Method for reducing torque in downhole drilling

Details Method for reducing torque in downhole drilling Method for reducing torque in downhole drilling

1994-09-02

1996-07-16

Suchfield, George A.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

175 65, 507133, 507135, 507136, E21B 2100, E21B 4700, C09K 702

Patent

active

055358349

ABSTRACT:
The present invention relates to a method and a solution for use in downhole drilling to reduce the torque necessary to rotate the drill string. The solution comprises a sulfonate according to the formula (RSO.sub.3).sub.x Me.sup.x, where R is selected from the group consisting of an alkyl group, an aryl group, an alkylaryl group, and mixtures thereof having a molecular weight between about 280 and about 650, x is the number of (RSO.sub.3) groups, and Me.sup.x is a metal ion having a valence x. The solution is pumped down a drill string as a slug in order to coat solids which accumulate in the well and allow them to be removed along with the drilling fluid.

REFERENCES:
patent: 3642623 (1972-02-01), Bennett et al.
patent: 3712393 (1973-01-01), Sheldahl et al.
patent: 3840460 (1974-10-01), Sheldahl et al.
patent: 4064056 (1977-12-01), Walker et al.
patent: 4496012 (1985-01-01), Savins
patent: 4821563 (1989-04-01), Maron
patent: 5099930 (1992-03-01), Enright et al.

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