Drilling rig drill pipe

Drill stems must be designed to transfer drilling torque for combined lengths that often exceed several miles down into the , and also must be able to resist pressure differentials between inside and outside (or vice versa), and have sufficient strength to suspend the total weight of deeper components. For deep wells this requires tempered steel tubes that are expensive, and owners spend considerable efforts to reuse them after finishing a well. [pdf]

Drilling rig bit trip

Drill bits wear and tear like most any other piece of equipment. Once a bit becomes too worn to drill at an adequate rate or make a full-gauge hole, or if the bearings are thought to be near failure, a trip is undertaken to replace the bit. A trip is not considered a bit trip when the purpose of replacing the bit is to change sizes. This is only done when the crew "sets surface, intermediate or longstring. OverviewTripping pipe (or "Making a round trip" or simply "Making a trip") is the physical act of pulling the out of the and then running it back in. This is done by physically breaking out or disconnecting (when pulli. . A fishing trip is when a crew is forced to trip pipe to retrieve loose items in the . This can result from something being dropped in the hole, i.e. a tool, that would cause damage to the bit if the crew attempted t. The process of pulling the drillstring out of the wellbore for the purpose of changing a worn or underperforming drill bit. [pdf]

Trip tank drilling rig

A trip tank is a low-volume, calibrated tank that can be isolated from the remainder of the surface drilling fluid system and used to accurately monitor the amount of fluid going into or coming from the well. A trip tank may be of any shape provided it is calibrated accurately and a means is provided for reading the. . The primary use of the trip tank is to measure the amount of drilling fluid required to fill the hole while pulling the pipe to determine if. . While pipe tripping, for the first 5 to 10 stands off the bottom, monitors the hole through the rotary. This checks that the annulus falls as the drill pipeis removed from the hole. The pipe wiper. [pdf]