oilman | 10 months ago | on: Widespread power outage in Spain and Portugal
oilman's comments
oilman | 10 months ago | on: Widespread power outage in Spain and Portugal
A full grid black start is orders of magnitude more complex. You’re not just reviving one machine — you’re trying to bring back entire islands of infrastructure, synchronize them perfectly, and pray nothing trips out along the way. Watching a rig wake up is impressive. Restarting a whole country’s grid is heroic.
oilman | 3 years ago | on: What is a black start of the power grid?
Similar to the article, but at a smaller scale, it takes power to start up one of the ~7MW main generators on an oil rig. During commissioning, a black start test simulates a scenario where all power sources on the rig are exhausted, and the emergency backup systems must be used to bring the rig back to life.
Starting the main generators on an oil rig is no easy feat. It takes a significant amount of power to get these massive machines running, and it's not as simple as pulling a cord like you would with a lawnmower. In normal circumstances, the rig uses tanks of compressed air to start the generators, but during a black start test, these tanks are assumed to be empty.
So, how do you start the main generators in this situation? The answer is with a special emergency hand-cranked air compressor. By cranking (and cranking, and cranking) this compressor, you can generate enough air to start a small air compressor, which in turn is used to pump up the air tank and start the 1.5MW emergency generator. Once the emergency generator is running, it can be used to power the compressors that fill the large tanks needed to start the main generators.
Watching this process unfold is truly a unique experience. To see a massive oil rig slowly come to life, all thanks to one person cranking away at a small air compressor, is truly impressive.
oilman | 5 years ago | on: Work on What Matters
> It’s ok to spend some of your time on snacks to keep yourself motivated between bigger accomplishments, but you have to keep yourself honest about how much time you’re spending on high-impact work versus low-impact work. In senior roles, you’re more likely to self-determine your work and if you’re not deliberately tracking your work, it’s easy to catch yourself doing little to no high-impact work.
In my own personal experience, that boost of actually accomplishing something right now instead of slowly starting the process of impactfully pushing another rock up a hill is very tempting.
Does anyone have any experience or recommendations for effectively tracking your own work and putting yourself in the right headspace to tackle these more long lived impactful tasks? This mental game seems to me to be one of the huge factors that determine outcomes.
I tend to have some challenges with attention at the best of times. My interests tend to run hot and cold. I can make a huge impact and move a project significantly forward when I get into it and hyperfocus on it. But other times managing to focus my attention on a tasks that I know would be high impact is mental torture.
oilman | 5 years ago | on: Moved a server from one building to another with zero downtime
For one project we had large banks of ultracapacitor in a cabinet. Fully charged it was around 1200 VDC. This thing was in the prototyping stage, and we were testing a control system on a Saturday morning.
So we charge it using a large AC/DC converter, fully charged, everything worked beautifully. We start a discharge cycle converting the DC back to AC. Uh oh, it starts pulling way too much current. Flames start to shoot out of the AC/DC converter. Fuck. BANG. Fuse blown.
We assess the damage... the AC/DC unit is totally shot. And someone (me) is going to have to analyze what caused the failure. Otherwise everything with the capacitor cabinet seems okay, but the thing is still charged to 1090 VDC and the fuse is blown. Check with the mechanical engineer that designed the cabinet. Turns out the fuse can't be changed (can't be accessed) while the cabinet is charged and the cabinet can't be discharged because the fuse is blown. Well that isn't good.
The only thing we could do was discharge it into a load bank (think large toaster) by connecting something directly to the copper busbar live at 1090 VDC. So one of the commissioning guys volunteered. He put on some high voltage gloves, stood on a plastic mat, and connected some jumper cables someone had in their car to the bus bar. He stepped back and someone else threw the switch on the load bank and it discharged without incident.
There were some design revisions after that.
oilman | 6 years ago | on: Will the Long-Term Stock Exchange Make a Difference?
oilman | 6 years ago | on: Why Our Postwar “Long Peace” Is Fragile (2018)
oilman | 6 years ago | on: Why Our Postwar “Long Peace” Is Fragile (2018)
I see, Mr. President, that you too are not devoid of a sense of anxiety for the fate of the world understanding, and of what war entails. What would a war give you? You are threatening us with war. But you well know that the very least which you would receive in reply would be that you would experience the same consequences as those which you sent us. And that must be clear to us, people invested with authority, trust, and responsibility. We must not succumb to intoxication and petty passions, regardless of whether elections are impending in this or that country, or not impending. These are all transient things, but if indeed war should break out, then it would not be in our power to stop it, for such is the logic of war. I have participated in two wars and know that war ends when it has rolled through cities and villages, everywhere sowing death and destruction.
I worry that the current nationalist trend that seems to be simultaneously happening in many countries is going to lead down the long path to war. I don't see many leaders today that I think would have the diplomatic resolve to write a letter like this. I feel people are interpreting others actions in the least charitable way which causes all kinds of rifts. The deeper these rifts grow, the more likely we are to see someone ignite the spark of war. I honestly don't know the reasons, or if maybe its just my perception that has changed as I've gotten older.
oilman | 7 years ago | on: Mysterious safety-tampering malware infects a second site
I was involved in a project a few years ago delivering a series of monitoring systems running Windows XP to a brand new 700 million dollar oil rig. This was at the request of the client, they had software they needed that would only run on Windows XP. They had a fit when we had trouble sourcing Windows XP licenses. The expectation is that these systems will have a 20 - 30 year life.
It used to be that keeping every air gapped was enough, but organizations want easier monitoring, so more systems are being networked in an ad-hoc way without a lot of thought about security.
I expect we are going to see more things like this happening in the future until we start taking security in systems / embedded space more seriously. And even then there will be exploits of older systems for years afterwords since the replacement cycle is so long.
I wonder what a secure embedded system even looks like when I think about it. The environment isn't suitable to the kind of continuous patching that is done in the web world, but exploits will be found and dependencies will need to be updated. How do you square keeping things up to date with stringent testing requirements in systems that can kill people. Many of these systems / plants are unique, there is only one plant like it in the world, so testing becomes very hard.
oilman | 7 years ago | on: Norway Is Walking Away from Billions of Barrels of Oil
I think its the notion that all the provinces are competing against each other, and that under any oil program some provinces will win and other lose that really holds us back. No one can see that we can all win by collectively working together. It doesn't help at all that there are now moneyed corporate interested involved that are not interested in seeing any changes take place.
oilman | 7 years ago | on: Why American Construction Costs Are So High
oilman | 11 years ago | on: Ask HN: How do you deal with professional jealousy and getting older?
oilman | 11 years ago | on: Can you make “big money” as an employee in software?
The systems we create are complicated and require automation (PLCs, embedded systems, PCs) to function, so the company requires programmers. The money is fantastic for two reasons: they have a really hard time finding people and money for oil companies shoots out of the ground (most of the time).
The work is different from most systems someone would deal with at a startup. The systems range in age from new to 20 years old. Object oriented is a new and scary thing. I write and debug a lot of pascal and C. Also do a lot of sysadmin work on ancient systems, token ring networks etc.
The biggest difference however is work environment. Most rigs have an absolutely awful (think dial up) satellite internet connection, so there is no remote work. Everything gets done on site. This leads to a lot of travel, which is where you make the big money if you are willing to do it. The work environment is a lot different from a startup: Folding chairs and a table in the corner of a room if you are lucky, sitting on the floor if not. You get to see some interesting and scary parts of the world, police escorts from the airport, body guards on the way to the rig in really bad places, which can be very isolating as well as traveling for months at a time.