针对缝洞型碳酸盐岩油气藏关键开发指标预测难度大的问题,运用物质平衡理论、井控动态储量评价及已投产储集体动态、静态参数回归分析等方法,建立了由孤立缝洞型油气藏到区块整体的关键开发指标预测方法,可相对准确地预测单井及区块的可动用储量、可采储量、采收率及气举措施增产油气量等关键开发指标。研究方法应用于中古I区块,结果表明:该区块天然能量情况下油、气可采储量分别为85.8×104、26.6×108m3,油、气采收率分别为27.8%、59.2%,区块内未投产储集体可动用储量规模为36.4×108m3,气举措施后油、气采收率分别为32.6%、68.4%,气平均举措施油、气采收率增幅分别为4.8、9.2个百分点。该方法可以有效预测此类油气藏单井储集体及区块的关键开发指标,为开发方案编制及技术政策制订提供依据。
In view of the heavy difficulties in prediction of key development indicators of fractured-cavity carbonate reservoirs, a prediction method was established for the key development indicators from isolated fracture-cavity reservoirs to the whole block on the basis of the theories of material balance, well-controlled dynamic reserves evaluation, and regression analysis of the dynamic and static parameters of the reservoir bodies in production. With the aid of this method, relatively accurate predication results were obtained for key development indicators of single well, even the whole block, including available reserves, recoverable reserves, recovery efficiency, and gas lift measures for oil enhancement. This method applied to the Zhonggu I Block, and the results indicated that the recoverable oil and gas reserves of the block were 85.8×104m3 and 26.6×108m3 respectively, and the oil and gas (decreasing) recovery rates were 27.8% and 59.2% respectively, the recoverable reserves of remaining reservoir bodies not put in production in the block are 36.4×108m3, the oil and gas recovery rates after gas lift were 32.6% and 68.4% respectively, increased by 4.8、9.2 percentage points. This method can effectively predict the key development indicators of single-well reservoir bodies and blocks of such oil and gas reservoirs, providing a basis for the formulation of development plans and technical policies.
[1] ROEHL P O,CHOQUETTE P W.Introduction:Carbonate petroleum reservoirs[M].New York:Springer Verlag,1985:1-15.
[2] ROEHL P O,CHOQUETTE P W.Perspectives on world-class carbonate petroleum reservoirs[C].AAPG Memoir 69,Tulsa:AAPG,1985:148.
[3] 马永生,何登发,蔡勋育,等.中国海相碳酸盐岩的分布及油气地质基础问题[J].岩石学报,2017,33(4):1007-1020.
MA Yongsheng,HE Dengfa,CAI Xunyu,et al.Distribution and fundamental science questions for petroleum geology of marine carbonate in China[J].Acta Petrologica Sinica,2017,33(4):1007-1020.
[4] 康玉柱. 中国古生代碳酸盐岩古岩溶储集特征与油气分布[J].天然气工业,2008,28(6):1-12.
KANG Yuzhu.Characteristics and distribution laws of paleokarst hydrocarbon reservoirs in Palaeozoic carbonate formations in China[J].Natural Gas Industry,2008,28(6):1-12.
[5] 戴彩丽,方吉超,焦保雷,等.中国碳酸盐岩缝洞型油藏提高采收率研究进展[J].中国石油大学学报(自然科学版),2018,42(6):67-78.
DAI Caili,FANG Jichao,JIAO Baolei,et al.Development of the research on EOR for carbonate fractured-vuggy reservoirs in China[J].Journal of China University of Petroleum (Edition of Natural Science),2018,42(6):67-78.
[6] 马永生,何治亮,赵培荣,等.深层—超深层碳酸盐岩储层形成机理新进展[J].石油学报,2019,40(12):1415-1425.
MA Yongsheng,HE Zhiliang,ZHAO Peirong,et al.A new progress in formation mechanism of deep and ultra-deep carbonate reservoir[J].Acta Petrolei Sinica,2019,40(12):1415-1425.
[7] 余智超,王志章,魏荷花,等.塔河油田缝洞型油藏不同成因岩溶储集体表征[J].油气地质与采收率,2019,26(6):53-61.
YU Zhichao,WANG Zhizhang,WEI Hehua,et al.Characterization of fracture-cave karst reservoirs with different genesis in Tahe Oilfield[J].Petroleum Geology and Recovery Efficiency,2019,26(6):53-61.
[8] 杨海军,朱光友,韩剑发,等.塔里木盆地塔中礁滩体大油气田成藏条件与成藏机制研究[J].岩石学报,2011,27(6):1865-1885.
YANG Haijun,ZHU Guangyou,HAN Jianfa,et al.Conditions and mechanism of hydrocarbon accumulation in large reef-bank karst oil/gas fields of Tazhong Area,Tarim Basin[J].Acta Petrologica Sinica,2011,27(6):1865-1885.
[9] 鲁新便,胡文革,汪彦,等.塔河地区碳酸盐岩断溶体油藏特征与开发实践[J].石油与天然气地质,2015,36(3):347-355.
LU Xinbian,HU Wenge,WANG Yan,et al.Characteristics and development practice of fault-karst carbonate reservoirs in Tahe Area,Tarim Basin[J].Oil & Gas Geology,2015,36(3):347-355.
[10] 赵宽志,张丽娟,郑多明,等.塔里木盆地缝洞型碳酸盐岩油气藏储量计算方法[J].石油勘探与开发,2015, 42(2):251-256.
ZHAO Kuanzhi,ZHANG Lijuan,ZHENG Duoming,et al.A reserve calculation method for fracture-cavity carbonate reservoirs in Tarim Basin, NW China[J].Petroleum Exploration and Development,2015,42(2):251-256.
[11] 肖阳,何文,罗慎超,等.缝洞单元类型快速识别方法[J].油气地质与采收率,2018,25(6):120-126.
XIAO Yang,HE Wen,LUO Shenchao,et al.A fast recognition method of fractured-vuggy unit type[J].Petroleum Geology and Recovery Efficiency,2018,25(6):120-126.
[12] 陈元千,李璗. 现代油藏工程[M].北京:石油工业出版社,2000:89,112.
CHEN Yuanqian,LI Dang.Advanced Reservoir Englishering[M].Beijing:Petroleum Industry Press,2000:89,112.
辽公网安备 21110002000031号 辽ICP备18011648号-1
