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Casing perforating and erosion system for cavern erosion in a heavy oil formation and method of use
Casing perforating and erosion system for cavern erosion in a heavy oil formation and method of use
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机译:用于重油地层中的洞穴侵蚀的套管射孔和侵蚀系统及其使用方法
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摘要
A system and method for forming a cavern in a formation beyond a cased wellbore utilizes a locator to position a perforating gun in the wellbore for forming axially aligned, spaced-apart perforations through the casing. The locator has a stationary portion, run in and anchored in the wellbore below a zone of interest. The perforating guns have a moveable portion of the locator at a downhole end and are run in and coupled with the stationary portion. Where two or more guns are used to form the perforations, the guns are indexed relative to one another for forming the offset perforations. The guns are tripped from the wellbore and a wash tool having a moveable portion of the locator at a downhole end is run in and coupled in the wellbore. The locator acts to delimit a reciprocation of the wash tool along the space-apart perforations for delivering a non-abrasive fluid therethrough for forming the cavern.
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