Method of evaluating subsurface fracturing operations

Details Method of evaluating subsurface fracturing operations Method of evaluating subsurface fracturing operations

1987-09-29

1989-06-06

Kisliuk, Bruce M.

Wells

Processes

With indicating, testing, measuring or locating

166308, 73155, E21B 4706

Patent

active

048362808

ABSTRACT:
A method of performing a mini-frac operation wherein the effects of the compressibility of the fracturing fluid and the increase in fracturing fluid temperature are considered. The mini-fracturing operation is performed and the pressure decline is observed at selected intervals over a determined time period. The observed pressure decline values are adjusted to compensate for fluid compressibility and/or for temperature increase. A correlation term is determined which is utilized to determine parameters of the formation and fracture. The parameters of the fracturing operation are then determined in response to the adjusted pressure decline values. The parameters may be adjusted in response to the compensation for temperature and fluid compressibility either by adjusting the observed pressure decline values and comparing them to a known reference, or by establishing new reference values for the well to be correlated with the observed pressure decline to determine a correlation term.

REFERENCES:
patent: 4192182 (1980-03-01), Sylvester
patent: 4372380 (1983-02-01), Smith et al.
patent: 4393933 (1983-07-01), Nolte et al.
patent: 4398416 (1983-08-01), Nolte
patent: 4453595 (1984-06-01), Lagus et al.
patent: 4577689 (1986-03-01), Dotson
patent: 4660415 (1987-04-01), Bouteca
Determination of Fracture Parameters from Fracturing Pressure Decline by Kenneth G. Nolte, pp. 1-11, Sept. 1979.

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