Patent application number | Description | Published |
20080245569 | Apparatus and Methods to Perform Focused Sampling of Reservoir Fluid - Apparatus and methods to perform focused sampling of reservoir fluid are described. An example method couples a sampling probe to a subterranean formation and, while the sampling probe is coupled to the subterranean formation, varies a pumping ratio of at least two displacement units to reduce a contamination level of a formation flu id extracted via the sampling probe from the subterranean formation. | 10-09-2008 |
20090095490 | Electrically activating a jarring tool - A method of using jarring tool in a wellbore, where the jarring tool is electrically activated to apply an impact force transmitted to at least another tool in the well. The method may further comprise operating a hydraulic mechanism in response to electrical activation of the jarring tool to cause a first member of the jarring tool to be moved to collide with a second member of the jarring tool to apply the impact force. Also, the method may involve electrically activating the jarring tool by communicating at least one command over at least one electrical conductor to the jarring tool. | 04-16-2009 |
20090166085 | DOWNHOLE FLUID ANALYSIS - A method that uses downhole fluid analysis in order to selectively collect and retain formation fluid samples in a drilling environment, as well as, control drilling using downhole fluid analysis. | 07-02-2009 |
20090256532 | Kinetic Energy Harvesting in a Drill String - An apparatus and method for harvesting energy in a wellbore is disclosed. In one embodiment, a harvester tool positioned in a wellbore for capturing energy in the wellbore is disclosed. The harvester tool includes a rotor comprising a magnet. The magnet is disposed eccentric to a center of the harvester tool. In addition, the rotor is rotatable around the center of the harvester tool. The harvester tool also includes a stator. Rotation of the rotor induces a voltage in the stator. | 10-15-2009 |
20100170717 | FORMATION EVALUATION WHILE DRILLING - An apparatus comprising a fluid communication device configured to extend from a drill string and establish fluid communication with a subterranean formation penetrated by a wellbore in which the drill string is positioned, wherein the drill string comprises a passage configured to conduct drilling mud and an opening extending through an outer surface thereof and into a cavity. A sample chamber is coupled within the cavity and is in selectable fluid communication with the formation via the fluid communication device. | 07-08-2010 |
20100170718 | FORMATION EVALUATION WHILE DRILLING - An apparatus comprising a fluid communication device configured to extend from a drill string and establish fluid communication with a subterranean formation penetrated by a wellbore in which the drill string is positioned, wherein the drill string comprises a passage configured to conduct drilling mud and an opening extending through an outer surface thereof and into a cavity. A sample chamber is coupled within the cavity and is in selectable fluid communication with the formation via the fluid communication device. A retainer is configured to absorb axial loading of the sample chamber within the cavity. | 07-08-2010 |
20100175925 | PUMP CONTROL FOR FORMATION TESTING - A while-drilling tool comprising a motor, a transmission coupled to the motor, and a pump comprising a first piston disposed in a first chamber and a second piston disposed in a second chamber and coupled to the first piston. A planetary roller-screw is coupled between the pump and the transmission. A valve block is configured to fluidly communicate with the first and second pump chambers, a borehole in which the while-drilling tool is configured to be positioned, and a formation penetrated by the borehole. | 07-15-2010 |
20100326727 | FORMATION EVALUATION WHILE DRILLING - An apparatus comprising a fluid communication device configured to extend from a drill string and establish fluid communication with a subterranean formation penetrated by a wellbore in which the drill string is positioned, wherein the drill string comprises a passage configured to conduct drilling mud and an opening extending through an outer surface thereof and into a cavity. A sample chamber is coupled within the cavity and is in selectable fluid communication with the formation via the fluid communication device. A retainer is configured to absorb lateral loading of the sample chamber within the cavity. | 12-30-2010 |
20110139448 | FORMATION FLUID SAMPLING - A method for formation testing in a wellbore, according to one or more aspects of the present disclosure comprises deploying a formation tester to a position in a wellbore; initiating a first pumpout process to draw formation fluid from a formation at the position into the formation tester; discharging a treatment fluid from the formation tester to the formation at the position; and drawing a formation fluid sample from the formation at the position into the formation tester. | 06-16-2011 |
20110220412 | Formation Evaluation While Drilling - An apparatus comprising a fluid communication device configured to extend from a drill string and establish fluid communication with a subterranean formation penetrated by a wellbore in which the drill string is positioned, wherein the drill string comprises a passage configured to conduct drilling mud and an opening extending through an outer surface thereof and into a cavity. A sample chamber is coupled within the cavity and is in selectable fluid communication with the formation via the fluid communication device. | 09-15-2011 |
20110276187 | PUMP CONTROL FOR FORMATION TESTING - A downhole formation fluid pumping and a sampling apparatus are disclosed that may form part of a formation evaluation while drilling tool or part of a tool pipe string. The operation of the pump is optimized based upon parameters generated from formation pressure test data as well as tool system data thereby ensuring optimum performance of the pump at higher speeds and with greater dependability. New pump designs for fluid sampling apparatuses for use in MWD systems are also disclosed. | 11-10-2011 |
20130092443 | Formation Evaluation While Drilling - In one embodiment, a sampling while drilling tool includes a drill collar having a first end, a second end, an outer wall extending between the first and second ends, and at least one opening extending through the outer wall to a cavity within the drill collar. The sampling while drilling tool also includes a sample chamber positionable in the cavity through the opening in the outer wall and a passage for conducting a drilling fluid through the drill collar. | 04-18-2013 |
20140116783 | Formation Evaluation While Drilling - In one embodiment, a sampling while drilling tool includes a drill collar having a first end, a second end, an outer wall extending between the first and second ends, and at least one opening extending through the outer wall to a cavity within the drill collar. The sampling while drilling tool also includes a sample chamber positionable in the cavity through the opening in the outer wall and a passage for conducting a drilling fluid through the drill collar. | 05-01-2014 |