Enzymatic decomposition of drilling mud

Details Enzymatic decomposition of drilling mud Enzymatic decomposition of drilling mud

1990-12-21

1992-06-30

Wyse, Thomas

Liquid purification or separation

Processes

Treating by enzyme

210747, 210768, 435262, C02F 1112

Patent

active

051260514

ABSTRACT:
Drilling mud is rapidly decomposed by admixing one or more enzymes with the mud to selectively degrade one or more polymeric organic viscosifiers therein. A method of cleaning up a well site drilling mud pit containing drilling mud is provided. Also provided are a composition and method of removing residual drilling mud from a wellbore and around the well face.

REFERENCES:
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patent: 2651500 (1953-09-01), Teichmann
patent: 2681704 (1954-06-01), Menaul
patent: 2801218 (1957-07-01), Menaul
patent: 2807570 (1957-09-01), Updegraff
patent: 3288211 (1966-11-01), Johnston
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patent: 3635797 (1972-01-01), Battistoni
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patent: 4039028 (1977-08-01), Knight
patent: 4414334 (1983-11-01), Hitzman
patent: 4450908 (1984-05-01), Hitzman
patent: 4940539 (1990-07-01), Weber
Bulletin issued by the American Petroleum Institute entitled "Oil and Gas Well Drilling Fluid Chemicals", API Bul. 13F (1st Ed. Aug. 1978).

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