Matches 51 - 100 out of 219 < 1 2 3 4 5 >
Match Document Document Title
6142236 Method for drilling and completing a subsea well using small diameter riser  
A subsea wellhead assembly located at the sea floor that includes a subsea wellhead and a stationary blowout preventer mounted to the subsea wellhead for controlling a well during drilling. A drill...
6142234 Apparatus and method for tieback of subsea wells  
Apparatus and method are provided for applying a force to a movable subsea member to move it into a preferred location for joining to a fixed member while the location of the movable member is...
6138762 Wellhead connector with additional load shoulders  
A subsea wellhead connector has an upper body that abuts the rim of a wellhead member. A hydraulic wellhead connector is carried by the upper body and extends over the wellhead member. The...
6129151 Apparatus for use in the completion of subsea wells  
Apparatus for use in the completion and workover of a subsea well adapted for coil tubing intervention comprises a surface tree having an upper end on which a coil tubing injection unit may be...
6102125 Coiled tubing workover riser  
An apparatus for performing workover operations on a subsea well that has a subsea production tree with a production passage and an annulus access passageway. The subsea production tree is secured...
6070668 Blowout preventer spanner joint with emergency disconnect capability  
A spanner joint assembly for connecting between an upper riser and a conventional dual bore tubing hanger in a subsea well. The spanner joint assembly includes upper and lower spanner joint...
6045296 Tension ring for riser  
A tensioning device is provided for applying tension to a riser from a surface deck of an offshore oil or gas well. The tensioning device is used with a riser of the type having threads formed on...
6017168 Fluid assist bearing for telescopic joint of a RISER system  
An undersea telescopic joint for a riser system is connected to a drilling vessel with a plurality of tensioners. The joint has a bearing with inner and outer annular mating members. A cap seals...
5984584 Fairings for drilling riser control pod hoses  
A fairing system is disclosed for protecting multiple, parallel, bundled but separate cylindrical elements deployed in offshore applications. The fairing system deploys a plurality of elongated...
5931602 Device for oil production at great depths at sea  
In a device for oil production at great depths at sea, production/drilling equipment is provided on a floating structure (2) at the surface of the sea, such as a platform structure or a vessel...
5927902 Device for suspending flexible and semi-flexible pipes on structures at sea  
A device for connection or suspension between a detachable flexible or semi-flexible riser pipe (4) and a pipe system (14) on a fixed or floating platform or ship (15) has a rotary connection which...
5904445 Umbilical line stand-off assembly for marine riser assembly  
A stand-off assembly to attach to a cylindrical support member. The stand-off assembly includes a first component having a first arcuate portion adapted to conform to an outer surface of the...
5881815 Drilling, production, test, and oil storage caisson  
A drilling, production, test, and oil storage caisson for use in deep water offshore well operations. Separate low pressure and high pressure drilling risers are independently supported on buoyancy...
5873678 Tension adjustment mechanism employing stepped or serrated ramps for adjusting tension of a tendon from a floating marine platform  
Vertical movement of a floating marine platform is reduced by tendons extending from the platform to anchors on the seabed. A final tension adjustment to equalize the load on all of the tendons is...
5857808 Limited rotation riser connection system  
The connection between a surface terminus for subsea production risers and a surface collection vessel is facilitated by a connection which utilizes slack loop flexible jumper hoses between the...
5846028 Controlled pressure multi-cylinder riser tensioner and method  
A controlled-pressure multi-cylinder riser tensioner has a plurality of preferably six control-cylinder units (1) with proximal ends (2) attached pivotally to a bottom surface of an operational...
5794700 CAM fluid transfer system  
An offshore fluid transfer system (10) is provided, of the type that includes a riser (32) having an upper end (34) connected through a universal joint (36) to a turret (22) on a vessel and having...
5775427 Internally latched subsea wellhead tieback connector  
A subsea wellhead tieback connector operatively used to connect to a marine riser pipe or a well conductor in a manner that that will not unthread or unloosen the joints of the riser pipe being...
5775845 Passive riser tensioner  
A passive riser tensioner apparatus for tensioning riser pipes on floating platforms and tension leg platforms utilizes one or more elongate elastic tensioning elements connected at top and bottom...
5755531 Transfer system for products and utilities  
The present invention relates to a system which makes use of a multiple reel on which groups of flexible lines supported by articulated structures (8, 9) are wound. The groups of flexible lines are...
5730554 Articulated riser protector  
A protective sleeve protects a riser that extends between a subsea wellhead and a floating vessel. The protective sleeve has less resistance to bending than the riser so as to allow the riser to...
5687793 Apparatus for use in lowering a well pipe into alignment with a subsea conduit  
Apparatus is disclosed for use in lowering an object such as a well pipe through a guide tube suspended from the water surface and onto an upstanding subsea conduit beneath the lower end of the...
5676209 Deep water riser assembly  
A deep water riser assembly includes a lower BOP stack positioned adjacent and anchored to the bottom of the ocean and an upper BOP stack attached to the riser at a water level just far enough...
5651640 Complaint platform with parasite mooring through auxiliary vessel  
A parasite mooring system is disclosed for restraining a compliant platform with respect to an auxiliary vessel. The parasite mooring system includes a parasite mooring line, a platform termination...
5647443 Method and device for drilling for oil or gas  
In a method and device for drilling for oil or gas in an underwater bed by means of a drilling rig with a drilling derrick disposed on a floating drilling platform or on an underwater bed, prior to...
5582253 Debris barrier with a downhole tool setting assembly  
An apparatus is disclosed to allow efficient setting and release from a liner packer connected to a liner assembly. The polished bore adjacent the packer is protected from debris since the setting...
5582252 Hydrocarbon transport system  
A system for transporting hydrocarbon fluid produced from an offshore well using an offshore production platform and a hydrocarbon fluid storage space in fluid communication with the offshore well...
5560258 Release mechanism for use with a remote tool  
A release assembly for operating a remote mechanism such as a subsea well connector includes a funnel-shaped body adapted to engage the well connector and a movable arm adapted to engage and...
5553976 Fluid riser between seabed and floating vessel  
An ocean riser assembly for conveying fluids between the seabed and the surface of the sea includes a fluid conveying pipe formed into a helical configuration or into a planar cyclically undulating...
5547314 Offshore system and method for storing and tripping a continuous length of jointed tubular conduit  
A system and method is provided for storing a continuous length of an assembled jointed tubular conduit on an offshore vessel and for conveying the tubular conduit between the deck of the vessel...
5533574 Dual concentric string high pressure riser  
A dual string high pressure riser system is disclosed for use in drilling a deepwater well through a subsea wellhead. An outer riser extends from the surface and sealingly engages the wellhead and...
5522681 Thread seal for segmented nut  
A connector employs a segmented nut and a seal. The connector includes a housing with a bore having a bowl in it. A shaft extends through the bore, the shaft having exterior threads. Segments are...
5439321 Interruptive mobile production system  
The interruptive mobile production (IMP) system comprises a floating semisubmersible structure with equipment and facilities for hydrocarbon production in association with a small tension leg...
5395183 Offshore drilling apparatus  
There is disclosed an apparatus for use in drilling an offshore well wherein the upper end of a riser is intermittently supported from a floating vessel to permit the lower ends of additional pipe...
5363920 Elastomeric passive tensioner for oil well risers  
A passive tensioner is described for accommodating the tensile loading between a floating oil production platform and a riser. The tensioner includes a stack of strut elements, each of which has a...
5259459 Subsea wellhead tieback connector  
A subsea wellhead tieback connector actuated solely by axial motion to achieve connection to and disconnection from the wellhead. The connector includes interconnected inner and outer bodies, a...
5184686 Method for offshore drilling utilizing a two-riser system  
A method for drilling offshore wells in deep water with greater safety and with fewer casing strings, maintaining a maximum diameter wellbore in the early stages of drilling to facilitate casing...
5161620 Subsea production wellhead assembly  
A concentric riser parallel bore subsea well assembly for controlling production from a subsea wellhead to a floating production facility. The invention utilizes a concentric riser and tubing...
5148871 Tension adapter assembly for completion riser  
The improved structure of the present invention is provided to utilize the drilling riser tension ring and rig tensioning to tension a completion riser. A tension sleeve is provide which is secured...
5092711 Diverless installation of riser clamps onto fixed or compliant offshore platforms  
Riser clamps are installed onto fixed or compliant offshore platforms by a diverless technique. Each riser clamp is rigidly or hingedly attached to a heavy tapered wedge. Mating tapered receptacles...
5044826 Method and apparatus for umbilical hydraulic control lines in floating production systems  
A hydraulic control umbilical is disclosed for supporting a plurality of hydraulic control lines along a riser between a surface facility and a subsea completion. The umbilical provides a skin...
4915416 Underwater oil production  
A swivel-less coupling suitable for producing oil from an underwater well through a riser to a floating vessel or for transferring fluids to or from such a vessel is formed of an inner drum and a...
4911243 Method for disconnecting a marine drilling riser assembly  
Disclosed is a method for disconnecting a marine riser assembly from a subsea wellhead when the marine riser assembly contains substantially gas, the marine riser assembly comprising a riser and a...
4909327 Marine riser  
There are disclosed several embodiments of a marine riser having means for disrupting smooth flow of seawater along its length of the riser and thus damping vertical oscillation of the riser when...
4901803 Method and equipment for performing drilling operations and servicing in an underwater well from a floating surface installation  
Apparatus for performing drilling operations and for servicing an underwater well from a surface installation comprises a main string that is removable from the top of the wellhead in a way that is...
4893677 Guidelineless reentry system with retracting rollers  
A guidelineless reentry system for a subsea well uses a downward facing funnel. The well has a mandrel surrounded by a guide frame. A funnel and a mandrel connector are carried by the riser....
4823879 Guidelineless reentry system with nonrotating funnel  
A guidelineless reentry system for a subsea well uses a downward facing funnel. A guide ring is mounted to the guide frame, which in turn is mounted around a mandrel on the well. A funnel and a...
4823878 Guidelineless reentry system with fixed rollers  
A guidelineless reentry system for a subsea well uses a downward facing funnel. The well has a mandrel surrounded by a guide frame. A guide ring is mounted to the guide frame. A funnel and a...
4822212 Subsea template and method for using the same  
Subsea template and method for using the same. A subsea template includes a plurality of gimballed joints for receiving piles therethrough which are anchored in the sea floor. Also included are a...
4819730 Development drilling system  
A floating drilling platform having dual work stations is disclosed for performing deep sea drilling and/or hydrocarbon production operations. The structure of the platform is designed to...
Matches 51 - 100 out of 219 < 1 2 3 4 5 >