SITE SUMMARIES

Site: BT4-2A

Priority:	Primary
Position:	27.30136298°N, 94.38753682°W
Water depth (m):	1476
Target drilling depth (mbsf):	340
Approved maximum penetration (mbsf):	340
Survey coverage:	• Rudder 2-D dipline 3020 • Shotpoint 220.76 • Rudder 2-D crossline 3045
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: BT4-4A

Priority:	Primary
Position:	27.26628028°N, 94.40315809°W
Water depth (m):	1435
Target drilling depth (mbsf):	230
Approved maximum penetration (mbsf):	230
Survey coverage:	• Rudder 2-D dipline 3020 • Shotpoint 187.27
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