Method of evaluating the damage to the structure of rock surroun

Details Method of evaluating the damage to the structure of rock surroun Method of evaluating the damage to the structure of rock surroun

1994-09-23

1995-12-26

Novosad, Stephen J.

Wells

Processes

With indicating, testing, measuring or locating

73155, E21B 4908

Patent

active

054779227

ABSTRACT:
Method for evaluating the damage to the structure of rock surrounding a well, comprising the following steps: injection into the rock, which is already saturated with a first fluid having a first viscosity, of an oil with higher viscosity than the first viscosity; recording the pressure of the injected oil as a function of time; and analysis of the change in the pressure of the injected oil in order to deduce the different-permeability regions present in the rock.

REFERENCES:
patent: 3550445 (1970-12-01), Kiej
patent: 3604256 (1971-09-01), Prats
patent: 3636762 (1972-01-01), Kuo et al.
patent: 4052885 (1977-10-01), Shuck
patent: 4423625 (1984-01-01), Bostic, III et al.
patent: 4558592 (1985-12-01), Despax et al.
patent: 4597290 (1986-07-01), Bourdet et al.
patent: 4862962 (1989-09-01), Prouvost
patent: 4867237 (1989-09-01), Wilson et al.

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