Title:
CEMENT EVALUATION
Document Type and Number:
WIPO Patent Application WO/2014/160817
Kind Code:
A3
Abstract:
Surface equipment of a cement analysis system (CAS) estimates a first drilling fluid slowness (FSLO) and a first drilling fluid acoustic impedance (ZMUD) based on a type and density of wellbore drilling fluid. A second FSLO is estimated based on a thickness and diameter of wellbore casing and transit time for energy emitted by a downhole tool to travel to and from the casing. An FSLO graphical interface is generated based on the first and second FSLO. A second ZMUD is estimated based on the drilling fluid type and density and one of the first and second FSLO selected utilizing the FSLO graphical interface. A ZMUD graphical interface is generated based on the first and second ZMUD. The downhole tool then obtains log data utilizing at least one parameter selected utilizing the ZMUD graphical interface. The log data includes a final ZMUD measured with respect to wellbore depth.
Inventors:
HAYMAN ANDREW J (FR)
Application Number:
PCT/US2014/031930
Publication Date:
December 04, 2014
Filing Date:
March 27, 2014
Export Citation:
Assignee:
SCHLUMBERGER CA LTD (CA)
SCHLUMBERGER SERVICES PETROL (FR)
SCHLUMBERGER HOLDINGS
SCHLUMBERGER TECHNOLOGY BV (NL)
PRAD RES & DEV LTD
SCHLUMBERGER TECHNOLOGY CORP (US)
SCHLUMBERGER SERVICES PETROL (FR)
SCHLUMBERGER HOLDINGS
SCHLUMBERGER TECHNOLOGY BV (NL)
PRAD RES & DEV LTD
SCHLUMBERGER TECHNOLOGY CORP (US)
International Classes:
E21B47/00; G01V1/50
Foreign References:
| US20060067162A1 | 2006-03-30 | |||
| US6041861A | 2000-03-28 | |||
| US6050141A | 2000-04-18 | |||
| US20060133205A1 | 2006-06-22 |
Attorney, Agent or Firm:
CHI, Stephanie et al. (IP Administration Center of ExcellenceRoom 472, Houston Texas, US)
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