Jack A Nelson

US Patent:

58066144, Sep 15, 1998

Filed:

Jan 8, 1997

Appl. No.:

8/780695

Inventors:

Jack R. Nelson - Houston TX

International Classification:

E21B 1504

US Classification:

175 61

Abstract:

An apparatus and method for drilling a plurality of lateral wells from a main wellbore (10) including a junction joint (16) secured to the lower end of the lowermost casing string (14). The junction joint (16) includes an outer cylindrical housing (18) with a plurality of separate parallel guide tubes or tubular guide members (30A, 30B and 30C) secured to upper and lower plates (22 and 24) of the junction joint (16) and arranged to receive a pipe string. Entrance openings (26A, 26B, and 26C) are provided in upper plate (22) for the respective tubes (30A, 30B and 30C). A guide member (40) includes a small diameter alignment pin (54) and a pair of large diameter projecting pins (50). Upon alignment of guide member (40) with a selected tube (30A) by alignment of small diameter alignment pin (54) with an opening (38A) in upper plate (22), pins (50) are received within the upper ends of the non-selected tubes (30B and 30C) to close the non-selected tubes (30B and 30C). A drill string (76, FIG.

US Patent:

48725200, Oct 10, 1989

Filed:

Oct 13, 1988

Appl. No.:

7/256934

Inventors:

Jack R. Nelson - Houston TX

Assignee:

Triton Engineering Services Company - Houston TX

International Classification:

E21B 1046

US Classification:

175329

Abstract:

An earth drilling bit with a body having a flat bottom. A plurality of cutting elements positioned on the flat bottom including a polycrystalline diamond cutter. The cutters include an elongate apex with a face on both sides of the apex extending backwardly from the apex. The apex extends generally vertically with a slight rake for providing a chisel surface for acting on the earth even when when the cutter becomes worn. The cutter may include multiple apexes and have zero side rake. A plurality of fluid circulating channels are provided in the flat bottom and vertically along the outside of the body and a plurality of fluid nozzles are directed outwardly at an angle to the longitudinal axis of the body.

US Patent:

57327840, Mar 31, 1998

Filed:

Jul 25, 1996

Appl. No.:

8/684875

Inventors:

Jack R. Nelson - Houston TX

International Classification:

E21B 1026

US Classification:

175385

Abstract:

A drag rotary bit (10) has a bit body (12) with a center cutter element (34) for projecting from the bottom (22) of the bit body (12) at the axial center of the bit body (12). The center cutting element (34) has a pair of cutters (42) with cutting faces (46) thereon in opposed relation to each other. A pair of opposed relatively long blades (54) are mounted on the bottom (22) of the bit body (12) and extend across the entire bottom (22) of the bit body (12) to the center cutter (34) to divide the bottom (22) into two separate areas. A single nozzle (26) having a large diameter discharge port (28) is provided for each of the separate areas for cleaning the bottom of the hole and washing of the blades.

Address:

13244 Fm 729, Avinger, TX 75630

VIN:

1FAFP34N87W250287

Make:

FORD

Model:

FOCUS

Year:

2007