Class / Patent application number | Description | Number of patent applications / Date published |
367018000 | Fluid variation | 9 |
20120120759 | IMMERSION CONTROL METHOD AND APPARATUS FOR A STATIONARY SEISMIC STREAMER - A seismic streamer incorporates apparatus for controlling its depth of immersion for modifying and maintaining its degree of immersion, wherein, the streamer being designed for stationary use and including a power supply network, the immersion control apparatus comprises a plurality of variable buoyancy ballasts connected to the power supply network of the streamer and installed at regular intervals along the seismic streamer and each associated with a microcontroller for at least controlling buoyancy of the corresponding ballast, a plurality of pressure sensors also installed at regular intervals along the streamer, at least one receiver for one or more desired value instructions, a bus for distributing the one or more desired value instructions to the ballasts, the microcontroller associated with a given ballasts being adapted to receive at least signals originating from at least one pressure sensor located in the proximity of the ballast and instruction signals originating from the receiver for instructions, being adapted to calculate a control signal for modifying the buoyancy of the ballast as a function of at least the signals received and being adapted to send this control signal at least to the corresponding ballast. | 05-17-2012 |
20130028046 | METHOD AND SYSTEM OF DEPTH TRIGGERS FOR MARINE GEOPHYSICAL SURVEY CABLE RETRIEVER SYSTEMS - Depth triggers for marine geophysical survey cable retriever systems. At least some of the illustrative embodiments include causing a submerged geophysical survey cable to surface. In some cases, the causing the cable to surface may include: fracturing a frangible link wherein the frangible link, before the fracturing, affixes position of a piston within a cylinder bore of a housing coupled to the geophysical survey cable, and the fracturing of the frangible link responsive to pressure exerted on a face of the piston as the geophysical survey cable reaches or exceeds a predetermined depth; moving the piston within the cylinder bore; and deploying a mechanism that makes the geophysical survey cable more positively buoyant. | 01-31-2013 |
20130329519 | ACTIVELY CONTROLLED BUOY BASED MARINE SEISMIC SURVEY SYSTEM AND METHOD - A buoy for recording seismic signals while underwater. The buoy includes a body; a buoyancy system configured to control a buoyancy of the body to descend to a predetermined depth (H | 12-12-2013 |
20140056100 | BUOY BASED MARINE SEISMIC SURVEY SYSTEM AND METHOD - A seismic survey system for recording seismic data underwater. The system includes first plural buoys configured to descend to a first predetermined depth (H | 02-27-2014 |
20140169125 | Seismic Data Acquisition System Comprising at Least One Towfish Tail Device Connectable to a Tail of a Towed Acoustic Linear Antenna - A system includes a plurality of streamers (towed acoustic linear antennas), each cooperating with a set of at least one depth control element having a determined diving capability enabling to immerse the tail of the streamer. At least one given streamer has a tail connected to a tail device which is a towfish device including a flotation body and a satellite navigation system receiver including an antenna fixed on the flotation body. The buoyancy of the flotation body is selected such the set of at least one depth control element controls the depth of the tail device. The tail device includes at least one inline module, connectable via a fixed link to the tail of the streamer, and a frame element, to which is fastened the flotation body via a fixed link and which can freely rotate around the at least one inline module. | 06-19-2014 |
20140204708 | SEISMIC DATA ACQUISITION USING WATER VEHICLES - A seismic acquisition system. The seismic acquisition system may include at least one unmanned water vehicle. The seismic acquisition system may also include at least one seismic streamer coupled to the at least one unmanned water vehicle, where the at least one seismic streamer has one or more seismic sensors coupled thereto for recording seismic data in a survey area. The seismic acquisition system may further include a buoyancy compensation mechanism coupled to the at least one seismic streamer, where the buoyancy compensation mechanism is configured to orient the at least one seismic streamer between a generally vertical direction and a generally horizontal direction through a water column. | 07-24-2014 |
20140241122 | ACTIVATION ELECTRONICS AND METHOD FOR SEISMIC EQUIPMENT RECOVERY DEVICE - An activation module to be used in a seismic equipment recovery device. The activation module includes a processor; a pressure transducer configured to measure a pressure of the ambient and provide the measured pressure to the processor; a memory connected to the processor and configured to store information related to a pressure or depth threshold; and a communication unit connected to the memory and configured to exchange information with an external device. The processor is configured to send a deployment instruction to an inflation mechanism to inflate a flotation bag based on the measured pressure and the stored information. | 08-28-2014 |
20140241123 | SYSTEM AND METHOD FOR LOCATING AND POSITIONING SEISMIC SOURCE - A source array generates seismic waves in water during a marine seismic survey. The source array includes a first sub-array including plural source elements; plural acoustic transceivers distributed along the first sub-array; a positioning system; a primary position control device configured to control a position of the first sub-array; and a secondary position control system configured to adjust a depth of the first sub-array. | 08-28-2014 |
20150362612 | SYSTEM AND METHOD OF A BUOYANT TAIL SECTION OF A GEOPHYSICAL STREAMER - Buoyant tail section of a geophysical streamer. At least some of the example embodiments are methods of performing a geophysical survey in a marine environment, the method including: towing an active section of a geophysical streamer in the marine environment, the active section having a buoyancy; towing a tail section, the tail section coupled to a distal end of the active section, the towing of the tail section by way of the active section, and at least a portion of the tail section having a buoyancy that is both positively buoyant and greater than buoyancy of the active section; towing a tail buoy in the marine environment, the tail buoy coupled to a distal end of the tail section, and the towing of the tail buoy by way of the tail section; and gathering geophysical survey data by way of the active section. | 12-17-2015 |