5:50 p.m. DNR Field Update

Office of Conservation
Bayou Corne Field Update
Feb. 22, 2013 Activities

Texas Brine Operations

Oxy 3-A Cavern Well –
Drawing down pressure in preparation for workover –Casing Pressure: 443 psi

Texas Brine Facility Vent Well to Top of Aquifer (RW 1 on Oxy 2 well pad) –
Flaring gas at 2.41 mcf/day

Texas Brine Facility Geophone Well (Between Oxy 2 & original Oxy 3 well pads) –
Ongoing monitoring for seismic activity, data available at http://folkworm.ceri.memphis.edu/heli_temp/

Texas Brine Facility Shallow Pressure Monitoring (TBC 1-3)

TBC 1 (Original Oxy 3 well pad)
Tubing Pressure: 18 psi
Casing Pressure: 18 psi

TBC 2 (Original Oxy 3 well pad)
Tubing Pressure: 4 psi
Casing Pressure: 12 psi

TBC 3 (Oxy 1 well pad)
Shut in

Sinkhole Site –
Monitoring status of sinkhole area

ORW 1 Vent Well (North of Hwy 70)–
Flaring gas at 2.42 mcf/day

ORW 2 Vent Well (North of Hwy 70)
Flaring gas at 3.12 mcf/day

ORW 4 Vent Well (South of Hwy 70) –
Flaring gas at 7.68 mcf/day

ORW 7 Vent Well (Rig Road west of sinkhole)–
Flaring gas at 5.19 mcf/day

ORW 8 Vent Well (Rig Road west of sinkhole)–
Flaring gas at 12.01 mcf/day

ORW 11 Vent Well (Rig Road south of Hwy 70)–
Flaring gas at 8.41 mcf/day

ORW 12 Vent Well (Oxy 3 well pad) –
Flaring gas – tied in to multi-well flare stack, flow rate not established

ORW 13 Vent Well (Near Oxy 9 well pad)–
Workover operations

ORW 14 Vent Well (Near Oxy 10 well pad)–
Flaring gas at 8.7 mcf/day

ORW 15 Vent Well (North of Hwy 70)–
Flaring gas at 23.51 mcf/day

ORW 16 Vent Well (Marsh area south of community)–
Flaring gas at 13 mcf/day

ORW 22 Vent Well (Well road east of Gumbo St.)
Flaring gas at 22.94 mcf/day

ORW 23 Vent Well (Well road east of Gumbo St.) –
Flaring gas at 3.67 mcf/day

ORW 24 Vent Well (Well road east of Gumbo St.) –
Flaring gas at 12.01 mcf/day

ORW 26 Vent Well (South of Hwy 70) –
Flaring gas at 8.21 mcf/day

Bayou Corne Community

Bayou Corne Community Aquifer Monitoring Well

BC 2
Tubing Pressure: 54 psi
Casing Pressure: 10 psi

Other Actions in Near-Term on Office of Conservation Directives

In status updates to Office of Conservation, Texas Brine reports:

Work continues to build out Rig Road west of sinkhole to access marsh vent well locations ORW 17, 18 and 19 – initial sinkhole containment nearly complete

Drilling of deep geophone well on Rig Road (G 03, south of Hwy. 70) completed, casing cemented and cement bond log performed – finalizing design of geophone array

Perforating ORW 9 (Marsh area west of Rig Road), completing ORW 6 (Marsh area south of community), preparing to drill ORW 5 (South end of Rig Road)

61 indoor air monitors (LEL and H2S monitors) installed in 24 Bayou Corne community properties to date

Field surveying and land access for 3-D seismic ongoing, surveying is 59 percent complete, drilling is 25 percent complete

Mid-to-deep aquifer monitoring wells (MRAA 1-3) – MRAA 1 (Oxy 1 well pad) screens set, ready for sampling; MRAA 2 (Oxy 2 well pad) well installed, determining depth to set casing and screens; MRAA 3 (Oxy 3 access road) well being drilled