A method includes wrapping a packer bag around a deployment tool, providing at least one canister in fluid communication with the packer bag, sending the packer bag around the downhole tool to a downhole location in a well, and injecting a polymer filler material from the at least one canister into the packer bag until the packer bag expands to seal the downhole location.

A joint-locking plug is deployed next to tubing joint connection gap. The actuation of the joint-locking plug allows expanding a gripping portion which includes a protrusion section. The contact between the protrusion section of the gripping portion with the inner surface of the tubing string allows to end the actuation. Due to the bi-stable slips, the pumping of an actuated plug will engage the protrusion section of the gripping portion inside the joint connection gap, and provide the locking of the gripping portion of the plug. By further applying a fluid pressure, the anchoring section of the gripping portion gets engaged and further set the plug in place, allowing to perform further operation with the plug.

A joint-locking plug is deployed next to tubing joint connection gap. The actuation of the joint-locking plug allows expanding a gripping portion which includes a protrusion section. The contact between the protrusion section of the gripping portion with the inner surface of the tubing string allows to end the actuation. Due to the bi-stable slips, the pumping of an actuated plug will engage the protrusion section of the gripping portion inside the joint connection gap, and provide the locking of the gripping portion of the plug. By further applying a fluid pressure, the anchoring section of the gripping portion gets engaged and further set the plug in place, allowing to perform further operation with the plug.

A modular pressure cylinder for a downhole tool has an active mandrel tube that supports a modular pressure cylinder. Pistons of the modular pressure cylinder are respectively interconnected and cylinder walls of modular pressure cylinder are respectively interconnected. When fluid is pumped through a tubing string into the downhole tool, the pistons are urged in one direction while the cylinder walls are urged in an opposite direction along an axis of the active mandrel tube.

The present invention relates to a downhole straddle assembly for straddling over a zone downhole in a well, the straddle assembly comprising a plurality of tubular sections mounted end to end in succession to form one tubular pipe having a first end tubular section forming a first open end of the tubular pipe, and a second end tubular section forming a second open end of the tubular pipe, said tubular pipe having an outer diameter, wherein the tubular section mounted to the first end tubular section is a first expandable metal sleeve being more pliant than the first end tubular section, and the tubular section mounted with the second end tubular section is a second expandable metal sleeve being more pliant than the second end tubular section. Furthermore, the present invention relates to a downhole straddle system for straddling over a zone downhole in a well and to a downhole straddle method.

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A method includes wrapping a packer bag around a deployment tool, providing at least one canister in fluid communication with the packer bag, sending the packer bag around the downhole tool to a downhole location in a well, and injecting a polymer filler material from the at least one canister into the packer bag until the packer bag expands to seal the downhole location.

The present invention relates to a downhole straddle assembly for straddling over a zone downhole in a well, the straddle assembly comprising a plurality of tubular sections mounted end to end in succession to form one tubular pipe having a first end tubular section forming a first open end of the tubular pipe, and a second end tubular section forming a second open end of the tubular pipe, said tubular pipe having an outer diameter, wherein the tubular section mounted to the first end tubular section is a first expandable metal sleeve being more pliant than the first end tubular section, and the tubular section mounted with the second end tubular section is a second expandable metal sleeve being more pliant than the second end tubular section. Furthermore, the present invention relates to a downhole straddle system for straddling over a zone downhole in a well and to a downhole straddle method.

An inflatable packer assembly configured to be conveyed within a wellbore. The inflatable packer assembly includes a mandrel having a flowline, a first packer ring slidably connected with the mandrel, a second packer ring fixedly connected with the mandrel, a latching mechanism fluidly connected with the flowline, and an inflatable packer fluidly connected with the flowline. The inflatable packer may be disposed around the mandrel and sealingly connected with the first and second packer rings. The inflatable packer may be operable to expand against a sidewall of the wellbore upon receiving a fluid from the flowline. The latching mechanism may be operable to limit movement of the first packer ring with respect to the mandrel, and permit the movement of the first packer ring with respect to the mandrel upon being actuated by the fluid from the flowline.

A downhole tester valve disposed below an isolation member in a test string may facilitate a shut-in drill stem test procedure. The positioning of the tester valve allows the tester valve to remain in a static location when the test string above the isolation member expands or contracts. The volume of a wellbore interval below the isolation member may remain constant and pressure readings over the duration of a shut-in DST test period may effectively be monitored. The tester valve is operatively associated with a communication unit that permits selective activation of the tester valve from across the isolation member, and in some example embodiments, an actuator for operating the tester valve is also is also operable to set the isolation member in the wellbore.

A modular pressure cylinder for a downhole tool has an active mandrel tube that supports a modular pressure cylinder. Pistons of the modular pressure cylinder are respectively interconnected and cylinder walls of modular pressure cylinder are respectively interconnected. When fluid is pumped through a tubing string into the downhole tool, the pistons are urged in one direction while the cylinder walls are urged in an opposite direction along an axis of the active mandrel tube.