Schlumberger Technology Corporation

Services Petroliers Schlumberger

Andrew Prisbell

Atsushi Nakano

Hari Prakash Kalakonda

Todd Busch

Erick Lowe

Jay Garza

Bhagyashri Walse

Jose Escudero

Ashutosh Gupta

Mohamed Mehdi

Terry Butler

Stephen D'Mello

Rucha Deshmukh

Steven Hernandez

Christopher Sarvari

Indranil Ghosh

A perforation tool is described herein. The perforation tool has a charge unit comprising a shaped charge; an initiator attached adjacent to the charge unit and comprising a detonator disposed to energize the shaped charge; and a switch attached adjacent to the charge unit and disposed to apply a voltage to the detonator, the switch comprising a processing unit configured to receive data representing depth, compare the received data to a depth target, and apply the voltage to the detonator if the received depth indicates the depth target has been reached. The processing unit can be configured to receive any data that can be converted to depth or any data that can represent an activation condition and apply the voltage when the data indicates the activation condition has been met. The processing unit can be programmed to initiate and operate autonomously in a well independent of surface signals.

Intelligent switching in downhole tools

A perforation tool, and a bulkhead member for a perforation tool, are disclosed. The perforation tool has a loading tube, an initiator module, and a bulkhead member connected between the loading tube and the initiator module. The bulkhead member has a hollow body member with a central transverse plate having a central bore through the transverse plate along a longitudinal axis of the body member and an electrical conductor disposed in the central bore, the electrical conductor having a pin connection at a first end thereof and a box connection at a second end thereof.

Pressure bulkhead

A charge canister for a perforation tool has a cylindrical body with an expansion portion extending along a radius of the cylindrical body, the expansion portion having a narrow portion at a first end of the expansion portion and a wide portion at a second end of the expansion portion opposite from the first end. An explosive material is disposed within the expansion portion in direct contact with an interior surface thereof.

Shaped charge integrated canister

A perforation tool for use in a well bore is described herein. The perforation tool comprises a housing; a plurality of frames that fit inside the housing, each frame having a cylindrical shape with a central axis and a plurality of liners, each liner having an axis perpendicular to the central axis, wherein the axes of the liners of each frame are disposed in a plane perpendicular to the central axis, and the frames are axially stackable; an electrical conductor disposed along a central passage of each frame; a plurality of shaped charges secured in the liners of the frames; a bulkhead member disposed in the housing and forming a seal with the housing; and an initiator module disposed in the housing with the bulkhead member between the initiator module and the plurality of frames.

Modular perforation tool

A transportable well completion tool is described. The transportable well completion tool comprises a housing with a charge module disposed within the housing. The charge module comprises explosive charges. An initiator module comprising a detonator is coupled to the housing, and a bulkhead member is disposed within the housing between the initiator module and the charge module. A containment cover is secured to the housing to cover the detonator. The transportable well completion tool can be transported with the containment cover in place, and the containment cover can be removed to connect the well completion tool to a tool string for downhole deployment.

Transportable perforation tool

A perforation assembly includes a perforation tool and a propulsion unit coupled to the perforation tool, the propulsion unit comprising an impeller and a protective structure disposed around the impeller.

Perforation tool with propulsion

A switch for a downhole tool features a circuit board having a plurality of push connectors and a container for enclosing the circuit board, the circuit board making electrical connection in the container by pushing the circuit board into the container, or by pushing electrical connectors into the container.

Wireless switch for perforation tool

A perforation tool features a container with a longitudinal axis; an initiator module in the container, the initiator module having a firing circuit, an electrical contact at the longitudinal axis, and a detonator housing; and a shaped charge frame in the container, the shaped charge frame having a first end; a second end opposite the first end; a recess for accepting a shaped charge between the first end and the second end, the recess having a wide end and a narrow end, wherein the longitudinal axis is between the wide end and the narrow end; a first electrical contact at the first end, the first electrical contact located at the longitudinal axis; a second electrical contact at the second end, the second electrical contact located at the longitudinal axis; an electrical conductor connecting the first and second contacts; and a ballistic pathway coupling the detonator housing to the narrow end of the recess.

Large shaped charge perforation tool

Shaped charge tools for perforating hydrocarbon wells are described herein. A shaped charge frame assembly described herein comprises a tubular electrical conductor and a shaped charge frame disposed around the tubular electrical conductor and rotatably engaged with the tubular electrical conductor. One or more bearings may be used to engage the shaped charge frame with the tubular electrical conductor, or the engagement may be bearing-free.

Oriented-perforation tool

Shaped charge frame

An apparatus for use in a well bore is described herein. The apparatus includes a one-piece housing having a length in an axial direction from a first end to a second end, and end wall and a sidewall defining a cavity within the housing. The apparatus also includes a frame inside the cavity. The frame includes a charge receptacle, a detonator receptacle, a first electrical contact and a second electrical contact. The apparatus further includes a conductive material coupled with the first electrical contact.

Growing community of inventors

Rosharon, TX, United States of America

Andrew Prisbell