摘要:
Methods and apparatus are presented for a “disappearing” perforator gun assembly. In a preferred method of perforating a well casing, inserted into the well casing is a tubing conveyed perforator having an outer tubular made from a metallic glass alloy having high strength and low impact resistance. An inner structure is positioned within the outer tubular and holds one or more explosive charges. Upon detonating the explosive charges, the outer tubular is fragmented. The inner structure is preferably also substantially destroyed upon detonation of the one or more explosive charges. For example, the inner structure can be made from a combustible material, corrodible, dissolvable, etc., material. A disintegration-enhancing material is optionally positioned between the outer tubular and the inner structure. Additional embodiments are presented having gun housings which dematerialize upon detonation of the charges.
摘要:
Methods and apparatus are presented for a “disappearing” perforator gun assembly. In a preferred method of perforating a well casing, inserted into the well casing is a tubing conveyed perforator having an outer tubular made from a metallic glass alloy having high strength and low impact resistance. An inner structure is positioned within the outer tubular and holds one or more explosive charges. Upon detonating the explosive charges, the outer tubular is fragmented. The inner structure is preferably also substantially destroyed upon detonation of the one or more explosive charges. For example, the inner structure can be made from a combustible material, corrodible, dissolvable, etc., material. A disintegration-enhancing material is optionally positioned between the outer tubular and the inner structure. Additional embodiments are presented having gun housings which dematerialize upon detonation of the charges.
摘要:
A navigation system for a downhole tool comprises a first sensor operable within a well bore to sense a parameter, at least one additional sensor, each of the at least one additional sensors being operable within the well bore to sense a parameter, and a locator component operable to determine a location of the downhole tool within the well bore based on the sensed parameters. A method for determining a location of a downhole tool within a well bore comprises deploying the downhole tool into the well bore, sensing a first parameter within the well bore via the tool, sensing at least a second parameter within the well bore via the tool, and self-determining the location of the tool based on the sensed parameters without receiving communications from the surface.
摘要:
A method of servicing a well bore comprises deploying into the well bore a zonal isolation device operable to self-set at a sensed location, and self-setting the zonal isolation device to hold at the sensed location without receiving command communications from the surface, wherein the zonal isolation device is deployed along at least a partial length of the well bore via an external force. Another method of servicing comprises deploying into the well bore a tool operable to self-activate at one or more locations, and self-navigating the tool to determine the one or more locations without receiving communications from the surface, wherein the tool is moved along at least a partial length of the well bore via an external force.
摘要:
An autonomous downhole tool for use in a well bore is moved along at least a partial length of the well bore via an external force, and the tool is self-operable to perform one or more functions at one or more locations within the well bore.. A method for operating a downhole tool within a well bore comprises deploying the tool along at least a partial length of the well bore via an external force, and self-activating one or more functions of the tool, wherein the tool does not receive command communications from the surface.
摘要:
A downhole tool for use in a well bore comprises an onboard navigation system for determining the location of the tool within the well bore, wherein the tool is moved along at least a partial length of the well bore via an external force. A method of locating a downhole tool in a well bore comprises deploying the tool along at least a partial length of the well bore via an external force, and self-determining the location of the tool without receiving communications from the surface. In an embodiment, the tool is a well bore zonal isolation device.
摘要:
Disclosed are systems and methods for remote actuation of a downhole tool. One system includes a work string providing a flow path therein, a downhole tool coupled to the work string, at least one actuation device operatively coupled to the downhole tool and configured to act on the downhole tool such that the downhole tool performs a predetermined action, and an optical computing device communicably coupled to the at least one actuation device and configured to detect a characteristic of a substance in the flow path and trigger actuation of the at least actuation device when the characteristic is detected.
摘要:
A well screen assembly for use in a wellbore comprises a base pipe comprising one or more fluid passageways, and a shape-memory alloy disposed about the base pipe. The one or more fluid passageways are configured to provide fluid communication between an exterior of the base pipe and a central flowbore, and the shape-memory alloy is configured to transition between an expanded state and a compressed state in response to a trigger.
摘要:
An apparatus includes an impervious body, a sealing element; an energy source, and a trigger. The impervious body is configured to prevent passage of fluid therethrough. The sealing element is disposed about the impervious body. The energy source is operationally connected to the sealing element. The trigger is configured to transfer energy from the energy source to the sealing element. The trigger is activated, at least in part, by receiving a signal from a pump tool passing through an interior of the impervious body.
摘要:
A device for monitoring the health state of hydrocarbon production equipment is disclosed. The device has a plurality of targets, which are associated with the hydrocarbon production equipment. A record of the initial target positions and/or dimensions relative to the hydrocarbon production equipment is created. A sensor that is compatible with the targets is used to observe the targets and produce a sensor output. An analysis device uses the record of the initial positions, dimensions and the sensor output to determine one or more health state parameters, which may be used to determine the health state of the hydrocarbon production equipment.