测井约束地震反演技术在塔河油田碎屑岩储层预测中的应用
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摘要
塔河油田T759井区白垩系卡普沙良群舒善河组目的层段的砂岩层较薄,砂、泥岩之间的阻抗差异较小,因此不能有效地对砂体进行追踪,给储量计算带来了一定困难。为此,针对该井区目的层段开展了储层测井地震约束反演研究。首先,对T759井区测井资料进行了分析,认为自然电位测井曲线可以较好地区分砂、泥岩;然后,采用精细井震标定、子波提取、初始模型建立、主组分分析、模型估算等方法进行测井约束地震反演,得到舒善河组的自然电位反演数据体,绘制了舒善河组自然电位反演均方根平面图,对砂体的展布特征进行了描述。
The target sand layers in Shushanhe formation of Cretaceous at T759 block in Tahe Oilfield can not be distinguished for the thin sands embedded in mudstones and the tiny P-impedance difference between sands and mudstone.How to get reliable data for reserves estimation has become a difficulty in the exploration.In order to solve the problem,corresponding reservoir seismic constrained inversion methods are studied in the area.Firstly,spontaneous potential is considered as a valid indicator for sands embedded in mudstones based on the log analysis.Then,through the application of reservoir inversion including fine well-to-seismic calibration,wavelet extraction,model initialization,principal component analysis, model parameter estimation and log constrained inversion,the spontaneous potential inversion data cube of Shushanhe formation of Cretaceous at T759 block in Tahe Oilfield is obtained and used for drawing root-mean-square plane graph of spontaneous potential inversion to predict sandstone distribution.
The target sand layers in Shushanhe formation of Cretaceous at T759 block in Tahe Oilfield can not be distinguished for the thin sands embedded in mudstones and the tiny P-impedance difference between sands and mudstone.How to get reliable data for reserves estimation has become a difficulty in the exploration.In order to solve the problem,corresponding reservoir seismic constrained inversion methods are studied in the area.Firstly,spontaneous potential is considered as a valid indicator for sands embedded in mudstones based on the log analysis.Then,through the application of reservoir inversion including fine well-to-seismic calibration,wavelet extraction,model initialization,principal component analysis, model parameter estimation and log constrained inversion,the spontaneous potential inversion data cube of Shushanhe formation of Cretaceous at T759 block in Tahe Oilfield is obtained and used for drawing root-mean-square plane graph of spontaneous potential inversion to predict sandstone distribution.
引文
1刘爱群,盖永浩.测井约束反演过程中测井资料统计分析研究[J].地球物理学进展,2007,22(5):1487- 1492
2王延光.储层地震反演方法以及应用中的关键问题与对策[J].石油物探,2002,41(3):299-303
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5孟宪军.约束反演中的三维复杂约束模型研究[A].见:仝兆岐,编.储层地震技术新进展[C].东营:石油大学出版社,2004.107-112
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11郭朝斌,杨小波,陈红岳,等.约束稀疏脉冲反演在储层预测中的应用[J].石油物探,2006,45(4):397-400
12杨少虎,黄玉生,彭文绪,等.声波重构技术在储层反演中的应用[J].石油地球物理勘探,2006,41(2):171- 176
13付志方,张君,邢卫新,等.拟声波构建技术在砂泥岩薄互层储层预测中的应用[J].石油物探,2006,45(4): 415-417
14刘淑华,张宗和.储层特征曲线重构反演技术——以冀东油田南堡凹陷为例[J].勘探地球物理进展,2008, 31(1):53-58
15谭明友,张建宁.地震反演结果的评价方法[J].石油物探,2004,43(6):551-555
2王延光.储层地震反演方法以及应用中的关键问题与对策[J].石油物探,2002,41(3):299-303
3凌云.测井与地震信息标定研究[J].石油地球物理勘探,2004,39(1):68-74
4杨占龙,沙雪梅.储层预测中层位—储层的精细标定方法[J].石油物探,2005,44(6):627-631
5孟宪军.约束反演中的三维复杂约束模型研究[A].见:仝兆岐,编.储层地震技术新进展[C].东营:石油大学出版社,2004.107-112
6段云卿,王彦春,覃天,等.储层地震反演在辽河油田大民屯凹陷的应用[J].地球科学,2007,32(4):554-558
7李方明,计智锋,赵国良,等.地质统计反演之随机地震反演方法——以苏丹M盆地P油田为例[J].石油勘探与开发,2007,34(4):451-455
8凌云,惠晓宇,孙德胜,等.薄储层叠后反演影响因素分析与地震属性解释研究[J].石油物探,2008,47(6): 531-558
9杨林.于奇西地区砂泥岩薄互层反演方法应用研究[J].石油物探,2008,47(2):186-190
10尹兵祥,杨剑萍,尹克敏.东营凹陷民丰断裂带地区地震反演及储层预测[J].石油物探,2007,46(5):484- 487
11郭朝斌,杨小波,陈红岳,等.约束稀疏脉冲反演在储层预测中的应用[J].石油物探,2006,45(4):397-400
12杨少虎,黄玉生,彭文绪,等.声波重构技术在储层反演中的应用[J].石油地球物理勘探,2006,41(2):171- 176
13付志方,张君,邢卫新,等.拟声波构建技术在砂泥岩薄互层储层预测中的应用[J].石油物探,2006,45(4): 415-417
14刘淑华,张宗和.储层特征曲线重构反演技术——以冀东油田南堡凹陷为例[J].勘探地球物理进展,2008, 31(1):53-58
15谭明友,张建宁.地震反演结果的评价方法[J].石油物探,2004,43(6):551-555
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