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WO/2021/232884A1 |
A full-frequency-sweeping electromagnetic wax-preventing scale-inhibiting corrosion-inhibiting apparatus for a crude oil exploitation and transportation pipeline, comprising a non-magnetic-conductive pressure-bearing medium transportatio...
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WO/2021/222596A1 |
A method of performing a completion operation at a wellbore includes flowing a plug downhole within fluid through a pipe disposed within the wellbore, landing the plug on a platform carried on the pipe to close the pipe to fluid flow, fl...
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WO/2021/209795A1 |
The invention relates to a synergic scale inhibitor composition advantageously used for preventing scale formation and/or scale deposition in aqueous systems comprising dissolved iron ions, particularly in geothermal field, IWT (Industri...
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WO/2021/199000A1 |
A dewaxer flow enhancer. The dewaxer flow enhancer provides heat to the crude oil within tubing of a well bore in a drilling operation and collects the wax in a swab cup. The dewaxer flow enhancer includes a body having a head and a dewa...
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WO/2021/201887A1 |
A method for reviving a well may include deploying a tube between a casing and a wellbore tubular of the well. The tube may extend from a surface through a port at a wellhead of the well to a section of the well at a depth above a packer...
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WO/2021/198751A1 |
The present disclosed embodiments include apparatuses, systems, and methods for alleviating stuck drill pipe and stuck drill string incidents during drilling operations. A rotary dynamic system (40) includes: a drill pipe (28); a bearing...
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WO/2021/188508A1 |
A method for disposing a completion assembly within a wellbore in a single trip. The completion assembly includes a mechanical formation isolation valve in an open position, a production sealing element, and a production sealing element ...
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WO/2021/181146A1 |
A system including a moveable platform (100) having an uphole end and a downhole end. The platform (100) includes a drive arrangement (110) for moving the platform in one or more directions along an interior wall (11) of a casing string ...
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WO/2021/182968A1 |
A fluid diverter tool (16), system and method of diverting a fluid flow in a in a well (2), comprising: - a tubular mandrel (48) and a packer element (30) affixed onto an exterior thereof and operable to sealingly engage an inside of a p...
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WO/2021/181144A1 |
An example laser system includes one or more optical transmission media that are part of an optical path originating at a laser generator configured to generate an input laser beam. The example laser system includes an analyzer for recei...
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WO/2021/178995A1 |
Methods and compositions for inhibiting iron sulfide scale in an oil production system having a well in a hydrocarbon-bearing formation. The methods include the steps of: supplying an aqueous scale-inhibiting solution comprising a water-...
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WO/2021/170299A1 |
A downhole cleaning tool (40) adapted for location in bore-lining tubing (22). The tool (40) comprises a tubular body (42) defining an internal bore (48), at least one radially extending cleaning blade (92), and an external axially exten...
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WO/2021/173159A1 |
A control system for and oil and gas production well includes a controller connected to a well string extending downhole from a wellhead. The control system maximizes downhole pump efficiency and oil and gas production by interactively m...
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WO/2021/170765A1 |
A method for modelling a drillstring in a wellbore, the method comprising providing a model of the drillstring, the model representing the drillstring by a sequence of alternating springs and elements, where each element describes the ma...
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WO/2021/168524A1 |
The present invention relates to a laser jetter pipe for heating scale removal treatment to be lowered by electric cable, and to a recirculation system, with the aim of heating the scale removal solution inside the production string duri...
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WO/2021/151183A1 |
The present invention relates to a method for cleaning samples of rocks from petroleum systems based on the use of a nanofluid that is able to considerably accelerate the process. The method developed combines the solubilization potentia...
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WO/2021/148848A1 |
System and methods for heating boreholes include laser generators to trigger a chemical reaction to break down heavy hydrocarbons in boreholes. The systems and methods use arrays of laser generators at the borehole surface or within the ...
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WO/2021/141973A1 |
A method of drawing a fluid into a wellbore from a formation, comprising separating the wellbore into a first section and a second section via an annulus closure device, the annulus closure device having a passage therethrough; and circu...
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WO/2021/137876A1 |
Methods and systems for removing a gel from wellbore equipment. An example method includes introducing a cleaning fluid into the wellbore equipment comprising the gel disposed therein or thereon. The cleaning fluid includes a brine havin...
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WO/2021/137869A1 |
A composition for servicing a borehole in a subterranean formation by removing a filter cake along a wall of the borehole includes a biopolymer, the composition including a carrier fluid effective to act as a transport medium; an enzymat...
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WO/2021/137934A1 |
A method of wax treatment in subsea well may comprise providing a treatment fluid comprising a base fluid and a hyperbranched polymeric additive. The method may further comprise introducing the treatment fluid into the subsea well throug...
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WO/2021/127766A1 |
The present invention relates to a system for removing hydrates and other encrustations in undersea lines in oilfields. More specifically, the present invention relates to a system for eliminating and removing hydrates and other encrusta...
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WO/2021/126306A1 |
A method is provided for non-intrusively determining deposits of a fluidic channel. The method includes creating a pressure pulse in a fluidic channel. The method also includes sensing, by one or more sensors, reflections of the pressure...
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WO/2021/126869A1 |
A screen box includes one or more support members. Each support member is configured to support a screen. Each screen is configured to filter a used drilling fluid. The screen box also includes a sensor configured to determine a number o...
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WO/2021/126946A1 |
A technique facilitates controlled creation of pressure waves in a downhole environment. The technique enables creation of, for example, dynamic underbalance (DUB) pressure waves or dynamic overbalance (DOB) pressure waves which can be u...
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WO/2021/118769A1 |
A polymeric anti-agglomerant hydrate inhibitor useful for preventing the formation of hydrate agglomerates in a multi-phase oilfield fluid may be synthesized via a condensation reaction between a cyclic anhydride and a tertiary amine-dio...
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WO/2021/119113A1 |
A first expandable tubular (204) is longitudinally extendable from a housing (202). The first expandable tubular is expandable to a diameter equal to an internal surface of a wellbore. A first expander (206) is configured to expand the e...
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WO/2021/116304A1 |
A tool (1) for cementing an annulus in a subsea oil or gas well, and methods for using the tool are provided. The tool includes a safety module (2) providing fluid communication between an umbilical and a perforation and circulation modu...
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WO/2021/112850A1 |
Methods for reducing zinc in fluids for use in subterranean formations are provided. In one or more embodiments, the methods include providing a fluid comprising an aqueous base fluid and zinc; and adding a precipitant comprising polyvin...
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WO/2021/108880A1 |
The present invention relates to a method for clearing undersea lines, in which the method resolves the most complex obstructions of flexible undersea lines where a conventional approach is not effective. Furthermore, the present inventi...
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WO/2021/113222A1 |
A system and method for cleaning a wellbore. The system includes a production device and a cleaning assembly coupled to a bottom end of the production device. The production device and cleaning assembly are conveyed to a target location ...
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WO/2021/108180A1 |
A vectored annular cleaning system (VACS) includes a tool body having a first end, a second end, an outer surface and an inner surface defining an internal bore. A valve system is arranged in the internal bore. The valve system includes ...
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WO/2021/102538A1 |
The present invention relates to a centrifugal pump for heating fluid by impressed current that comprises a volute (29) and a cover (34), in which the following are provided inside the volute (29): an impeller (33) positioned between two...
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WO/2021/086752A1 |
A composite for controlling the release of a well treatment agent or for inhibiting or preventing the formation of contaminants into a fluid or a surface within a reservoir contains a well treatment agent immobilized on a surface of the ...
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WO/2021/080622A1 |
In artificial lift production systems, a reduction in pressure and temperature as production fluids migrate to the surface can cause a buildup in the production tubing that reduces or stops production. To remove buildup, an ESP can be op...
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WO/2021/072494A1 |
A clearing head 10 includes annular scraper edge (12) and rows of openings (14, 16). A clearing tool (100) has a one-piece combined shaft (24) and clearing head (10). Wiper ring (49) includes inner first material 49a around an opening (4...
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WO/2021/076158A1 |
The present disclosure provides methods, compositions, and systems directed to filter cake removal embodying a delayed breaker fluid for oil-based drill-in fluids. A wellbore treatment method comprising: introducing a delayed breaker flu...
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WO/2021/076157A1 |
The present disclosure provides methods, compositions, and systems directed to filter cake removal embodying a delayed breaker fluid for oil-based drill-in fluids. A wellbore treatment method comprising: introducing a delayed breaker flu...
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WO/2021/072569A1 |
A method for dealing with the locking in a hole of a traction pipe of a non-flat excavation horizontal directional drill and a sleeve device. The sleeve device comprises a drill rod connecting device (3), a device (1) separating attachme...
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WO/2021/071480A1 |
Multifunctional surfactants useful in, for example, in the oil and gas industry, are provided, in some embodiments, the.multifunctional surfactants include at least one amide group and at least one thiol group in the same molecule.ยท in ...
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WO/2021/067371A1 |
A method of determining a risk of corrosion and scale formation of tubing (102) in a wellbore includes receiving, from a plurality of first sensors (104) positioned at a downhole location of a wellbore, first production stream informatio...
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WO/2021/062514A1 |
The present invention discloses a method and a composition for removing metal sulfide scale present on the surface of a metal. The liquid composition comprises an aqueous solution of a chelating agent and a counter ion component, an alde...
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WO/2021/061903A1 |
A grafted poly(a-olefin-maleic anhydride) copolymer for use as a wax inhibitor in crude oils having the following general chemical formulae of Structure (I), where R1 is a substituent having, for example, from 1 carbon atom to 10 carbon ...
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WO/2021/050121A1 |
Compositions and methods of using of such compositions to, for example, inhibit shale are provided. In one embodiment, the methods include introducing an additive including a cationic clay stabilizer and an anionic clay stabilizer into a...
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WO/2021/045745A1 |
A method may include: generating a signal in a conduit; measuring the signal; generating data representing a deposit in the conduit, the data being generated by a deposition identification model, wherein the deposition identification mod...
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WO/2021/030683A1 |
In a snubbing operation, a method is used for determining when a wellbore should be circulated by comparing calculated torque and drag values from a clean wellbore against actual torque and drag values. In a more expansive application, f...
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WO/2021/011570A1 |
A system and method for targeted delivery of treatment material to a specified depth in a wellbore, including placing a container to the specified depth and allowing the container to fail at the depth due to wellbore pressure to release ...
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WO/2021/007441A1 |
Macroparticulates may be formed through at least partial self-assembly by reacting an epoxide-containing (meth)acrylic polymer or copolymer with a compound bearing a nitrogen nucleophile. An internal cavity may be formed when functionali...
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WO/2021/003552A1 |
The present invention discloses a novel aqueous composition for use in removing mixed sulfate scale from a surface contaminated with such, said composition comprising: a chelating agent and a counterion component selected from the group ...
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WO/2021/003476A1 |
A method and system for removing wax deposits from a wellbore and other oil production and processing equipment using a wax removal surfactant having at least 1% alkyl poly glycoside (APG), at least 0.5% ethoxy lated alcohol (AE) or alco...
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