利用有限元法绘制区域地层可钻性剖面  

Creating Formation Drillability Plane Based on Finite Element Method

作　　者：杨明合[1] 翟应虎[1] 马元普 

机构地区：[1]中国石油大学(北京)石油天然气工程学院 [2]青海省工业学校,青海西宁810000

出　　处：《石油钻探技术》2007年第5期58-60,共3页Petroleum Drilling Techniques

摘　　要：采用常规曲面拟合或插值方法绘制区域地层可钻性剖面的过程相当复杂,且若多项式选择不当,计算精度往往得不到保证,很难满足实际需要。针对该问题,提出了一种基于有限单元法理论绘制区域可钻性剖面的计算方法,并以平面四节点矩形单元为例,给出了具体的计算过程。计算结果表明,该方法计算简单、精度较高,不仅可以用来绘制区域可钻性剖面,同时还可以用来绘制其它地层抗钻特性参数剖面。The traditional method using surface fitting or interpolation to plot formation drillability plane is complex, and the accuracy cannot be guaranteed if some parameters cannot be selected properly. Therefore it cannot meet the field requirements. A finite element method was proposed to plot the formation drillability plane and a four node rectangular was used as an example to illustrate the computation procedure. The results indicate that this method is simple and has higher accuracy. It can be used to plot the formation drillability plane and other formation parameter planes.

关 键 词：地层可钻性 地层剖面 地层函数 有限元法 

分 类 号：TE21[石油与天然气工程—油气井工程]