Thread compound developed from solid grease base and the relevan

Details Thread compound developed from solid grease base and the relevan Thread compound developed from solid grease base and the relevan

1997-11-04

1999-03-23

Howard, Jacqueline V.

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Graphite, coal, or elemental carbon

508122, 508123, C10M11102

Patent

active

058859411

ABSTRACT:
A new thread compound for tubing, casing and sucker rods which is composed of: mineral oil (freezing point in the range from -10.degree. to -14.degree. C.), polyisobutene solution (Staudinger index J.sub..degree. 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.degree. 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.

REFERENCES:
patent: 4525287 (1985-06-01), Carstensen
patent: 5049289 (1991-09-01), Jacobs
patent: 5085700 (1992-02-01), Howard
patent: 5180509 (1993-01-01), Jacobs
patent: 5431831 (1995-07-01), Vincent
patent: 5498351 (1996-03-01), Hefling
patent: 5536422 (1996-07-01), Olcliges et al.
Prengaman, R.D., "Thread Compounds--How do they Work?", Petroleum Engineer International, Oct. 1981, pp. 93-106.
Portwood, R.B., "Lubrication Requirements of Rotary Shouldered Tool Joint Connections", NLGI Spokesman, Nov. 1981, pp. 270-276.
Dresel, Von W.H., "Grundlegende Aspekte zukunftsorientierter Schmierfette", Tribologie+Schmierungstechnik, 40, Jahrgang, Mar. 1993, pp. 176-182.
Jacobs, N.L. et al, "New Standards Required for Environmental Thread Compounds", NLGI Spokesman, vol. 56, No. 4, Jul. 1992, pp. 13-137 through 17-141.

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