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Introduction
Abnormal Pressure Detection is a two-day short course
covering the causes of abnormal formation pressures and explaining "State of the
Art" methods for detecting them.
The detection methods include those that can be used in the planning stage
prior to drilling a well, as well as those that are used "real time" while the well is
drilling. Additional abnormal detection methods for doing a post mortem
evaluation of a well after it is drilled are also explained.
Some of the methods are qualitative in nature, primarily useful in
identifying the existence of abnormal pressures in a section of a well. Other
methods are quantitative allowing the determination of the magnitude of the
abnormal pressures.
What You Will Learn
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The sources of
abnormal formation pressures.
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The categories of
detection methods:
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The theoretical basis
for the models and methods used in abnormal pressure detection.
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How to calculate the
actual formation pressures for all of the quantitative detection methods.
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The practical
applications for office/planning and field/operations detection methods.
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A method for
determining which of the available detection methods best apply in any
situation.
What You Will
Take Away
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Working
knowledge of why abnormal pressures exist.
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The
ability to identify and obtain the information required for abnormal pressure detection.
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The
ability to determine whether abnormal pressures exist in a particular section of
a well.
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The
knowledge necessary to determine the magnitude of abnormal pressure.
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The
ability to use this knowledge to minimize kicks and to safely drill near
balance.
Who Should Attend
Assistant Drillers, Drillers, Tourpushers, Toolpushers, Drilling Foremen,
Drilling Superintendents, Technicians, Drilling Engineers, Mud Loggers, Mud
Engineers, and any service personnel involved in the drilling of an abnormally
pressured well.
Course Outline
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I. |
Formation
Pressure. |
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A. |
Normal
Pressure. |
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B. |
Subnormal
Pressure. |
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C. |
Abnormal
Pressure. |
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1. |
Artesian. |
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2. |
Intrusive
Action (Diapirs). |
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3. |
Uplift And
Erosion. |
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4. |
Psuedoplastic Formations. |
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5. |
Fluid
Density Differences. |
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6. |
Diagenesis
Of, And Rapid Deposition Of Shales |
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D. |
Critical
Characteristic. |
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1. |
Function Of
Shale Porosity. |
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2. |
Function Of
Rate Of Penetration. |
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a. |
Chip
Holddown Phenomena |
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II. |
Detection
Methods. |
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A. |
Qualitative
Methods. |
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1. |
Paleontological Methods. |
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a. |
Marker
Fauna. |
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b. |
Ecological
Zone Identification. |
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2. |
Temperature
Anomalies |
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3. |
Gas
Counting. |
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a. |
Background
Gas Units |
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b. |
Verification Procedures |
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4. |
Cuttings
Resistivity |
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5. |
Cuttings
Character And Hole Condition |
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B. |
Quantitative Methods. |
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1. |
Log
Analysis |
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a. |
Conventional Wireline |
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b. |
Measurement
While Drilling (MWD) |
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c. |
Logging
While Drilling (LWD) |
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d. |
Resistivity
Logs |
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1. |
Amplified
Short Normal |
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2. |
Amplified
Spherically Focused |
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3. |
Reciprocated Conductivity |
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e. |
Radioactive
Logs |
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1. |
Formation
Density Compensated |
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2. |
Neutron
Logs |
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f. |
Compensated
Sonic Log |
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2. |
Shale
Density |
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3. |
"d"
Exponent And Corrected "dc" Exponent |
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4. |
Normalized
Penetration Rate |
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5. |
Regression
Analysis ROP Model (Bourgoyne & Young ). |
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Date: |
In-House Schools
Only |
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