Diverting technique to stage fracturing treatments in horizontal

Details Diverting technique to stage fracturing treatments in horizontal Diverting technique to stage fracturing treatments in horizontal

1989-07-14

1990-08-28

Massie, IV, Jerome W.

Wells

Processes

Cementing, plugging or consolidating

166271, 166274, 166270, 166279, 166291, 166294, 166300, E21B 4300

Patent

active

049517511

ABSTRACT:
A method for staging a fracturing treatment in a horizontal wellbore where solidified gel is used as a diverting medium. A desired section of the horizontal wellbore farthest removed from the angle of deviation from vertical of the wellbore is perforated. Via perforations contained in the horizontal section, the desired interval is fractured hydraulically. The gel is displaced with a "wiper plug" and the gel confined to the fractured interval and wellbore area adjacent the fractured interval. Here the gel forms a solid gel in the interval and a gel plug in the wellbore. Afterwards, another section of the horizontal well is perforated. Thereafter, a second desired interval is fractured. After completion of the fracturing process, the gel plug breaks and the "wiper plug" is pumped to the farthest end of the horizontal wellbore.

REFERENCES:
patent: 4067389 (1978-01-01), Savins
patent: 4153118 (1979-05-01), Hart
patent: 4265311 (1981-05-01), Ely
patent: 4333461 (1982-06-01), Muller
patent: 4378845 (1983-04-01), Medlin et al.
patent: 4722397 (1988-02-01), Sydansk
patent: 4759579 (1988-07-01), Swenson
patent: 4817719 (1989-04-01), Jennings, Jr.
patent: 4819726 (1989-04-01), Beirute et al.

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