S Squeeze cementing is a process of re-cementing wells by forcing a cement slurry into problematic position on the wells. In this study, Squeeze cementing was conducted on the wells “T” and “R” in the Z field to close perforation zone. The writer will analyze the result of injectivity test, the calculation of cement slurry volume, squeeze pressurse and squeeze job test. Squeeze cementing method used on the wells “T” and “R” was bardenhead method with low pressure squeezing technique, it was expected that there was not exceeding the fracture pressure. The injectivity test performed to determine the injectivity ratio on each well. Then the writer calculated the estimation of proper amount of cement slurry for both wells which went to formations to isolate the production zone on the wells T and R by 12,7 barrels and 9,6 barrels respectively and indicated pumping pressure on cement slurry by 305,03 Psi and 52,5 Psi respectively.Furthermore, the successful analysis of squeeze cementing was examined by using positive test and negative test. Once positive test was undertaken by pumping the fluid into drill pipe until fully filled, began the pressures. Afterwards, performed the negative test by swabbing. After observing for a few minutes, there is no pressure changes that could be seen on pressure gauge during 15 minutes on each well during positive test and there is no cement particle penetrated during negative test. Therefore, based on the results, it can be concluded that the application of squeeze cementing on the wells T and R was successfully seal off the perforation zone.