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1. WO2011007229 - METHOD AND APPARATUS FOR WELLBORE SURVEY USING INERTIAL SENSORS

Publication Number WO/2011/007229
Publication Date 20.01.2011
International Application No. PCT/IB2010/001671
International Filing Date 08.07.2010
IPC
G01C 21/16 2006.01
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
21Navigation; Navigational instruments not provided for in groups G01C1/-G01C19/104
10by using measurement of speed or acceleration
12executed aboard the object being navigated; Dead reckoning
16by integrating acceleration or speed, i.e. inertial navigation
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
CPC
E21B 47/022
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
G01C 21/16
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
21Navigation; Navigational instruments not provided for in preceding groups G01C1/00-G01C19/00
10by using measurements of speed or acceleration
12executed aboard the object being navigated; Dead reckoning
16by integrating acceleration or speed, i.e. inertial navigation
Applicants
  • SCHLUMBERGER TECHNOLOGY B.V. [NL]/[NL] (AL, AU, AZ, BG, CO, CZ, DE, DK, GQ, GR, HU, ID, IE, IL, IT, KR, KZ, LT, MX, NO, NZ, OM, PL, RO, RU, SI, SK, TM, TN, TR, TT, UA, UZ, ZA)
  • SERVICES PETROLIERS SCHLUMBERGER [FR]/[FR] (FR)
  • SCHLUMBERGER CANADA LIMITED [CA]/[CA] (CA)
  • SCHLUMBERGER HOLDINGS LIMITED (GB, JP, NL)
  • PRAD RESEARCH AND DEVELOPMENT LIMITED (AE, AG, AM, AO, AT, BA, BB, BE, BF, BH, BJ, BR, BW, BY, BZ, CF, CG, CH, CI, CL, CM, CN, CR, CU, CY, DM, DO, DZ, EC, EE, EG, ES, FI, GA, GD, GE, GH, GM, GN, GT, GW, HN, HR, IN, IS, KE, KG, KM, KN, KP, LA, LC, LK, LR, LS, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MY, MZ, NA, NE, NG, NI, PE, PG, PH, PT, RS, SC, SD, SE, SG, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TZ, UG, VC, VN, ZM, ZW)
  • SATO, Shigeru [JP]/[JP] (UsOnly)
  • IGARASHI, Juei [JP]/[JP] (UsOnly)
  • YAMATE, Tsutomu [JP]/[JP] (UsOnly)
  • WOODBURN, Charles [GB]/[FR] (UsOnly)
Inventors
  • SATO, Shigeru
  • IGARASHI, Juei
  • YAMATE, Tsutomu
  • WOODBURN, Charles
Agents
  • MATSUDA, Kiichiro
Priority Data
12/503,07515.07.2009US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR WELLBORE SURVEY USING INERTIAL SENSORS
(FR) PROCÉDÉ ET APPAREIL D'INSPECTION D'UN PUITS DE FORAGE À L'AIDE DE CAPTEURS INERTIELS
Abstract
(EN)
A sensor apparatus comprising a housing, two or three gyroscope units and three accelerometer units. The gyroscope units are oriented orthogonally respective to each other and mounted within the housing. Each gyroscope unit includes a plurality of gyroscopes with input axes parallel to each other. The accelerometer units are oriented orthogonally respective to each other and mounted within the housing. Each accelerometer unit includes a plurality of accelerometers with detection axes parallel to each other.
(FR)
L'invention porte sur un appareil de détection comprenant un logement, deux ou trois unités gyroscopiques et trois unités d'accéléromètre. Les unités gyroscopiques sont orientées orthogonalement l'une par rapport à l'autre et montées à l'intérieur du logement. Chaque unité gyroscopique comprend une pluralité de gyroscopes avec des axes d'entrée parallèles entre eux. Les unités d'accéléromètre sont orientées orthogonalement l'une par rapport à l'autre et montées à l'intérieur du logement. Chaque unité d'accéléromètre comprend une pluralité d'accéléromètres avec des axes de détection parallèles entre eux.
Also published as
GB1201538.4
Latest bibliographic data on file with the International Bureau