Statoil Petroleum As

Schlumberger Technology Corporation

Equinor Energy As

Schlumberger Canada Limited

Mark Thompson

Harald Westerdahl

Lasse Amundsen

David McCormick

Robert John Godfrey

Jonathan Paul Ingham

Hartmut Hubertus Schütt

Richard Tøndel

Hartmut Hubertus Schutt

Richard Tondel

David Mccormick

A method for use in surveying a subsurface region beneath a body of water by detecting compressional, P, waves propagating through the body of water includes locating one or more sensor systems in the water at or close to the subsurface region, using the or each sensor system to detect P waves in the water, and translating all or a portion of the data representing the detected P waves to a higher level above the subsurface region. In the method, the effects of S waves, propagating in the subsurface and converted at the water/subsurface interface into P waves propagating in the water or along the seabed interface, in the translated data is reduced.

P/S wave measurement and compensation

A method for use in surveying a subsurface region beneath a body of water by detecting S waves propagating through the subsurface region. The method comprises using a first sensor configuration to detect mixed S and P waves on or in the subsurface region, using a second sensor configuration located on or in relatively close proximity to the subsurface region to detect P waves in the water, and using the P waves detected in the water to compensate the detected mixed S and P waves, and thereby attenuate the effects of P waves in the mixed S and P waves.

A methodology and system promote hydrocarbon production from a reservoir using steam assisted gravity drainage. The technique comprises deploying sensors in a subsurface environment containing the reservoir. The sensors are used to obtain data on properties related to a steam assisted gravity drainage region of the reservoir. Based on the data collected from the sensors, the amount of steam injected into areas of the reservoir may be adjusted to facilitate, e.g., optimize, production of hydrocarbons.

Monitoring of steam chamber growth

An apparatus for conducting a marine seismic survey is disclosed. The apparatus includes a plurality of sensors configured to measure water pressure, a horizontal derivative of the pressure in two orthogonal directions, vertical particle velocity or acceleration of the water, and a horizontal derivative of the vertical particle velocity or acceleration in two orthogonal directions.

Apparatus for marine seismic survey

A method of providing seismic data (such as marine seismic data). A seismic source is actuated at a plurality of source locations (S, S). For each source location, a multicomponent seismic measurement is performed at least one receiver location (S). A reconstructing method is applied to each multicomponent measurement to obtain additional data corresponding to source locations additional to the source locations at which the source was actuated (S). The additional data are output and/or used (S).

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Trondheim, Norway

Mark Thompson