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1. WO2021145861 - EVALUATING DRILL-IN FLUID PERFORMANCE IN A WELLBORE

Publication Number WO/2021/145861
Publication Date 22.07.2021
International Application No. PCT/US2020/013472
International Filing Date 14.01.2020
IPC
G01V 5/10 2006.1
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
E21B 49/00 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
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
G01N 23/00 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/-G01N17/178
E21B 21/08 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
21Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
08Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
E21B 47/00 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
47Survey of boreholes or wells
CPC
E21B 21/003
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
21Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
003Means for stopping loss of drilling fluid
E21B 47/11
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
47Survey of boreholes or wells
10Locating fluid leaks, intrusions or movements
11using tracers; using radioactivity
G01N 2223/0745
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2223Investigating materials by wave or particle radiation
07secondary emission
074activation analysis
0745neutron-gamma activation analysis
G01N 2223/637
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2223Investigating materials by wave or particle radiation
60Specific applications or type of materials
637liquid
G01N 23/22
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00G01N17/00, G01N21/00 or G01N22/00
22by measuring secondary emission from the material
G01N 23/222
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00G01N17/00, G01N21/00 or G01N22/00
22by measuring secondary emission from the material
221by activation analysis
222using neutron activation analysis [NAA]
Applicants
  • HALLIBURTON ENERGY SERVICES, INC. [US]/[US]
Inventors
  • NGUYEN, Philip D.
  • GUO, Weijun
  • DEVILLE, Jay Paul
Agents
  • GARDNER, Jason D.
  • SPARKMAN, William
Priority Data
16/742,02414.01.2020US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EVALUATING DRILL-IN FLUID PERFORMANCE IN A WELLBORE
(FR) ÉVALUATION DE LA PERFORMANCE D'UN FLUIDE DE FORAGE DANS UN PUITS DE FORAGE
Abstract
(EN)
A system includes a neutron source positionable within a wellbore to emit one or more neutrons toward a formation surrounding the wellbore. The system also includes a gamma ray detector positionable within the wellbore to detect gamma rays. Further, the system includes a gamma ray analyzer that can perform operations. The operations can include receiving data indicating detected gamma rays from the gamma ray detector. Additionally, the operations include determining, from the data indicating the detected gamma rays, an amount of activated tracer material present within the wellbore originating from non-radioactive tracer material of drill-in fluid. The operations also include determining, from the amount of activated tracer material, an amount of filtercake buildup in a wellbore, a depth of fluid-loss filtrate into the formation surrounding the wellbore, or a combination thereof.
(FR)
L'invention concerne un système comprenant une source de neutrons pouvant être positionnée à l'intérieur d'un puits de forage pour émettre un ou plusieurs neutrons vers une formation entourant le puits de forage. Le système comprend également un détecteur de rayons gamma pouvant être positionné dans le puits de forage pour détecter les rayons gamma. En outre, le système comprend un analyseur de rayons gamma qui peut effectuer des opérations. Les opérations peuvent comprendre la réception de données indiquant des rayons gamma détectés en provenance du détecteur de rayons gamma. En outre, les opérations comprennent la détermination, à partir des données montrant les rayons gamma détectés, d'une quantité de matériau traceur activé présent dans le puits de forage provenant d'un matériau traceur non radioactif du fluide de forage. Les opérations comprennent également la détermination, à partir de la quantité de matériau traceur activé, d'une quantité d'accumulation de gâteau de sédiments dans un puits de forage, d'une profondeur de filtrat de perte de fluide dans la formation entourant le puits de forage, ou d'une combinaison de ces éléments.
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