定量交会图技术及其在流体识别中的应用
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摘要
交会图技术是地震资料解释的有效手段之一。但是,交会图域内的区域划分常采用粗略描述或人工勾绘,这实际上是一种定性分析方法,存在很大的不确定性。为解决这一问题,提出了一种定量交会图分析技术。首先对交会图域内各类储层数据进行椭圆拟合,自动生成各类储层数据的空间展布;然后计算平均拟合度和重叠率这2个定量参数,对储层类别进行定量描述;最后应用基于椭圆拟合的流体属性敏感性分析方法,利用Cast- agna和Smith的含油气砂岩模型进行了流体属性可识别性分析,并优选出对含气砂岩敏感的流体属性对。
The crossplot technique is one of the effective methods for seismic data interpretation.However,for partitioning the cross- plot region,rough description or hand drawing is usually adopted, which is a qualitative analysis,making uncertainty exist.To solve this problem,the quantitative crossplot technique is proposed. Firstly,the ellipse fitting is performed for data from different kinds of reservoirs in cross-plot region to automatically generate the spa- tial distribution of data.Then,the average fitting degree and over- lap rate are calculated to quantitatively describe the reservoir cate- gory.Finally,the fluid attribute sensitivity analysis method based on ellipse fitting is adopted. Fluid attribute identifiability was stud led by using the oil sand model from Castagna and Smith and fluid attribute-pairs sensible to gas bearing sand were optimized.
The crossplot technique is one of the effective methods for seismic data interpretation.However,for partitioning the cross- plot region,rough description or hand drawing is usually adopted, which is a qualitative analysis,making uncertainty exist.To solve this problem,the quantitative crossplot technique is proposed. Firstly,the ellipse fitting is performed for data from different kinds of reservoirs in cross-plot region to automatically generate the spa- tial distribution of data.Then,the average fitting degree and over- lap rate are calculated to quantitatively describe the reservoir cate- gory.Finally,the fluid attribute sensitivity analysis method based on ellipse fitting is adopted. Fluid attribute identifiability was stud led by using the oil sand model from Castagna and Smith and fluid attribute-pairs sensible to gas bearing sand were optimized.
引文
1谢丽，徐子远，杨洪民，等．测井交会图识别技术在涩北气田的应用[J]．青海石油，2005，23(2)：1～4
2 John P C,Herbert W S.Principles of AVO crossplot- ting[J].The Leading Eage,1997,16(4):337～344
3郭全仕，严建文，朱海龙．AVO技术及其在油气检测中的应用[A]．见：张永刚，油气地球物理新进展[C]．北京：石油工业出版社，2003．9～28
4杨建礼，郝以岭，郑浚茂．东濮凹陷W405井含气砂岩弹性参数特征分析[J]．石油物探，2006，45(6)：619～623
5陈宝书，杨午阳，刘全新，等．地震属性组合分析方法及其应用[J]．石油物探，2006，45(2)：173～176
6周红涛，高楚桥．塔河油田碳酸盐岩储层类型划分[J]．石油物探，2005，44(1)：37～38，58
7张松扬，范宜仁，程相志，等．塔中地区奥陶系碳酸盐岩储层测井评价研究[J]．石油物探，2006，45(6)：630～637
8陈习峰．岩石孔隙流体交会技术最新进展[J]．勘探地球物理进展，2004，27(6)：397～401
9韩济全．用孔隙度与含水饱和度交会图识别储层流体性质[J]．勘探地球物理进展，2005，28(4)：294～296
10 John P C,Steven W S.Comparison of AVO indica- tors:a modeling study[J].Geophysics,1994,59(12): 1849～1855
11 Ebdon D.Statistics in Geography:a practical ap- proach[M].Oxford:Basil Blackwell,1997.1～240
12 Dey A K,Rai C.Quantifying uncertainties in AVO forward modeling[J-].Expanded Abstracts of 69~(th) An- nual Internat SEG Mtg,1999,77～80
2 John P C,Herbert W S.Principles of AVO crossplot- ting[J].The Leading Eage,1997,16(4):337～344
3郭全仕，严建文，朱海龙．AVO技术及其在油气检测中的应用[A]．见：张永刚，油气地球物理新进展[C]．北京：石油工业出版社，2003．9～28
4杨建礼，郝以岭，郑浚茂．东濮凹陷W405井含气砂岩弹性参数特征分析[J]．石油物探，2006，45(6)：619～623
5陈宝书，杨午阳，刘全新，等．地震属性组合分析方法及其应用[J]．石油物探，2006，45(2)：173～176
6周红涛，高楚桥．塔河油田碳酸盐岩储层类型划分[J]．石油物探，2005，44(1)：37～38，58
7张松扬，范宜仁，程相志，等．塔中地区奥陶系碳酸盐岩储层测井评价研究[J]．石油物探，2006，45(6)：630～637
8陈习峰．岩石孔隙流体交会技术最新进展[J]．勘探地球物理进展，2004，27(6)：397～401
9韩济全．用孔隙度与含水饱和度交会图识别储层流体性质[J]．勘探地球物理进展，2005，28(4)：294～296
10 John P C,Steven W S.Comparison of AVO indica- tors:a modeling study[J].Geophysics,1994,59(12): 1849～1855
11 Ebdon D.Statistics in Geography:a practical ap- proach[M].Oxford:Basil Blackwell,1997.1～240
12 Dey A K,Rai C.Quantifying uncertainties in AVO forward modeling[J-].Expanded Abstracts of 69~(th) An- nual Internat SEG Mtg,1999,77～80
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