Other

Team Construction and Fabrication, Inc.

Pioneer Fishing and Rental Tools, Inc.

Thomas E Falgout, Sr

William N Schoeffler

A drill string deflection tool is arranged to function as a segment of drill string. An upper and a lower portion telescope together to form a mid-section with limited telescoping movement and limited angular deflection of the axes of the opposite ends. Axial load compresses the tool and a cam and fulcrum arrangement deflects the tool when it is axially compressed. The tool extends axially when pulled in tension and the axis becomes straight. Drilling fluid pressure acts on rams in the tool to lock it in whatever state exists when pressure is applied. The locking mechanism acts upon the drilling fluid channel to cause a pressure drop, detectable at the surface, that indicates the state of the tool downhole.

Deviation control tool

A drilling tool having a body that functions as a length of drill string and telescopes to shorten the body each time column load is applied by way of applied bit load. The telescoping action causes a cam turret in the body to change position to cause one of two possible conditions to exist while drilling. In one condition the body centerline is held straight while drilling. In the second condition the lower portion of the body is laterally deflected for changing the course of the well bore while drilling proceeds. Optional features cause a mud pressure signal to be generated, for detection at the surface, when selected elements in the apparatus are in preselected positions.

Well drilling tool

A body and driveshaft extension for down hole drilling motors to allow the down hole assembly to operate as part of a drill string responsive to selected manipulations of the drilling fluid flow rate, carried out at the earth surface, to assume either a straight hole drilling configuration or a directional drilling configuration by choice of the driller. In the directional drilling configuration, the drill head driving output shaft rotates about a centerline deflected from the motor general centerline. The point of deflection is between the drilling motor and the drill head.

Drilling motor deviation tool

An improved powered pipe tong has a frame with a generally central opening and a drive ring with pipe gripping dies arranged for rotation in the opening, about an axis. A fluid powered motor and associated gearing powers the drive ring in either direction about the axis. The dies are closed on pipe to be rotated by energy supplied by a fluid powered ram mounted in the frame and actuated to extend into the drive ring to force pipe gripping dies into gripping contact with pipe. Once the dies are forced into gripping contact with the pipe they are locked in position and the fluid powered ram is withdrawn into the frame to allow the drive ring to rotate with gripped pipe. The lock that holds the dies in closed gripping position while the drive ring rotates can be released in any position of rotating parts. The drive ring is then rotated into position for the ram to again apply force to drive ring mounted parts. If the tong has a side opening, or gap, the ram is in position to apply force when the ring and frame gaps are aligned.

Power tong improvement

A hydraulic drill string jar is powered and actuated by drilling fluid pressure controlled from the earth surface. By selective manipulation of drilling fluid flow, the jar can be conditioned to operate in drilling mode to avoid activation of the jars while normal drilling and fluid flow activities take place. By different fluid flow manipulations, the jar is conditioned to operate in the jarring mode. In the jarring mode, the jars will axially shock the drill string each time the flow rate is reduced below a preselected amount and then increased to a higher preselected amount.

Fluid Powered drilling jar

A length of drill string, or a sub, functions as a body to which an encircling sleeve is rotationally and axially secured. The sleeve is arranged to permit some radial movement on the body and is spring biased in one radial directiion. A radial projection of some axial length extends from the sleeve in the biased direction to engage the well bore wall. During drill string rotation, the projection engages a near side wall more forcefully than other parts of the well bore periphery. The forceful engagement between projection and wall deranges the tendency for a curved drill string centerline to lie in a stationary plane when the drill bit has a tendency to depart from an original course while drilling. The bias allows the sleeve to be pushed toward a more centralized position on the body but the fluid damping inherent by changing clearances between sleeve and body, while the tool is immersed in drilling fluid, retards the centralizing movement. The damping effect is influenced by drill string rotation and the rotation speed can be controlled from the surface.

Well deviation control tool

A body, functioning as a length of drill string, has an eccentric roller mounted for rotation around the body. The roller and body have cooperating cam surfaces that cause the roller to reciprocate axially when the body rotates relative to the roller. In use, the extended radius of the eccentric roller engages the near side of the well bore walland tends to become stationary relative to earth. The forced axial motion of the retarded roller induces some peripheral motion at each turn of the drill string. The eccentric roller turns freely with the drill string when the extended radius is adjacent the far side of the well bore wall. The extended radius of the roller tends to spend most of the drilling time between the drill string and the near side, or low side, of the well bore to aid in well bore deviation control.

Growing community of inventors

Youngsville, LA, United States of America

Thomas E Falgout, Sr