Other

Dresser Industries, Inc.

Agip S.p.a.

Marco Brignoli

Stefano Carminati

Alberto F Marsala

Philippe Fanuel

Alberto Guarneri

Cor Kenter

Frederic Santarelli

Rune Holt

Elio Rossi

Adriano Figoni

Composition of water-based drilling fluids characterized in that they comprise an oil in water emulsion.

Drilling fluids comprising oil emulsions in water

Composition of water-based drilling fluids characterized in that they comprise anions with a high hydrodynamic radius.

Water-based drilling fluid containing anions with a high hydrodynamic radius

Core sampling method and core sampler therefor

The present invention relates to a device used for the direct measurement of the permeability of rock fragments coming directly from the drilling of an oil well and commonly called cuttings, consisting of a hollow cylindrical body (c) that presents an inlet hole for the fluid (i), a thread for closing it (h) and a hydraulic seal (g) in which is placed the sample holder disk (d) which rests on the seal (g) and is overlapped by a porous sintered steel septum (e) on which a closing plug (f) is situated with an outlet hole for the fluid (i') and the same is also provided with a thread (h') to enable it to close on the body (c). The device can be used to obtain, directly on site, the measurement of permeability along the whole length of an oil well.

Device for measuring the permeability of rock fragments

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Brugherio, Italy

Marco Brignoli