Difference between model parameter estimation and curve fitting |
| |
| Authors: | Jason E Curoe and R E Nasburg |
| |
| Institution: | (1) Mobil Exploration & Producing Services Inc., P.O. Box 900, 75221 Dallas, Texas, USA;(2) Texas Instruments, Dallas, Texas, USA |
| |
| Abstract: | Within a single well, a least-squares model such as Ø = a +b T
sonic
may be appropriate, insofar as random errors in core measurement and in sonic tool response are concerned. However, if several wells are in the reservoir, and if structural variation across the field exists, no single least-squares solution will adequately describe all wells with the same precision. Interpolation, via a cubic spline, is offered as an alternative to model this type of variation. However, to control both inter- and intra-well variability, a combination of least squares and interpolation is the model of choice. |
| |
| Keywords: | Model parameter estimation porosity bicubic spline least squares |
| 本文献已被 SpringerLink 等数据库收录！ |
|
