Matches 1 - 50 out of 93 1 2 >


Match Document Document Title
8978751 Method and apparatus for sealing a wellbore  
Methods and apparatuses for sealing a wellbore are provided. A seal assembly carried by a pair of opposing ram blocks of a blowout preventer is provided. The seal assembly includes a pair of seals...
8979062 Secondary activation of packer and method  
Method, ram block and ram blowout preventer (BOP) for sealing a well. The BOP includes a body having a first chamber extending along a first direction and a second chamber extending along a second...
8770274 Shear seal blowout preventer  
A shear/seal ram provides a knife edge at the shearing edge and the knife edge is inclined to minimize the cutting force required and to leave a clean cut edge. The knife edge is presented in an...
8166993 Method and systems for using a shim plate for increased strength  
Blowout preventer (BOP) and method for sealing a well. The BOP includes a body having first and second conduits, the first conduit being substantially perpendicular on the second conduit; a piston...
8136247 Method of forming a blowout preventer body  
A method of manufacturing a blowout preventer body includes the steps of: providing more than one billet; forming a first billet to form a first portion of the blowout preventer body; forming a...
7051989 Blowout preventer and movable ram block support  
A blowout preventer which, in certain aspects, has a main body and ram block holding apparatus releasably secured to and movable with respect to the main body and/or to a door or bonnet, movable...
7044430 Lock bars for blowout preventer  
Lock bars for blowout preventers and blowout preventers having, in certain aspects, a body with a top, a bottom, and a bore therethrough, at least one bonnet releasably secured to the body, a...
6974135 Variable bore ram  
A ram type blowout preventer includes variable ram packers for sealing about tubulars of different outside diameters in the bore of the preventer housing or about a single tubular having a...
6955357 Extended range variable bore ram packer for a ram type blowout preventer  
A variable bore ram packer including a ram body, a top seal and a packer member designed for use in a standard ram-type blowout preventer used in oil and gas drilling operations is disclosed. The...
6857634 BOP assembly with metal inserts  
A blowout preventer assembly 10 includes opposed rams 12, 14, each including a rubber or elastomer sealing assembly 16, 18, with a plurality of inserts 20 forming an array 22 of metal inserts...
6845959 Quick release blowout preventer bonnet  
A bonnet lock mechanism for a blowout preventer including an angled surface disposed in the blowout preventer, a latching dog having a tapered surface disposed in the bonnet, and a lock actuator...
6676103 Wireline centralization apparatus and method  
An apparatus (10, 50) for moving an elongate member (102) (such as a wireline (102)) which passes through a throughbore (70, 97) of a valve device such as a wireline valve used in the hydrocarbon...
6394460 One-piece ram element block for wireline blowout preventers  
Ram seal units for attachment to the rams of blowout preventers incorporate an integral ram seal block having a central web, with a parallel rectangular elastomer support plates extending from...
6367804 Variable bore ram packer for tapered tubular members in a ram type blowout preventer  
A variable bore ram packer designed for use in a standard ram-type blowout preventer used in oil and gas drilling operations is disclosed. The variable bore ram packer is molded of an elastomeric...
RE37538 Ram type blowout preventer  
There is disclosed a ram type blowout preventer wherein the outer ends of guideways radiating from the bore of the body to receive the rams are closed by bonnets bolted to the body and sealed with...
6296225 Ram bore profile for variable bore packer ram in a ram type blowout preventer  
An improved ram bore profile for use with a variable bore ram packer designed for use in a standard ram-type blowout preventer used in oil and gas drilling operations is disclosed. The improved...
6164619 Bi-directional sealing ram  
A shuttle valve assembly in a ram-type BOP selectively connects the volume behind the rams to the more highly pressurized wellbore volume adjacent to the rams (either above or below the rams). The...
5906375 Rubber riveting of molded parts  
A combination of a rubber or other elastomer part and a plastic or metal part is bonded by both chemical and mechanical means. The mechanical means is in the form of molded rivets integrally...
5860478 Sub-sea test tree apparatus  
Apparatus and a method for killing a live well after activation of a well blowout preventer is described. This is achieved by providing apparatus in the form of a shear or kill sleeve (34) in a...
5713581 Fibrous seal for blowout preventer  
A high pressure seal material, such as for a lateral "T" seal of a shear ram blowout preventer, is disclosed wherein the seal material is preferably nitrile rubber and includes uniformly dispersed...
5603481 Front packer for ram-type blowout preventer  
A ram-type blowout preventer (10) has a front packing arrangement (24) with a packer assembly (28) therein. Packer assembly (28) includes an elastomeric packer member (30) and a recess (46)...
5360061 Blowout preventer with tubing shear rams  
An improved shearing blowout preventer having improved shearing rams for shearing a tubing string extending through the bore of the preventer body. The shear rams include a shear ram having an...
5294088 Variable bore packer for a ram-type blowout preventer  
The variable bore packer for a ram-type blowout preventer includes a body of resilient packing material with upper and lower plates embedded in the upper and lower surfaces of the body and upper...
5180137 Ram type blowout preventer having improved ram front packings  
There is disclosed a ram type blowout preventer with rams having ram front packings disposed within a recess extending across the front face of each ram body and including a seal strip of...
5165704 Blowout preventer bonnet seal carrier  
A sealing structure for sealing between substantially aligned cylindrical surfaces including a seal carrier having a tubular body with external sealing ring grooves spaced apart so that sealing...
5127623 Inner seal for ram-type blowout preventer  
An inner seal assembly for a pair of opposed ram bodies (12, 14) of a ram-type blowout preventer (10) includes an elastomeric packer (22) and a resilient insert (23). Resilient insert (23) has a...
5125620 Ram type blowout preventer having improved ram front packing  
There is disclosed a ram type blowout preventer whose rams have ram front packings which include seal strips of elastomeric material and top and bottom metal plates received in recesses across the...
5064164 Bop seal with improved metal inserts  
A blowout preventer is provided with an improved sealing assembly for sealing engagement with a pipe extending through the blowout preventer into a well bore. The sealing assembly includes an...
5044602 Blowout preventer  
A blowout preventer for use on wells and especially adapted to use on a pumping well during a steam flood operation including an upper housing having oppositely disposed rams for extension and...
5044603 Variable bore ram rubber with non-overlapping inserts  
An improved sealing device for variable bore ram blowout preventers of the type that uses a pair of opposed semi-cylindrical ram blocks to urge a pair of resilient sealing elements into sealing...
5013005 Blowout preventer  
A blowout preventer with a body having a central bore and aligned, opposed guideways extending outward from said central bore, a ram in each of said guideways, means for moving the rams in the...
4986511 Seal structure for elevated temperature service  
A seal comprises a sandwich of a soft, low modulus resinous layer between two outer layers of harder, high modulus resinous material to provide an effectve high pressure seal at both low and high...
4938290 Wireline blowout preventer having mechanical and hydraulic sealing  
A single ram unidirectional wireline BOP system is provided having both mechanical and hydraulic sealing capability. A BOP body having a vertical flow passage and intersecting horizontal ram...
4930745 Variable bore ram rubber  
An improved sealing element for variable bore ram blowout preventers of the type using two semicircular ram blocks to urge a resilient sealing member into sealing circumferential contact with the...
4927112 Blowout preventer  
A blowout preventer for use on wellheads for sealing around tubing strings, polished rods, and wirelines, including a body having a bore therethrough and connectable on a wellhead, integral...
4825948 Remotely variable multiple bore ram system and method  
Method and apparatus for varying from a remote location the bore of shoes within a ram-type blow out preventer to sealingly engage pipe of varying diameters. A plurality of shoe pairs is provided,...
4770387 Variable ram seal for blowout preventers  
An improved blowout preventer of the ram type is provided with means allowing limited relative rotational movement of support elements in the seal along with radial inwardly directed movement of...
4703938 Seal for ram type blowout preventor  
A blowout preventor ram seal having a reversible top seal portion and a reverisble face seal portion wherein the two portions are installed on a ram block and attached to the ram block and to each...
4690411 Bonded mechanically inner connected seal arrangement for a blowout preventer  
An expansible and contractable replaceable seal arrangement includes an elastomer body bonded to at least a pair of spaced, rigid plate members with a mechanical arrangement interconnecting the...
4655431 Ram-type blowout preventer  
An improved blowout preventer having a body with a central bore and aligned opposed passages extending out from the central bore, a ram assembly in each of the passsages and including a ram body...
4647002 Ram blowout preventer apparatus  
A top seal, ram assembly, blowout preventer, and housing for a blowout preventer are disclosed according to the invention in which outer anti-extrusion plates are provided at the ends of the top...
4646825 Blowout preventer, shear ram, shear blade and seal therefor  
Opposed rams are sealably and reciprocally mounted in a body with opposed shear blades projecting from one end of each ram for movement toward each other to sever an elongated object extending...
4638972 Valve apparatus  
There is disclosed a blowout preventer used in the drilling and completion of oil and gas wells and having rams which are moved within chambers in a housing which intersect a bore therethrough...
4583569 Wireline blowout preventer  
A ram-type blowout preventer having a removable seal insert contained in an insert cavity formed in the forward end of the ram body. Each seal insert includes an elastomeric body which forms an...
4553730 Ram-type blowout preventer and packer therefor  
An improved ram-type blowout preventer including a housing with a vertical bore therethrough and opposed, aligned ram guideways extending outward from the bore through the housing, a ram in each...
4541639 Ram-type blowout preventer with improved ram front packer  
A ram-type blowout preventer having a body with a central bore extending therethrough and with guideways extending outward from the central bore, a ram in each of the guideways and having a recess...
4508312 Ram-type blowout preventer  
A ram-type blowout preventer having a housing with a vertical bore, aligned ram guideways extending outward from opposite sides of the bore, a ram in each guideway, means for moving the rams...
4506858 Wireline valve inner seal  
Disclosed is a ram assembly for a wireline blowout preventer, not requiring wireline guides, and having an improved inner seal and outer seal. The improved inner seal utilizes molded in layered...
4467996 Valve apparatus  
A valve apparatus of the ram type having a pair of ram assembly bodies in opposed relation transverse to the valve bore. The ram bodies carry, in recess, respective inner seals which, upon inward...
4456215 Inner seal and support rod assembly for high pressure blowout preventers  
A new and improved inner seal and support rod assembly for a blowout preventer including an inner seal assembly for improved sealing and configured to promote ease of maintenance and removal...

Matches 1 - 50 out of 93 1 2 >