Abstract: A short radius drilling tool and a trajectory-controllable lateral drilling tool and method, including a lateral drilling section with high passing ability and a power transmission section, wherein the lateral drilling section with high passing ability can drill the extension well section of a short to ultra-short radius well section that extends laterally from a main wellbore. The designed trajectory-controllable lateral drilling tool allows a wellbore to be subjected to directional drilling with a short to ultra-short radius from a tail end or any position of the original wellbore trajectory, and then implements lateral extension drilling.

Abstract: An apparatus configured to be positioned on a tubular string in a wellbore formed in a subsurface formation. The apparatus comprises a generator assembly disposed on the tubular string and configured to output power to a downhole tool. The generator assembly includes a first generator configured to output a first power to the downhole tool. The generator includes a second generator configured to function as an exciter for the first generator.

Abstract: An apparatus with a straddle packer for use within a wellbore. The straddle packer can include a tubular body comprising a first bore and a second bore and a first sealing element configured to seal against an inner surface of a casing installed within the wellbore. A second sealing element configured to seal against the inner surface of the casing, and the second bore can be located between the first sealing element and the second sealing element. An obstruction disposed in association with the tubular body, wherein the obstruction is movable between a first position in which the obstruction opens the second bore and a second position in which the obstruction closes the second bore.

Abstract: A method of dispensing a plug can include deploying the plug into a tubular string including a plug dispenser tool, and applying a pressure differential across the plug, thereby discharging the plug into an annulus surrounding the plug dispenser tool. A plug dispenser tool can include an outer housing having a plug discharge port that provides fluid communication between an exterior of the outer housing and a flow passage extending longitudinally through the plug dispenser tool, and a piston slidably disposed in the outer housing between a closed position in which the piston blocks fluid flow through the plug discharge port, and an open position in which fluid flow through the plug discharge port is permitted. A system can include a plug dispenser tool configured to discharge the plug into an annulus surrounding the plug dispenser tool in response to a predetermined pressure differential applied across the plug.

Abstract: A system, such as a bottom hole assembly, having a central body (18), at least one hydrostatically-actuatable assembly (50) configured to extend radially outward from the central body (18), the hydrostatically-actuatable assembly (50) having at least one N piston body (76) exposed to hydrostatic pressure; a plurality of passive structures (54), each of which is: configured to extend radially outward from the central body (18); and circumferentially spaced from the at least one hydrostatically-actuatable assembly (50) and another one of the plurality of passive structures.

Abstract: Methods and an apparatuses are for determining at least one property of a wellbore fluid system. A measurement apparatus having one or more pipe sections is provided, a drilling fluid is communicated through the pipe section, at least one density which is associated with at least one condition of pressure and temperature of the drilling fluid in the pipe section is measured, and the density of the drilling fluid is measured to determine the property of the wellbore fluid system.

Abstract: A gyroscope assembly is maintained in a park position during drilling activities. In the park position, a sensitive axis of a gyroscope in the gyroscope assembly is perpendicular or approximately perpendicular to a longitudinal axis of a downhole tool. Maintaining the park position during drilling activities reduces the drift bias caused by overloading the input signal of the gyroscope due to rotation of the downhole tool.

Abstract: A frangible disk sub including a housing, a break mechanism disposed in the housing a carrier movably disposed in the housing, a frangible disk supported by the carrier and movable with the carrier into contact with the break mechanism, and a release mechanism restraining movement of the carrier until a threshold load is exceeded. A method for rupturing a frangible disk including exceeding a threshold load with on the sub, releasing the release mechanism, moving the carrier and the frangible disk toward and into contact with the break mechanism, and rupturing the frangible disk with the break mechanism. A borehole system including a borehole in a subsurface formation, a string in the borehole, and a frangible disk sub disposed within or as a part of the string.

Abstract: A clamp for a line including a body, and a control line contact surface, the clamp being responsive to a selected input to facilitate displacement of the line. An expandable tool including a component having a first dimension prior to activation and a second dimension after activation, a control line disposed adjacent the component, and a clamp initially securing the control line, the clamp comprising at least one of 1) a fastener and 2) a body, at least a portion of either of which being responsive to a selected input to facilitate displacement of the control line. A method for deploying a tool with a control line including securing the control line to the tool, reacting the at least a portion of the clamp to the input, and displacing the control line. A borehole system including a borehole in a formation, and an expandable tool disposed in the borehole.

Abstract: A method for improving sealing in boreholes includes temperature controlling seals to maintain sealing loading by managing temperature of the seal to a target temperature range. A borehole system includes a borehole in a subsurface formation, a string in the borehole, a seal tool in contact with the string and temperature controller within or in thermal proximity to the seal.

Abstract: A method and apparatus for separating of gas from liquids in a wellbore, the apparatus enabling the receiving of wellbore fluids into two or more production separation chambers, operating in parallel. The apparatus further enabling the receiving of production separation chamber fluids into a production pipe through a thief jet port disposed in a lower chamber beneath the production separation chambers. The apparatus further enabling extraction of bottom hole gas fluids in the wellbore from under the two or more production separation chambers and disposing the gas fluids back into the wellbore above the two or more production separation chambers.

Abstract: The present invention relates to a downhole assembly for permanently sealing off a control line controlling a well component of a well tubular metal structure prior to plug and abandonment of a well having a top, comprising a first part of a tubular line, a second part of the tubular line, a downhole closure unit arranged between the first part and the second part of the tubular line and comprising a first element comprising a first opening, a second opening and fluid communication channel between the first opening and the second opening, the first opening being arranged closer to the top than the second opening, the first opening having a first connection to the first part of the tubular line, and the second opening having a second connection to the second part of the tubular line, wherein the first element has a first outer shape in a first state in which the fluid communication channel is open and a second outer shape in a second state in which the fluid communication channel is closed, the second shape be

Abstract: A wellbore assembly includes a wellbore string disposed within a wellbore and a cement retainer coupled to a downhole end of the wellbore string. The cement retainer includes a housing, a packer, a valve, and a sleeve. The housing includes one or more fluid ports extending from an interior surface of the housing to the annulus. The housing defines a first fluid pathway extending from within the wellbore string to within the housing. The sleeve is movable between a first position, in which the sleeve blocks the one or more fluid ports, and a second position in which the sleeve exposes the one or more fluid ports to open a second fluid pathway extending from the annulus, through the one or more fluid ports, to the first fluid pathway. Opening the second fluid pathway allows mixing of a first fluid with a second fluid in the cement retainer.

Abstract: A pressure management device (PMD) for direct connection to a blowout preventor stack of a managed pressure drilling system, the PMD comprising a housing, one or more chokes, and a directional valve. The directional valve has a choke position and a bypass position. When the directional valve is in the choke position, the PMD operates to divert fluid entering the housing to one or more of the chokes. When the directional valve is in the bypass position, the PMD operates to divert fluid entering the housing to bypass the chokes. The inlet and outlet of each choke may be controlled by a dual shutoff valve, to selectively permit and restrict fluid flow through each choke.

Abstract: A wellsite system for electrically-driven fracturing may include a power supply system, one or more electrically-driven fracturing systems, one or more electrically-driven sand blenders, a sand supply system, a liquid supply system, and one or more manifolds. The power supply system includes a gas turbine generator set configured to provide power to the one or more electrically-driven fracturing systems and the one or more electrically-driven sand blenders respectively. The sand supply system and the liquid supply system are both connected to input ends of the electrically-driven sand blenders. Output ends of the electrically-driven sand blenders are connected to the electrically-driven fracturing systems through the one or more manifolds. The electrically-driven fracturing systems are connected to a wellhead through the one or more manifolds.

Abstract: Provided is an anchoring mechanism, a method for anchoring a downhole tool, and a well system. The anchoring mechanism, in one aspect, includes a tubular housing, a hub disposed about to the tubular housing, and a wedge hub disposed about the tubular housing, wherein at least one of the hub or wedge hub is slidably disposed about the tubular housing. The anchoring mechanism, according to this aspect, further includes one or more telescoping arms and one or more fixed toggle arms, wherein a first end of the one or more telescoping arms is coupled to one of the hub or the wedge hub, a first end of the one or more fixed toggle arms is coupled to an other of the wedge hub or the hub, and a second end of the one or more telescoping arms and a second end of the one or more fixed toggle arms are coupled to one another at a location between the first end of the one or more telescoping arms and the first end of the fixed toggle arms.

Abstract: An electrically operated catcher mechanism that is part of a lubricator and catcher unit used in conjunction with a bypass plunger in an oil or gas well include an electrically operated mechanism to move between the catch and release positions. The electrically operated catcher mechanism includes a cam rotated by a motor which causes the device to move between catch and release positions.

Abstract: A fiber optic cable conducts optical fiber to downhole gauges in a wellbore. Cable connections are used to protect splicing of the optical fiber between cable sections and the gauges. The cable connection includes adjoining tubes, which have passages for the optical fiber. The tubes are nested together and enclose the splicing of the optical fiber. A cable-end tube is affixed to a section of the cable with the passage overlaying a jacket of the cable, and a gauge-end tube is affixed to an end of the downhole gauge with the passage overlaying the end of the downhole gauge. At least one spanning tube has ends that are affixed nested inside the passages of the adjoining ones of the tubes. The cable connections allow the cable and gauges to be wound on a spool or reel for installing into the wellbore.

Abstract: A method for manufacturing a joint pipe element of a well system includes providing an outer pipe having a bore; providing an inner pipe having a bore; placing the inner pipe in the bore of the outer pipe; and connecting the inner pipe to the outer pipe with a connecting mechanism so that a rotational torque is transferred from the outer pipe to the inner pipe.

Abstract: A hybrid bit includes fixed blades and wheel support structures. The wheel support structure includes a wheel inserted into a slot between a leading support and a trailing support. One or more shims fill a gap between a flange and the leading supports. An elongated seal between the wheel and the supports is provided to seal the wheel support.