Cementing method to improve well logging measurements in cased w

Details Cementing method to improve well logging measurements in cased w Cementing method to improve well logging measurements in cased w

1977-05-31

1978-10-24

Dixon, Harold A.

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

250259, G01V 500

Patent

active

041223411

ABSTRACT:
According to the method of the present invention a well cement having a high thermal neutron capture cross section is used when cementing the well casing in place. This, possibly together with the use of other high thermal neutron capture cross section materials in the borehole, such a highly saline borehole fluid and/or high thermal neutron capture cross section material sleeves on the well logging sonde, increases the effective depth of investigation of thermal neutron lifetime well logging instrumentation.

REFERENCES:
patent: 2862106 (1958-11-01), Scherbatskoy
patent: 2910591 (1959-10-01), Baker
patent: 3065346 (1962-11-01), Dewan et al.
patent: 3462600 (1969-08-01), Dewan

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