Lithologic Reservoirs ›› 2018, Vol. 30 ›› Issue (4): 120-126.doi: 10.12108/yxyqc.20180414

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Development models for offshore heavy oil field in high water cut stage

ZHANG Yunlai, LIAO Xinwu, HU Yong, LI Tingli, SU Jinchang   

  1. Tianjin Branch of CNOOC Ltd., Tianjin 300459, China
  • Received:2017-12-03 Revised:2018-02-27 Online:2018-07-21 Published:2018-07-21

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Abstract: After entering high water cut development stage,the offshore heavy oil field is faced with the problems of low oil recovery speed,rapid water channeling,rapid production decline and low recovery ratio,and lack of experience in stratified development and adjustment,which restricts the stable production and efficient development of the oil field. Taking Qinhuangdao 32-6 oilfield as an example,the development model in high water cut stage was studied by using laboratory physical experiments and reservoir numerical simulation,and the technical limits of stratified development of offshore heterogeneous heavy oil reservoirs,injection-production infill model and downhole limit of horizontal well layout in bottom water reservoir were defined. The results show that when the reservoir viscosity level difference is less than 3 or the permeability difference is greater than 3,the interlayer interference coefficient increases,the stratified development should be carried out,and the thickness of each development layer is 4-8 m. For strong heterogeneous reservoirs,the volumetric sweep efficiency varies greatly under different well types and pattern infill models. By adjusting the well spacing to 220 m,the volumetric sweep efficiency is improved significantly. The permeability,distribution area and distribution position of reservoir interlayer have great influence on the productivity of horizontal well. After the interlayer optimization,the accumulative oil production of the horizontal well in the heavy oil bottom water reservoir with the viscosity of 260 mPa·s is 50 000 m3, and the height of the oil column can be pushed from 12 m to 7 m. Based on the above research results, a new high efficiency development model of"vertical layering system", "plane change well pattern"and"horizontal well tapping potential" in offshore fluvial facies oil fields was formed. It was applied to Qinhuangdao 32-6 oilfield, and good results have been achieved, which can provide reference for the development of similar oilfields.

Key words: reservoir numerical simulation, initialization, capillary pressure, J function

CLC Number: 

  • TE345
[1] 俞启泰, 李文兴, 刘渭, 等.论注水砂岩油田高含水期的调整原则.石油学报, 1991, 12(3):58-68. YU Q T, LI W X, LIU W, et al. A discussion on the principle of development adjustment in a water-flooding sandstone reservoir during its high water-cut stage. Acta Petrolei Sinica, 1991, 12(3):58-68.
[2] 王秋语.国外高含水砂岩油田提高水驱采收率技术进展.岩性油气藏, 2012, 24(3):123-128. WANG Q Y. Technical progress for improving waterflood recovery efficiency of foreign high water cut sandstone oilfield. Lithologic Reservoirs, 2012, 24(3):123-128.
[3] 王家宏. 多油层油藏分层注水稳产条件与井网加密调整.石油学报, 2009, 30(1):80-83. WANG J H. Stable production conditions and well pattern infilling for development of multilayered reservoir with separate zone water injection. Acta Petrolei Sinica, 2009, 30(1):80-83.
[4] 徐赢, 潘有军, 周荣萍, 等.油田注水开发期含水率随时间变化规律研究.岩性油气藏, 2016, 28(4):127-132. XU Y, PAN Y J, ZHOU R P, et al. Water cut change law with time in waterflooding oilfield. Lithologic Reservoirs, 2016, 28(4):127-132.
[5] 周守为.海上稠油高效开发新模式研究及应用.西南石油大学学报(自然科学版), 2007, 29(5):1-4. ZHOU S W. The research and application of new models efficient development of offshore heavy oilfield. Journal of Southwest Petroleum University(Science & Technology Edition), 2007, 29(5):1-4.
[6] 周守为, 张凤久, 孙福街, 等.中国近海典型油田开发实践.北京:石油工业出版社, 2009:28-29. ZHOU S W, ZHANG F J, SUN F J, et al. The typical development practice of Chinese offshore oilfield. Beijing:Petroleum Industry Press, 2009:28-29.
[7] 郭太现, 杨庆红, 黄凯, 等.海上河流相油田高效开发技术.石油勘探与开发, 2013, 40(6):708-714. GUO T X, YANG Q H, HUANG K, et al. Techniques for highefficient development of offshore fluvial oilfields. Petroleum Exploration and Development, 2013, 40(6):708-714.
[8] 张凤久, 罗宪波, 刘英宪, 等.海上油田丛式井网整体加密调整技术研究.中国工程科学, 2011, 13(5):34-40. ZHANG F J, LUO X B, LIU Y X, et al. Research on overall encryption adjustment technology of offshore oil field. Engineering Sciences, 2011, 13(5):34-40.
[9] 鲜波, 熊钰, 石国新, 等.薄层油藏合采层间干扰分析及技术对策研究.特种油气藏, 2007, 14(3):51-54. XIAN B, XIONG Y, SHI G X, et al. Interlayer interfer-ence analysis of commingled production in thin reservoirsand its technical countermeasures. Special Oil and Gas Reservoir, 2007, 14(3):51-54.
[10] 于春生, 李闽, 乔国安, 等.纵向非均质油藏水驱油实验研究. 西南石油大学学报(自然科学版), 2009, 31(1):84-86. YU C S, LI M, QIAO G A, et al. Vertically he-terogeneous reservoir water flooding oil test. Journal of Southwest Petroleum University(Science & Technology Edition), 2009, 31(1):84-86.
[11] 于会利, 汪卫国, 荣娜, 等.胜坨油田不同含水期层间干扰规律.油气地质与采收率, 2006, 13(4):71-73. YU H L, WANG W G, RONG N, et al. Rule of interlayer interference in various water cut periods of Shengtuo oil-field. Petroleum Geology and Recovery Efficiency, 2006, 13(4):71-73.
[12] 熊钰, 卢智慧, 李玉林, 等.高含水期油田油井合采技术界限研究.特种油气藏, 2010, 17(1):61-63. XIONG Y, LU Z H, LI Y L, et al. Research on technical limits of multilayer producer for oilfield in high water cut stage. Special Oil and Gas Reservoir, 2010, 17(1):61-63.
[13] 闫正和, 郭康良, 李彦平, 等.海上干扰试井数值模拟设计及方案优化.岩性油气藏, 2015, 27(2):98-102. YAN Z H, GUO K L, LI Y P, et al. Interference well test with numerical simulation design and program optimization at sea. Lithologic Reservoirs, 2015, 27(2):98-102.
[14] 冯敏, 吴向红, 李捷, 等.苏丹大型复杂砂岩油田水平井技术研究与应用.特种油气藏, 2012, 19(2):97-100. FENG M, WU X H, LI J, et al. Research and application of horizontal well technology for large complex sandstone oilfields in Sudan. Special Oil & Gas Reservoirs, 2012, 19(2):97-100.
[15] 欧阳雨薇, 胡勇, 张运来, 等. 低幅底水稠油油藏水平井含水率上升规律.新疆石油地质, 2017, 38(5):607-610. OUYANG Y W, HU Y, ZHANG Y L, et al. Water cut rising law of low-amplitude heavy oil reservoirs with bottom water in horizontal wells. Xinjiang Petroleum Geology, 2017, 38(5):607-610.
[16] 李廷礼, 廖新武, 徐玉霞, 等.海上低幅底水稠油油藏特征及水平井开发初探.特种油气藏, 2012, 19(6):95-97. LI T L, LIAO X W, XU Y X, et al. Initial study on characteristics and development with horizontal wells of heavy oil reservoirs with small bottom water in offshore. Special Oil & Gas Reservoirs, 2012, 19(6):95-97.
[17] 甘立琴, 苏进昌, 谢岳, 等.曲流河储层隔夹层研究——以秦皇岛32-6油田为例.岩性油气藏, 2017, 29(6):128-134. GAN L Q, SU J C, XIE Y, et al. Interlayers of meandering river reservoir:a case from Qinhuangdao 32-6 oilfield. Lithologic Reservoirs, 2017, 29(6):128-134.
[18] 胡浩. 基于砂体结构的剩余油挖潜调整措施研究.岩性油气藏, 2016, 28(5):111-120. HU H. Adjustment measures of remaining oil tapping based on sand body structure. Lithologic Reservoirs, 2016, 28(5):111-120.
[19] 高淑梅, 范绍雷, 梅启亮, 等.水平井开发技术在底水油藏挖潜中的应用.大庆石油地质与开发, 2009, 28(4):56-59. GAO S M, FAN S L, MEI Q L, et al. Application of horizontal well development technology in tapping potential of bottomwater reservoirs. Petroleum Geology and oilfield Development in Daqing, 2009, 28(4):56-59.
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