Method of determining rock compressive strength
Patent
·
OSTI ID:6931392
This patent describes a method of determining rock compressive strength of a subterranean formation penetrated by a wellbore. It comprises: obtaining a numerical model of a drill bit to be used to drill through the subterranean formation; obtaining an estimate of the rock ductility of the subterranean formation; measuring weight-on-bit (WOB) and bit rotational speed (RPM) as the drill bit drills through the subterranean formation; and determining the rock compressive strength of the subterranean formation from the numerical model of the drill bit, the estimate of rock ductility, and weight-on-bit (WOB) and bit rotational speed (RPM).
- Assignee:
- Amoco Corp., Chicago, IL
- Patent Number(s):
- A; US 4914591
- Application Number:
- PPN: US 7-173514A
- OSTI ID:
- 6931392
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:1842335
Related Subjects
02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
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03 NATURAL GAS
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36 MATERIALS SCIENCE
360603 -- Materials-- Properties
COMPRESSION STRENGTH
DRILL BITS
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
EXPLORATORY WELLS
GEOLOGIC DEPOSITS
GEOPHYSICS
MEASURING METHODS
MECHANICAL PROPERTIES
MECHANICS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
RESOURCES
ROCK DRILLING
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SOURCE ROCKS
WELLS
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
COMPRESSION STRENGTH
DRILL BITS
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
EXPLORATORY WELLS
GEOLOGIC DEPOSITS
GEOPHYSICS
MEASURING METHODS
MECHANICAL PROPERTIES
MECHANICS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
RESOURCES
ROCK DRILLING
ROCK MECHANICS
SOURCE ROCKS
WELLS