Abstract: A system can include a bottom hole assembly, a wireline and a capillary tube connected to the bottom hole assembly, and a dual pack-off assembly that seals about the wireline and the capillary tube. A method can include connecting a bottom hole assembly to a wireline and a capillary tube, deploying the bottom hole assembly into a wellbore, and increasing pressure in the capillary tube, thereby setting a packer of the bottom hole assembly. A dual pack-off assembly can include a lubricator connector, pack-offs configured to seal about a capillary tube and a wireline, and pipes connected between the respective pack-offs and the lubricator connector.

Abstract: A flow conveyed plugging device for use in a well, the device can include a body, and one or more lines extending outwardly from the body, each of the lines having a lateral dimension that is substantially smaller than a size of the body. A method of plugging an opening in a well can include deploying at least one flow conveyed plugging device into the well, the flow conveyed plugging device including a body and, extending outwardly from the body, at least one of the group consisting of: a) one or more fibers and b) one or more lines, the flow conveyed plugging device being conveyed by flow in the well into sealing engagement with the opening. Another flow conveyed plugging device can include a body, and fibers extending outwardly from the body. The flow conveyed plugging device degrades and thereby permits flow through an opening in the well.

Abstract: A method of deploying a plug in a subterranean well can include positioning a tool string in the well, the tool string including a plug release tool and a well tool, then releasing the plug from the plug release tool, and then operating the well tool in response to the releasing the plug. A plug release tool for use in a subterranean well can include an outer housing, and an insert secured in the outer housing, the insert including multiple longitudinally extending flow passages formed through the insert.

Abstract: A fluid pulse generator can include a fluid motor including a rotor that rotates in response to fluid flow, a variable flow restrictor positioned upstream of the fluid motor and including a restrictor member rotatable relative to a ported member and longitudinally displaceable relative to the rotor. Another fluid pulse generator can include a flex joint or a constant velocity joint connected between the restrictor member and the rotor. In another fluid pulse generator, the variable flow restrictor can include a valve and a fluidic restrictor element, the valve being operable in response to rotation of the rotor, the fluidic restrictor element being configured to generate fluid pulses in response to the fluid flow through a flow path, and the valve being configured to control the fluid flow through another flow path connected in parallel with the first flow path.

Abstract: A method of deploying a plug in a subterranean well can include positioning a tool string in the well, the tool string including a plug release tool and a well tool, then releasing the plug from the plug release tool, and then operating the well tool in response to the releasing the plug. A plug release tool for use in a subterranean well can include an outer housing, and an insert secured in the outer housing, the insert including multiple longitudinally extending flow passages formed through the insert.

Abstract: A downhole well tool assembly can include a perforator and a selectively openable and closable perforation plug discharge port. A method of perforating and treating multiple formation zones of a well in a single trip of a downhole well tool assembly into the well can include positioning the downhole well tool assembly at a zone, closing a perforation plug discharge port of the downhole well tool assembly, perforating the zone, treating the zone, opening the perforation plug discharge port, deploying perforation plugs into the well via the perforation plug discharge port, plugging perforations in the zone with the perforation plugs, positioning the downhole well tool assembly at a subsequent zone, closing the perforation plug discharge port, perforating the subsequent zone, and treating the subsequent zone.

Abstract: An electrical power generation system for use with an electrical power generator can include a battery bank adapted to be charged by electrical power generated by the electrical power generator, and a nitrogen extraction system adapted to be powered by the electrical power generated by the electrical power generator. An electrical power generation method for use with an electrical power generator can include storing electrical power generated by the electrical power generator in a battery bank located at a battery bank site, extracting nitrogen at the battery bank site, and liquifying the nitrogen at the battery bank site.

Abstract: A downhole well tool assembly can include a perforator and a selectively openable and closable perforation plug discharge port. A method of perforating and treating multiple formation zones of a well in a single trip of a downhole well tool assembly into the well can include positioning the downhole well tool assembly at a zone, closing a perforation plug discharge port of the downhole well tool assembly, perforating the zone, treating the zone, opening the perforation plug discharge port, deploying perforation plugs into the well via the perforation plug discharge port, plugging perforations in the zone with the perforation plugs, positioning the downhole well tool assembly at a subsequent zone, closing the perforation plug discharge port, perforating the subsequent zone, and treating the subsequent zone.

Abstract: A casing string is augmented with one or more variable flow resistance devices or “vibrating tools” to facilitate advancement of the casing and distribution of the cement in the annulus once the casing is properly positioned. Vibrating tools in the form of plugs can be pumped down and landed inside the casing string. The method includes vibrating the casing string while advancing the casing down the wellbore or while the cement is pumped into the annulus, or both. After the cementing operation is completed, the devices may be drilled out or retrieved with fishing tools to reopen the casing string for further operations. One or more wipers may be provided on the plugs, but the section housing the flow path may be free of wipers to allow the size and flow capacity of the flow path to be optimized.

Abstract: A flow conveyed plugging device for use in a well, the device can include a body, and one or more lines extending outwardly from the body, each of the lines having a lateral dimension that is substantially smaller than a size of the body. A method of plugging an opening in a well can include deploying at least one flow conveyed plugging device into the well, the flow conveyed plugging device including a body and, extending outwardly from the body, at least one of the group consisting of: a) one or more fibers and b) one or more lines, the flow conveyed plugging device being conveyed by flow in the well into sealing engagement with the opening. Another flow conveyed plugging device can include a body, and fibers extending outwardly from the body. The flow conveyed plugging device degrades and thereby permits flow through an opening in the well.

Abstract: A flow conveyed plugging device for use in a well, the device can include a body, and one or more lines extending outwardly from the body, each of the lines having a lateral dimension that is substantially smaller than a size of the body. A method of plugging an opening in a well can include deploying at least one flow conveyed plugging device into the well, the flow conveyed plugging device including a body and, extending outwardly from the body, at least one of the group consisting of: a) one or more fibers and b) one or more lines, the flow conveyed plugging device being conveyed by flow in the well into sealing engagement with the opening. Another flow conveyed plugging device can include a body, and fibers extending outwardly from the body. The flow conveyed plugging device degrades and thereby permits flow through an opening in the well.

Abstract: A method of deploying a plug in a subterranean well can include positioning a tool string in the well, the tool string including a plug release tool and a well tool, then releasing the plug from the plug release tool, and then operating the well tool in response to the releasing the plug. A plug release tool for use in a subterranean well can include an outer housing, and an insert secured in the outer housing, the insert including multiple longitudinally extending flow passages formed through the insert.

Abstract: A system can include a disconnect tool connected as part of a tubular string, the disconnect tool including an outer housing, and an inner mandrel in the outer housing, in which an abrasive slurry is directed to flow through the tubular string and from the inner mandrel to an annulus between the inner mandrel and the outer housing, and the abrasive slurry erodes through the outer housing. A method can include installing a tubular string in a well, then deploying a disconnect assembly into the tubular string, and flowing an abrasive slurry through the disconnect assembly, thereby parting the tubular string. A disconnect tool can include a rotational flow structure configured to induce rotational flow, and an inner diameter decrease downstream of the rotational flow structure.

Abstract: A method of plugging at least one undesired opening in a fluid conduit can include introducing one or more plugging devices into the conduit, conveying the plugging devices by flow to the opening, and blocking the flow through the opening with the plugging devices. A system for plugging at least one undesired opening in a fluid conduit can include a deployment apparatus configured to introduce one or more plugging devices into the conduit, a sensor that measures a physical parameter indicative of leakage from the conduit, and a controller that activates an actuator of the deployment apparatus in response to receipt from the sensor of an indication of leakage from the conduit.

Abstract: A plugging device, well system and method. In one example, a wrap, band or other type of binding is utilized to secure together multiple fibers, tubes, filaments, films, fabrics or lines of the plugging device. In another example, fibers, tubes, filaments, films, fabrics or lines are fused, adhered or bonded to an outer surface of a body of the plugging device. In other examples, a material of the plugging device may become more rigid or swell in a well. A plugging device may comprise a body loosely enclosed in a bag, wrapper or other enclosure.

Abstract: A system can include a bottom hole assembly, a wireline and a capillary tube connected to the bottom hole assembly, and a dual pack-off assembly that seals about the wireline and the capillary tube. A method can include connecting a bottom hole assembly to a wireline and a capillary tube, deploying the bottom hole assembly into a wellbore, and increasing pressure in the capillary tube, thereby setting a packer of the bottom hole assembly. A dual pack-off assembly can include a lubricator connector, pack-offs configured to seal about a capillary tube and a wireline, and pipes connected between the respective pack-offs and the lubricator connector.

Abstract: A method of treating each of multiple formation zones in a subterranean well can include isolating two of the zones from each other in the wellbore with a plug assembly positioned in the wellbore; treating one of the zones by flowing a treatment fluid through openings that provide fluid communication between the wellbore and one of the zones; then blocking flow through the openings; increasing pressure in the wellbore in response to the blocking; and opening the plug assembly in response to the pressure increasing. A well treatment system for treating each of multiple zones intersected by a wellbore can include multiple plug assemblies in the wellbore, each of the plug assemblies isolating a respective adjacent pair of the zones from each other in the wellbore. Each of the plug assemblies opens in response to a respective predetermined pressure differential applied across the plug assembly.

Abstract: A fluid pulse generator can include a fluid motor including a rotor that rotates in response to fluid flow, a variable flow restrictor positioned upstream of the fluid motor and including a restrictor member rotatable relative to a ported member and longitudinally displaceable relative to the rotor. Another fluid pulse generator can include a flex joint or a constant velocity joint connected between the restrictor member and the rotor. In another fluid pulse generator, the variable flow restrictor can include a valve and a fluidic restrictor element, the valve being operable in response to rotation of the rotor, the fluidic restrictor element being configured to generate fluid pulses in response to the fluid flow through a flow path, and the valve being configured to control the fluid flow through another flow path connected in parallel with the first flow path.

Abstract: A system can include a disconnect tool connected as part of a tubular string, the disconnect tool including an outer housing, and an inner mandrel in the outer housing, in which an abrasive slurry is directed to flow through the tubular string and from the inner mandrel to an annulus between the inner mandrel and the outer housing, and the abrasive slurry erodes through the outer housing. A method can include installing a tubular string in a well, then deploying a disconnect assembly into the tubular string, and flowing an abrasive slurry through the disconnect assembly, thereby parting the tubular string. A disconnect tool can include a rotational flow structure configured to induce rotational flow, and an inner diameter decrease downstream of the rotational flow structure.

Abstract: A system can include an annular restrictor connected in a tubular string. The annular restrictor restricts flow through an annulus formed between the tubular string and a wellbore. Restriction to the flow through the annulus biases the tubular string into the wellbore, and fluid in the wellbore displaces into the tubular string and/or a formation penetrated by the wellbore. A method can include connecting an annular restrictor in a tubular string, and flowing a fluid through an annulus formed between the tubular string and a wellbore, thereby causing a differential pressure across the annular restrictor, the differential pressure biasing the tubular string into the wellbore. Another method can include connecting an annular restrictor in a tubular string, flowing a fluid through an annulus, thereby biasing the tubular string into a wellbore, and then causing the annular restrictor to no longer restrict flow through the annulus.