Shell Oil Comapny

Thrubit, B.v.

Well Equipment Solutions Holdings Pty Ltd

Eugene Murphy

Aron Robert Ekelund

Edward Paul Cernocky

Matthew Robert George Bell

Christopher Burres

Allen Lindfors

Douwe Johannes Runia

Guido Stangherlin

A well system and method including applying suction to a wellhead housing outlet () to divert the flow of subterranean gas from flowing through a gas conduit through the wellhead housing (). An operation can then safely be performed on a component (e.g. removing a hanger) of the wellhead apparatus. Well gas can be diverted to a flare system (). Suction can be applied by a venturi system including eductors (). The method may include opening the gas conduit outlet once a pressure sensed at the conduit outlet is negative. Suction may also be applied to an upper outlet ().

Method and system for controlling gas flow

A logging system for use in a wellbore formed in an earth formation. A tubular conduit is provided extending from surface into the wellbore, as well as a surface communication and control device located at the surface. A telemetry device located inside the wellbore is capable of sending and receiving signals to and/or from the surface communication and control device, the signals representing commands and/or data. Also provided is a logging tool string that is capable of passing from a position within the conduit to a position outside the conduit at a lower end part thereof and capable of being suspended by the conduit in said position outside the conduit. Communication of the commands and/or data between the logging tool string and the telemetry device is established using a communication interface between the logging tool string and the telemetry device.

Logging system, method of logging an earth formation and method of producing a hydrocarbon fluid

An apparatus for perforating a casing string including a first module and a second module, each including a gun assembly. The first module is positioned longitudinally adjacent the second module on the casing string. Each module contains a firing assembly for igniting the gun assembly in the first module, a remote signaler to remotely detonate the firing assembly, and ballistic transfer assembly for igniting the gun assembly in the second module. The ballistic transfer assembly includes a booster charge.

Perforating apparatus, firing assembly, and method

A firing assembly for activating a perforating device comprising a module having a first chamber and a second chamber. The firing assembly comprises a firing head for transferring ballistic energy to the perforating device, said firing head having a detonator and a plurality of ballistic charges, said detonator coupled to at least one of said first gun assembly and said second gun assembly a remote telemetry device for sending a detonation signal, a transmission medium for transmitting said detonation signal to said firing head, and a receiving device for receiving said detonation signal and a processor for interpreting said detonation signal and activating said detonator.

A method of drilling a borehole into a subsurface earth formation, using a tubular drill string which includes at its lower end a bottom hole assembly comprising a drill bit, a drill steering system, and a surveying system. The drill string includes a selectively closable passageway for passing an auxiliary tool from a first position interior of the drill string above the bottom hole assembly to a second position. In the second position, at least part of the auxiliary tool is exterior of the drill string below the bottom hole assembly. The drill string is progressed into the earth formation by drilling. When a tool operating condition is met the passageway is opened and the auxiliary tool is passed through the passageway from the first position to the second position, where the auxiliary tool is operated.

Drilling a borehole

Disclosed is a device and method for externally perforating a well-bore casing. The perforating apparatus is attached to the outside of the casing itself and is conveyed along with the casing when it is inserted into the well bore. The perforation is accomplished using two groups of charges which are contained in protective pressure chambers which are arranged radially around the outside of the wellbore casing. The pressure chambers form longitudinally extending ribs which conveniently serve to center the casing within the well bore. One group of charges is aimed inward in order to perforate the casing. A second group is aimed outward in order to perforate the formation. In an alternative embodiment, only one group of bi-directional charges is provided.

Casing conveyed well perforating apparatus and method

Disclosed is a casing conveyed perforating apparatus and method for externally perforating a wellbore casing. The perforating apparatus is attached to the outside of the casing and is conveyed along with the casing when it is inserted into the wellbore. The perforation is accomplished using two groups of charges, which are contained in protective pressure chambers. Each pressure chamber is positioned radially around the outside of the wellbore casing. The pressure chambers form longitudinally extending ribs, which conveniently serve to center the casing within the wellbore. One group of charges is aimed inward in order to perforate the casing. A second group is aimed outward in order to perforate the formation. In an alternative embodiment, only one group of bi-directional charges is provided.

Growing community of inventors

Houston, TX, United States of America

Eugene Murphy