METHOD AND SYSTEM FOR LOCATING SELF-SETTING DISSOLVABLE PLUGS WITHIN A WELLBORE

    公开(公告)号:WO2020237239A1

    公开(公告)日:2020-11-26

    申请号:PCT/US2020/034516

    申请日:2020-05-26

    Abstract: Method and system for deploying a frac package in a wellbore includes providing a location module for the frac package that can determine a position of the frac package in the wellbore. The location module operates to receive beacon signals from beacons located on the wellbore string and to calculate a velocity of the frac package based on the beacon signals. The location module further operates to calculate a location of the frac package based a time since a latest beacon signal and the velocity of the frac package. In some implementations, the beacons include at least one beacon that transmits or emits a signal and at least one beacon that does not transmit or emit a signal.

    ACID FRACTURING WITH DISSOLVABLE PLUGS
    7.
    发明申请

    公开(公告)号:WO2020236444A1

    公开(公告)日:2020-11-26

    申请号:PCT/US2020/032257

    申请日:2020-05-08

    Abstract: Acid stimulation operations in a wellbore may be conducted using frac plugs constructed of a hydrolytically degradable polymer. The frac plugs may be constructed of an aliphatic polyester such as PGA and may be readily pumped into position in the wellbore due in part to their relatively low density. Once perforations have been created in the wellbore and a first frac plug is set in place, an acid solution may be pumped at a high-pressure acid against the frac plug and into the geologic formation. A second and/or any number of subsequent frac plugs may be pumped behind the acid, e.g., in brine solution, to be used in subsequent acid stimulation operations. After completing acid stimulation operations, the frac plugs may degrade in the wellbore to permit production within two weeks.

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