ABSTRACT In order to estimate intensity and direction of pressure acted on oil
well in horizontal, this paper proposes an algorithm of ellipse fitting based
on least square method for sections of oil well with ultrasonic imaging logging
data. Five parameters about ellipse corresponding to the sections of oil well
are extracted and their geometry deformations and direction are estimated. The
tested results show that the fitting algorithm is robust and the estimating
error of parameter is small, which have very important practical significance
on processing the well logging.
Cite this paper
Tu, J. and Yang, B. (2014) The Research of Ellipse Parameter Fitting Algorithm of Ultrasonic Imaging Logging in the Casing Hole. Applied Mathematics, 5, 1317-1321. doi: 10.4236/am.2014.58124.
 Pang, J.F., et al. (2008) Logging Principle and Instrument. Science Press, Beijing, 328-353.
 Lu, F., Gao, H.J. and Li, J. (2009) A High Performance Ultrasonic TV Imaging Logging Tool. Well Logging Technology, 33, 275-278.
 Yu, H.Q., Qu, W.L. and Huang, Z.L. (1997) The Influences of Tool Eccentricity in a Casing Well on Ultrasonic Echo. Journal of Huazhong University of Science and Technology, 25, 40-43.
 Yu, H.Q., Qu, W.L. and Huang, Z.L. (1999) Influence of Tool Eccentricity in a Well Casing on the Ultrasonic Tele- viewer Image and Its Correction Processing. Applied Acoustics, 18, 16-20, 43.
 Liu, S.G., Li, P. and Na, Y.L. (2002) Evaluation of the Form Error of Ellipse Based on Least Square Method. Acta Metrologica Sinica, 23, 245-247.