Matches 1 - 50 out of 85 1 2 >
Match Document Document Title
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...
7546876 Method and apparatus for jet-fluid abrasive cutting  
A method and apparatus for down hole abrasive jet-fluid cutting, the apparatus includes a jet-fluid nozzle and a high pressure pump capable of delivering a high-pressure abrasive fluid mixture to...
7539548 Smart-control PLC based touch screen driven remote control panel for BOP control unit  
The present invention relates to a device for controlling the Blow out preventer (BOP) used in well drilling operations comprising: BOP control unit, master control panel connected to the BOP unit...
7500529 Method and apparatus for predicting and controlling secondary kicks while dealing with a primary kick experienced when drilling an oil and gas well  
A method and apparatus for predicting and controlling secondary kicks, while dealing with a primary kick experienced when drilling an oil and gas well. The method includes a step of determining...
7464770 Closed-loop control of hydraulic pressure in a downhole steering tool  
Aspects of this invention include a steering tool having a controller configured to provide closed-loop control of hydraulic fluid pressure. In one exemplary embodiment, closed-loop control of a...
7407019 Method of dynamically controlling open hole pressure in a wellbore using wellhead pressure control  
A method of dynamically controlling open hole pressure within a wellbore having a drill string positioned therein. The method comprising the steps of pumping a fluid down the drill string, into an...
7395877 Apparatus and method to reduce fluid pressure in a wellbore  
The present invention generally provides apparatus and methods for reducing the pressure of a circulating fluid in a wellbore. In one aspect of the invention an ECD (equivalent circulation density)...
7264058 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...
7172037 Real-time drilling optimization based on MWD dynamic measurements  
A drilling control system provides, in one aspect, advisory actions for optimal drilling. Such a system or model utilizes downhole dynamics data and surface drilling parameters, to produce drilling...
7114576 Method and arrangement of controlling of percussive drilling based on the stress level determined from the measured feed rate  
The rock drill apparatus ( 1 ) comprises a rock drill machine ( 6 ) provided with a percussion device ( 4 ), a feed device ( 9 ) and a tool ( 7 ), the tool ( 7 ) end comprising a bit ( 8 ) for...
7111692 Apparatus and method to reduce fluid pressure in a wellbore  
The present invention generally provides apparatus and methods for reducing the pressure of a circulating fluid in a wellbore. In one aspect of the invention an ECD (equivalent circulation density)...
7103521 Method and device for neutralizing, by controlled gas injection, the formation of liquid slugs at the foot of a riser connected to a multiphase fluid transport pipe  
Method and device for neutralizing, by controlled gas injection, the formation of liquid slugs at the foot of a pipe portion greatly inclined to the horizontal or riser connected to a pipe carrying...
7096975 Modular design for downhole ECD-management devices and related methods  
One or more components of a wellbore drilling assembly utilize a modular construction to facilitate assembly, disassembly, repair and/or maintenance of a wellbore drilling assembly and/or to extend...
7090033 Drill string shutoff valve  
A valve assembly connects into a drill string for opening and closing at least one inner passage within the drill string of the drill string. The valve assembly includes an annular valve assembly...
7055627 Wellbore fluid circulation system and method  
The present invention provides drilling systems for drilling wellbores. The drilling system includes an umbilical that passes through a wellhead and carries a drill bit. A drilling fluid system...
6987463 Method for collecting geological data from a well bore using casing mounted sensors  
A casing sensor and methods for sensing using a casing sensor are disclosed. The casing sensor includes a casing shoe and a sensor coupled to the casing shoe. A casing data relay includes a...
6968911 Apparatus and methods for drilling  
A drilling method in which a rotary drill bit is mounted on a tubular drillstring extending through a bore comprises: drilling through a formation containing fluid at a predetermined pressure;...
6920942 Method and apparatus for directly controlling pressure and position associated with an adjustable choke apparatus  
A hybrid choke control system wherein the traditional choke experience is manifest in auditory and visual feedback mechanisms which are emulated by a digital control system enabling direct control...
6868920 Methods and systems for averting or mitigating undesirable drilling events  
A method and system for averting or mitigating undesirable drilling events during a drilling process is disclosed. The state of the drilling rig is detected, preferably automatically, based on...
6854532 Subsea wellbore drilling system for reducing bottom hole pressure  
The present invention provides drilling systems for drilling subsea wellbores. The drilling system includes a tubing that passes through a sea bottom wellhead and carries a drill bit. A drilling...
6755261 Method and system for controlling well fluid circulation rate  
Methods and systems are provided for varying fluid pressure in a circulation system while circulating a kick out of a well bore 30 drilled through a subterranean formation using a drilling rig ...
6747570 Method for preventing fracturing of a formation proximal to a casing shoe of well bore during drilling operations  
A casing sensor and methods for sensing using a casing sensor are disclosed. The casing sensor includes a casing shoe and a sensor coupled to the casing shoe. A casing data relay includes a...
6668943 Method and apparatus for controlling pressure and detecting well control problems during drilling of an offshore well using a gas-lifted riser  
A method and apparatus for controlling the riser base pressure and detecting well control problems, such as kicks or lost circulation, during drilling of an offshore well using a gas-lifted riser....
6637522 Enhanced computer control of in-situ drilling system  
An apparatus and method is provided for substantially continuously drilling and disposing of drill cuttings and dust to minimize airborne contamination while providing protection against overload...
6575244 System for controlling the operating pressures within a subterranean borehole  
A borehole includes a tubular member, a sealing member for sealing an annulus between the tubular member and the borehole, a pump for pumping fluidic materials into the tubular member, and an...
6527062 Well drilling method and system  
Methods and systems are provided for drilling a well bore 60 through a subterranean formation using a drilling rig 25 and a drill string 50, whereby the bottom hole pressure while circulating...
6484816 Method and system for controlling well bore pressure  
Methods and systems are provided for maintaining fluid pressure control of a well bore 30 drilled through a subterranean formation using a drilling rig 25 and a drill string 50, whereby a...
6474422 Method for controlling a well in a subsea mudlift drilling system  
A method for controlling a subsea well that includes shutting at least one blowout preventer, opening at least one isolation line, and circulating an influx out of a well while an inlet pressure of...
6394195 Methods for the dynamic shut-in of a subsea mudlift drilling system  
A method for a dynamic shut-in of a subsea mudlift drilling system. The method comprises detecting a kick, isolating a wellbore, and adjusting a subsea mudlift pump and a surface mud pump to...
6352129 Drilling system  
A drilling system for drilling a borehole into an earth formation is provided. The drilling system comprises a drill string extending into the borehole whereby an annular space is formed between...
6289998 Downhole tool including pressure intensifier for drilling wellbores  
A drilling system utilizing the drilling fluid in a borehole to drive an apparatus to generate a high-pressure jet of fluid to facilitate the drilling operation. A pressure intensifier disposed...
6209661 Method and arrangement for controlling feed in rock drilling  
A method and an arrangement for controlling the feed of a rock drill. In the method, the pressure in a pressure conduit (7a) of a pressure-fluid-operated feed motor (6) is measured, and when the...
6102138 Pressure-modulation valve assembly  
A drillstring pressure-modulation valve which is usable in combination with a downhole drilling motor and a drillstring thruster to compensate for changes in pressure drop through the drilling...
5873420 Air and mud control system for underbalanced drilling  
A method and apparatus for drilling a well is set forth. In one aspect, a typical drill stem is assembled from a set of drill pipe and delivers a flow of drilling mud to the drill bit. A smaller...
5443128 Device for remote actuating equipment comprising delay means  
The present invention relates to a device for remote actuating an equipment through a variation of the flow of a fluid in a pipe. The device includes an adjusting throttle (2, 3; 52, 51) adapted...
5437308 Device for remotely actuating equipment comprising a bean-needle system  
A device for remotely actuating a piece of equipment by varying the flow conditions of a fluid, possibly incompressible, an comprising an actuating piston, a nozzle-needle assembly. One of the...
5303582 Pressure-transient testing while drilling  
A well testing method and apparatus for reservoir characterization during a drilling operation by making use of conventional drilling facilities. The tests can be performed at various degrees of...
4930586 Hydraulic drilling apparatus and method  
Hydraulic drilling method and apparatus in which the drilling fluid itself is utilized to control the direction in which a hole is bored in the earth. The orientation of the drill head is monitored...
4924949 Drill pipes and casings utilizing multi-conduit tubulars  
A multi-conduit tubular having fluid conduits (30) and electrical conduits (108), with associated surface fluid (182) and electrical (186) commutators, and downhole sensors (18, 20, 290) for...
4788467 Downhole oil well vibrating system  
A transducer assembly includes a piezoelectric transducer and a support member encasing the transducer. The transducer and the support member may have commonly disposed openings. The support member...
4700739 Pneumatic well casing pressure regulating system  
A pneumatic pressure regulating system controls a choke having a hydraulic operator actuator for selectively opening or closing the choke to control pressure in a well casing. The system applies...
4653597 Method for circulating and maintaining drilling mud in a wellbore  
A method for circulating and maintaining a drilling mud in a wellbore drilled into a subterranean formation at a desired pressure during drilling operations, said method consisting essentially of; ...
4630675 Drilling choke pressure limiting control system  
A pneumatic system is used for controlling the position of a hydraulically-actuated drilling choke to limit the maximum pressure in the casing of an oil well. Pressure in the casing is used...
4577614 Advanced quick ball release sub  
A quick-ball release blowout preventer apparatus is mounted above a kelly for preventing oil and gas blowouts. A longitudinally bored subassembly is provided with at least one transverse bore...
4458766 Hydrojet drilling means  
Hydrojet drilling means and method are presented. The method varies the angle and direction from which fluid contacts the material to be cut. The variation in angle and direction also causes the...
4403664 Earth boring machine and method  
An earth boring machine and method are disclosed. An above-ground reference line, such as a laser beam, is established for a hole to be bored. The direction of the reference line is detected. The...
4337653 Blowout preventer control and recorder system  
A control and recorder system for a blowout preventer for providing a record of operation and status of the various components of the blowout control system at periodic times and after a function...
4291772 Drilling fluid bypass for marine riser  
Method and apparatus are described to reduce the tension required on a riser pipe used in offshore drilling between a floating vessel and a subsea wellhead. Heavy drilling fluid is circulated down...
4253530 Method and system for circulating a gas bubble from a well  
A gas bubble is circulated from a well by a system that maintains the well and bottom hole pressure substantially constant by progressively increasing the casing pressure as needed to maintain the...
Matches 1 - 50 out of 85 1 2 >