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.
Chang Baohua
,
Li Shiyin
,
Cao Wen
,
Liu Zhiliang
,
Lu Linlin
. Prediction Method of Key Development Indicators of Fracture-cavity Carbonate Reservoirs and Its Application[J]. Special Oil & Gas Reservoirs, 2021
, 28(2)
: 72
-77
.
DOI: 10.3969/j.issn.1006-6535.2021.02.010
[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.
