Method of designing a fracturing treatment for a well

Details Method of designing a fracturing treatment for a well Method of designing a fracturing treatment for a well

1986-03-24

1988-06-07

Suchfield, George A.

Wells

Processes

With indicating, testing, measuring or locating

166280, 73155, E21B 43267, E21B 4706

Patent

active

047490381

ABSTRACT:
A fracturing treatment schedule, including several phases of fracturing fluid quantities and corresponding concentations, is designed within maximum constraints imposed by a job pump time and a critical proppant concentration which are derived in response to a monitored pressure versus time test in the well. Intermediate factors used in quantifying the job pump time and the critical proppant concentration are derived from emiprically created correlations to a particular parameter derived from the pressure versus time graph. The parameter is specifically defined as a pump-in test leak-off factor corresponding to the time in minutes for the monitored pressure to decrease a predetermined amount from the pressure level existing at a predetermined time after the well has been shut-in during the test.

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patent: 4415035 (1983-11-01), Medlin et al.
patent: 4635719 (1987-01-01), Zoback et al.
Webster, K. R. et al., "A Continuous Multistage Fracturing Technique", Journal of Petroleum Technology, vol. 17, No. 6, Jun. 1965, pp. 619-625.

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