一种提高波阻抗反演建模精度的方法

英文篇名：A Method of Improving Modeling Precision of Wave Impedance Inversion
中文刊名：江汉石油职工大学学报
英文刊名：Journal of Jianghan Petroleum University of Staff and Workers
作者：朱勇 ; 唐斌
英文作者：ZHU Yong1 ; TANG Bing2(1.School of Geophysics and Petroleum Resources of Changjiang University ; Jingzhou Hubei ; 434023 ; China ; 2.Geophysical Exploration Research Institute of Jianghan Oilfield Company ; SINOPEC ; Qianjiang Hubei ; 433100 ; China)
中文关键词：储层预测 ; 波阻抗反演 ; 模型法 ; 初始模型 ; 一般模型 ; 高精度模型
英文关键词：Reservoirs Prediction ; Wave Impedance Inversion ; Model Method ; Initial Models ; Common Models ; Models with High Precision
出版日期：2007-11-20
机构：长江大学地球物理与石油资源学院,江汉油田分公司物探研究院湖北荆州434023,湖北潜江433100
年：2007
期：06
出版单位：江汉石油职工大学学报

摘要

波阻抗反演是储层预测的重要手段之一。反演按计算方法可分为递推法和模型法两大类。其中模型法反演具有分辨率高、抗干扰能力强等优点,但具有多解性却是其致命点,反演结果依赖于初始模型。为了解决多解性问题,提高了一种新的建模方法,在常规建模的基础上,利用波形对比方法对模型进行修正,克服了由于地震层位解释不准以及地层与解释层位关系复杂造成的模型出现的偏差现象。此外,在模型上加上地震道积分信息,使模型融入了更加丰富的地震信息,从而提高建模精度和反演质量。
Wave impedance inversion is one of the most important measures of reservoir prediction.According to calculating methods it can be divided into two types: recursion method and model method.Model method has the advantage of high resolution and anti-jamming ability.But multi-solution is its fatal problem.And the inversion result depends on the initial models.To solve the multi-solution problem,this article presents a new modeling method that waveform comparison method is used to modify the model on the base of conventional modeling,which corrects the model deviation caused by incorrect seismic layer interpretation and the complicated relations between strata and interpretation layers.Furthermore,seismic channel integral information added into the model makes our model contain richer seismic information,thus improving modeling precision and inversion quality.

引文

[1]李庆忠.走向精确勘探的道路[M].北京:石油工业出版社,1993.
[2]周丽清,赵丽敏等.高分辨率地震约束相建模[J].石油勘探与开发,2002,29(3).
[3]杨邵国,杨长春.一种基于模型的波阻抗反演方法[J].物探化探计算技术,1999,21(4).