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US20150247399 SYSTEM AND METHOD FOR DETERMINING DRILLING PARAMETERS BASED ON HYDRAULIC PRESSURE ASSOCIATED WITH A DIRECTIONAL DRILLING SYSTEM  
A system and method for determining drilling parameters based on hydraulic pressure associated with a directional drilling system are disclosed. A drilling parameter associated with a directional...
US20100314169 Wideband Mud Pump Noise Cancelation Method for Wellbore Telemetry  
A method for attenuating pump noise in a wellbore drilling telemetry system includes spectrally analyzing measurements of a parameter related to operation of a pump used to move drilling fluid...
US20090038852 Pumping System  
The invention relates to a pumping system for transporting drilling mud during the driving or sinking of bores. In said system, the pump assembly is interactively connected to the rotary drive...
US20150021094 DUAL MOTOR SYSTEMS AND NON-ROTATING SENSORS FOR USE IN DEVELOPING WELLBORES IN SUBSURFACE FORMATIONS  
A method for forming a subsurface wellbore is disclosed. The method includes operating a drilling string in a first direction of rotation. A first motor located near the end of the drilling string...
US20110303462 ANNULUS PRESSURE SETPOINT CORRECTION USING REAL TIME PRESSURE WHILE DRILLING MEASUREMENTS  
A method of controlling pressure in a wellbore can include determining a real time wellbore pressure PwbRT1 at a pressure sensor in the wellbore, calculating hydrostatic pressure Ph1 at the...
US20090272580 DRILLING SYSTEM WITH DRILL STRING VALVES  
A method to control borehole fluid flow includes detecting a drilling condition and operating at least one valve in the drill string to place an exterior of the drill string in fluid communication...
US20150034386 Fluidic Modulators and Along String Systems  
A well system includes a first fluidic modulator (FM) located at the bottom of the tubular string and a repeater fluidic modulator (FM) located in the tubular string between the first FM and the...
US20110253447 MULTIPLE DISTRIBUTED FORCE MEASUREMENTS  
Methods, computer programs, and systems for detecting at least one downhole condition are disclosed. Forces are measured at a plurality of locations along the drillstring. The drillstring includes...
US20150014058 Drilling System and Method for Monitoring and Displaying Drilling Parameters for a Drilling Operation of a Drilling System  
A drilling system and method for monitoring drilling parameters for an underground drilling operation.
US20130112404 PREEMPTIVE SETPOINT PRESSURE OFFSET FOR FLOW DIVERSION IN DRILLING OPERATIONS  
A method of controlling pressure in a well can include transmitting an instruction to change flow through an annulus formed radially between a drill string and a wellbore, and adjusting a pressure...
US20140131104 SYSTEMS AND METHODS FOR PERFORMING HIGH DENSITY SWEEP ANALYSIS USING MULTIPLE SENSORS  
Multiple sensors in a wellbore can be utilized in a high density sweep analysis. In particular, annular pressures, recorded by the multiple sensors as the sweep is circulated, can be utilized to...
US20110011594 Mud Pulse Telemetry System  
A mud pulser tool to be positioned into a downhole environment is disclosed. The mud pulser tool includes a control valve that is selectively opened to allow fluid to flow through the mud pulser...
US20080066958 Method of directional drilling with steerable drilling motor  
Drilling a bore hole comprises rotary drilling at a first rotation rate until a first target value is substantially met, changing the first rotation rate to a second rotation rate when a trigger...
US20120118638 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...
US20090032304 MUD LEVEL SENSING SYSTEM  
A non-contact measuring system using emitted and received electromagnetic radiation or microwaves is mounted on the return line carrying oil drilling mud and cuttings from an oil drilling...
US20110048802 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...
US20130300568 CONTROL PANEL, AND DIGITAL DISPLAY UNITS AND SENSORS THEREFOR  
According to one aspect, a digital display unit includes a microcontroller to process digital information received from one or more sensors, a display, and a switch in electrical communication...
US20140374160 Installation for Drilling a Well into a Soil and Associated Drilling Method  
An installation (11) for drilling a well (13) into a soil comprising:—a discharge pipe (25) connected to the well (13) for recovering a drilling mud created by the drilling fluid mixing with...
US20100025111 Direct Drive MWD Tool  
The present invention relates to a measurement-while-drilling tool [2] with a mechanically driven poppet [216] which eliminates the flow of drilling fluid through the tool, and reliance on surface...
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...
US20140166364 MONITORING AND CONTROL SYSTEMS FOR CONTINUOUS CIRCULATING DRILLING OPERATIONS  
An apparatus for continuously flowing drilling fluid along a drill string includes a continuous circulation device having at least a first fluid path in fluid communication with a top drive and a...
US20150129306 Method for Calculating and Displaying Optimized Drilling Operating Parameters and for Characterizing Drilling Performance with Respect to Performance Benchmarks  
A method for optimizing drilling includes initializing values of a plurality of drilling operating parameters and drilling response parameters. In a computer, an initial relationship between the...
US20150090498 DRILLING SYSTEM  
Rock strength is estimated during drilling using a rate of penetration model or a modified mechanical specific energy models. The rock strength estimate can be used in conducting further drilling,...
US20080210471 Rotating control device docking station  
A system and method is provided for converting a drilling rig between conventional hydrostatic pressure drilling and managed pressure drilling or underbalanced drilling using a docking station...
US20130311096 Application of engineering principles in measurement of formation gases for the purpose of acquiring more consistent, standardized and authentic gas values for surface logging while drilling  
A new approach to measuring the gases present in the drilling fluid, or “mud”, while drilling oil and gas wells and analyzing the mud at the well surface. The method replaces inconsistent legacy...
US20150114715 EARTH-BORING TOOLS INCLUDING EXPANDABLE MEMBERS AND STATUS INDICATORS AND METHODS OF MAKING AND USING SUCH EARTH-BORING TOOLS  
Expandable tools for use in subterranean boreholes may include a body defining a fluid flow path extending through the body. A valve piston may be located within the fluid flow path of the body,...
US20140131101 SYSTEMS AND METHODS FOR DETERMINING ENHANCED EQUIVALENT CIRCULATING DENSITY AND INTERVAL SOLIDS CONCENTRATION IN A WELL SYSTEM USING MULTIPLE SENSORS  
Multiple sensors on a drill string can be utilized to perform equivalent circulation density (ECD) analysis. By utilizing multiple ones of the sensors, the pressure drop in each section of the...
US20130146359 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....
US20090294174 DOWNHOLE SENSOR SYSTEM  
A method includes sensing a parameter in a well using a sensor disposed on a drillstring, determining a position of the sensor in a wellbore based on a position of the sensor in the drillstring...
US20140251689 FLOW MEASUREMENT AND FLOW SAMPLING SYSTEM  
An apparatus includes a body having a central axis, a fluid inlet coupled to the body, the fluid inlet being adapted to receive a flow of a fluid, and a fluid outlet coupled to the body. The fluid...
US20130299240 DRILLING APPARATUS  
A drilling system including a drill string (12) which extends into a borehole (10), and a well closure system which contains fluid in the annular space (16) in the borehole around the drill...
US20090194330 SYSTEM, PROGRAM PRODUCTS, AND METHODS FOR CONTROLLING DRILLING FLUID PARAMETERS  
Embodiments of systems, program products, and methods for controlling drilling fluid parameters are provided. These embodiments, for example, provide dynamic density control with highly adaptive,...
US20140305705 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 is disclosed. The method includes the steps of providing fluid from a reservoir through a drill string, circulating the...
US20130056273 METHOD OF DRILLING A SUBTERRANEAN BOREHOLE  
A method of drilling a subterranean well bore using a tubular drill string, the method including the steps of injecting a drilling fluid into the well bore via the drill string and removing said...
US20150204322 PUMP SYSTEM HAVING SPEED-BASED CONTROL  
A pump system is disclosed. The pump system may have a power source, a pump, and a torque converter configured to fluidly couple an output rotation of the power source to an input rotation of the...
US20150083494 USE OF DOWNHOLE ISOLATION VALVE TO SENSE ANNULUS PRESSURE  
A method of drilling a wellbore includes deploying a drill string into the wellbore through a casing string disposed in the wellbore. The casing string has a pressure responsive element and a...
US20080236891 HIGH PRESSURE FRACTURE TESTER  
A system for testing a drilling fluid including a vessel having a fluid inlet, a filtrate outlet, a fluid outlet, and at least one permeable media disposed within the vessel. The system further...
US20110042141 Remediation of Relative Permeability Blocking Using Electro-osmosis  
A bottomhole assembly is provided with a cathode. The cathode produces a static field in the earth formation and by the electroosmotic effect, inhibits the invasion of the formation by borehole...
US20120152619 APPARATUS AND METHOD FOR POSITION-SENSITIVE PIPE PROVISIONING IN TOP-DRIVE DRILLING  
The invention relates to a handling device for drill pipes (18) and to a so-called top drive (16) comprising said handling device, a so-called pipe handler, and having means for detecting a...
US20090152006 DUAL STRIPPER RUBBER CARTRIDGE WITH LEAK DETECTION  
A rotating control drilling device includes an upper sealing element and a lower sealing element positioned around a drillstring and forming a chamber therebetween and a leak detection device. The...
US20140110169 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...
US20110168445 Downhole Downlinking System Employing a Differential Pressure Transducer  
A downhole tool includes a downlinking system deployed in a downhole tool body having an internal through bore. The downlinking system includes a differential pressure transducer configured to...
US20110088949 Methods and Apparatus for Characterization of Petroleum Fluids Contaminated with Drilling Mud  
A method and system for characterizing formation fluids contaminated with drilling mud that compensates for the presence of such drilling mud. The operations that characterize formation fluids...
US20090285054 Downhole Telemetry System and Method  
A downhole telemetry system for use in a wellbore including borehole fluid. The system includes a stator including flow channels though the stator and a rotor including flow channels though the...
US20130075158 Methods and Apparatus to Determine Slowness of Drilling Fluid in an Annulus  
Methods and apparatus to determine slowness of drilling fluid in an annulus are described. An example method of determining slowness of drilling fluid in an annulus of a borehole in a formation...
US20130186688 METHODS FOR DETERMINING FORMATION STRENGTH OF A WELLBORE  
A system and a method may determine formation strength of a well. The system and the method may use pressure measurements and temperature measurements to determine controlled fracture pressures...
US20090056820 Controllable pressure-reducing valve and device for the generation of pressure change signals  
The invention is directed to a controllable pressure reducing valve (1) having a housing (2) which includes an inner chamber (3) extending in the direction of a longitudinal axis and having an...
US20070000692 Method of monitoring gas influx into a well bore when drilling an oil and gas well, and apparatus constructed in accordance with the method  
A method of monitoring gas influx into a well bore when drilling an oil and gas well. A first step involves positioning a pressure sensor in a well bore at a lower end of a well casing string. A...
US20090159337 Method for detecting formation pore pressure by detecting pumps-off gas downhole  
A method for the detection of gas invading a wellbore during drilling by the influx of fluids which contain gas from the formations penetrated by a wellbore.
US20110056749 ARRANGEMENT AND A METHOD FOR MONITORING AN AIR FLOW IN A DRILL RIG  
The present invention relates to an arrangement in a rock drill rig 10 comprising an inlet valve 31 arranged up-stream a displacement compressor 32 that is used for supplying an air flow 34 to at...
Matches 1 - 50 out of 109 1 2 3 >