical/dqkx201504001
[14] 孙卫涛, 刘嘉玮, 巴晶, 等.孔隙介质弹性波频散一衰减理论模型[J].地球物理学进展, 2015, 30(2):590-595.
SUN Weitao, LIU Jiawei, BA Jing, et al.Theoretical models of elastic wave dispersion-attenuation in porous mediun.[J].Progree in Geophysics. 2015, 30(2):590-595.
[15] 赵克超, 陈文学, 陶果利.用Kuster-Toksöz方程简化孔隙纵横比谱及判断储层孔隙类型[J].西安石油大学学报:自然科学版, 2008, 24(1):37-38. http://www.wanfangdata.com.cn/details/detail.do?_type=conference&id=8093505
ZHAO Kechao, CHEN Wenxue, TAO Keli. Simplifying the aspect ratio distribution of reservoir pore and predicting the type of it by Kuster-Toksöz equation[J].Journal of Xi an Shiy ou University(Natural Science Edition), 2008, 24(1):37-38. http://www.wanfangdata.com.cn/details/detail.do?_type=conference&id=8093505
[16] Kuster G T, Toksöz M N. Velocity and attenuation of seismic waves in two phase media: Par t I: Theoretical fo rmulation[J]. Geophysics, 1974, 39: 587-606. doi: 10.1190/1.1440450
[17] Mavko G, Muker ji T, Dvo rkin J. Rock physics handboo k[M]. Standford Rock Physics Laboratory, 1996.
[18] Pickett G R. Acoust ic character log s and their applications in formatio nevaluation[J]. J Petrol Technol, 1963, 15: 650-667.
[19] Mitchmn R M, Vail Jn P R, Sangree J B. Seismic stratigraphy and global changes of sea level, Part 6:Stratigraphy interpretation of seismic reflection patterns in depositional sequences[M]// In: Payton C E, ed. Seismic Stratigraphy: AAPG Geologists Memoir, 1977, 26:117-134.
[20] 张艳芳.AVO叠前反演技术在生物礁储层油气检测中的应用[J].天然气工业, 2010, 30(12):34-36. http://d.old.wanfangdata.com.cn/Periodical/trqgy201012008
ZHANG Yanfang. Application of pre-stack AVO inversion to the hydrocarbon detection in biohermal reservoirs[J]. Natural Gas Industry, 2010, 30(12):34-36. http://d.old.wanfangdata.com.cn/Periodical/trqgy201012008
[21] 陈勇, 陈洪德, 关达, 等.地震技术在碳酸盐岩生物礁油气储层流体识别中的应用[J], 科学技术与工程, 2013, 7:6213. http://d.old.wanfangdata.com.cn/Periodical/kxjsygc201321029
CHEN Yong, CHEN Hongde, GUAN Da, et al. The Application of Seismic Technology in Fluid Discrimination of Carbonation Reef Oil and Gas Reservoir[J]. Science Technology and Engineering, 2013, 7:6213. http://d.old.wanfangdata.com.cn/Periodical/kxjsygc201321029
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