Abstract: A plurality of PODs for a lower marine riser package (LMRP) is disclosed. At least a first subsea electronics module (SEM) and a second SEM are provided in a first POD of the plurality of PODs. At least a third SEM and a fourth SEM are provided in a second pod. The third SEM is redundant with the first SEM and the fourth SEM is redundant with the second SEM. At least one selector circuit is provided to transmit an SEM select signal that electrically activates or electrically deactivates the first SEM separately from the third SEM. As a result, each of the SEMs in the plurality of PODs may be separately activated or deactivated without a need to turn off fluid provided to hydraulic valves in the first and the second PODs that are controlled by corresponding SEMs.

Abstract: A system that includes a wellhead. The wellhead defines a bore. A hanger system is positioned within the wellhead. The hanger system includes a piston angled relative to a longitudinal axis of the bore. A first spring biases the piston in a first direction. The piston contacts a slip segment to couple the slip segment to a casing string.

Abstract: A packer assembly for an annular blowout preventer includes an annular packer and a plurality of inserts arranged circumferentially about the annular packer. The plurality of inserts are curved along an axial axis of the packer assembly and are configured to rotate radially inwardly to enable the packer assembly to move from an open position in which the packer assembly enables fluid flow through a central bore to a closed position in which the packer assembly blocks fluid flow through the central bore.

Abstract: Apparatus for deploying coiled tubing into a wellbore include a neck portion extending between end connections, where the end connections are configured to be attached to a coiled tubing tool string, and a main flow passage, at least one secondary flow passage and at least one electrical device passageway extending through the neck portion and the end connections. A wireline cable or an optical fiber is disposed in the electrical device passageway, and a well treatment fluid flows through the main flow passage. The main flow passage may have a substantially circular cross sectional shape. The apparatus includes at least one secondary flow passage having a substantially circular cross sectional shape, which may be a tube disposed within the main flow passage. The electrical device passageway may in some cases be a tube disposed within the main flow passage.

Abstract: A packer box for use in petroleum drilling is described, in which a rotatable packer element arranged centrically in a packer retainer that is orientable and lockable in a sealing position in a housing in the packer box is arranged to seal against a passing drill string, the packer element comprising a mounting device provided with packer slide rings at the ends of the mounting device and being in sealing abutment against slide rings arranged internally in the packer retainer, and an internal, flexible packer sleeve which is arranged to abut sealingly against the drill string with an external pressure from a fluid in a volume-compensated annular space in the packer retainer, wherein the mounting device includes several channels perforating the mounting device, and clamping devices for fixing the packer sleeve to the end portions of the mounting device. A method of installing or withdrawing a packer element in, respectively from, a packer box is described as well.

Abstract: Assemblies and methods are provided for retrieving a sealing assembly from within a tubing string positioned downhole in a wellbore. The sealing assembly may include a plug that may include a non-elastomeric material at least partially surrounding an elastomeric material. The sealing assembly may be run downhole in the wellbore with the plug at an original diameter. The sealing assembly may be set such that the plug is expanded to a set diameter. The retrieval tool may be coupled to the sealing assembly and may be extended in a first direction. The extension of the retrieval tool may lengthen the sealing assembly. The lengthening of the sealing assembly may extend the length of the plug and may thereby reduce the diameter of the plug. In some aspects, the retrieval tool may reduce the diameter of the plug back to the original diameter.

Abstract: A packer for sealing in a tubular includes a mandrel on which a packing element is disposed between booster pistons. Each piston defines a sealed chamber with housed areas of the mandrel. A setting force compresses packing element between the booster piston, which shear free. Ratchet mechanisms including ratchet sleeves and body lock rings disposed between the pistons and the housed areas initially allow the pistons to move in a direction away from the packing element, which expands the respective sealed chamber. Thereafter, in response to a pressure differential across the respective sealed chamber, the ratchet mechanisms each permit urging of the respective piston toward the packing element while preventing retraction of respective piston in the opposite direction.

Abstract: A valve arrangement in a tubular having a first one way valve configured to prevent fluid flow in the tubular in a first direction; and a second one way valve configured to prevent fluid flow in the tubular in a second, opposite direction.

Abstract: A casing landing and cementing tool has a wellbore obstruction-clearing tool at a downhole end thereof and a check valve uphole of any fluid vulnerable components to isolate the vulnerable components from the threat of cement incursion. The check valve is manufactured of drillable materials, the plunger being axially actuable but non-rotatable, the valve body being threadably secured within the tool. In one aspect the tool is a sleeve bit rotatably and reciprocally coupled about a mandrel secured to a non-rotating casing string, the check valve located in the mandrel. In another aspect, the tool is a bit coupled to a rotatable casing string, the check valve located in the bit.

Abstract: A filter device housed within a body component. The filter device can include an outer filter and an inner filter positioned coaxially within the outer filter. The outer and inner filters may be composed of a material having mesh, slots, holes, or any other openings being of a sufficient size and shape to restrict passage of items of a predetermined size or larger. Formed between the inner and outer filters is a first annular space into which fluid that is provided down the drill string may enter. The filter device may also include a valve within the internal bore which regulates passage of wellbore fluid provided to the drill string, or for a wireline or slickline, to pass through the filter device in order to access other components of the drill string downhole from the filter device.

Abstract: A “passive” apparatus and method for isolating flow within a thermal wellbore wherein inflow apertures are plugged with a temporary fusible alloy plug that can be selectively removed by increasing the wellbore temperature.

Abstract: A downhole tool comprises a hollow body having a wall and a port in the wall, and a closing sleeve movable relative to the body to open and close the port. A seal is provided between the body and the sleeve and is configured to hold differential pressure. An isolation member may be deployed in the tool to isolate the seal from differential pressure and close the port. The isolation member may be deployed following initiation of a tool activation process, a successful outcome of the process being translating the closing sleeve and closing the port, and positioning the seal to hold a differential pressure. If it is detected that the outcome has not been achieved, the isolation member is deployed to isolate the seal from differential pressure and close the port.

Abstract: A flow control assembly includes a housing defining flow port that place an interior of the housing in fluid communication with an exterior of the housing, and a sliding sleeve defining sleeve ports and movably positioned within the interior between a first position, where fluid communication between the interior and the exterior via the flow ports is prevented, and a second positon, where fluid communication between the interior and the exterior is facilitated through the sleeve ports and the flow ports. A piston and a slip device are movably arranged within a piston chamber defined between the housing and the sliding sleeve. The piston has a first end exposed to an interior pressure and a second end exposed to an exterior pressure via chamber ports defined in the housing. A biasing device is also positioned within the piston chamber.

Abstract: A downhole equalization assembly permits selective and remote opening of at least one downhole port or pathway to allow communication of pressure and/or fluid flow from inside a pressure containing system (such as, for example, a tubular pipe or other pressure containment system) to the outside of the containment system, or vice versa. A control device generating a magnetic field is inserted into a well and conveyed to a downhole equalization assembly. When the control device passes through an equalization assembly, an electronic counter is triggered. When a predetermined counter number is reached, a sliding sleeve is shifted, thereby exposing ports and/or pathways extending between the inside and outside of the equalization assembly. No physical contact or mechanical interference is required between the control device and any other components in order to actuate the equalization assembly.

Abstract: A downhole isolation tool for insertion in a wellbore and seated engagement to a downhole assembly, for allowing, when a sliding sleeve thereof is slidably positioned in a first position and when coupled to a lower end of said pump apparatus, fluids within a hydrocarbon formation to be drawn through such tool and allowed to pass to the pump apparatus for pumping uphole, and when such sliding sleeve is positioned in a second position and decoupled from said lower end of the pump assembly, for preventing said fluids from passing therethrough and uphole.

Abstract: A system for controlling flow and access in multilateral completions is disclosed. The system includes a flow control sub having a single bore portion and a dual bore portion with a sleeve disposed therein. The flow control sub further includes a channel in an inner cylindrical surface, and the sleeve includes protrusions configured to engage the channel, which may be extendable. The channel provides paths for the protrusions between three different positions where two positions allow access to one or the other bore of the dual bore portion and a third position allows flow from both bores of the dual bore portion to co-mingle and enter the flow control sub. A run-in tool may be used to engage the sleeve and apply a pulling or pushing force to move the sleeve along the various channel paths to control flow through the flow control sub.

Abstract: A system and method for delivering heat to a fluid in a fluid production pipeline. Particles are injected into a line adjacent the fluid production pipeline. The particles include a microencapsulated liquid exothermic phase change material configured to undergo a phase change by solidification and release heat at a selected temperature. The released heat is transferred to the fluid production pipeline.

Abstract: A system and method are able to generate and dissipate heat internally to a certain submarine equipment by applying electric power, aiming to aid in the remediation and treatment of hydrate, which was formed in its inside, aiming its effective spreading. The said system is specially suitable to be used in submarine equipments involved in the fluids flowing linked to Oil and Gas Industry, and includes a cavity filled with a fluid suitable for heat transfer, in which a penetrator is installed thereon interlinking an encapsulated resistance to a compensated hose filled with dielectric oil housing inner electrical wires. The said hose has an electrical connector suitable for operating with ROV in its end.

Abstract: The present disclosure generally relates to a modular connection system for a top drive. The modular connection system may include two tubular components, each having a bore, a seal profile, and two or more load transfer features. The first tubular component may be inserted to the second tubular component to make a connection to transfer fluid, axial loads, and torsional loads. Each of the two tubular components may also include a coupler configured to transfer pressured fluid, data, or other signals.

Abstract: A carriage arranged to walk along an elongate member while carrying a payload includes individually-operable clamps that are spaced axially along a common longitudinal axis. An axially-extensible frame connects the clamps. At least one of the clamps is attached to the frame via a rotationally-displaceable coupling for relative angular movement between that clamp and the frame about the longitudinal axis. The carriage can carry the payload to a subsea worksite by opening and closing the clamps to release and grip the elongate member in a sequence that includes moving the leading clamp forward when the leading clamp is open and moving the trailing clamp forward when the leading clamp is closed. At the worksite, installation force can be applied to the payload in a forward direction by moving the leading clamp forward when the leading clamp is open and the trailing clamp is closed.

Abstract: A thermal battery positioned in a wellbore can be force activated by a device. The device can include a body coupled to a thermal battery positioned in a wellbore. The body can include a piston retained at a first position in an inner area of the body. The piston can move from the first position to a second position in response to a force applied to the body. The thermal battery can be activated by moving the piston to the second position.

Abstract: In some aspects, the present disclosure includes systems and methods for determining and delivering diverting material to dominant fractures in a stage of a subterranean formation. The method includes creating or extending a plurality of fractures in a stage of a subterranean formation; pumping fracturing fluid to the plurality of fractures; identifying dominant fractures among the plurality of fractures; determining a desired amount of diverters to deliver to the dominant fractures; and pumping the determined amount of diverters to the dominant fractures so as to redistribute the flow of fracturing fluid between the plurality of fractures.

Abstract: A reservoir stimulation tool for stimulating a formation surrounding a wellbore having an inner wall includes: a tubular string including an outer wall defining therein an inner bore, the tubular string being configured to be inserted into the wellbore so as to form an annular space between the tubular string and the inner wall of the wellbore, a plurality of ports formed in the outer wall of the tubular string; a plurality of port valves for opening or closing the ports; and a plurality of packers coupled to the tubular string, wherein each packer is configured to be expanded in order to engage the inner wall of the wellbore, thereby isolating two or more longitudinal segments of the annular space from each other.

Abstract: Methods for making efficient use of steam in a steam-assisted gravity drainage (SAGD) process for recovering heavy oils from tar sands and similar petroleum deposits are disclosed. The methods utilize a surfactant to generate steam foam in ways that maximize efficient use of steam. In some aspects, steam foam is used in water layers or gas caps that reside above steam chambers to prevent loss of steam from the steam chamber. The predominant use of relatively dry steam in SAGD processes makes it challenging to find ways to introduce surfactants and generate steam foam. However, decreasing the mobility of the steam by converting at least some of it to foam allows the wellbore and steam chambers above the injection site to be more fully developed, provides for more effective heat transfer to the heavy oil and rock, improves production, and allows recovery of the heavy oil with a minimum amount of steam usage.

Abstract: A method of acidizing a geological formation is provided. A method of determining an effectiveness of the acidizing with NMR spectroscopy is also provided. Various embodiments of the method of acidizing and the method of determining the effectiveness of the acidizing are specified.

Abstract: There is provided apparatuses, and related systems, for effecting production of oil from a reservoir. A separator is provided and configured to mitigate problems with solid debris accumulation within the wellbore. A system is also provided, including the separator, and is disposed within a wellbore. A pump is also provided, and disposed in fluid communication with, and downstream from, the separator, for receiving reservoir fluids from which gaseous and solid material have been separated by the separator.

Abstract: A method of automated preventive and predictive maintenance for downhole valves in a well system includes receiving, at a plurality of first times, first diagnostics data of the plurality of downhole valves, where each downhole valve is at a respective first valve position at a respective first time, and the diagnostics data represents a valve condition of each downhole valve at a respective valve position and at a respective time. The method also includes receiving, at a plurality of second times, second diagnostics data of the plurality of downhole valves, where each downhole valve has been moved from the respective first valve position at the respective first time to a respective second valve position at a respective second time. The first diagnostics data and the second diagnostics data are compared. Based on results of comparing, a valve maintenance operation is selected for each downhole valve.

Abstract: A survey tool for attachment to a drill string for inserting the survey tool into a borehole, the survey tool comprising a housing having a proximal end adapted for attachment to the drill string and a bore traversing the housing adapted to receive fluid from the drill string, and a piston adapted to be received within the bore, the piston being adapted to be selectively displaced between at least a first condition and a second condition, wherein in the first condition the fluid exists the housing at a first location and in the second condition the fluid exists the housing at a second location.

Abstract: A sensor system includes interconnected and axially spaced apart sensor devices deployed along an outer surface of a downhole tool string. The sensor devices including a sensor disposed with a protective housing and control electronics located remote from the sensor devices and operationally connected to the sensors.

Abstract: A computing system, non-transitory computer-readable medium, and a method for surveying a wellbore. The method includes receiving a first survey of the wellbore from a first survey tool, receiving a second survey of the wellbore form a second survey tool, determining a first uncertainty of the first survey tool and a second uncertainty of the second survey tool, determining a first growth rate of the first uncertainty and a second growth rate of the second uncertainty, and generating a combined survey based at least partially on the first and second growth rates.

Abstract: The disclosure relates to a drilling rig for cutting a vertical trench in the ground, the rig comprising: a frame; and a verticality measurement device comprising a first cable and at least a first inclinometer, one end of the first cable being connected to the top portion of the frame and to the first inclinometer. According to the disclosure, the drilling rig has a first connection device comprising: a support fastened to the frame; and a body connected to the support via a swivel link; the first inclinometer and the first cable are fastened to the body on opposite sides of the swivel link.

Abstract: A measurement while drilling system including a first module and a second module. The first module situated at a distal end of a drill string and including a downhole processor configured to determine that the drill string is one of on a drill plan and off the drill plan, and a downhole communication module communicatively coupled to the downhole processor to transmit signals. The second module situated at a proximal end of the drill string and including an uphole communication module configured to receive the signals. Where the downhole processor is configured to transmit non-compressed data if the drill string is off the drill plan and compressed data if the drill string is on the drill plan.

Abstract: A pressure wave system having a tubular member, a signal source, a sensor, and a source of noise, has a noise interference system employing one or more a lateral branches to cancel pressure noise, and/or amplify or filter the pressure wave signal. A related method generates the pressure wave signal, connects the lateral branch or branches to amplify or filter the signal and/or cancel noise from the system, and receives the signal or a response of the system to the signal. The lateral branches are simple pipe stubs or loops that can be made using ordinary piping components, or are more complex designs.

Abstract: Zonal isolation devices including sensing and wireless telemetry and methods of utilizing the same are disclosed herein. The zonal isolation devices include an isolation body, a sensor, and a wireless telemetry device. The zonal isolation devices may be incorporated into a hydrocarbon well that also includes a wellbore and a wireless data transmission network. The methods include methods of conveying a wireless signal within a well. The methods include detecting a property of the well, transmitting a wireless output signal, conveying the wireless output signal, and receiving the wireless output signal.

Abstract: Methods and systems for conducting downhole operations including collecting downhole dynamic event data using a downhole tool, wherein the downhole dynamic event data is time-domain data, processing the collected downhole dynamic event data using a computing system located downhole to convert the time-domain data into frequency-domain data, and extracting digital filter coefficients from the frequency-domain data.

Abstract: In an embodiment, a method is performed by a computer system. The method includes integrating a series of data inputs related to a well. The series of data inputs includes at least one real-time data input and at least one non-real-time data input. The method further includes based, at least in part, on a result of the integrating, facilitating a real-time display of performance data for the well. The real-time display includes information related to at least one of hydraulic surveillance and torque-and-drag surveillance.

Abstract: In an exemplary embodiment, a method is disclosed for developing an N-phasic finite element model for performing fully coupled analyses of multi-phase compositional fluid flow and heat flow in nonlinearly deforming porous solid media with time-dependent failure. The method can include formulating a finite element model of the behavior of a coupled solid-fluid formation, having complex geometry and behavior, and applying the model to derive the response of the formation in the form of one or more displacement fields for the solid phases and one or more pressure fields for the fluid phases in a zone of interest in a formation. In an exemplary embodiment, a system is disclosed for estimating the uncertainties in the derived displacement and pressure field solutions for the response of the fully coupled solid-fluid phases.

Abstract: Hydraulic fracturing of a geological formation is performed by injection of a proppant mixture into the geological formation to form fractures in the geological formation. The proppant mixture includes at least a liquid, proppant, and proppant additive particles. The hydraulic fracturing results in a presence of the proppant additive particles within the formed fractures, wherein the proppant additive particles are configured with a first complex conductivity that is measurably different than a second complex conductivity exhibited by materials comprising the geological formation. The formed fractures can then be imaged and mapped in the geological formation with electromagnetic energy at one or more frequencies in a manner so that the proppant additive particles function as a contrast agent due to the first complex conductivity of the proppant additive particles being measurably different from the second complex conductivity.

Abstract: A method for the determination of the oil content for solids recovered from a wellbore is provided. The method comprises providing the solids recovered from the wellbore and measuring the thermal conductivity of the solids recovered from the wellbore using a thermal conductivity probe. The method further comprises using the thermal conductivity measurement to determine the oil content in the solids recovered from the wellbore.

Abstract: A device and method for collecting sample fluids from an underground source which includes sample wells terminating in a corrugated conduit and sieve. The sampling regions for each sample well is separated by a grout or expanding seal barrier. Negative pressure is optionally applied to extract fluids from the underground matrix for sampling. The device can also be used for remediating an environmental contaminant from soil or aquifers. Upon identification of at least one environmental contaminant, a remediation composition is injected into the soil or aquifer using the sampling wells of the device. The remediation fluids can be directed to specific locations by selectively utilizing one or more sampling wells to inject the remediation fluid.

Abstract: A cutting device for engaging a rock face includes a disc body supported for rotation about an axis of rotation, and a plurality of peripheral portions removably secured to the disc body. Each of the peripheral portions including a plurality of cutting bits positioned on a peripheral edge. The peripheral edge of each peripheral portion is aligned with the peripheral edges of adjacent peripheral portions.

Abstract: A method and apparatus for determining a parameter of a production fluid in a wellbore by providing an initially blocked isolated communication path between a sensor and an aperture formed in a sleeve. The isolated communication path is subsequently unblocked to allow measurements of the parameter of the production fluid.

Abstract: A crank and connecting rod mechanism having an angularly disposed connecting rod and mirror image gear sets, each comprising: a crank gear rotatably mounted on a crank gear shaft, having a crankpin pivotally connected to and driven by the connecting rod, the crankpin following the path of a roulette of a centered trochoid about a first stationary gear as the crank gear is driven about the first stationary gear and a crankshaft driven gear is driven about a second stationary gear, a counterbalanced radial arm affixed to a drive shaft at a pivot point of the counterbalanced radial arm, the counterbalanced radial arm driving the drive shaft at the pivot point and the crank gear shaft at an outer radial arm bearing, the drive shaft driving a drive shaft gear, which drives an output gear that drives an output shaft.

Abstract: In a scroll fluid machine, a thinned section (26) is provided in correspondence with a position at which the wrap height of a spiral wrap (15B, 16B) changes due to a step part. The thinned section (26) is provided on the front-side surface or the rear-side surface of a tooth tip section of at least one of the spiral wraps (15B, 16B) of at least one of partner scrolls (15, 16) respectively engaging with scrolls (15, 16). The thinned section (26) is provided in the direction in which the wrap thickness decreases so as to extend over at least a reduced-machining-accuracy area (27), which is an area where the machining becomes discontinuous due to at least a change in the wrap height. Thus, a contact failure between the spiral wraps (15B, 16B) is avoided in the area where the machining accuracy relatively decreases as a result of increasing the machining speed, thereby achieving both improved productivity and maintained performance.

Abstract: A reversing mechanism for a pneumatically or hydraulically powered tool having a rotor adapted to rotate in either of first and second rotational directions. The reversing mechanism allows a user to actuate a button and rotate a valve to direct air flow through the tool. By pressing the button, the button will move a base laterally, and in doing so, rotates the valve. Rotating the valve then aligns a barrier of the valve in a direction tangential to the selected rotational direction of the tool, better directing forced air or fluid and more efficiently distributing the air or fluid in the selected rotational direction.

Abstract: A rotary fluid pressure device, such as a low-speed, high-torque gerotor motor, is provided with a valve drive shaft that is partially inserted into and engaged with a main drive shaft as the main drive shaft engages a rotating output shaft and engages a rotating and orbiting star member of a positive displacement device. The device is also provided with a drive retainer configured to retain the engagement of the main drive shaft and the valve drive shaft.

Abstract: A turbine blade having an airfoil profile substantially in accordance with Cartesian coordinate values of X, Y, and Z set forth in Table 1, where the X and Y values are in inches and the Z values are non-dimensional values from 0 to 1 and convertible to Z distances in inches by multiplying the Z values by the height of the airfoil in inches. The X and Y values are distances which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form an airfoil shape. The X, Y, and Z distances may be scaled as a function of the same constant number and the X, Y, and Z distances lie within an envelope of approximately +/?0.032 inches in directions normal to the airfoil.

Abstract: Disclosed is a blade/vane cascade segment of a blade/vane cascade of a turbomachine, which comprises at least two blade/vane elements defining an axial cascade width, and a stage with a stage surface, as well as a stage edge on the inflow side. The stage surface has an elevation extending up to the pressure side of a first blade/vane element and a depression extending up to the suction side of the other blade/vane. At least one highest point of the elevation and at least one lowest point of the depression each lie at least 30% and at most 60% of the axial cascade width downstream of the inflow edges of the blade/vane elements. In this case, the elevation and the depression each come close to the stage edge on the inflow side.

Abstract: Embodiments of the invention relate generally to rotary machines and, more particularly, to the control of wheel space purge air in gas turbines. In one embodiment, the invention provides a turbine bucket comprising: a platform portion; an airfoil extending radially outward from the platform portion; a platform lip extending axially from the platform portion; and a plurality of voids disposed along a surface of the platform lip.

Abstract: An airfoil of a turbine engine includes pressure and suction sides and extends in a radial direction from a 0% span position to a 100% span position. The airfoil has a relationship between a stagger angle and span position that defines a curve with a stagger angle that is greater than 32° from 90% span to 100% span.