Owen Oil Tools, Inc.

Core Laboratories, Inc.

Timothy E Lagrange

Bradley Vass

Jeffrey D Gartz

Rockford A Linville

Shaun M Geerts

Jeffrey D Wood

Ian Morrison

Kevin L Baker

Joe McClanahan

David Chastain

Gary Bablitz

Joe Mcclanahan

Lyle A Andrich

Shaun Geerts

A method for completing a subterranean formation includes conveying a perforator assembly into a borehole drilled in the subterranean formation. The perforator assembly includes at least one shaped charge and at least one tracer package that includes at least one fluid production tracer material and a tracer injector. The method further includes forming at least one tunnel in a production structure by detonating one or more shaped charges and injecting the at least one fluid production tracer material into the formation using the tracer injector after the detonation of the at least one shaped charge. The at least one production tracer material physically associates with at least one resident fluid in the subterranean formation.

Perforating and tracer injection system for oilfield applications

A firing head for selectively activating an initiator of a downhole tool may include a housing, a pin, and a moveable stopper. The housing may have a bore and a radially enlarged chamber formed along the bore. The pin is disposed in the bore and has a circumferential groove formed on an outer surface of the shank. The moveable stopper is disposed in the radially enlarged chamber. The stopper is only partially disposed in the groove when the housing is in a vertical position. The stopper moves out of the groove when the housing has a predetermined minimum angular deviation from the vertical position.

Safe firing head for deviated wellbores

A signal transfer assembly includes a signal transfer propellant assembly and a signal transfer connector tube in hydraulic communication with a signal transfer firing head. The signal transfer propellant assembly has a piston and a gas generating energetic material. The signal transfer connector tube has a bore and a first opening allowing fluid communication between a borehole fluid surrounding the connector tube and the bore. The piston generates a pressure pulse when propelled through the bore by the generated gas. The signal transfer firing head assembly includes a housing having a second opening allowing fluid communication between the housing bore and the borehole fluid. A related method includes forming a well tool by operatively connecting a signal transfer assembly as described above to a primary downhole tool and a secondary downhole tool; conveying the well tool into a wellbore using a work string; and activating the secondary downhole tool by initiating the primary downhole tool.

Signal transfer system for activating downhole tools and related methods

A firing head assembly for a well tool includes a shaft, a piston head, a biasing member, and a housing. The shaft has a nose and a terminal end. The shaft also includes a first shoulder and a second shoulder formed between the nose and the terminal end. The piston head slides along the shaft and is positioned between the retaining element and the first shoulder. The biasing member is mounted on the shaft and positioned between the piston head and the second shoulder. The housing has a bore in which the shaft, the piston head, and biasing member are disposed. The housing includes an opening allowing fluid communication between the housing bore and the borehole fluid external to the housing.

Differential pressure firing heads for wellbore tools and related methods

A well tool () includes a perforating gun (), a sealing element (), at least one pressure sensor (), a detector (), a controller (), and an anchor (). The perforating gun () perforates the wellbore tubular in response to a firing signal. The sealing element () is connected to the perforating gun () and generates a pressure differential thereacross. The at least one pressure sensor () is associated with the sealing element () and detects a surface transmitted pressure signal. The detector () detects at least one marker () positioned along the wellbore () and which includes a perforating marker () associated with a perforating depth. The controller () is in signal communication with the at least one pressure sensor () and the detector () and is configured to transmit the firing signal to the perforating gun () only after: (i) the at least one pressure sensor () detects the surface transmitted pressure signal, and (ii) the detector () detects the perforating marker (). The anchor () is connected to the perforating gun () and selectively locks the perforating gun () to the wellbore tubular.

Perforating gun

Growing community of inventors

Ponoka, Canada

Timothy E Lagrange