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Outer Continental Shelf Core and Sample Repository

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Project Status: 
Active
Project Contact(s): 
Peter P. McLaughlin

The Delaware Geological Survey's Outer Continental Shelf (OCS) Core and Sample Repository is a large collection of cores and samples from oil and gas wells drilled offshore the Atlantic Coast of the U.S. during the 1970s and 1980s. This collection was assembled from the contributions of federal agencies, other state agencies, and private institutions that have recognized the value of having a centralized repository for this material.

One of the missions of the DGS is to understand the geology of the lands under the ocean adjacent to our state, providing information that can provide the basis for planning decisions involving potential offshore deposits of oil and gas, as well as other mineral resources. As part of this mission, the DGS strives to maintain an understanding of the regional context of the offshore geology of the state, with interests in the geologic evolution of the U.S. Atlantic seaboard. The DGS Outer Continental Shelf (OCS) Core and Sample Repository is an important resource for ensuring access to sample material related to these interests as other core and sample repositories for these materials have been closed, consolidated, or reduced in size.

Summary of Holdings

The Repository contains samples from all 51 oil and gas wells drilled in the U.S. North Atlantic, Middle Atlantic, and South Atlantic offshore regions between 1977 and 1984. Samples include cores, unwashed cuttings, vials containing samples processed for micropaleontology and palynology, and thin sections of core, cuttings, and micropaleontology and palynology splits.

  • 465 Boxes of core material
  • 245 boxes of unwashed cuttings containing approximately 5000 individual samples
  • 1959 boxes of washed cuttings containing approximately 40,000 individual samples
  • 32 boxes of vials containing approximately 6500 individual samples
  • 88 boxes of thin sections containing approximately 6300 slides
  • geophysical logs, micropaleontology summaries, and other data from many of the wells

Source of Material

The Minerals Management Service (MMS) of the U.S. Department of the Interior has been a major contributor to and supporter of the DGS Outer Continental Shelf (OCS) Core and Sample Repository. When the Atlantic Region Office of the MMS was consolidated with the Gulf Coast Office, samples then housed by the MMS in Reston, VA, were transferred to the Delaware Geological Survey to form the repository. Since that time, samples have been acquired from several petroleum exploration sources, including Occidental, and Shell, as well as from the U.S. Geological Survey and the Texas Bureau of Economic Geology. In August, 2000, new material acquired from CoreLabs was added to the collection.

Inventory Summary

The table below is a summary of Atlantic OCS oil and gas exploratory wells and sample holdings in the DGS OCS Sample Repository. The sample types available are indicated using the following codes:

  • CR-core
  • CT-washed cuttings
  • UCT-unwashed cuttings
  • V-vials
  • TS-thin sections and slides (including rock thin sections, kerogen slides, paleo slides and palynomorph slides)
Region Lease# Well# Operator Spud Date ComplDate Depth Drilled MMS Report # CR CT UCT V TS Other Geophys.
Logs
Mid
Atlantic
75  17-1 Mobil 1/6/1979 1/24/1979 1200      X X        
Mid
Atlantic
75  17-2 Mobil 1/26/1979 5/14/1979 13992      X   X ?   X
Mid
Atlantic
370  93-1 Shell 7/14/1984 11/7/1984 17740  86-0218 X X   X X    
Mid
Atlantic
81  106-1 Murphy 12/27/1979 5/29/1980 18405  86-0117   X   X X   X
N.
Atlantic
170  133-1 Exxon 7/24/1981 11/24/1981 14118  89-0007 X X   X X    
N.
Atlantic
179  145-1 Conoco 5/13/1982 8/24/1982 14500    X X   X X    
N.
Atlantic
182  187-1 Tenneco 3/12/1982 8/21/1982 18127      X   X X   X
S.
Atlantic
3686  208-1 Tenneco 5/29/1979 7/9/1979 7754      X   X X    
Mid
Atlantic
96  272-1 Shell 12/30/1978 2/19/1979 13500      X   X ?   X
N.
Atlantic
196  273-1 Mobil 6/30/1982 9/13/1982 15580      X   X X   X
Mid
Atlantic
97  273-1 Shell 7/15/1978 12/16/1978 17500    X X X X X   X
N.
Atlantic
200  312-1 Mobil 12/8/1981 6/27/1982 20000      X   X X   X
N.
Atlantic
210  357-1 Shell 4/14/1982 9/27/1982 19427      X   X X   X
Mid
Atlantic
317  372-1 Shell 5/26/1984 7/11/1984 11631  87-0118 X X   X X   X
N.
Atlantic
218  410-1 Shell 7/27/1981 3/31/1982 15568      X   X X    
S.
Atlantic
3695  427-1 Tenneco 7/13/1979 8/15/1979 7472      X   X X    
S.
Atlantic
3699  472-1 Exxon 10/8/1979 11/18/1979 7578      X   X X    
Mid
Atlantic
131  495-1 Tenneco 6/12/1979 10/11/1979 18300    X X   X X   X
Mid
Atlantic
500-1 Exxon 7/18/1979 9/28/1979 12253      X   X X   X
Mid
Atlantic
15  544-1 Mobil 6/23/1978 12/29/1978 17449    X X X X X   X
Mid
Atlantic
15  544-2 Mobil 8/28/1981 10/1/1981 8312      X         X
S.
Atlantic
3705  564-1 Exxon 11/19/1979 2/12/1980 12863      X   X X    
Mid
Atlantic
336  586-1 Shell 12/30/1983 5/24/1984 16000  86-0099 X X   X X   X
Mid
Atlantic
337  587-1 Shell 8/2/1983 12/26/1983 14500  87-0074 X X   X X    
Mid
Atlantic
24  590-1 Conoco 4/17/1978 6/7/1978 12000      X   X X   X
Mid
Atlantic
28  598-1 Texaco 4/16/1978 8/26/1978 15025    X X   X X   X
Mid
Atlantic
28  598-2 Texaco 9/3/1978 3/20/1979 17708      X   X X   X
Mid
Atlantic
28  598-3 Texaco 12/4/1979 5/25/1980 16103  86-0129   X X X X   X
Mid
Atlantic
28  598-4 Texaco 10/21/1980 3/24/1981 16050      X   X X   X
Mid
Atlantic
29  599-1 Exxon 4/25/1980 11/2/1980 17121    X X   X X   X
Mid
Atlantic
32  632-1 Shell 4/24/1978 7/14/1978 14000    X X X X X    
Mid
Atlantic
38  642-1 Texaco 3/23/1979 12/1/1979 17807  89-0027 X X X X X   X
Mid
Atlantic
38  642-2 Tenneco 1/20/1979 6/10/1979 18400  86-0077   X   X X   X
Mid
Atlantic
38  642-3 Tenneco 5/27/1980 10/14/1980 16475      X   X X   X
Mid
Atlantic
42  676-1 Houston
Oil
6/2/1978 9/22/1978 12500      X   X ?   X
Mid
Atlantic
46  684-1 Exxon 1/24/1977 3/29/1978 17620      X   X X   X
Mid
Atlantic
46  684-2 Exxon 1/5/1979 7/15/1979 16800    X X   X X   X
Mid
Atlantic
48  718-1 Gulf 1/19/1979 3/31/1979 12813      X   X ?   X
Mid
Atlantic
52  728-1 Exxon 5/9/1981 7/4/1981 15205      X   X X   X
Mid
Atlantic
55  816-1 Exxon 11/4/1980 5/7/1981 17753      X   X X   X
Mid
Atlantic
57  855-1 Houston
Oil
9/24/1978 2/8/1979 17505      X   X     X
Mid
Atlantic
59  857-1 Gulf 6/10/1978 1/29/1979 18554      X   X X    
Mid
Atlantic
65  902-1 Exxon 11/1/1978 4/15/1979 15968   X X   X X    
S.
Atlantic
3664  913-1 Getty 8/17/1979 9/14/1979 7000      X   X      
N.
Atlantic
153  975-1 Exxon 11/25/1981 3/10/1982 14605    X X   X X    
S.
Atlantic
3671  1005-1 Transco 9/19/1979 12/14/1979 11635      X   X X    
Mid
Atlantic
NJ
18-3, Blk 594
COST
B-2
Ocean
Prod.
12/14/1975 3/28/1976 16043  OCS-0001,
OCS-0053
X X   X X   X
Mid
Atlantic
NJ
18-6, Blk 66
COST
B-3
Chevron 10/9/1978 1/24/1979 15820  OCS-0002,
OCS-0058
X X X X X   X
N.
Atlantic
NK
19-11, Blk 79
COST
G-1
Ocean
Prod.
4/6/1976 7/27/1976 16071  OCS-0003,
OCS-0059
X X   X X    
N.
Atlantic
NK
19-12, Blk 141
COST
G-2
Ocean
Prod.
1/6/1977 8/6/1977 21872  OCS-0004,
OCS-0059
X X X X X   X
S.
Atlantic
NH
17-5, Blk 387
COST
GE-1
Ocean
Prod.
2/24/1977 6/15/1977 13254  OCS-0005,
OCS-0006
X X   X     X
    Caldrill           X            

Spreadsheets are available from the Delaware Geological Survey with detailed inventories of all sample holdings. For more information, please contact Kelvin Ramsey at kwramsey@udel.edu or Pete McLaughlin at ppmclau@udel.edu.