| Patent application number | Description | Published |
|---|
| 20090050374 | Method and apparatus for managing variable density drilling mud - A method and system for drilling a wellbore is described. The system includes a wellbore with a variable density drilling mud, drilling pipe, a bottom hole assembly disposed in the wellbore and a drilling mud processing unit in fluid communication with the wellbore. The variable density drilling mud has compressible particles and drilling fluid. The bottom hole assembly is coupled to the drilling pipe while the drilling mud processing unit is configured to separate the compressible particles from the variable density drilling mud. The compressible particles in this embodiment may include compressible hollow objects filled with pressurized gas an configured to maintain the mud weight between the fracture pressure gradient and the pore pressure gradient. In addition, the system and method may also manage the use of compressible particles having different characteristics, such as size, during the drilling operations. | 02-26-2009 |
| 20090084604 | COMPRESSIBLE OBJECTS HAVING PARTIAL FOAM INTERIORS COMBINED WITH A DRILLING FLUID TO FORM A VARIABLE DENSITY DRILLING MUD - A compressible object is described that may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The compressible object includes a shell that encloses an interior region. The interior region of the shell is at least partially filled with a foam. The internal pressure of the compressible object may be greater than about 200 psi (pounds per square inch) at atmospheric pressure, greater than 500 psi at atmospheric pressure, greater than 1500 psi at atmospheric pressure or more preferably greater than 2000 psi at atmospheric pressure. | 04-02-2009 |
| 20090090558 | Compressible Objects Having A Predetermined Internal Pressure Combined With A Drilling Fluid To Form A Variable Density Drilling Mud - A compressible object is described that may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The compressible object includes a shell that encloses an interior region. Also, the compressible object has an internal pressure (i) greater than about 200 pounds per square inch at atmospheric pressure and (ii) selected for a predetermined external pressure, wherein external pressures that exceed the internal pressure reduce the volume of the compressible object and wherein the shell being designed to reduce localized strains of the compressible object during expansion and compression of the compressible object. | 04-09-2009 |
| 20090090559 | COMPRESSIBLE OBJECTS COMBINED WITH A DRILLING FLUID TO FORM A VARIABLE DENSITY DRILLING MUD - A compressible object is described that may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The compressible object includes a shell that encloses an interior region. The shell experiences less strain when the external pressure is about equal to the internal pressure than when the external pressure is above or below a predetermined compression interval of the compressible object includes a shell that encloses an interior region. | 04-09-2009 |
| 20090091053 | METHOD FOR FABRICATING COMPRESSIBLE OBJECTS FOR A VARIABLE DENSITY DRILLING MUD - Methods for fabricating compressible object are described. These compressible objects may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The method includes selecting an architecture for a compressible object; selecting a wall material for the compressible object; and fabricating the compressible object, wherein the compressible object has a shell that encloses an interior region, and has an internal pressure (i) greater than about 200 pounds per square inch at atmospheric pressure and (ii) selected for a predetermined external pressure, wherein external pressures that exceed the internal pressure reduce the volume of the compressible object. | 04-09-2009 |
| 20100116553 | Method and Apparatus For Managing Variable Density Drilling Mud - A method and system for drilling a wellbore is described. The system includes a wellbore with a variable density drilling mud, drilling pipe, a bottom hole assembly disposed in the wellbore and a drilling mud processing unit in fluid communication with the wellbore. The variable density drilling mud has compressible particles and drilling fluid. The bottom hole assembly is coupled to the drilling pipe, while the drilling mud processing unit is configured to separate the compressible particles from the variable density drilling mud. The compressible particles in this embodiment may include compressible hollow objects filled with pressurized gas and configured to maintain the mud weight between the fracture pressure gradient and the pore pressure gradient. In addition, the system and method may also manage the use of compressible particles having different characteristics, such as size, during the drilling operations. | 05-13-2010 |
| Patent application number | Description | Published |
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| 20080240932 | Pump, real-time, general and incremental condition diagnosis - A method and system for diagnosing a condition of a positive displacement hydraulic delivery system or pump. The method includes determining a reference polar guide of torque and/or velocity and/or energy profile(s) of the pump from a back electromotive force of a motor driving the pump, determining an angular displacement of an input shaft of the pump, comparing and storing the torque and/or velocity and/or energy profile(s) and the angular displacement of the input shaft in a processor within the motor drive, analyzing the torque and/or velocity and/or energy profile(s), thereby detecting any defect in the pump condition, and identifying a position of the defect based on the angular displacement of the input shaft of the pump. | 10-02-2008 |
| 20090220352 | Method and Device for Monitoring and Controlling a Hydraulic Actuated Process - A method and system for monitoring and controlling a hydraulic pump condition. More specifically, the invention relates to a method and device for monitoring and controlling a hydraulic actuated process indirectly by monitoring and controlling an electric motor driving a positive displacement hydraulic pump. This invention also relates to a precision hydraulic energy delivery system. Direct coupling of the pump to a primary mover (motor) and related motor control allows for complete motion control of a hydraulically driven machine without the use of any downstream devices. By employing motion control algorithms in the motor control, the hydraulic output at the pump head is controlled in a feed forward method. | 09-03-2009 |
| 20100101298 | Dynamic Centering Fixture with Hydraulic Load Delivery Compensation - A dynamic centering apparatus, suitable for centering a workpiece on a work surface, comprising a plurality of hydraulic actuators coupled to individual cells of a hydraulic pump. | 04-29-2010 |
