Study And Application Of SYG Latex Cement Slurry

There are water, gas and oil channeling happening in the process of cementing, which decreases the compressive strength and make the quality of the second interface bad, especially in the deep well. As it happens, it is very hard to recover the initial performance of inter formation. Sometimes it maybe blowout and even the squeezing work do not work. Till now, to solve the problem in China is to add the expander additive to cement and install the packer. But we have another way to work is the application of the latex cement slurry. Produce and optimize some kinds of latex, evaluate the performance of gas-channeling prevention, and choose one kind to test the capability of mixing with the cement slurry including fluid loss, consistency, thickening time, free water, rupture strength, modulus of elasticity, capacity of compatibility). Through the cementing design with the latex cement slurry, lab test and research on the application, analysis of phenomenon in lab test and mechanism of function and field test, this latex cement has good gas-channeling prevention ability and good restrain ability of oil and water down hole.