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Drilling of the sonic rig that encountered gas at 90’ on Friday was stopped and plugged with cement and grout as they were unable to put in the water well due to the inability to control the gas pushing mud and water to the surface. DNR hired The Shaw Group engineers to redesign a well that can be placed for venting operations. The geo-probe rigs for observation continue to be placed at lower depths to check for the presence of gas. They’re currently working on the Dugas & LeBlanc property, north of LA-70 and two geo-probe wells have been placed on Triche property. DNR is currently looking for locations as well as willing individual property owners to place additional geo-probe observation wells.
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The drilling performed by the sonic rig, on Dugas & LeBlanc property on the south side of LA-70, has been halted.
We have been advised that gas was encountered at 90 feet. We have no additional details at this time. Parish officials and state agencies are currently at the site. We will advise further once information is available.
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There has been reported increased seismic activity in the Bayou Corne/Grand Bayou area. This activity is not the sharp tremors that were occurring prior to the development of the sinkhole; however, indications show (through monitors set up by USGS) that seismic activity has been occurring NW of the sinkhole and it’s unknown at this time what this may mean. USGS is continuously monitoring this activity.
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Per Texas Brine, on yesterday while installing a seismic monitoring station in a geo-technical core well, a sonic casing was driven down to 475′.
While removing the outer casing, at 415′ they encountered a pocket of gas which blew grout and mud out of the casing. A gauge was placed at the well head which read 180 pounds of pressure. The drilling company then went back into the casing with heavier drilling mud to complete the operation and not lose the geo-technical core well which is currently setting before the technological equipment can be installed.
