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9033064 Method and system for monitoring a well for unwanted formation fluid influx  
A method of monitoring a well for unwanted formation fluid influx is disclosed. Measurements of well outflow are acquired during a period in which drilling operations are performed for the well....
9019118 Automated well control method and apparatus  
A drilling control system monitors and compares drilling and completion operation sensor values and autonomously acts in response to conditions such as a kick or surge. Sensors in various...
9010459 Air compressor system and method of operation  
Air compressor systems, upgrade kits, computer readable medium, and methods for controlling an air compressor for improved performance. The methods may include receiving a working air requirement;...
8967244 System and method for steering in a downhole environment using vibration modulation  
A system is provided for communicating within a borehole using controlled vibrations. A movement mechanism uses mechanical energy provided by a mechanical energy source to enable translational...
8955619 Managed pressure drilling  
Embodiments of the present invention include methods and apparatus for dynamically controlling pressure within a wellbore while forming the wellbore. In one aspect, one or more pressure control...
8950512 Methods and apparatus for reducing stick-slip  
A method and apparatus for estimating the instantaneous rotational speed of a bottom hole assembly at the lower end of a drill string. In one embodiment, a method includes driving the drill string...
8833488 Automatic standpipe pressure control in drilling  
A method of controlling standpipe pressure in a drilling operation can include comparing a measured standpipe pressure to a desired standpipe pressure, and automatically adjusting a choke in...
8783381 Formation testing in managed pressure drilling  
A method of testing an earth formation can include incrementally opening a choke while drilling into the formation is ceased, thereby reducing pressure in a wellbore, and detecting an influx into...
8783342 System and method for using controlled vibrations for borehole communications  
A system and method are provided for producing controlled vibrations within a borehole. In one example, the system includes a movement mechanism and a vibration control mechanism. The movement...
8781743 Monitoring the health of a blowout preventer  
A computerized monitoring system and corresponding method of monitoring the status and health of a blowout preventer. The system includes a graphics display at which a graphical user interface...
8757254 Adjustment of mud circulation when evaluating a formation  
A method for controlling drilling fluid rate in a wellbore is disclosed. A drill string is disposed into the well and connected to a formation testing or sampling tool. Drilling fluid is...
8752647 Mud motor  
This application is directed to a pressure balanced mud motor. The mud motor includes a power section to rotate a passageway housing and propel fluid through a passageway disposed in the...
8739897 Pressure compensation and rotary seal system for measurement while drilling instrumentation  
A pressure compensation system for a wellbore instrument coupled to a drill string includes a shaft rotatably mounted with respect to an instrument housing. A lubrication chamber included in the...
8727037 Well control operational and training aid  
A method and system to aid and/or train well control personnel by measuring the actual hydraulic delay and pressure attenuation of operator choke changes during well control operations or...
8689906 Methods and apparatus for reducing stick-slip  
A method and apparatus for estimating the instantaneous rotational speed of a bottom hole assembly at the lower end of a drill string. In one embodiment, a method includes driving the drill string...
8684109 Drilling method for drilling a subterranean borehole  
A method of drilling a subterranean borehole comprising: a) pumping a drilling fluid down a drillstring (12), the drillstring (12) having a bit (14) at an end thereof,b) rotating the drillstring...
8657034 Method of drilling a subterranean borehole  
A method of drilling a subterranean well bore using a tubular drill string described. One embodiment of the method includes the steps of injecting a drilling fluid into the well bore via the drill...
8629895 Camera-based facial recognition or other single/multiparty presence detection as a method of effecting telecom device alerting  
A camera can be associated with each conference participant endpoint. The camera, either frame or video-based, can monitor and detect one or more of gestures, facial recognition, emotions, and...
8528660 System and method for safe well control operations  
A system and method for safely controlling a well being drilled or that has been drilled into a subterranean formation in which a conventional blow-out preventer operates to close the well bore to...
8490719 Method and apparatus for controlling bottom hole pressure in a subterranean formation during rig pump operation  
A method for maintaining pressure in a wellbore during drilling operations includes the steps of providing fluid from a reservoir through a drill string, circulating the fluid from the drill...
8453760 Method and apparatus for controlling bottomhole temperature in deviated wells  
An apparatus and method for reducing temperature along a bottomhole assembly during a drilling operation is provided. In one aspect the bottomhole temperature may be reduced by drilling a borehole...
8448720 Optimized pressure drilling with continuous tubing drill string  
A method of drilling a wellbore can include drilling the wellbore with a continuous tubing drill string, and sensing at least one parameter with an optical waveguide in the drill string. A well...
8378842 Downhole component with an electrical device in a blind-hole  
A downhole tool string component has a through-bore intermediate first and second tool joints adapted for connection to adjacent tool string components. A blind-hole is formed in an outer surface...
8360170 Method of drilling a subterranean borehole  
A method of drilling a subterranean well bore using a tubular drill string is described. One embodiment of the method includes the steps of injecting a drilling fluid into the well bore via the...
8347983 Drilling with a high pressure rotating control device  
A Drill-To-The-Limit (DTTL) drilling method variant to Managed Pressured Drilling (MPD) applies constant surface backpressure, whether the mud is circulating (choke valve open) or not (choke valve...
8322439 Arrangement and method for regulating bottom hole pressures when drilling deepwater offshore wells  
An arrangement and a method to control and regulate the bottom hole pressure in a well during subsea drilling at deep waters: The method involves adjustment of a liquid/gas interface level in a...
8281875 Pressure and flow control in drilling operations  
A well drilling system for use with a drilling fluid pump includes a flow control device regulating flow from the pump to a drill string interior; and another flow control device regulating flow...
8267197 Apparatus and methods for controlling bottomhole assembly temperature during a pause in drilling boreholes  
A method for reducing temperature of a bottomhole assembly during a drilling operation is disclosed, that, in one aspect, may include: drilling a borehole using a drillstring including a...
8201628 Wellbore pressure control with segregated fluid columns  
A method of controlling pressure in a wellbore can include placing a barrier substance in the wellbore while a fluid is present in the wellbore, and flowing another fluid into the wellbore while...
8151904 Method for improved well control with a downhole device  
A drilling system includes a downhole well control device that can be used to control out-of-norm wellbore conditions. The downhole well control device can control one or more selected fluid...
8146681 Drilling tool and drilling method  
A drilling tool includes a hydraulically driven device (21) for advancing a drilling head (2) in a bore (5), and a flow limiter (30) arranged in a hydraulic conduit (25) of the advancing device...
8136609 Multiple input scaling autodriller  
A wellbore drilling system includes a weight on bit controller configured to generate a normalized weight on bit output, a drilling torque controller configured to generate a normalized toque on...
8132630 Reverse circulation pressure control method and system  
A system for reverse circulation in a wellbore includes equipment for supplying drilling fluid into the wellbore bit via at least an annulus of the wellbore and returning the drilling fluid to a...
8118114 Closed-loop control of rotary steerable blades  
A steering tool has a controller configured to provide closed-loop control of blade pressure and position. In one embodiment, the controller is configured to execute a directional control...
RE43199 Arrangement and method for regulating bottom hole pressures when drilling deepwater offshore wells  
An arrangement and a method to control and regulate the bottom hole pressure in a well during subsea drilling at deep waters: The method involves adjustment of a liquid/gas interface level in a...
8011450 Active bottomhole pressure control with liner drilling and completion systems  
One exemplary APD Device is used with a liner drilling assembly to control wellbore pressure. The APD Device reduces a dynamic pressure loss associated with the drilling fluid returning via a...
7984770 Method for determining formation integrity and optimum drilling parameters during drilling  
A method for determining formation integrity during drilling of a wellbore includes determining an annulus fluid pressure in a wellbore during drilling thereof. The annulus pressure is adjusted by...
7967081 Closed-loop physical caliper measurements and directional drilling method  
Aspects of this invention include a downhole tool and method for making a physical caliper measurement of a subterranean borehole. The tool is configured to make the physical borehole caliper...
7958948 Method and system for return of drilling fluid  
A system and method is described for use and return of drilling fluid/cuttings from a well, which is drilled on the ocean floor, in connection with offshore related oil production and gas...
7954558 Devices and methods for power control in horizontal directional drilling  
The present disclosure is directed to methods and apparatuses for controlling pump power draw from an engine in horizontal directional drilling. Various embodiments of the invention are directed...
7921936 Method and system for controlling an excavating apparatus  
A method for controlling a drilling apparatus comprising the steps of applying a rotation force to a drilling part of the drilling apparatus, applying a feed force to the drilling part with the...
7836973 Annulus pressure control drilling systems and methods  
In one embodiment, a method for drilling a wellbore includes an act of drilling the wellbore by injecting drilling fluid through a tubular string disposed in the wellbore, the tubular string...
7828081 Method of drilling a lossy formation  
A method of drilling a bore hole in a fractured formation. A drill pipe is deployed into the borehole, whereby an annular space is formed between the drill pipe and the borehole wall. A drilling...
7806203 Active controlled bottomhole pressure system and method with continuous circulation system  
An APD Device provides a pressure differential in a wellbore to control dynamic pressure loss while drilling fluid is continuously circulated in the wellbore. A continuous circulation system...
7789201 Gear unit and method for controlling an internal pressure in the gear unit  
The invention relates to a gear unit, in particular for foundation engineering devices, comprising a gear housing and a pressure device for changing an internal pressure present in the gear...
7775297 Multiple input scaling autodriller  
A wellbore drilling system is disclosed herein, in which the system includes a weight on bit controller configured to generate a normalized weight on bit output, a drilling torque controller...
7775299 Method and apparatus for programmable pressure drilling and programmable gradient drilling, and completion  
A method for creating a programmable pressure zone adjacent a drill bit bottom hole assembly by sealing near a drilling assembly, adjusting the pressure to approximately or slightly below the pore...
7721822 Control systems and methods for real-time downhole pressure management (ECD control)  
Methods and control systems are provided for a wellbore drilling system having an active differential pressure device (APD device) in fluid communication with a returning fluid. The APD Device...
7623961 Method for determining a track of a geographical trajectory  
A method for determining a track of a geographical trajectory which has predetermined start and locations. A data collection device, which has onboard synchronized sensors, is moved between the...
7562723 Method for determining formation fluid entry into or drilling fluid loss from a borehole using a dynamic annular pressure control system  
A method for controlling formation pressure during drilling includes pumping a drilling fluid through a drill string in a borehole, out a drill bit at the end of the drill string into an annular...

Matches 1 - 50 out of 132 1 2 3 >