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Started By
Message
re: Sad news --- Oklahoma rig explosion leaves 5 missing
Posted on 1/23/18 at 8:14 am to deltaland
Posted on 1/23/18 at 8:14 am to deltaland
quote:
I'm not really well versed on drilling rigs but it seems that automatic sensors could be made to help monitor this type of thing that would trigger an alarm or automatic shutdown
They already exist.
0
Posted on 1/23/18 at 8:18 am to deltaland
quote:most modern rigs do have what you speak of - problem is that you still need human eyes on it - it's too important. Mud/fluid can do funny things to the technology monitor/sensors in really small volumes.
I'm not really well versed on drilling rigs but it seems that automatic sensors could be made to help monitor this type of thing that would trigger an alarm or automatic shutdo
Posted on 1/23/18 at 8:18 am to 10MTNTiger
quote:
Can you all explain what appears to have happened in layman’s terms? Thanks.
They pulled all the pipe out of the hole and closed the blind rams.
The blinds are the BOP(blowout preventer) with 2 blocks to seal the hole.
A gas bubble formed in the well and reached the blind rams. a very tiny bubble of gas expands as it gets close to the surface so that it gets much bigger.
When they opened the blind rams the gas rushed out an a spark ignited it. Thats what I gathered.
Posted on 1/23/18 at 8:24 am to redstick13
quote:
Driller wasn't monitoring his displacement on the trip out then. Also they should have opened the choke line to check for flow before opening the blinds.
This. I know they have a gauge on the well. They should have checked the pressure.
But thats what happens when these companies are hiring anyone and everyone. Some dont have a clue whats going on. I did snubbing/ HWO so we always had a person on the trip tank filling out the sheet every 10 joints.
10 strands of 3.5" pipe is 1.5 barrels in a 30 barrel tank.
Im either going to get back into snubbing/HWO or end up on a drilling rig hopefully. If I have my choice its the former.
Posted on 1/23/18 at 8:25 am to deltaland
quote:
I'm not really well versed on drilling rigs but it seems that automatic sensors could be made to help monitor this type of thing that would trigger an alarm or automatic shutdown
Alarms are constantly going off on a rig floor and sensors do exist but making sure the well is displaced correctly still requires human interaction. If the rig starts filling the well automatically it would create mass confusion. Sensors can give false readings and a multitude of things can be taking place that requires interpretation to react accordingly.
A rig floor is already a chaotic place and trying to interpret what the well is doing can become confusing without the rig doing things automatically.
This post was edited on 1/23/18 at 8:31 am
Posted on 1/23/18 at 8:28 am to redstick13
How do 5 people go missing on a land rig for 24 hours? Even if they're deceased, how are they still missing?
Posted on 1/23/18 at 8:28 am to slackster
quote:
How do 5 people go missing on a land rig for 24 hours? Even if they're deceased, how are they still missing?
Most likely on the rig floor and vaporized.
Posted on 1/23/18 at 8:29 am to slackster
quote:
Even if they're deceased, how are they still missing?
Blowout= Bomb
Posted on 1/23/18 at 8:31 am to redstick13
quote:
Most likely on the rig floor and vaporized.
I don't know of a better way to ask, but are we talking about a situation where bodies are dismembered or where bodies simply don't exist anymore?
Posted on 1/23/18 at 8:36 am to redstick13
quote:
They do exist but making sure the well is displaced correctly still requires human interaction.
While true, I have not seen a rig without flow sensors and PVT alarm anywhere in the world in the last 20 years, I'm sure they are out there but highly doubt one exist today in the USA.
The obligatory quick look at the guage would have prevented this, yet for some reason it APPEARS this did not happen, just bad drilling practice.
Posted on 1/23/18 at 8:39 am to slackster
quote:
I don't know of a better way to ask, but are we talking about a situation where bodies are dismembered or where bodies simply don't exist anymore?
Fires that melt derricks and burn down rigs are pretty hot. I've seen more than a couple of drilling/workover rigs burn down over the years in North Louisiana but two stick out. One was a Cotton Valley rig drilling around Frierson about 2007/2008 that ran across a shallow gas zone while that broke through on them while making a connection. They tried to stab the TIW on but got overwhelmed by the gas flow. Rig was a total loss but luckily no fatalities or injuries.
Second well was in the late 1990's for Sonat in Bienville parish. Snubbing job on a workover rig went wrong and gas got to surface. Killed several people and was a horrible deal. There were some procedural mistakes made that led to that one if I recall.
Posted on 1/23/18 at 8:57 am to slackster
quote:
I don't know of a better way to ask, but are we talking about a situation where bodies are dismembered or where bodies simply don't exist anymore?
If they were around the rotary table they likely don't exist anymore. Anyone in the driller's shack will have been exposed to heat levels far above what is used to cremate a body.
Posted on 1/23/18 at 9:57 am to redstick13
Read a report this morning that 3/5 were Patterson employees, so I'm guessing one of the two was a DD and either MWD or Company Man?
I worked around that area for a while. Those wells were very low pressure and pretty tricky when it came to mud losses, and then ballooning once you were tripping out of the hole. Regardless it seems crazy that no one noticed anything over a ~ 13,000' trip out of the hole. Especially considering it supposedly happened at 9 AM and even if they were short-staffed everyone would have had time to do their morning checks. FYI I'd never seen a rig that wasn't staffed with at least one mud engineer in the area.
Just a terrible situation, I guess the part that bugs me the most is the people that are most likely to die in that scenario(floorhands) are the ones least likely to know anything or have any sort of control in preventing what caused it.
I worked around that area for a while. Those wells were very low pressure and pretty tricky when it came to mud losses, and then ballooning once you were tripping out of the hole. Regardless it seems crazy that no one noticed anything over a ~ 13,000' trip out of the hole. Especially considering it supposedly happened at 9 AM and even if they were short-staffed everyone would have had time to do their morning checks. FYI I'd never seen a rig that wasn't staffed with at least one mud engineer in the area.
Just a terrible situation, I guess the part that bugs me the most is the people that are most likely to die in that scenario(floorhands) are the ones least likely to know anything or have any sort of control in preventing what caused it.
Posted on 1/23/18 at 11:30 am to saintsfan1977
Thanks man. 
Posted on 1/23/18 at 11:31 am to Javzz
quote:
Read a report this morning that 3/5 were Patterson employees, so I'm guessing one of the two was a DD and either MWD or Company Man
Just heard through my company it was 2 rig hands, 1 driller 1 company man and 1 DD. The company man worked for my current company around 2007/2008.
Posted on 1/23/18 at 4:08 pm to redstick13
When there tripping out the trip tank hand should monitor displacement. He should have seen an increase of drilling mud.
Posted on 1/23/18 at 4:15 pm to redstick13
quote:
I've been on the same Flex rig twice when they let a gas influx make it all the way to the rotary table.
Too light on the mud?
Posted on 1/23/18 at 4:16 pm to cave canem
quote:
I have not seen a rig without flow sensors and PVT alarm anywhere in the world in the last 20 years, I'm sure they are out there but highly doubt one exist today in the USA.
Oh, yes they do.
Posted on 1/23/18 at 4:18 pm to saintsfan1977
quote:
When they opened the blind rams the gas rushed out an a spark ignited it. Thats what I gathered.
Why in the name of all that is good and holy would they open the blinds if they knew there was pressure at surface? Wouldn't you try to bleed off on the choke?
Posted on 1/23/18 at 4:19 pm to cave canem
quote:
STFU worm
Prolly hasn't found the key to the V door yet.
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