Alan W Burkhard

6575244, Jun 10, 2003

Jul 31, 2001

09/918929

Lingo Chang - Missouri City TX
Roger Suter - Missouri City TX
Alan Burkhard - Houston TX

M-I L.L.C. - Houston TX

E21B 2108

16625015, 16625007, 16625001, 166 66, 166374, 175 25, 175 48, 7315222, 7315246

A borehole includes a tubular member, a sealing member for sealing an annulus between the tubular member and the borehole, a pump for pumping fluidic materials into the tubular member, and an automatic choke for controllably releasing pressurized fluidic materials out of the annulus. A system and method monitor the operating pressure within the tubular member and compare the actual operating pressure with a desired operating pressure. The difference between the actual and desired operating pressure is then processed to control the operation of the automatic choke to thereby controllably bleed pressurized fluidic materials out of the annulus thereby creating back pressure within the borehole.

6679385, Jan 20, 2004

Jan 11, 2002

10/044681

Roger Suter - Missouri City TX
Alan Burkhard - Houston TX

M I LLC. - Houston TX

B07B 144

209367, 2093654, 209366, 2093665

A vibrating screen separator. The vibrating screen separator may be operated in a linear, an elliptical, or in a transition from elliptical to linear modes of operation. In the linear mode of operation, the screen separator moves along a reciprocating straight line path, and, in the elliptical mode of operation, the screen separator moves along an elliptical path. In the transitionary mode of operation, the screen separator is transitioned from movement along the elliptical path to movement along the linear path.

7478672, Jan 20, 2009

Mar 1, 2006

11/367132

Brian Rogers - Houston TX, US
Alan Burkhard - Houston TX, US

M-I L.L.C. - Houston TX

E21B 47/00

166 53, 166 666, 16625015

An apparatus operable is a hazardous area for controlling a choke assembly includes an air source, an air purge system in fluid communication with the air source, a remote operating panel receiving data from at least one remotely located wellbore sensor, a local operating panel in electronic communication with the remote operating panel, and an actuator coupled to the assembly to control pressure within the wellbore. The remote operating panel includes an airtight housing in fluid communication with the air purge system, wherein air from the air purge system is circulated through the housing, a plurality of operator controls for manually controlling operation of the pressure control assembly, and a display for visually displaying values of data received from the wellbore sensor. The local operating panel includes an airtight panel housing in fluid communication with the air purge system, wherein air from the air purge system is circulated through the panel housing, and a local operator controller having an operator interface for receiving operator instruction input into the local panel, and operable to receive operator instructions from the remote panel and transmit operator instructions. The actuator includes a motor in an explosion-proof housing coupled to the choke plate and operable to adjust the orifice through the choke plate, wherein the motor receives electronic communication of the operator instructions transmitted by the local operator controller, and a position indicator coupled to the choke plate for sensing the orifice opening and providing feedback of the choke plate position to the motor.

7699071, Apr 20, 2010

Dec 19, 2007

11/959970

Alan Wayne Burkhard - Fort Thomas KY, US
Nicolas Christopher Wade Thiessen - Edmonton, CA

M-I L.L.C. - Houston TX

F16K 31/12

137509, 175 38, 175218, 137495

A method of controlling one or more operating pressures within a subterranean borehole that includes a choke assembly is disclosed. The choke assembly may include a housing having an inlet passage, an axial bore, and a chamber, wherein a portion of the axial bore forms an outlet passage, and a choke member adapted for movement in the housing to control the flow of a fluid from the inlet passage to the outlet passage. The method may include applying a closing force to move the choke member toward a closed position, and applying a bias force to the choke member when in the closed position to reduce an overpressure required to initiate movement of the choke member from the closed position.

8141714, Mar 27, 2012

Dec 19, 2007

11/960470

Alan Wayne Burkhard - Fort Thomas KY, US

M-I LLC - Houston TX

B07B 1/42

2093651, 209368

Embodiments relate to a vibratory screen separator and methods for using a vibratory screen separator. The vibratory screen separator may have a stationary base, a movable basket, and at least one linear motor for imparting motion to the movable basket, and methods for using the vibratory screen separator. The linear motor may include a stationary component and a moving component, wherein the moving component is coupled to the movable basket, and wherein the stationary component is coupled to the stationary base. The method may include passing a material including solid particles onto the screen, and moving the basket with at least one linear motor having a movable component coupled to the basket and a stationary component coupled to a base.

8360099, Jan 29, 2013

Mar 7, 2007

11/683317

Alan Wayne Burkhard - Fort Thomas KY, US
Michael Scott Sawyer - Katy TX, US
Roger Lane Suter - Katy TX, US

M-I L.L.C. - Houston TX

F16K 37/00

137557, 251 29, 137206

A failure protection apparatus including an air source providing air having an air pressure, a first valve in fluid communication with the air source permitting a control fluid to flow to a pressure control assembly when the air pressure is at least a minimum pressure and preventing flow of the control fluid to the assembly when the air pressure is below a minimum pressure, the assembly containing control fluid at a predetermined pressure that is maintained when the air pressure is below the minimum pressure, a second valve in communication with the air source permitting communication of air between an inlet and an outlet when the air pressure is below the minimum pressure, a third valve in communication with the air source, a pressure container in communication with the third valve outlet and having an outlet that feeds air to the second valve to actuate a warning device attached thereto.

8418989, Apr 16, 2013

Dec 18, 2007

11/959371

Alan Wayne Burkhard - Fort Thomas KY, US
Nicolas Christopher Wade Thiessen - Edmonton, CA

M-I L.L.C. - Houston TX

F16K 31/02

251 14, 25112903, 137495, 137509

Disclosed are a fluid control system and method of controlling operating pressures within a fluid system, where the fluid control system includes a choke assembly, a pressure generating device, and a linear motor. The choke assembly may include a housing and a choke member adapted for movement in the housing, controlling the flow of a fluid from an inlet passage to an outlet passage. The fluid applies a force on a first end of the choke member. The pressure generating device may be fluidly connected to a chamber and may contain a control fluid that applies a first force on a second end of the choke member. The linear motor may apply a second force on the second end of the choke member. The difference between the forces applied to the first and second ends of the choke member may affect the movement of the choke member in the housing.

20080149182, Jun 26, 2008

Dec 18, 2007

11/959292

Alan Wayne Burkhard - Fort Thomas KY, US
Nicolas Christopher Wade Thiessen - Edmonton, CA

M-I LLC - Houston TX

F17D 3/00

137 12, 137 811

Disclosed are a fluid control system and a method of controlling operating pressures within a fluid system. The fluid control system may include a choke assembly and a linear motor. The choke assembly may have a housing having an inlet passage, an axial bore, and a chamber, wherein a portion of the axial bore forms an outlet passage, and a choke member adapted for movement in the housing to control the flow of a fluid from the inlet passage to the outlet passage. The linear motor may control a position of the choke member in the housing.