Deepwater Field Development and Concept Selection Figure 9: Decision Tree for Large Reservoirs Reservoir size >150mmboe recoverable Production well count >10 Compact reservoir


Production throughput >100mboepd


Areally extensive reservoir


>5,000ft water depth





>5,000ft water depth





Dry tree spar with drilling


Wet tree semi with drilling


• Thunder Horse


Dry tree spar with drilling


• Hoover • Holstein • Mad Dog • Genesis


Dry tree TLP with drilling


• Auger • Mars • Ram Powell • Ursa • Brutus


compact or a really extensive reservoirs. In the former, all platforms have a full drilling rig and all but one have been dry trees. In the latter, all platforms are production only with subsea trees.


Shell operates dry tree TLP platforms with drilling in water less than 5,000ft deep. Primary selection drivers enabled the TLPs flexibility to serve as a hub for future expansion – part of Shell’s corporate strategy. The standardisation strategy resulted in a significant


Wet tree spar Wet tree semi


• Nakika • Atlantis • Ind. Hub


reduction in cycle time and cost with successive platforms and reduced execution risk.


ExxonMobil chose a spar (DDCV) for Hoover in water depth of nearly 5,000ft as a lower-cost alternative to a TLP. Following the success of Hoover, BP (which was non-operating partner) chose the truss spar for Holstein and Mad Dog as part of their standardisation strategy to bring production on line faster for their Atwater Valley developments.


Wet tree FPU


Wet tree spar • Tahiti


Wet tree TLP • Shenzi Wet tree semi


A highly competitive alternative to forgings, castings and fabricated materials


This revolutionizing technology improves your


• A dimensionless stock and short production runs reduce delivery time.


• Near net shape capability eliminates or greatly reduces machining requirements and cuts out the need for critical


welds. • Possibility to manufacture all major stainless steel grades. This manifold with integrated branches and connecting flanges is just


also manufactures flanges, fittings, wye-pieces, elbows, manifolds, valve bodies etc.


Sandvik Powdermet, Phone: +46 220 221 00 www.smt.sandvik.com/powdermet powdermet@sandvik.com


• The homogeneous microstructure and freedom from segregations ensure corrosion resistance and isotropic mechanical properties.


• Excellent resistance towards HISC (Hydrogen Induced Stress Cracking), ref. DNV-RP-F112.


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84  |  Page 85  |  Page 86  |  Page 87  |  Page 88  |  Page 89  |  Page 90  |  Page 91  |  Page 92  |  Page 93  |  Page 94  |  Page 95  |  Page 96  |  Page 97  |  Page 98  |  Page 99  |  Page 100  |  Page 101  |  Page 102  |  Page 103  |  Page 104  |  Page 105  |  Page 106  |  Page 107  |  Page 108