缝洞型油藏储量评价方法及开发对策

doi:10.3969/j.issn.1006-6535.2021.06.017

摘要/Abstract

摘要： 塔河缝洞型油藏储层非均质性强,开发中后期油水关系复杂且储量动用不均,导致剩余油挖潜难度大。针对现有储量分类方法无法有效指导主体区精细开发的问题,运用体积雕刻法进行储量复算,通过属性优选提高缝洞刻画精度,利用参数分区差异化赋值提高储量计算精度,根据缝洞连通特征与储量动用状况,细化储量分类标准,将已井控区储量划分为未连通储量、连通未动用储量、连通在动用储量3类。针对不同类型储量制订相应开发调整对策,未连通储量、连通未动用储量以部署新井、完善井网为主,连通在动用储量以井间注采调整为主。利用储量评价技术指导新井部署与注采调整,塔河4区投产新井31口,实施油水井措施25井次,日产油由270 t/d升至700 t/d,综合治理效果显著。研究成果对缝洞型油藏开发中后期高效调整具有借鉴意义。

关键词: 缝洞型油藏, 连通性, 储量评价, 开发对策, 碳酸盐岩, 塔河油田

Abstract: The fracture-vuggy reservoir in Tahe Oilfield is highly inhomogeneous, and the complex oil-water relationship and uneven reserve production in the middle and late development stages will lead to great difficulty in exploring remaining oil. In response to the problem that the existing reserve classification method is not applicable to effective guidance in the fine development of the main area, volume carving method was adopted for reserve recalculation, the accuracy of fracture-cavern carving was improved through attribute optimization, the accuracy of reserve calculation was enhanced by differential assignment of parameter partitioning, the reserve classification criteria were refined according to the fracture-cavern connectivity characteristics and reserve utilization, and the reserves were classified into three categories: unconnected reserve, connected nonproducing reserve and connected producing reserve. Development adjustment measures were taken for different types of reserves, for example, new well deployment and well pattern improvement were mainly adopted for unconnected reserve and connected nonproducing reserve, and injection-production adjustment between wells for connected and producing reserve. Reserve evaluation technology was employed to guide new well deployment and injection-production adjustments. Since 2018, 31 new wells have been put into production in Tahe Block 4, and oil-water well adjustment measures were implemented in 25 wells, and the daily oil production was increased from 270 t/d to 700 t/d, showing remarkable comprehensive improvement effect. The research results have implications for efficient adjustment in the intermediate and late stages of fracture-vuggy reservoir development.

Key words: fracture-vuggy reservoir, connectivity, reserve evaluation, development countermeasures, carbonate rock, Tahe Oilfield

中图分类号:

TE344

耿甜, 吕艳萍, 巫波, 张晓, 文欢. 缝洞型油藏储量评价方法及开发对策[J]. 特种油气藏, 2021, 28(6): 129-136.

Geng Tian, Lyu Yanping, Wu Bo, Zhang Xiao, Wen Huan. Reservoir Evaluation Method and Development Countermeasures for Fracture-Vuggy Reservoir[J]. Special Oil & Gas Reservoirs, 2021, 28(6): 129-136.

参考文献

[1] 丁勇,彭守涛,李会军.塔河油田及塔北碳酸盐岩油藏特征与成藏主控因素[J].石油实验地质,2011,33(5):487-494.
DING Yong,PENG Shoutao,LI Huijun.Features and main controlling factors of carbonate reservoirs in Tahe Oilfield and northern Tarim Basin[J].Petroleum Geology & Experiment,2011,33(5):487-494.
[2] 高利君,李宗杰,李海英,等.塔里木盆地深层岩溶缝洞型储层三维雕刻“五步法”定量描述技术研究与应用 [J].物探与化探,2020,44(3):691-697.
GAO Lijun,LI Zongjie,LI Haiying,et al.The deep Karst fissure and cavern reservoir in Tarim Basin carved in three dimensions:research and application of"five-step method"quantitative description technology[J].Geophysical and Geochemical Exploration,2020,44(3):691-697.
[3] 杨敏,靳佩.塔河油田奥陶系缝洞型油藏储量分类评价技术[J].石油与天然气地质,2011,32(4):625-630.
YANG Min,JIN Pei.Reserve classification and evaluation of the Ordovician fractured-vuggy reservoirs in Tahe Oilfield[J].Oil & Gas Geology,2011,32(4):625-630.
[4] 刘遥,荣元帅,杨敏.碳酸盐岩缝洞型油藏缝洞单元储量精细分类评价[J].石油实验地质,2018,40(3):431-438.
LIU Yao,RONG Yuanshuai,YANG Min.Detailed classification and evaluation of reserves in fracture-cavity units for carbonate fracture-cavity reservoirs[J].Petroleum Geology & Experiment,2018,40(3):431-438.
[5] 杨子川.塔河油田碳酸盐岩储层预测技术与应用[J].勘探地球物理进展,2004,27(6):432-439.
YANG Zichuan.Carbonate reservoir prediction technology and its application in Tahe Oilfield[J].Progress in Geophysics,2004,27(6):432-439.
[6] 刘群,王世星,顾汉明,等.碳酸盐岩缝洞体体积定量计算及其影响因素分析探索——以塔河油田主体区为例[J].石油物探,2013,52(2):217-222.
LIU Qun,WANG Shixing,GU Hanming,et al.Carbonate fracture-cave volume quantitative calculation and its influencing factors analysis:a case study of the main area in Tahe Oilfield[J].Geophysical Prospecting for Petroleum,2013,52(2):217-222.
[7] 韩长城,林承焰,鲁新便,等.塔河油田奥陶系岩溶地貌对储集层的控制作用[J].新疆石油地质,2016,37(4):417-422.
HAN Changcheng,LIN Chengyan,LU Xinbian,et al.Controlling effects of Ordovician Karst paleogeomorphology on reservoirs in Tahe Oilfield,Tarim Basin[J].Xinjiang Petroleum Geology,2016,37(4):417-422.
[8] 荣元帅,胡文革,蒲万芬,等.塔河油田碳酸盐岩油藏缝洞分隔性研究[J].石油实验地质,2015,37(5):599-605.
RONG Yuanshuai, HU Wenge,PU Wanfen,et al.Separation of fractures and cavities in carbonate reservoirs in Tahe Oilfield[J].Petroleum Geology & Experiment,2015,37(5):599-605.
[9] 易斌,崔文彬,鲁新便,等.塔河油田碳酸盐岩缝洞型储集体动态连通性分析[J].新疆石油地质,2011,32(5):469-472.
YI Bin,CUI Wenbin,LU Xinbian,et al.Analysis of dynamic connectivity on carbonate reservoir with fracture and cave in Tahe Oilfield,Tarim Basin[J].Xinjiang Petroleum Geology,2011,32(5):469-472.
[10] 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.
YAN Changhui,ZHOU Wen,WANG Jicheng.Study on production performance-based interwell connectivity of Ordovician pool in Tahe Oilfield[J].Petroleum Geology & Engineering,2008,22(4):70-72.
[11] 荣元帅,李新华,刘学利,等.塔河油田碳酸盐岩缝洞型油藏多井缝洞单元注水开发模式[J].油气地质与采收率,2013,20(2):58-61.
RONG Yuanshuai,LI Xinhua,LIU Xueli,et al.Discussion about pattern of water flooding, development in multi-well fracture-cavity units of carbonate fracture-cavity reservoir in Tahe Oilfield[J].Petroleum Geology and Recovery Efficiency,2013,20(2):58-61.
[12] 向立宏.成熟探区主力含油层系储量空白区勘探目标优选方法——以渤南洼陷南斜坡沙三段为例[J].油气地质与采收率,2020,27(2):53-61.
XIANG Lihong.Method for exploration target optimization in blank region of main oil-bearing beds in mature exploration area:a case study of Es₃ Member in south slope,Bonan Subsag[J].Petroleum Geology and Recovery Efficiency,2020,27(2):53-61.
[13] 刘昌鸣.剩余经济可采储量及储量价值影响因素敏感程度分析[J].油气地质与采收率,2017,24(2):90-94.
LIU Changming.Study on sensitivity of influencing factors of the remaining economic recoverable reserves and reserve value[J].Petroleum Geology and Recovery Efficiency,2017,24(2):90-94.
[14] 胡文革.塔河碳酸盐岩缝洞型油藏开发技术及攻关方向[J].油气藏评价与开发, 2020, 10(2): 1-10.
HU Wenge.Development technology and research direction of fractured-vuggy carbonate reservoirs in Tahe Oilfield[J].Reservoir Evaluation and Development, 2020, 10(2): 1-10.
[15] 薛辉,韩春元,肖博雅,等.饶阳凹陷中深层碳酸盐胶结物特征及其对储层孔隙特征的影响[J].大庆石油地质与开发,2020,39(1):10-17.
XUE Hui, HAN Chunyuan, XIAO Boya,et al.Characteristics of the carbonate cements and their influences on the reservoir pore properties in the middle and deep layers of Raoyang Sag[J].Petroleum Geology & Oilfield Development in Daqing,2020,39(1):10-17.
[16] 杜春晖,仇鹤,陈小凡,等.基于数值模拟的流势分析技术在缝洞型油藏开发中的应用[J].油气藏评价与开发, 2020, 10(2): 83-89.
DU Chunhui,QIU He,CHEN Xiaofan, et al.Application of flow potential analysis technique based on numerical simulation in the development of fractured-vuggy reservoir[J].Reservoir Evaluation and Development, 2020, 10(2): 83-89.
[17] 李小波,刘学利,杨敏,等.缝洞型油藏不同岩溶背景注采关系优化研究[J].油气藏评价与开发, 2020, 10(2): 37-42.
LI Xiaobo,LIU Xueli,YANG Min,et al.Study on relationship optimization of injection and production in fractured-vuggy reservoirs with different karst background[J].Reservoir Evaluation and Development, 2020, 10(2): 37-42.
[18] 赵凤兰,屈鸣,吴颉衡,等.缝洞型碳酸盐岩油藏氮气驱效果影响因素[J].油气地质与采收率,2017,24(1):69-74.
ZHAO Fenglan,QU Ming,WU Jieheng,et al.Influencing factors of the effect of nitrogen gas drive in fractured-vuggy carbonate reservoir[J].Petroleum Geology and Recovery Efficiency,2017,24(1):69-74.
[19] 杨敏,李小波,谭涛,等.古暗河油藏剩余油分布规律及挖潜对策研究——以塔河油田TK440井区为例[J].油气藏评价与开发, 2020, 10(2): 43-48.
YANG Min,LI Xiaobo,TAN Tao,et al.Remaining oil distribution and potential tapping measures for palaeo-subterranean river reservoirs: a case study of TK440 well area in Tahe Oilfield[J].Reservoir Evaluation and Development, 2020, 10(2): 43-48.
[20] 方芹.微断层发育特征及封闭性评价:以塔河Ⅸ区下油组油藏为例[J].大庆石油地质与开发,2020,39(5):40-50.
FANG Qin.Development characteristics and its sealing evaluation for the micro-fault:a case study of lower oil group in Block Ⅸ of Tahe Oilfield[J].Petroleum Geology & Oilfield Development in Daqing,2020,39(5):40-50.
[21] 张文学,王勇.塔河油田碳酸盐岩油藏能量指示曲线模型建立与应用[J].大庆石油地质与开发,2019,38(1):94-99.
ZHANG Wenxue,WANG Yong.Modeling and application of the energy indicating curve for the carbonate reservoir in Tahe Oilfield[J].Petroleum Geology & Oilfield Development in Daqing,2019,38 (1):94-99.