Busta,
I got out of TAMU in 1986 w/ PetE degree and I'm not sure there was a worse year ever in the Oil Patch, certainly not since. EXTREMELY few of my fellow grads got to do what we all wanted; to become a Drilling/Reservoir/Production Engineer for a Major. Most of us knocked around with Service Companies for years, waiting on getting on with a Major. It seems like 4of 10 got on as MWD Engineers for some reason (was fairly new field back then); I know many of them still; the ones that stayed with Service Companies are now running them.
Using the field as a staging area to get to the position you really want can be very good or very BAD. Have to mimic DrillerNic here and say look at whether rotation/on call work is going to fit your life for the next 5-10 years.
The question you need to ask is: where do you want to be in 20 years?
Do you want to be in a top Management/Director position? The fastest path to the top is to stay right where you are. With your degree and some focus, you will move to the top much quicker in a Service Company; especially a HallCO or Schlumberger size company that looks for people like you to promote. The downside is you will have to do the rotation/on call deal for 5-10 years most likely. Some people hate it, some love it.
Do you really, really enjoy Engineering and want to have an office job that occasionally takes you into the field?? Then by all means try to get on with a Major or large Independent as Engineer; can't imagine it would be too hard right now. You also could get on at any EPC doing design work for the Operators; KBR, Foster-Wheeler, Bechtel, etc. all can provide either permanent or contract engineering positions if you don't want to get locked into only the OilPatch. They are always hiring young engineers.
As far as Sales, it is what I have done for the last 25 years after I finally had enough of all the joys of roughnecking. I took a job in Engineered Sales Downtown Houston selling large API pumps into refineries and such. It springboarded me into a great career being the Sales arm of manufacturing companies; still do it and love it. It would be a very easy transition for you to get into Technical Sales with your degree and experience, however, there are a lot of misconceptions about Sales.
You do not need a "Sales type personality" to be very successful. Please don't get into Sales unless you intend to be just as dedicated, knowledgeable, organized, and passionate as a brain surgeon. Engineered Sales is not about playing golf twice a week, scamming expense reports and telling jokes at happy hour. It is the ultimate performance based position and if you can't handle stress and rejection stay away.
I must say Sales may provide the most exposure to your industry however, as you are the contact point to all your company's customers, competitors, and internals. I feel you do get to see a much bigger picture in Sales, but thats just me.
SOrry for going so long, but one more point on what you are doing now. The Oil Business is as unique as it is volatile. You can definitely get pigeon-holed into a position that has no usefulness in another industry, other than basic Engineering/operations skills. How many companies use MWD's outside of the oilfield?? Make sure you get as much exposure as you can to the entire array available at Halliburton; move into fracking, cementing, wireline, etc. operations if you can.
You will do fine as long as you keep asking the questions you are asking.