Patent ID: 11859124
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  E | IPC C

Claim 10:
11. A method of well treatment comprising:
providing a plurality of polymers and specification requirements for fluid loss control;
measuring physicochemical properties of each of the plurality of polymers, the physicochemical properties comprising polydispersity index (PDI), radius of gyration (Rg), concentration (conc) and weight average molecular weight (Mw);
estimating the fluid loss performance and wet time, using a model, entering the measured physicochemical properties of each of the plurality of polymers, wherein the model is in the form of:

FL=K*P(PDI)α*R(Rg)β*C([Conc])γ*D(Mw)δ

where α, β, γ, δ, K, P, R, C, and D are constants and FL is fluid loss, where α, β, γ, δ, K, P, R, C, and D are determined by regression analysis of PDI, Rg, Mw, and fluid loss at a concentration for each polymer in the plurality of polymers;
selecting at least one polymer and concentration thereof from the plurality of polymers, wherein the selected at least one polymer and concentration thereof meets or exceeds a required wet time and a required fluid loss performance, wherein the selecting is at least partially based on the estimated fluid loss performance and wet time of the at least one polymer;
preparing a test fluid comprising the selected polymer and concentration;
measuring a fluid loss of the test fluid;
preparing a cement slurry comprising the at least one polymer and the concentration thereof when the fluid loss of the test fluid is less than the specification requirements for fluid loss control, wherein the preparing of the cement slurry accounts for an effect of Rg of the at least one selected polymer on the fluid loss performance and is based, at least in part, on the constants; and
introducing the cement slurry into a wellbore.