WO2014127059 APPARATUS AND METHODS OF RUNNING CASING IN A DUAL GRADIENT SYSTEM

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Publication Number WO/2014/127059

Publication Date 21.08.2014

International Application No. PCT/US2014/016129

International Filing Date 12.02.2014

IPC

CPC

Applicants

WEATHERFORD TECHNOLOGY HOLDINGS, LLC [US]/[US]

Inventors

BUDDE, Marcel
LIRETTE, Brent J.
LOGIUDICE, Michael

Agents

PATTERSON, William B.

Priority Data

61/763,827

12.02.2013

Publication Language English (en)

Filing Language English (EN)

Designated States

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Title

(EN) APPARATUS AND METHODS OF RUNNING CASING IN A DUAL GRADIENT SYSTEM

(FR) APPAREILS ET PROCÉDÉS POUR LA MISE EN PLACE D'UN TUBAGE DANS UN SYSTÈME À DOUBLE GRADIENT

Abstract

(EN) A method of running casing in a dual gradient system includes lowering a casing into a low density fluid region and allowing the low density fluid to enter the casing; releasing a plug into the casing; supplying a high density fluid behind the plug; and lowering the casing into a high density fluid region until target depth is reached.

(FR) L'invention concerne un procédé de mise en place d'un tubage dans un système à double gradient, consistant à descendre un tubage dans une région de fluide à basse densité et à faire entrer ledit fluide dans le tubage; à dégager un bouchon dans le tubage; à acheminer un fluide à haute densité à l'arrière du bouchon; et à descendre le tubage dans une région de fluide à haute densité jusqu'à ce que la profondeur cible soit atteinte.

E	FIXED CONSTRUCTIONS
21	EARTH OR ROCK DRILLING; MINING
B	EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
33	Sealing or packing boreholes or wells
10	in the borehole
13	Methods or devices for cementing, for plugging holes, crevices, or the like
14	for cementing casings into boreholes
16	using plugs for isolating cement charge; Plugs therefor

E	FIXED CONSTRUCTIONS
21	EARTH OR ROCK DRILLING; MINING
B	EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
43	Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
02	Subsoil filtering
10	Setting of casings, screens or liners in wells

E	FIXED CONSTRUCTIONS
21	EARTH OR ROCK DRILLING; MINING
B	EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
21	Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

E	FIXED CONSTRUCTIONS
21	EARTH OR ROCK DRILLING; MINING
B	EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
21	Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
08	Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure

E	FIXED CONSTRUCTIONS
21	EARTH OR ROCK DRILLING; MINING
B	EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
33	Sealing or packing boreholes or wells
10	in the borehole
13	Methods or devices for cementing, for plugging holes, crevices, or the like
14	for cementing casings into boreholes
16	using plugs for isolating cement charge; Plugs therefor

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1. WO2014127059 - APPARATUS AND METHODS OF RUNNING CASING IN A DUAL GRADIENT SYSTEM

E	FIXED CONSTRUCTIONS
21	EARTH DRILLING; MINING
B	EARTH DRILLING, e.g. DEEP DRILLING
21	Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
001	specially adapted for underwater drilling