Abstract: A Polycrystalline Diamond Compact (PDC) cutter for a rotary drill bit is provided with an integrated sensor and circuitry for making measurements of a property of a fluid in the borehole and/or an operating condition of the drill bit. A method of manufacture of the PDC cutter and the rotary drill bit is discussed.

Abstract: The present invention is directed to a method and a device for building a shaped body by stereolithographic solidification of building material by photopolymerization.

Abstract: A Polycrystalline Diamond Compact (PDC) cutter for a rotary drill bit is provided with an integrated sensor and circuitry for making measurements of a property of a fluid in the borehole and/or an operating condition of the drill bit. A method of manufacture of the PDC cutter and the rotary drill bit is discussed.

Abstract: A method for producing a three-dimensional object by layer by layer solidifying of a material which is solidifiable under the action of radiation is provided. The method makes use of exposure masks. In order to form each object layer to be solidified of the object in a construction plane, there is generated at least one, preferably a single, digital exposure mask by means of which the radiation is selectively projected into the construction plane. For each exposure mask, according to the object layer to be solidified, a single 2-bit bitmap is calculated which assigns either the bit-value “transparent” or the bit-value “non-transparent” to each pixel of the exposure mask. In addition, an improved exposure mask generating apparatus and an improved device for producing a three-dimensional object are proposed.

Abstract: A dispersion includes a carbonaceous nanoparticle, a dispersant including a graft polymer having a poly(alkylene glycol) side chain, and a polar solvent. An article coated with the dispersion and a method of making the dispersion are disclosed.

Abstract: A Polycrystalline Diamond Compact (PDC) cutter for a rotary drill bit is provided with an integrated sensor and circuitry for making measurements of a property of a fluid in the borehole and/or an operating condition of the drill bit. A method of manufacture of the PDC cutter and the rotary drill bit is discussed.

Abstract: A Polycrystalline Diamond Compact (PDC) cutter for a rotary drill bit is provided with an integrated sensor and circuitry for making measurements of a property of a fluid in the borehole and/or an operating condition of the drill bit. A method of manufacture of the PDC cutter and the rotary drill bit is discussed.

Abstract: The invention relates to a method for producing a three-dimensional object by layer by layer solidifying of a material which is solidifiable under the action of radiation, making use of exposure masks, wherein in order to form each object layer to be solidified of the object in a construction plane, there is generated at least one, preferably a single, digital exposure mask by means of which the radiation is selectively projected into the construction plane, wherein for each exposure mask, according to the object layer to be solidified, a single 2-bit bitmap is calculated which assigns either the bit-value “transparent” or the bit-value “non-transparent” to each pixel of the exposure mask. In addition, an improved exposure mask generating apparatus and an improved device for producing a three-dimensional object are proposed.

Abstract: A component of a wellbore tool comprises a plurality of compartments disposed over a body of the component and a coating disposed over at least a portion of a surface of the body. Each compartment comprises a healing agent formulated to form or catalyze the formation of a barrier upon release from the compartment. A matrix material separates the plurality of compartments. Methods of forming wellbore tools include forming a body, forming a plurality of capsules, and forming a coating comprising the capsules over the body. Methods of utilizing a wellbore tool in a subterranean borehole include contacting at least a portion of a body with a fluid comprising a healing agent formulated to form a barrier. Coatings for wellbore tools include a fiber comprising a plurality of discrete cells and a matrix material contacting and at least partially surrounding the fiber. Each cell comprises a healing agent.

Abstract: A component of a wellbore tool comprises a plurality of compartments disposed over a body of the component and a coating disposed over at least a portion of a surface of the body. Each compartment comprises a healing agent formulated to form or catalyze the formation of a barrier upon release from the compartment. A matrix material separates the plurality of compartments. Methods of forming wellbore tools include forming a body, forming a plurality of capsules, and forming a coating comprising the capsules over the body. Methods of utilizing a wellbore tool in a subterranean borehole include contacting at least a portion of a body with a fluid comprising a healing agent formulated to a barrier. Coatings for wellbore tools include a fiber comprising a plurality of discrete cells and a matrix material contacting and at least partially surrounding the fiber. Each cell comprises a healing agent.

Abstract: A method for forming a coating upon a wellbore tool includes forming a pattern of features supported by a body and forming a coating over the pattern of features. Forming the pattern of features includes forming a first feature and forming a second feature spaced from the first feature by a first width at a first elevation and by a second width at a second elevation, the second width being different than the first width, and the first elevation being further from an interior region of the body than the second elevation. Also disclosed is a wellbore tool comprising a coating covering a pattern of features and a method of utilizing a wellbore tool in a subterranean formation, the method including forming a pattern of features, forming a coating over the pattern of features, and disposing the wellbore tool in a borehole.

Abstract: An apparatus for measuring strain on a downhole component includes: at least one strain sensitive device disposed proximate to a surface of a component of a drilling assembly or disposed within a material forming the component; and a processor in operable communication with the at least one strain sensitive device, the processor configured to detect changes in the at least one strain sensitive device and detect at least one of erosion, crack formation and crack propagation in the component surface. An apparatus for measuring strain on a downhole component includes: at least one strain gauge deposited on a surface of a drive shaft or disposed within a material forming the drive shaft; and a processor in operable communication with the at least one strain gauge, the processor configured to detect changes in the at least one strain gauge and detect conditions affecting operation of the drive shaft.

Abstract: A well tool is disclosed. The tool includes a first member having a surface that is configured for exposure to a well fluid, the first member comprising a metallic coating disposed on a substrate, the metallic coating having a plurality of dispersed nanoparticles disposed therein and providing the surface. The tool also includes a second member that is disposed in slidable engagement on the surface of the first member. In another exemplary embodiment, a well tool includes a first member having a surface that is configured for exposure to a well fluid, the first member comprising a metallic alloy, the metallic alloy having a plurality of dispersed nanoparticles disposed therein and providing the surface.

Abstract: The invention relates to a process or device for the production of a three-dimensional object by layer-wise solidification of a material which is solidifiable under the application of electromagnetic irradiation by means of mask illumination, wherein the mask is produced using an image forming unit having a prescribed resolution, which is formed from a constant number of image forming elements (pixels) being discrete and being arranged in a spatially mutually fixed manner. For the improvement of the resolution along the outer and inner contours of the sectional areas of the object to be generated layer-wise in the sub-pixel range, a multiple illumination per layer is performed, which consists of a series of multiple images that are mutually shifted in the sub-pixel range in the image/construction plane, wherein a separate mask/bitmap is produced for each shifted image.

Abstract: Articles of manufacture comprise a body. A porous material is plated on the body, the porous material comprising nickel having a plurality of pores disposed in a generally ordered array extending into the nickel. Methods of forming a porous material on a body comprise disposing an anode and a cathode in an electrolyte comprising nickel ions. An electrical signal is pulsed to at least one of the anode and the cathode. A porous material comprising nickel having a plurality of pores generally disposed in an ordered array extending into the nickel is deposited on the cathode.

Abstract: The invention describes device and method for producing a three-dimensional object by solidifying a solidifiable material under an action of electromagnetic radiation by means of energy input via an imaging unit comprising a predetermined number of discrete imaging elements (pixels). The energy input related to a specific cross-sectional area of the three-dimensional object is controlled by exposure by means of multiple successive raster masks (bitmaps; e.g. bitmap 1 and bitmap 2 and possibly additional ones). The imaging unit is suitably controllable such that at least two masks can be generated, including a first overall mask covering the cross-sectional area (bitmap 1; with pixel-specific area elements exposing in white light) and a partial mask (bitmap 2; in which only a fraction of the area elements are exposed pixel-specifically with white light) within the overall mask. A voxel matrix may be formed.

Abstract: A Polycrystalline Diamond Compact (PDC) cutter for a rotary drill bit is provided with an integrated sensor and circuitry for making measurements of a property of a fluid in the borehole and/or an operating condition of the drill bit. A method of manufacture of the PDC cutter and the rotary drill bit is discussed.

Abstract: In aspects, the disclosure provides a drilling motor that includes a lubricating unit that selectively supplies a lubricant to the drilling fluid before the drilling fluid passes through the drilling motor so as to lubricate the stator and/or the rotor to reduce friction between the stator and the rotor and to reduce wear of the motor.

Abstract: An apparatus for forming a wellbore in a formation may include a bit body and a sensor in the bit body. The sensor may include at least one cutting element and may be configured to generate information relating to a parameter of interest when the drill bit engages a wellbore surface.

Abstract: The present disclosure relates methods and apparatuses for testing and sampling of underground formations or reservoirs. The apparatus may include at least one extendable element configured to penetrate a formation. The at least one extendable element may include at least one drill bit with a nozzle configured to receive formation fluids. The at least one extendable element may include at least one sensor disposed on the at least one extendable element. The at least one extendable element may also include a source of stimulus for stimulating the formation. The at least one extendable element may be configured to detach and/or attach from/to a bottom hole assembly (BHA). One method may include steps for performing testing on the formation for estimating a parameter of interest of the formation. Another method may include steps for performing testing to estimate a parameter of interest of the formation fluid.