After the initial interview, weekend long interview with a group of other prospective employees. The interview is like the job - long and grueling but interesting. It starts at 5 or 6 in the afternoon and you do some team competitions (we built a catapult out of straws and rubber bands and then a tower out of pieces of paper) and then you do partner presentations about the different segments of the company. You will be assigned partners and topics for these presentations beforehand. For us these went on until about 3 am, although other people I have talked to finished much earlier. The next day is up at 6 am and off to a field site, where you will see a rig and get acquainted to what the process is like. That will go all day until maybe 5 in the afternoon, and then back to the meeting room for a presentation about the job and one on one interviews with the recruiters. After that is group dinner then you're home free. The big thing is to stay awake and alert throughout the whole weekend. If you made it past the initial interview you are probably qualified for the job, so now they want to see if you can keep up with the pace of the job, i.e. sleep for three hours and still be focused and attentive to what is going on.

1st round interview included short technical question, and telling about myself and the projects I worked on. Not difficult/or hard, but just need to explain well enough to tell the logic process