Re: Louisiana: Assumption Parish Bayou Corne Sinkhole 2012
Re: Louisiana: Assumption Parish Bayou Corne Sinkhole 2012
The Advocate does good reporting... a bit more from their link:
Pro-Tech was drilling monitoring wells to sample for natural gas north of La. 70 between Bayou Corne and the sinkhole when it hit gas pockets at less than 50 feet.
Walker-Hill Environmental, which was hired to drill an observational water well, was working in the same area but south of La. 70 when it hit gas Friday at 90 feet.
Earlier, Texas Brine hit gas with its boring equipment at 120 feet, at the top of the aquifer, and again inside the salt dome caprock at 420 feet...
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Snips from the latest Assumption update:
Sept 14
? 1 alert letter (dated 9/13/2012) was released to the parish during this operational period. Findings- DHH recommends immediate remediation of industrial water wells with high levels of methane.
? USGS reported limited seismic activity since 4 September 2012 --- averaging one event per day
? USGS confirms no seismic activity in the area of the butane caverns
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It seems like everything about this is confusing; starting with Chevron's actions. It was reported Here
on 8-8 that Chevron had started removing natural gas out of its NS1 cavern but I haven't found any updates that support that. On 8-17, the DNR Report shows the cavern was blocked and Chevron is working on staging equipment and supplies to begin water injection into the cavern. In the 9-19 report, they still continuing to prepare for water injection. However, in the Assumption update, they state that Chevron is in the process of mobilizing equipment and reconfiguring their system in order to move natural gas out of their cavern by the injection of water. So now I'm wondering if they have moved the gas out or not.
Reuters Reported on 8-8 that Chevron Corp's subsidiary Bridgeline Holdings has declared a force majeure on its natural gas storage cavern near Napleonville, Louisiana, due to seismic activity, it said in a company filing on Tuesday.
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Crosstex activity with its 2 caverns is interesting. When they emptied Well 1, they reported doing so at a rate of ~700bph, according to the DNR reports. They state that the transfer of butane from Well 2 to Well 1 began on 8-20; current status was: Well #1 ? 5837 barrels of normal butane and Well #2 ? 945,919 bbls of normal butane. The last report, 9-10, shows they still have 856,348 barrels in Well 2. On 9-9 and 9-10, for whatever reason, they began removing butane from Well 1 and have left Well 2 idle for 4 days.
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My sympathy goes to all the people who are having to live in limbo; hopefully, things will go well and they will have answers sooner than later.
Re: Louisiana: Assumption Parish Bayou Corne Sinkhole 2012
The Advocate does good reporting... a bit more from their link:
Pro-Tech was drilling monitoring wells to sample for natural gas north of La. 70 between Bayou Corne and the sinkhole when it hit gas pockets at less than 50 feet.
Walker-Hill Environmental, which was hired to drill an observational water well, was working in the same area but south of La. 70 when it hit gas Friday at 90 feet.
Earlier, Texas Brine hit gas with its boring equipment at 120 feet, at the top of the aquifer, and again inside the salt dome caprock at 420 feet...
*****************************
Snips from the latest Assumption update:
Sept 14
? 1 alert letter (dated 9/13/2012) was released to the parish during this operational period. Findings- DHH recommends immediate remediation of industrial water wells with high levels of methane.
? USGS reported limited seismic activity since 4 September 2012 --- averaging one event per day
? USGS confirms no seismic activity in the area of the butane caverns
**********************
It seems like everything about this is confusing; starting with Chevron's actions. It was reported Here
on 8-8 that Chevron had started removing natural gas out of its NS1 cavern but I haven't found any updates that support that. On 8-17, the DNR Report shows the cavern was blocked and Chevron is working on staging equipment and supplies to begin water injection into the cavern. In the 9-19 report, they still continuing to prepare for water injection. However, in the Assumption update, they state that Chevron is in the process of mobilizing equipment and reconfiguring their system in order to move natural gas out of their cavern by the injection of water. So now I'm wondering if they have moved the gas out or not.
Reuters Reported on 8-8 that Chevron Corp's subsidiary Bridgeline Holdings has declared a force majeure on its natural gas storage cavern near Napleonville, Louisiana, due to seismic activity, it said in a company filing on Tuesday.
************************
Crosstex activity with its 2 caverns is interesting. When they emptied Well 1, they reported doing so at a rate of ~700bph, according to the DNR reports. They state that the transfer of butane from Well 2 to Well 1 began on 8-20; current status was: Well #1 ? 5837 barrels of normal butane and Well #2 ? 945,919 bbls of normal butane. The last report, 9-10, shows they still have 856,348 barrels in Well 2. On 9-9 and 9-10, for whatever reason, they began removing butane from Well 1 and have left Well 2 idle for 4 days.
********************
My sympathy goes to all the people who are having to live in limbo; hopefully, things will go well and they will have answers sooner than later.
