Reservoir evaluation and its application and effect in engineering implementation

doi:10.3969/j.issn.1672-7703.2018.02.011

Abstract

Abstract: The exploration and development of deepwater oilfield faces challenges such as insufficient experience, complex deep-water environment and underground factor, higher single-well investment cost, and difficult cost recovery, so that simply using the exploration-development integration mode for onshore and shallow water fields is difficult to meet the requirement of deep-water oilfield. The concept of geology-engineering integration is proposed, incorporating subsurface uncertainties, time and cost elements, which forms a reservoir evaluation and decision-making system, and based on which the evaluation mode, decision-making method and supporting drilling and completion technology have been researched and developed for deepwater oilfields. Evaluation practice in the deepwater pre-salt reservoirs in Brazil shows that the divisional evaluation mode called "one body and two axes" and information-value-oriented decision-making method would be favorable to promote the process of integrated exploration and development, shorten the evaluation period, maximize the evaluation benefit and make scientific decisions for deepwater oilfield. The application of pre-salt drilling and completion technology has greatly improved the drilling efficiency and reduced the drilling cost while accumulating experience for development wells. The successful application of the geology-engineering integration has proved it effective in deepwater oilfield and reservoir evaluation.

Key words: deepwater oilfield, reservoir evaluation, geology-engineering integration, value of information, exploration-development integration

CLC Number:

Jiang Bin, Shang Fanjie, Wang Yaqing, Yang Li, Wu Jing. Reservoir evaluation and its application and effect in engineering implementation[J]. China Petroleum Exploration, 2018, 23(2): 83-89.

References

[1] 张功成,屈红军,赵冲,张凤廉,赵钊.全球深水油田勘探40年大发现及未来勘探前景[J].天然气地球科学,2017,28(10):1447-1476. Zhang Gongcheng, Qu Hongjun, Zhao Chong, Zhang Fenglian, Zhao Zhao. Giant discoveries of oil and gas exploration in global deepwaters in 40 years and the prospect of exploration[J].Natural Gas Geoscience, 2017,28(10):1447-1476.
[2] 张异彪,黄涛,李斌,李玉剑,杨文达.深水钻井环境因素调查评价方法和流程研究[J]. 中国海洋大学学报,2017,47(10):154-161. Zhang Yibiao, Huang Tao, Li Bin, Li Yujian, Yang Wenda. Procedure and Methods of Deep Water Drilling Site Envionmental Hazards Surveying and Evaluation[J]. Periodical of Ocean University of China, 2017,47(10):154-161.
[3] 杨海长,陈莹,纪沫,韩银学,王龙颖,黄萱.珠江口盆地深水区构造演化差异性与油气勘探意义[J].中国石油勘探,2017,22(6):59-68. Yang Haizhang, Chen Ying, Ji Mo, Han Yinxue, Wang Longying, Huang Xuan. Structural evolution difference and the significance for oil and gas exploration in the deep water area of the Pearl River Mouth Basin[J]. China Petroleum Exploration, 2017,22(6):59-68.
[4] 邢作昌,林畅松,张忠涛,秦成岗,王思琦.白云深水区珠海组陆架边缘三角洲沉积演化[J]. 特种油气藏,2017,24(5):15-20. Xing Zuochang, Lin Changsong, Zhang Zhongtao, Qin Chenggang, Wang Siqi.Deposit evolution of continental margin delta in the Zhuhai Formation in deep water area of Baiyun sag[J]. Special Oil & Gas Reservoirs, 2017,24(5):15-20.
[5] 蔡露露,王雅宁,王颖,董朔朋,朱石磊,廖计华,等.西非深水沉积类型特征及油气勘探意义[J].石油学报,2016,37(增刊1):131-142. Cai Lulu, Wang Yaning, Wang Ying, Dong Shuopeng, Zhu Shilei, Liao Jihua, et al. Type features and hydrocarbon exploration significance of deepwater sedimentary in West Africa[J]. Acta Petrolei Sinica, 2016,37(Supp.1):131-142.
[6] 赵红岩,于水,黄兴文,郝立业,孙鹏超.加蓬盆地盐下油气勘探潜力评价[J].中国石油勘探,2017,22(5):96-101. Zhao Hongyan, Yu Shui, Huang Xingwen, Hao Liye, Sun Pengchao. Evaluation on petroleum exploration potential in sub-salt layers in Gabon Basin[J]. China Petroleum Exploration, 2017,22(5):96-101.
[7] 兰蕾,孙玉梅,王柯.南加蓬次盆深水区天然气成因类型及气源探讨[J].中国石油勘探,2017,22(2):67-73. Lan Lei, Sun Yumei, Wang Ke. Genetic types and sources of natural gas in deep water areas in South Gabon Sub-basin[J]. China Petroleum Exploration, 2017,22(2):67-73.
[8] 汪新伟,邬长武,郭永强,孟庆强,张云霞,陶冶.巴西桑托斯盆地卢拉油田成藏特征及对盐下勘探的启迪[J].中国石油勘探,2013, 18(3):61-69. Wang Xinwei, Wu Changwu, Guo Yongqian, Meng Qingqiang, Zhang Yunxia, Tao Ye. Accumulation feature of Lula oilfield and its exploratory implication for pre-salt reservoirs in Santos Basin, Brazil[J]. China Petroleum Exploration, 2013,18(3):61-69.
[9] 胡光义,孙福街,范廷恩,宋来明,王晖,李敬功,等.海上油气田勘探开发一体化理念、基本思路和对策[J].中国海上油气,2013,25(6):61-64. Hu Guangyi, Sun Fujie, Fan Tingen, Song Laiming,Wang Hui, Li Jinggong, et al. A conception of exploration-development integration and the relative working principles and procedure in offshore oil and gas fields[J]. China Offshore Oiland Gas, 2013,25(6):61-64.
[10] 李庆,姜在兴,由雪莲.惠民凹陷商847块湖相深水浊积岩储层非均质性特征及主控因素[J].油气地质与采收率,2016,23(5):44-49. Li Qing,Jiang Zaixing,You Xuelian.Characteristics and main controlling factors of reservoir heterogeneity of lacustrine deep-water turbidites in Shang847 block,Huimin sag[J]. Petroleum Geology and Recovery Efficiency,2016,23(5):44-49.
[11] 尚凡杰,姜彬,杨宝泉,苑志旺,顾文欢,张昕.深水油田开发风险及应对策略[J].石油科技论坛,2017,36(6):25-31. Shang Fanjie, Jiang Bin, Yang Baoquan, Gu Wenhuan, Yuan Zhiwang, Zhang Xin. Risks for deepwater oilfield development and preventive measures[J]. Oil Forum, 2017,36(6):25-31.
[12] 吴奇,梁兴,鲜成钢,李峋.地质-工程一体化高效开发中国南方海相页岩气[J].中国石油勘探,2015,20(4):1-23. Wu Qi, Liang Xing, Xian Chenggang, Li Xun. Geoscience-toproduction integration ensures effictive and efficient South China marine shale gas development[J]. China Petroleum Exploration, 2014,19(6):14-23.
[13] 胡文瑞.地质工程一体化是实现复杂油气藏效益勘探开发的必由之路[J].中国石油勘探,2017,22(1):1-5. Hu Wenrui. Geology-engineering integration-a necessary way to realize profitable exploration and development of complex reservoirs[J]. China Petroleum Exploration,2017,22(1):1-5.
[14] David Reid, Thomas Wilson, Martijn Dekker. Key aspects of deepwater appraisal[R]. OTC-25094-MS, 2014.
[15] Beltrao R L C, Sombra C L, Lage A C V M, Netto J R F, Henriques C C D. Pre-salt Santos Basin-challenges and new technologies for the development of the pre-salt cluster, Santos Basin, Brazil[R]. OTC-19880-MS,2009.
[16] Filho F G R V, Naveiro J T, de Oliveira A P. Developing mega projects simultaneously:the Brazilian pre-salt case[R].OTC-25896-MS,2015.
[17] Salomão M C, Marçon D R, Rosa M B, de Salles Pessoa T C, Capeleiro Pinto A C. Broad strategy to face with complex reservoirs:expressive results of production in pre-salt area, offshore Brazil[R]. OTC-25712-MS, 2015.
[18] Dekker M, Reid D. Deepwater development strategy[R].OTC-25135-MS, 2014.
[19] Coopersmith E M, Cunningham P C. A practical approach to evaluating the value of information and real option decisions in the upstream petroleum industry[R]. SPE 77582, 2002.
[20] Steve Begg and Reidar Bratvold, John Campbell. The value of flexibility in managing uncertainty in oil and gas Investments[R]. SPE 77586, 2002.
[21] Portella R C M, Salomao M C, Blauth M, Duarte R L B. Uncertainty quantification to evaluate the value of information in a deepwater reservoir[R]. SPE 79707, 2003.
[22] Hector A, Wills, Ramona M Graves. Information is costly, but how valuable is it[R]. SPE 90710, 2004.
[23] Hector A Wills, Ramona M Graves, Jennifer Miskimins. Don't be fooled by bayes[R]. SPE 90717, 2004
[24] Coopersmith E M, Burkholder M K, Schulze J H. Improving exploration, appraisal & pilot planing through better forecasing of uncertainty reduction via reliability of information interviewing and confidence plots[R]. SPE 159587, 2012
[25] Akers T J. Salinity-based pump & dump strategy for drilling salt with supersaturated fluids[R]. SPE 128405, 2010.
[26] Matt Weem, Dennis Moore, Colin Leach. Managed pressure drilling as well control in deepwater GOM:challenges to current modes of thinking[R]. SPE 179179-MS, 2016.