Water soluble invert emulsions

Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component

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507261, 507939, C09K 706, C09K 702

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active

059900504

ABSTRACT:
A drilling fluid and an invert emulsion fluid having utility for drilling, completing or working over subterranean oil and gas wells are disclosed. The drilling fluid includes a continuous phase that includes a preferentially-oil-soluble glycol ether which has a viscosity at 25.degree. C. of at least 10 centipoise, and an emulsifier. The invert emulsion fluid includes a oleaginous fluid including a preferentially-oil-soluble glycol ether which is miscible in oil and is such that less than 10% by volume of the glycol ether is miscible in fresh water at 20.degree. C., that is to say 10% by volume of the glycol ether mixed in fresh water results in two phases. The invert emulsion fluid also includes a nonoleaginous fluid and an emulsifier which is functionally effective to stabilize the invert emulsion. In one embodiment, glycol ether is selected from propylene glycol n-butyl ether; dipropylene glycol n-butyl ether; tripropylene glycol n-butyl ether; tetra propylene glycol n-butyl ether; pentapropylene glycol n-butyl ether; hexapropylene glycol n-butyl ether; heptapropylene glycol n-butyl ether and combinations thereof. The fluids of the present invention may also contain weighting agents, bridging agents, wetting agents, corrosion inhibitors and other components of drilling fluids that are known in the art.

REFERENCES:
patent: H1611 (1996-11-01), Patel
patent: 4464269 (1984-08-01), Walker et al.
patent: 4747969 (1988-05-01), Rupilius et al.
patent: 4830765 (1989-05-01), Perricone et al.
patent: 4941981 (1990-07-01), Perricone et al.
patent: 4963273 (1990-10-01), Perricone et al.
patent: 4964615 (1990-10-01), Mueller et al.
patent: 5057234 (1991-10-01), Bland et al.
patent: 5072794 (1991-12-01), Hale et al.
patent: 5120708 (1992-06-01), Melear
patent: 5141920 (1992-08-01), Bland et al.
patent: 5348938 (1994-09-01), Mueller et al.
Aldrich Katalog Handbuch Feinchemikalien, Aldrich GmbH & Co. KG, Steinheim/DE (1994), p. 557.
Dickey, Parke A.; Petroleum Development Geology, 2nd Ed.; Penn Well Books before 1988, pp. 57-83.
The Dow Chemical Company; Physical Properties Of Dowanol Glycol Ethers And Acetates; table; Jun. 1995.
The Dow Chemical Company; Material Safety Data Sheet, Oct. 20, 1997.
The Dow Chemical Company; Product Information--Dowanol DPNB, Apr. 1997.
The Dow Chemical Company; Product Information--Dowanol PNB, Apr. 1997.
The Dow Chemical Company; The Glycol Ethers Handbook, Oct. 1993.
Chemical Abstract Services Search Report, Oct. 27, 1997.

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