Method for control of fluid loss and gas migration in well cemen

Details Method for control of fluid loss and gas migration in well cemen Method for control of fluid loss and gas migration in well cemen

1999-08-11

2000-07-18

Suchfield, George

Wells

Processes

Cementing, plugging or consolidating

106696, 106725, 106727, 106823, 166295, 524 3, 524 5, E21B 33138, E21B 3314

Patent

active

060893184

ABSTRACT:
This invention discloses a polymer composition, a cement slurry containing said polymer composition and a method of using the cement slurry to cement a borehole penetrating a subsurface earth formation wherein the polymer composition is made by polymerizing a vinylamide morpholine derivative with a styrene sulfonic acid salt in the presence of a humate. The polymer composition operates to reduce fluid loss from the cement slurry to the subsurface formation.

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