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OFFSHORE
TECHNOLOGY
CONFERENCE
6-9 May 1996
Houston, Texas U.S.A.
Proceedings
Volume 2
Platform & Marine
System Design
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•fBL-016-7B«73 - Fax: 015 - 78133828th ANNUAL
OFFSHORE TECHNOLOGY
CONFERENCE
1996
PROCEEDINGS
VOLUME 2
1996 O F F S H O R E T E C H N O L O G Y C O N F E R E N C E
P O L I C Y GOVERNING PUBLICATION O F PAPERS
PRESENTED AT T H E OFFSHORE T E C H N O L O G Y C O N F E R E N C E
The papers included in the four Proceedings for the 28th Annual Offshore Technology Conference will not be pub-lished in any other form. The sponsor organizations for the 1996 O T C are listed under the copyright statement be-low. No publication of papers presented at the 28th Annual Offshore Technology Conference is authorized without the express written permission of the Board of Directors for the Conference. Permission to copy is restricted to an abstract of not more than 300 words. Illustrations may not be copied. Such use of an abstract should contain con-spicuous acknowledgment of where and by whom Ihe paper was presented.
Questions relating to publication of papers by individuals or organizations other than the sponsor organizations should be directed to Technology Transfer. Offshore Technology Conference. P O . Box 833868. Richardson, T X 75083-3868. U.S.A., or 222 Palisades Creek Drive. Richardson. T X 75080. U.S.A.
© C o p y r i g h t 1996
O F F S H O R E T E C H N O L O G Y C O N F E R E N C E on behalfofthe American Institute ofMining. Metallurgical, and Petroleum Engineers (Society of Petroleum Engineers, Society for Mining, Metallurgy, and Exploration. The Min-erals, Metals, and Materials Society), The American Association of Petroleum Geologists, The American Institute of Chemical Engineers. The American Society of Civil Engineers. The American Society of Mechanical Engi-neers—Petroleum Division. The Institute of Electrical and Electronics Engineers—Oceanic Engineering Society. The Marine Technology Society, The Society of Exploration Geophysicists, and The Society of Naval Architects and Marine Engineers.
PROGRAM COMMITTEE
Rick T. Hill, Chairman Oceaneenng Production Systems Houston, T X
Amis Judzis, Vice Chairman BP Exploration (Alaska) Inc. Anchorage, A K
Claudia Ludwig ( A A P G ) Consultant
Houston, T X
George Montgomery I V ( A I C h E ) Delta Hudson Engineering Corp. Houston, T X
Bill Luyties ( A S C E ) Shell Offshore Inc. Houston, T X Mike Williams ( A S M E ) F M C Corp. Houston, T X John Chauffe ( I E E E ) Cameron Houston. T X Doug Devoy ( M T S ) Matthews-Daniel C o . Houston, T X E . O . (Woody) Nestvold ( S E G ) Petroleum Industry. IBM Houston, T X
Mike Cruickshank (SME) U . of Hawaii
Honolulu. HI
David Lorenz ( S N A M E ) Noble. Denton, & Assocs. Houston, T X
Pat Rickey (SPE)
Exxon Production Research Houston, T X
Joe Pope (TMS) Ruor Daniel Inc. Sugar Land, T X
T H E O F F S H O R E T E C H N O L O G Y C O N F E R E N C E is the world's largest and most comprehensive technical conference and ex-hibition on offshore resource development. The Conference is jointly sponsored by eleven major international engineering and .scientific organizations that have a total membership of some 700,000 professionals.
The O T C technical program combines the expertise offered by the eleven engineering and scientific organizations. Authors from 16 nations will present practical applications, theor>', and research findings on all facets of ocean resource development in the 1996 program. The papers have been placed in 48 sessions covering both state-of-the-art and new technology in every area of offshore resource development.
The 4 Proceedings volumes have been separated by major areas of interest, with sessions included in each volume listed below. Papers are listed by O T C number, and most are in numerical order
VOLUME I
V O L U M E 3
Geology, E^rth Sciences & Environmental
Factors
Advancements in Piled Foundation Analysis and Design I Advancements in Piled Fotaidation Analysis and Design II Impact of Salt on Exploration
Impact of 3D Seismic on Resermir Characterization I Impact of 3D Seismic on Reservoir Characterization II Integration of Geophysical Measurements for Geological
Interpretation
Marine Diamonds—Everybody's Best Friend Mudslide Platform Development at SP47 Optimization of 3D Seismic Surx'eys
Seabed Gas Hydrates, Acoustics atid Minerals Seabed Reconnaissance
3D Seismic and Other Exploration-Based Technologies for Geohazards Assessment I
3D Seismic and Other Exploration-Based Technologies for Geohazards Assessment II
VOLUME 2
Platform & Marine System Design
Advances in Subsea Technology Offshore Brazil Development of International Standards for Design of
Offsltore Platforms to Resist Earthquakes Floating Production—Design and Conversion Floating Production Technology
Floating Production Units Heidrim Field Development I Heidrun Field Development II Loading of Offshore Structures Mudslide Platform Development at SP47 Project Management
Risk AssessmeiU
Safety & Environmental Quality
Structural Design and Platform Reassessment The Atlantic Frontier: An Over\-iew
The Atlantic Frontier: Foinaven Field Development
Construction & Installation
Gidfof Mexico Developments: Popeye and SeaStar Materials. Utilization and Fabrication
Mooring and Station Keeping Offshore Pipelines
Platform Installation
V O L U M E 4
Field Drilling & Development Systems
A Small Operator Implements Subsea Technology Control System Utnbilicals, Components and
ROV Interfacing
Deepstar—Results and Plans
Deepwater Subsea Manifold Systems Drilling Technology
Limit State Design Criteria for Pipelines LiuHua Project I
LiuHua Project II
Mobile Offshore Drilling Units Offshore Coiled Tubing Operations Oman-India Gas Pipeline
Paraffin and Hydrate Control
Pompano—A Deepwater Subsea Development Severe Operating Conditions
Subsea Production Systems Well Completions Technology
CONTENTS
Volume 2
O T C 8030 The Atlantic Frontier—An hitroduction 11
T.B. Fyfe. BP Exploration, and PL Osborne. Shell U.K.
O T C 8031 Technical Challenges of Opening the Atlantic Frontier 21
l.G. Bull, Shell U.K., and D.A. Brookes. BP E.xploraiion
O T C 8032 Why FPSOs for The Atlantic Frontier 31
R.C. Kenison and CV. Hunt. BP E.xploraiion
O T C 8033 The Foinaven and Schiehallion Developments 41
J. Leghorn. D.A. Brookes, M.G. Shearman, BP Exploration
O T C 8034 Planing and Development of South Pass Block 47 Drilling and
Production Platform 57
J.E. Brokmeyer. Energy Development Corp.
O T C 8035 Evaluation of the Reliability of a Conventional Platform Installed in South Pass
Block 47 of the Mississippi River Delta 59
R.G. Bea. U. of California
O T C 8036 Design of a Conventional Platform for the South Pass Block 47 of the
Mississippi RiverDelta 71
LD. Dannerand M.C. Kreinsen. Paragon Engineering Services Inc.
O T C 8037 QuantitativeandQuaHtativeRisk Analyses—The Safety ofOffshore Platforms 79
R.G. Bea, U. of California
O T C 8038 Use of Decision Risk Analysis in Selecting Field Development Options
A Case Study: Alba Field Phase II 93
S. Ahmed and S.J. Murphy Chevron U.K.
O T C 8040 Subsea Pipeline Operational Risk Management 99
R.L. Bell and G.A. Lanan. Intec Engineering Inc.
O T C 8041 Risk Assessment of a Deep Sea Pipeline 105
G.R. Egan. Aptech Engineering Services Inc.; Stanley Kaplan, Bayesian Assocs.; E.L. Zebroski, Aptech Engineering Serx'ices Inc.
O T C 8042 Targeted Subsea Inspection of Offshore Structures Based on
Risk and Criticality 114
B. Descampsand K.J. Woolley Quest Consulting Ltd.. and M.J. Baker, U. of Aberdeen
O T C 8044 A Cost Effective Newbuild Semisubmersible Floating Production Platform 121
Richard D'Souza. Alan Cordy. and Tom Bauer. Aker Omega Inc.
O T C 8045 The 3 Column T L P — A Cost Efficient Deepwater Production
and DrilUng Platform 137
Jan Muren and Per Flugstad, Aker Engineering a.s.. and Bill Grcincr. Richard D'Souza, and I.e. Solberg. Aker Omega Inc.
O T C 8046 A Small Tension Leg Platform for Marginal Deepwater Fields 149
W.L Hudjson. Doris Engineering, and J.C Vasseur, Foramer
O T C 8047 Concrete FPSO 159
R.J.S. Harris and L. des Deserts, Doris Engineering; R. Kenison and R. Snell, BP E.xploraiion Operating Co.; andD. Kerr, Sir Robert McAlpine
O T C 8048 Structural Life Extension of a Twenty Year Old Semisubmersible Drilling Unit
Converted for Floating Production Service 171
Raj Patel. Dave Barton. Richard D'Souza. Tom Smitli, cmd 0yvind Nilsen, Aker Omega Inc.
O T C 8049 Structural Integrity Guarantee of Semi-Submersibles Converted to Production 183
CCD. Henriques, Petrobrds S.A.
O T C 8050 A Semisubmersible Type Drilling, Early Production and Testing System
With 100,000 bbl Storage for Deepwater 195
Masahiro Nakamura and Kozo Yokokura, Japan Drilling Co., andAraia Nakamura. Japan Natl. Oil Corp.
O T C 8051 Foinaven: A Basis of Design for Development Wells 207
D. Howes, BP Exploration; M.J. Cropper. DDPS; and G.J. Prise, EGIS
O T C 8052 Petrojarl Foinaven: A West of Shetland Challenge 219
R. Borresen and H. Krafft, Golar-Nor Offshore A/S
O T C 8053 The Design and Installation of Dynamic Risers and Umbilicals for
the Atlantic Frontiers 227
P.J. Benstead and E Moore, Coflexip Stena Ojfsiiore Ltd.. and P.T. Holen and K.I. Ekeberg, Alcatel Kabel Norge AS
O T C 8054 Foinaven Subsea System Connection 235
J. White. C. Moore, and P. Sen. Eiiel Subsea Engineering
O T C 8055 Foinaven Subsea Control System: Fast Track Management and Control ^ . . . . 247
M. Cameron, GEC Marconi Oil and Gas Group
O T C 8056 Foinaven Fast Track Flowlines 257
L.H. Taylor and J. Mair, McDermoti Subsea Constructors Ltd. and Subsea Offshore Ltd.
O T C 8058 Electrical Transmission System With Variable Frequency Through
Long Length Cable 271
J.C. Oliveira. U. Federal de UberUmdia; R.J. Paulsen and M.A. Amaral, Petrobras; and D.A. Andrade and S.C.N. Araujo. U. Federal De Uberlandia
O T C 8059 Hydrodynamic Studies in a Cyclonic Separator 281
FA. Franga, E.S. Rosa. A.C. Bannwari. and LE Moura. UNICAMP, and EJ. Alhanaii, Petrobrds
O T C 8060 Subsea Separation Systems 291
P.R. Pagot, M. Wemeck, S. Assayag, M.B. Cerqueira, and M.A.N. Herdeiro, Petrobrds
O T C 8061 The Development of a Subsea Power Transmission System for Deep Water
Boosting Applications 301
CA. Godinho, Pirelli Cabos S.A.; L.A. Campagnac, Siemens S.A.; A. Nicholson, Tronic Electronics Services Ltd.; and W.M. Magalhaes, Petrobrds
O T C 8062 New Design of a Guidelineless Horizontal Tree for Deepwater E S P Wells 309
LA. Olijnik, Sade Vigesa. M.T.R. Paula. M.W. de Figueiredo, Petrobrds, and H. W. Rutherford, Cameron
O T C 8063 The Impact of Subsea Boosting on Deepwater Field Development 317
O.J.S. Ribeiro, R.M.T. Camargo, and C.A.S. Paido, Petrobrds
O T C 8064 The Validity of Morison Equation Extensions 331
M. Shafiee-far. W.W. Massie, andJ.H. Vugts, Delfl U. of Technology
O T C 8065 Model Test of Wave Forces on a Structurally Dense Jacket Platform 341
G . Z Gu, M.A. Parsley. E.R Berek. J.J. Calvo, R.C. Johnson. and D.J. Petruska, Mobil Technology Co.
O T C 8067 Wave-Current Loading on a Shallow Water Caisson 349
D.L Kriebel. U.S. Naval Academy; E.R Berek. Mobil Teclmology Co.; S.K. Chakrabarti. Chicago Bridge & Iron Technical Services Corp.; and J.K. Waters. U.S. Naval Academy
O T C 8069 Steel Catenary Riser for the Marlim Field EPS P-XVIII 359
O.B. SertaandM.M. Mouretle. Petrobrds S.A.; F.W. Grealish. MCS Intl.; S.J. Harbcrt and LEA. Souza, Oil Slates Industries
O T C 8070 Experimental Investigation of Deep Sea Riser Interaction 367
Erling Huse. MARINTEK (Norwegian Marine Technology Research Institute)
O T C 8071 Operational Experience of FPSO UisgeGorm 373
O. van Voorst, Bluewater Engineering B. V.
O T C 8072 Marine Installation of FPSOs 379
B.G.J. Kok and D. Laming, Smit Maritime Contractors BV
O T C 8073 The Influence of the Bow Shape of FPSOs on Drift Forces and Green Water 389
B. Buchner, Maritime Research Inst. Netherlands
O T C 8074 Managing Design and Construction of the Central North Sea FPSO 401
P. van Berkel, Single Buoy Moorings Inc.
O T C 8075 The Effect of Ship Motions on FPSO Topsides Design 411
P. J.M. Lapidaire and RJ. de Leeuw. Stork Proiech B.V 6
O T C 8076 FPSO's and Installation Contracting: A Concept for Deep Water Development 421
J. Schippers. M.A. Ripping, and F.C. Lange
O T C 8077 Development of Bias in Analytical Predictions Based on Behavior of Platforms
During Hurricanes 433
R.K. Aggarwal and O.K. Dolan, PMB Engineering Inc., and CA. Cornell, CAC Co.
O T C 8078 Development of Pile Foundation Bias Factors Using Observed Behavior of
Platforms During Hurricane Andrew 445
R.K. Aggarwal and R.W. Litton, PMB Engineering Inc.; CA. Cornell. CAC Co.; W.H. Tang, Hong Kong U. of Science & Technology; J.H. Chen. Chevron Petroleum Technology Co.; and J.D. Murff. E.x.xon Production Research Co.
O T C 8079 Background to New Design Manual for Platform Strengthening,
Modification and Repair 457
A.F. Dier. MSL Engineering Ltd.
O T C 8080 New Data on the Fatigue and Ultimate Limit State of Grouted Tubular Joints 467
D.J. Morahan. MSL Engineering Ltd.; R.J. van Foeken, TNO Building and Construction Research; M. Lidani, MSL Engineering Ltd.; and J. Wardenier. Delft U. of Technology
O T C 8081 A Procedure for Predicting the Fatigue Damage of Structural Members
in Unsteady Winds 473
J.K. Vandiver, M.I.T.; C-Y. Fei. Lehman Brothers; R.B. Campbell. Ex.xon Production Research; and Daidel Rudgc. Shell U.K. E&P
O T C 8082 The Effect of Dynamic Rebound on the Design of Fixed Offshore Staictures
Using API Directional Wave Criteria 485
A. S. Bangs. Hudson Engineeriixg Corp.; D.G. Morrison. Shell E&P Technology Co.; and PL Dorgant, Shell Offshore Inc.
O T C 8084 The Heidrun Field—Development Overview 495
J.L. Mitclta Jr., CE. Morrison, and J.G. de Oliveira, Conoco Inc.
O T C 8085 The Heidrun Field—Challenges in Reservoir Development and Production 521
B. E. Reid, Conoco, and LA. Hpyland, S.R. Olsen, and O. Petlerson, Statoil
O T C 8086 The Heidrun Field—Pre-Drilling: A Case Study in Designing for and
Achieving Success 535
D. B. Deont, J.C Eggemeyer, EE. Estep, and D.M. Hejnal, Conoco Nortvay Inc.
O T C 8087 Heidrun—Results from Pre-Completed Wells Using Innovative
Gravelpacking Techniques 549
W.R. Landrum, R.C, Burton, und W.M. MacKinlay, Conoco Inc., and A. Erlandsen and A. Vigen, Statod A/S
O T C 8088 Heidrun T L P Titanium Drilling Riser System 559
C. W. Sauer, J.B. Se.xton, R.E. Sokoll, and J.M. Thornton, Conoco Norway Inc.
O T C 8089 The Concerns and Benefits of Standardization on the Heidrun Subsea Water
Injection System 583
R.R. PughandR.D. Turner, Conoco Inc.
O T C 8091 Best Intentions: Lessons Learned on International Partnering and
Alliance Contracts 589
Susan Farrell, J. Ray McDermoti, S.A.; Alastair Ramsay. McDermott Marine Construction Ltd.; and Jerry Watzke. Tulane U.
O T C 8093 Management of the Ekofisk Cessation Project (ECP) 601
Jotiny Gabrielsen. Phillips Petroleion Co. Norway
O T C 8094 An Innovative Fast-Track Development for Cote dTvoire 617
G.J. Kreiderand J.E. Barnes, Paragon Engineering Ser\'ices Inc., and J.E. Smilherman and J.M. McFarland, UMC Petroleum Corp.
O T C 8095 Strategies for Cost Effective Solutions in Deep Water Production 629
E. Karrerand W.G. Vic ter, Petrobras S,A.
O T C 8096 Fast Response System for Large-Volume Acid Stimulation 635
O T C 8098 The Heidrun Field: T L P Global Performance and Hydrodynamics 645
R.B. Matten. Conoco (U.K.) Ltd.; K.C. Str0msen. Robit; J. Lassabliere, Det Norske Veritas AS; and H. Vogel, Aker Engineering a.s.
O T C 8099 The Heidrun Field: Global Structural Design and Analysis of the Heidrun T L P 665
ER. Botros, T.J. Wilson, and CM. Jolinson. Conoco Inc.
O T C 8100 The Heidrun Field—Heidrun T L P Tether System 677
M.R. Homung and S. Y. Hanna. Conoco Inc., and H. Hannus and D. Rowan. Norwegian Contractors
O T C 8101 The Heidrun Field—Marine Operations 689
D.M. Milter, Conoco Inc.; I. Frazer, Conoco (U.K.) Ltd.; and P. Brevig, Statoil
O T C 8102 The Heidrun Field: Oil Offtake Systems 721
F.D. Rajabi, Conoco Inc.; K. Brevik, Statod; and K. Syvertsen, APL
O T C 8103 Risk Assessment and Safety Assurance Program for the Heidrun Field 733
D. I. Karsan and CG. Ross, Conoco Norway Itic, and Conrad Eck-Olsen, Dovre Safetec
O T C 8104 Overview & Interfaces: International Standards Organization Design Guidelines
for Platforms to Resist Earthquakes 745
M.J.K. Craig, Unocal Corp.
O T C 8105 Seismic Exposure and Site Response Characteristics for Offshore
Platform Design 757
C.B. Crouse, Dames & Moore Inc.
O T C 8106 Probability Based Earthquake Load & Resistance Factor Design Criteria
for Offshore Platforms 763
Robert Bea, U. of California
O T C 8107 Structural Design Considerations 781
Peter Marshall, Moonshine Hill Proprietary, and Ben Chang, Hudson Engineering Corp.
O T C 8109 Region and Site Specific Design Guidelines for the Northeastern
Venezuela Development 795
E. Gajardo andM. Paga. Intevep S.A., and J.P. Sully. Geohidra Consultores CA.
O T C 8110 Response of a Steel-Jacket Platform Subject to Measured Seismic
Ground Motions 803
CE. Smith. U.S. Dept. ofthe Interior
O T C 8111 US Voluntary Semp Initiative: Holy Grail or Poisoned Chalice? 821
T.A.F. Powell. U.K. Health & Safety Executive
O T C 8112 Operating Procedures—Preliminary Results of a Safety Environmental
Management Program (SEMP) Case Study Sponsored by the D O E and MMS 835
R.A. Breslerand O.D. Tibbets, Paragon Engineering Services Inc., and G.W. Von Aniz, Taylor Energy Co.
O T C 8113 DP-PS: A Safety Program for DP Operations 843
André Cordeiro, Roberto Paschoalin, and Evandro Fartes, Petrobrds
O T C 8115 Applied Research Reduces Air Pollution From Platforms in Offshore
California Waters 851
A. Konczvald and G.C. Shacked, U.S. Dept. of Interior
O T C 8117 Typhoon Emergency Response Planning for the South China Sea 855
E.N. Corona, Arco E&P Technology; R.D. Lynch and D. Riffe, Arco China Inc.; V.J. Cardone and A. Co.x. Oceanweather Inc.; and H. Chen. Ocean Systems Inc.
O T C 8257 Smedvig Production Unit 380—A New Concept 869
Arnfmn Nergaard, Ketil Lenning. and Chris Levett, Smedvig Production Contracting AS
O T C 8258 Mobile Offshore Production Systems: An Analysis of Technical and
Commercial Trends 879
Bruce Crager, Fred Shumaker, and Chuck McCabe, Oceaneering Production Systems
O T C 8259 FPSO's Fulfilling Shelf Requirements by the Maritime Approach 891
7! Batman, Det Norske Veritas
O T C 8260 Turret Mooring System Design and Analysis for Harsh Environments 903
Ken Huang and Sandra Judge, Noble, Denton & Assocs. Inc.
O T C 8261 The Hydrodynamic Model Testing for Closed Loop DP Assisted Mooring 913
A. B, Aalbers, Maritime Research Inst., and A.A. Merchant, FELS
O T C 8262 Evaluation of Axial and Lateral Modal Superposition for General 3D Drilling
Riser Analysis 921
O. Burgdorf Jr., Westinghouse Electric Corp.
O T C 8264 Atlantic Alliance: The Next Generation Tension Leg Platform 933
B. L Logan ond S. Naylor. AMEC Process & Energy: T. Munkejord, Aker Engineering; and C. Nygaard. Aker Nonvegian Contractors
