MKTEF
07-08-2007, 08:05 AM
Wednesday lunch i took our drilling rigg with me and went to a worksite some hours away.(had a assistant with me; landowner):cool:
The main purpose was to gain and maintain the knowledge on the rigg and its use.
We planned to drill two holes with the rigg:
- One water well ap 180' deep.(60m) 6,5"
- One energy hole ap 360' deep.(120m) 6,5"
We ended up with the water well ap 219' (73m) and the energy hole ap 390'.(130m)
We spent the wednesday evening preparing the rigg and the holes.
Thursday we drilled the water well. Some problems though, our 6" DTH hammer has been to long without maintenance and use, so the air valve inside was corroded.
We got 18' down before it stopped completely and we had to get it up.
A complete overhaul and some polishing of the valve solved the problem.
A not so funny job, because theese hammers is a hell to disassemble. They get screwed tighter and tighter together when u drill with them.
We ended up with a weld on the outside to get our hydraulic pipe-wrench to get enough friction to unscrew it.(the wrench hangs down to the left on 2.pic)
And this wrench is a beast, it is hydraulic and squises the pipe flat if u use it in the wrong spot.:eek:
The drilling went good after that.
Friday we drilled the energy hole, that one also went well.(we used foam from 300' to be on the secure side)
Untill we should take the pipes up of the hole.
The second pipe was so corroded it locked completely to the short odex extension at the top.(the short pipe from the gear and through the housing with the 90 degree pipe on the 2.pic.)
Well, we used the rigg, the pipe wrench, sledge hammer and heating torch.
We ended up with dissasembling the short odex extension on top.
Grinding it loose and using the rigg and the wrench. This one loosened easily because it gets oil in the threads and is not corroding because it is welded in place.
Then the main pipe out of the gearbox was to short to reach the pipes.:mad:
Then we had 40 pipes that had to be hoisted up with a chain and dissasembled with the wrench.:(
We ended up with 24 hours delay, and i got home on saturday instead of friday.(my wife was not so happy.)
I posted a video on youtube for u guy's:
http://www.youtube.com/watch?v=ou9vT0uOGWE
It shows the rigg drilling, and a spooling sequence to get up any extra rocks.
Here is a couple of pictures:
The pictures is taken on friday when the weather was good, on thursday it rained.
The last one shows our atlas copco XRVS 466 compressor. U need both pressure and volum on this type of work.
The goals where reached; holes is there and we increased the knowledge a lot.
And i am exausted, the pipes weights ap 60kg/132lb each, and is handled manualy to and from the storage racks.
The main purpose was to gain and maintain the knowledge on the rigg and its use.
We planned to drill two holes with the rigg:
- One water well ap 180' deep.(60m) 6,5"
- One energy hole ap 360' deep.(120m) 6,5"
We ended up with the water well ap 219' (73m) and the energy hole ap 390'.(130m)
We spent the wednesday evening preparing the rigg and the holes.
Thursday we drilled the water well. Some problems though, our 6" DTH hammer has been to long without maintenance and use, so the air valve inside was corroded.
We got 18' down before it stopped completely and we had to get it up.
A complete overhaul and some polishing of the valve solved the problem.
A not so funny job, because theese hammers is a hell to disassemble. They get screwed tighter and tighter together when u drill with them.
We ended up with a weld on the outside to get our hydraulic pipe-wrench to get enough friction to unscrew it.(the wrench hangs down to the left on 2.pic)
And this wrench is a beast, it is hydraulic and squises the pipe flat if u use it in the wrong spot.:eek:
The drilling went good after that.
Friday we drilled the energy hole, that one also went well.(we used foam from 300' to be on the secure side)
Untill we should take the pipes up of the hole.
The second pipe was so corroded it locked completely to the short odex extension at the top.(the short pipe from the gear and through the housing with the 90 degree pipe on the 2.pic.)
Well, we used the rigg, the pipe wrench, sledge hammer and heating torch.
We ended up with dissasembling the short odex extension on top.
Grinding it loose and using the rigg and the wrench. This one loosened easily because it gets oil in the threads and is not corroding because it is welded in place.
Then the main pipe out of the gearbox was to short to reach the pipes.:mad:
Then we had 40 pipes that had to be hoisted up with a chain and dissasembled with the wrench.:(
We ended up with 24 hours delay, and i got home on saturday instead of friday.(my wife was not so happy.)
I posted a video on youtube for u guy's:
http://www.youtube.com/watch?v=ou9vT0uOGWE
It shows the rigg drilling, and a spooling sequence to get up any extra rocks.
Here is a couple of pictures:
The pictures is taken on friday when the weather was good, on thursday it rained.
The last one shows our atlas copco XRVS 466 compressor. U need both pressure and volum on this type of work.
The goals where reached; holes is there and we increased the knowledge a lot.
And i am exausted, the pipes weights ap 60kg/132lb each, and is handled manualy to and from the storage racks.