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1. (WO2019063972) METHOD OF CONTROLLING A WELL
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Pub. No.: WO/2019/063972 International Application No.: PCT/GB2018/052658
Publication Date: 04.04.2019 International Filing Date: 18.09.2018
IPC:
E21B 29/06 (2006.01) ,E21B 29/08 (2006.01) ,E21B 34/06 (2006.01) ,E21B 43/17 (2006.01) ,E21B 7/04 (2006.01)
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
29
Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
06
Cutting windows, e.g. directional window cutters for whipstock operations
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
29
Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
08
Cutting or deforming pipes to control fluid flow
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
34
Valve arrangements for boreholes or wells
06
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
43
Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
16
Enhanced recovery methods for obtaining hydrocarbons
17
Interconnecting two or more wells by fracturing or otherwise attacking the formation
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
7
Special methods or apparatus for drilling
04
Directional drilling
Applicants:
METROL TECHNOLOGY LIMITED [GB/GB]; Unit 24, Kirkhill Place Kirkhill Industrial Estate Dyce, Dyce Aberdeen Aberdeenshire AB21 0GU, GB
Inventors:
ROSS, Shaun Compton; GB
JARVIS, Leslie David; GB
Agent:
HGF LIMITED; Document Handing HGF Aberdeen 1 City Walk Leeds West Yorkshire LS11 9DX, GB
Priority Data:
1715584.726.09.2017GB
Title (EN) METHOD OF CONTROLLING A WELL
(FR) PROCÉDÉ DE RÉGULATION D'UN PUITS
Abstract:
(EN) A method of controlling a well in a geological structure, the well comprising: a first casing string (12a), and a second casing string (12b) at least partially inside the first casing string thus defining a first inter-casing annulus therebetween. A primary fluid flow control device (16a), such as a wirelessly controllable valve, is provided in the second casing string (12b) to provide fluid communication between the first inter-casing annulus(14a) and a bore (14b) of the second casing string (12b). In the event of well "blow-out", a relief well (40) may be drilled and a fluid communication path formed between the relief well and the first casing string of the well rather than extend to lower and/or narrower sections of casing. A kill fluid can then be introduced via the relief well (40) and the primary fluid flow control device (16a) used to direct fluid to the second casing bore(14b). Further casing strings (12c) may be part of the well, and include corresponding flow control devices (16b), allowing the kill fluid to cascade down the well to control it. Accordingly, the time taken to drill a relief well to a shallower depth than is conventional can reduce the time and cost to control the well and can mitigate environmental impact of hydrocarbon loss caused by the blow-out.
(FR) L'invention concerne un procédé de régulation d'un puits dans une structure géologique, le puits comprenant : une première colonne de tubage (12a), et une seconde colonne de tubage (12b) au moins partiellement à l'intérieur de la première colonne de tubage définissant ainsi un premier espace annulaire inter-tube entre elles. Un dispositif de régulation d'écoulement de fluide primaire (16a), tel qu'une valve pouvant être commandée sans fil, est disposé dans la seconde colonne de tubage (12b) pour assurer une communication fluidique entre le premier espace annulaire inter-tube (14a) et un alésage (14b) de la seconde colonne de tubage (12b). En cas d'éruption de puits, un puits d'intervention (40) peut être foré et un trajet de communication fluidique formé entre le puits d'intervention et la première colonne de tubage du puits plutôt que de s'étendre vers des sections inférieures et/ou plus étroites du tube. Un fluide de neutralisation peut ensuite être introduit par l'intermédiaire du puits d'intervention (40) et du dispositif de régulation d'écoulement de fluide primaire (16a) utilisé pour diriger un fluide vers le second alésage de tube (14b). D'autres colonnes de tubage (12c) peuvent faire partie du puits, et comprendre des dispositifs de régulation d'écoulement correspondants (16b), permettant au fluide de neutralisation de s’écouler vers le bas du puits pour le réguler. Par conséquent, le temps nécessaire pour forer un puits d'intervention jusqu'à une profondeur moins profonde que dans les procédés classiques peut réduire le temps et le coût de régulation du puits et atténuer l'impact environnemental de la perte d'hydrocarbures provoquée par l'éruption.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)