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that's exactly what's going on.
originally posted by: watchitburn
I thought we were coordinating with OPEC to keep oil low to put pressure on Russia?
originally posted by: Masterjaden
a reply to: Carcharadon
Yeah, I'm a mud engineer, people are nucking futs if they think fracking is hazardous to the environment. The wells are sealed with cemented casing and the fracking happens WAY below the water table. There's practically zero chance that fracking will result in oil or other contaminants in the water table. Naturally occurring contamination is WAY more common than anything remotely from fracking.
I went back and finished reading your whole post.
You forgot to include that fracking does not occur in the vertical. A well (west texas) is drilled to anywhere from 5000 to 9000 ft and then it is diverted from the vertical and gradually angled until is is horizontal to the surface.
You'll drill surface which is drilled with fresh water based mud, then once you get past the water table, you'll switch to a brine based mud. They do this because there are natural salt formations that you'll pass through that fresh water would washout because the salt dissolves in the fresh water, so you use a saturated brine, or a partially saturated brine to avoid washout.
At both surface and intermediate, you set casing typically and cement it in place, sealing off the hole from the formation.
Then you drill the final hole, called production, that is maybe 6-8" and you run production casing. Then the fracking tool is sent down with has directional explosive charges which are designed to pierce the rock and allow the oil in the shale to seep back into the holes that were in the fracking casing. The shale in the rock prevents the oil from going anywhere outside of the formation.
Jaden
originally posted by: buckwhizzle
This is one of my pet peeve conspiracy theories.I have no evidence,but I believe there is no such thing as peak oil.I think you just have to drill down farther,and I think the oil companies know that.Either way,if this gets proven or dis-proven,will turn out to be the big shake-up.my 2cents.
originally posted by: dfnj2015
a reply to: watchitburn
Well, they deserve it. They are obviously a threat to me living in New Jersey. Those stupid Yemens! I hate em! That last thing I need is to see Yemen tanks rolling down my street!
originally posted by: Carcharadon
originally posted by: dfnj2015
originally posted by: Carcharadon
originally posted by: Painterz
When we were getting fracking into the UK for the first time, they told us it was worth doing if oil was $80 to $90 a barrel.
There's a lot of variables there though, I expect cost of extraction is much higher in the UK because we have lots of EU environmental protection laws that prevent the fracking companies from just wrecking the environments around where they drill and dumping poisons into the ground water.
But hey, there's a reason big oil donated money to make Brexit happen, bye bye EU environmental protections, hello cheaper fracking and polluted groundwater.
You quite obviously have no idea what fracking is, when it occurs or how it is done.
Do you ever get tired of highlighting your complete and total lack of knowledge on everything you comment on?
Since you seem to be an expert, and it's not public knowledge, what chemical mixtures are used for doing the fracking? Are the chemicals safe to drink?
I do know about it. I probably know more about fracking and drilling for oil than everyone on this site combined.
Only in very rare cases does fracking chemicals end up in the water table. Or if companys defy the regulations.
Say you drill a 3000 meter hole. To begin with you drill surface hole which is done with a drill bit 3-4 times the size of the bit you will use for the main hole. Surface hole is drilled past the water table.
Now the water table can vary greatly. I've does surface holes that were 150 meters and I've done surface holes that were over a 1000. It all depends on the formations and where you are at. If close to mountains it will be deeper, if in low lying areas it will be shallower.
Now the purpose of Surface hole is explicitly to get past the water table. For this you use a drilling mud that is water based and contains sawdust and Bentonite.
Once you drill past the water table (anywhere from 20 to 50 meters past) you stop drilling, pull the pipe out of the hole. Once that is done you run casing that is slightly smaller than the hole you just drilled (which can be anywhere from 9 3/4 inches to 12 7/8ths or even bigger but that's the average where j am). Once you've run your casing down and touched bottom you then pump cement down the well. This has 2 reasons; ) it stabilizes the bottom of the casing string and seals it off.
Once that process is done you run your pipe in the hole(different, smaller pipe. Let's say 4 1/4 inch pipe) and resume drilling with a smaller bit.
Now, this time you drill to your TD(total depth), pull out the pipe, run casing and cement it off like the surface hole casing.
Now this is where the fracking will come in. During drilling operations you are constantly taking down hole samples from the cuttings that are brought to surface by the drilling fluids (most companys in Canada use Brine these days. ) at 5/10/15 meter intervals, the interval depends wholly on what the Geologist wants and the intervals can vary depending in what zones you are going through.
These samples will tell the Geologists and the Oil Company what depths contain Oil or Gas.
In this case with a hypothetical 3000 meter well we will go with 2275 meters and 2980 meters (a long with a 500 meter surface hole) for the depth of the oil/gas zone.
So a service rig will come in run and run tools downhill to the depths that the oil company required, in this case 2980 and 2275 respectively.
The tool they run down is a massive, heavy cylinder with a number of explosive charges in it. Once they get to the required depth they set it off and it blows holes through the casing and punches into the bedrock. This allows the oil/gas to seep or hopefully gush into the casing.
Service rig pulls their equpment out installs (or re-installs the pumpjack and closes it in so that pressure readings can be taken and the well can start producing.
At no point should any fracking chemicals or waste be anywhere within 1775 meters of the water table. And if that does happen it is horrible but that is something that lays at the feet of regulatory boards and the government.
There's absolutely nothing wrong with fracking and the impact on the water table is absolutely non-existent IF all the rules and procedures are followed and things are done properly.
.
originally posted by: Painterz
originally posted by: Carcharadon
originally posted by: dfnj2015
originally posted by: Carcharadon
originally posted by: Painterz
When we were getting fracking into the UK for the first time, they told us it was worth doing if oil was $80 to $90 a barrel.
There's a lot of variables there though, I expect cost of extraction is much higher in the UK because we have lots of EU environmental protection laws that prevent the fracking companies from just wrecking the environments around where they drill and dumping poisons into the ground water.
But hey, there's a reason big oil donated money to make Brexit happen, bye bye EU environmental protections, hello cheaper fracking and polluted groundwater.
You quite obviously have no idea what fracking is, when it occurs or how it is done.
Do you ever get tired of highlighting your complete and total lack of knowledge on everything you comment on?
Since you seem to be an expert, and it's not public knowledge, what chemical mixtures are used for doing the fracking? Are the chemicals safe to drink?
I do know about it. I probably know more about fracking and drilling for oil than everyone on this site combined.
Only in very rare cases does fracking chemicals end up in the water table. Or if companys defy the regulations.
Say you drill a 3000 meter hole. To begin with you drill surface hole which is done with a drill bit 3-4 times the size of the bit you will use for the main hole. Surface hole is drilled past the water table.
Now the water table can vary greatly. I've does surface holes that were 150 meters and I've done surface holes that were over a 1000. It all depends on the formations and where you are at. If close to mountains it will be deeper, if in low lying areas it will be shallower.
Now the purpose of Surface hole is explicitly to get past the water table. For this you use a drilling mud that is water based and contains sawdust and Bentonite.
Once you drill past the water table (anywhere from 20 to 50 meters past) you stop drilling, pull the pipe out of the hole. Once that is done you run casing that is slightly smaller than the hole you just drilled (which can be anywhere from 9 3/4 inches to 12 7/8ths or even bigger but that's the average where j am). Once you've run your casing down and touched bottom you then pump cement down the well. This has 2 reasons; ) it stabilizes the bottom of the casing string and seals it off.
Once that process is done you run your pipe in the hole(different, smaller pipe. Let's say 4 1/4 inch pipe) and resume drilling with a smaller bit.
Now, this time you drill to your TD(total depth), pull out the pipe, run casing and cement it off like the surface hole casing.
Now this is where the fracking will come in. During drilling operations you are constantly taking down hole samples from the cuttings that are brought to surface by the drilling fluids (most companys in Canada use Brine these days. ) at 5/10/15 meter intervals, the interval depends wholly on what the Geologist wants and the intervals can vary depending in what zones you are going through.
These samples will tell the Geologists and the Oil Company what depths contain Oil or Gas.
In this case with a hypothetical 3000 meter well we will go with 2275 meters and 2980 meters (a long with a 500 meter surface hole) for the depth of the oil/gas zone.
So a service rig will come in run and run tools downhill to the depths that the oil company required, in this case 2980 and 2275 respectively.
The tool they run down is a massive, heavy cylinder with a number of explosive charges in it. Once they get to the required depth they set it off and it blows holes through the casing and punches into the bedrock. This allows the oil/gas to seep or hopefully gush into the casing.
Service rig pulls their equpment out installs (or re-installs the pumpjack and closes it in so that pressure readings can be taken and the well can start producing.
At no point should any fracking chemicals or waste be anywhere within 1775 meters of the water table. And if that does happen it is horrible but that is something that lays at the feet of regulatory boards and the government.
There's absolutely nothing wrong with fracking and the impact on the water table is absolutely non-existent IF all the rules and procedures are followed and things are done properly.
.
Oh man, just as well the oil industry is always totally observant of all rules and safety regulations, and never has accidents where they've cut corners to increase profitability or something.
Yeah, you're right, I totally trust big oil to do what's right all the time.