Schlumberger Technology Corporation

Christopher Sarvari

Hubertus V Thomeer

Douglas Pipchuk

Mohamed Mehdi

Andrew Prisbell

James G Filas

Jose Escudero

Pierre F Le Foll

Jia Tao

Indranil Ghosh

Keith Eugene Barnard

Corey Lehman

David Iblings

Embodiments of the present disclosure may provide a perforation tool and method for operating the perforation tool. The perforation tool may include one or more firing heads and one or more gun assemblies. The perforation tool may also include a release mechanism coupled to the one or more firing head and the one or more gun assemblies. The release mechanism may release the one or more gun assemblies to a bottom of a wellbore upon firing of the one or more gun assemblies and maintain the one or more firing heads on the perforation tool.

Fullbore firing heads including attached explosive automatic release

A technique facilitates on-demand release of desired sections of a well string, e.g. sections of a perforating gun string, via at least one on-demand release tool. The on-demand release tool has an activation mechanism which may be selectively actuated to transition the on-demand release tool from a first loadbearing configuration to a second loadbearing configuration. The on-demand release tool may then be transitioned to a release stage which allows a first section of the on-demand release tool to be separated from a second section of the on-demand release tool by activating a release mechanism. In at least some applications, the on-demand release tool also comprises a ballistic transfer device to enable reliable ballistic transfer between sections of the perforating gun string.

On-demand release tool system and methodology

A method and apparatus for measuring formation properties including coiled tubing fitted with a bottom hole assembly. The bottom hole assembly includes apparatus to measure formation fluid properties, apparatus and methods to transmit the formation fluid properties to a surface monitoring system, apparatus and methods to isolate a section of a wellbore, and apparatus and methods to control the flow of fluid entering the coiled tubing.

Zonal testing with the use of coiled tubing

A multizone testing system (), for the testing of subterranean layers, comprises an upper subsystem () comprising a control station (), a main isolation packer () for isolating the upper subsystem () from the lower subsystem (), a lower subsystem () comprising an array of individual apparatuses () connected in series, each apparatus () being adapted for the testing of one layer and comprising a series of remotely activated tools for hydraulically isolating and testing the corresponding layer and a communication system comprises communication means between the control station () and the surface and between the control station () and each of the individual apparatuses () in order to control the remotely activated tools of the individual apparatuses for sequential testing of the layers. A multizone testing method for the testing of a plurality of subterranean layers intersected by a well, using a multizone testing system () comprises the steps of running and positioning said system () into the well such that each individual apparatus () is adjacent to a layer to be tested and controlling the remotely activated tools of the individual apparatuses for a sequential test of the layers.

Downhole, single trip, multi-zone testing system and downhole testing method using such

A method and apparatus for measuring formation properties comprising coiled tubing fitted with a bottom hole assembly, wherein said bottom hole assembly comprises means to measure formation fluid properties, means to transmit said formation fluid properties to a surface monitoring system, means to isolate a section of a wellbore, and means to control the flow of fluid entering said coiled tubing.

Growing community of inventors

Missouri City, TX, United States of America

Christopher Sarvari