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1. (WO2018203063) IMPROVEMENTS IN OR RELATING TO WELL ABANDONMENT AND SLOT RECOVERY
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Pub. No.: WO/2018/203063 International Application No.: PCT/GB2018/051181
Publication Date: 08.11.2018 International Filing Date: 03.05.2018
IPC:
E21B 21/00 (2006.01) ,E21B 29/00 (2006.01) ,E21B 31/16 (2006.01) ,E21B 31/00 (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
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
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
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
31
Fishing for or freeing objects in boreholes or wells
12
Grappling tools, e.g. tongs or grabs
16
combined with cutting or destroying means
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
31
Fishing for or freeing objects in boreholes or wells
Applicants:
ARDYNE TECHNOLOGIES LIMITED [GB/GB]; 1 St Swithin Row Aberdeen Aberdeenshire AB10 6DL, GB
Inventors:
FAIRWEATHER, Alan; GB
Agent:
IPENTUS LIMITED; The Old Manse Wilsontown, By Forth Lanark Strathclyde ML11 8EP, GB
Priority Data:
1707131.704.05.2017GB
1707135.804.05.2017GB
Title (EN) IMPROVEMENTS IN OR RELATING TO WELL ABANDONMENT AND SLOT RECOVERY
(FR) AMÉLIORATIONS APPORTÉES OU SE RAPPORTANT À L'ABANDON DE PUITS ET À LA RÉCUPÉRATION DE FENTES
Abstract:
(EN) A method and apparatus for single-trip casing cutting and pulling for well abandonment and slot recovery. Perforations (28) are made in the casing (12) at a maximum depth using a punch tool (18) and a pulsed fluid circulated through the perforations (28) to determine a return at surface. In the event of a return at surface being detected, the casing (12) is cut and then pulled with assisted vibratory action. When no return is detected, perforations (28) are made at increasingly shallower depths until a return is detected and the casing (12) is then cut and pulled. This ensures the maximum length of casing (12) is cut and pulled on a single trip in the well bore.
(FR) L'invention concerne un procédé et un appareil de découpe et de tirage de cuvelage en une seule manœuvre pour l'abandon de puits et la récupération de fente. Des perforations (28) sont réalisées dans le boîtier (12) à une profondeur maximale en utilisant un outil de perforation (18) et du fluide pulsé est mis à circuler à travers les perforations (28) pour déterminer un retour en surface. En cas de détection d'un retour en surface, le cuvelage (12) est découpé et tiré avec l'assistance d'une action vibratoire. Lorsqu'aucun retour n'est détecté, des perforations (28) sont effectuées à des profondeurs de plus en plus profondes jusqu'à ce qu'un retour soit détecté et le cuvelage (12) est ensuite découpé et tiré. Ceci garantit que la longueur maximale du cuvelage (12) est découpée et tirée en une seule manœuvre dans le puits de forage.
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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)