Well logging to determine the nature and extent of mud filtrate

Details Well logging to determine the nature and extent of mud filtrate Well logging to determine the nature and extent of mud filtrate

1980-12-24

1982-10-12

Myracle, Jerry W.

Measuring and testing

Borehole or drilling

Downhole test

E21B 4700

Patent

active

043532489

ABSTRACT:
A method of open borehole logging is disclosed which provides a mud filtrate penetration index which is proportional to the degree of mud filtrate invasion causing residual oil removal from the vicinity immediately surrounding the borehole. The present invention utilizes a unique combination of formation density logging, dielectric constant logging and gravity meter measurement techniques to arrive at this mud filtrate penetration index, which may also be used to evaluate the probable reliability of residual oil determinations made by these or other logging techniques.

REFERENCES:
patent: 3893020 (1975-07-01), Meador et al.
patent: 4245313 (1981-01-01), Coates

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