Cement composition

• US 2,945,769 A
• Filed: 08/08/1957
• Issued: 07/19/1960
• Est. Priority Date: 08/08/1957
• Status: Expired due to Term

• Current Assignee: Armando R. Gama, Wendell G. Markham
• Original Assignee: Armando R. Gama, Wendell G. Markham
• Inventors: Gama, Armando R., Markham, Wendell G.
• Application Number:
  US03/677,096
• Time in Patent Office: 1,076 Days
• US Class Current: 166/292
• CPC Class Codes: C04B 12/04 Alkali metal or ammonium silicate cements ; Alkyl silicate cements; Silica sol cements; Soluble silicate cements alkali metal silicates per se, their preparation C01B33/32; ammonium silicates per se, their preparation C01C1/00
• CPC Class Codes: C04B 14/04 Silica-rich materials; Silicates
• CPC Class Codes: C04B 14/10 Clay sepiolite C04B14/042; grog C04B18/025
• CPC Class Codes: C04B 14/14 Minerals of vulcanic origin granite C04B14/048
• CPC Class Codes: C04B 22/124 Chlorides of ammonium or of the alkali or alkaline earth metals, e.g. calcium chloride
• CPC Class Codes: C04B 24/18 Lignin sulfonic acid or derivatives thereof, e.g. sulfite lye
• CPC Class Codes: C04B 28/04 Portland cements

Claims

1. AN IMPROVED CEMENT SLURRY FOR CEMENTING CASINGS IN THE BOREHOLE OF A WELL CONSISTING ESSENTIALLY OF PORTLAND CEMENT, A POZZOLANIC MATERIAL IN THE RELATIVE PROPORTION OF FROM 10 THROUGH 100% BY WEIGHT OF SAID CEMENT, A GELATINOUS CLAY IN THE RELATIVE PROPORTION OF FROM 10 THROUGH 40% BY WEIGHT OF SAID CEMENT AND WATER TO PROVIDE A PUMPABLE SLURRY.