Patent application number | Description | Published |
20100012379 | Joint for use in back reaming - A joint according to the invention for connecting a pair of members rotatable about a common axis end to end. A sleeve has a non circular profile on an inner surface thereof whereby the sleeve can be slidably mounted on non circular exterior surfaces of the first and second members when such surfaces are brought into alignment by rotation of one member relative to the other in a manner effective to pass torque from one member to the other by means of the non circular surfaces. A fluid release passage includes a radial port that extends from the first longitudinal fluid supply passage to a clearance between the sleeve and the first member, which clearance communicates with a second clearance between the sleeve and the second member, which second clearance has a discharge opening. | 01-21-2010 |
20100219835 | Non-magnetic transmitter housing - A sonde assembly of the invention includes: a sonde housing in the form of a non-magnetic tube having windows therein for permitting a radio signal to be transmitted out the tube from the inside; | 09-02-2010 |
20110188943 | Rod Pulling And Pushing Machine For Pipe Bursting - A rod pushing and pulling machine includes at least one hydraulic cylinder having a front end thereof engagable with a reaction surface at an entry opening of an existing pipeline or borehole, a spindle assembly, and a dual vise assembly. The spindle assembly includes a frame, a spindle shaft rotatably mounted in the frame, a distal end of the spindle shaft being threaded for engagement with a mating thread of a rod, a drive system for rotating the spindle shaft in threading and unthreading directions, the spindle frame being secured to a rear end of the hydraulic cylinder for pushing or pulling of a rod string engaged to the spindle shaft upon extension or retraction of the hydraulic cylinder, and a support assembly for the spindle shaft. The support assembly includes a set of roller bearings rotatably supporting the spindle shaft, a radial flange on the spindle shaft, and a load flange secured to the spindle frame positioned to engage the radial flange, whereby the radial flange comes into engagement with the load flange during pulling operation to prevent rotation of the spindle shaft during pulling operation, and leaves engagement with the load flange during pushing operation so that the spindle shaft may rotate during pushing operation supported by the roller bearings. The dual vise assembly has two pairs of separately actuable jaws positioned to grip a rod nearest the spindle shaft and a rod adjacent the rod nearest the spindle shaft. | 08-04-2011 |
20120043801 | METHOD AND APPARATUS FOR CREATING A PLANAR CAVERN - Methods and apparatuses for producing a planar cavern are provided. The planar cavern is formed by first creating a continuous bore that extends through a subsurface resource deposit. The drill head used to create the bore can be steered in response to information about the concentration of the resource in the strata through which the drill head is passing, in order to keep the bore within resource deposit. The continuous bore can be formed by connecting first and second bores at a point within the subsurface resource deposit. After the continuous bore has been formed, a sawing assembly is placed within the continuous bore. The sawing assembly is then moved, in a continuous or in a reciprocating fashion, within the continuous bore. As the sawing assembly is moved, it is maintained under tension, to create a planar cavern. By thus exposing a large area of the resource deposit, a relatively large amount of the resource deposit can be dissolved in a solvent introduced to the planar cavern per unit time. Saturated solution can then be pumped from the planar cavern, and the resource recovered from the saturated solution by evaporation. | 02-23-2012 |
20120235686 | Non-Magnetic Transmitter Housing - A sonde assembly of the invention includes a sonde housing in the form of a nonmagnetic tube having windows therein for permitting a radio signal to be transmitted out the tube from the inside, means such as a device enclosing a front end of the tube, a sonde disposed inside the non-magnetic tube and closely fitting in a sonde cavity thereof in engagement with a front end plug. The sonde comprises a sensor and a transmitter connected to the sensor to transmit a directional signal based on sensor output, which sensor and transmitter are disposed inside a non-magnetic sonde cavity. | 09-20-2012 |
20130098686 | Dynamic Steering Tool - The present invention is directed to a dynamic steering tool for use with a horizontal directional drilling machine. The tool comprises and inner member, an outer member, a steering member, a drill stem, and a drill bit. The drill stem extends from within a borehole to the surface while the outer member only extends the length of the inner member within the borehole. The outer member is powered via the use of a progressive cavity motor. In operation, the drill stem, inner member, and drill bit rotate in a clockwise position while the outer member rotates in a counterclockwise direction. Rotating the outer member opposite the inner member allows the outer member to remain stationary and cause the tool to steer while the inner member continues to rotate. | 04-25-2013 |
20130343814 | Quick Connect Rods - The present invention is directed to a rod string with a plurality of rod sections and a method for making up and breaking out the rod sections. The rod sections have corresponding pin and box ends, each having grooves and lands and an ungrooved portion. The rod sections can be connected by inserting the pin end into a box end and turning less than a full turn. A lock engagement mechanism having a first end and a second end is provided inside the rod sections and locks when the pin end is rotated into place. The lock engagement mechanism has a rotation stop which protrudes proximate the first end to prevent relative rotation of two rod sections until a key manipulates the lock engagement mechanism to retract the rotation stop. | 12-26-2013 |
20140294512 | Powered Slip Actuation - A system for pushing and pulling rod strings through the ground or an underground pipe. The apparatus has a downhole tool attached to the distal end of the rod string. The push/pull machine has a stationary frame that is placed against the ground to provide a reaction surface. The stationary frame has an opening for the rod string to pass through. A rod gripping assembly is supported on the machine frame and moveable relative to the stationary frame. The rod gripping assembly has a slip bowl, jaws, a thrust member and an actuator. The actuator powers movement of the jaws into the slop bowl to cause a powered gripping of the rod string by the machine. With the rod string gripped a cylinder assembly is activated to push the rod gripping assembly toward the stationary frame thereby pushing the rod string into the ground. | 10-02-2014 |
20150014060 | Tricone Bit Construction - A roller cone drill bit having detachable rotatable arms. The arms are connected at a mounting pad to the bit body. Each arm has its own grease delivery system to provide lubrication to the interface between the arms and rolling elements at an end of each arm. The forward-facing contact surface between the bit body and the arms is at an angle, relative to the central axis of the bit, that is ninety degrees or more. | 01-15-2015 |