narnug

Sink holes - What are they?

456 posts in this topic

Sinkhole engineer: Little can be done if cavern is fractured

August 25, 2012

Deborah Dupre

"If the sinkhole cavern is fractured, little can be done was the news approximately 350 residents heard at a public meeting Friday night in Pierre Part about recent developments of the pending oil and gas-related catastrophe.

“If it’s a cavern fracture, failure, whatever, there’s little that you can do,” Department of Natural Resources' (DNR) civil engineer who is coordinating the science group studying the sinkhole, Chris Knotts told the crowd at the public meeting Friday night in Pierre Part, Louisiana.

A “low but audible rumble in the crowd” followed that statement by Knotts, according to David Mitchell, reporting for The Advocate.

“If it’s as simple as a casing, yes (it can be fixed),” Knotts said.

snip

"The 1-mile-by-3-mile Napoleonville Salt Dome below the expanding sinkhole is a large salt deposit pushed up from an ancient seabed below the earth's crust, now housing 51 oil and gas-related facilities.

Texas Brine Co. has an abandoned storage cavern in that salt dome that it carved in 1973, believed by some to be the cause of bubbling sinkhole and gas bubbles percolating in the nearby bayous. Other scientists, those involved with the Louisiana Environmental Action Network, have said they believe that the cavern is not be the source of the gas bubbles increasingly spotted on nearby Grand Bayou, nor the thousands of earthquakes recorded before the sinkhole developed.

DNR permitted the company to pump radioactive waste into its cavern and the cavern has had problems since early 2011, issues kept from the public until after the sinkhole developed.

It is now known that radiation is 15 times the state's acceptable level in the sinkhole are

snip

Meanwhile, Louisiana's crises team has been activated for the impending Tropical Storm Isaac that is also threatening the sinkhole area only 63 miles from the Gulf of Mexico.

Read more at...

http://www.examiner.com/article/sinkhole-engineer-little-can-be-done-if-cavern-is-fractured

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Radiation Expert: “There are immediate radiation dose concerns” from sinkhole — Gov’t is in denial — “They don’t know what to do about the radioactive contamination”

There are immediate radiation dose concerns.

The release could reach the usable aquifer and contaminate drinking water along with livestock and irrigated crops. [...]

http://enenews.com/radiation-expert-there-are-immediate-radiation-dose-concerns-from-sinkhole-govt-is-in-denial-they-dont-know-what-to-do-about-the-radioactive-contamination

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[Isaac shifts toward sinkhole, ‘extremely dangerous,’ Mobile Command demobilizes

ith the anniversary of Hurricane Katrina's flooding and oil and gas explosions hours away, Tropical Storm Isaac gained strength Sunday and forecasters warned Isaac could become an extremely dangerous Category 2 hurricane as it begins tracking toward the northern Gulf Coast in the Bayou Corne, Louisiana sinkhole vicinity where Mobile Command is demobilizing and more residents are told to evacuate.

http://www.examiner.com/article/isaac-shifts-toward-sinkhole-extremely-dangerous-mobile-command-demobilizes

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My geography skills of the states is quite bad.

So did Isaac made a direct hit on sinkhole or missed the location entirely or we still waiting?

Salt Cavern and Water sounds like lots of salty radioactive water is on the cards.  Is this what the US(World) public needs to put a stop on Nuclear Power Plants as the waste is a problem!!

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Myth...It has been stalled over New Orleans for hours...and it will progress to the sinkhole..latest news says it will be over the sinkhole for 5 hours.....I put an article on the thread I started about Hurricane/sinkhole...that sinkhole is now 3 football fields...they sure don't need 12/18 inches of rain..over here is more info...

http://thechaniproject.com/forum/index.php/topic,4399.0.html

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Don Quixote posted the link for this story in the shout box...so I am going to post it here.

Crosstex to relocate pipeline near Bayou Corne sinkhole, Says it can’t explode

Sept. 2, 2012

BY TED GRIGGS, the Advocate

"Crosstex Energy LP will reroute its 36-inch natural gas pipeline located near the Bayou Corne sinkhole, a project that will cost $20 million to $25 million and take around a year to complete, according to the Dallas-based company.

Discovery of the sinkhole Aug. 3 forced the company to close a section of the pipeline and secure alternative natural gas supplies for its customers, Crosstex said. Closing that section of pipeline is costing Crosstex around $250,000 to $300,000 a month.

Crosstex Energy is looking into recovering its losses from the “responsible parties and insurance coverage,” the company said.

The Louisiana Department of Natural Resources has said a plugged-and-abandoned salt cavern inside the Napoleonville Salt Dome had failed and could be the cause of the sinkhole."

snip

"According to DEQ, the storage caverns lie more than half a mile deep in the stable part of the salt dome, while the sinkhole has a depth of around 300 feet.

At the storage depth and pressure, the butane is liquid, according to DEQ. The only way to get the butane to the surface is by pumping salt water, a heavier liquid, into the cavern to force the liquid butane up to the surface.

Given the butane’s location — more than half a mile below ground, under great pressure and with no oxygen available — an explosion is not possible, according to DEQ.

Even if the salt dome fractured, the liquid butane would flow only into the cracks of the salt dome and not come to the surface, according to DEQ."

http://theadvocate.com/news/3785388-123/crosstex-to-relocate-pipeline-near

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Thanks Kdog and Breezy

http://lasinkhole.wordpress.com/2012/09/02/almost-a-million-barrels-of-liquid-propane-stored-at-sinkhole/

"Almost a MILLION Barrels of Liquid Propane Stored at Sinkhole!

see article in NEXT post.

Crosstex says around 900,000 BARRELS. ‘Around’??:-\

Prayers for La.

Give or take … what?  100,000 barrels? 50,000 barrels?  Isn’t there a gauge or something??

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United States

As of November 2011, the retail cost of propane was approximately US$2.825 per gallon, or roughly $30.82 per 1 million BTUs.

http://en.wikipedia.org/wiki/Propane

Interesting little piggy bank when you think about it...

and just to equate something Carbon Taxable

Greenhouse gas emissions factors for propane are 62.7 kg CO2/ mBTU or 1.55 kg of CO2 per liter or 73.7 kg/GJ

Adds a new dimension to the term CARBON SINK  :P gotta love the petrochemical industry, now if they released the propane onto the open market the price would drop like a stone... but as it was a BY PRODUCT of making petrol they have to maximise the potential profit theft....

The more I type the angrier I become... have to cool my heart.

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Breaking News: Louisiana sinkhole alarms reported, seismic activity spikes

Bayou Corne sinkhole disaster

September 3, 2012

By: Deborah Dupre

"Louisiana sinkhole area residents reported to Assumption Parish officials hearing alarms over the weekend, but were told by officials that alarms are not going off. The alarm reports coincide with a spike in seismic activity, according to The University of Memphis Center for Earthquake Research and Information (CERI), and also might coincide with resumed drilling into the sinkhole area after Tropical Storm Isaac left it.

Just hearing bells? Alarms heard might link to Bayou Corne sinkhole area seismic activity at Monitor #3 on Hwy. 70

According to the University of Memphis team's hellicorder charts of two of the six seismic monitors its Louisiana sinkhole team placed in the sinkhole area, monitors # 3 and # 9 at locations near Highway 70 in the Bayou Corne area, have recorded unusually higher seismic activity on September 2."

snip

"The University of Memphis, that has a contract with US Geological Survey to monitor seismic activity in the Bayou Corne sinkhole area, had recorded thousands of quakes in early August.

After locals reported to officials that they had heard alarms, officials responded to those reports in their blog post on Sunday:

"It has been brought to our attention that some people are speculating about alarms going off in the Bayou Corne area. Despite the fact that the OEP (Office of Emergency Preparedness) office is closed until Tuesday, calls have been made inquiring about such alarms, and it has been confirmed that alarms are NOT going off in the Bayou Corne area."

snip

""Well, I'm very concerned," a parish official told CBS last month, then referring to Lake Peigneur 80 miles west of the Bayou Corne sinkhole.

Lake Peigneur balances above a salt dome that collapsed in 1980 when a drilling rig punctured a protective layer in the salt mine wall, causing the entire lake, including a drilling rig, several larges barges, and large chunks of surrounding land to be sucked into the cavern.

"When you look at the scenario that happened in Lake Peigneur," the official said on CBS News, "the pronunciation of that I think is Lake Pen-oar, now you have a sink hole on top of a salt dome, with the suction and the pressure going down, I would certainly assume it's possible that it can penetrate the dome and then we definitely have an issue there."

At the time of publishing this article, officials at the Assumption Parish Police Jury and University of Memphis Center for Earthquake Research and Information Center have not returned Dupré's telephone calls and emails she sent to them Monday morning."

Read entire story here...

http://www.examiner.com/article/breaking-news-louisiana-sinkhole-alarms-reported-seismic-activity-spikes

I don't know how  you guys feel about this situation, but imo...IF the drilling is causing vibrations that set off seismic alarms, and IF, just IF that is what's doing it...then that means the whole area is seriously unstable...and YES...IF I were them...I sure as the dickens would be remembering Lake Peigneur....Yeppers...I sure would...seriously wishing everyone impacted good luck...

ALERT ,SEISMIC ACTIVITY AND ALARMS GOING OFF IN LOUISIANA SINKHOLE

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More bubble sites near sinkhole

Three new bubbling locations have emerged in waterways near a large sinkhole in Assumption Parish and near other bubbling sites where natural gas has been percolating up from the water, parish officials said Tuesday.

The new bubbling spots were found on Bayou Corne, Grand Bayou and Triche Canal south of La. 70 South, parish officials said in a blog post. The sites come in addition to a new bubbling location found Aug. 20 in Grand Bayou between two other previously noted sites.

http://theadvocate.com/home/3809460-125/more-bubble-sites-near-sinkhole

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Sinkhole butane ‘no danger’ reports flawed say scientists

Sept 4, 2012

Debroah Dupre

"The sinkhole butane cavern company, Crosstex Energy LP stated this weekend it will reroute its 36-inch natural gas pipeline in the salt dome under Bayou Corne’s sinkhole, but that its calculations show its operation poses little-to-no-threat to nearby residents, backed by Louisiana departments of Natural Resources (DNR) and Environmental Quality (DEQ), but its previous calculations related to its butane well safety are based on flawed science, say independent scientists who spoke with Examiner's Deborah Dupré.

Louisiana sinkhole news this weekend was Dallas-based Crosstex Energy LP saying again it will reroute its 36-inch natural gas pipeline in the 1-mile by 3-mile Napoleonville salt dome, part of which is under the Bayou Corne sinkhole.

“In an abundance of caution, we have decided to make some piping changes and move product from the well closest to the slurry to the well farthest from slurry to further alleviate any concerns from public,” Jill McMillan, Crosstex spokeswoman had said, as reported Aug. 19. The butane was to be moved, in the same salt dome, 1000 feet further from the sinkhole."

snip

"The only way to get the butane to the surface is by pumping salt water, a heavier liquid, into the cavern to force the liquid butane up to the surface," it reported to The Advocate. “Given the butane’s location — more than half a mile below ground, under great pressure and with no oxygen available — an explosion is not possible, according to DEQ. Even if the salt dome fractured, the liquid butane would flow only into the cracks of the salt dome and not come to the surface, says DEQ.”

Maybe no explosion, but hazardous should there be any route to the surface air, such as through a fissure, say independent scientists, physicist Steve Knudsen and retired neuroscientist Dr. Paul Brown, both of whom have been communicating with Dupré.

Chris Knotts, the Department of Natural Resources (DNR) civil engineer coordinating the science group studying the sinkhole, acknowledges that the sinkhole might be fractured, in which case, he says, little can be done to repair it.

If the butane has access to the air, then it would start to evaporate and disperse into the air, Brown and Knudsen say. It is a highly volatile liquid, which means it evaporates quickly.

“Since it hugs the ground, it could suffocate animals including people,” Brown told Dupré Monday. “If it comes in contact with a spark or flame, it is potentially explosive, depending on the amount released and availability of oxygen.”

Officials have not placed a burn ban on Assumption Parish or the sinkhole area community, according to Assumption Parish officials on their blog: “Burning is allowed as long as it is 1,000 feet from a residence or highway.”

snip

"“I think they are misguiding us with their evaluation,” retired neuroscientist Brown told Dupré, concurring with energy research consultant Dr. Steven Knudsen, a physicist.

Knudsen, with an M.S. in Physics from University of Maryland, said, “It seems consistent with physical principles that a sinkhole could cause a large enough breach in an underground salt formation for the contents to be exposed to air near atmospheric pressure.”

“Heck, some of these state regulators wouldn’t know sound science if it jumped up out of the swamp and bit them in the tail end,” stated attorney Stuart Smith on his Aug. 16 blog."

snip

"The company’s claim of no danger of a significant leak exists is based on the storage area’s depth and butane’s weight of butane weight and vapor pressure.

“Crosstex’s evaluation at http://www.slideshare.net/Revkin/louisiana-officials-little-risk-of-butane-explosion-at-sinkhole-site can’t properly be called an evaluation, because it doesn’t include their actual analysis,” Brown said.

“Further, it’s misleading in the claim that ‘The analysis showed that a natural sustained liquid flow (e.g. hydrocarbons exiting the well without pumping) from the well is not possible due to the depth of the well, the weight of the liquid hydrocarbons, and the vapor pressure of the well’s contents.’”

Crosstex mentions the fact that a 2000-foot deep column of normal butane in the well will exert a natural pressure, due to gravity, of over 520 psi [pounds per square inch].

“The [upward vapor] pressure exerted by the butane stored in the well is less than 25 psi. Therefore, due to the amount of pressure pushing downward the liquid in the well will not free-flow upward to the surface without a mechanical means for doing so, such as pumping.” [insertions by author for clarity]"

snip

"Despite assurances of safety by Crosstex and state regulators, some residents, such as Alicia Heilig, say they want the butane removed from the entire area.

"There are too many unknowns to take risks with the cavern," Helig, 27, told Dupré, noting "the widely suspected connection between the sinkhole and Texas Brine's cavern remains an unconfirmed theory.

“’They don’t know’ is my point,” said Heilig, who lives just outside the evacuation zone with her two young children."

Read the story here

http://www.examiner.com/article/sinkhole-butane-no-danger-reports-flawed-say-scientists

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Sinkhole drillers near cavern, warning to be issued

Sept 8, 2012

By: Deborah Dupre  UPDATE

"Following Tropical Storm Isaac battering through Assumption Parish, home of the mysterious giant sinkhole, at 3:00 p.m. Friday, drilling there reached 1,403? according to officials Saturday who advise that a 48-hour warning will be issued before the cavern is reached.

Assumption Parish officials have stated that Texas Brine Co. says the exploratory drilling into the sinkhole area is on schedule.

"The estimated date that drilling will enter the cavern is 09/26," officials stated on their blog post Saturday.

"We have advised Texas Brine to advise 48 hours prior to the cavern being reached so that notifications can be sent to residents.

Officials intend to issue a telephone advisory when the drilling is 48 hours away from entering the cavern."

Read Story here

http://www.examiner.com/article/sinkhole-drillers-near-cavern-warning-to-be-issued

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Multiple gas pockets hit around sinkhole, operation halted

Officials order ‘immediate action’ to assess risk “New data indicates gas is in aquifer”

Sept. 14, 2012 UPDATE

"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."

http://enenews.com/operation-halted-at-sinkhole-multiple-gas-pockets-hit-officials-order-immediate-action-to-assess-risk-new-data-indicates-gas-is-in-aquifer

:PSinkhole: “Declaration of Emergency” to ensure public safety

after shallow gas pockets found near edge of Napoleonville Salt Dome

Sept 15, 2012

"BATON ROUGE – Louisiana Commissioner of Conservation James Welsh announced today that he has ordered all companies operating on the Napoleonville Salt Dome to immediately begin work to assess the presence of natural gas in both the ground water aquifer and the salt dome cap rock beneath their operations; capture, vent or flare any natural gas that is encountered; and analyze any potential impacts to ground water in the Mississippi River Alluvial Aquifer."

snip

"Welsh said he issued the order to dome operators as part of a formal Declaration of Emergency and Directive to ensure public safety following the Office of Conservation’s discovery of two shallow pockets of natural gas in an area between the western edge of the Napoleonville Salt Dome and the Bayou Corne community. A contractor hired by the Office of Conservation drilled monitoring wells to sample for natural gas, and encountered the natural gas pockets at a depth of less than 50 feet from surface on Thursday.

This discovery comes as Conservation staff analyzed new data from Texas Brine LLC’s report to the Office of Conservation. The data indicated pockets of natural gas within the Mississippi River Alluvial Aquifer and the cap rock above the salt dome. That data came after DNR ordered Texas Brine to evaluate belowground conditions. Part of Texas Brine’s effort to comply with that order included the drilling of a shallow well to house seismic equipment in addition to the deeper well intended to enter the abandoned salt cavern.

Texas Brine’s shallow seismic well, drilled to about 465 feet, encountered natural gas near the top of the ground water aquifer at about 120 feet deep, and again within the salt dome cap rock at about 420 feet deep."

snip

Read more here

http://enenews.com/declaration-of-emergency-to-ensure-public-safety-after-shallow-gas-pockets-found-near-edge-of-napoleonville-salt-dome

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Video of sinkhole from 9/15/2012

Published on Sep 16, 2012 by assumptionla

Video footage taken from the pipeline right of way

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Sinkhole: Gas could not be controlled from well, mud and water pushed to surface

Workers plug with cement, dismantle drilling rig

"Title: 11:00 a.m. Sunday Update

Source:  Assumption Parish Police Jury

Date: Sept 15, 2012

"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."

"The drilling rig is being dismantled and moved out today"

http://enenews.com/sinkhole-gas-could-not-be-controlled-mud-and-water-pushed-to-surface-well-filled-with-cement-drilling-rig-dismantled

Tremors return by sinkhole

By David J. Mitchell

River Parishes bureau

September 17, 2012

"GONZALES — The sharp earth tremors that rattled the Bayou Corne community during the summer and presaged the emergence last month of a large sinkhole in Assumption Parish have returned, a University of Memphis scientist said.

The tremors appeared to build in July, reached a crescendo of several hundred per day then stopped at 2 p.m. Aug. 2, hours before the sinkhole was found early Aug. 3 on the property of Texas Brine Co. of Houston, officials said.

Later that same evening, the sinkhole prompted parish officials to call for a mandatory evacuation of 150 households in the Bayou Corne and Grand Bayou areas. It remains in effect."

"Steve Horton, research scientist with the University of Memphis Center for Earthquake Research and Information, said Friday that about a week ago, one or two sharp tremors began reoccurring every day or so."

read story here..

http://theadvocate.com/home/3912952-125/tremors-return-by-sinkhole

Now here's an interesting thought...verneshot    thanks Korvex...

http://en.wikipedia.org/wiki/Verneshot

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ok  updates on sinkhole in Louisiana...

Meeting scheduled about Assumption sinkhole

Sept 18, 2012

AM

"BAYOU CORNE — Residents will hold an emergency town-hall meeting to encourage state and local officials to provide more information about the sinkhole in Assumption Parish.

snip

"John Achee Jr., a community activist, said the meeting will be held at 6:30 p.m. Thursday at the St. Joseph the Worker Church parish hall in Pierre Part."

http://www.dailycomet.com/article/20120918/WIRE/120919666/1223?Title=Meeting-scheduled-about-Assumption-sinkhole

They are gonna try a little friendly persuasion..to get someone to tell them something..uh huh....

Assumption Parish Police Jury

Sept 18, 2012

PM

"The Assumption Parish Office of Homeland Security and Emergency Preparedness and the Unified Command Group have not called for a public meeting this week. It has been brought to our attention that a meeting planned by citizens has been called for on Thursday. No formal notice of this meeting was issued to parish and state officials prior to information being released to the media. The preparation time needed for professional and up-to-date data to be presented and distributed requires 72 hours, minimum. We have been advised by Texas Brine that entry into Oxy Cavern #3 could take place on Thursday at the earliest; however, more likely by Friday evening. It would be inappropriate to hold a meeting on Thursday, 9/20/12, as the focus and resources of all responding agencies are on Texas Brine entering the cavern."

Sorry...locals...you didn't notify Texas Brine 72 hours ahead...so no meeting....gee, I thought I read/posted that drilling had stopped on 9/15/12

http://assumptionla.wordpress.com/

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Sinkhole grows 400 feet, gas pressure too great for drillers

Bayou Corne Disaster

Deborah Dupre

Sept 19, 2012

"Along with both increased seismic activity and gas bubbling sites in recent days, Assumption Parish officials reported Tuesday that the Bayou Corne, Louisiana sinkhole has grown 400 square feet, according to Texas Brine LLC, as the drillers found they were unable to set the exploratory well due to the gas pressure, and evacuees learn that they might be unable to return home for a year.

Tuesday, Assumption Parish officials reported, "Texas Brine reported a 20? x 20? growth of the sinkhole."

View slideshow: Louisiana sinkhole flyover screenshots 9.18.12 showing 400 foot growth since last flyover

The expanding sinkhole covers part of the massive 1-mile by 3-mile Napoleonville Salt Dome used by oil and gas companies to store and supply hydrocarbons and brine to nearby refineries in the nation's area known as Cancer Alley."

http://www.examiner.com/article/sinkhole-grows-400-feet-gas-pressure-too-great-for-drillers

Sinkhole Site, 9/19/12

Published on Sep 19, 2012 by assumptionla

This footage was taken this morning. At the 1:00 mark, you can see the area of slough-in that Texas Brine reported on yesterday.

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Sinkhole blackout, officials tell media to censor resident meeting

Sept 19, 2012

Deborah Dupre

"After Unified Command officials refused a request from residents, some living only 2,000 feet from the sinkhole disaster, to attend their Emergency Town Hall Meeting, Assumption Parish officials contacted the media and other officials to urge them to shun the meeting, according to a local community advocate and organizer.

"Assumption Parish Officials are calling the media, officals, agencies and Texas Brine in an attempt to discourage them all from attending the the Town Hall Meeting [that] you have pleaded with them to attend and provide you an inperson update on this most dangerous, dynamic, fluid situation," Achee advised sinkhole vicinity residents Wednesday.

Achee had spoken to someone from the media, someone from Texas Brine and "a few other sources, he said.

"It seems they have turned their backs on you," Achee tells the community in a blog post. "This has reached a level of disgust to me."

Read more at..

http://www.examiner.com/article/sinkhole-blackout-officials-tell-media-to-censor-resident-meeting

when you consider the thing collapses at 400 ft at a time, then one must consider living 2,000 feet away is not all that far, correct??  dang..

going to add a couple more links to info...

Sept 20, 2012

http://enenews.com/new-collapse-at-sinkhole-1000-square-feet-of-earth-lost-this-morning

Sept 20, 2012

TV: Officials report more bubbling around sinkhole — Now over 20 sites have appeared

http://enenews.com/tv-officials-bubble-sites-increasing-around-sinkhole-20-appeared-video

Sept 21, 2012  New flyover...don't expect to see a lot only 7 seconds worth..

Sept 21, 2012

Here's what the people of Bayou Corne are worried about..

http://www.examiner.com/article/quake-fire-then-mexican-pipeline-blast-kills-30-sinkhole-residents-fear-same

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Sinkhole expands to 4 acres — 5,000 square feet of land lost since Tuesday (VIDEO)

Sept 22, 2012

"A mechanical breakdown halted the final push Friday to finish a well that will be used to peer into an abandoned salt cavern.

The sinkhole, which has grown larger as dirt and trees on its rim have sloughed off and fallen into the water since it emerged, including this week, is now about 475 feet across and an estimated 4 acres in size, according to new parish dimensions.

The latest collapse, or slough, happened Thursday on the east side of the sinkhole. Several trees were lost in the collapse that went out about 40 feet from the edge and took under about 1,000 square feet of earth, parish officials said in blog posts this week.

The prior collapse on Tuesday happened on the southwest corner of the sinkhole near a pipeline corridor and pulled down 4,000 square feet of dirt and trees, parish officials said."

http://enenews.com/sinkhole-expands-to-4-acres-5000-square-feet-of-land-lost-since-tuesday-video

ADDITIONAL INFO..

Sinkhole: Workers breach roof of salt cavern — No pressure detected

"Drilling has entered the cavern and no gas was encountered. They will drill down 80 additional feet to make sure there are no obstructions and then back out to the cavern’s top to begin wire line surveying, which will take place for the next 48 hours."

http://assumptionla.wordpress.com/2012/09/22/845-p-m-cavern-has-been-entered/

9:05 a.m. Morning Update

Sept 23, 2012

"As previously posted, the cavern was entered at approximately 8:45 last night. At that time, no gas was encountered. At 10:00 p.m. last night, they finished drilling the additional 80? and no obstructions or gas were encountered. At 11:00 p..m. gas started to flow from the cavern at 950 psi. DEQ did obtain samples of this gas as well as samples of the cavern fluid. They are currently flaring the gas off."

http://assumptionla.wordpress.com/2012/09/23/905-a-m-morning-update/

11:00 a.m. Current Activities @ Drilling Site

9/23/12

"They have shut in and ceased the flaring operations at the drill site to pull the drill stem out of the hole. Due to pressure, they expect that to take until late this afternoon (dark) to complete. After that is complete, they will begin caliper logging (wireline surveying*) of formation salt as well as cement bond inside the casing. If these activities go according to schedule, they will then enter with a sonar tool to begin the first tests required of the cavern. At this time, it is not know if the cavern has been compromised – these tests will provide initial data to determine the integrity of the cavern.

*What is wireline surveying?

Wireline surveys determine physical properties in and beyond the wall of a borehole by devices attached to a cable, or wireline. Subsurface geologic conditions and engineering characteristics can be derived directly or indirectly from the wide variety of measurable properties available by wireline surveying."

11:30 a.m. Bubbling Monitoring

9/23/12

"Monitoring of the bubbling in the waterways in Bayou Corne and Grand Bayou has been conducted (as is daily) and there were no changes observed at any of the sites."

http://assumptionla.wordpress.com/2012/09/23/1130-a-m-bubbling-monitoring/

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It appears that they have struck gas and it's coming out at about 900 psi!!!!

Thats the pressure,folks.It's takes about 200 t0 400 psi to move a fully loaded hydraulic elevator.

As previously posted, the cavern was entered at approximately 8:45 last night. At that time, no gas was encountered. At 10:00 p.m. last night, they finished drilling the additional 80? and no obstructions or gas were encountered. At 11:00 p.m. gas started to flow from the cavern at 950 psi. DEQ did obtain samples of this gas as well as samples of the cavern fluid. They are currently flaring the gas off.

http://enenews.com/officials-gas-starts-flowing-up-from-salt-cavern-under-sinkhole-hours-after-roof-breached

Sorry Breezy,didn't see your post below mine.

Is it me or are the threads backwards now?

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CONFIRMED: Salt cavern below sinkhole has failed

Sept 25, 2012

"Assumption Parish officials have been advised by DNR [Louisiana Department of Natural Resources] that their exploratory well observers have confirmed that brine cavern #3 has failed. Per Texas Brine’s press release, “[...] The retrieved material does not appear to be consistent with material normally found in brine cavern operations. [...] This statement confirms the suspicions of parish officials: Texas Brine Oxy Cavern #3 had failed.

Given the confirmation of the failure of Texas Brine’s cavern, the parish will continue to look to Texas Brine for accountability and evacuee assistance."

http://enenews.com/new-aerial-footage-sinkhole-shows-considerable-video

http://assumptionla.wordpress.com/2012/09/25/930-a-m-assumption-officials-respond-to-texas-brines-press-release/

http://enenews.com/confirmed-salt-cavern-below-sinkhole-has-failed

Seismic activity near cavern linked to sinkhole

Sept 25, 2012

By David J. Mitchell

River Parishes bureau

"Regional seismic activity damaged an abandoned Texas Brine Co. salt cavern that has been suspected to be the cause of a 4-acre sinkhole in Assumption Parish, company officials said late Monday.

A tool used to measure the depth of the underground cavern found its floor is 1,300 feet shallower than when it was abandoned in mid 2011, indicating “some type of dense material has fallen to the bottom of the cavern,” Texas Brine officials said in a statement.

The sinkhole was found on Aug. 3 in swampland located between Bayou Corne and Grand Bayou and south La. 70 South and forced the evacuation of residents in 150 households nearby.

Under orders from the Louisiana Department of Natural Resources, Texas Brine hired a contractor to drill an investigatory well for more than a month to peer inside the cavern.

DNR scientists have said they suspected that the cavern failed, leaked its brine contents and caused the sinkhole, which is about 475 feet wide and about 200 feet from the salt cavern."

Read the rest of the story here..

http://theadvocate.com/home/3981123-77/seismic-activity-near-cavern-linked

Dutchsince has started an petition for the people of that parish...

and how long have they known this...??? or at least suspected it...?? perhaps that's why they didn't want to meet w/the people there...

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