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1. WO2016174489 - DETERMINATION OF HORIZONTAL CONSTRAINTS IN SUBSOIL

Publication Number WO/2016/174489
Publication Date 03.11.2016
International Application No. PCT/IB2015/000853
International Filing Date 27.04.2015
IPC
E21B 49/00 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
49Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
G01V 99/00 2009.01
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
99Subject matter not provided for in other groups of this subclass
CPC
E21B 47/06
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
47Survey of boreholes or wells
06Measuring temperature or pressure
E21B 49/006
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
49Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
006Measuring wall stresses in the borehole
G01V 1/50
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
1Seismology; Seismic or acoustic prospecting or detecting
40specially adapted for well-logging
44using generators and receivers in the same well
48Processing data
50Analysing data
G01V 11/00
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
11Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
G01V 2210/624
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
2210Details of seismic processing or analysis
60Analysis
62Physical property of subsurface
624Reservoir parameters
G01V 2210/6242
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
2210Details of seismic processing or analysis
60Analysis
62Physical property of subsurface
624Reservoir parameters
6242Elastic parameters, e.g. Young, Lamé or Poisson
Applicants
  • TOTAL SA [FR]/[FR]
Inventors
  • ONAISI, Atef
  • SU, Kun
Agents
  • CABINET PLASSERAUD
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DETERMINATION OF HORIZONTAL CONSTRAINTS IN SUBSOIL
(FR) DÉTERMINATION DE CONTRAINTES HORIZONTALES DANS LE SOUS-SOL
Abstract
(EN)
The present invention relates to a method of determination of present-day horizontal stresses in geological formations, wherein the method comprises dividing (102) the received well data in a plurality of contiguous sets of data i, a set of data i being above a set of data i+1 and for each set of data i in the plurality of sets of data, determining, based on the set of data i, at least parameters (Pi, a pressure in subsoil corresponding to the set of data i, bi, a Biot coefficient corresponding to the set of data i, vi, a Poisson's ratio corresponding to the set of data i, Formula (a), a vertical constraints in subsoil corresponding to the set of data i, Ei a Young's modulus corresponding to the set of data i, ai, a thermal expansion coefficient, and Ti, a temperature in subsoil corresponding to the set of data i. The method further comprises, for each set of data i in the plurality of sets of data, computing and outputting the horizontal constraints Formula (I).
(FR)
L'invention concerne un procédé de détermination de contraintes horizontales actuelles dans des formations géologiques. Le procédé consiste à diviser (102) les données de puits reçues en une pluralité d'ensembles de données i contigus, un ensemble de données i étant au-dessus d'un ensemble de données i +1, et pour chaque ensemble de données i de la pluralité d'ensembles de données, et à déterminer, sur la base de l'ensemble de données i, au moins des paramètres (P i , une pression en sous-sol correspondant à l'ensemble de données i, b i , un coefficient de Biot correspondant à l'ensemble de données i, v i , un rapport de Poisson correspondant à l'ensemble de données i, (a), des contraintes verticales dans un sous-sol correspondant à l'ensemble de données i, E i , un module de Young correspondant à l'ensemble de données i, a i , un coefficient de dilatation thermique, et T i , et une température de sous-sol correspondant à l'ensemble de données i. Le procédé consiste également, pour chaque ensemble de données i de la pluralité d'ensembles de données i<<, à calculer et à délivrer en sortie les contraintes horizontales (I).
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