Silicate drilling fluid and method of drilling a well therewith

Details Silicate drilling fluid and method of drilling a well therewith Silicate drilling fluid and method of drilling a well therewith

2006-11-21

2006-11-21

Suchfield, George (Department: 3676)

Boring or penetrating the earth

With signaling, indicating, testing or measuring

C073S152190, C073S152430, C175S065000, C175S072000, C507S140000, C507S141000, C507S145000

Reexamination Certificate

active

07137459

ABSTRACT:
The invention discloses methods of formulating an alkali metal silicate-containing drilling fluid and drilling a well therewith. Thus an alkali metal silicate is added to an aqueous base drilling fluid, when the drilling fluid is being circulated while drilling, at a rate sufficient to react with the drilled cuttings and freshly exposed surface of the borehole while leaving very little excess soluble silicate in the drilling fluid circulated to the surface. The rate of addition of the silicate is based on the circulation rate of the drilling fluid in the wellbore and the volume of the hole being drilled.

REFERENCES:
patent: 2133759 (1938-10-01), Vail et al.
patent: 2146693 (1939-02-01), Vietti et al.
patent: 3259189 (1966-07-01), Darley
patent: 3679001 (1972-07-01), Hill
patent: 3746109 (1973-07-01), Darley
patent: 4988450 (1991-01-01), Wingrave et al.
patent: 5211250 (1993-05-01), Kubena et al.

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