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1. WO2013101587 - MAGNETIC RANGING TOOL AND METHOD

Publication Number WO/2013/101587
Publication Date 04.07.2013
International Application No. PCT/US2012/070566
International Filing Date 19.12.2012
IPC
E21B 47/022 2012.1
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 10/00 2006.1
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
10Drill bits
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
G01V 3/08
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, deviation
08operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
G01V 3/28
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, 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
28using induction coils
Applicants
  • SCHLUMBERGER CANADA LIMITED [CA]/[CA] (CA)
  • SERVICES PETROLIERS SCHLUMBERGER [FR]/[FR] (FR)
  • SCHLUMBERGER HOLDINGS LIMITED [GB]/[GB] (GB, JP, NL)
  • SCHLUMBERGER TECHNOLOGY B.V. [NL]/[NL] (AL, AM, AT, AU, AZ, BF, BG, BJ, BN, BY, CF, CG, CH, CI, CL, CM, CO, CY, CZ, DE, DK, EG, GA, GE, GN, GQ, GR, GW, HR, HU, ID, IE, IL, IT, KE, KG, KP, KR, KZ, LT, MD, MG, ML, MR, MX, MY, NE, NO, NZ, OM, PL, QA, RO, RU, SI, SK, SN, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, ZA)
  • PRAD RESEARCH AND DEVELOPMENT LIMITED [GB]/[GB] (AE, AG, AO, BA, BB, BE, BF, BH, BJ, BR, BW, BZ, CF, CG, CI, CM, CN, CR, CU, DM, DO, DZ, EC, EE, ES, FI, GA, GD, GH, GM, GN, GQ, GT, GW, HN, IN, IS, KM, KN, LA, LC, LK, LR, LS, LU, LV, LY, MA, MC, MD, ME, MK, ML, MN, MR, MT, MW, MZ, NA, NE, NG, NI, PA, PE, PG, PH, PT, RS, RW, SC, SD, SE, SG, SL, SM, SN, ST, SV, SY, SZ, TD, TG, VC, VN, ZM, ZW)
  • SCHLUMBERGER TECHNOLOGY CORPORATION [US]/[US] (US)
Inventors
  • ZHANG, Jun
Agents
  • BALLEW, Kimberly D.
Priority Data
13/339,85629.12.2011US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) MAGNETIC RANGING TOOL AND METHOD
(FR) OUTIL TÉLÉMÉTRIQUE MAGNÉTIQUE ET PROCÉDÉ ASSOCIÉ
Abstract
(EN) A downhole magnetic ranging tool includes first and second axially spaced magnetic sources deployed in a downhole tool body. The first and second magnetic sources have magnetic moments that axially opposed one another. A magnetic field sensor is deployed axially between the first and second magnetic sources. The tool may be utilized, for example, in subterranean well twinning, well intercept, and well avoidance operations to obtain a separation distance and dip angle between a drilling well and a target well.
(FR) La présente invention concerne un outil télémétrique magnétique de fond de puits qui comprend des première et seconde sources magnétiques espacées axialement déployées dans un corps d'outil de fond de puits. Les première et seconde sources magnétiques possèdent des moments magnétiques qui sont axialement opposés. Un capteur de champ magnétique est déployé axialement entre les première et seconde sources magnétiques. L'outil peut être utilisé, par exemple, dans des opérations souterraines de jumelage de puits, d'interception de puits, et d'évitement de puits pour obtenir une distance de séparation et un angle d'inclinaison entre un puits de forage et un puits cible.
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