Wells – Processes – With indicating – testing – measuring or locating
Patent
1996-04-04
1998-04-28
Suchfield, George A.
Wells
Processes
With indicating, testing, measuring or locating
7315217, 7315251, 1662501, 16625017, E21B 4706, E21B 4710
Patent
active
057433348
ABSTRACT:
A method is provided for evaluating the quality of a hydraulic fracture treatment performed in a completed wellbore penetrating a subterranean hydrocarbon-bearing formation. The method is initiated by creating a pressure differential or utilizing an existing pressure differential between the wellbore and the formation and placing a lower packer and an upper packer in the wellbore. The lower and upper packers are positioned in the wellbore at or near the bottom of the producing interval to enclose one or more lower perforations within a wellbore chamber sealed to the remainder of the wellbore. Pressure values of the wellbore chamber are measured for a predetermined time period and then the lower and upper packers are repositioned to enclose the next one or more perforations in sequence within a new wellbore chamber. This procedure is repeated until pressure values have been measured in all wellbore chambers enclosing perforations of interest. The pressure values are used to the determine rate of pressure change in each wellbore chamber. By comparing the rates of pressure change of the wellbore chambers, the character and quality of a fracture and/or fracture network at the casing perforations can be evaluated. A relatively high rate of pressure change in a given wellbore chamber is indicative that the one or more casing perforations of the wellbore chamber are in fluid communication with one or more high quality fractures having a high degree of networking and/or vertical connectivity with other casing perforations. A relatively low rate of pressure change in a given wellbore chamber is indicative that the one or more casing perforations of the wellbore chamber are in fluid communication with one or more low quality fractures having little or no networking and/or vertical connectivity.
REFERENCES:
patent: 3248938 (1966-05-01), Hill et al.
patent: 3602308 (1971-08-01), Vincent
patent: 3872717 (1975-03-01), Fox
patent: 3934468 (1976-01-01), Brieger
patent: 4149409 (1979-04-01), Serata
patent: 4372380 (1983-02-01), Smith et al.
patent: 4398416 (1983-08-01), Nolte
patent: 4442895 (1984-04-01), Lagus et al.
patent: 4453595 (1984-06-01), Lagus et al.
patent: 4461171 (1984-07-01), de la Cruz
patent: 4566535 (1986-01-01), Sanford
patent: 4660415 (1987-04-01), Bouteca
patent: 4665984 (1987-05-01), Hayashi et al.
patent: 4806153 (1989-02-01), Sakai et al.
patent: 4836280 (1989-06-01), Soliman
patent: 4843878 (1989-07-01), Purfurst et al.
patent: 4860581 (1989-08-01), Zimmerman et al.
patent: 4898241 (1990-02-01), Wittrisch
patent: 4936139 (1990-06-01), Zimmerman et al.
patent: 5005643 (1991-04-01), Soliman et al.
patent: 5031163 (1991-07-01), Holzhausen et al.
patent: 5042595 (1991-08-01), Ladanyi
patent: 5165274 (1992-11-01), Thiercelin
patent: 5165276 (1992-11-01), Thiercelin
patent: 5287741 (1994-02-01), Schultz et al.
patent: 5295393 (1994-03-01), Thiercelin
patent: 5335542 (1994-08-01), Ramakrishnan
patent: 5337821 (1994-08-01), Peterson
patent: 5417103 (1995-05-01), Hunter et al.
patent: 5472049 (1995-12-01), Chaffee et al.
patent: 5477922 (1995-12-01), Rochon
patent: 5549159 (1996-08-01), Shwe et al.
Brown Rodney
Chevron U.S.A. Inc.
Suchfield George A.
Turner W. Keith
Zavell A. Stephen
LandOfFree
Evaluating a hydraulic fracture treatment in a wellbore does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Evaluating a hydraulic fracture treatment in a wellbore, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evaluating a hydraulic fracture treatment in a wellbore will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1524702