Abstract: A downhole traction system includes a driving system and a downhole wheeled tractor. The driving system is connected with the downhole wheeled tractor; the downhole wheeled tractor comprises a tractor body, a power unit and a plurality of traction units; the plurality of traction units are arranged along the extension direction of the tractor body; each of the traction units comprises a driving arm, a supporting arm, a supporting wheel, a driving assembly and a supporting assembly; the driving arm and the supporting arm are movably connected with the tractor body; and the supporting wheel is connected with the driving arm and the supporting arm. When the supporting assembly drives the supporting arm to extend along the radial direction of the tractor body under the hydraulic drive action of the hydraulic power unit, the supporting wheel can be abutted against the well wall.

Abstract: The present disclosure relates to a system including: a wellhead including: a landing base; a wellhead pipe, wherein the wellhead pipe extends from the landing base; and a surface casing, wherein the surface casing at least partially surrounds the wellhead pipe; a hydrophobic sand pack including a hydrophobic sand, the hydrophobic sand pack at least partially surrounding: the landing base, the wellhead pipe, the surface casing, or any combination thereof.

Abstract: There is provided system and methods for restimulating a hydrocarbon producing well using water and pressures below the closure pressure, which results in production rates approaching the initial production rate of the well. There is provided multiple restimulation techniques using water based fluids at or below the closure pressure of the well, which results in production rates approach that of the prior rate upon stimulation.

Abstract: A slip subsystem, including a slip having wickers angled in a first direction and wickers angled in a second direction opposite the first direction, an engager disposed adjacent the slip to selectively engage the wickers, and a biaser to bias the engager into engagement with the wickers. An anchor including a housing having a slip ramp, a drive plate, a power spring to bias the drive plate, a slip subsystem operably connected with the housing. A method for setting an anchor in a borehole, including driving a drive plate into a slip, forcing the slip to climb a housing, engaging an activation block with the slip to prevent slip movement relative to the housing in an anti-setting direction. A borehole system, including a borehole in a subsurface formation, a string in the borehole, and a slip subsystem disposed within or as a part of the string.

Abstract: A method of conducting a pressure test on a piping and manifold system can include isolating a wellhead from fluid flow into a well to form a closed test system, operating at least one and less than all of the plurality of pumping units to pump fluid into and pressurize the closed test system to a first predetermined pressure, upon reaching the first predetermined pressure, halting pumping of fluid by the at least one of the plurality of pumping units, continuing pumping of fluid into the closed test system with at least one pressure test pump to pressurize the manifold and piping to a final predetermined pressure, and upon reaching the final predetermined pressure, halting pumping of the fluid by the at least one pressure test pump.

Abstract: An improved debris catcher and choke system for receiving a pressurized fluid stream from wellbore operations where a controller can selectively place a plurality of debris catchers in debris catching or flushing modes, and the cleaned fluids from one of the debris catchers can be used to flush one of the other debris catchers. One or more embodiments relate to systems and methods for utilizing debris catchers and choke valves.

Abstract: In one embodiment, a method for preventing flaring at a facility, by a system, includes receiving a plurality of pressure measurements from a sensor disposed downstream of the facility. The method further includes comparing the plurality of pressure measurements to a threshold pressure, wherein the threshold pressure corresponds to mitigating a flaring event. In response to determining that at least one of the plurality of pressure measurements is greater than the threshold pressure, the method further includes analyzing injection response curves for a plurality of wells to determine a first well for adjusting a back pressure on a reservoir intersected by the first well. The method further includes transmitting an instruction to the first well to adjust the back pressure on the reservoir.

Abstract: A flexible downhole component includes an upper connection for connecting the flexible downhole component to a first downhole tool and a lower connection for connecting the flexible downhole component to a second downhole tool. The flexible downhole component includes a flexible body disposed between the upper connection and the lower connection. The flexible downhole component includes an upper damping component and a lower damping component each configured to damp torsional oscillations.

Abstract: An annulus flow control tool can include an inner mandrel with a longitudinal bypass flow path, a sleeve on the inner mandrel, the sleeve being displaceable on the inner mandrel between bypass open and bypass closed positions, and at least one annular seal carried externally on the sleeve. A method of controlling annulus flow can include connecting an annulus flow control tool in a tubular string, the annulus flow control tool including a bypass flow path and at least one external annular seal, deploying the tubular string into the well, sealingly engaging a well surface with the annular seal, flowing a fluid through the tubular string into the well, thereby causing another fluid in an annulus between the tubular string and the well surface to flow through the bypass flow path, and closing the bypass flow path, the annulus flow control tool thereby blocking flow through the annulus.

Abstract: Embodiments herein generally relate to a method and system for oil recovery using solvent-assisted electric heating. In at least one example, the method comprises A method for oil production using solvent-assisted electric heating, comprising conveying liquid solvent into a subsurface formation; operating at least one downhole electric heater to vaporize the solvent in-situ, the at least one downhole electric heater being operated in a temperature range that is: (i) above the vaporization temperature of the solvent; and (ii) below the steam saturation temperature of the reservoir; conveying a mixture comprising oil and solvent from the subsurface formation to a separation subsystem; and separating, using the separation subsystem, the oil from the solvent.

Abstract: A wellhead assembly with an external test port for testing a primary seal at an interface of a wellhead and a base. The assembly includes unique architecture with a secondary seal provided adjacent the primary. In this manner, testing of the primary seal from an external location may proceed without concern over a false indication of primary seal failure. That is, for circumstances where a more interior side of the seal fails under pressure testing even though an outer face of the seal might remain in sealing engagement, the secondary seal would ensure that the outer sealing engagement is detected. As a result, a practical manner of testing the wellhead seal from an external location without the need of plugging the wellbore is provided.

Abstract: The present invention discloses a ball-clamp type fall arrester for a drill pipe, which includes a base and a steel ball seat arranged in the base. The steel ball seat is provided with a liftable steel ball frame. A side wall of the steel ball frame is provided with a plurality of limit hole. An inner wall of the steel ball seat is provided with a guide ramp. The plurality of limit holes are respectively provided with a plurality of steel balls which are movable radially. When the steel ball frame is lifted or lowered, a radial position of each steel ball in a corresponding limit hole is positioned by the guide ramp.

Abstract: A wellbore chemical injection assembly includes an extension flange including two ends joined by a flange wall defining an inlet. The first end can fluidically couple to a tubing spool inlet of a wellhead installed at a wellbore surface. The second end can fluidically couple to a fluidic outlet of the wellhead. An extension member is attached to the flange wall at the inlet at a non-zero angle. An axial length of the extension member defines a through opening of increasing inner diameter from the inlet towards an end of the extension member. The end can be fluidically coupled to a chemical reservoir from which chemical is injected through the extension member and the extension flange into the tubing spool. Multiple valves are seated in the through opening of the extension member. The multiple valves are sized differently to seal the through opening of increasing diameter.

Abstract: Embodiments include a method for monitoring a fracturing operation that includes positioning a pump at a well site where fracturing operations are being conducted. The method also includes arranging one or more sensors at at least one of a pump inlet or a pump outlet, the one or more sensors monitoring a flow rate of a slurry. The method includes receiving flow data from the one or more sensors. The method also includes determining a pump efficiency, based at least in part on the flow data, is below a threshold. The method further includes adjusting one or more operating parameters of the pump.

Abstract: A downhole assembly includes: a shape-memory article; and a deployment control element adjacent the shape-memory article, the deployment control element having a body and a seal element that forms an enclosure together with the body, the deployment control element further including an activation fluid disposed in the enclosure, wherein the body, the seal element, or both of the deployment control element is degradable in the presence of the activation fluid.

Abstract: The invention relates to the drilling of wells in rock and hydrocarbon formations. Drilling is performed with a drill string having a bottom hole assembly (BHA) and drill bit. Drilling mud is circulated during drilling. A valved inlet port is provided in the BHA which, in the event of a pack-off, opens and allows drilling mud to enter an internal space in the BHA to relieve pressure. An outlet port at the proximal end of the BHA may be provided to allow the mud to flow back into the annulus around the drill string. In this way, rapid build-up of pressure is avoided and the driller has more time to respond to the pack-off.

Abstract: A system includes at least one or more wellbores penetrating a subterranean production zone, a downhole electrical submersible (ESP) assembly operable to generate electricity and configured to be installed within the at least one or more wellbores and including a pump intake, a pump operatively coupled to the pump intake, the pump including an impeller responsive to a flow of formation fluid from the pump intake, a motor generator operatively coupled to the impeller to generate electricity in response to rotation of the impeller, a configuration of surface equipment in communication with the downhole ESP assembly and including a controller at surface configured to receive electricity from the motor generator and an electrical apparatus operatively coupled to the controller to receive the electricity, wherein at least one of the one or more wellbores the pump makes operable the motor generator to generate electricity that is conveyed to the surface equipment.

Abstract: The invention relates to a method of conducting a perf wash cement (“P/W/C”) abandonment job in an offshore oil or gas well annulus (2), in particular the washing or cementing operation using a rotating head (6, 8) with nozzles (7, 9) dispensing wash fluid or cement at pressure. Certain values of parameters of a washing or cementing job have been found surprisingly to affect the quality of the job, or the degree to which they affect the quality of the job has been unexpected. These include including rotation rate of the tool, the direction of translational movement of the tool, and the volume flow rate and pressure per nozzle of cement or wash fluid (and hence nozzle size).

Abstract: A system and a method for clearing debris from the top of plug in a well are provided. In an exemplary system a plug for a well includes a cylindrical body, a sealing ring mounted in the cylindrical body, and a flapper valve disposed against the sealing ring in the cylindrical body. The plug also includes a torsion spring to open the flapper valve when a latch on the flapper valve is disengaged, a receiver to receive control signals, and an actuator controlled by the receiver to disengage the latch.

Abstract: Disclosed is an apparatus and method for collecting downhole debris wherein the apparatus comprises a tubular member extending between first and second ends connectable to a production string connectable in fluidic communication with the production string and having an open flow path therethrough between the first and second ends, at least one coiled member extending between first and second ends, said second end being operably connected to the tubular member and a top cap secured to the first end of the coiled member and adapted to sealably close a top end of the coiled member. The method comprises extending the coiled member in response to an upward flow through the tubular member so as to permit upward flow of fluids and solid particles and compressing the coiled member in response to a downward flow so as to permit fluid flow between coils of the coiled member while retaining solid particles thereover.