Abstract: Using stabilized fluids in multistage well treatment is disclosed. Also disclosed are methods, fluids, equipment and/or systems for treating a subterranean formation penetrated by a wellbore, relating to a stabilized treatment slurry.

Abstract: A multi-step electromagnetic inversion method is provided for determining formation resistivity, anisotropy and dip. An electromagnetic logging tool is used to obtain non-directional, anisotropy, and directional (including symmetrized and anti-symmetrized resistivity measurements) in a formation using an electromagnetic logging tool. Bed boundaries of the formation are first identified. A horizontal resistivity profile is obtained using the non-directional resistivity measurements, and a vertical resistivity profile is obtained using the anisotropy resistivity measurements. The vertical resistivity profile is improved using the directional resistivity measurements, while dip values are also obtained via an inversion using the directional resistivity measurements. Then, an inversion for each of vertical resistivity, horizontal resistivity, dip values, and bed boundaries is performed using all of the non-directional, anisotropy, and directional resistivity measurements to obtain a formation model.

Abstract: Downhole tool positioning systems and methods are disclosed which employ buoyancy-mediated tool displacement wherein the density of the tool or string connected to it, and the treatment fluid are matched to facilitate hydraulic translation of the tool in a deviated borehole or lateral with or without a mechanical translation device.

Abstract: A system for procuring well services for a location is disclosed. The system comprises a computer processor and memory; an input module stored in memory, executing on the computer processor, and configured to obtain a location data item comprising a geographic location; a processing engine, executing on the computer processor, and configured to: receive a plurality of well completions for the location, and compare a first well completions of the plurality of well completions to a second well completions of the plurality of well completions; and an output module stored in memory, executing on the computer processor, and configured to display the first well completion and the second well completion to a user.

Abstract: An electromagnetic method for obtaining a dip azimuth angle from downhole electromagnetic measurements includes acquiring electromagnetic measurement data in a subterranean borehole from at least one measurement array. The electromagnetic measurement data is processed by a least squares method to obtain the dip azimuth angle. Related systems and apparatuses are also disclosed herein.

Abstract: A method for identifying low resistivity low contrast high temperature high pressure productive subsurface formations rich in acid gases penetrated by a wellbore includes obtaining dielectric permittivity measurements of selected formations adjacent at least part of the wellbore. Nuclear magnetic resonance relaxometry measurements are obtained for the selected formations, the relaxometry measurements being calibrated to identify relaxation times corresponding to acid gases in high humidity at elevated pressure and temperature. Zones are identified for withdrawing formation fluid samples based on the dielectric permittivity and relaxometry measurements.

Abstract: A motor steering system includes a drill collar, a transmitter circuit having a power transmitting coil, a rotor, and a receiver circuit having a power receiving coil. The transmitter circuit is coupled to the drill collar and the receiver circuit is coupled to the rotor such that the transmitter circuit and the receiver circuit are positioned with respect to one another such that power is coupled from the power transmitting coil to the power receiving coil whereby the drill collar provides electric power to the rotor.

Abstract: A system, apparatus, and method for gravel packing a wellbore are provided. The system includes a service tool extending through a packer that isolates a proximal annulus of the wellbore from a distal annulus thereof. The service tool defines an inner bore and a conduit, with the conduit being in fluid communication with the proximal annulus and the distal annulus. The system also includes a flow restrictor disposed in the conduit. The flow restrictor is configured to induce a first pressure drop in fluid flowing through the conduit in a first direction and to induce a second pressure drop in fluid flowing through the conduit in a second direction, with the second pressure drop being greater than the first pressure drop.

Abstract: Various embodiments of methods and systems for wireless power and/or data communications transmissions to a sensor subassembly above a mud motor in a bottom hole assembly are disclosed. Power and/or data are supplied by rotary modulator and power generation system positioned above the mud motor. Wires may connect to an annular coil. Power and/or communications are transmitted through the annular coil to an inductively coupled second, mandrel coil that is attached to the rotor. By leveraging resonantly tuned circuits and impedance matching techniques for the coils, power and/or data can be transmitted efficiently from one coil to the other despite relative movement and misalignment of the two coils.

Abstract: A method for determining far field maximum stress direction of formations penetrated by a wellbore from multiaxial electromagnetic induction measurements and formation image measurements made in the wellbore includes determining whether fractures exist in a far field from the wellbore using the multiaxial electromagnetic induction measurements. The fractures are determined to be naturally occurring or induced using the formation image measurements. Orientation of the fractures when determined to be induced are determined. The far field maximum stress direction is then determined based upon the determined orientation.

Abstract: A system and methodology facilitates the handling of oilfield material. The oilfield material is stored in at least one silo which enables use of gravity to feed the oilfield material to a blender or other suitable equipment. Each modular silo is transportable and may be engaged with a support structure via a pivot connection. Once engaged, the silo is pivoted to a raised, upright position on the support structure. The oilfield material is then moved to an interior of the silo, and gravity may be used to feed the oilfield material to a blender or other equipment in a controlled manner.

Abstract: A method for pulsed neutron well logging of a subsurface formation, includes irradiating the formation with a plurality of bursts of neutrons of a group of selected durations; detecting gamma rays resulting from interaction of the neutrons during a group of selected time gates which contains at least some early and late gamma ray counts. The gamma rays are detected at at least two axially spaced apart locations from a position of the irradiating. A weighted sum of the numbers of gamma rays detected in each of the time gates is calculated. A ratio of the weighted sum of detected gamma rays at a first axial spacing to the weighted sum at a second axial spacing is determined. The ratio is used to determine a hydrogen index of the subsurface formation.

Abstract: A well-logging device may include a housing to be positioned within a borehole of a subterranean formation and at least one radiation source carried by the housing to direct radiation into the subterranean formation. The well-logging device may also include noble gas-based radiation detectors carried by the housing to detect radiation from the subterranean formation. At least one of the noble detectors is at a first axial spacing from the at least one radiation source, and at least one other of the noble gas-based radiation detectors is at a second axial spacing from the at least one radiation source different from the first axial spacing. A controller may determine at least one property of the subterranean formation based upon the detected radiation from the noble gas-based radiation detectors.

Abstract: A well-logging device may include a housing to be positioned within a borehole of a subterranean formation, and at least one radiation source carried by the housing to direct radiation into the subterranean formation. The well-logging device may also include noble gas-based radiation detectors carried by the housing in azimuthally spaced relation to detect radiation from the subterranean formation. A controller may determine at least one property of the subterranean formation based upon the detected radiation from the noble gas-based radiation detectors.

Abstract: A method for estimating fracture aperture from multi-axial electromagnetic induction measurements made in a wellbore includes determining a fracture indicator and a fracture orientation indicator. The value of the fracture indicator is determined from components of the measurements made transverse to the tool axis. A relationship between the value of the fracture indicator and the fracture aperture for the subsurface formation is determined by estimating the fracture indicator using a plurality of values of fracture aperture and a resistivity of drilling fluid in the wellbore over a background formation with estimated horizontal resistivity and vertical resistivity. The fracture aperture is determined using the determined fracture indicator and the determined relationship.

Abstract: Additive manufacturing may be used to manufacture components of downhole tools conveyed by downhole wireline, tubing, drill pipe and/or the like. A method in accordance with one or more aspects of the disclosure uses starting materials to incorporate one or more feedthroughs, passages, channels, chambers and the like in a downhole tool structure during the formation of the structure. A CAD may be made and then converted to a STL file, and then stereo lithography, selective laser sintering, fused deposition modeling, direct metal laser sintering and/or electron beam melting may be used to form the downhole tool. Subtractive manufacturing may be performed on the downhole tool after the downhole tool is formed by additive manufacturing.

Abstract: Methods are disclosed for assigning a value to a geological asset or information relating thereto in the presence of private and public sources of uncertainties. The private and public uncertainties associated with a geological asset or information associated therewith are defined, and private uncertainties are assigned a subjective probability representing the best state of knowledge currently available. A multi-dimensional valuation-time lattice is constructed using the subjective probabilities for the private uncertainties and using risk-neutral probabilities for the public uncertainties. A backward recursion through the multi-dimensional lattice is performed in order to generate a present value for the asset given the present information available. During the backward recursion, a tally of delta hedging coefficients is generated and stored in order to provide an operational “map” or “decision pathway” should the project move forward.

Abstract: Example embodiments of the present disclosure include one or more of a method, computing device, computer-readable medium, and system for using software interaction information. An example embodiment of a method may include providing a domain object using software operating on a computing device; and storing, in an interaction object provided by the software, user interaction information related to a user interaction relating to the domain object. The user interaction information may be analyzed, and feedback may be provided to a user based upon analyzing the user interaction information.

Abstract: An embodiment of a method of deploying a cable into a wellbore penetrating a subterranean formation comprises providing a cable, wherein the cable comprises at least one insulated conductor, at least one armor wire layer surrounding the insulated conductor, a polymeric material disposed in interstitial spaces formed between armor wires forming the at least one armor wire layer, and interstitial spaces formed between the at least one armor wire layer and insulated conductor, the polymeric material forming a continuously bonded layer which separates and encapsulates the armor wires forming the at least one armor wire layer, and whereby the polymeric material is extended to form a smooth polymeric jacket around the at least one armor wire layer, introducing the cable into a wellbore and performing at least one operation in the wellbore utilizing the cable.

Abstract: A laboratory NMR methodology (and corresponding laboratory apparatus) defines a sample volume. The method stores downhole tool data corresponding to a hydrocarbon-bearing sample collected from a given subsurface formation. The downhole tool data includes parameters pertaining to magnetic fields used by a downhole tool during a suite of NMR measurements of the given subsurface formation. The sample is positioned in the sample volume of the laboratory apparatus, which applies a static magnetic field in the sample volume. Furthermore, the laboratory apparatus applies a suite of NMR measurements to the sample volume to thereby determine a property of the sample. The NMR measurements of the suite each include a pulse sequence of oscillating magnetic field in conjunction with a pulsed-mode gradient field. The pulsed-mode gradient field is based on the stored downhole tool data corresponding to the sample. A laboratory NMR methodology for optimizing downhole NMR measurements is also described.