Ruben C Boyter

6523624, Feb 25, 2003

Jan 10, 2001

09/758297

James E. Cousins - Shreveport LA, 71105
Ruben C. Boyter - Shreveport LA, 71118

E21B 1026

175386, 175 78, 175320, 175426

A sectional drive system for transmitting rotational power to an output, which system includes multiple splined drive segments which are nested and interlocked as a drive string that is rotatable in a selected straight or curved path. The top one of the drive segments cooperates with a drive mechanism to effect rotation of the nested drive segments in concert, and the bottom one of the drive segments connects to a suitable output such as a drill bit. Multiple, tapered and truncated exterior splines on each of the drive segments mesh with complementary interior splines on the adjacent drive segment to enable slight angular positioning of the drive segments on each other and facilitate dampening of drive vibration and bending of the drive string in or out of the chosen path in any desired direction as the drive string transmits rotational power in a curved path of desired magnitude from the drive mechanism to the output. The drive segments are typically connected internally by means of a cable or shaft, or may be connected by floating âcollarsâ, to form the drive string. In a preferred embodiment, a drill bit having a removable center bit insert is mounted on the bottom one of the drive segments on the drive string, and is characterized by multiple interior splines which engage the companion exterior splines of the drive segment.

7810586, Oct 12, 2010

Nov 17, 2008

12/313073

James E. Cousins - Shreveport LA, US
Ruben C. Boyter - Shreveport LA, US

E21B 17/00
F16D 3/18
F16D 3/44

175101, 175320, 464157

A sectional drive and coupling system for transmitting rotational power to an output, which system includes multiple, splined drive and receiving segments that are connected, nested and interlocked in the ends of successive segment housings to define a drive string that is rotatable in a selected straight or curved path. The top one of the segments cooperates with a drive mechanism to effect rotation of the drive string in concert and the bottom one of the segments connects to an output such as a drill bit. Multiple, tapered and truncated exterior splines on the drive segments mesh with complementary interior splines on the adjacent receiving segments in the segment housings to enable slight angular positioning of the sets of drive and receiving segments on each other and facilitate dampening of drive vibration and bending of the drive string in or out of the chosen path in any desired direction as the drive string transmits rotational power in a curved path of desired magnitude from the drive mechanism to the output. The drive and receiving segments are typically connected internally by a bolt, nuts and belleville springs at the ends of the housings to form the drive string. In one embodiment a drill bit is mounted on the bottom one of the segments on the drive string for interval drilling.

59112832, Jun 15, 1999

Sep 30, 1997

8/940839

James E. Cousins - Shreveport LA
Ruben C. Boyter - Shreveport LA

Perf Drill, Inc. - Shreveport LA

E21B 708

175 78

A sectional drive system for transmitting power linearly or in a curved path to an output, which system includes multiple, tapered and splined, interlocking drive segments which are nested and stacked as a segment string that is rotatable in a selected path. The top one of the segments cooperates with a drive mechanism to effect rotation of the nested segments in concert and the bottom one of the segments connects to a suitable output such as a drill bit. Articulation of the segments with respect to each other due to matching asymmetrical splines and companion spline slots having drive faces and spline support faces of dissimilar size, facilitates dampening of drive vibration and bending of the segment string in or out of the chosen path in any desired direction to facilitate transmitting power in a curved path of desired magnitude from the drive mechanism to the output. The segments are typically connected internally by means of a cable or shaft or externally by "floating" collars to facilitate articulation as a segment string.

56998660, Dec 23, 1997

May 10, 1996

8/644372

James E. Cousins - Shreveport LA
George R. Markiel - Benton LA
Ruben C. Boyter - Shreveport LA

Perf Drill, Inc. - Shreveport LA

E21B 708

175 78

A sectional drive system for transmitting power linearly or in a curved path to an output, which system includes multiple, tapered and splined, interlocking driving segments which are nested and stacked as a segment string that is rotatable in a guide path. The top one of the segments cooperates with a drive mechanism to effect rotation of the nested segments in concert and the bottom one of the segments connects to a suitable output such as a drill bit. Articulation of the segments with respect to each other due to matching asymmetrical splines and companion spline slots facilitates dampening of drive vibration and bending of the segment string in the guide path in any desired direction to facilitate transmitting power in a curved path of desired magnitude from the drive mechanism to the output. In a typical application the interlocking driving segments are incorporated in a downhole drilling apparatus designed for insertion in a well bore to facilitate drilling holes at selected angles in an uncased hole or through the well casing, cement sheath and producing interval to enhance well production. The driving segments and bit will continue travelling in a straight line and continue on the same path presented when existing the guide path from the downhole drilling apparatus.