基于剖面的水平井随钻测井曲线成图技术  

Mapping techniques on LWD curves of horizontal well based on seismic section

作　　者：张伟[1,2] 朱丽萍[1,2] 李洪奇[1,2] 

机构地区：[1]中国石油大学(北京)地球物理与信息工程学院,北京102249 [2]中国石油大学(北京)石油数据挖掘北京市重点实验室,北京102249

出　　处：《信息技术》2016年第4期56-59,68,共5页Information Technology

基　　金：国家"十五"科技攻关项目(2001BA605A09);国家重大专项子课题(G5800-08-ZS-WX)

摘　　要：为了提升水平井地质导向建模的精确度,提出一种在地震剖面上沿着井眼轨迹显示随钻测井曲线的方法。根据井斜数据为离散点数据组的特性,采用最小曲率半径法计算井斜数据,并通过投影图示法在剖面上显示二维井眼轨迹;同时引入平行曲线的概念,利用差分格式计算出井眼轨迹上每个离散点的对应平行点,经过曲线拟合和平滑操作形成剖面上的测井曲线道和曲线。基于.NET平台,采用C#语言,形成具有交互操作的水平井随钻测井曲线可视化系统。实验和测试结果表明,通过对比剖面形态和曲线形态,该可视化技术能有效地帮助解释人员了解地质形态,对水平井地质导向有着良好的指导作用。In order to improve the modeling accuracy of horizontal well geosteering,a new method of showing LWD curves along the well trajectory on seismic section is proposed. In view of the characteristics of well deviation data for discrete point data set,well deviation data is calculated by the method of minimum curvature radius and then displaying the two-dimensional well trajectory on seismic section through projection diagram method. Meanwhile,it introduces the concept of parallel curves and then calculating the corresponds parallel point coordinate for each discrete point on well trajectory by difference scheme. The logging curve tracks and logging curves would be added on the section to display after operating curve fitting and smoothing. The LWD curves visualization system is implemented by C# language based on the. NET platform with interactive operation. The experiment and test for the system proves that the visualization techniques can effectively help the professional explain the geological morphology and play a good guiding role on horizontal well geosteering through comparing shapes between profile and curve.

关 键 词：水平井 井眼轨迹 平行曲线 离散点 随钻测井曲线 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论] P631.8[自动化与计算机技术—计算机科学与技术]