Abstract: The present application discloses drilling fluid compositions, methods for making drilling fluids, and methods for drilling subterranean wells utilizing the drilling fluids. According to one embodiment, a drilling fluid composition may include an oil phase, an aqueous phase, and a rheology modifier. The rheology modifier may include a layered double hydroxide, such as Mg/Al-Myristate layered double hydroxide.

Abstract: Oil-based drilling fluid compositions comprising an oil phase comprising a base oil, an aqueous phase comprising water, at least one emulsifier, and one or more additives. The at least one emulsifier comprises an amino amide comprising the formula R—CO—NH—R?—NH2, where R is a fatty acid alkyl and R? is an alkyl group. The one or more additives are chosen from a wetting agent, a rheology modifier, a fluid-loss control additive, and a weighting additive. Methods of making the oil-based drilling fluid compositions and methods of drilling a subterranean well utilizing the oil-based drilling fluid compositions are also provided.

Abstract: A method of removing a water-based filter cake from a wellbore, the method comprising: contacting the filter cake with a mixture comprising: a non-aqueous, polar solvent; an agent selected to breakdown the filter cake; said mixture comprising <5 wt % water and preferably being essentially anhydrous. The low water content of the mixture actually slows the degradation of the filter cake which has surprisingly been found to be more effective as it allows a more even removal of the filter cake and a more efficient use of the mixture; without the tendency to create local holes in the filter cake where the mixture could escape. Embodiments of the present invention use a polar solvent with a dielectric constant of more than (15), preferably more than (30) such as (15) monoethylene glycol (MEG). In preferred embodiments the agent comprises a salt based on potassium EDTA (ethylenediaminetetraacetic acid).

Abstract: A waste processing system includes a lower tank portion coupled to a first support frame with a guiding member. The waste processing system further includes an upper tank portion coupled to a second support frame, the second support frame including a leg defining a hole for receiving the guiding member to align the first support frame with the second support frame.

Abstract: A filtering assembly includes a screen housing having two sidewalls and two end walls, defining a perimeter with a length and a width. The screen housing also includes a top face and a bottom face. A plurality of screen segments are positioned on the top face of the screen housing, such that the plurality of screen segments on the top face provide a screening surface area less than a total surface area of the top face, and a plurality of screen segments are positioned on the bottom face of the screen housing, such that the plurality of screen segments on the bottom face provide a screening surface area less than a total surface area of the bottom face. A total screening surface area of the filtering assembly is greater than the total surface area of the top face.

Abstract: Cement compositions containing a cement component and an oil-immiscible solvent and methods for using same are provided. In another aspect, methods for sealing subterranean zones are provided that include emplacing a cement composition into a wellbore containing a cement component and an oil-immiscible solvent, contacting the cement composition with a water source, and reacting the cement composition with the water source to form a hardened cement.

Abstract: A system includes a first screen having a first latch on a first end of the first screen, a second screen having a first catch on a first end of the second screen, and a screen adapter that connects the first screen and the second screen. The screen adapter includes an elongate body, a first catch formed on a first side of the elongate body that engages the first latch on the first end of the first screen, and a first latch formed on a second side of the elongate body that engages the first catch on the first end of the second screen. A method includes inserting a first screen into a vibratory separator, inserting a screen adapter into the vibratory separator, coupling the screen adapter to the first screen, inserting a second screen into the vibratory separator, and coupling the second screen to the screen adapter.

Abstract: An elongate apparatus is disclosed and comprises a material passage and one or more fluid passages. The material passage receives material therethrough. The one or more fluid passages are in fluid communication with the material passage. The material passage and the one or more fluid passages extend substantially parallel throughout the apparatus. A method comprises transferring material in a material passage and further comprises injecting a fluid into the material passage via one or more injection points located along a length of the material passage.

Abstract: System, method and/or apparatus repairs an area of damaged mesh in a sifter screen (80). Such sifter screens (80) have woven wire mesh (81) stretched, tensioned and/or secured over a supporting frame (85) having cells (82). Damage occurs to the mesh (81) over certain cells (82). A plug (10) having a mesh layer (14) inserts and/or locks into place in the damaged cell (89). The mesh layer (14) of the plug (10) is flush with the mesh (81) on the sifting screen (80). Ridges (62) and/or ledges (66) secure the plug (10) in place by engaging a lip (96) in the damaged cell (89) to snap-fit the plug (10) in place.

Abstract: An apparatus, comprising a body extending in an axial direction, a sleeve for the body, and locking means for locking the body and the sleeve. The body and the sleeve comprise complementary mating protrusions and recesses configured to positively interlock the body and the sleeve in the axial direction and configured to positively interlock the body and the sleeve rotationally by the locking means positively engaging the recesses in both the body and the sleeve. A method for fixing axially and rotationally a sleeve to a body, wherein the body extends in an axial direction, comprising the steps of: sliding in the axial direction the sleeve onto the body, positively interlocking the body and the sleeve in the axial direction by rotating the sleeve relative to the body, and positively interlocking the body and the sleeve rotationally by sliding in the axial direction locking means into the body and the sleeve, the locking means comprising extensions positively engaging recesses in both the body and the sleeve.

Abstract: The invention provides a method of manufacturing a solid phase barite containing material for use in a wellbore. The method includes the steps of providing the barite containing material having relatively small particles with a particle size distribution of at least 50 vol % particles having a diameter in the range of 1 ?m to 10 ?m and at least 90 vol % particles having a diameter in the range of 4 ?m to 20 ?m; and contacting the barite containing material with a liquid in order to form relatively large particles having a particle size distribution with at least 90 vol % of the particles having a diameter of at least 30 ?m. There is also described a method of treating a wellbore with a fluid including the barite containing material.

Abstract: A tool for cleaning a casing tubular (13??) via a narrower casing tubular (9??) or width restriction, has an elongate tool body 1 with axial throughbore 2, box 3 for a corresponding pin 4 to form a tool joint with a workstring 5. In FIG. 1, the body has a nose 6 with fluid discharge channel 7 to pass circulation fluid. An internal shoulder provides a valve seat 8 for a ball 9 passed through the workstring under gravity or during pumping of fluid. Transverse channels 10 receive fluid diverted when the ball is seated within the tool. A side surface 21 has fluid outlet ports 11, and at least one further working surface 22 has tool elements, e.g. bristle-type cleaning elements 23, or scrapers or wipers. Thus the tool body is asymmetrical offering jetting functionality on one side of the tool and mechanical cleaning on the other side.

Abstract: The present invention provides a wellbore fluid, such as a drilling, completion or workover fluid, said wellbore fluid comprising a glucomannan additive. Further provided is a method of forming a gel plug from the wellbore fluid, a method of modifying the properties of a wellbore fluid, a method of drilling a subterranean hole with such a fluid and the use of glucomannan in wellbore fluids.

Abstract: A method for measuring at least one property of an earth formation and transmitting information through the earth formation may include positioning at least one sensor downhole, circulating a wellbore fluid downhole, and transmitting a first signal from the sensor to at least one modulator.

Abstract: A riser displacement and cleaning tool assembly (10) comprises a running tool (8) attachable to a work string (11), and a fluid displacing body (1) supported upon the running tool. The fluid displacing body has a head portion (6) provided with an opening (12) to accommodate relative movement of the fluid displacing body with respect to the work string, and also has flexible wiper elements (2) providing dynamic sealing contact with adjacent surfaces of the work string and a riser (20). The fluid displacing body has a skirt (5) depending from the head portion and enclosing a chamber (7) for receiving a fluid. The fluid displacing body is adapted to sealingly engage the riser and the string and is selectively releasable from an initial configuration where the fluid displacing body is supported by the running tool to an operational configuration where the fluid displacing body is axially displaceable from the running tool by introduction of a fluid to the chamber.

Abstract: System, method and/or apparatus repairs an area of damaged mesh in a sifter screen (80). Such sifter screens (80) have woven wire mesh (81) stretched, tensioned and/or secured over a supporting frame (85) having cells (82). Damage occurs to the mesh (81) over certain cells (82). A plug (10) having a mesh layer (14) inserts and/or locks into place in the damaged cell (89). The mesh layer (14) of the plug (10) is flush with the mesh (81) on the sifting screen (80). Ridges (62) and/or ledges (66) secure the plug (10) in place by engaging a lip (96) in the damaged cell (89) to snap-fit the plug (10) in place.

Abstract: This disclosure is generally drawn to systems, devices, apparatus, and/or methods related to screening and/or filtration of fluid. Specifically, the disclosed systems, devices, apparatus, and/or methods relate to screens having frame members with angled surface(s) for drilling environments. In some examples, an apparatus may include a frame and mesh. The frame may include opposing ends, opposing sides, and a plurality of frame members coupled to and extending between the opposing ends. A portion or section of the plurality of frame members may extend through and be coupled to the mesh. The plurality of frame members have at least one surface angled downward relative to the mesh.

Abstract: A method of forming an agent for removing or separating a species from a diluent or process stream, e.g. a desulphurization agent. The method comprises mixing at least one compound of manganese and pore forming articles.