Patent ID: 9546313
Date: 2017-01-17
CPC Classifications: C04B,C09K,E21B

Claim:
1. A method for preventing fluid and gas flow through a wellbore space around an axis and defined by an inner casing and an outer casing which surrounds the inner casing, the method comprising the steps of: preparing a cement slurry to be injected into the wellbore space; placing a cement slurry supply line into the wellbore space between the casings, the supply line having at least two lateral outlets providing at least bi-directional flow of the cement slurry away from the supply line; and injecting the cement slurry into the wellbore through the supply line and the at least two lateral outlets such that the cement slurry simultaneously flows at least bi-directionally in both clockwise and counterclockwise directions around the wellbore space generally orthogonal to the axis with minimal axial flow to completely fill an axial region of the wellbore space thereby forming a solid plug between the casings which prevents fluid and gas flow through the wellbore, the cement slurry rapidly transitioning from a flowable state to a solid state to form the plug with formation of little or no gel strength before the transition and having a near-linear relationship between the time required for the transition to occur and the composition temperature at which the transition occurs.