Improved Polymer Composition and Method for reducing the loss of Fluidity of the drilling Mud and Cementing compositions.

摘要

The present Invention relates to a Polymer composition to reduce the loss of Fluid in Drilling Mud and Cementing compositions used in the Recovery of Oil and GasWhich is obtained by polymerization initiated by Free radical in an aqueous mixture of (a) lignin modified lignins, lignite, Bituminous Coal,Modified bituminous coal or mixtures thereof, and (b) at least one water-soluble Vinyl monomer selected from the group consisting of (meth) acrylic acid acrylamide) (MET)Hydroxyethyl Acrylate, hydroxypropyl acrylate, vinyl acetate, metilvinu00edlico etilvinilico ether, ether, N - methyl (meth) acrylamide, N, n-dimethyl acrylamide (MET)Vinyl Sulfonate and acril - amido acid - N - metilpropansulfu00f3nico,And where the weight of a: B is within the range of approximately 8: 2 to approximately 2: 8 and recovering the polymer composition.