Abstract:The effectiveness of buried hill reservoirs is evaluated and interpreted mainly based on conventional data evaluation, and nuclear magnetic resonance, micro resistivity scanning imaging, ultrasonic borehole wall imaging, and array acoustic waves are usually utilized. The above logging technologies have shown positive application effects in the fine evaluation of reservoir effectiveness, but they also have shortcomings. In addition, there are many factors affecting the effectiveness of fractures, such as fracture density, fracture dip, etc. As a result, although the fracture occurrence can be accurately described based on electrical imaging data, it is difficult to accurately evaluate the effectiveness of buried hill reservoirs. Therefore, the application value of existing logging data is deeply explored. Through the innovative application of acoustic amplitude (hereinafter referred to as amplitude) data, the amplitude parameters mainly used for cementing quality evaluation are introduced into the effectiveness evaluation of buried hill reservoirs, which expands the application scope of acoustic data. In order to solve the problem that the amplitude data cannot be used quantitatively, an amplitude ratio method is created to quantitatively characterize the amplitude, and the effectiveness of the single-well reservoir is quantitatively evalua-ted. Furthermore, the effectiveness differences among multiple-well reservoirs are quantitatively compared. The amplitude productivity index is constructed, and an effectiveness evaluation chart for buried hill reservoirs is established according to the amplitude ratio, which improves the accuracy of reservoir effectiveness evaluation and quickly predicts reservoir productivity. The proposed method provides a new idea for evaluating the effectiveness of buried hill reservoirs.
蒋凌志,顾家裕,郭彬程.中国含油气盆地碎屑岩低渗透储层的特征及形成机理[J].沉积学报,2004,22(1):13-18.JIANG Lingzhi,GU Jiayu,GUO Bincheng.Characteri-stics and mechanism of low permeability clastic reser-voir in Chinese petroliferous basin[J].Acta Sedimentologica Sinica,2004,22(1):13-18.
[3]
李新景,胡素云,程克明.北美裂缝性页岩气勘探开发的启示[J].石油勘探与开发,2007,34(4):392-400.LI Xinjing,HU Suyun,CHENG Keming.Suggestions from the development of fractured shale gas in North America[J].Petroleum Exploration and Development,2007,34(4):392-400.
[4]
闫家伟,王文庆,吕芳芳,等.复杂碳酸盐岩储层多数据融合预测技术——以千米桥潜山奥陶系为例[J].石油地球物理勘探,2021,56(3):583-592.YAN Jiawei,WANG Wenqing,LÜ Fangfang,et al.Fusion of multiple data for predicting complex carbonate reservoirs and its application:A case study on Ordovician of Qianmiqiao buried hills[J].Oil Geophysical Prospecting,2021,56(3):583-592.
BROGLIA C,ELLIS D.Effect of alteration,formation absorption,and standoff on the response of the thermal-neutron porosity log in gabbros and basalts:Exam-ples from Deep Sea Drilling Project-Ocean Drilling Program Sites[J].Journal of Geophysical Research:Solid Earth and Planets,1990,95(B6):9171-9188.
[7]
王志章.裂缝性油藏描述及预测[M].北京:石油工业出版社,1999.
[8]
魏斌,张凤山,卢毓周,等.裂缝型储层流体类型识别技术——以辽河盆地大民屯凹陷中-新元古界潜山储层为例[J].海相油气地质,2003,8(1-2):93-98.WEI Bin,ZHANG Fengshan,LU Yuzhou,et al.A method of identifying fractured reservoir fluids:a case of Mesoproterozoic-Neoproterozoic buried-hill reservoirs in Damintun sag,Liaohe Basin[J].Marine Origin Petroleum Geology,2003,8(1-2):93-98.
[9]
赵建斌,黄显华,刘晓燕,等.二连盆地乌兰花凹陷特低渗安山岩储层的有效性评价[J].石油学报,2020,41(10):1188-1196.ZHAO Jianbin,HUANG Xianhua,LIU Xiaoyan,et al.Effectiveness evaluation of extra-low permeability andesite reservoirs in Wulanhua sag,Erlian Basin[J].Acta Petrolei Sinica,2020,41(10):1188-1196.
[10]
李雄炎,秦瑞宝,曹景记,等.复杂储层连通孔隙度评价与渗透率定量计算方法[J].石油地球物理勘探,2022,57(2):377-385.LI Xiongyan,QIN Ruibao,CAO Jingji,et al.Method of connected porosity evaluation and quantitative permeability calculation for complex reservoirs[J].Oil Geophysical Prospecting,2022,57(2):377-385.
[11]
陈东,陈力群,魏修成,等.火成岩裂缝性储层测井评价——以准噶尔盆地石炭系潜山油藏为例[J].石油与天然气地质,2011,32(1):83-90.CHEN Dong,CHEN Liqun,WEI Xiucheng,et al.Log evaluation of fractured igneous reservoirs:a case study of the Carboniferous igneous reservoirs in the Junggar Basin[J].Oil & Gas Geology,2011,32(1):83-90.
[12]
王祝文,徐方慧,刘菁华,等.辽河盆地东部凹陷含气孔、裂隙火成岩地层斯通利波响应特征[J].吉林大学学报(地球科学版),2018,48(6):1876-1888.WANG Zhuwen,XU Fanghui,LIU Jinghua,et al.Stoneley wave response characteristics of gas-bearing fracture volcanic formation in Liaohe Eastern depression[J].Journal of Jilin University(Earth Science Edition),2018,48(6):1876-1888.
[13]
张浩,王亮,司马立强,等.基于图像区域分割和卷积神经网络的电成像缝洞表征[J].石油地球物理勘探,2021,56(4):698-706,735.ZHANG Hao,WANG Liang,SIMA Liqiang,et al.Characterization of fractures and vugs by electrical imaging based on image region segmentation and convolutional neural network[J].Oil Geophysical Prospecting,2021,56(4):698-706,735.
[14]
赖生华,曹鉴华,张翠萍.声波时差长趋势脱压实校正[J].石油地球物理勘探,2020,55(5):1102-1109.LAI Shenghua,CAO Jianhua,ZHANG Cuiping.A method of decompaction correction based on long trend of interval transit time[J].Oil Geophysical Prospecting,2020,55(5):1102-1109.
[15]
毛海涛,吴波.影响声波变密度测井评价固井质量的因素[J].新疆石油地质,2010,31(3):314-317.MAO Haitao,WU Bo.Analysis of factors affecting cementing quality by acoustic (CBL)-variable density log(VDL)[J].Xinjiang Petroleum Geology,2010,31(3):314-317.
[16]
曲建芳.介质声阻抗对声波测井曲线幅度的影响研究[D].黑龙江大庆:东北石油大学,2011.
[17]
吴向红,何伶,方宏长.比采油指数曲线的分析和应用[J].石油勘探与开发,2007,34(6):745-749.WU Xianghong,HE Ling,FANG Hongchang.Analysis and application of specific productivity index[J].Petroleum Exploration and Development,2007,34(6):745-749.
[18]
钟锴,徐鸣洁,王宏,等.岩样中孔隙、裂缝声波特征的实验研究[J].石油实验地质,2002,24(2):164-167,171.ZHONG Kai,XU Mingjie,WANG Hong,et al.An experiment study on the acoustic characteristics of pores and fracture inrock samples[J].PetroleumGeology & Experiment,2002,24(2):164-167,171.