1. n. [Drilling]
Pipe dope, a specially formulated blend of lubricating grease and fine metallic particles that prevents thread galling (a particular form of metal-to-metal damage) and seals the roots or void spaces of threads. The American Petroleum Institute (API) specifies properties of pipe dope, including its coefficient of friction. The rig crew applies copious amounts of pipe dope to the drillpipe tool joints every time a connection is made.
Alternate Form: pipe dope
2. vb. [Drilling]
To place lubricant on drillpipe, also known as "doping" the pipe.
See: pipe dope