Matches 151 - 200 out of 219 < 1 2 3 4 5 >
Match Document Document Title
4589801 Composite mooring element for deep water offshore structures  
Lightweight mooring elements for tension leg platforms are formed of a carbon fiber/epoxy matrix material. The mooring elements are preferably in tubular form and include metallic end connectors...
4521135 Pressurized gas filled tendons  
Pressurized gas filled tubular tendons provide a means for detecting leaks therein. Filling the tendon with a gaseous fluid provides increased buoyancy and reduces the weight supported by the...
4498814 Releasable anchor connector for tension leg platform  
A releasable anchor connector for a tension leg platform in which a tether with a bore is locked in a template insert at the seabed by means of a series of locking fingers acting through a ring and...
4491439 Tendon latch  
A latch connects tendons run from a floating platform to a socket in a foundation on the sea floor. The latch includes a latch body having a plurality of dogs disposed within and urgible outward...
4480944 Offshore drilling of large diameter holes in rock formations  
A drilling rig comprises a platform (10) supported above a sea surface (14) by legs which extend to the sea bottom (16). A drill guide (30) of rigid open framework construction extends down from...
4470724 Tying system for offshore terminal  
A tying arrangement is described for use with an offshore terminal wherein a transfer structure near the sea surface is anchored by a group of anchor lines extending at downward inclines to the sea...
4470721 Crane assembly for floatable oil/gas production platforms  
A floatable oil/gas production platform assembly has a deck, disposed beneath the deck a zone including a plurality of adjacent stations for support of oil/gas flowlines/risers originating from...
4468156 Underwater structure and method for its construction  
The invention relates to a method of constructing a free standing structure in a body of water, comprising the steps of attaching an impervious membrane to a floating formwork, filling the membrane...
4432670 Combination connector and flex joint for underwater tension elements  
Combination tension connector and flex joint for underwater tension elements, such as the tension elements of a leg of a tension leg platform. The flex joint is of generally ball and socket type,...
4422806 Sliding tension leg tower  
A compliant offshore drilling and producing structure is disclosed. Axial piles extend from the sea floor above the water's surface and are enveloped by sleeves extending downwardly from a rigid...
4421436 Tension leg platform system  
A tension leg platform system for use in drilling wellbores into the floor of an offshore body of water. Included in the system is a buoyancy control vessel having a plurality of pull down cables...
4395160 Tensioning system for marine risers and guidelines  
A double rack and pinion device (17) is used to maintain substantially constant upward tension on a marine riser (16) that extends from stationary equipment (11) on the ocean floor to a floating...
4386874 Method for installation of a mooring cable  
A method of mooring a vessel to an anchoring structure connected into the floor of a body of water wherein a drum containing a coiled mooring cable is lowered down to the anchoring structure, a...
4374630 Anchor connector for tension leg  
An anchor connector with a latch segment retainer body (28) having a lost motion connection to the connector body (36) which has a downwardly-extending skirt (38). Latch segments (30) pivotally...
4367982 Safety device for anchored marine structure  
A fail-safe guy line system for marine structures. In the event of cable failure near the water surface, a braking device, such as a cable clamp, can be wedged into a sheave or fairlead to prevent...
4364323 Vertical stressed mooring tether in a floating oil platform  
A floating platform intended to be anchored to the sea bed incorporates a substantially vertical tether. The tether is fitted with a gas-operated tension spring device capable of generating an...
4358219 Method for confining an uncontrolled flow of hydrocarbon liquids  
Method for confining and collecting a flow of hydrocarbon fluids which are uncontrollably issuing from a source thereof at the floor of a body of water. A tension leg type floating vessel is...
4320993 Tension leg platform mooring tether connector  
A connector apparatus for connecting a tension leg platform mooring tether to a subsea foundation, the apparatus comprising: a plug positioned on the lower end of the mooring tether for mating...
4320992 Grout distribution system  
A grout distribution system for grouting the interior of a piling driven through a jacket leg of a marine platform or grouting the interior of a similar cylindrical structure.
4285615 Corrosion resistant tension leg cables  
A tension leg cable is connected between a floating structure and a seafloor anchor means. The cable is a multi-strand cable having voids between adjacent strands. A fluid tight vulcanized rubber...
4281613 Method of and apparatus for mooring a floating structure  
A tension mooring system for a floating structure such as a drilling or production platform having a plurality of permanent mooring lines extending upwardly from a plurality of bottom anchors and...
4266889 System for placing freshly mixed concrete on the seafloor  
A means for placing freshly mixed concrete on the ocean floor at great des. A pipeline is grossly positioned by a ship whereas the position of the submerged end is controlled by guide wires, water...
4199279 Method and apparatus for placing concrete under water  
An improved method and apparatus for placing concrete under water in an easy and effectual manner. The method comprises the steps of: immersing a tremie tube having a special valve device, into...
4198179 Production riser  
A riser for production of oil and gas in a marine location with the riser connected to the casing supported at the mud line of a body of water and extending upward in the water to a tension moored...
4185694 Marine riser system  
A marine riser system is provided which extends between a floating offshore platform and well means in a seabed formation and which has riser end portions connected in novel manner to the floating...
4174628 Marine riser measuring joint  
A marine pipe riser, through which wells may be drilled during offshore drilling operations, is provided with an instrumented section equipped with stress-measuring elements so that loads and...
4114393 Lateral support members for a tension leg platform  
Apparatus and method for mooring a tension leg platform at an offshore location wherein the tensioned cables of the platform legs are laterally supported by a plurality of rigid, fixed-dimensioned...
4065933 Method of reforming the ground  
This invention relates to a method of forming a solid foundation in soft ground or stratum by mixing chemical agent into the soft ground soil to solidify it. This ground reforming method comprises...
4062313 Installation of vertically moored platforms  
This invention relates to the installation of a Vertically Moored Platform over a selected well site. The platform or structure is supported on a buoyant gravity base and floated to a position over...
4054034 Method for casting concrete tanks in water  
Method of and apparatus for forming (casting) closed-ended hollow tanks of preferably circular or modified circular section and of diameter and height (length) ranging from small up to one hundred...
4048945 Removable anchor having retrievable ballast  
Method and apparatus which provides a retrievable anchor for a floating vessel. The apparatus includes a ballast chain secured to a winch located on the vessel. The chain is lowered into a...
4040262 Ice anchor  
An anchor frozen into an ice sheet is used primarily for propelling arctic vehicles by providing a stationary structure toward which the vehicle can be winched. The anchor includes a band of high...
4039025 Apparatus for anchoring an offshore structure  
A structure or template forms a tubular support structure for subsea equipment used in drilling and producing offshore oil and/or gas wells. The template contains production manifolding, remote and...
3986471 Semi-submersible vessels  
An apparatus for damping vertical movement of a semi-submersible vessel having a small waterplane area, whose buoyancy is provided substantially completely by submerged pontoon means and which...
3983706 Marine structure with hydraulic tensioner  
A tension leg marine structure or working platform is floatably positioned above an offshore working site, being maintained in place by a plurality of tension cables that connect to anchors at the...
3983828 Vertically moored platform installation  
This invention relates to the installation of a vertically moored platform over a selected well site. The platform or structure is supported on a buoyant gravity base and floated to a position over...
3982401 Marine structure with detachable anchor  
Semisubmersible marine structure for operation in offshore waters, comprising a work deck which is supported by a buoyant substructure. The latter includes a separably connected anchor unit which...
3982492 Floating structure  
An improved floating structure suitable for use as a floating drilling platform, production platform or other moored floating structure having a vertical tension mooring system with a plurality of...
3976021 Installation of vertically moored platform  
This invention relates to the installation of a Vertically Moored Platform and equipment and apparatus used in effecting such installation. The floating structure, anchored only by essentially...
3934528 Means and methods for anchoring an offshore tension leg platform  
An apparatus and method for anchoring an offshore tension leg platform which includes a platform supported above an ocean surface by buoyant supports comprising at least three vertical buoyant...
3893304 Method and a device for the underwater construction of concrete structures  
A flexible and leak-tight jacket having an internal space which corresponds to the casting space of the underwater structure is placed in position at the construction site, at least part of the...
3861157 APPARATUS FOR DEPOSITING UNDER WATER A FLOWABLE HARDENABLE OR NOT HARDENABLE MASS  
Apparatus for providing under water a flowable, hardenable or not hardenable mass, such as (concrete) mortar, asphaltic bitumen and the like, is provided with a pouring tube depending from a...
3791153 METHOD FOR PLACING HYDRAULIC CONCRETE  
A method for placing hydraulic concrete to form a concrete structure in the water which is characterized in that a paste consisting of portland cement, fine aggregate and water is transferred to...
3745775 UNDERWATER IN SITU PLACEMENT OF CONCRETE  
A flexible container filled with dry concrete which will quickly set upon e addition of moisture. Because of the container's flexibility, it may be formed into any desired container to fit...
3738115 METHOD AND APPARATUS FOR PLASTIC HYDRAULIC MATERIAL  
Method and apparatus for placing hydraulic material through watertight flexible tubes onto the bottom of a steel column, in which said apparatus consists of watertight flexible tubes for...
3726950 METHOD FOR PRODUCING SUB-AQUEOUS AND OTHER CAST-IN-PLACE CONCRETE STRUCTURES IN SITU  
Method for repairing or forming structural bodies of self-hardening fluid cement mortar, in a sub-aqueous or other situs, utilizing body-forming cavity including body-shaping walls of porous fabric...
3595161 METHOD AND APPARATUS FOR REFUSE DISPOSAL  
Method and apparatus for the disposal of solid waste material in which the refuse is transported out to sea to a disposal barge. The barge is provided with a large diameter telescoping pipe...
3577946 STABLE MARINE CONSTRUCTION  
A marine construction and a mooring system therefor for supporting an above surface working platform wherein the marine construction comprises a stable determinate structure held by anchor means...
3540396 OFFSHORE WELL APPARATUS AND SYSTEM  
3505825 SYSTEM FOR REPLACING DETERIORATED WOOD PILING  
Matches 151 - 200 out of 219 < 1 2 3 4 5 >