Published February 2018
On increase of cementing quality
Y.I. SafarovIt is known due to the drilling experience and technical literature that after oil and gas wells cementing during certain time of period (3–48 hours), oil-gas shows appear in bottomhole zone, even in those cases when cement slurry density is high than drilling mud density. One of the reasons for shows in bottomhole zone after cementing in the process of cement slurry thickening is the relaxation of pressure between cement stone and clay cake.
