Abstract: Green demulsifiers useful for demulsifying emulsions of water and crude oil are made by reacting together an alcohol, a multifunctional acid and/or anhydride, and a fatty acid, and optionally a polyol that is polyethylene glycol and/or polypropylene glycol. The green demulsifier has ester bonds between the reactant moieties. These ester bonds can hydrolyze which results in relatively high biodegradation.

Abstract: An ultrasonic probe and methods of manufacture are provided. The method can include depositing a base layer on a platform. The method can also include depositing a first portion of a first functional layer on the base layer. The method can further include positioning a first surface of an ultrasonic transducer on the first portion of the first functional layer. The transducer can further include a second surface opposite the first surface and opposed first and second sides. The first and second sides can be transverse to the first and second surfaces. The method can additionally include depositing a second portion of the first functional layer on the first and second sides of the transducer. The method can further include depositing a second functional layer upon the second surface of the transducer. The transducer can be encapsulated by the first functional layer and the second functional layer.

Abstract: An aqueous fluid is gelled in a productive zone of a subterranean formation to create a temporary fluid-impermeable barrier. The fluid contains nanoparticles, a polyacrylamide having a weight average molecular weight from about 1.5 million to 22 million Dalton and an encapsulated liquid crosslinking agent. Upon release of the liquid crosslinking agent, the barrier is formed by crosslinking the polyacrylamide. The nanoparticles remain dispersed in the crosslinked gel. The fluid-impermeable barrier is effective over a period of at least 1 hour up to 2 weeks while the downhole temperature in the well is at least 300° C.

Abstract: A composition of matter comprises a liquid and functionalized nanoparticles suspended in the liquid. At least some of the functionalized nanoparticles comprise nanoparticles of aluminosilica and have a chemical structure of: wherein at least one of the X's represents —O— bonded to a silicon (Si) atom or an aluminum (Al) atom of the aluminosilica of at least one of the nanoparticles; each other of the X's represents an additional —O— bonded to another silicon (Si) atom or another aluminum (Al) atom of the aluminosilica of at least one of the nanoparticles, an alkoxy group, an alkyl group, a hydroxyl group (OH), a hydrogen atom, or a halide; Z represents an oxygen (O) atom or an NH group; and Q represents an epoxide group, an aziridine group, a —CH(OH)CH2OH group, a —CH(OH)CH2NH2 group, a —CH(NH)2CH2OH group, or a —CH(NH2)CH2NH2 group. Methods of formation and of use are also disclosed.

Abstract: A wellhead assembly (100) comprises a wellhead apparatus (10) having a tubular body (16) defining an axial throughbore (18), a tubing hanger (12) for supporting downhole tubing (14) and associated downhole tools and equipment within the wellhead assembly (10), and more particularly orientating the tubing hanger (12) relative to a conductor (36). The wellhead apparatus (10) comprises a tubing hanger alignment arrangement (32) which in the illustrated apparatus (10) takes the form of a helical profile provided in an axial throughbore (18) of the tubular body (16). The tubing hanger alignment arrangement (32) is configured to engage an alignment arrangement (34) of the tubing hanger (12) so as to orient the tubing hanger (12) relative to the wellhead apparatus (10) as the tubing hanger (12) is run into the tubular body (16).

Abstract: A method of analyzing a structural condition of a machine is described. The method includes determining a position of a portion of a machine, a rotating shaft, a fluid transfer system, or a reciprocating machine in operation; collecting an image of the portion with an image collector; synchronizing the determined position of the portion with the collected image of the portion; amplifying the synchronized image; and storing the amplified image to a memory. Related apparatuses, systems, storage media, techniques and articles are also described.

Abstract: Non-aqueous drilling fluids may be removed from a wellbore or tubing nor casing within the wellbore by introducing into the well a biodegradable aqueous fluid comprising banana.

Abstract: A pumping system deployed in a wellbore has a motor, a pump driven by the motor, and a volumetric compensator connected to the motor to accommodate the expansion and contraction of fluids contained within the motor. The volumetric compensator has a head connected to the motor, a base that includes a fluid exchange port that extends to the wellbore, and a housing extending between the head and the base. The volumetric compensator further includes an inverted bellows assembly contained within the housing. The inverted bellows assembly includes a metal bellows that has an interior, an exterior, a proximal end and a distal end. The interior of the metal bellows is in fluid communication with the wellbore. The inverted bellows assembly may also include one or more guide rings connected to the exterior of the metal bellows. The guide rings are lubricated by the clean motor fluid surrounding the exterior of the metal bellows.

Abstract: A seal section for use in a downhole submersible pumping system includes a bag support tube, first and second bag support plates connected at opposite ends of the bag support tube, and a seal bag extending between the first and second bag support plates. The seal section further includes one or more seal bag shields inside the seal bag. The seal bag shields are configured to prevent the seal bag from becoming damaged through contact between the seal bag and the bag support tube or the first and second bag support plates.

Abstract: An embodiment of a PCD insert comprises an embodiment of a PCD element joined to a cemented carbide substrate at an interface. The PCD element has internal diamond surfaces defining interstices between them. The PCD element comprises a masked or passivated region and an unmasked or unpassivated region, the unmasked or unpassivated region defining a boundary with the substrate, the boundary being the interface. At least some of the internal diamond surfaces of the masked or passivated region contact a mask or passivation medium, and some or all of the interstices of the masked or passivated region and of the unmasked or unpassivated region are at least partially filled with an infiltrant material.

Abstract: A scale inhibitor squeeze treatment is enhanced by injecting a pre-flush solution into a wellbore, where the pre-flush solution includes at least one organic carbonate solvent, such as a dialkyl carbonate and/or a cyclic carbonate. The use of an organic carbonate solvent can help prevent the pre-flush solution emulsion formation, help avoid water-blocking, and enhance scale inhibitor adsorption. The use of an organic carbonate solvent also permits the pre-flush solution to be free of water, in one non-limiting embodiment.

Abstract: A side pocket mandrel for use in a gas lift system is configured to improve the recovery of petroleum fluids from a well. The side pocket mandrel includes an upper assembly joint, a lower assembly joint, and a central portion that has a total length (LT). The side pocket mandrel further comprises a central bore extending through the side pocket mandrel along a central longitudinal axis that extends through the upper and lower assembly joints. The side pocket mandrel further includes a tool channel offset from the central bore and a side pocket tube linearly aligned with the tool channel and configured to receive a gas lift valve. The side pocket mandrel further includes a pair of primary flow blocks that each have a length (LFa) that is at least 35% of the total length (LT) of the central portion of the side pocket mandrel.

Abstract: In one aspect, embodiments of the present disclosure are directed to a process for manufacturing a side pocket mandrel that involves welding upper and lower swages to a central body of the side pocket mandrel. In some embodiments, the process includes the steps of providing a first side of the welded joint and a second side of the welded joint, where the first and second sides are either the central body or the swage. The process continues with the step of approximating the first and second sides such that the first and second sides are in contact. Importantly, the first and second sides are brought together without creating a root gap between the first and second sides. Next, the first and second sides are welded together to form the welded joint between the swage and the central body.

Abstract: Non-acidic sulfur compounds (e.g., thiols) can be selectively extracted from a hydrocarbon stream containing them (e.g., crude oil) by contacting the hydrocarbon stream with a carbonate solvent that contains at least one organic carbonate (e.g., propylene carbonate) in an amount effective to selectively absorb and extract the non-acidic sulfur compounds therefrom. The carbonate solvent may optionally also comprise an additional solvent (e.g., caprolactam), a soluble metal salt (e.g., a metal salt where the metal is iron), and/or a mercaptan scavenger that is a heterocyclic amine (e.g., oxazolidine).

Abstract: Methods, systems, and apparatuses for remote well operation control. Methods include conducting, with a plurality of remote well operation control hosts operating on corresponding remote well logging data acquisition management systems, a well operation using a well operation system at a well, wherein the well operation system includes a carrier having disposed thereon at least one logging instrument. Methods may include establishing a first operational control relationship between the carrier and a first of the plurality of remote well operation control hosts sufficient for the first remote well operation control host to control the carrier; and establishing a second operational control relationship between a selected one of the at least one logging instrument and a second remote well operation control host different than the first, the operational control relationship sufficient for the second remote well operation control host to control the at least one logging instrument and receive logging data.

Abstract: An instrument panel includes a frame defining an opening, a plurality of cards, and an HMI. The cards have a front face, a rear face, one or more circuits, and a data interface on the rear face in communication with the circuits. The cards include one or more first cards and one or more second cards. The first cards front face have a vertical dimension approximately equal to a vertical dimension of the opening. The second cards have a body, a nose projecting from the body defining the second cards front face, and a recess between the nose and body. The HMI includes a front face received within the opening. The first cards are positioned with the front face visible within the opening. The second cards are positioned with the nose visible within the opening and a depth of the HMI received within the recess.

Abstract: Downhole drilling characteristic measurement systems for measuring a characteristic of drilling through the earth's subsurface and methods of the same are described. The systems include a downhole tool having an active measurement system, comprising a receiver, a first transmitter, and a second transmitter and a controller in communication with the first transmitter and the second transmitter, the controller configured to control the first transmitter and the second transmitter to transmit a first transmitted signal from the first transmitter and a second transmitted signal from the second transmitter. The receiver is arranged to receive a first received signal from the first transmitted signal and a second received signal from the second transmitted signal. A processor is configured to determine a characteristic of drilling from the first received signal and the second received signal.

Abstract: A submersible pumping system for producing a fluid from a wellbore through production tubing to a wellhead includes a motor controlled by a motor drive, a pump driven by the motor, and one or more downhole sensors configured to measure conditions at the motor and pump. An intake fluid density control system has a control fluid reservoir positioned above the pump that is configured to release a density control fluid to the intake of the pump under the force of gravity. The release of the density control fluid can be controlled by a dump valve that automatically moves between open, closed, and intermediate positions in response to a control signal based on measurements made by the downhole sensors or motor drive.

Abstract: An electrical submersible pumping system (“ESP”) for use in a wellbore includes an electrical motor, a pump, a shaft coupled between the motor and pump, and a lubricant pump for circulating lubricant within the ESP. The lubricant pump includes a diffuser and an impeller that mounts onto and rotates with shaft rotation. A portion of the impeller has a frusto-conical outer surface, which is circumscribed by a portion of the diffuser profiled complementary to the frusto-conical portion of the impeller. The pump directs lubricant flow in a single direction irrespective of the rotational direction of the shaft.

Abstract: In at least one embodiment, a well inspection method and system is disclosed. The method includes transmitting an acoustic signal from a well inspection tool into a casing structure, receiving return signals from the casing structure to the well inspection tool, performing, using at least one processor associated with the well inspection tool, a Fast Fourier Transform (FFT) on a plurality of frequencies of the return signals to generate spectrogram data, determining entropy spectra from the spectrogram data, and determining casing loadings associated with the casing structure based at least in part on the entropy spectra.