Log processing in highly deviated wellbores

US8473212B2 · kind B2 · utility

Assignee

• SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

• Jacques R. Tabanou · Houston, US
• John Rasmus · Richmond, US
• John P. Horkowitz · Sugar Land, US
• Koji Ito · Nagoya, JP
• Christian Stolte · Winsen, DE
• Shahzad A. Asif · Richmond, US

Key dates

• Filing date: Feb 25, 2010
• Grant date: Jun 25, 2013
• Expiry date: Aug 6, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01V2210/1429
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for processing well logging data includes method dividing the well logging data into a number of constant dimensional effect segments, where each constant dimensional effect segment defines an interval having a similar dimensional effect on the log response. The well logging data is taken from a highly deviated well. The method further includes dividing the constant dimensional effect segments into a number of constant property intervals, each constant dimensional effect segment including at least one corresponding constant property interval, and each constant property interval defining a wellbore distance over which a formation property is substantially constant that results in a log response having a low variance. The method further includes providing the constant property intervals to an output device. The method further includes determining constant property intervals in 3D volume space projected them into true stratigraphic thickness, and providing the resulting log-squared data to the output device.