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1. WO2021046419 - SYSTEMS AND METHODS FOR SATURATION LOGGING OF HYDROCARBON WELLS

Publication Number WO/2021/046419
Publication Date 11.03.2021
International Application No. PCT/US2020/049503
International Filing Date 04.09.2020
IPC
G01V 11/00 2006.01
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/-G01V9/147
CPC
E21B 49/00
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
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 11/002
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
002Details, e.g. power supply systems for logging instruments, transmitting or recording data, specially adapted for well logging, also if the prospecting method is irrelevant
G01V 3/32
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
32operating with electron or nuclear magnetic resonance
G01V 5/10
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
5Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity
04specially adapted for well-logging
08using primary nuclear radiation sources or X-rays
10using neutron sources
G01V 9/005
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
9Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
005by thermal methods, e.g. after generation of heat by chemical reactions
Applicants
  • SAUDI ARABIAN OIL COMPANY [SA]/[SA]
  • ARAMCO SERVICES COMPANY [US]/[US] (AG)
Inventors
  • ELTAHER, Yahia, Ahmed
  • MA, Shouxiang, Mark
Agents
  • RHEBERGEN, Constance, Gall
Priority Data
16/561,14505.09.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEMS AND METHODS FOR SATURATION LOGGING OF HYDROCARBON WELLS
(FR) SYSTÈMES ET PROCÉDÉS DE DIAGRAPHIE DE SATURATION DE PUITS D'HYDROCARBURES
Abstract
(EN)
Provided are techniques for saturation logging a hydrocarbon we!l in a hydrocarbon reservoir. The techniques including conducting a pulsed neutron (PN) logging of the well to generate a carbon/oxygen (C/O) log, conducting a nuclear magnetic resonance (NMR) logging of the well to generate a viscosity log, conducting a temperature logging of the well to generate a temperature log, determining a relationship of oil API gravity to viscosity and temperature for the reservoir, determining an oil API gravity log for the well based on the viscosity log, the temperature log, and the relationship of oil API gravity to viscosity and temperature, determining, based on the oil API gravity log, an oil density log for the well, determining, based on the oil density log, an oil-carbon density log for the well, and determining, based on tire oil-carbon density log and the C/O log, a continuous oil saturation log for the well.
(FR)
L'invention concerne des techniques de diagraphie de saturation d'un puits d'hydrocarbures dans un réservoir d'hydrocarbures. Les techniques consistent à réaliser une diagraphie par neutrons pulsés (PN) du puits afin de générer une diagraphie carbone/oxygène (C/O), à réaliser une diagraphie par résonance magnétique nucléaire (RMN) du puits afin de générer une diagraphie de viscosité, à réaliser une diagraphie de température du puits afin de générer une diagraphie de température, à déterminer une relation de la densité API d'huile à la viscosité et à la température du réservoir, à déterminer une diagraphie de densité API d'huile du puits en fonction de la diagraphie de viscosité, de la diagraphie de température et de la relation de la densité API d'huile à la viscosité et à la température, à déterminer, en fonction de la diagraphie de densité API d'huile, une diagraphie de densité d'huile du puits, à déterminer, en fonction de la diagraphie de densité d'huile, une diagraphie de densité huile-carbone du puits, et à déterminer, en fonction de la diagraphie de densité huile-carbone et de la diagraphie C/O, une diagraphie de saturation en huile continue du puits.
Also published as
Latest bibliographic data on file with the International Bureau