Schlumberger Technology Corporation

Keng Seng Chan

J Ernest Brown

Lawrence A Behrmann

Frank F Chang

Ian C Walton

Brett Rimmer

Arthur Milne

Mark Brady

Philippe Enkababian

Bipin Jain

Hassan Chaabouni

Arthur William Milne

Kim Fah Goh

Youssef Elmarsafawi

Nadir M M Odeh

Methods and systems of hydrocarbon production where wellbore stimulation and production is achieved in a single wellbore run-in, and inflow control devices are installed in an existing wellbore completion. A coiled tubing string is conveyed into a substantially horizontal portion of a wellbore, where the coiled tubing string has a production tubular configured to execute both stimulation and recovery operations. The production tubular can include an inflow control device to be installed in an existing wellbore.

Coiled tubing conveyed combined inflow and outflow control devices

An underbalanced perforating system is disclosed for use in openhole completions to maximize the wellbore and matrix cleanup efficiency, to connect natural fracture patterns, and/or to enable application of new drilling fluid technology in difficult subsurface environments. The perforating system can be used for any hydrocarbon bearing formations with any lithology.

Openhole perforating

The invention relates to composition particularly suitable for squeeze cementing operations at temperature above 160 &#xb0; C. This composition comprises an aqueous base, a liquid set-retarder and a solid phase including a blend of micro fine alumina, micro fine silica and a micro fine cementitious material.

Cementing compositions and application thereof to cementing oil wells or the like

A delayed gelling system useful in conformance control in the production of petroleum from subterranean formations, especially low permeability formations, is disclosed. The gelling system comprises a basic silica sol, an activator comprising a hydroxyl donor, and an optional syneresis inhibitor. In the disclosed method of using the gelling system, the gelling system may be pumped into formations with excessive water and/or gas production and thermally activated in the formation at downhole conditions to form a hard gel to reduce water and/or gas production.

Tight formation water shut off method with silica gel

Propped fractures in formations from which fluids are produced are described that have wormholes extending out into the formations from the faces of the fractures at locations distant from boreholes. Methods are given for creating such propped fractures having wormholes in which either a closed propped fracture is formed and then the wormholes are formed, or the entire fracture and channel system is formed before the closure occurs.

Propped fracture with high effective surface area

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Kuala Lumpur, Malaysia

Keng Seng Chan