Isolation tool and methods of use thereof
OwnerPer Angman, Mark Andreychuk +1inventors
InventorsPer Angman, Mark Andreychuk, Scott Sherman
Life of this patent
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Abstract
Apparatus and methods are provided relating to bottom hole assemblies (BHA) for the isolation and treatment of selected zones using an uphole and a downhole sealing element. The BHA also includes a location and shifting mechanism for locating, engaging and actuating features in a wellbore. The BHA provides for the selective location and actuation of downhole features such as flow valves, precise introduction of fluid, and real-time monitoring of downhole conditions. Methods of deploying a BHA and treating an area of interest using the BHA includes engaging sealing elements using hydraulic pressure.
Claims7
A bottom hole assembly (BHA) and isolation tool connected to a tubing string for selective treatment of zones of interest of a wellbore comprising
- an upper sealing element and a lower sealing element, each hydraulically actuable between a radially retracted position and a radially engaged position with the wellbore on an activation pressure;
- a BHA annulus fluidly connected to the tubing string;
- one or more treatment ports fluidly connecting the BHA annulus and the wellbore between the upper sealing element and the lower sealing element,
- wherein when the upper sealing element and the lower sealing element are both in the radially engaged position, a zone of interest between the upper sealing element and the lower sealing element is isolated to enable treatment of the wellbore in the annular space therebetween;
- a locating and shifting tool having a shifting element hydraulically actuable to a radially biased position with the wellbore on a locating pressure,
- wherein the shifting element is in the radially biased position for locating and shifting a sleeve;
- and
- an expansion joint between the upper sealing element and the lower sealing element comprising a telescoping mechanism activated based on an annular pressure in the BHA annulus between the upper sealing element and the lower sealing element.
Dependencies are inferred from the claim text.