JET MOTOR

• US 20100078219A1
• Filed: 12/04/2009
• Published: 04/01/2010
• Est. Priority Date: 03/31/2006
• Status: Active Grant

• Current Assignee: Coil Tubing Technology, Inc., Jason L. Swinford
• Original Assignee: Jerry Swinford
• Inventors: Swinford, Jerry
• Granted Patent: US 8,151,908 B2
• Time in Patent Office: Days
• US Class Current: 175/57
• CPC Class Codes: E21B 37/04 operated by fluid pressure, e.g. free-piston scrapers
• CPC Class Codes: E21B 4/02 Fluid rotary type drives
• CPC Class Codes: Y10S 415/903 Well bit drive turbine

Abstract

An exemplary embodiment of the jet motor includes a control sleeve, and power shaft having at least one opening thereon. The power shaft is rotatable in relation to the control sleeve. The power shaft has a central longitudinal shaft axis and upper and lower ends. The at least one opening in the power shaft generates rotational torque when acting in cooperation with the control sleeve. The jet motor connects to a member that is in fluid communication with the source of drilling or cleaning fluid. Drilling or cleaning fluid pressure is directed to the at least one opening in the power shaft. The power shaft having at least one opening having an opening axis and an interior opening. The at least one opening may be acutely oriented with respect to a plane extending along the power shaft'"'"'s central longitudinal axis wherein the plane intersects the opening axis at the interior opening. The at least one opening may be oriented toward the upper end of the power shaft to provide downward force. An alternative embodiment with a drill bit functionally connected to the power shaft wherein the drill bit contains drill bit nozzles that provide both rotational and forward force when a fluid is passed therethrough.

Claims

1. An apparatus comprising:

a control sleeve;

a power shaft;

said power shaft at least partially surrounded by said control sleeve;

said power shaft rotatable in relation to said control sleeve;

said power shaft having a shaft wall;

said power shaft having an interior power shaft channel;

at least one opening provided in said shaft wall;

said at least one opening in fluid communication with said shaft channel;

said at least one opening in said shaft wall having an interior opening and an opening axis;

said power shaft having a central longitudinal shaft axis and an upper end and a lower end; and

said opening axis of said at least one opening in said shaft wall acutely oriented with respect to a plane extending through said central longitudinal shaft axis wherein said plane intersects said opening axis at said interior opening.

2. An apparatus comprising:

a power shaft;

a drill bit operationally connected to said power shaft;

said drill bit having a cylinder wall;

said drill bit having a longitudinal drill bit axis;

at least one drill bit opening provided in said cylinder wall;

said at least one drill bit opening having an opening axis;

said opening axis acutely oriented in relation to the direction of the upper end of said power shaft;

said at least one drill bit opening having an interior opening; and

said opening axis acutely oriented with respect to a plane passing through said drill bit axis at said interior opening.

3. A method comprising:

providing a control sleeve with an independently rotatable power shaft disposed therein, wherein said power shaft has a shaft wall, a central longitudinal shaft axis, and an upper end and a lower end, and wherein said power shaft has at least one opening in said shaft wall having an interior opening and an opening axis, wherein said opening axis of said at least one opening in said shaft wall is acutely oriented with respect to a plane extending through said central longitudinal shaft axis wherein said plane intersects said opening axis at said interior opening; and

introducing a fluid under pressure to the rotatable power shaft such that the fluid is forced through said at least one opening.

4. A method comprising:

providing a control sleeve with an independently rotatable power shaft disposed therein, wherein said power shaft has an upper end and a lower end and is functionally attached to a drill bit at said lower end of said power shaft, and wherein said drill bit has a cylinder wall and a longitudinal drill bit axis, with at least one drill bit opening, within said cylinder wall, having an opening axis and an interior opening, wherein said drill bit opening is acutely oriented in relation to the direction of the upper end of said power shaft and said opening axis is acutely oriented with respect to a plane passing through said drill bit axis at said interior opening; and

introducing a fluid under pressure to the rotatable power shaft such that the fluid is forced through said at least one drill bit opening.