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doi:10.2204/iodp.sp.308.2005

SITE SUMMARIES (CONTINUED)

Site: BT4-1B
Priority:
 		Secondary
Position:
 		27.36771232°N, 94.35774732°W
Water depth (m):
 		1405
Target drilling depth (mbsf):
 		300
Approved maximum penetration (mbsf):
 		300
Survey coverage:
  • Rudder 2-D dipline 3020
  • Shotpoint 284.00
  • Rudder 2-D crossline 3019
    • Objectives:
         		Hydrodynamic analysis of a passive margin. Brazos-Trinity Basin #4 sites are to serve as a reference location to establish basic rock and fluid properties over a range of effective stresses in a normally pressured section.
    Drilling program:
         		APC to refusal with drillover and XCB
    Wireline logging program:
         		Triple combo, FMS-sonic, VSP
    MWD program:
         		GVR, ADN, APWD
    Nature of rock anticipated:
         		Hemipelagic mudstone with some unconsolidated turbidite sand

    Site: BT4-3A
    Proposed Site
         		BT4-3A
    Priority:
         		Secondary
    Position:
         		27.27568317°N, 94.39891740°W
    Water depth (m):
         		1459
    Target drilling depth (mbsf):
         		280
    Approved maximum penetration (mbsf):
         		280
    Survey coverage:
  • Rudder 2-D dipline 3020
  • Shotpoint 196.36
  • Rudder 2-D crossline 3055
    • Objectives:
         		Hydrodynamic analysis of a passive margin. Brazos-Trinity Basin #4 sites are to serve as a reference location to establish basic rock and fluid properties over a range of effective stresses in a normally pressured section.
    Drilling program:
         		APC to refusal with drillover and XCB
    Wireline logging program:
         		Triple combo, FMS-sonic, VSP
    MWD program:
         		GVR, ADN, APWD
    Nature of rock anticipated:
         		Hemipelagic mudstone with some unconsolidated turbidite sand

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