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1. WO2009014838 - ANTI-COLLISION METHOD FOR DRILLING WELLS

Publication Number WO/2009/014838
Publication Date 29.01.2009
International Application No. PCT/US2008/067976
International Filing Date 24.06.2008
IPC
E21B 47/022 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
47Survey of boreholes or wells
02Determining slope or direction
022of the borehole, e.g. using geomagnetism
E21B 47/024 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
47Survey of boreholes or wells
02Determining slope or direction
024of devices in the borehole
E21B 47/09 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
47Survey of boreholes or wells
09Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes
G01V 3/26 2006.01
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
18specially adapted for well-logging
26operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
CPC
E21B 47/0228
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
47Survey of boreholes or wells
02Determining slope or direction
022of the borehole, e.g. using geomagnetism
0228using electromagnetic energy or detectors therefor
Applicants
  • SCHLUMBERGER CANADA LIMITED [CA]/[CA] (CA)
  • SCHLUMBERGER TECHNOLOGY B.V. [NL]/[NL] (AL, AU, AZ, BG, CO, CZ, DE, DK, GR, HU, ID, IE, IL, IT, KZ, LT, MX, MY, NO, NZ, OM, PL, RO, RU, SI, SK, TM, TN, TR, TT, UA, UZ, ZA)
  • PRAD RESEARCH AND DEVELOPMENT LIMITED (AE, AG, AM, AO, AT, BA, BB, BE, BF, BH, BJ, BR, BW, BY, BZ, CF, CG, CH, CI, CM, CN, CR, CU, CY, DM, DO, DZ, EC, EE, EG, ES, FI, GA, GD, GE, GH, GM, GN, GQ, GT, GW, HN, HR, IN, IS, KE, KG, KM, KN, KP, KR, LA, LC, LK, LR, LS, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MZ, NA, NE, NG, NI, PG, PH, PT, RS, SC, SD, SE, SG, SL, SM, SN, SV, SY, SZ, TD, TG, TJ, TZ, UG, VC, VN, ZM, ZW)
  • SERVICES PETROLIERS SCHLUMBERGER [FR]/[FR] (FR)
  • SCHLUMBERGER HOLDINGS LIMITED (GB, JP, NL)
  • CLARK, Brian [US]/[US] (UsOnly)
  • PHILLIPS, Wayne, J. [US]/[US] (UsOnly)
  • POEDJONO, Benny [ID]/[US] (UsOnly)
Inventors
  • CLARK, Brian
  • PHILLIPS, Wayne, J.
  • POEDJONO, Benny
Agents
  • FLORES, Jonna
Priority Data
60/951,14520.07.2007US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ANTI-COLLISION METHOD FOR DRILLING WELLS
(FR) PROCÉDÉ ANTICOLLISION DESTINÉ À FORER DES PUITS
Abstract
(EN)
Methods for drilling a new well in a field having a plurality of existing cased wells using magnetic ranging while drilling are provided. In accordance with one embodiment, a method of drilling a new well in a field having an existing cased well includes drilling the new well using a bottom hole assembly (BHA) having a drill collar having by an insulated gap, generating a current on the BHA while drilling the new well, such that some of the current passes through a surrounding formation and travels along a casing of the existing cased well, measuring from the BHA a magnetic field caused by the current traveling along the casing of the existing cased well, and adjusting a trajectory of the BHA to avoid a collision between the new well and the existing cased well based on measurements of the magnetic field.
(FR)
L'invention concerne des procédés destinés à forer un nouveau puits dans un champ présentant une pluralité de puits tubes existants, en utilisant une mesure magnétique pendant le forage. Selon un mode de réalisation, un procédé de forage d'un nouveau puits dans un champ présentant un puits tube existant comprend les étapes consistant à forer le nouveau puits en utilisant un ensemble de fond de puits (BHA) présentant une masse-tige avec un intervalle isolé ; générer un courant sur le BHA tout en forant le nouveau puits, de sorte qu'une partie du courant passe à travers une formation environnante et voyage le long d'un tubage du puits tube existant ; mesurer, à partir du BHA, un champ magnétique causé par le passage du courant le long du tubage du puits tube existant ; et ajuster une trajectoire du BHA pour éviter une collision entre le nouveau puits et le puits tube existant, en se basant sur les mesures du champ magnétique.
Also published as
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