I have finally decided to just write this offline and post it later, so that I can do it in my own time and catch up with the week. I cannot believe another week has flown by…
Starting again where I left off:
Andrey, the Schlumberger engineer, eventually came round with the data and after a few changes we signed the acceptance papers and I made my way back to Basecamp. Unfortunately it was dinner time so I didn’t eat again, but I had a collection of fruit in my room so that was fine. I got back in time to catch the second half of Touching the void, a documentary film about a couple of glacier climbers who got stuck and the extreme survival of one of them who pulled himself out of a crevasse and down the mountain with a broken leg! Amazing…and quite moving too.
The next morning, Alexey noticed that some data was missing from the logs…eek! Basically I asked SLB for the wrong logging interval and the engineer didn’t double-check it (I misread the depth because the program had changed). We had all the reservoir data though so it wasn’t too much of a problem but it was a bit of a wake-up call for me to pay more attention to the job. I find it quite tough to just drop in on a well without knowing it from drilling, so it requires a lot more concentration to get it right. Gilles asked for a small AAR (after action review) document on this so that this kind of mistake could be avoided in the future, also from the SLB side (they didn’t quite follow standard procedure in this case).
After discussing this issue with Alexey, I left for pad 3 to help Simon with his PEX-XPT job. Incidentally, communication with Alexey has improved a lot since my second shift-it was already a lot better last shift and this time I found it very helpful to be sitting in the same office as him on that level…I could just hit him over the head with a log if he started annoying me :-)
After pad 50, which was very well maintained with sand all over, pad 3 was a bit of a struggle as it was very muddy with large ruts. I decided to not even try getting in and parked at the entrance by the security cabin. It was pretty difficult walking over to the geologist’s caravan but I made it without letting mud in over the top of my boots. I did get stuck on the way to the SLB unit though and Denis-the-DSV had to rescue me :-)

Starting again where I left off:
Andrey, the Schlumberger engineer, eventually came round with the data and after a few changes we signed the acceptance papers and I made my way back to Basecamp. Unfortunately it was dinner time so I didn’t eat again, but I had a collection of fruit in my room so that was fine. I got back in time to catch the second half of Touching the void, a documentary film about a couple of glacier climbers who got stuck and the extreme survival of one of them who pulled himself out of a crevasse and down the mountain with a broken leg! Amazing…and quite moving too.
The next morning, Alexey noticed that some data was missing from the logs…eek! Basically I asked SLB for the wrong logging interval and the engineer didn’t double-check it (I misread the depth because the program had changed). We had all the reservoir data though so it wasn’t too much of a problem but it was a bit of a wake-up call for me to pay more attention to the job. I find it quite tough to just drop in on a well without knowing it from drilling, so it requires a lot more concentration to get it right. Gilles asked for a small AAR (after action review) document on this so that this kind of mistake could be avoided in the future, also from the SLB side (they didn’t quite follow standard procedure in this case).
After discussing this issue with Alexey, I left for pad 3 to help Simon with his PEX-XPT job. Incidentally, communication with Alexey has improved a lot since my second shift-it was already a lot better last shift and this time I found it very helpful to be sitting in the same office as him on that level…I could just hit him over the head with a log if he started annoying me :-)
After pad 50, which was very well maintained with sand all over, pad 3 was a bit of a struggle as it was very muddy with large ruts. I decided to not even try getting in and parked at the entrance by the security cabin. It was pretty difficult walking over to the geologist’s caravan but I made it without letting mud in over the top of my boots. I did get stuck on the way to the SLB unit though and Denis-the-DSV had to rescue me :-)
The engineer was Andrey again and after discussing the depth problem from yesterday we got on with the job. We went through all the XPT procedure and made sure we were all clear about what we needed from each other. For this XPT job, another engineer, Serge, was there and although he hadn’t done XPT before he has a lot of experience with pressure testing (just slightly different tools) so it was really interesting talking to him.
Denis stayed in the unit with us which was nice; in this well the drillers decided not to do a wiper trip to clean the hole before logging, because there was a power shutdown planned for the next day and they wanted to save time and finish work on the well before it. Bad idea…we couldn't get into the hole so had to pull out and they had to do the wiper trip anyway…obviously this meant staying in pad 3 for me, which was nice as I could catch up with people and of course the cleaners made up my bed nicely straight away (the Deutag magic).
Next day, we started over again and this time, after a couple of small struggles, we managed to get in and log the hole. At this stage Andrey and I were starting to get the giggles at it seemed that we were having a bit of a Groundhog Day-especially when it turned out that another tool needed calibrating!
After that everything went smoothly with the PEX and XPT, although we were a bit worried before the job about getting stuck with the XPT tool due to the poor hole conditions. We applied all the new procedure a la lettre though and did not have any problems as we took the XPT measurements, except with the penultimate point where the cable tension got really high- almost to snapping point. There were an amazing 20 seconds in the logging cabin where no-one breathed as the operator tried to free the cable...luckily he managed and a lot of pale, shaky-kneed people heaved a sigh of relief!
Because Serge had never done XPT and Andrey didn't have that much experience they were asking me about testing rates and volumes, which was great fun :-) obvioulsy I made it clear the responsibility was theirs but they basically let me pick all the sampling volumes and rates for the points :-) with a bit of guidance on the tight formations (ie the ones where liquid doesn't flow very easily or at all). Basically what we measure is the formation pressure, by sucking out liquid from it and waiting for the pressure to stabilise again; the time this takes depends on how well fluid can move through the formation and therefore the amount taken and the speed at which you take it can really influence how well the pressure stabilises.
Anyway, another XPT job happily finished and we went back to the work unit to wait for the data from SLB. Simon had been bringing me food throughout the day, which was nice, as I didn't have time to leave the logging unit at mealtimes.
Denis stayed in the unit with us which was nice; in this well the drillers decided not to do a wiper trip to clean the hole before logging, because there was a power shutdown planned for the next day and they wanted to save time and finish work on the well before it. Bad idea…we couldn't get into the hole so had to pull out and they had to do the wiper trip anyway…obviously this meant staying in pad 3 for me, which was nice as I could catch up with people and of course the cleaners made up my bed nicely straight away (the Deutag magic).
Next day, we started over again and this time, after a couple of small struggles, we managed to get in and log the hole. At this stage Andrey and I were starting to get the giggles at it seemed that we were having a bit of a Groundhog Day-especially when it turned out that another tool needed calibrating!
After that everything went smoothly with the PEX and XPT, although we were a bit worried before the job about getting stuck with the XPT tool due to the poor hole conditions. We applied all the new procedure a la lettre though and did not have any problems as we took the XPT measurements, except with the penultimate point where the cable tension got really high- almost to snapping point. There were an amazing 20 seconds in the logging cabin where no-one breathed as the operator tried to free the cable...luckily he managed and a lot of pale, shaky-kneed people heaved a sigh of relief!
Because Serge had never done XPT and Andrey didn't have that much experience they were asking me about testing rates and volumes, which was great fun :-) obvioulsy I made it clear the responsibility was theirs but they basically let me pick all the sampling volumes and rates for the points :-) with a bit of guidance on the tight formations (ie the ones where liquid doesn't flow very easily or at all). Basically what we measure is the formation pressure, by sucking out liquid from it and waiting for the pressure to stabilise again; the time this takes depends on how well fluid can move through the formation and therefore the amount taken and the speed at which you take it can really influence how well the pressure stabilises.
Anyway, another XPT job happily finished and we went back to the work unit to wait for the data from SLB. Simon had been bringing me food throughout the day, which was nice, as I didn't have time to leave the logging unit at mealtimes.
I decided to go to the car to get my book and some bits from my bag, to help with the wait for the data. Unfortunately on the way back the digger was working in the only path I knew so I had to work out another route back to the unit. My friend the moustachied digger driver(for it was he) saw me waiting and pointed me towards a dry-ish path which I followed happily until it was time to cut across to the unit. And then...it all went terribly wrong! after 2 steps I ended up completely bogged down with mud to the top of my boots :-( luckily for me, the digger was still nearby and the driver staged a rescue worthy of a princess :-) and I eventually made it back safely to the work unit.
I found Pasha near the DSV's office as he is living in pad 3 while rig 4 moves, so spent a bit of time relaxing with a nice cup of tea and ice cream :-) then back to the unit to wish Simon a happy birthday at midnight! Ivan had brought a cake back from Salym village and we even had birthday candles which were fun to light. After enjoying a slice of cake I sent the boys to bed as it seemed pointless for all of us to stay up waiting for data-especially not Birthday Boy.
The data eventually came, and after sending the boys back a few times, and an interesting conversation with Andrey (he is only 2 weeks older than me, a geologist/geophysicist and has played the piano as long as I played the violin, also in a music school, and also wants to go electric so we were discussing the merits of electric violins/pianos and how he wants to get a mixing set-up) I finally got to bed at 5:30 am!!
After a few hours' sleep, I explained to Simon how to do a full-hole CBL and left for Basecamp after lunch. The main road back has a lot of potholes and I am getting a little bit fed up with that section so I tried singing at the top of my voice to make it less boring...and make sure I stayed awake. Which luckily worked.
The data eventually came, and after sending the boys back a few times, and an interesting conversation with Andrey (he is only 2 weeks older than me, a geologist/geophysicist and has played the piano as long as I played the violin, also in a music school, and also wants to go electric so we were discussing the merits of electric violins/pianos and how he wants to get a mixing set-up) I finally got to bed at 5:30 am!!
After a few hours' sleep, I explained to Simon how to do a full-hole CBL and left for Basecamp after lunch. The main road back has a lot of potholes and I am getting a little bit fed up with that section so I tried singing at the top of my voice to make it less boring...and make sure I stayed awake. Which luckily worked.