| Patent application number | Description | Published |
|---|
| 20090042746 | Water-Based Drilling Fluid - A water based drilling fluid contains as additive one or more alkyl ethoxylates having the formula RO(CH | 02-12-2009 |
| 20090145601 | TECHNIQUE AND APPARATUS TO DEPLOY A CEMENT PLUG IN A WELL - A technique that is usable with a well includes deploying a sensing device on a drill string and communicating with the sensing device during a plug cementing operation over a wired infrastructure of the drill string. The technique includes controlling the plug cementing operation in response to the communication. | 06-11-2009 |
| 20090151939 | SURFACE TAGGING SYSTEM WITH WIRED TUBULARS - Downhole systems and methods including tags configured to provide distinguishable identifiers are set for selective release to a subsurface location. Sources/sensors in the wellbore are activated to detect the tags at a subsurface location, and signal data associated with the detected tags is conveyed to the surface. | 06-18-2009 |
| 20100044034 | SUBSURFACE TAGGING SYSTEM WITH WIRED TUBULARS - Downhole systems and methods including tags configured to provide distinguishable identifiers are set for selective release to a subsurface location. Sources/sensors in the wellbore are activated to detect the tags at a subsurface location, and signal data associated with the detected tags is conveyed to the surface. | 02-25-2010 |
| 20100126252 | RHEOLOGICAL MEASUREMENT OF FILTERCAKE - A rheometer is provided for measuring rheological properties of a filtercake. The rheometer comprises a cell for containing a pressurised fluid supporting a particulate suspension. The cell has two outlets for removing the fluid from the cell. The cell further has a respective foraminous body at each outlet, such that the particulate suspension forms a filtercake on a surface of each foraminous body as pressurised fluid filters through the body when the fluid passes from the cell to the respective outlet. The foraminous bodies are translatable relative to each other, such that the filtercakes formed on said surfaces can be approached to form a unified filtercake. The foraminous bodies are also rotatable relative to each other. The rheometer further comprises a torque sensor for measuring a torque required to rotate the foraminous bodies relative to each other. The measured torque is indicative of one or more rheological properties of the unified filtercake. | 05-27-2010 |
| 20100175924 | APPARATUS AND METHOD FOR IMPROVEMENTS IN WELLBORE DRILLING - The invention relates to a tool for use in wellbore drilling, suitable for use with a drill string for drilling a wellbore having an inner wall, the tool comprising means for generating particles of solid material from the formed inner wall of a drilled wellbore, and means for directing the generated particles to the inner wall of the wellbore and a method of forming a layer of solid particles on the inner wall of a wellbore drilled by such a drill string. | 07-15-2010 |
| 20100193184 | SYSTEM AND METHOD OF MONITORING FLOW IN A WELLBORE - A system and method for releasing a marker within a wellbore is provided. The system and method includes a sensor that detects movement or a position of the marker within the wellbore. The marker may be released in drilling fluid, for example, and may travel from the surface to the drill bit and return to the surface with cuttings. As an example, the markers are used to determine the flow of cuttings within the wellbore. | 08-05-2010 |
