Deepwater Gulf of Mexico 2004: America's Expanding ... - OCS BBS

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Miles of Pipelines Approved 700 600 500 400 300 200 100 0 39 26 20 Gas Oil 45 12 121 65 32 18 173 42 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 Year 56 95 97 121 62 108 101 28 285 201 172 178 78 53 Figure 50a. Approved deepwater oil and gas pipelines less than or equal to 12 inches in diameter. Miles of Pipeline Approved 700 600 500 400 300 200 100 0 Gas Oil 41 50 40 46 40 39 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 Year 65 103 129 179 32 25 76 41 326 300 224 157 Figure 50b. Approved deepwater oil and gas pipelines greater than 12 inches in diameter. 74
RESERVES AND PRODUCTION The deepwater GOM has contributed major additions to the total reserves in the GOM. Figure 51 shows the proved reserves added each year by water-depth category. Additions from the shallow waters of the GOM declined in recent years but, beginning in 1975, the deepwater area started contributing significant new reserves. Between 1975 and 1983, the majority of these additions were from discoveries in slightly more than 1,000 ft (305 m) of water. It was not until 1984 that major additions came from water depths greater than 1,500 ft (457 m). There is often a significant lag between a successful exploratory well and its hydrocarbons being produced. The success of an exploratory well may remain concealed from the public for several years until the operator requests a “Determination of Well Producibility” from MMS. A successful MMS determination then “qualifies” the lease as producible and the discovery is placed in a field. The discovery date of that field is then defined as the TD (total depth) date of the field’s first well that encountered significant hydrocarbons. Hydrocarbon reserves are still considered unproved until it is clear that the field will go on production. Then the reserves move into MMS’s proved category. Figure 52 includes both proved and unproved reserves for each water-depth category. This figure shows declining reserve additions in shallow water, similar to figure 51, but reveals significantly more deepwater reserve additions and large significant unproved reserve additions in water depths greater than 5,000 ft (1,524 m) beginning in 1998. Figure 53 illustrates the most important feature of the deepwater field discoveries, that their average size is many times larger than the average size of shallow-water fields. During the last 10 years, the average shallow-water field added approximately 5 MMBOE of proved and unproved reserves. In contrast, the average deepwater field added over 86 MMBOE of proved and unproved reserves. DISCOVERIES Figure 54 shows the number of deepwater fields discovered each year, according to MMS criteria, since 1975. (See appendices A and B for listings of deepwater projects and discoveries.) The number of field discoveries for any given year is usually greater than the number of fields that actually go on production. The difference between the number of field discoveries and the number of those that actually produce increased in the late 1990’s, since these recent field discoveries have had little time to reach production. Because of this lag between exploratory drilling and first production, the true impact of recent, large deepwater exploratory successes is not yet reflected in MMS proved and unproved reserve estimates. In an attempt to capture the impact of these deepwater exploratory successes, figure 55 adds MMS-known resource estimates and industry-announced discoveries to the proved and unproved reserve volumes. The industry-announced discovery volumes contain considerable uncertainty, are based on limited drilling, include numerous assumptions, and have not been confirmed by independent MMS analyses. They do, however, illustrate recent activity better than using only MMS proved reserve numbers. The apparent decline of proved reserve additions in recent years is caused by the previously mentioned developmental lag. Figure 56 illustrates the distribution of recent hydrocarbon additions in the GOM, categorized by water depth. The combination of industry-announced deepwater discoveries and MMS estimates illustrates that deepwater exploration is adding significantly to the GOM hydrocarbon inventory. These large additions show the excellent potential for continued growth in deepwater activity levels. 75
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ON COVER - The cover features four
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Table of Contents Page PREFACE.....
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Figures Page Figure 1. The Gulf of
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Figures — continued Page Figure 5
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Tables Page Table 1 List of Deepwat
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INTRODUCTION The deepwater Gulf of
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BACKGROUND DEFINITIONS The GOM Oute
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EXPANDING FRONTIER When the origina
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1992 - 1993 Louisiana Mississippi A
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1992 - 2003 Texas Louisiana Mississ
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fffffffffffffffff 1500 ft Quaternar
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In addition to the traditional oil
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15 Figure 8. Gas hydrates on the se
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1998 - 1999 Louisiana Mississippi A
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4,500 4,000 Number of Active Leases
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ENVIRONMENTAL ACTIVITY The extensiv
Page 37 and 38: Operators submit a remotely operate
Page 39 and 40: 25 Figure 15. Loop and eddy current
Page 41 and 42: 1975 - 1979 Louisiana Mississippi A
Page 43 and 44: 29 Deepwater Discoveries $ #Y Texas
Page 45 and 46: 31 Texas ð PORT ARANSAS 1000 ft 15
Page 47 and 48: Louisiana Mississippi Alabama 33 Te
Page 49 and 50: Pipelines New pipelines Proposed pi
Page 51 and 52: LEASING Until the mid-1990's, leasi
Page 53 and 54: Number of Leases Bid On 600 500 400
Page 59 and 60: 2004 - 2005 (741 leases) Louisiana
Page 61 and 62: DRILLING AND DEVELOPMENT Deepwater
Page 63 and 64: 49 Figure 30. The Discoverer Deep S
Page 65 and 66: 51 Number of Wells Spudded 250 200
Page 67 and 68: 120 > 7,500 ft 107 108 100 5,000 -
Page 73 and 74: 180 160 Deepwater EP Deepwater DOCD
Page 75 and 76: 340 626 390 472 472 456 393 475 590
Page 77 and 78: Year of First Production Table 4 De
Page 79 and 80: Year of First Production Table 4 De
Page 81 and 82: A predominant workhorse of the GOM
Page 83 and 84: 3 Number Installed 2 1 0 2004 69 TL
Page 85 and 86: Flow lines to host platform Subsea
Page 87: 140 131 120 100 78 Number of Wells
Page 91 and 92: 77 Million Barrels of Oil Equivalen
Page 93 and 94: 18 16 14 12 10 8 Number of Fields 6
Page 95 and 96: 81 Million Barrels of Oil Equivalen
Page 97 and 98: 45,000 40,000 Million Barrels Oil E
Page 99 and 100: 1992-1993 1994-1995 1996-1997 Lease
Page 101 and 102: S hallo w- wa ter GOM 11% Deepwater
Page 103 and 104: 1,200,000 1,000,000 Total productio
Page 105 and 106: 1,100,000 1,000,000 Subsea oil Tota
Page 107 and 108: 900,000 800,000 Majors Nonmajors 70
Page 109 and 110: 45,000 40,000 Max oil rate 1,000-1,
Page 111 and 112: 4,000 3,500 Shallow water Deepwater
Page 113 and 114: Texas Auger Louisiana SS182 Troika
Page 115 and 116: SUMMARY AND CONCLUSIONS This report
Page 117 and 118: 2,500 Number of leases Average U.S.
Page 119 and 120: Number of Years 14 12 leas es in p
Page 121 and 122: data for this analysis include only
Page 123 and 124: 80 2500 70 60 Number of leases dril
Page 125 and 126: 4,500 4,000 3,500 Leases tested Lea
Page 127: • Nonmajor companies have made mo
Page 131: REFERENCES Bascle, B. J., L. D. Nix
Page 134 and 135: Project Name Area/Block Water Depth
Page 136 and 137: Project Name Area/Block Water Depth
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Project Name Area/Block Water Depth
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Page 146 and 147:
Sale Number Sale Location Sale Date
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Completed Studies [MMS Study Number
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Group Name Company Name MMS Number
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Group Name Company Name MMS Number
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Appendix G. Subsea Completions. Are
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Area Block API Number Operator Comp
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Area Block API Number Operator 144
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Year Shallowwater Oil (MBOPD) Deepw
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Deepwater Gulf of Mexico 2004: America's Expanding ... - OCS BBS

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