Abstract: An earth-boring tool includes a body having a longitudinal axis. The earth-boring tool also includes blades extending longitudinally and generally radially from the body. The earth-boring tool may also include one or more polished superabrasive cutting elements located on at least one blade in at least one region of a face of the earth-boring tool, and one or more non-polished superabrasive cutting elements located on the at least one blade in at least another region of the face of the earth-boring tool. Methods include drilling a subterranean formation including engaging a formation with one or more polished superabrasive cutting elements and one or more non-polished superabrasive cutting elements of the earth-boring tool secured at selected locations of one or more regions of blades extending from a body of the earth-boring tool.

Abstract: Cutting elements include a diamond-bonded body attached with a substrate. The substrate has a coercivity of greater than about 200 Oe, and has a magnetic saturation of from about 73 to 90. The diamond-bonded body has a compressive stress at the surface of greater than about 0.9 GPa after heat treatment, and greater than about 1.2 GPa prior to heat treatment.

Abstract: Tubular wear volume is determined using adjustable wear factors. The wear factors are applied as a function of the side force factor, friction factor, and/or temperature factor. The adjusted wear factors are then used to determine the tubular wear volume.

Abstract: A lifting mast assembly includes telescoping load bearing arms pivotably coupled to a support base and configured to pivot in unison. Each telescoping arm includes a first arm section and an aligned second arm section. The first arm sections are configured to telescope in unison with one another. Likewise, the second arm sections are configured to telescope in unison with one another. Each first arm section may telescope independently of the second arm section with which it is coaxially aligned. A first support member is coupled to each of the first arm sections, and a second support member is coupled to each of the second arm sections. Different loads can be supported on the first and second support members simultaneously.

Abstract: Support systems, apparatus and methods for use with well structures, which may be used to reduce the cost and/or risk of performing procedures on assets, for example, prior to or during well abandonment. A support system includes an actuation system for use with a support member. The support member may be configured for complementary engagement with the actuation system. A cross-over section is configured for use at a lower end of the support member and includes a body portion and a well structure portion. The bore of the cross-over section changes from a first diameter at the body portion to a second diameter at the well structure portion, the second diameter being greater than the first diameter.

Abstract: Systems capable of compliantly coupling electrical assemblies located within drill string modules or drill collars to one another can include male and female mating portions, wire-carrying hollow tubes including helical portions thereof, a plurality of wires, and interconnection systems for interconnecting the plurality of wires. Related methods can include manufacturing the drill string modules and various components thereof, coupling the drill string modules to one another, and tripping the drill string modules into a wellbore.

Abstract: A tubular member includes a tube body, a tube end, an exterior surface, an interior surface, a nominal wall thickness, a longitudinal axis, a welded seam, and a patch of material. The welded seam forms an arcuate portion of the interior surface, and the patch covers a portion of the interior surface that includes a portion of the welded seam, extending from the tube end to an axially spaced first location. The resulting interior surface from the tube end to the axially spaced first location has a uniform inside diameter.

Abstract: A downhole tool includes a first sub, a second sub, and a clutch assembly positioned between the first sub and the second sub. The clutch assembly is configured to allow rotation between the first sub and the second sub in a first direction, and to prevent rotation between the first sub and the second sub in a second, opposite direction, when a compression force is applied to the downhole tool, when a tension force is applied to the downhole tool, and when no axial force is applied to the downhole tool.

Abstract: An adjustable hydraulic coupling device allows simultaneously mounting of different parts of a downhole drilling tool to the drill string near its upper and lower extremities. This top- and bottom-mounting is made to points on the drill string separated by an indeterminate length. The coupling device allows a mechanical and sealed fluid connection between two portions of the tool, and allows assembling of both portions of the drilling tool into one functional unit, and allows both axial translation and rotational motion therebetween. A cylindrical protruding tube is attached to the portion of the drilling tool mounted at its upper extremity while a mating cylindrical tube is attached to the part of the drilling tool mounted near the bottom. During assembly, the smaller tube enters the larger tube and provides a sealed fluid path and also allows for the engagement length of the assembly to vary as required.

Abstract: A mill for use in a wellbore includes a tubular housing having a bore therethrough and a plurality of eccentrically arranged pockets formed in a wall thereof and an arm disposed in each pocket. Each arm has a body portion and a blade portion extending from an outer surface of the body portion and is movable between an extended position and a retracted position. The mill further includes cutters disposed along each blade portion and a block disposed in each pocket and connected to the housing. Each block has a guide engaged with a mating guide of the respective body portion and an inner passage for providing fluid communication between the housing bore and the respective pocket. The mill further includes an actuator for extending the arms.

Abstract: Drill string components having at least two threads extending around a body. The leading end of each thread can have a configuration having increased strength and resistance to jamming and cross-threading. In particular, the leading end of each thread can comprise a planar surface normal to the body. The leading end of each thread can provide an abrupt transition to full thread depth that helps reduce or eliminate cross-threading and can be oriented at an angle relative to the axis of the drill string component. Each thread can further provide at least one of a variable thread width and a variable thread pitch configured to create an axial progressive fit. Each thread can also provide a cylindrical thread root and a thread crest that circumscribes a frusta-cone over at least a portion of the axial length of the threads configured to create a radial progressive fit.

Abstract: A method for removing a component of a heave compensation system includes decoupling a cylinder assembly from a crown block, the cylinder assembly configured to displace the crown block in response to a heave motion of a drilling vessel supporting the heave compensation system, coupling the cylinder assembly to a support structure via a cable, and using the cable to lower the cylinder assembly through an internal volume of a derrick of the drilling vessel to a rig floor of the drilling vessel.

Abstract: Present embodiments are directed to systems and methods for efficiently connecting drill pipe (i.e., referred to as the landing string) to a top drive mud line when running liners into a well. For example, in certain embodiments, a drill pipe fill-up tool includes an axially-extendable mud cylinder coupled to an upper mounting plate and a lower mounting plate. The mud cylinder includes a mud cavity configured to be fluidly connected to a mud line of a top drive of drilling system. The drill pipe fill-up tool also includes an actuating cylinder coupled to the upper mounting plate and the lower mounting plate. The actuating cylinder is configured to axially extend the mud cylinder. The drill pipe fill-up tool further includes a seal and guide assembly coupled to the mud cylinder. The seal and guide assembly is configured to engage with a drill pipe and to fluidly connect the mud cavity of the mud cylinder to an interior of the drill pipe.

Abstract: A system for use in a mineral extraction system includes a spinner assembly having a motor configured to drive rotation of a roller shaft. The spinner assembly also includes a roller non-rotatably coupled to the roller shaft and configured to contact a first tubular structure, and rotation of the roller is configured to cause rotation of the first tubular structure until the first tubular structure is spun into a second tubular structure. The spinner assembly further includes a detection wheel coupled to the roller shaft and configured to contact the first tubular structure, and the detection wheel is configured to rotate with the first tubular structure and to rotate independently of the roller. The spinner assembly further includes a sensor configured to detect rotation of the detection wheel.

Abstract: Techniques and systems to provide automatic positioning of a tripping apparatus. A system may include a sensor configured to detect a physical characteristic of a tubular string moving past the sensor and generate a signal indicative of the physical characteristic. The system may also include a processing device configured to process the signal indicative of the physical characteristic, determine whether the processed signal is indicative of a deviation of the tubular string, and generate output data utilized to automatically position a tripping apparatus at a location of the deviation on the tubular string.

Abstract: A system for disassembling components of a drill string includes a primary wrench, a secondary wrench, and a bit removal basket. The primary wrench has a pair of jaws in which at least one of the jaws is moveable in relation to the other. The secondary wrench is disposed at a position lower than the primary wrench and is configured to define a pair of beveled faces that are adapted to restrict a rotational movement of at least one component of the drill string. The bit removal basket is disposed at a position lower than the secondary wrench. The bit removal basket is configured to define an opening therethrough. A shape of the opening is configured to correspond with profiles of at least two types of drill bits, one of the at least two types of drill bits being present for use in the drill string.

Abstract: A bend stiffener is operable to be installed on site in a collapsed state and expanded upon installation to provide increased coverage of a tubing string to be reinforced by the bend stiffener. The bend stiffener is expandable upon the tripping of tubing through the bend stiffener. The bend stiffener includes a flexible sleeve having an outer flange at an upper end and sized to receive the tubing. The bend stiffener also includes an intermediary sleeve and an external sleeve. The intermediary sleeve has a cylindrical body and an internal flange for engaging and supporting the outer flange of the flexible sleeve. Similarly, the external sleeve has an internal flange for supporting an external flange of the intermediary sleeve. When installed, the flexible sleeve slides from the intermediary sleeve and the intermediary sleeve slides from the external sleeve so that each sleeve encloses and reinforces a segment of tubing.

Abstract: A coiled tubing transport unit includes an injector head affixed to the coiled tubing transport unit at one or more movable mount points, and at least one actuator mounted between the coiled tubing transport unit and the injector head, wherein the actuator is configured to move the one or more movable mount points and the injector head in a longitudinal direction along a length of the transport unit.

Abstract: Disclosed are systems and methods for predicting a stabilized pressure in a wellbore of a well after an undesired influx of formation fluids, i.e., a kick, into the wellbore in a real-time drilling operation. Following the kick, the well is shut in. Signals representing pressure data associated with the subterranean casing, drill pipe, wellhead, and/or the bottomhole assembly and associated time data are received in a processor. A regression analysis is performed using the pressure data and associated time data in the processor and solved for a predicted stabilized pressure associated with the subterranean casing, the drill pipe, the wellhead, and/or the bottomhole assembly respectively. The regression analysis is performed around a variant of the radial diffusivity equation describing the rate-pressure relationship for flow of a production fluid. The predicted stabilized pressure is communicated to a user.

Abstract: A downhole tool held in a wellbore with a unidirectional slip and a bidirectional slip. The bi-directional slip has a slip frame and at least two slip banks. The slip frame comprises a center ring and a plurality of slats extending longitudinally uphole and downhole from the center ring and spaced radially about the center ring so as to define at least two pairs of slots. Each pair of slots has a first slot extending longitudinally uphole from the center ring and a second slot extending longitudinally downhole from the center ring. The slip banks have a first gripping bank, a second gripping bank and a groove between the first gripping bank and second gripping bank. The first gripping bank and second gripping bank each have an outer surface configured to grip the casing.

Abstract: A downhole sensing device deployment control apparatus (10) includes means to control speed of the sensing device progressing within a borehole associated with a drilling operation. A mechanical, electrically powered and/or hydro-dynamic drag/damping means/device (12) can be provided as part of the control apparatus to control speed of deployment down the borehole. The drag device (12) can have a plurality of wheels or rollers to contact an internal bore of an inner pipe of a drill string. Rotation control means (24), (26) can be provided to control an amount of rotation and/or direction of rotation of the wheels or rollers relative to travel of the sensing device within the borehole. Valving (60) can be provided. A two stage (dual) flow/pressure control valve (100) can be provided. A sensing device (release 216) and downhole position latch (202) can be provided. The sensing device can be pumped into the borehole, such as by compressed air.

Abstract: A wellbore isolation device capable of being set from the top including one or more components capable of degrading when exposed to a wellbore environment. A method and system for providing zonal isolation in a wellbore that includes a downhole degradable top-setting wellbore isolation device.

Abstract: A one trip bottom hole assembly allows setting and testing a plug and release from the plug. Cement can be pumped onto the plug, after the BHA is raised, to an extent to meet local regulatory requirements. The cutter spear combination can be activated with pressure built on a second dropped ball larger than the first ball to release the blades for extension with fluid circulation. The circulation path through the spear is opened using pipe manipulation during the spear setting sequence. The cuttings from severing the tubular fall onto the cement. The spear is set with string manipulation as the drill string rotates the blades while maintaining the string under tension. The spear can be released and repositioned for the top of the string to facilitate removal and disassembly at the surface. All the above described operations are accomplished with a single trip into the hole.

Abstract: A sacrificial breakaway mechanism comprising: a first piece attached to a fixed structure; a second piece; a plurality of connectors running between the second piece and the fixed structure; and a sacrificial element connecting the first piece to the second piece, wherein the sacrificial element is configured such that a tensile load exceeding a predetermined threshold exerted on the second piece causes the sacrificial element to break, separating the first piece from the second piece and allowing relative movement therebetween, the relative movement causing a sequential disconnection of the plurality of connectors.

Abstract: Tubing encapsulated cable is generally difficult to place in the interior of a well. Currently the tubing encapsulated cable must pass through the various valves used isolate the well as it passes into the interior of the wellbore. In a current embodiment of the tubing encapsulated cable is secured, usually by compression fitting, to the lower end of the tubing hanger where the tubing hanger is situated beneath the lowest valve used to isolate the well. The conductors within the tubing encapsulated cable are routed into the tubing hanger to a position where a penetrator passes laterally through the side of the tubing hanger. The penetrator is configured such that there are insulated and conducting portions of the penetrator tip that correspond to the insulated and conducting portions of the conductors within the tubing encapsulated cable.

Abstract: This art creates an Advanced Annular Closing Device (AACD) that corrects significant environmental operational failure modes of the existing/in-use annular closing devices. The art further develops a Mini-AACD that significantly reduces the size of the annular closing mechanism providing improved operational reliability and lower cost. The Mini-AACD is incorporated in a unique Transitory Blowout Controller (TBC) assembly installed within the drilling return/riser pipe providing enhanced and redundant blowout annular closing protection (to the existing BOP). As options the art further incorporates additional supporting devices to the AACD, Mini-AACD and/or Seabed Drilling Equipment using simplistic and reliable alternative technology that provides redundancy to the overall existing/in-use BOP providing significantly more reliable means to close a well.

Abstract: A system, in certain embodiments, includes a horizontal fracturing tree. The horizontal fracturing tree includes a first hydraulic fracturing bore configured to flow a first fluid, wherein the first hydraulic fracturing bore extends along a first horizontal axis, and the first horizontal axis is generally perpendicular to a vertical axis of a wellhead.

Abstract: Methods of plugging a hydrocarbon well by a through-tubing technique wherein the tubing is left in place, and only very short (<5 m) sections are cut, milled, perforated, ruptured and expanded, or combinations thereof. A blocking device is sent downhole if needed to block a bottom of the plug section, and resin dropped onto the blocking device to make a first plug, then cement is deployed onto said first plug to form a second plug. Therefore, the final interval is plugged with a two material binary plug. Once completed, and both primary and secondary barriers are in place, the well can be closed and the Christmas tree removed. A rock-to-rock plug can be set by removing or partially removing the tubular and the outer casing, or just inner casing/tubulars can be removed if the exterior cement and casing are of sufficient quality.

Abstract: Low profile diverters for, and the use of such diverters in, fracing operations to stimulate production of oil and gas are capable of seating against and temporarily sealing perforations, even when frac fluid is being pumped at high rates and pressures, or in horizontal or highly deviated well bores, where conventional ball sealers cannot be reliably used because of high flow rates and pressures.

Abstract: Methods for cleaning wellbore perforation clusters and reservoir fractures include extending a conduit into a wellbore until the conduit reaches a measured depth deeper than a designated perforation cluster, moving the conduit back and forth between the measured depth and a shallower measured depth, and dispensing different fluids into the wellbore via the conduit during respectively different cycles of the back and forth motion. The fluids may be liquid and/or gas. The conduit is dimensionally configured and arranged within the wellbore such that a passageway exists in the wellbore exterior to the conduit. The methods include closing the passageway prior to, at the same time or subsequent to introducing a gas-containing fluid into the wellbore and continuing to dispense the gas-containing fluid into the wellbore after closing the passageway. Storage mediums having program instructions which are executable by a processor for performing any steps of the methods are also provided.

Abstract: There is provided a system for analyzing and controlling a productivity of a drilling apparatus. The exemplary system includes a processor and a memory including instructions that cause the processor to perform certain operations. The operations can include receiving information from a control system of the drilling apparatus and determining a key performance metric based on the information. The operations can further include performing a comparison between the key performance metric and at least one other key performance metric. Furthermore, the operations can further include instructing, based on the comparison, the control system to alter the productivity of the drilling apparatus.

Abstract: A method for shale fracturing includes determining dynamic-elastic properties of a shale deposit in a geological formation. A training database is generated by three-dimensional fracture modeling. A neural network is generated in response to output results of the training database. The shale fracturing may then be performed based on the neural network.

Abstract: An illustrative domain-adaptive hydraulic fracturing simulator includes: a data acquisition module, a simulator module, and a visualization module. The data acquisition module acquires measurements of a subterranean formation undergoing a hydraulic fracturing operation. The simulator module provides a series of states for a model of the subterranean formation by: (a) constructing said model from the measurements, the model representing said current state throughout a modeled domain; (b) determining a core domain of influence within the modeled domain by identifying active fractures; (c) generating a linear set of equations to derive the subsequent state from the current state, the linear set of equations including fluid flow equations for the core domain of influence and excluding fluid flow equations for a region of the modeled domain outside the core domain of influence; and (d) deriving the subsequent state from the linear set of equations. The visualization module displays the series of states.

Abstract: A system usable in a wellbore can include a processing device and a memory device in which instructions executable by the processing device are stored for causing the processing device to: generate multiple predicted values of a first parameter associated with a well environment or a wellbore operation; determine a first trend indicated by the multiple predicted values; receive, from a sensor, multiple measured values of a second parameter associated with the well environment or the wellbore operation; determine a second trend indicated by the multiple measured values; determine a difference between the first trend and the second trend or a rate of change of the difference; and in response to the difference exceeding a threshold or the rate of change exceeding another threshold, determine a source of the difference including at least one of an erroneous user input, an equipment failure, a wellbore event, or a model error.

Abstract: A fluid delivery vessel for containing and introducing a fluid into a wellbore includes a hull including a deck and a fluid storage area, and a fluid delivery system including a conduit having a first end fluidically connected to the fluid storage area and a second end. The conduit selectively delivers a fluid from the fluid storage area into the wellbore. A remotely operated vehicle (ROV) system support platform is mounted to the deck, and a ROV deployment system supported by the ROV system support platform. The ROV deployment system is operable to selectively deploy and retrieve an ROV.

Abstract: An apparatus and method for connecting a shaped charge retainer to a shaped charge and connecting that to a charged tube in a perforating gun for use downhole.

Abstract: In one aspect, the method comprises providing a perforating gun assembly having a first group of shaped charges on first longitudinal portion of the assembly and a second group of shaped charges on a second longitudinal portion of the assembly. The orientations of the first and second groups are rotationally offset from one another around a longitudinal axis of the perforating gun assembly. The method comprises locating the perforating gun assembly in a wellbore with the first group of shaped charges adjacent a wall of the wellbore at a perforation location, and detonating the shaped charges to form a first perforation channel in the wellbore with a defined first fracture initiation point. The perforating gun assembly is translated in the wellbore to locate the second group of shaped charges orientedtowards a defined second fracture initiation point, at a desired axial position with respect tothe first fracture initiation point.

Abstract: A system for producing hydrocarbons from a subterranean well includes an electrical submersible pump assembly with a motor, a seal section, and a pump. A packer assembly with a mechanical valve is retrievable with the electrical submersible pump assembly and is a primary high pressure mechanical barrier. A shroud fully encapsulates the electrical submersible pump assembly. An annular seal assembly seals around an outer diameter of the shroud, the shroud and the annular seal assembly together being a secondary high pressure mechanical barrier.

Abstract: A motor protector includes a housing and a rotatable shaft disposed within the housing and a plurality of radial bearings coupled to the rotatable shaft, for supporting the rotatable shaft against the housing. The motor protector further includes a thrust bearing coupled to the rotatable shaft, for supporting the rotatable shaft against the housing. The motor protector also includes a shaft seal coupled to the rotatable shaft, and configured to seal a first portion from a second portion of the housing. The motor protector also includes an isolation chamber, coupled substantially lateral to the housing and configured to separate a first fluid and a second fluid via the housing.

Abstract: A method and system in which foams are used (instead of, or in addition to, NCG) to maintain pressure in a mature chamber during blowdown operations of a SAGD process or other enhanced oil recovery process. The foam occupies the depleted void space within the mature chamber after injection ceases, maintaining pressure, and improving blowdown performance. This use of the foam in the method and system also improves the performance of less mature chambers that are being operated at higher pressure adjacent to the mature chamber in blowdown. Foaming agents, such as metal carbonates, bicarbonates, and hydroxides, surfactants or any other colloidal foams, aerosols, hydrosols, emulsions or dispersions can be utilized. The method and system can be utilized in conjunction with other known art, such as heat scavenging in the chamber, or enhanced oil recovery utilizing foams, to displace oil in the chamber.

Abstract: The present invention relates to a well configuration for co-injection processes, wherein a horizontal producer well at the bottom of the pay is combined with injection or injection and producer wells that are vertical and above the lower horizontal production well. This novel well arraignment minimizes “blanket” effects by non-condensable gases.

Abstract: A control system for a percussive drilling apparatus, the control system including a control unit for controlling machine control level operations of the percussive drilling apparatus, one or more machine control nodes connected to the control unit via a control bus, the machine control nodes providing at least one output from one or more sensors of the percussive drilling apparatus, and a measurement-while-drilling analysis functionality arranged to operate at the machine control level. The measurement-while-drilling analysis functionality being arranged to obtain measurement data of the one or more sensors from the one or more machine control nodes via the control bus and to carry out a measurement-while-drilling analysis of a drilling process.

Abstract: In one or more embodiments, a system comprises a first (target) wellbore disposed in a formation, the first wellbore having a pressure imbalance therein causing an influx of formation fluids, a second (relief) wellbore disposed in the formation, a drill string disposed in the second wellbore, the drill string comprising a drill bit and a logging tool, and a wellbore ranging module comprising a processor and memory, the wellbore ranging module coupled to the drill string. The logging tool is configured to detect acoustic energy originating from the influx in the first wellbore and generate one or more signals associated with the detected acoustic energy. The wellbore ranging module is configured to receive, from the logging tool, the one or more signals associated with the detected acoustic energy and determine, using the received signals, a direction from the drill bit to the influx of the first wellbore.

Abstract: An electrically passive device and method for in-situ acoustic emission, and/or releasing, sampling and/or measuring of a fluid or various material(s) is provided. The device may provide a robust timing mechanism to release, sample and/or perform measurements on a predefined schedule, and, in various embodiments, emits an acoustic signal sequence(s) that may be used for triangulation of the device position within, for example, a hydrocarbon reservoir or a living body.

Abstract: A method for determining the permeability of a fractured zone in the subsoil, wherein at least one well is being drilled and at least said fractured zone is encountered, includes: detecting at least one value of a characteristic quantity associated with said well; retrieving from a memory a mathematical model descriptive of said characteristic quantity and dependent on at least the permeability of said fractured zone; activating a processor for: obtaining at least one calculated value of said characteristic quantity by means of said mathematical model; comparing said calculated value with said detected value; calculating a permeability value of said fractured zone as a function of said comparison; generating an output signal representative of said permeability value. Also described is an apparatus for determining the permeability of a fractured zone in the subsoil.

Abstract: One or more remote-operated sleeve valves are placed along a tubular string downhole. The sleeves can be opened and closed wirelessly, and in embodiments over and over again. Differential pressure between wellbore fluid pressure and an accumulator chamber enable repeated shifting. Each sleeve can have a unique actuation code removing constraints regarding sequence of operation and need for well intervention to access the sleeves. Hydraulic fracturing can be achieved without wellbore obstructions, and other operations benefit for reduced expense in service rigs and the ability or selectively shut off problem zones. Remote signals received downhole include those generated by percussive and seismic, distinguishable from background noise including during pumping.

Abstract: A control system for generating and utilizing at least one or more addressed datagrams that communicate information to and from devices along piping assemblies comprising; one or more transmitters, one or more receivers, and one or more controllers, wherein the transmitters transmit information via one or more addressed datagrams encoded within a working medium to one or more receivers among the piping assemblies, is described. Transmitters convert datagrams into signals that are transmitted within the working medium and the receivers receive signals from the transmitters and also convert signals from the working medium which is converted back into datagrams. The controllers receive and decode the datagrams so that the controllers selectively communicate and perform logical operations on piping assembly devices according to directions received from the addressed datagrams.

Abstract: A downhole system provides a data interface to a first downhole tool such as a steerable rotary tool. The data interface uses a close proximity data connections such as a connection between inductive loops or coils or a direct wired or optical connection. The interface provides data to a second downhole tool in a drill string section adjacent to the first downhole tool. In some embodiments data is passed to a third downhole tool that includes a telemetry transmitter. The third downhole tool may comprise a MWD (measurement while drilling) tool.

Abstract: Apparatus and methods for performing downhole testing. Example apparatus include a downhole tool string for conveying within a wellbore, the downhole tool string comprising an anchor device, a testing device, and a linear or rotary actuator. The anchor device maintains a portion of the downhole tool string in a predetermined position within the wellbore. The testing device is operable to receive a downhole sample from or test a subterranean formation surrounding the wellbore. The linear actuator is connected between the anchor device and testing device, and moves the testing device relative to the anchor device.

Abstract: An apparatus, method and computer program product is provided for determining positional conditions of a satellite positioned mobile mine work machine at a work site. The apparatus determines satellite coverage condition data on a basis of received data of satellite signal availability. Further the apparatus modifies work tasks of the mobile mine work machines of the basis of the determined satellite coverage condition data.