39 results about "Well intervention" patented technology

In general, in one aspect, embodiments relate to a method that includes assembling a downhole tool from a plurality of subassemblies with a robotic tool assembly disposed on a subsea tree at a sea-floor in a subsea environment. The method may also include introducing the downhole tool into a wellbore, traversing the wellbore with the downhole tool to reach one or more target depths, performing at least a wellbore operation with the downhole tool at the one or more target depths, and retrieving the downhole tool from the wellbore after performing the wellbore operation.

An apparatus and method for measuring position and magnitude of downhole mechanical friction. The apparatus comprises sensors that reside along, or in-line with, a section of equipment that is installed or removed from a wellbore. The sensing device is configured to measure friction relative to the wellbore during a work-over or other well intervention procedures where said section of equipment (tubing, rods, cable / wireline, etc.) is installed in, or removed from, the wellbore. Recorded measurements are processed to correct for dynamic forces to provide a measure of friction through the wellbore. Additionally, a method for applying the map of wellbore friction to the design and analysis of a rod actuated pump is presented. The method and apparatus presented herein pertain specifically to the handling of continuous rod, continuous tubing, or wireline / cable passing through the wellbore as measured at surface.

Systems and methods presented herein facilitate ensuring the integrity of oil and gas well intervention operations using blockchain technologies. In particular, the systems and methods described herein utilize blockchain technologies to ensure that all data relating to oil and gas well intervention operations are captured and stored in substantially real time during the operations in a secure and immutable manner.

Methods related to the field of subsea well intervention, e.g. plug and abandonment, and in particular to methods for plugging of subsea wells and substantiating the quality of the well plug. Method for a barrier setting in a wellbore, the method comprising planning the barrier setting, simulating the planned barrier setting, creating an operation plan for the barrier setting; performing a risk assessment for the operation plan; executing the operation plan setting the barrier in the wellbore; and verifying the barrier in the wellbore.

Disclosed embodiments relate to systems for providing well intervention for a subsea wellhead. For example, the system can comprise a tool insertion system and a subsea work chamber, with the tool insertion system operatively coupled to the subsea work chamber and to the wellhead. In embodiments, both the work chamber and the tool insertion system can be disposed subsea, for example in proximity to the wellhead. In some embodiments, the work chamber may be maintained at atmospheric pressure. In some embodiments, the tool insertion system can have a retracted position which provides access to a wireline within the work chamber, and an extended position which isolates the work chamber from the tool insertion system, the distal end of the wireline, an isolation valve, and / or the wellhead.

A well tool (1) for use during a well intervention, the well tool (1) comprising an upper sealing arrangement (20a) and a lower sealing arrangement (20b) for enclosing a section of the well in order to allow for increased pressure in that section of the well during supply of fluid by the well tool (1). The sealing arrangements (20a, 20b) comprise retractable elements (21) providing activatable flow guides (21) for allowing for the region of the well at the well tool (1) to be selectively enclosed by actuation of the activatable flow guides (21). The activatable flow guides (21) are configured to have a first deployed configuration in which the force exerted by the activatable flow guides (21) against a casing (2) of the well (7) is set at a first, higher, level to increase the integrity of the seal provided by the upper and lower sealing arrangements (20a, 20b) for static operations when the well tool (1) is stationary in the well (7), and a second deployed configuration in which the force exerted by the activatable flow guides (21) is set at a second, lower, level to reduce an anchoring force and allow for dynamic operations when the well tool (1) may move within the well (7) whilst fluid is still enclosed at increased pressure in the section of the well (7) between the upper sealing arrangement (20a) and lower sealing arrangement (20b).

According to a first aspect of the disclosure, there is provided a frame assembly for moving well intervention equipment relative to a moon pool in a floating vessel, the frame assembly comprising: a main frame configured to be moveable between a main frame parking position and a main frame operating position; a moveable subframe supported on the main frame for supporting and hanging off the well intervention equipment, said moveable subframe being configured to be moveable relative the main frame, between a subframe parking position and a subframe operating position.

A vessel in various examples includes a hull, a moonpool, a tower column extending upward from deck on the hull, the tower column having a column axis, and at least one coupling device which is configured to couple with well intervention equipment, and which is disposed on the tower column so as to be movable around the column axis between a first position for storing the well intervention equipment, eg. above deck, and a second position for locating the well intervention equipment over the moonpool, e.g. for moonpool use. The well intervention equipment is in certain examples coiled tubing equipment comprising at least a coiled tubing injector head and a gooseneck. Examples of the tower and apparatus including the coupling device and methods of arranging the equipment for storage or moonpool use are also described.

A method may include configuring an intervention tool for an intervention operation, disposing the intervention tool into a wellbore, conveying the intervention tool a first location in the wellbore, and performing a seek operation to identify a location of sliding sleeve. The method may further include anchoring the intervention tool to the wellbore, latching the intervention tool to the sliding sleeve, and shifting the sliding sleeve with the intervention tool.

A system for automatic well intervention in a wellbore that includes a robotic tool assembly, and a plurality of subassemblies stored at or within the robotic tool assembly, where the robotic tool assembly is configured to assemble a downhole tool from the plurality of subassemblies, and where a subassembly, of the plurality of subassemblies, includes an energy storage subsystem configured to provide power to the downhole tool.

A system includes an autonomous robotic system and a docking system deployed by a seaborne vessel. The docking system houses the autonomous robotic system and couples to a subsea structure of a subsea system. The subsea structure is disposed on a sea floor. The autonomous robotic system deploys from the docking system into a wellbore of a subsea well of the subsea system. The autonomous robotic system also moves within the wellbore.

Methods related to the field of subsea well intervention, e.g. plug and abandonment, and in particular to methods for plugging of subsea wells and substantiating the quality of the well plug. Method for a barrier setting in a wellbore, the method comprising planning the barrier setting, simulating the planned barrier setting, creating an operation plan for the barrier setting; performing a risk assessment for the operation plan; executing the operation plan setting the barrier in the wellbore; and verifying the barrier in the wellbore.

A method is disclosed for use in a well intervention such as a plug and abandonment operation using a single well tool (1). The well tool (1) comprises a washer module (14). The method comprises: With the well tool (1) positioned so that the washer module (14) is at a perforated section (5b) of a well (7); supplying a fluid under pressure via the washer module (14) into the perforated section (5b) of the well; checking the integrity of the annulus (3) in the region of the perforated section (5b) by means of volume, pressure and / or temperature sensors (24); and performing an additional check of the integrity of the annulus (3) in the region of the perforated section (5b) using an acoustic sensor system (26) for measuring acoustic signals at the well tool (1). The acoustic sensor system (26) includes one or more acoustic sensor(s) located on the well tool (1).

The invention provides a shaft reentry method, and relates to the technical field of underwater well repair intervention equipment. The method comprises the steps that monitoring data of an operation site are collected, dominant strategies are determined according to the monitoring data, and the dominant strategies comprise an optical dominant strategy and an acoustic dominant strategy; performing alignment of the underwater well repair tool and the underwater wellhead based on the dominant strategy, wherein the alignment comprises coarse alignment and fine alignment; and determining that the alignment is completed, and locking the tool end of the underwater workover tool with the underwater wellhead. According to the embodiment of the invention, the dependence of shaft reentry on personal experience can be effectively reduced, the operation threshold is reduced, the response speed is high, the reliability is high, the probability of equipment damage is reduced, and the safety and the operation efficiency of an underwater well repair tool under severe sea conditions are greatly improved.

A pumping system is designed for deployment and retrieval through the production tubing in a live well intervention. The pumping system includes a pump driven by a motor, which may be an integrated motor or a separated motor in which the stator and rotor are separated by the production tubing. The pumping system can be provided power through a reinforced power cable that is capable of supporting the weight of some combination of the motor and pump, or through a standard power cable that is not designed to carry the weight of additional downhole components.

A method can include receiving inputs for a well; generating scenarios for the well using the inputs; instructing a simulator to simulate generated scenarios; receiving simulation results for at least some of the generated scenarios; and assessing the received simulation results for implementation of one or more well actions for the well.

A vacuum insulated container has a double wall enclosure shaped to define an enclosed volume. The enclosed volume is open at at least one end. An annular space between inner and outer walls of the double wall enclosure is evacuated. A thermally sensitive device is disposed in the enclosed volume. A thermal mass is disposed in the enclosed volume and in thermal contact with the thermally sensitive device. An insulator is disposed in the enclosed volume and in contact with the thermal mass on a side of the thermal mass opposed to the thermally sensitive device. At least one thermoelectric cooling element is disposed in the enclosed volume having a cold side oriented toward the insulator and a hot side oriented away from the insulator and in thermal contact with a thermally conductive plug disposed in the at least one open end so as to close the enclosed volume.

A downhole tool (1) for well interventions is disclosed. The downhole tool (1) comprises a mandrel (10) comprising an inner bore (11) and at least one flow opening (12) for fluid communication between the inner bore (11) and a region outside the downhole tool (1). The downhole tool (1) also comprises a first flow guide assembly (20) comprising one or more radially expandable barrier member(s) (21) arranged around the mandrel (10). The one or more radially expandable barrier member(s) (21) are configurable between a radially unexpanded state and a radially expanded state. Furthermore, the downhole tool (1) comprises a pressure regulator (40) configured to allow fluid communication between the inner bore (11) and the region outside the downhole tool (1), via the at least one flow opening (12), when fluid pressure in the inner bore (11) reaches a threshold pressure.

Because it is a continuous monitoring process with strict quality control from the raw materials, this process allows the selection of the desired particle size for the requested product. The alkalization of the raw materials for modification ensures a solubility greater than 97% and results in a high-quality product mix in acidic solutions. It provides a wide range of particles for the prevention and control of lost circulation, reinforces the mud through bridging, generating low permeability, and is compatible with water-based and oil-based drilling systems. This provides optimal conditions in drilling operations to reduce or eliminate partial and / or total circulation losses.It has a range of products with granulometries: fine, medium, coarse and extra coarse for the production zone of the oil industry, these presentations comply with the parameters required by PEMEX, "single operational guide to determine the technical specifications of ultra-low invasion plugs for well interventions, First Version, July 2021."

A vacuum insulated container has a double wall enclosure shaped to define an enclosed volume. The enclosed volume is open at at least one end. An annular space between inner and outer walls of the double wall enclosure is evacuated. A thermally sensitive device is disposed in the enclosed volume. A thermal mass is disposed in the enclosed volume and in thermal contact with the thermally sensitive device. An insulator is disposed in the enclosed volume and in contact with the thermal mass on a side of the thermal mass opposed to the thermally sensitive device. At least one thermoelectric cooling element is disposed in the enclosed volume having a cold side oriented toward the insulator and a hot side oriented away from the insulator and in thermal contact with a thermally conductive plug disposed in the at least one open end so as to close the enclosed volume.

A vessel in various examples has a hull, a moonpool, a handling tower for handling well intervention equipment above moonpool, a mount arranged outside, or on an outside of, the handling tower, and a guider body having first and second ends and at least one hang-off portion for hanging off well intervention equipment, wherein the first end is connected to the mount and the second end extends away from the mount, the guider body being rotatable relative to the mount about a vertical axis, so as thereby to move the hang-off portion of the guider body relative to the handling tower, in use, between a parking position in which the well intervention equipment is hung off outside the handling tower and at least one operational position in which the well intervention equipment is hung off above the moonpool Also described are examples of apparatus and methods using the apparatus including the guider body or an articulated guider body for preparing for the deployment of coiled tubing from the vessel.

An intervention system is provided for a subsea well operation. The intervention system includes a first coupling portion 26, a second coupling portion 30 releasably coupled to the first coupling port

An intervention system is provided for a subsea well operation. The intervention system includes a first coupling portion, a second coupling portion releasably coupled to the first coupling portion, a monitor tether coupled to one of the first coupling portion and the second coupling portion, and a control system. The first coupling portion and the second coupling portion provide fluid communication while the first coupling portion and the second coupling portion are connected to one another. The monitor tether transmits an electrical current while the first coupling portion and the second coupling portion are connected to one another. The control system is operable to detect a change in current in the monitor tether indicative of disconnection between the first coupling portion and the second coupling portion, and, in response to detecting a change in current in the monitor tether indicative of disconnection, interrupt fluid flow relative to the subsea well.

A system including an autonomous robotic system 12 and a docking system 28, deployed by a seaborne vessel (fig. 1, 30). The docking system houses the autonomous robot system and allows passage of the

A downhole tool (1, 101) for well interventions is disclosed. The downhole tool (1, 101) comprises a mandrel (10) comprising an inner bore (11) and a first flow guide assembly (20). The first flow guide assembly (20) comprises a radially expandable barrier member (21) and a piston assembly (22). The radially expandable barrier member (21) is arranged around the mandrel (10) and configurable between a radially unexpanded state and a radially expanded state. Furthermore, the barrier member (21) defines an annulus (28) around the mandrel (10) and the annulus (28) is in fluid communication with the inner bore (11) of the mandrel (10) for urging the barrier member (21) toward the radially expanded state as fluid pressure in the inner bore (11) is increased. The piston assembly (22) is in fluid communication with the inner bore (11) and comprises a piston (23) arranged for urging the barrier member (21) toward the radially expanded state as fluid pressure in the inner bore (11) is increased. A method of using the downhole tool (1, 101) is also disclosed.

The disclosure is applied in the area of subsea operations in oil well interventions, and refers to a reverse flow selector system in umbilical including: an upper tubular portion having vertical and horizontal portions; a lower tubular portion having vertical and horizontal portions; a C-shaped intermediate tubular portion connected to the horizontal portion of the upper tubular portion and to the horizontal portion of the lower tubular portion; a filter element connected to a lower end of the vertical portion of the upper tubular portion and to an upper end of the vertical portion of the lower tubular portion; a first valve connected to the vertical portion of the upper tubular portion upstream of the filter element; and a second valve connected to the intermediate tubular portion; wherein each valve is configured to open and close to define at least one fluid flow circulation path in the system.

Disclosed embodiments relate to systems for providing well intervention for a subsea wellhead. For example, the system can comprise a tool insertion system and a subsea work chamber, with the tool insertion system operatively coupled to the subsea work chamber and to the wellhead. In embodiments, both the work chamber and the tool insertion system can be disposed subsea, for example in proximity to the wellhead. In some embodiments, the work chamber may be maintained at atmospheric pressure. In some embodiments, the tool insertion system can have a retracted position which provides access to a wireline within the work chamber, and an extended position which isolates the work chamber from the tool insertion system, the distal end of the wireline, an isolation valve, and / or the wellhead.

Disclosed embodiments relate to systems for providing well intervention for a subsea wellhead. For example, the system can comprise a tool insertion system and a subsea work chamber, with the tool insertion system operatively coupled to the subsea work chamber and to the wellhead. In embodiments, both the work chamber and the tool insertion system can be disposed subsea, for example in proximity to the wellhead. In some embodiments, the work chamber may be maintained at atmospheric pressure. In some embodiments, the tool insertion system can have a retracted position which provides access to a wireline within the work chamber, and an extended position which isolates the work chamber from the tool insertion system, the distal end of the wireline, an isolation valve, and / or the wellhead.

A system includes an autonomous robotic system and a docking system deployed by a seaborne vessel. The docking system houses the autonomous robotic system and couples to a subsea structure of a subsea system. The subsea structure is disposed on a sea floor. The autonomous robotic system deploys from the docking system into a wellbore of a subsea well of the subsea system. The autonomous robotic system also moves within the wellbore.