Abstract: A downhole tractor for operational use in well casing of a wellbore. The tractor comprising a tractor body, at least one actuator assembly, and at least one tractor wheel. The actuator assembly is actionable to shift the axis of rotation of the tractor wheel. The at least one tractor wheel includes at least one bifurcated tract having a leading and trailing edge for engaging the well casing. The at least one actuator assembly causes the at least one tractor wheel to switch from traversing a first vertical plane of the well casing to a second vertical plane of the well casing when actuated.

Abstract: A downhole tool for preventing pump blockage includes an outer conduit defining an outer flow path, an inner conduit located within the outer conduit defining an inner flow path and a space between the inner conduit and the outer conduit. The inner conduit includes one or more angled passageways to allow one-way debris flow. A pressure regulated valve is coupled to the upper end of the outer conduit and configured to open to expand an adjustable width angled passageway defined by the pressure regulated valve. An upper end of the inner conduit is configured to allow fluid bypass of the angled passageways of the inner conduit when the angled passageways are blocked with debris.

Abstract: An apparatus for miming production tubing string into a wellbore without rotating the production tubing string is disclosed. The apparatus is a muleshoe guide assembly utilizing a short coil spring to tilt a lower muleshoe guide into alignment with a packer bore or liner top. When the guide encounters an obstruction in the wellbore, the short coil spring will compress causing a lug to be driven into an angled milled slot causing the lower muleshoe guide to tilt inward.

Abstract: A cable head for attaching a wireline to a downhole tool includes an upper tubular member and a lower tubular member removably attached by a threaded connection. The cable head includes a pack-off assembly disposed within the upper tubular member. The pack-off assembly includes a deformable pack-off element comprising an outer sidewall for sealing against an inner sidewall of the upper tubular member, and an inner sidewall for sealing around the wireline. The pack-off assembly includes a biasing means axially in line with the deformable pack-off element. The pack-off element and the biasing means are axially compressed between an internal shoulder of the upper tubular member and the lower tubular member when the upper and lower tubular members are removably attached by the threaded connection, to enhance the seal of the tubular pack-off element with the inner sidewall of the upper tubular member, and with the wireline.

Abstract: A system for generating variable frequency tube waves includes a high pressure multiplex pump having a number of plungers, with each plunger operatively coupled to a suction valve on a suction side and a discharge valve on a discharge side. The suction valve or the discharge valve of a first one of the plungers includes an opening, such that the modified plunger on a discharge stroke pushes fluid through the opening in the suction or discharge valve. The system includes a tubular fluidly coupling the high pressure multiplex pump to a wellbore, and a pressure sensor that receives tube waves generated by the high pressure multiplex pump and reflected from the wellbore.

Abstract: A tubular for downhole use including a wall defining an inner bore; a fluidic passageway formed within the wall that is fluidically isolated from the inner bore; a portion of the wall being located between the inner bore and the fluid passageway and configured to maintain fluidic isolation between the inner bore and the fluid passageway until an opening is formed through the portion.

Abstract: 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 in the wellbore. The cleaning assembly is activated to clean the wellbore with the production device disposed at the target location.

Abstract: Embodiments described herein provide a downhole tool (e.g., a retrievable bridge plug) that includes a sealing device and a load retention/equalization mechanism. The sealing device includes an elastomer seal component and an expansion device configured to radially expand outwardly to compress the elastomer seal component against a wellbore casing within which the downhole tool is located. The sealing device further includes lower and upper support barriers configured to radially expand outwardly against the wellbore. The sealing device also includes a seal energizing spring configured to maintain an initial setting force of the elastomer seal component against the wellbore casing.

Abstract: A non-metallic tubular defines a central flow passage. Actuable rollers are actuable between an extended position and a retracted position. The actuable rollers are pivotally attached to the non-metallic tubular. The actuable rollers centralize the non-metallic tubular when in the extended position. The actuable rollers extend between the non-metallic tubular to an inner surface of the wellbore when in the extended position. A connector is attached to an uphole end of the non-metallic tubular. The connector is configured to attach to a downhole end of a work string.

Abstract: Disclosed are an expansion tool assembly, comprising: an expandable tubular; a guide shoe partially inserted into and connected to the lower end of the expandable tubular; a sealing sleeve arranged in the expandable tubular and connected to the upper end of the guide shoe; an expansion assembly comprising an expansion cone and expansion seat disposed inside the expandable tubular, wherein the lower end of the expansion seat is connected with hooks, which can be rested on the upper end of the sealing sleeve; an upper joint that is connected to the upper end of the expansion seat and can be connected to a drill string. A force transfer path can be established via connection between the expansion seat and sealing sleeve, so that expandable tubular weight is borne on the drill string. Unintentional expansion of the expandable tubular, caused by interaction between expandable tubular and expansion cone, can be avoided.

Abstract: A plug which does not cause an adverse effect such as failure of a member constituting the plug when a wellbore is plugged. The downhole plug (10) includes a mandrel (1) having a hollow structure, a sealing member (2) attached to an outer circumferential surface of the mandrel (1) and being deformable by exerted pressure, and a socket (3) attached, adjacent to the sealing member (2), onto the outer circumferential surface of the mandrel (1), downstream of where the pressure is exerted on the sealing member (2). An inner circumferential edge (31a) of the socket (3) which comes in contact with the mandrel (1) protrudes toward the sealing member (2).

Abstract: To condition a wellbore with a reamer on a wireline, a portion of a wellbore is formed from a surface of the earth toward a subsurface hydrocarbon reservoir using a wellbore drilling assembly. After forming the portion of the wellbore, the wellbore drilling assembly is removed from the portion of the wellbore. Using a wireline, a wellbore sampling tool and a reamer are lowered into the portion of the wellbore. While maintaining the wellbore sampling tool and the wireline in a non-rotational state, the portion of the wellbore is cleaned using the reamer.

Abstract: An apparatus of removing substances from horizontal wells drilled from a surface comprises: a casing, a tubing disposed within the casing, a downhole pump connected to an end of the tubing, and a production conduit attached to the downhole pump. The apparatus has a gas containing section of the well that leads to the production conduit. The gas containing section is configured to accumulate a first predetermined volume of gas. An annular space is formed by the casing, tubing and production conduit. A first one-way valve is disposed within the production conduit and that leads to the annular space. A first vessel contains a working fluid. The first vessel is in fluid communication with the first one way valve.

Abstract: A helical solid profile attached and originating from the outer diameter of a composite or steel sucker rod and extending approximately to the inner diameter of the production tubing, running axially along the sucker rod body and affixed to it for reinforcement and stabilization of the sucker rod tension member body in axial alignment to the central axis of the production tubing which the sucker rod member is housed in, whereas the helical solid profile is made of material which is for acceptable use within the production system environment, the helical solid profile purpose being to control and reduce the sucker rod's deflection during compressive moments, extending the life of the sucker rod or reduction in stress and erratic buckling cycles.

Abstract: A downhole tubular cutting system includes a cutter comprising an explosive material configured to cut a tubular. The system further includes a generator body coupled to the cutter on an end of the cutter such that the generator body will be oriented uphole or downhole of the cutter when the cutter is positioned with the tubular. A detonating cord or igniter fuse is disposed around the generator body.

Abstract: A system for recirculating a portion of a liquid fraction of multiphase production fluid to a pump for enhanced functionality thereof. The system includes a splitter assembly that obtains the multiphase production fluid from the pump. The splitter assembly utilizes multiple internal chambers to separate gas and liquid fractions of the fluid. A portion of the liquid fraction may then be recirculated back to the pump as indicated whereas the remainder of the liquid fraction may be recombined with the gas fraction for production.

Abstract: An apparatus includes a sleeve a sleeve having a slot defined by at least a first edge and a second edge of the sleeve. At least a portion of the first edge defines a left-handed helical portion of the slot. At least a portion of the second edge defines a right-handed helical portion of the slot. The left-handed helical portion and the right-handed helical portion are at different axial positions along the sleeve with respect to a center axis through the sleeve.

Abstract: A wellbore assembly includes a production string disposed inside a wellbore and a junk collector coupled to a downhole end of the production string. The junk collector has an upper rim defining an opening configured to receive wellbore junk. The junk collector receives wellbore junk through the upper rim at a downhole end of the production string and stores the wellbore junk.

Abstract: A method of electrically logging a section of a wellbore includes circulating an oil-based wellbore fluid within the wellbore and allowing filtration of the oil-based wellbore fluid to form a conductive filtercake on a wall of the wellbore; placing within the wellbore a wellbore logging tool with at least one pad capable of applying a current to a portion of the conductive filtercake and wellbore wall; applying electrical current from the at least one pad; and collecting an electrical log of the portion of the wellbore that has had electrical current applied thereto.

Abstract: Frac ball dispensers as well systems and methods employing such are disclosed. Configurations for remotely moving the frac ball dispensers in the vicinity of an open wellhead as well as remotely activating and verifying the dispensement of frac balls from the dispensers into the open wellhead are specifically provided. Configurations of frac ball dispensers to control access to frac balls therein as well as the dispensement of frac balls therefrom are also provided.