Gerald L Shoemaker

US Patent:

45909962, May 27, 1986

Filed:

Dec 13, 1984

Appl. No.:

6/681391

Inventors:

Dennis H. Hoskin - Lawrenceville NJ
L. Deane Rollmann - Princeton NJ
Gerald L. Shoemaker - Aurora OH
Kirk D. Schmitt - Pennington NJ

Assignee:

Mobil Oil Corporation - New York NY

International Classification:

E21B 4312

US Classification:

1662441

Abstract:

The accumulation of inorganic mineral scale such as barium sulfate in oil field formations and/or production equipment is inhibited by adding to formation fluid or produced fluid a scale formation inhibitory amount of a polyalkoxy sulfonate of the general formula (RO[R'O]. sub. x (CH. sub. 2). sub. y SO. sub. 3). sub. z M wherein R is a hydrophobe, R'O is a C. sub. 2 H. sub. 4 O or a C. sub. 3 H. sub. 6 O group or some combination thereof, M is a monovalent or divalet cation, x is 2 to 10, y is 0 to about 4 and z is 1 or 2.

US Patent:

49236172, May 8, 1990

Filed:

Dec 14, 1988

Appl. No.:

7/284823

Inventors:

Israel J. Heilweil - Princeton NJ
Gerald L. Shoemaker - Aurora OH

Assignee:

Mobil Oil Corporation - New York NY

International Classification:

C02F 510

US Classification:

210698

Abstract:

A process for inhibiting the formation of scale in process equipment and conduits that form because of the presence of scale forming salts present in process fluids flowing therein is provided. In this process a scale inhibiting effective amount of an inhibiting agent selected from the group consisting of polymeric sulfates, polymeric sulfonates and mixtures thereof is added to the process fluid.