中国石油大学学报（自然科学版）2018，Vol.42Issue(4)：41-49,9.DOI:10.3969/j.issn.1673-5005.2018.04.005
基于空间响应分布函数的水平井补偿密度测井快速正演模拟
Fast forward simulation of compensated density logging in horizontal wells based on spatial response distribution function
摘要
Abstract
Monte Carlo method is commonly used in forward simulations of compensated density logging in horizontal wells, but is computationally time-consuming and cannot meet the needs for real-time production evaluation.In this paper, a fast forward simu-lation method of compensated density logging is developed, and a spatial response distribution function is introduced to describe the contribution of gamma ray field distribution and different formation volume elements to the detector counts.Monte Carlo simulation is then employed to establish the database of fast forward simulation in advance.The spatial response distribution function is used to calculate the contribution of different formation regions to the detector counts, and the fast forward simulation of density logging is realized.The numerical simulation results show that the new method can provide results with the same accuracy as regular Monte Carlo simulation method, but the computation speed is increased by over two orders of magnitude, which can meet the needs for determining the relation between well trajectory and drilled formation in the horizontal well.关键词
补偿密度测井/井眼轨迹与地层关系/快速正演模拟/空间响应分布函数/蒙特卡罗方法Key words
compensated density logging/relation between well trajectory and formation/fast forward simulation/spatial re-sponse distribution function/Monte Carlo method分类
天文与地球科学引用本文复制引用
袁超,李潮流,周灿灿,葛云龙..基于空间响应分布函数的水平井补偿密度测井快速正演模拟[J].中国石油大学学报（自然科学版）,2018,42(4):41-49,9.基金项目
中国石油天然气集团公司科学研究与技术开发项目(2016A-3601) （2016A-3601）
