2.300

2.400

2.500

2.600

2.700

2.800

2.900

3.000

3.100

3.200

3.300

3.400

3.500

3.600

3.700

3.800

3.900

4.000

1200.0

5840.0

1300.0

5840.0

1400.0

5840.0

 5000 10000 15000 20000

1328.0

5800.0

1328.0

5900.0

5000 10000 15000 20000

2.300

2.400

2.500

2.600

2.700

2.800

2.900

3.000

3.100

3.200

3.300

3.400

3.500

3.600

3.700

3.800

3.900

4.000

TWO-WAY TRAVEL TIME (SEC)TWO-WAY TRAVEL TIME (SEC)

PROPOSED 

WELLSITE MC692-C WEST EAST NORTH SOUTH

Project No. 1012-2152b Filename: 122152b_ill_MC692-C-2.cdr

INLINE 1328

Illustration MC692-C-2. Portions of Inline 1328 and Crossline 5840 Showing Conditions Beneath Proposed Wellsite MC692-C

CROSSLINE 5840

HORIZON 30

SEAFLOOR

HORIZON 40

RELATIVE AMPLITUDE 

Trough Peak

RELATIVE AMPLITUDE 

Trough Peak

PROPOSED 

WELLSITE MC692-C

HORIZON 10

HORIZON 20

TOP OF

SALT

CHANNEL

CHANNEL

Line:

Trace:

 Horizontal

Distance (ft):

MC

691

MC

692

MC

693

MC

692

MC

648

“MC GREEN UNIT”

“MC BLUE UNIT”

LIMIT OF

INVESTIGATION
1300.0

5840.0

1400.0

5840.0

10000 15000

2.300

2.400

2.500

2.600

2.700

2.800

2.900

3.000

3.100

3.200

3.300

3.400

3.500

3.600

3.700

3.800

3.900

4.000

5000

Line:

Trace:

WATER

FLOW AND

GAS

POTENTIAL

Shallow Water Flow and Gas Potential

HIGH

0 1 2 3

0 = NEGLIGIBLE

1 = LOW

2 = MODERATE

3 = HIGH

NEGLIGIBLE

Horizon Lithology/Stratigraphy

Illustration MC692C-3. Tophole Prognosis Chart, Proposed Wellsite MC692-C, Mississippi Canyon Block 692

Potential Drilling

Constraints

Project No. 1012-2152b Filename: 22152_ill_MC692-C-3.cdr

Water 

Flow

Gas

3-D Seismic Section Through

Proposed Wellsite MC692-C

X = 1,196,237 FT; Y = 10,275,252 FT

N Crossline 5840 at Inline 1328 S

Horizon

TWT

(sec, bsl)

Depth

(ft, bml)

Depth

(ft, bsl)

CROSSLINE 5840 TWO-WAY TIME TRAVEL (SEC)

SEAFLOOR

HORIZON 10

HORIZON 20

2.415

2.472

2.556

4.000

159

394

4,893

-5,917

-6,076

-6,311

-10,810

PROPOSED

WELLSITE MC692-C

HORIZON 30 -6,666 749 2.681

Distance (ft):

Horizontal

Interbedded turbidite and mass-transport deposits. 

Sediments will likely consist of alternating sands, silts, 

and clays. 

Moderate potential for overpressured sands.

Low potential for shallow gas.

HORIZON 40 -8,636 2,719 3.339

MC

692

MC

698

The seafloor dips to the southeast at about 0.2°.

There is a negligible potential for high-density deepwater 

benthic communities within 2,000 ft of the surface location. 

Low potential for shallow water flow and shallow gas.

Channel, mass-transport, and turbidite deposits. 

Sediments likely consist of clays, silts, and possible thin 

sand seams. 

Well-layered clays and silts. 

“MC Blue Unit” - Moderate potential for overpressured sands. 

Low potential for shallow gas.

Low potential for shallow water flow.

Negligible potential for shallow gas.

Negligible potential for shallow water flow and shallow gas.

LIMIT OF

INVESTIGATION

INTERFACE

INTERFACE -7,390 1,473 2.929

-8,268 2,351 3.220

RELATIVE AMPLITUDE 

Trough Peak

FAULT -10,700 4,783 3.968

CHANNEL

UNIT 1 Unit UNIT 2 UNIT 3 UNIT 4 UNIT 5

Interbedded slope-fan and mass-transport deposits.

Sediments are likely alternating sands, silts, and clays.

“Green Unit” - Moderate potential for overpressured sands. 

Low potential for shallow gas.

Low potential for shallow water flow and shallow gas.

Clay-rich mass-transport and turbidite deposits.

Sediments likely consist of clays, silts, and possible thin

sand seams.

Stratified clays and silts interlayered with thin, mud-rich 

turbidite and mass-transport deposits. Thin sand seams are 

possible within the turbidites.

Mass-transport deposits. Sediments are likely clays and

silts with possible discontinuous sand seams.