| abstract |
A new thread compound for tubing, casing and sucker rods which is composed of: mineral oil (freezing point in the range from -10 DEG to -14 DEG C.), polyisobutene solution (Staudinger index J DEG 46 to 52) in mineral oil, anticorrosive additive based on organic compounds, which do not contain heavy metals and chlorinated hydrocarbons, and which is dissolved in mineral oil, modified alumino-silicate as trialkylaryl ammonium smectite, propylene carbonate density/20 DEG C. 1.189, aluminium stearate (ash from 9.5 to 11.5 wgt. parts), graphite (quality as required in API 5A3), copper flake (quality as required in API 5A3), lead powder (quality as required in API 5A3) and zinc dust (quality as required in API 5A3), and a process for its manufacture are provided. The thread compound is characterized by high resistance to temperature, pressure, extreme friction and wear. |