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1. WO2014155126 - METHOD AND APPARATUS FOR SUBSEA WELL PLUG AND ABANDONMENT OPERATIONS

Publication Number WO/2014/155126
Publication Date 02.10.2014
International Application No. PCT/GB2014/050986
International Filing Date 27.03.2014
Chapter 2 Demand Filed 21.11.2014
IPC
E21B 21/00 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
21Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
E21B 21/01 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
21Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
01Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
E21B 21/08 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
21Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
08Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
CPC
E21B 21/001
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
21Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
001specially adapted for underwater drilling
E21B 21/01
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
21Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
01Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
E21B 21/08
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
21Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
08Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
E21B 33/0355
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
33Sealing or packing boreholes or wells
02Surface sealing or packing
03Well heads; Setting-up thereof
035specially adapted for underwater installations
0355Control systems, e.g. hydraulic, pneumatic, electric, acoustic, for submerged well heads
E21B 34/04
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
34Valve arrangements for boreholes or wells
02in well heads
04in underwater well heads
E21B 47/04
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
47Survey of boreholes or wells
04Measuring depth or liquid level
Applicants
  • IKM CLEANDRILL AS [NO]/[NO] (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BN, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CN, CO, CR, CU, CY, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IR, IS, IT, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, ZA, ZM, ZW)
  • HASLER, Thomas [GB]/[NO] (US)
Inventors
  • HUFTHAMMER, Harald
Agents
  • LINCOLN IP
  • LINCOLN, Matthew
Priority Data
2013043827.03.2013NO
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR SUBSEA WELL PLUG AND ABANDONMENT OPERATIONS
(FR) PROCÉDÉ ET APPAREIL POUR OBTURATEUR DE PUITS SOUS-MARIN ET OPÉRATIONS D'ABANDON
Abstract
(EN)
The invention provides a method and apparatus for performing a plug and abandonment operation on a subsea well. A wellhead interface module (20) is located on a wellhead (13), which accommodates a volume of wellbore fluid in fluid communication with the wellbore. A system control module (80) receives a signal from a sensor (27) in a chamber (23) of said wellhead interface module and is configured to derive volume data relating to a change in volume of wellbore fluid in the chamber and compares the derived volume data with a volume change expected due to the removal of tubing from the wellbore. In embodiments of the invention, this enables a change in wellbore conditions to be characterised, for example a fluid influx or a fluid loss, from the volume data. The method may comprise providing wellbore fluid to the chamber by means of a flow control package (40) to replace fluid which enters the wellbore to occupy the volume vacated by the tubing, and/or removing or adding fluid in fluid influx/ loss situations respectively.
(FR)
La présente invention concerne un procédé et un appareil pour effectuer des opérations d'obturation et d'abandon d'un puits sous-marin. Un module d'interface de tête de puits est situé sur une tête de puits et prend en charge un certain volume de fluides de puits de forage en communication fluidique avec le puits de forage. Un module de commande de système reçoit un signal d'un capteur situé dans la chambre et est conçu pour dériver les données de volume se rapportant à un changement de volume de fluides de puits de forage dans la chambre et compare les données de volume dérivées avec un changement de volume attendu du fait du retrait des tuyaux du puits de forage. Selon des modes de réalisation de l'invention, cela permet de caractériser un changement de conditions de puits de forage, par exemple un influx ou une perte de fluide, à partir des données de volume. Le procédé peut comprendre le fait d'alimenter l'appareil en fluide de forage pour remplacer le fluide qui pénètre le puits de forage afin d'occuper le volume auparavant occupé par les tuyaux et/ou de retirer ou d'ajouter du fluide lors de situations d'influx/de perte de fluide respectivement.
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