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Practical
Drillstem Test (DST) Interpretation Seminar for Engineers & Geologists
5
Day Workshop
Course Description
INSTRUCTOR:
Hugh W. Reid, P.Geol.
Who Should Attend
This five day practical
seminar is directed at exploration, engineering and drilling personnel
concerned with making operational decisions based on DST results or who
use DST data in general exploration/exploitation work. It is very useful
for geologists evaluating old wells with DSTs for land acquisition.
Course Format
-
Workshop approach
taken with class discussions of numerous field examples.
-
Participants
are encouraged to bring examples from their own work experience to
discuss.
-
Emphasis is placed
on practical application rather than theoretical derivations of computations.
Method of Instruction
Course is taught
with visual aids keyed to the course manual.
All material covered
in exact order presented in the course manual (slowly, clearly, and thoroughly).
This eliminates the need for note taking which allows students to concentrate
on lectures and discussions.
Manuals / Textbooks
Course manual contains
over 60 examples of DST charts that can be used for trouble shooting problem
DSTs later. It is a permanent reference source.
'Useful Cookbooks'
To avoid the problem
of attendees forgetting procedures taught at the course, all techniques
are given in cookbook format.
What Participants
Learn
The course is designed
to provide participants with information not normally encountered in routine
service company training seminars and to impart analytical and interpretive
skills gained by the instructor in over 25 years of experience.
By the end of the
course, students should be able to accomplish the following:
- diagnose damage,
depletion, and mechanical malfunctions, such as tool plugging
- determine permeability
and forecast the stable flow rate if the well is completed
- understand why
data from cores and logs often conflict with DST data
- make more sense
of DST results printed in PIX well cards and field reports
- make a decision
as to whether to complete or abandon a wildcat with only marginal DST
results
- appreciate where
recoveries of "oil cut mud" and gas rates of "TSTM"
may be significant from an exploration standpoint
- identify long
narrow reservoirs (such as channel sands) from DST pressure behaviour
- use DST pressures
regionally to define reservoir continuity and the presence of barriers
(ie. stratigraphic traps)
- design DSTs which
preserve secrecy where competitors control adjacent land blocks
- predict elevation
of gas/water contacts, downdip of new discovery wells (from pressure
data)
- estimate the time
until a well stabilizes
- fully understand
closed chamber DSTs
Comments from Past
Participants
The following comments
are taken from course critiques filled out by our students in previous
courses.
"My understanding
of DTSs has increased dramatically with this seminar. Would recommend
the course to any geoscientist, even if they have nominal contact with
DSTs"
R.R.
Powell, Geologist
Chevron, Denver, Colorado
"Informative
yet not too heavy!"
Julie
Ulan, Geologist
Mobil Oil, Calgary, Alberta
"Recommend this
course for all geologists, young and old. I knew nothing when I came in
and now I feel I have a very significant tool at my disposal"
T.C.
Gosney, Geologist
Mobil Oil, Denver, Colorado
"With the knowledge
gained from this course, I recognized upside potential of a gas zone from
a discouraging DST which flowed only 50 Mscf/D and recovered mud.
AFTER STIMULATION THE ZONE PRODUCED 3-4 MMscf/D!"
George
Magarian, Geologist
(ex Northrock Resources), Calgary
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