Abstract: A method of activating a tool can include displacing a device in the tool, the device transmitting energy to a receiver of the tool, thereby activating the tool, and the transmitting including a control circuitry increasing electrical current flow between an electrical power source and a transmitter in response to a sensor detecting a predetermined stimulus downhole. A system can include a tool including a receiver and an electrical load, and a device which displaces relative to the tool, the device including a transmitter, a sensor and an electrical power source. Another method can include displacing a device in a tubular string including multiple downhole tools, each including a receiver and an electrical load, and the device including a transmitter and a sensor. The transmitter transmits energy to at least one of the receivers in response to sensor detection of a predetermined number of the tools traversed by the device.

Abstract: An apparatus for pulling irrigation poly provides a transportable poly reel rig with a reel spool pivotally mounted to the reel rig. A manual primary brake is in hydraulic braking communication with the reel spool to manually control free spooling. A secondary brake, hydraulically integrated in a planetary gear drive connected to the spool, is activated automatically when hydraulic pressure falls below a safe level. A top alignment reel positioned under the reel spool, and a bottom alignment reel positioned under the top alignment reel, facilitate alignment of the reel spool with a well bore. A wire roller operating in concert with the reel spool facilitates attachment to and take-up of wire attached to the poly. Two or more hydraulic stabilizers stabilize the rig, as does a boom assembly mounted to the reel rig. Methods of using the apparatus utilize a smaller crew of operators than with prior apparatus.

Abstract: A method for determining when a plunger reaches the bottom of an oil or gas well equipped with a plunger lift system. More particularly, the method identifies a surface pressure associated with the plunger reaching the bottom.

Abstract: An apparatus including a bell nipple assembly defining a first internal passage that includes two sections forming first and second internal passages that may be aligned by a flexible connector disposed between first and second flanges in one of the sections to at least partially adjust for an offset amount caused by longitudinal axis misalignment of the other section. Methods of adjusting for longitudinal axis offset between two misaligned components, such as of a bell nipple zone, are also encompassed.

Abstract: Expandable brushes for cleaning a surrounding tubular member. Brushes include a housing to be disposed within the surrounding tubular member and a brush shoe that retains at least one brush bristle, the brush shoe being radially moveable with respect to the housing between a radially retracted position and a radially expanded position.

Abstract: A method for lifting fluids within a subterranean well includes lowering an elongated plunger to a lower region of a bore of the subterranean well. The plunger includes a motor assembly operably connected to a propeller. A seal can be created between the plunger and an inner surface of the bore of the subterranean well. A thruster, such as motor assembly connected to a propeller, generates thrust to lift the plunger to a plunger retainer located proximate to a wellhead of the subterranean well.

Abstract: A bottom hole assembly carrying an expandable tubular is disposed in a portion of a wellbore having a lost circulation zone, and the tubular is radially expanded to isolate the wellbore from the formation across the lost circulation zone. The expandable tubular is made up of a rolled up sheet like member and mounts along the outer periphery of a portion of the bottom hole assembly. A bladder on the bottom hole assembly is inflated for expanding the tubular radially outward against the wellbore wall. A drill bit and underreamer are included with the bottom hole assembly.

Abstract: A system comprising a control valve comprising a flapper either activated or inactivated, when activated the flapper may be closed or open and, when inactivated the flapper is open, a first sleeve transitional from a first to a second position, and a second sleeve transitional from a first to a second position, when the first and second sleeves are in the first position, the flapper is activated, when the first sleeve is in the second and the second sleeve is in the first position, the flapper is inactivated, when the first and second sleeves are in the second position, the flapper is activated, the application of pressure to the first sleeve via a first member transitions the first sleeve from the first to the second position, and the application of pressure to the second sleeve via a second member transitions the second sleeve from the first to the second position.

Abstract: A method to be used when performing drilling in a well bore and a device for performing the method are disclosed. The method includes positioning in the well bore a drill string comprising at least two pipe conduits, an upper end, and a lower end comprising a drilling tool, thereby forming an outer annulus between the well bore wall and the drill string. A well bore section comprising at least one u-shaped section is drilled. A first fluid with a first density is fed into the outer annulus above the u-shaped section, and a second fluid with a second density is provided within the drill string and around the tool, where the first density is larger than the second density.

Abstract: A system is provided for injecting coiled tubing (CT) into and out of a wellbore. In embodiments, separate injector and reel units are provided releasing constraints on CT size and length. The injector unit is fit with an extendible mast for handling larger bottom hole assemblies and fit with a rotating gooseneck for accepting CT from alternate arrangements of the reel unit. The mast is reinforced to resist CT loading. The capacity of the reel is maximized for the reel unit transport envelope. The reel is rotated using an offset drive engaging a bounding reel flange, such as engaging drive and bull gears. A generally radial displacement of the drive from the reel permits replacement of the entire reel.

Abstract: The power charge of a wireline pressure setting assembly includes a barrier located adjacent an open upper end of the power charge. The barrier centralizes the power charge in horizontal applications to ensure the associated tool properly sets. The barrier also limits how much of the power charge can flow out of its housing in a horizontal application. The barrier can be porous or impervious to contain as much of the power charge in a small sub-chamber in the pressure chamber defined by the barrier. Once ignition starts in the power charge the barrier can be consumed or otherwise disabled for the normal functioning of the setting device to set a tool and release from the set tool in a normal manner.

Abstract: Apparatus and corresponding method for remotely communicating with a device in a wellbore, comprising: an oilfield tubular handling apparatus (200); partial toroidal coil sections (304) integrated with the oilfield tubular handling apparatus, wherein the partial toroidal coil sections form a toroidal coil upon a tubular member (102) with the handling apparatus; and a microcontroller for communicating with the device via at least one of signals transmitted or received through the tubular member using the toroidal coil.

Abstract: A system for heating hydrocarbon resources in a subterranean formation having spaced-apart wellbores therein aligned in a plane may include radio frequency (RF) antennas to be positioned within respective ones of the spaced apart wellbores aligned in the plane. The system may also include a plurality of discrete RF sources each coupled to one of the RF antennas and configured so that the RF antennas are driven at a same frequency as each other RF antenna but at different phases.

Abstract: The present invention provides a hard-rock core barrel roller cutter assembly, which comprises a roller cutter and a saddle. The roller cutter comprises a base portion for operating, and a connecting portion integrated with the base portion and detachably connected to the saddle. The connecting portion has a butted oblique plane, and a width of the connecting portion is gradually increased from one end adjacent to the base portion to another end far away from the base portion. A fixing block is detachably connected to the saddle, and the fixing block has a pressure slope which matches with the butted oblique plane. A width of the fixing block is gradually decreased from one end adjacent to the base portion to another end far away from the base portion, and the saddle is muff-jointed out of the connecting portion and the fixing block.

Abstract: A method for separating a pipe comprising a pipe axis, a pipe wall, a pipe interior, an inside pipe circumference, an upper end to be separated, and a lower end, the pipe being anchored in the ground by the lower end, includes providing a cutting assembly comprising at least one water jet nozzle which produces a water jet. The cutting assembly is lowered into the pipe interior through the upper end to be separated down to a separation zone. The pipe is cut with the cutting assembly. The cutting assembly acts progressively against the inside pipe circumference. The water jet, when activated, produces a cut comprising a substantially constant cut width and two complementary conical cut surfaces. The water jet is directed at an angle (?) to a plane which runs perpendicular to the pipe axis so that the cut runs diagonally through the pipe wall.

Abstract: An orienting hanger comprises a generally tubular inner hanger, a generally tubular outer collar, and a cylindrical tool adapter. Box and pin connections at the ends of the outer collar enable the orienting hanger assembly to be threadably inserted into a BHA. One end of the tool adapter is disposed to threadably engage the inner hanger, and the other end is disposed to threadably receive an MWD tool. The inner hanger is disposed to be received into the outer collar such that annular shoulders abut, whereupon the MWD tool is suspended from the inner hanger. The inner hanger provides structure to enable the high side of the MWD tool to be aligned with the zero degrees tool face on the BHA and then locked into that position within the outer collar.

Abstract: A permanent inflatable packer enabling wellbore isolation in both open hole and cased hole wells expands multiple times its original diameter to conform to borehole irregularities and eccentricities. Cement, water based mud or oil based mud activation fluid under prerequisite fluid pressure causes retainer to slide upon a mandrel causing fracture of shearing screws and compression of Belleville metal ring washers to enable activation fluid to flow around an O-ring and into a recess area to effectuate inflation of ribs sandwiched between rubber layers.

Abstract: A lateral wellbore is formed from a high side of a horizontal portion of a primary wellbore with a drill bit assembly that has a selectively extendable pilot bit. The drill bit assembly is mounted on a lower end of a drill string. A bit guide is disposed adjacent the drill bit assembly for urging the drill bit assembly in a lateral direction against the high side of the primary wellbore. Rotating the drill bit assembly while urging the drill bit assembly upward creates a groove in a subterranean formation adjacent the primary wellbore. This forms a ledge at a far end of the groove. The drill string is then drawn back from the groove, and the pilot bit is deployed. Urging the drill bit assembly forward engages the pilot bit with the ledge, providing leverage for retaining the drill bit assembly in an orientation for excavating the lateral wellbore.

Abstract: A technique that is usable with a well includes deploying a plurality of location markers in a passageway of the well and deploying an untethered object in the passageway such that the object travels downhole via the passageway. The technique includes using the untethered object to sense proximity of at least some of the location markers as the object travels downhole, and based on the sensing, selectively expand its size to cause the object to become lodged in the passageway near a predetermined location.

Abstract: A bi-stable valve includes a first chamber having a first aperture and a second aperture, and a second chamber having a first aperture and a second aperture. The bi-stable valve also includes a shaft having a first valve member adjacent a first end of the shaft and a second valve member adjacent an opposite second end of the shaft. The shaft is movable between a first position, in which the first valve member closes off the second aperture of the first chamber and the second valve member closes off the second aperture of the second chamber to prevent fluid from passing through the second apertures of the first and second chambers, and a second position, in which the first valve member and the second valve member allow fluid to pass through the second aperture of the first chamber and the second aperture of the second chamber.