Matches 1 - 25 out of 25


Match Document Document Title
US20090071715 METHOD OF CONTROLLING OPERATION OF ROCK DRILLING RIG, AND ROCK DRILLING RIG  
A method of controlling operation of a rock drilling rig, and a rock drilling rig. A rate of flow of a flushing medium of the rock drilling rig is determined, and the operation of the rock...
US20120273271 MEASUREMENT-WHILE-DRILLING MUD PULSER AND METHOD FOR CONTROLLING SAME  
A measurement-while-drilling mud pulser and a method for controlling a measurement-while-drilling mud pulser. The mud pulser includes a brushless DC motor that hydraulically controls a main...
US20090194331 VACUUM FEED SUPPLY SYSTEM FOR DRILLING FLUID ADDITIVES  
A system for forming a subterranean wellbore may include a pump and an additive supply. The pump pumps a drilling fluid into the wellbore while also generating a pressure differential that draws...
US20130048379 Controlled Full Flow Pressure Pulser for Measurement While Drilling (MWD) Device  
An apparatus, method, and system described for generating pressure pulses in drilling fluid utilizing a flow throttling device which includes a controllable pulser operating sequentially within a...
US20140345942 DIVERTING FLOW IN A DRILLING FLUID CIRCULATION SYSTEM TO REGULATE DRILLING FLUID PRESSURE  
Diverting flow in a drilling fluid circulation system to regulate drilling fluid pressure. A pump of a drilling fluid pressure regulation system for a well bore can discharge drilling fluid...
US20120048620 PRESSURE LIMITING CONTROLLER  
A method of controlling pressure in a mud pump system includes generating a pressure limiting factor output using a pressure feedback input and a motor speed input to calculate a fluid conductance...
US20140262510 CLOSED LOOP DRILLING FLUIDS CIRCULATION AND MANAGEMENT SYSTEM  
A closed loop drilling fluids circulation system includes a first drilling fluid circulation system disposed at a first subterranean drill site. The first drilling fluid circulation system...
US20140048331 MANAGED PRESSURE DRILLING SYSTEM HAVING WELL CONTROL MODE  
A method of drilling a subsea wellbore includes drilling the subsea wellbore and, while drilling the subsea wellbore: measuring a flow rate of the drilling fluid injected into a tubular string;...
US20120145456 Consistent Drilling Fluids Engineering and Management  
Processes and apparatus that continuously change the physical state and characteristics of drilling fluids at planned periodic intervals to consistently and correctly compensate for differing...
US20080142263 Downhole Valve Mechanism  
In one aspect of the invention, a downhole tool string component comprises a fluid passageway formed between a first and second end. A valve mechanism is disposed within the fluid passageway...
US20100006282 ASSEMBLY FOR PRESSURE CONTROL WHEN DRILLING AND METHOD TO CONTROL PRESSURE WHEN DRILLING IN A FORMATION WITH UNPREDICTABLE HIGH FORMATION PRESSURE  
Assembly for pressure control when drilling underground to locate or produce hydrocarbons; whereby the drilling is done by means of a drill string with fluid circulation down through the drill...
US20050092523 Well pressure control system  
The present invention contemplates a choke control system that provides for local and off-site monitoring and control of the annulus flow pressure of a well. The choke control system includes a...
US20140090888 Apparatus, System, and Method for Controlling the Flow of Drilling Fluid in a Wellbore  
A drilling system includes a drill string extending through a BOP and a drilling fluid discharge coupling mounted to the BOP. In addition, the drilling system includes a drilling fluid control...
US20070227774 Method for Controlling Fluid Pressure in a Borehole Using a Dynamic Annular Pressure Control System  
A method for controlling formation pressure during the drilling of a borehole through a subterranean formation includes selectively pumping a drilling fluid through a drill string extended into a...
US20140345943 AUTOMATIC DRILL FLUID MEASUREMENT APPARATUS  
The present invention is directed to an automatic drill fluid measurement apparatus. More specifically, the present invention is directed to an apparatus which may automatically measure a weight...
US20140374157 CLEAN OUT SUB  
A clean out sub for use in a drill string having a tool body with a cavity for passage of drilling fluid and annular fluid circulation ports extending through the tool body, a valve spool is...
US20150060140 Eccentric Steering Device and Methods of Directional Drilling  
The present invention recites a method, system and apparatus for steering a drill string, wherein an eccentric steering device is recited. The eccentric steering device may comprise an eccentric...
US20100126770 Non-Azimuthal and Azimuthal Formation Evaluation Measurement in a Slowly Rotating Housing  
A steering tool configured for making azimuthal and non-azimuthal formation evaluation measurements is disclosed. In one embodiment a rotary steerable tool includes at least one formation...
US20170167246 FLUID LOSS SENSOR  
A system and method for estimating a fluid loss in a borehole while drilling are disclosed. A drill string disposed in the borehole. A first sensor of the drill string is configured to obtain a...
US20170114600 WELL DRILLING APPARATUS AND METHOD OF USE  
Embodiments provide a well-drilling apparatus and a method of use.
US20160376858 DRILLING FLUID PROCESSING SYSTEM AND ASSOCIATED METHODS  
A processing system for separating solids from used drilling fluids to produce cleaned drilling fluids includes a cleaned drilling fluid tank and a filtering unit having an inlet container and a...
US20160362951 ASSESSMENT AND CONTROL OF DRILLING FLUID CONDITIONING SYSTEM  
A drilling fluid conditioning system can include at least one drilling fluid conditioning device, and at least one heat transfer property sensor that outputs real time measurements of a heat...
US20160145992 Continuous Downlinking While Drilling  
A method for continuous downlinking from a surface location to a bottom hole assembly includes using a bottom hole assembly to drill a subterranean wellbore. A drilling value is acquired at a...
US20160017676 METHOD AND SYSTEM FOR IDENTIFYING A SELF-SUSTAINED INFLUX OF FORMATION FLUIDS INTO A WELLBORE  
A method of identifying a self-sustained influx of formation fluids into a wellbore includes the steps of closing an annular shut-off device and diverting an annular return flow from the wellbore...
US20150337606 SYSTEM AND METHOD FOR CONTROLLED SLIP CONNECTION  
A controlled slip connection system is configured to be coupled between a drill pipe and a directional drilling assembly, and the slip connection system is configured to enable continual rotation...

Matches 1 - 25 out of 25