作者: Donald W. Winslow , James C. Tucker , Jeffrey S. Walter , Steven L. Schwegman
DOI:
关键词:
摘要: A packer apparatus with a circulating port. housing of the has inflation passages, treating fluid and equalizing passages defined therein. In straddle embodiment, upper lower packers are mounted on opposite sides an outlet passage. circulation valve sliding differential pressure actuated sleeve is disposed below packers. An inner mandrel slidably received in central opening housing. The bore ports, port all which communicate bore. lug endless J-slot operably associated for controlling telescoping position relative to response reciprocation without rotation may also be used lock closed position. define repeatable sequence inflating (or deflating) position, intermediate ready wherein tool return original next stroke within