Process for preparing non-cementitious loss control composition

A method for preparing a non-cementitious loss control composition, wherein non-cementitious means without cement, the method comprising:

• adding bentonite to water to form a gel slurry;
• adding a cross linking agent to the gel slurry, wherein the cross linking agent is a cross linking polymer selected from a group consisting of welan gum, guar gum and diutan gum;
• adding a binding agent to the gel slurry and the cross linking agent, wherein the binding agent is magnesium sulphate;
• adding a strengthening agent to the binding agent, the gel slurry and the cross linking agent, wherein the strengthening agent is dead burnt magnesite;
• adding a bridging agent to the strengthening agent, the binding agent, the gel slurry and the cross linking agent;
• and
• stirring the bridging agent, the strengthening agent, the binding agent, the gel slurry, and the cross-linking agent at 4000 rpm to obtain a homogeneous loss control composition,
• wherein the loss control composition is a lightweight thixotropic composition having a density range of 10 pounds per gallon (ppg) to 16 ppg.