深水浊积砂岩油田含水变化规律精细预测方法
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摘要
受复杂储层特征影响,深水浊积砂岩油田单井动态规律预测难度大,实现单井含水变化规律的精细预测对目标油田而言具有重要意义。以西非尼日尔三角洲盆地Akpo油田为研究对象,根据该油田储层构型的研究成果,综合考虑沉积相、注采井间的砂体连通性及储层非均质性等影响因素,形成一套基于储层特征的生产井含水变化模式划分方法;并通过油藏工程与动态分析相结合的方法,建立一套基于储层特征的单井全周期含水变化规律预测方法;通过分析不同含水变化模式下生产井各阶段的主要矛盾,提出有针对性的优化调整策略;并进一步论证该方法在其他油田中的适用性。结果表明,(1)深水浊积砂岩油田储层构型复杂,储层特征是影响含水变化规律的关键因素;(2)深水浊积砂岩油田单井动态规律差异明显,生产决策必须有针对性;(3)所建立方法首次将深水浊积砂岩油田复杂的储层特征与多样化的单井生产动态规律结合起来,预测结果精度高;(4)研究思路与流程对深水浊积油田具有普遍的适用性。
Because of its complex reservoir characteristics, it is difficult to predict the single-well dynamic patterns of deep-water turbidite sandstone oilfields. Hence, realizing sophisticated prediction of single-well water-cut variation patterns is crucial.In this research, the Akpo Oilfield in the Niger Delta Basin of West Africa is studied. Its reservoir architecture and other influential factors such as sedimentary facies, sand body connectivity between injection wells, and reservoir heterogeneity are evaluated comprehensively to establish a method based on the reservoir characteristics for classifying the different modes of water-cut variation in production wells. By combining reservoir engineering and dynamic analysis, a prediction method for single-well full-cycle water-cut variation patterns based on reservoir characteristics is formulated. Through the analysis of the main contradictions at different stages of the production wells under various water-cut variation modes, targeted optimization and adjustment strategies are proposed. The applicability of the proposed method to other oilfields is also verified. The results show that:(1) the reservoir architecture of deep-water turbidite sandstone oilfields is complex and reservoir characteristics are the key factors affecting water-cut variations.(2) There are significant differences in the single-well dynamic patterns of deep-water turbidite sandstone oilfields. Thus, production decisions should be tailored to the specific field.(3) The proposed method is the first to integrate complex reservoir characteristics and diverse single-well dynamic patterns of deep-water turbidite sandstone oilfields, and it provides highly accurate predictions.(4) The research idea and flow are generally applicable to other deep-water turbidite oilfields.
Because of its complex reservoir characteristics, it is difficult to predict the single-well dynamic patterns of deep-water turbidite sandstone oilfields. Hence, realizing sophisticated prediction of single-well water-cut variation patterns is crucial.In this research, the Akpo Oilfield in the Niger Delta Basin of West Africa is studied. Its reservoir architecture and other influential factors such as sedimentary facies, sand body connectivity between injection wells, and reservoir heterogeneity are evaluated comprehensively to establish a method based on the reservoir characteristics for classifying the different modes of water-cut variation in production wells. By combining reservoir engineering and dynamic analysis, a prediction method for single-well full-cycle water-cut variation patterns based on reservoir characteristics is formulated. Through the analysis of the main contradictions at different stages of the production wells under various water-cut variation modes, targeted optimization and adjustment strategies are proposed. The applicability of the proposed method to other oilfields is also verified. The results show that:(1) the reservoir architecture of deep-water turbidite sandstone oilfields is complex and reservoir characteristics are the key factors affecting water-cut variations.(2) There are significant differences in the single-well dynamic patterns of deep-water turbidite sandstone oilfields. Thus, production decisions should be tailored to the specific field.(3) The proposed method is the first to integrate complex reservoir characteristics and diverse single-well dynamic patterns of deep-water turbidite sandstone oilfields, and it provides highly accurate predictions.(4) The research idea and flow are generally applicable to other deep-water turbidite oilfields.
引文
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[2]林煜,吴胜和,王星,等.深水浊积水道体系构型模式研究——以西非尼日尔三角洲盆地某深水研究区为例[J].地质论评,2013, 59(3):510-520. doi:10.3969/-j.issn.0371-5736.2013.03.011LIN Yu, WU Shenghe, WANG Xing, et al. Research on architecture model of deepwater turbidity channel system:a case study of a deepwater research area in niger delta basin,West Africa[J]. Geological Review, 2013, 59(3):510-520.doi:10.3969/j.issn.0371-5736.2013.03.011
[3]刘剑平,潘校华,马君,等.西部非洲地区油气地质特征及资源概述[J].石油勘探与开发,2008(3):378-384.doi:10.3321/j.issn:1000-0747.2008.03.019LIU Jianping,PAN Xiaohua,MA Jun,et al. Petroleum geology and resources in West Africa:An overview[J]. Petroleum Exploration and Development, 2008(3):378-384.doi:10.3321/j.issn:1000-0747.2008.03.019
[4]王颖,吕明.深水沉积储层特征——以尼日利亚OML130区块为例[J].天然气地球科学,2009(2):228-236.WANG Ying, LU Ming. Reservoir characteristics of deepwater turbidite:A case study of OML130 in Niger[J]. Natural Gas Geoscience, 2009(2):228-236.
[5]赵晓明,吴胜和,刘丽.尼日尔三角洲盆地Akpo油田新近系深水浊积水道储层构型表征[J].石油学报,2012,33(6):1049-1058. doi:10.7623/syxb201206018ZHAO Xiaoming, WU Shenghe, LIU Li. Characterization of reservoir architectures for Neogene deepwater turbidity channels of Akpo Oilfield, Niger Delta Basin[J]. Acta Petrolei Sinica, 2012, 33(6):1049-1058. doi:10.7623/-syxb201206018
[6] SALLER A H,NOAH J T,RUZUAR A P,ETAL. Linked lowstand delta to basin-floor deposition, offshore Indonesia:An analog for deepwater reservoir systems[J]. AAPG Bullet in, 2004, 88(1):21-46. doi:10.1306/09030303003
[7] WYNN R B, CRONIN B T, PEAKALL J. Sinuous deepwater channels:Genesis, geometry and architecture[J].Marine and Petroleum Geology, 2007, 24(6-9):341-387.doi:10.1016/j.marpetgeo.2007.06.001
[8]解吉高,刘春成,刘志斌,等.下刚果盆地北部中新统深水浊积岩储层及含油性地震预测[J].石油学报,2015,36(1):33-40. doi:10.7623/syxb201501004XIE Jigao,LIU Chuncheng,LIU Zhibin,et al. Seismic prediction of the reservoir and oil-bearing property of Miocene deep-water turbidite in northern Lower Congo Basin[J]. Acta Petrolei Sinica, 2015, 36(1):33-40. doi:10.7623/syxb201501004
[9]丁帅伟,姜汉桥,陈民锋,等.国外深水油田开发模式[J].大庆石油地质与开发,2013,32(5):41-47. doi:10.3969/J.ISSN.1000-3754.2013.05.009DING Shuaiwei, JIANG Hanqiao, CHEN Minfeng, et al.Development models of overseas deepwater oilfields[J].Petroleum Geology&Oilfield Development in Daqing,2013, 32(5):41-47. doi:10.3969/J.ISSN. 1000-3754.-2013.05.009
[10] CRAIG F F JR. The reservoir engineering aspects of waterflooding[M]. New York:Society of Petroleum Engineers of AIME, 1971:112-114.
[11]方凌云.砂岩油藏注水开发动态分析[M].北京:石油工业出版社,1997.FANG Lingyun. Dynamic analysis of waterflood in sand-stone reservoirs[M]. Beijing:Petroleum industry press,1997.
[12]张继风,田晓东,郭玮琪,等.水驱油田含水上升规律探讨及其应用[J].钻采工艺,2011,34(3):49-51. doi:10.3969/J.ISSN. 1006-768X.2011.03.14ZHANG Jifeng, TIAN Xiaodong, GUO Weiqi, et al. Discussion and application of the water cut increasing law of in water-flooding oilfield[J]. Drilling&Production Technology, 2011, 34(3):49-51. doi:10.3969/J.ISSN. 1006-768X.2011.03.14
[13] COHEN H A, MCCLAY K. Sedimentation and shale tectonics of the northwestern Niger Delta front[J]. Marine&Petroleum Geology, 1996, 13(3):313-328. doi:10.1016/-0264-8172(95)00067-4
[14] CORREDOR F, SHAW J H, BILOTTI F. Structural styles in the deepwater fold and thrust belts of the Niger Delta[J].AAPG Bulletin, 2005,89(6):753-780. doi:10.1306/0217-0504074
[15]苑志旺,杨宝泉,杨莉,等.深水浊积砂岩油田含水上升机理及优化注水技术:以西非尼日尔三角洲盆地AKPO油田为例[J].石油勘探与开发,2018, 45(2):287-296. doi:10.11698/PED.2018.02.11YUAN Zhiwang, YANG Baoquan, YANG Li, et al. Watercut rising mechanism and optimized water injection technology for deepwater turbidite sandstone oilfield:A case study of AKPO Oilfield in Niger Delta Basin, West Africa[J]. Petroleum Exploration and Development, 2018,45(2):287-296. doi:10.11698/PED.2018.02.11
[16] PRANTER M J, SOMMER N K. Static connectivity of fluvial sandstones in a lower coastal-plain setting:An example from the upper cretaceous lower Williams Fork Formation, Piceance Basin, Colorado[J]. AAPG Bulletin,2011, 95(6):899-923. doi:10.1306/12091010008
[17]张磊夫,王红亮,李英烈,等.砂体融合的定量表征及其对储集层连通性的控制[J].石油勘探与开发,2017,44(2):205-212. doi:10.11698/PED.2017.02.04ZHANG Leifu, WANG Hongliang, LI Yinglie, et al. Quantitative characterization of sandstone amalgamation and its impact on reservoir connectivity[J]. Petroleum Exploration and Development, 2017, 44(2):205-212. doi:10.-11698/PED.2017.02.04
[18]闫长辉,周文,王继成.利用塔河油田奥陶系油藏生产动态资料研究井间连通性[J].石油地质与工程,2008,22(4):70-72. doi:10.3969/j.issn.1673-8217.-2008.04.023YAN Changhui, ZHOU Wen, WANG Jicheng. Study on production performance-based interwell connectivity of Ordovician pool in Tahe Oilfield[J]. Petroleum Geology and Engineering, 2008, 22(4):70-72. doi:10.3969/j.issn.-1673-8217.2008.04.023
[19]刘斌.Logistic旋回预测含水上升率[J].石油勘探与开发,1992, 19(2):68-70.LIU Bin. Prediction of rate of water cut increase by logis-tic cycle method[J], Petroleum Exploration and Development, 1992, 19(2):68-70.
[20]潘有军,徐赢,吴美娥,等.牛圈湖区块西山窑组油藏含水上升规律及控水对策研究[J].岩性油气藏,2014, 26(5):113-118. doi:10.3969/j.issn.1673-8926.-2014.05.021PAN Youjun, WU Ying, WU Meie, et al. Water cut rising rules and water control countermeasures of reservoir of Xishanyao formation in Niuquanhu Block[J]. Lithologic Reservoirs, 2014, 26(5):113-118. doi:10.3969/j.-issn.1673-8926.2014.05.021
[21]王炜,刘鹏程.预测水驱油田含水率的Gompertz模型[J].新疆石油学院学报,2001,13(4):30-32. doi:10.3969/j.issn.1673-2677.2001.04.008WANG Wei, LIU Pengcheng. The predicting model Gompertz of watercut rate in water-flood oilfield[J]. Journal of Xinjiang Petroleum Institute, 2001,13(4):30-32. doi:10.-3969/j.issn. 1673-2677.2001.04.008
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