Grant Prideco, Inc.

Dreco Energy Services Ulc

Tom Rune Koløy

Paul David Busengdal

Vijay Kumar Keerthivasan

Jarle Trones

Tore Sørheim

Pål Zon Rafdal

Nicolai Isaak Stubbrud

Ståle Granberg

A valve for use in a wellbore for facilitating a multi-stage stimulation method includes a first sleeve configured to move to open the valve. In addition, the valve includes a second sleeve configured to move to close the valve. The first sleeve and the second sleeve are both movable in a first direction. Movement of the first sleeve a first distance in the first direction opens the valve and subsequent movement of the second sleeve a second distance in the first direction closes the valve. Further, the valve includes a third profile configured to engage a third key of a tool for operating the valve. The third profile is shaped to prevent movement of the tool in a second direction opposite to the first direction when engaged with the third key of the tool.

Valve and method for multi-stage well stimulation

The present invention relates to a method, a system () and tool(s) () for single trip through drill pipe proppant fracturing of subterranean formations () surrounding oil and/or gas production wells ().

Single trip&#x2014;through drill pipe proppant fracturing method for multiple cemented-in frac sleeves

Growing community of inventors

Sandnes, Norway

Tom Rune Koløy