Log evaluation in wells drilled with inverted oil emulsion mud. [GLOBAL program]
As greater use is made of inverted oil emulsion, muds in the development of North Sea oil fields, the need for more precise log evaluation in this environment becomes apparent. This paper demonstrates an approach using the Dual Induction Log, taking into account invasion and boundary effects. Lithology and porosity are derived from the Formation Density or Litho-Density Log, Compensated Neutron Log, Sonic Log and the Natural Gamma Ray Spectrometry log. The effect of invasion by the oil component of the mud filtrate is treated in the evaluation, and a measurement of Moved Water is made Computations of petrophysical properties are implemented by means of the GLOBAL interpretation program, taking advantage of its capability of adaption to any combination of logging sensors. 8 refs.
- Research Organization:
- Schlumberger Inl Serv Inc
- OSTI ID:
- 6222066
- Report Number(s):
- CONF-811023-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Conference: 1981 SPE annual technical conference and exhibition, San Antonio, TX, USA, 4 Oct 1981
- Country of Publication:
- United States
- Language:
- English
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