Detection of fracturing events using derivatives of fracturing p

Details Detection of fracturing events using derivatives of fracturing p Detection of fracturing events using derivatives of fracturing p

1990-09-19

1992-04-21

Myracle, Jerry W.

Measuring and testing

Borehole or drilling

Downhole test

166250, E21B 4710

Patent

active

051056593

ABSTRACT:
In accordance with illustrative embodiments of the present invention, a method of determining fracture behavior from downhole pressure measurements that are made during a hydraulic well fracturing operation includes pumping fracturing fluids at a constant rate under high pressure against a formation to create fractures therein, and obtaining measurements representative of downhole pressures as pumping progresses. The logarithmic derivatives of such pressure measurements are used to determine the type of fracture behavior, as well as the onset of screenout where the fracturing fluid carries a proppant. In-situ stress or closure pressure also can be determined by finding a value thereof which makes a logarithmic net pressure plot have the same slope as the logarithmic plot of the values of the pressure derivatives.

REFERENCES:
patent: 4192182 (1980-03-01), Sylvester
patent: 4393933 (1983-07-01), Nolte et al.

Affiliated with

Also associated with

Rating

Detection of fracturing events using derivatives of fracturing p does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Detection of fracturing events using derivatives of fracturing p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of fracturing events using derivatives of fracturing p will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1577597