C.D. (SAM) JOHNSTON, Seismic Interpreter
Seismic Consulting Ltd.
Calgary, Alberta, Canada and Maracaibo, Venezuela (temp)
Phone: +1 778-426-4458, Fax: 1 250-655-1493, cell (temp) (+58)
Web Site: http://www.cuug.ab.ca/~johnstos/
Canadian citizen, married with three older children; born (U.K.) May 19, 1949
Sam Johnston is a Senior Professional Geophysicist with 34 years of
experience in Canadian and International Oil and Gas Exploration and
He has detailed experience with all seismic techniques, is
proficient with computer interpretation and modeling systems, and is
knowledgeable with all aspects of petroleum geology and business. Sam has
interpretation experience in all basin types, in all depositional
environments, and in all structural styles. He has lived and worked on
- B.Sc. Geological Engineering: Geophysics Option, University of
Saskatchewan, Canada 1972
- Company and Industry Courses covering all aspects of petroleum
geophysics, geology, and business management. Extensive technical
readings, study and consultations.
Countries of Work Experience
Canada (8 basins), United States (3 basins), Venezuela (2 basins), Colombia (3
basins), Ecuador, Peru (2 basins), Argentina (5 basins), Australia (2
basins), New Zealand, United Kingdom (2 basins), Norway (2 basins),
Gabon, Oman, India (4), Pakistan (2) and
Tunisia (3 basins). Many evaluations and "world wide basin/country
Oct. 1995-present JOHNSTON SEISMIC CONSULTING LTD. Calgary
- At the foundation of all our projects is the belief that
there is no substitute for honesty, integrity, commitment and an
focus to deliver quality service and effective and timely solutions.
- A private consulting practice, providing integrated seismic
interpretation service to the Oil and Gas Industry worldwide.
Working as a seismic interpretation and integration advisor on
integrated studies in the Maracaibo Basin, finished working on a
thrusted field evaluation in Eastern Venezuela,
finished a drilling locations project in the Maracaibo Basin, Venezuela,
block evaluations and bid rounds in India and Pakistan, finished a
Mahanidi deepwater basin analysis in India,
finished a Puerta la Cruz, Venezuela integrated field study. Finished a
series of Alberta and BC foothills (fold and thrust
belt) exploration and exploitation projects,
exploration/exploitation projects, completed
reservoir characterization project based in Maracabaibo, Venezuela.
Finished a west-central Alberta Cretaceous exploration project, completed
a Maracaibo Basin, Venezuela
project. Finished a
B.C. Cretaceous integrated pool evaluation, and a Colombian VSM project,
B.C. Keg River regional project, a coal
bed methane scoping project, a Wapiti/Deep Basin Alberta Cretaceous
and exploitation project, and finished a Tunisia evaluation. Completed a
Mackenzie Delta structural evaluation and an Alberta Cretaceous
gas storage pool evaluation/purchase; previously finished a 3D project in
Tunisia, a Brazil review and a B.C. Devonian project.
Two years ago, finished a Cooper Basin,
S. Australia integrated reservoir
completed a Putamyo Basin, Colombia project, a
Maracaibo Basin, Venezuela integrated reservoir
characterization study, and an Anticosti Island interpretation.
completed an East Coast Carboniferous evaluation and a
B.C. Slave Point Project, a 3-D
"integrated Landmark/geostatistical attribute analysis" interpretation of a
B.C. Cretaceous pool, an
eastern Canadian Cambro-Ordivician exploration project, B.C. projects in
the Keg River, Nahani, Slave Point, Jean
Marie, Doig, Gething horizontal wells, and Bluesky. Alberta projects were
in Keg River, Slave Point (integrated Landmark interpretation and 26
horizontal wells), Bakken, Triassic, Sawtooth and the Bluesky. N.W.T. land
evaluations. Previous international projects were in Maracaibo Basin,
bid round evaluation and bid, and N.W. Basin, Argentina.Tested a new
seismic structural modelling package.
July. 1985-Oct. 1995 NORCEN ENERGY RESOURCES LTD. Calgary
Nov. 1993-Oct. 1995 Staff Geophysicist: Canadian
Foothills,Frontiers & International
- Maracaibo Basin, Venezuela: Evaluated basin hydrocarbon habitat,
utilizing all geological reports and three existing seismic data sets (
4000km). Completed preliminary interpretation (3000 km) and
recommendation from both paper sections and Landmark system on the La
Ceiba and Catatumbo Exploration Bid Blocks.
- Alberta Foothills: Recommended successful land sale strategies,
prepared and shot a 'sparce' 3-D, firmed up prospects, recommended
locations, designed and shot two offset VSP's and recommended a
successful deviation. Recommended horizontal re-entries and new
locations over the Coleman pool, utilizing Landmark "grid-balancing" to
character tie varied, non-intersecting, foothills data sets.
- North West Territories: Assembled a digital culture, well, map and
in-house seismic data base, initiated an integrated basin/economic study,
and recommended a specific course of action.
- West Newfoundland: Completed processing Q.C. and interpretation of
the on-shore and off-shore data, recommended an onshore location in this
new transpressional/transtensional basin.
- Jeanne d'Arc Basin: Completed development economics/sale evaluation
of three pools.
- SE British Columbia Foothills: Full cycle exploration over an inner
foothill 'tough-terrain/surface carbonate' prospect crossing the
- NE British Columbia Foothills: Evaluated outer foothills (Nikanassin)
lands, inner foothills Debolt prospects, and Sukunka Triassic potential
on lands recommending five locations.
Nov. 1988-Nov. 1993 Exploration Coordinator: Foothills,
Frontier, Deep Devonian and
Geophysical Supervisor: Domestic Exploration
- Planned business strategy, tactics and budgeting, evaluated activity
and drilling locations. Coordinated and technically consulted on all
Canadian Exploration geophysical work.
- Plains: Completed many long-term and short-term 2-D and 3-D
interpretation projects, both as a "team member" and on a "as needed"
basis. Play types were Cretaceous clastic fluvial channels, Triassic
clastic pinch-outs and tidal channels, Permian clastic erosional outliers
and facies changes, Mississippian carbonate subcrops and fault closures,
many Devonian carbonate banks, platform edges and pinnacle reefs, and
basal clastic fault closures. Work varied from regional studies to pool
developments, over the the entire Western Canadian Sedimentary Basin.
- Foothills: Initiated structural and seismic modeling on selective
projects. Completed full cycle exploration on Montana sub Precambrian
karsted carbonates/volcanics play.
- North West Territories: Evaluated various farm-ins, and initiated
- Jeanne d'Arc Basin: Completed mapping and reserve distribution to
evaluate options on White Rose penalty dispute, Hebron development plans
and Terra Nova/Trinity reserves.
- Beaufort Sea: Mapped West Ukalerk structure and performed reserve
- Other Canadian Basins: Evaluated various farm-ins in Ontario, Nova
Scotia and Queen Charlotte Islands, and examined and aided all aspects of
West Newfoundland seismic and structural styles.
May 1987-Nov. 1988 Senior Technical Advisor:
- World wide basin analysis and technical evaluation: Generated a
business strategy, and recommended a dozen countries with long term
exploration opportunities. Completed reports.
- South America: Initiated Sub Andean basins evaluation with further
basic data acquisition and evaluation in Colombia, Ecuador, Peru, and
Argentina. Developed reports.
- Argentina: Initiated further data acquisition, 3rd Round seismic
interpretations and political risk analysis. Recommended establishing
Argentina as a long term core country.
July 1985-May 1987 District Geophysicist:N. Alberta, Northeast B.C &
2-D and 3-D seismic interpretation in on-going full cycle exploration plays.
- Canada: Plays were Triassic clastic channel-fills, Triassic carbonate
sub-crops with fault induced fractures, Mississipian thrusted traps,
Permian clastic erosional traps, Devonian fault induced hydrothermal
dolomites, Devonian porosity development on platform margins, Devonian
porosity developed on structural anomalies, and basal clastics with fault
- U.S.: Powder River Basin (Wyoming): Full cycle exploration for
Permian aolian strat traps.
Dec.1980-July 1985 DAVITT EXPLORATION CONSULTANTS (U.K.)
Oct. 1981-Aug. 1985 NORSK HYDRO a.s., Bergen, Norway -
- Started Hydro office and worked throughout the Northern Viking
Graben in five main areas. Hild Field evaluation (Operator): Drilled
three gas wells, shot five three-component VSPs. Completed structural
analysis and reserve evaluation for field development decision via 2-D
and 3-D interpretations. Presented five talks and co-authored two papers.
- 30/7 SE prospect evaluation (Operator): Special test acquisitions on
deep pool discovery.
- Frigg Field and satellites: Reinterpreted data for field
reunitization, to map gas/water contact movement, to determine
distribution of water break-through and for new field development.
Developed two Jurassic prospects.
- Oseberg Field (Operator): Drilled wells 4 & 5 as initial Hydro field
development geophysicist. Aided on short term specialized field
- Northern Viking Graben: Developed regional structural analysis within
June 1981-Oct.1981 NORSK HYDRO U.K., London -
Set up U.K. district office, completed 3-D interpretation to evaluate a
deep Jurassic block prospect and completed Sole Pitt regional seismic and
Dec.1980-June 1981 TOTAL CFP Tunis, Tunisia -
Completed four seismic interpretations to evaluate projects in diverse
and structurally complex areas that involved extensional and wrench
July 1978-Dec. 1980 GULF CANADA RESOURCES, Calgary -
- East Beaufort: Developed semi-regional interpretation and location
analyses for drilling.
- Gulf of Mexico: Completed on-board acquisition Q.C., processing and
- East Coast: Initiated test reprocessing for location risking and
optimization of acquisition.
- Jeanne d'Arc Basin/Outer Ridge: Completed regional reinterpretation
and location risking
- Offshore Gabon: Initiated geological data gathering and analysis and
completed seismic. interpretations to evaluate "post" and "pre salt"
blocks. Evaluated operators locations.
- Offshore Labrador: Generated leads, prospects: three gas wells were
Sept.1974-June 1978 Edmonton - Brisbane, Australia - Asia -
Completed PDAD at U. of Alberta, taught Physics/Math in Brisbane,
motorcycled from Indonesia, through Asia, to Europe, and across Canada
and taught Physics/ Math in Canada.
May 1972-Aug. 1974 MOBIL OIL CANADA, Calgary -
Northeast British Columbia/Southern N.W.T: Developed Devonian carbonate
stratigraphic and structural prospects. DHI (Direct Hydrocarbon
Indicator) company wide Project
May 1969-March 1970 NORTHERN GEOPHYSICAL, Calgary Line Truck
Seismic line crew: Completed seismic acquisition programs throughout Alberta.
Seismic Interpretation Systems: Landmark (SeisWorks, EarthCube,
SynTools, StratWorks, ZMap+, Rave, SigmaView),
Paradigm/SeisX&VoxelGeo, GeoFrame/IESX/GeoViz, MagicEarth/GeoProbe,
SeisLog+, SeisVision and WinPics
Seismic Processing Systems: Advance/Promax, "Gulf"
Mapping Systems: Z Map Plus, Autotrol/ProGeo, Petrosys/Petroseis,
GeoScout, Acumap, Surfer
Modelling Systems: GXT/GX2, GMA/LogM, GMA/Struct, Cogniseis/GeoSec,
EarthVision, ER Mapper, H.R./GeoStat/ISMap, Roxar/IRAP-RMS, Petrel
Office/Business Systems: most applications. Most network and internet
Operating Systems : Unix, Mac and Dos/Windows.
Northern Viking Graben Multi-Level Three Component Walkaway VSP's: A
Case History, First Break ,EAEG, 1986, with P. Dillon/H. Ahmed
The Hild Field: A Problematic Structural Complex, in Habitat of
Norwegian Oil and Gas Fields, Norwegian Petroleum Federation, 1986, with
SEG, CSEG, EAGE, APEGGA,
[Johnston Seismic Consulting Ltd.]
Johnston Seismic Consulting Ltd.:
http://www.cuug.ab.ca/~johnstos/ressum.html Nov. 2010