12:15 p.m. Update from DNR

The Office of Conservation is advising Assumption Parish officials and the public in the Bayou Corne area that CB&I and Itasca Group analysis of ongoing seismic monitoring has detected what appears to be an uptick in underground fluid movement below the sinkhole in the vicinity of the failed Oxy 3 cavern in the past 24 hours. As has been noted in earlier similar events, the fluid movement appears to be linked to observations of trees falling into the sinkhole, release of trapped debris from the sinkhole bottom and increased odor from hydrocarbons released to surface. CB&I and Itasca Group analysts have advised that, while the activity appears to represent no additional significant threat to the general area, operations directly on the sinkhole be suspended until subsurface activity slows again.

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

7:30 p.m. DNR Field Update

Office of Conservation
Bayou Corne Field Update
Feb. 14, 2013 Activities

Texas Brine Operations

Oxy 3-A Cavern Well –
Crew tagging depth to cavern floor – Casing Pressure: 600 psi

Texas Brine Facility Vent Well to Top of Aquifer (RW 1 on Oxy 2 well pad) –
Flaring gas at 19.5 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/

ORW 13 Vent Well (Near Oxy 9 well pad)–
Shut in, awaiting work

ORW 14 Vent Well (Near Oxy 10 well pad)–
Shut in, awaiting work

ORW 15 Vent Well (North of Hwy 70)–
Awaiting completion operations

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

TBC 1 (Original Oxy 3 well pad)
Tubing Pressure: 34 psig
Casing Pressure: 18 psig

TBC 2 (Original Oxy 3 well pad)
Tubing Pressure: 19 psig
Casing Pressure: 14 psig

TBC 3 (Oxy 1 well pad)
Tubing Pressure: 0 psig
Casing Pressure: 0 psig

Sinkhole Site –
Monitoring status of sinkhole area

ORW 1 Vent Well (North of Hwy 70)–
Flaring gas at 2.65 mcf/day

ORW 2 Vent Well (North of Hwy 70)
Flaring gas at 4.68 mcf/day

ORW 4 Vent Well (South of Hwy 70) –
Shut in, awaiting work – 188 mcf removed to date

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

ORW 14 Vent Well (Oxy 10 well pad)
Flaring gas at 15.6 mcf/day

ORW 15 Vent Well (North of Hwy 70) –
Flaring gas – tied in to multi-well flare stack, flow rate not established

ORW 22 Vent Well (Well road east of Gumbo St.)
Flaring gas at 15.6 mcf/day

ORW 23 Vent Well (Well road east of Gumbo St.) –
Flaring gas – tied in to multi-well flare stack, flow rate not established

ORW 24 Vent Well (Well road east of Gumbo St.) –
Flaring gas – tied in to multi-well flare stack, flow rate not established

Bayou Corne Community

Bayou Corne Community Aquifer Monitoring Well

BC 2
Tubing Pressure: 56 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 on Rig Road improvements west of sinkhole to southern end of containment – initial southern berm 90 percent complete, initial northern berm 60 percent complete

Drilling of deep geophone well on Rig Road (G 03, south of Hwy. 70) has reached 1,100 feet, preparing to install casing

Perforating ORW 8 (Rig Road west of sinkhole)

Completing well pad for ORW 7 (west of Rig Road near Florida Gas Pipeline route)

Well access road construction begun for vent wells ORW 6 and ORW 9 (west of Rig Road near Florida Gas Pipeline route)

53 indoor air monitors (LEL and H2S monitors) installed in 21 Bayou Corne community structures to date

Field surveying and land access for 3-D seismic ongoing, surveying is 27 percent complete