Gatt, Alasdair M

CIS Advisor in Western Oilfield Exploration and Production Technology.

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Name : Gatt, Alasdair MacGregor 
Profession : Consultant Petroleum Engineer (SPE) 
Oilfield Experience : 15 Years 
Member of SPE (1981 - 1995) 
E-MAIL : 100433.1660@Compuserve.com 

SYNOPSIS 

An 11 year career with BP Petroleum Development Limited, initially in Production
Technology Branch, at BP Dyce and then Enhanced Oil Recovery Branch. During the
latter was seconded to Reservoir Engineering to pursue reservoir simulation and
streamtube modeling studies on secondary and tertiary recovery. In BP UK Land
Operations Branch at Eakring, gained experience in; logging and log analysis,
well testing and pressure transient analysis, and was responsible for workovers
and completions, stimulation techniques including acidization and hydraulic
fracture treatments, fracture containment analysis, treatment design and post
treatment pressure analysis. Experienced and trained in sour well operations. 

Career development continued as a Consultant Petroleum Engineer which commenced
with an 8 month extended contract with Amoco (UK) Exploration, performing scale
prediction modeling and evaluating other reduced well productivity/matrix damage
mechanisms, remedial treatments and damage inhibition methods. Numerous
international contracts followed, in both hostile and friendly environments
covering a wide diversity of operational and project studies, including
production optimization and environmental impact control. 


Career History : 

1995 Kerr McGee Oil (UK) Ltd., London : Petroleum Engineer (Stimulation
Advisor).
1995 British Gas E&P Ltd, Reading, England. : Petroleum Engineer (Stimulation).
1994 Fina Petroleum Libya, Tripoli, Libya. : Petroleum Engineer (Well Test)
1994 Elf Enterprise Caledonia, Aberdeen, Scotland. : Project Engineer
(Production).
1994 ZhetybayQuest LLS, Aktau, Kazakhstan. CIS : Petroleum Engineer
(Stimulation)
1994 Texaco North Sea Limited, London/Aberdeen : Stimulation Engineer (Erskine
HPHT Project)
1994 International Petroleum Corp., Dubai. UAE. : Petroleum Engineer
(Varandey/Tundra, CIS JV).
1994 Bechtel (Environmental) Ltd., London/Aberdeen. : Environmental
Engineer(Romanian Project).
1993 International Petroleum Corp., Dubai. UAE. : Petroleum Engineer (Bukha
Field, Offshore Oman).
1993 Elf Enterprise Caledonia Ltd., Aberdeen. : Petroleum Engineer (Production
Technology).
1993 Bechtel (Environmental) Ltd., London/Romania. : Environmental
Engineer(Oilfield Operations).
1993 KCA Drilling Limited, Russia (Perm Region). : Petroleum
Engineer(Operations).
1993 Bechtel Environmental Limited, Romania (ICPT Cimpina). : Environmental
Engineer(Oilfield Operations).
1992 EPDS, Australia/Aberdeen. : Petroleum Engineer(Stimulation).
1992 Panoco Inc., Geneva/Central Russia (Nurlat & Almetyvisk). :
Operations/Completions Engineer.
1992 Alcorn Production Philippines, (Manila & South China Sea). : Operations
Engineer
1992 Rainbow Oil, London. : Operations Engineer/Prod Chem
1991-1992 Amoco UK Exploration Co, London. : Operations Engineer/Prod Chemist
1988 -1990 Open University 
1986 -1988 BP Petroleum Development Ltd : Petroleum Engineer(Production)
1984 -1986 BP Petroleum Development Ltd : Wellsite/Ops Petroleum Engineer
1982 -1984 BP Petroleum Development Ltd : Petroleum Engineer(EOR)

Work Experience : 

July-Sept	1995

Kerr McGee Oil (UK) Ltd.,
(Petroleum Engineer Stimulation)
Asset Development, London.

Advised on the optimum recovery technique to maximize additional oil recovery
from multi-layered strata, by increasing sweep efficiency and recoverable
reserves.

Oct 94-Feb 1995 

British Gas E&P Ltd, 
(Petroleum Engineer Stimulation). 
International Projects/Drilling, Reading, England. 

Designed and programmed (10 wells) the massive hydraulic fracturing of Abiod and
acid fracturing of R-1, formations in Miskar Field, offshore Tunisia. Brief
included SYMOPS and HAZOPS combined operations. Submitted procedures and well
clean-up guidelines, for radioactive tagged proppant/frac fluid backflow removal
and disposal, to negate environmental impact. Coordinated service company
requirements and equipment design layout on cantilever rig and platform.
Operational inputs to Safety case.

Sept 1994 

Fina Petroleum Libya, 
Petroleum Engineer (Well Test). 
Tripoli, Libya. 

Wellsite Engineer for testing phase of onshore appraisal well.

Aug 1994 

Elf Enterprise Caledonia Ltd, 
Petroleum Engineer (Production) 
Aberdeen. Scotland. 

Conducted a Wellhead Valve and SCSSV Leak Study to determine a valve testing
philosophy and submit a company field asset policy.

Jun-July 1994 

ZhetybayQuest LLS, 
Petroleum Engineer(Stimulation)/Prod Chem 
Aktau, Republic of Kazakhstan. CIS. 

Reviewed methods for production optimization of the Zhetybay Field in Mangyshlak
Trough of Kazakhstan. Several damage mechanisms were isolated. Performed
tendering exercise for the Stimulation Contract of Zhetybay. Arranged cores and
oil samples for flood and compatibility tests. Submitted recommendations.

Mar-May 1994 

Texaco North Sea Limited. 
Petroleum Engineer(Stimulation) 
London/Aberdeen. 

Conducted technical/operational feasibility study for hydraulic fracture
stimulation treatments on the HPHT Erskine Gas Condensate Field, in the Massive
sandstone. Reviewed operational, logistical and cost considerations and
developed operational philosophies. The study included in-depth assessment of
proppant backflow.

Jan-Feb 1994 

International Petroleum Corporation (IPC), 
Petroleum Engineer. 
IPC Headquarters, Jadaf, Dubai. UAE. 

Conducted an evaluation and assessment on the technical feasibility and cost and
economic viability of developing several structures in the Varandey area of
Northern Russia, Timan Pechora Basin, inside the arctic circle.

Dec-Jan 1994 

Bechtel (Environmental) Ltd., 
Environmental Engineer (Romanian Environmental Project). 
London/Rosehearty. 

Writing final draft report on the Romanian Petroleum Sector Environmental
Assessment on Oilfield Production and Drilling Operations for submission to the
World Bank and EBRD. The report collated all the field studies on environmental
impacts, remedial proposals to reduce these impacts and recommendations to
optimize production and increase operating efficiency.

Nov-Dec 1993 

International Petroleum Corporation (IPC), Dubai. UAE. 
Petroleum Engineer. 
Bukha Project Office, Dubai/ Jack-up Rig, Straits of Hormuz. 

Designed and programmed the stimulation and testing for the two wells in the
Bukha Field, a sub-sea completion and a tie-back, in the Strait of Hormuz
offshore Oman. The stimulation design included the selective acidization of the
Thamama and Mauddud, gas/condensate reservoirs.

Aug-Sept 1993 

Elf Enterprise Caledonia Ltd., Aberdeen, Scotland. 
Petroleum Engineer (Production Technology). 
Well 16Z, Saltire Field. 

Conducted a study on a problematic, inefficient sub-sea water injection well
with high rate potential. Study included appraisal of historical stimulation
treatments, pre and post stimulation history matching, water compatibility,
lithological, sedimentary and diagenetic clay/mineral analyses. Damage
mechanisms were determined and recommendations submitted to reverse created
damage and stimulate well to full potential. Placement methods were decided and
programme and recipes formulated. Final report submitted to Elf management.

July-Aug 1993 

Bechtel (Environmental) Ltd., London. 
Environmental Engineer(Oilfield Operations). 
Romania (Oilfields, country-side, Cimpina Research Institute). 

Development of the sector-wide, long-term environmental monitoring strategy.
Selected specific sampling locations from the impact evidence and coordinated
the joint Bechtel/ ICPT field team during the air, soil and water sampling
programme. Documented exact locations for future long-term ICPT sampling
programme.

Discussed the Romanian oilfield development strategy and well structure
philosophy with individual oilfield specialists from Petrom and ICPT. Submitted
recommendations to reduce oilfield environmental impact, to optimize production
and increase operating efficiency. Report submitted to World Bank.

May-June 1993 

KCA Drilling Limited. 
Petroleum Engineer(Operations). 
Russia, (CIS), Perm Region. 

Conducted a technical evaluation of the facilities, infrastructure, well and
reservoir status. This included present reservoir management philosophy,
remedial work, stimulation treatments and overall production audit. Submitted
technical report which assessed workover and recompletion feasibility and
production optimization.

Feb - Mar 1993 

Bechtel (Environmental) Ltd., London. 
Environmental Engineer (Oilfield Operations). 
Romanian Oilfields.
(Ploiesti,Buzau,Braila,,Bacau,Seblacu-de-bacau,Oradea,Arad,Timisoara,Pitesti,Bras
ov,Tirgu Mures,Moreni,etc) 

Carried out an environmental assessment study of the petroleum sector in Romania
for EBRD and World Bank. As part of a multi-disciplined team, advised on
drilling, production and enhanced oil recovery aspects and their environmental
impacts. Submitted remedial proposals to reduce these impacts.

Reviewed current oilfield technology and practices, recommended changes.

Nov 1992 

EPDS, Australia. 
Petroleum Engineer (Stimulation). 

Submitted a proposal and design for the hydraulic fracture stimulation of
thirteen wells in Vietnam(VietSovPetro) by EPDS. Study included surface and
downhole equipment requirements and consumables. Design was for massive
hydraulic fracture stimulation treatments.

Jun - Aug 1992 

Panoco Inc, Geneva. 
Operations Engineer. 
on loc Almetyevsk and Nurlat, Tatarstan, CIS. 

Conducted a workover and re-completion feasibility study on 35 wells for the
Blue Kama JV, in Tataria Central Russia. Reviewed, pipeline modernization,
sputnik pumping stations, early production systems, mobile workover rigs and
relay workover teams. Discussed with Tatneft Directorate alternative stimulation
methods ; hydraulic fracture stimulation, acidizing, surfactants, in-situ
combustion and horizontal completion. On WI discussed filtration and methods of
increasing sweep efficiency.

Mar - May 1992 

Alcorn Production Philippines. 
Operations Engineer. 
Hakuryu V (Semi-Sub), South China Sea/ Manila Office. Philippines. 

Witnessed and assessed the Well-Completion, Stimulation and Testing of sub-sea
wells in West Linapacan Field, west of Palawan. Assessment of operations
including ; management, team-work, safety, sour service techniques and technical
designs and application. Findings were presented to Chase Manhattan, London and
SBM, Monaco.

Feb -Mar 1992 

Rainbow Oil. 
Operations Engineer/Production Chemist. 
Production Projects Group, London. 

Assessed potential workover and recompletion of wells in North Varyogen Field,
West Siberia. Brief included productivity enhancement by evaluating matrix/well
damage mechanisms and remedial treatment options. Damage mechanisms evaluated
included; scale, mud invasion, fines, paraffin's and asphaltenes and
perma-frost.

Dec 1991-Feb 1992 

Amoco (UK) Exploration Company. 
Operations Engineer. 
Production Operations Engineering Group, London. 

Initiated and programmed produced water monitoring operation to determine WI
breakthrough, scale deposition occurrence and optimum inhibition re-treatment
criteria. Conducted tendering exercise and service company assessment and
selection.

Jun 1991-Dec 1991 

Amoco (UK) Exploration Company. 
Production Chemist. 
Production Operations Engineering Group, London. 

Conducted an evaluation study on reduced productivity damage mechanisms in
well/matrix and surface facilities. Study included the effects caused by ESP and
Gas-Lift on damage. Recommended remedial treatments to rectify and inhibition
treatments to control damage re-occurrence on North West Hutton, Montrose and
Arbroath Fields.

Study included: scale prediction modeling, reservoir composition, mineralogy and
diagenesis, decline analysis, history matching, acid/inhibitor type evaluation
and selection and treatment placement methods e.g., coiled tubing . Chemical
recipe formulated, treatments designed and programmed.

Results and recommendations submitted in bound reports and presentations given
to Amoco Management and operations engineers. Presentation also given to
Co-Venturers(JV).

PC computing software used during studies; Panoil/gas, Production Analyst,
Harvard Graphics, Freelance, Lotus 123, Professional Write, and Windows. 
IBM Mainframe packages; Profs/Officevision, Amoco Technical Computing, Share,
Scale Prediction Model and Hydraulic Fracture Model. 

Jun 1986-Aug1988 

BP Petroleum Development Limited. 
Petroleum Engineer(Production). 
UK Land Operations Headquarters, Eakring, Notts./ Lincolnshire. 

Responsible for land well workovers, completions, welltests and remedial
treatments, to maximize production potential on damaged and tight formations.
Designed, programmed and executed operations and treatments. Frequent use of
well simulation and classical pressure transient and type curve analyses.

Programmed and supervised DST and Production Well Tests on UK Land wells.
Included pre-test workover operation and completion/test string design. Test
data evaluation using pressure transient analysis from downhole and surface
readout gauges.
Responsible for well damage evaluation. Scale deposition removal /inhibition and
hydraulic fracture designs and implementation. Pre-frac containment analysis and
interpretation of post stimulation falloff and production test data. Provided
guidance to new Engineers on
theory, interpretation and onsite applications. Author of handbook on
stimulation techniques, treatment design and post-frac pressure analysis.

Programmed and executed coiled tubing artificial lift operations on dual
horizontal well and also polymer sealant operations to avert premature gas and
water breakthrough on fractured well.
Reviewed and tested innovative remedial treatments; seismic monitoring, HIT
tests, CFS and radial fracs.

Responsible for contractor slickline operations. Designed in-house fully
contained unimog, slickline unit and pressure monitoring skid for use during
stimulation operations and general reservoir pressure management.

Responsible for stimulation, slickline and memory gauge service company
contracts. Included technical and operational fitness assessment.

Jan 1984-Jun 1986 

Operational Petroleum Engineer. 
UK Land Operations Headquarters, BP Petroleum Dev Ltd.,Eakring,
Notts/Lincolnshire. 

BP Wellsite Representative during Exploration, Development and Production
operations. Prepared programs and procedures, analyzed data/results using
classical methods and submitted final reports. Initiated actions on the results.

Responsible for site supervision of electric wireline logging, cased and open
hole DST and Production testing. Log and welltest analysis/interpretation using
classical theory. Reports submitted.

Responsible for programming and executing a variety of stimulation treatments;
mini-fracs, propped fracs, polymer treatments, acid and scale dissolution and
inhibition in both sandstone and carbonate formations.

Programmed and executed perforating, water shut-off and plug and abandonment
operations.

May 1982-Jan1984 

Petroleum Engineer. 
Enhanced Oil Recovery Branch, BP Petroleum Development Ltd., Aberdeen. 

Seconded to Reservoir Engineering to pursue reservoir simulation and streamtube
modeling, applied to secondary and tertiary recovery on both onshore and
offshore fields.

Conducted reservoir simulation of Forties Field surfactant flood and Bothamsall
EOR surfactant project. History matching and both basic and complex data input
to build model.
Performed streamtube modeling to assess and quantify optimum chemical and
radio-active tracers for use on Forties Field and Bothamsall.

Responsible for data acquisition and analysis during pulse and interference
tests on Forties.

Jan 1981-May 1982 

Technical Assistant. 
Enhanced Oil Recovery Branch, BP Petroleum Development Ltd., Aberdeen. 

Conducted a study on temperature distribution in a reservoir subject to cold
seawater injection. 
Co-author of a paper on this subject, presented at the 2nd European Symposium on
EOR, in France. 
Reviewed Egmanton reservoir Central Crest area, data acquisition, mapping and
oil-in-place.

Organized and coordinated the road handling, air transportation and witnessed
the injection, of a radio-active tracer on Forties Field. Organized regular
sampling and analyses of breakthrough fluids.

Dec 1977-Jan 1981 

Technical Assistant. 
Production Technology Branch, BP Petroleum Development Ltd., Aberdeen. 

Responsible to group leader for data acquisition and analysis in trouble
shooting support group, dealing with field operational problems.

Seawater treatment and injection plant study. Assess filtration systems for
offshore use. Also filtration pod study- to find criteria for filter pod
replacement.

Forties Field and pipeline scale inhibitor trial and corrosion monitoring study.
Supervised CO2 tertiary recovery injection and back production pilot test at
Egmanton.

Aug 1977-Dec 1977 

Production Test Technician. 
Forties Field Offshore Production, BP Petroleum Development Ltd., (Aberdeen). 

Responsible to the production superintendent and field production engineer, for
daily sampling and analysis of produced fluids.


PROFESSIONAL AFFILIATION : Member of Society of Petroleum Engineers. 

PERSONAL INFORMATION 

Nationality : Scottish (Scotland/UK).
Date of Birth : 5th December 1943.
Marital Status : Married

PROFESSIONAL TRAINING : 

1977 Offshore Firefighting Tayside Fire Brigade
1977 Offshore Survival RGIT Aberdeen.
1978 Corrosion Eng & Oilfield Water Systems Petrotech (Patton)
1980 Basic Reservoir Engineering (OGCI).
1980 Reservoir Evaluation School Heriot Watt University
1981 Well Completions & Workovers (Rike).
1981 Waterflooding SPE (AIME)
1981 Well Testing (Separators) Flopetrol
1982/83 Computer Courses(Dec,IBM,Cray) BP In-House
1984 Formation Evaluation (OGCI).
1985 Reservoir Geology BP In-House
1985 Well Control & Blowout Prevention (DPT).
1985 Well Technology - Module 4 (HRDC).
1985 Principles of Well Testing (Bergeson)
1985 Reservoir Engineering Analysis (Bergeson)
1986 Hydraulic Fracturing (Nolte)
1988 Leadership Skills (Lea Storey & Co)

Educational Background : 

1980-1990 Open University BA Engineering Mechanics.
1975-1977 Aberdeen Technical College ONC in Chemistry (Distinction).
1973-1975 Aberdeen Technical College C&G Laboratory Technician Certificate (Pass
With Credit)
1970-1973 Buchan Technical College : Higher Mathematics ; 'O' Level: Chemistry,
English
1948-1958 Rosehearty Secondary School

ADDITIONAL INFORMATION 

Passport : Current British
Inoculations : Tetanus, Poliomyelitis, Typhoid, Cholera, Immunoglobulin
(Hepatitis A),Diphtheria. 
Address : 34-36 Union Street, Rosehearty. Aberdeenshire. Scotland. AB43 4JQ. 
Tel / Fax : (+44) - 1346 - 571225 (International) ; (01346) 571225 (UK Mainland)

E-MAIL : 100433.1660@COMPUSERVE.COM 




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