Abstract:
A technique is provided for optimizing well production. Intervals are selected along a deviated wellbore, and a well test and treatment string is deployed in the wellbore. Each interval is then isolated to enable performance of desired testing. The test data obtained is evaluated to determine an appropriate remedial action which is then implemented via the well test and treatment string. The system and method enable the testing and treatment of a plurality of intervals along a horizontal well during the same run downhole.
Abstract:
A method of treating an underground formation that has been penetrated by a well, the well having a wellbore. The method comprising the steps of lowering a valve into the well until the valve is adjacent the formation with the valve being placed to control flow of fluid between the formation and the wellbore, establishing a pressure differential across the valve; and selectively and repeatedly opening and closing the valve to cause cyclical pressure variation in the formation and induce surges of fluid from the formation into the wellbore. Apparatus for carrying out the method is also disclosed. A method of operating a downhole valve is also disclosed. A method of formation evaluation is also disclosed.
Abstract:
A method of treating an underground formation that has been penetrated by a well, the well having a wellbore. The method comprising the steps of lowering a valve into the well until the valve is adjacent the formation with the valve being placed to control flow of fluid between the formation and the wellbore, establishing a pressure differential across the valve; and selectively and repeatedly opening and closing the valve to cause cyclical pressure variation in the formation and induce surges of fluid from the formation into the wellbore. Apparatus for carrying out the method is also disclosed. A method of operating a downhole valve is also disclosed. A method of formation evaluation is also disclosed.
Abstract:
Method and apparatus for performing well operations, such as measuring or forming or testing or treating or the like, and combinations of the above operations, including the use of coiled-in-coiled tubing (CCT) connected to a bottomhole assembly package (BHA), such that the assembly is in communication with both fluid conduits (80 and 82) defined by the coiled-in-coiled tubing.
Abstract:
A safeguarded method and apparatus for providing fluid communication with coiled tubing (20), said coiled tubing (20) comprising more particularly coiled-in-coiled tubing, having an inner tube (102) and an outer tube (100), and including multicentric coiled-in-coiled tubing (21) and its method of assembly, the safeguarded method having particular applicability to drill stem testing.