|
Match
|
Document |
Document Title |
|
|
8162047 |
Reverse-circulation cementing of surface casing
An apparatus for reverse circulation cementing of surface casing in subterranean formations and associated methods are provided. One example of a method may involve a method of reverse circulation...
|
|
|
8127851 |
Mill and method for drilling composite bridge plugs
A system used to remove multiple isolation plugs from a wellbore. The system is efficient in fluidizing and circulating proppant located below an upper plug resting on top of proppant settled above...
|
|
|
8096357 |
Casing make-up and running tool adapted for fluid and cement control
The apparatus of the present invention provides a top drive supported tool for making up and running casing strings into a borehole. The tool comprises a fill-up and circulation assembly and a...
|
|
|
8091628 |
Apparatus and method for providing fluid and projectiles to downhole tubulars
Apparatus and methods for providing fluid and projectiles to downhole tubulars includes a manifold. The manifold may include a housing, a cartridge disposed within the housing, and an actuator. The...
|
|
|
8069922 |
Multiple activation-device launcher for a cementing head
A multiple activation-device launching system for a cementing head comprises a launcher body and at least one launching chamber that are sized to receive one or more activation devices therein. The...
|
|
|
7918278 |
Method and apparatus for dropping a pump down plug or ball
An improved method and apparatus for dropping a ball, plug or dart during oil and gas well operations (e.g., cementing operations) employs a specially configured valving member with curved and flat...
|
|
|
7878237 |
Actuation system for an oilfield tubular handling system
An actuation system for a tubular handling mechanism of a tubular handling assembly has a mud flow path passing through rotating parts and non-rotating parts of the tubular handling assembly. A...
|
|
|
7866390 |
Casing make-up and running tool adapted for fluid and cement control
The apparatus of the present invention provides a top drive supported tool for making up and running casing strings into a borehole. The tool comprises a fill-up and circulation assembly and a...
|
|
|
7841410 |
Method and apparatus for dropping a pump down plug or ball
An improved method and apparatus for dropping a ball, plug or dart during oil and gas well operations (e.g., cementing operations) employs a specially configured valving member with curved and flat...
|
|
|
7802620 |
Cementing head
A tool for dropping one or more balls and then one or more darts features a closable ball drop opening that works automatically after the ball release to minimize damage to the subsequently...
|
|
|
7669648 |
Polymer shock absorber for use with well head lubricator assembly
A shock absorber for use with a lubricator assembly comprises a body made substantially of a polymer material. An end of the body is supportable by a cup. Upon plunger strike, the cup can travel...
|
|
|
7654324 |
Reverse-circulation cementing of surface casing
An apparatus for reverse circulation cementing of surface casing in subterranean formations and associated methods are provided. One example of a method may involve a method of reverse circulation...
|
|
|
7654325 |
Methods and apparatus for handling and drilling with tubulars or casing
The present invention provides a method and apparatus for handling tubulars and drilling with tubulars such as casing into a formation. In one aspect of the invention, the apparatus comprises a...
|
|
|
7607481 |
Method and apparatus for dropping a pump down plug or ball
An improved method and apparatus for dropping a ball, plug or dart during oil and gas well operations (e.g., cementing operations) employs a specially configured valving member with curved and flat...
|
|
|
7575048 |
Drive for a rotating chemical dispensing apparatus
A chemical dispensing apparatus includes a housing and a cartridge support within the housing. A rotating cartridge with chemical stick receptacles is rotatably supported about an axis of rotation...
|
|
|
7552763 |
Sphere launcher
The present invention provides an apparatus for launching spheres into a gas riser in order to reduce the risk that the output from the riser is lost. The apparatus comprises a rotatable body that...
|
|
|
7426963 |
Piggable flowline-riser system
This invention relates to a flowline-riser production system for the recovery of hydrocarbons from offshore wells, and a method for pigging the interior surfaces of the riser and flowlines. More...
|
|
|
7308933 |
Power assisted lift for lubricator assembly
An improved lubricator assembly for receiving a well plunger or other downhole tool wherein a hinge is connected between a lower portion and an upper riser of the lubricator assembly and a power...
|
|
|
7255162 |
Methods and apparatus for use in subterranean cementing operations
The present invention relates to subterranean cementing operations, and more particularly to an apparatus useful in loading cementing plugs and darts into tubulars, and methods of using such...
|
|
|
7163064 |
Surface flow valve and method
A surface flow control system for a well. The system comprises a main housing having a main bore there through, and a first port communicating with the main bore. The system further comprises a...
|
|
|
7069991 |
Method and apparatus for surge pressure reduction in a tool with fluid motivator
Apparatus and method for controlling pressure surges in a wellbore. One embodiment provides a downhole surge control tool equipped with a fluid motivator. The fluid motivator may be, for example,...
|
|
|
7040401 |
Automated plunger catcher and releaser and chemical launcher for a well tubing method and apparatus
An automated plunger catcher and releaser and chemical launcher for a well tubing method and apparatus. In one configuration, arrival of a plunger is sensed as the plunger ascends from the wellbore...
|
|
|
7000696 |
Method and apparatus for determining the temperature of subterranean wells using fiber optic cable
Methods and apparatuses to determine the temperature profile of a pressurized wellbore using a fiber optic cable and an anchor are disclosed. Furthermore, a pressurized wellhead spool that couples...
|
|
|
6789619 |
Apparatus and method for detecting the launch of a device in oilfield applications
A system for use in detecting the launching of a device, such as a wiper plug or a sealing ball, is described having a first component, such as a detectable object disposed within the device, and a...
|
|
|
6755244 |
Lubricator
A lubricator (10) includes a tubular body (12) through which passes a support member such as coil tubing or wireline, and an elongate slot (18) for inspection of or access to the support. A sleeve...
|
|
|
6637515 |
Method and apparatus for reducing plunger seal wear on automatic casing swab lift systems
An apparatus is disclosed for improving plunger seal life on a casing swab system. The apparatus includes a diameter adapter disposed between an upper end of a wellbore casing and a lubricator...
|
|
|
6634423 |
Lifting top drive remote control cement head
A lifting top drive sub sea staging cement head in which cement slurry flows from outside into its central bore, thru a rotating swivel connection. The cement head has a rotatably indexable...
|
|
|
6571868 |
Well head lubricator assembly with polyurethane impact-absorbing spring
A lubricator assembly for a well head of a gas-producing well includes an elongated rigid tubular body having upper and lower ends and a cylindrical interior chamber open at the lower end for...
|
|
|
6536461 |
Subsea pig launching apparatus
A subsea pig launching apparatus for launching one or more pigs into a flowline which is fluidly connectable to a source of well fluid comprises at least one first hub to which the source of well...
|
|
|
6533032 |
Subsea pig launcher and method of using the same
A device and method are provided for storing pipeline pigs and launching the pigs into a subsea production pipeline. The device is installed in line with a pipeline and includes a frame, a magazine...
|
|
|
6520257 |
Method and apparatus for surge reduction
Improvements are disclosed in surge reduction tools for running in casings or casing liners downhole with the ability to restore circulation in the event a tight hole condition is encountered. The...
|
|
|
6454011 |
Method and system for moving equipment into and through a conduit
A method and system are disclosed for moving equipment into and through a conduit that is preferably an oil and/or gas production well, wherein use is made of an uphole equipment storage and...
|
|
|
6419015 |
Apparatus and a method for launching plugs
The invention relates to an apparatus and a method for launching plugs used in the construction of an oil or of gas well. There is provided an apparatus for launching a plug, said apparatus...
|
|
|
6390189 |
Feed apparatus for feeding capsular cartridges into drilled hole
The invention relates to a feed apparatus for feeding capsular cartridges into a drilled hole, the apparatus being intended to be used in conjunction with a rock drill apparatus. The feed apparatus...
|
|
|
6302199 |
Mechanism for dropping a plurality of balls into tubulars used in drilling, completion and workover of oil, gas and geothermal wells
A housing is attached to a tubular sub located within a tubing string suspended in an earth borehole, the connection being an angled ball channel connected between the housing and the tubular sub....
|
|
|
6206094 |
Launching tool for objects downhole
The invention comprises a tool for launching objects downhole, such as one or more plugs in a desired sequence. The movements leading to the release of the individual plugs are regulated by virtue...
|
|
|
6206095 |
Apparatus for dropping articles downhole
A plug-dropping head in which the objects to be dropped are placed in individual discrete passages. A motor-driven or hand-operated rotating member orients an entrance to a passage going through it...
|
|
|
6182752 |
Multi-port cementing head
A plug-dropping head capable of dropping balls or plugs or other objects is disclosed. The plug-dropping head has a compact design with a cylinder having multiple chambers for storage of plugs...
|
|
|
6170573 |
Freely moving oil field assembly for data gathering and or producing an oil well
An oil field assembly for gathering data about or producing an oil well having a self regulating assembly for free movement by gravity or the differential pressure of fluids in the tubing string of...
|
|
|
6123152 |
Retrieving well tools under pressure
A shut-off valve for use in a downhole string of tools adapted to be retrieved from a well under pressure is disclosed. The valve has a housing and a piston slidably disposed within an axial bore...
|
|
|
6092603 |
Method and equipment for the flow of offshore oil production with primary gas separation
|
|
|
6059042 |
Completions insertion and retrieval under pressure (CIRP) apparatus including the snaplock connector
A completions insertion and retrieval under pressure (CIRP) apparatus utilizes a snaplock connector to assemble uphole a tool string of any desired length prior to lowering the tool string into a...
|
|
|
6039122 |
Methods and apparatus for automatically lauching sticks of various materials into oil and gas wells
An apparatus, and related methods, for automatically releasing sticks of various materials into oil and gas wells. The apparatus has an enclosed magazine which has several chambers for the sticks....
|
|
|
5960881 |
Downhole surge pressure reduction system and method of use
A system for reducing pressure while running a casing liner, hanging a casing liner from a casing and cementing the liner in a borehole during a single trip downhole is disclosed. Some of the...
|
|
|
5950725 |
Hydraulic wiper plug launcher
A hydraulic wiper plug launcher (8) includes a coupler (22) releasably mounted on the upper end of a well casing (9). The outer coupler body (10) has an inner shoulder (49) and an open ended plug...
|
|
|
5950724 |
Lifting top drive cement head
A subsea lifting top drive cement head in which cement flows from the top. The cement head includes lower and upper assemblies with a bore for fluid flow, and a body in sure lock connection with...
|
|
|
5923558 |
Automated integrated input-output control system apparatus
The automated integrated input-output control system apparatus. A versatile industrial control apparatus that can be utilized as a modular unit or integrated into industrial machinery or tools to...
|
|
|
5857523 |
Well completion lubricator valve
Apparatus and method of isolating a well to allow intervention equipment to be installed in the upper section of tubing and surface equipment to be tested prior to running in the well is described...
|
|
|
5848646 |
Well completion apparatus for use under pressure and method of using same
A completions insertion and retrieval under pressure (CIRP) apparatus utilizes a snaplock connector to assemble uphole a tool string of any desired length prior to lowering the tool string into a...
|
|
|
5842816 |
Pig delivery and transport system for subsea wells
A pig delivery and transport system shown schematically in FIG. 1 has a looped line generally indicated at (10) divided into three sections (10A), (10B) and (10C). Line section (10A) is a low...
|