The Three Ps of Fishing
If we stay in the drilling/well servicing business long enough, we are going to have a fishing job. It is an inevitable and unfortunate fact of life for us. A fishing job can take all the profit out of a well if it happens while you are drilling.
There are three things to consider when it comes to fishing - prevention, planning and preparation, in that order. The cheapest, fastest and easiest fishing job is the one you don't have to do.
By prevention, I mean: Are your slips, elevators, clamps, drill lines, etc. in good enough shape to support the pipe you are running? Are your crews well trained enough to handle the pipe safely without dropping it, or worse yet, hurting themselves? A worn-out hoisting plug or a kelly saver sub that makes up with one-eighth of a round, or raggedy set of elevators that you think you can get “just one more job” out of, might cost you more than the replacement. This doesn't mean that everything has to be chrome-plated-new, but it has to be able to stand the loads that you might put on it.
The next thing to help in the successful completion of a fishing job is planning. Do you have a taper tap, or preferably, a box tap to pick up your drill pipe if you should drop it? It won't do much good if it's back at the shop; it needs to be at the rig with the correct subs to run it in the hole when you have a problem. Drill pipe left in the hole while you round up the basic tools has a way of “growing roots.” The sooner you can get back on the fish, the better your chances of recovery. A box tap is better than a taper tap because you can circulate the hole as needed. If you have the room to run one, it is the better tool.
Also, if you have an unknown fish, it is a good idea to have an impression block available to ascertain what exactly you are fishing for before you make wasted runs and possibly damage the top of the fish beyond recovery. Your service truck should be equipped with a rope spear to recover submersible pump cable as well as tools to recover the common sizes of column pipe.
If you are faced with a fishing job, adequate preparation will simplify the operation and bring it to a quicker, more successful conclusion. If it is an involved fishing job, you might give a little thought to what you will run in the hole after the tool you have just spent all night building tools. If you plan and prepare for successive attempts to retrieve the fish, you won't be stuck with, “Well, it's noon and I can't figure out what to run next,” and waste a half-day.
When all else fails, don't hesitate to call in the experts. They know their business, which is to get you back on bottom, drilling as soon as possible.
On a side note: Thanks for all the letters and e-mails about the piece I did about hurricanes. I know it wasn't about drilling, but living in the Southeast, it seems the “hits just keep on coming,” so the weather has been on all our minds lately. After I sent that piece in, we got a small dose of weather from Tammy. No great damage, but 26 inches of rain in three days. Water was 2 feet over the road in places.
Funny thing: Dave Williamson from New Mexico arrived one day before the storm. He got to see more water than he had seen in his whole life, and we didn't get much drilling done the first few days. His dad, John, asked me if he was starting to rust! “Naw,” I said, “I sprayed him down with WD-40, but his webbed feet are coming in nicely!”
It finally dried out and we got a lot of mud rotary drilling done, which is what Dave came to see. I hope his folks forgive me for all the bad habits I displayed. ND