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2233results about "Underwater drilling" patented technology
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Internal riser rotating control head
A holding member provides for releasably positioning a rotating control head assembly in a subsea housing. The holding member engages an internal formation in the subsea housing to resist movement of the rotating control head assembly relative to the subsea housing. The rotating control head assembly is sealed with the subsea housing when the holding member engages the internal formation. An extendible portion of the holding member assembly extrudes an elastomer between an upper portion and a lower portion of the internal housing to seal the rotating control head assembly with the subsea housing. Pressure relief mechanisms release excess pressure in the subsea housing and a pressure compensation mechanism pressurize bearings in the bearing assembly at a predetermined pressure.
Owner:WEATHERFORD TECH HLDG LLC
Drilling system and method for controlling equivalent circulating density during drilling of wellbores
A drilling system for drilling subsea wellbores includes a tubing-conveyed drill bit that passes through a subsea wellhead. Surface supplied drilling fluid flows through the tubing, discharges at the drill bit, returns to the wellhead through a wellbore annulus, and flows to the surface via a riser extending from the wellhead. A flow restriction device positioned in the riser restricts the flow of the returning fluid while an active fluid device controllably discharges fluid from a location below to just above the flow restriction device in the riser, thereby controlling bottomhole pressure and equivalent circulating density (“ECD”). Alternatively, the fluid is discharged into a separate return line thereby providing dual gradient drilling while controlling bottomhole pressure and ECD. A controller controls the energy and thus the speed of the pump in response to downhole measurement(s) to maintain the ECD at a predetermined value or within a predetermined range.
Owner:BAKER HUGHES INC
Latch position indicator system and method
Latch position indicator systems remotely determine whether a latch assembly is latched or unlatched. The latch assembly may be a single latch assembly or a dual latch assembly. An oilfield device may be positioned with the latch assembly. Non-contact (position), contact (on / off and / or position) and hydraulic (flowmeter), both direct and indirect, embodiments include fluid measurement systems, an electrical switch system, a mechanical valve system, and proximity sensor systems.
Owner:WEATHERFORD TECH HLDG LLC
Managed pressure and/or temperature drilling system and method
The present invention relates to a managed pressure and / or temperature drilling system (300) and method. In one embodiment, a method for drilling a wellbore into a gas hydrates formation is disclosed. The method includes drilling the wellbore into the gas hydrates formation; returning gas hydrates cuttings to a surface of the wellbore and / or a drilling rig while controlling a temperature and / or a pressure of the cuttings to prevent or control disassociation of the hydrates cuttings.
Owner:WEATHERFORD TECH HLDG LLC
Managed pressure cementing
A method of cementing a tubular string in a wellbore includes: deploying the tubular string into the wellbore; pumping cement slurry into the tubular string; launching a cementing plug after pumping the cement slurry; propelling the cementing plug through the tubular string, thereby pumping the cement slurry through the tubular string and into an annulus formed between the tubular string and the wellbore; and controlling flow of fluid displaced from the wellbore by the cement slurry to control pressure of the annulus.
Owner:WEATHERFORD TECH HLDG LLC
Multi-activity offshore exploration and/or development drilling method and apparatus
Owner:TRANSOCEAN OFFSHORE DEEPWATER DRILLING
Subsea accumulator and method of operation of same
An accumulator for use in deepwater operational and control systems which uses a differential between a high pressure ambient pressure source such as sea water pressure and a low pressure source such as a chamber holding vacuum or atmospheric pressure to provide storage and delivery of hydraulic power for operation of equipment.
Owner:BAUGH BENTON F
Method and apparatus for replacing BOP with gate valve
Owner:WORLDWIDE OILFIELD MACHINE INC
Method and system for return of drilling fluid from a sealed marine riser to a floating drilling rig while drilling
A floating rig or structure for drilling in the floor of an ocean using a rotatable tubular includes a seal housing having a rotatable seal connected above a portion of a marine riser fixed to the floor of the ocean. The seal rotating with the rotating tubular allows the riser and seal housing to maintain a predetermined pressure in the system that is desirable in underbalanced drilling, gas-liquid mud systems and pressurized mud handling systems. The seal is contemplated to be either an active seal or a passive seal. A flexible conduit or hose is used to compensate for relative movement of the seal housing and the floating structure because the floating structure moves independent of the seal housing. A method for use of the system is also disclosed.
Owner:WEATHERFORD TECH HLDG LLC
Riser rotating control device
Owner:WEATHERFORD TECH HLDG LLC
Subsea gas separation system and method for offshore drilling
A subsea gas separation system use in drilling an offshore well includes a subsea blowout preventor connected to the well and a gas separator connected to the blowout preventor near the seafloor. Gas released into the well bore during a well control event is removed at the separator and not returned with the drilling mud recirculated to the surface. A method offshore drilling includes a mud circulation circuit established leading down the drill string, through the drill bit, up the borehole, through a subsea pump, and to the surface through a return riser. The subsea pump is protected during critical well control events by removing gas released into the mud at a gas separator located upstream of the subsea pump and in communication with the blowout preventor.
Owner:SHELL OFFSHORE
Monitoring the health of a blowout preventer
InactiveUS20120197527A1Electric/magnetic detection for well-loggingFluid removalTraffic signalDisplay device
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 (GUI) displays the health of various sealing elements and control systems by way of “traffic light” indicators. The health indicators are evaluated, by the monitoring system, based on a risk profile for each of the indicated elements and control systems. The risk profiles are evaluated based on inputs such as measurement inputs, feedback signals, mechanical positions, diagnostic results, drilling conditions, and other status information of the blowout preventer at a given time and based on levels of redundancy and levels of deviation from normal conditions. The GUI includes recent history of changes in operating condition, and alarm indications such as poor health, along with the times of those events.
Owner:BP CORP NORTH AMERICA INC
Drilling Fluid Additive for Reducing Lost Circulation in a Drilling Operation
ActiveUS20100193244A1Improve performanceReducing and controlling lost circulationDrilling rodsDerricks/mastsWaxWell drilling
Generally, the present invention provides drilling fluid additives for reducing or controlling lost circulation in a drilling operation. The additives comprises particles. The particles comprise one or more solids in association a wax or waxy substance. A drilling fluid comprising a drilling fluid additive of the invention is also provided, as well as a method and use of the drilling fluid additive in a drilling operation to reduce or control lost circulation. Methods for manufacturing the drilling fluid additives are also described.
Owner:CANADIAN ENERGY SERVICES LP
Subsea production system
InactiveUS7093661B2Increase supplyEasy to controlCleaning apparatusSettling tanks feed/dischargePetroleum productPigging
Methods and arrangements for production of petroleum products from a subsea well. The methods comprise control of a downhole separator, supplying power fluid to a downhole turbine / pump hydraulic converter, performing pigging of a subsea manifold, providing gas lift and performing three phase downhole separation. Arrangement for performing the methods are also described.
Owner:AKER SUBSEA LTD
Wireless reservoir production control
A reservoir production control system includes a plurality of wells for producing a reservoir linked to a central computer over a downhole communication network and a surface communication network. Both the downhole and the surface communication networks are wireless communications paths for transmitting downhole data and surface data to the central computer. Both networks include a series of interconnected tubing or pipe that allows transmission of data over electrically isolated portions of the pipe and tubing. After integrating and analyzing all relevant data and comparing the data with a reservoir model, the central computer initiates changes in a plurality of downhole control devices associated with the wells, thereby optimizing the production of the reservoir.
Owner:SHELL OIL CO
Rotating control device docking station
Owner:WEATHERFORD TECH HLDG LLC
Subsea Internal Riser Rotating Control Device System and Method
An RCD is used to provide a system and method for sealing a marine riser having a rotatable tubular. A bypass internal channel or external line may be used to allow fluid to bypass the RCD seal. An RCD seal assembly seal could be a mechanically extrudable seal or a hydraulically expanded seal to seal the RCD with the riser.
Owner:WEATHERFORD TECH HLDG LLC
Rotating control device apparatus and method
Owner:SMITH INT INC
Instrumented Tabular Device for Transporting a Pressurized Fluid
InactiveUS20070284112A1Low insertion lossDrilling rodsForce measurement by measuring optical property variationGratingEngineering
The invention relates to an instrumented tubular device for transporting a pressurized fluid notably in the field of oil exploration and in that of the transport of gas or hydrocarbons. This device comprises a tube (20) in which this fluid flows, with which are associated means for measuring the main deformations of this tube, and means for measuring the temperature of the fluid in the tube. This tube is equipped with measurement means integral with its surface and offset by at least one remote optical cable towards an electronic measurement system. These measurement means are means for assembling at least two non-parallel optical fibers which comprise at least three assemblies (B1, B2, B3) of at least two optical gages with Bragg gratings attached to at least three measurement locations (22) and connected to the remote optical cable (23) via optical fibers. At least one assembly further comprises a temperature gage.
Owner:COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Method for pressurized mud cap and reverse circulation drilling from a floating drilling rig using a sealed marine riser
A method for drilling in the floor of an ocean from a floating structure using a rotatable tubular includes a seal housing having a rotatable seal connected above a portion of a marine riser fixed to the floor of the ocean. The seal rotating with the rotating tubular allows the riser and seal housing to maintain a predetermined pressure in the system that is desirable in pressurized mud cap and reverse circulation drilling. A flexible conduit or hose is used to compensate for relative movement of the seal housing and the floating structure because the floating structure moves independent of the seal housing. The drilling fluid is pumped from the floating structure into an annulus of the riser, allowing the formation of a mud cap downhole in the riser, or allowing reverse circulation of the drilling fluid down the riser, returning up the rotatable tubular to the floating structure.
Owner:WEATHERFORD TECH HLDG LLC
Inflow control device
An inflow control device is disclosed for use in controlling the flow of fluid into a production tubing in a subterranean wellbore. The device is especially adapted for use with sand screen apparatus, but is modular in that it is manufactured separately from the sand screen apparatus. An inflow control device according to the present invention contains an orifice having an opening which is adjustable in size and which is disposed in the device to permit communication of fluid from one end of the body to the other. An inflow control device according to the present invention may be utilized with multiple sand screen assemblies.
Owner:SCHLUMBERGER TECH CORP
Method for pressurized mud cap and reverse circulation drilling from a floating drilling rig using a sealed marine riser
Owner:WEATHERFORD TECH HLDG LLC
Riser rotating control device
ActiveUS20060108119A1Quick unlockLimit downhole movementSurveyConstructionsTransducerRotation control
A latch assembly is connectable to a riser. A rotating control device can be positioned with the riser, sealing the rotating control device with the latch assembly and removably latching the rotating control device to the latch assembly and to the riser. The latch assembly can be remotely actuated. The latch assembly can provide an auxiliary safety mechanism to provide a backup actuation mechanism to unlatch the rotating control device from the latch assembly. The latch assembly can be bolted to the riser. Alternately, the latch assembly can be latched with the riser using a similar latching mechanism as used to latch the latch assembly to the rotating control device. A pressure transducer protector assembly can protect a transducer for monitoring wellbore pressure in the riser. A remote indicator panel can indicate the status of the latch assembly.
Owner:WEATHERFORD TECH HLDG LLC
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 housing mounted on a marine riser or bell nipple. This docking station housing may be positioned above the surface of the water. When a removable rotating control device is remotely hydraulically latched with the docking station housing, the system and method allows for interactive lubrication and cooling of the rotating control device, as needed, along with a supply of fluid for use with active seals.
Owner:WEATHERFORD TECH HLDG LLC
Subsea intervention system, method and components thereof
The subsea intervention system (SIM) includes a BOP module 10 and CT module 20. A tool positioning system 76 is used for positioning a selected subsea tool 22 stored within a rack 18 with a tool axis in line with the BOP axis, while a marinized coiled string injector 80 is moved by positioning system 81 to an inactive position. Power to the subsea electric motors 162 is supplied by an electrical line umbilical extending from the surface for powering the pumps 164, with the hydraulic system controlled by power control unit 198. The injector 80 preferably includes a pressure compensator roller bearing 220 and a pressure compensated drive system case 254.
Owner:VARCO I P INC
Riser lifecycle management system, program product, and related methods
ActiveUS20080128138A1Easy for daily maintenanceTechnology managementSensing record carriersData warehouseSystem configuration
Owner:HYDRIL USA DISTRIBUTION LLC
Phase Estimation From Rotating Sensors To Get a Toolface
Measurements made by a rotating sensor on a bottomhole assembly are used to determine the toolface angle of the BHA. The method includes using a phase locked loop (PLL) to determine a phase difference between the sensor output and a reference signal.
Owner:BAKER HUGHES INC
High pressure system
Owner:ENHANCED DRILLING
Subsea pumping system and method for deepwater drilling
A method is disclosed for offshore drilling in which a bit is driven at a far end of a drill string, drilling fluid is injected into the drill string from surface drilling facilities, and drilling fluid passes through the far end of the drill string and flushes the borehole at the bit and entrains cuttings into the drilling fluid which circulates up the casing / drill string annulus. The drilling fluid drawn off near the mudline and is treated through a subsea primary processing stage to removing the cuttings from the drilling fluid. The treated drilling fluid is then returned to the surface with a subsea return pump system and passes to surface drilling facilities for injection and recirculation.
Owner:SHELL OFFSHORE
Subsea chemical injection unit for additive injection and monitoring system for oilfield operations
InactiveUS7234524B2Reduce and prevent such buildupPromote of formationDrilling rodsCleaning apparatusOcean bottomMonitoring system
A system monitors and controls the injection of additives into formation fluids recovered through a subsea well. The system includes a chemical injection unit and a controller positioned at a remote subsea location. The injection unit uses a pump to supply one or more selected additives from a subsea and / or remote supply unit. The controller operates the pump to control the additive flow rate based on signals provided by sensors measuring a parameter of interest. A one mode system includes a surface facility for supporting the subsea chemical injection and monitoring activities. In one embodiment, the surface facility is an offshore rig that provides power and has a chemical supply that provides additives to one or more injection units. In another embodiment, the surface facility includes a relatively stationary buoy and a mobile service vessel. When needed, the service vessel transfers additives to the chemical injection units via the buoy.
Owner:BAKER HUGHES INC
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