Patent application number | Description | Published |
20080304357 | APPARATUS AND METHODS FOR CONTROLLING POSITION OF MARINE SEISMIC SOURCES - Apparatus and methods are described for remotely controlling position of marine seismic equipment. One apparatus comprises a source connected to a tow member; and an adjustment mechanism connected to the source and the tow member, the adjustment mechanism adapted to actively manipulate an angle of attack of the source. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. | 12-11-2008 |
20090092004 | MARINE SEISMIC STREAMER STEERING APPARATUS - Marine seismic streamer steering apparatus are described having an elongate body, at least a portion of which is positioned eccentric of a marine seismic streamer, the apparatus having stability features selected from: one or more lateral steering control surfaces providing a center of lift approximately through a vertical streamer axis; one or more buoyancy elements providing a center of buoyancy through the same or a different vertical axis approximately through the center of the streamer; and combinations thereof. The apparatus have improved stability and avoid heeling during use. | 04-09-2009 |
20090161485 | FORWARD LOOKING SYSTEMS AND METHODS FOR POSITIONING MARINE SEISMIC EQUPMENT - Systems and methods for positioning one or more spread elements of a marine seismic spread are described. One system comprises a seismic vessel-mounted acoustic Doppler current meter adapted to ascertain at least the horizontal component of the current velocity vector at a point ahead of the seismic vessel, and one or more controllers adapted to use the ascertained current velocity vector to control position of one or more seismic spread elements. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72( | 06-25-2009 |
20100170428 | INTERCONNECTING TOW MEMBERS OF A MARINE SEISMIC SYSTEM - A marine seismic system having a tow vessel; a first tow member connected to the tow vessel; a second tow member connected to the tow vessel; a first distance member having a first end connected to the first tow member and a second end connected to the second tow member; and a first attachment device connecting the first end to the first tow member, the first attachment member operational between an engaged position securing the first end of the distance member in a fixed position relative to the first tow member and a disengaged position permitting the first attachment device to move along a portion of the first tow member. | 07-08-2010 |
20100182871 | Steering System and Method for Use in Seismic Survey Applications - A technique facilitates the steering of seismic survey related devices during seismic survey applications. A steering device is provided with a wing pivotably mounted to a body via a pivot member. As the steering device is moved through a liquid, the liquid acts against the wing and creates a torque about the pivot member which varies according to the angle of attack of the steering device. The steering device further comprises at least one feature designed to change the torque that would otherwise act on the pivot member. | 07-22-2010 |
20100214869 | Apparatus and Methods for Controlling Position of Marine Seismic Sources - Apparatus and methods are described for remotely controlling position of marine seismic equipment. One apparatus comprises a source connected to a tow member; and an adjustment mechanism connected to the source and the tow member, the adjustment mechanism adapted to actively manipulate an angle of attack of the source. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. | 08-26-2010 |
20100254216 | Multiwing Surface Free Towing System - A technique for seismic surveying is presented in which a towed array, marine seismic spread, includes a plurality of streamers and a deflector system. The deflector system laterally spreads the seismic streamers, wherein at least one streamer in the spread is deflected using more than one deflector attached to the tow cable or streamer, and where the deflectors are not connected to a float on the sea surface. Other aspects of the technique include methods for towing such a spread and for controlling such a spread. Still other aspects include computing resources which may be used to perform the methods. | 10-07-2010 |
20110002193 | ACTIVE STEERING SYSTEMS AND METHODS FOR MARINE SEISMIC SOURCES - Systems and methods for automatic steering of marine seismic sources are described. One system comprises a marine seismic spread comprising a towing vessel and a seismic source, the seismic source comprising one or more source arrays each having a center of source array, each source array having one or more source strings; a seismic source deployment sub-system on the towing vessel, the sub-system controlled by a controller including a software module, the software module and the deployment sub-system adapted to control an inline distance between one of the centers of source array and a target coordinate. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, allowing a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b). | 01-06-2011 |
20110007602 | ACCURACY OF A COMPASS PROVIDED WITH A CARRIER STRUCTURE FOR USE IN SUBTERRANEAN SURVEYING - Techniques or mechanisms are provided to improve accuracy in determining headings and/or shapes of carrier structures based on measurements made by one or more compasses that are attached to or provided with the carrier structures. The carrier structures are used to carry survey receivers that detect survey signals affected by a subterranean structure. | 01-13-2011 |