Abstract: Disclosed herein are systems and methods for calibrating seismic data using seismic attribute pairs such as amplitude versus offset (AVO) attributes. In one embodiment, a method includes: receiving traces from a seismic survey that covers a volume; determining a pair of seismic attributes for each of a plurality of positions within the volume (“survey pairs”); deriving pairs of seismic attributes from a source independent of the survey (“independent pairs”); calculating a rotation angle and one or more scale factors that calibrate the survey pairs relative to the independent pairs; and calibrating the traces with the rotation angle and the one or more scale factors. Thus, for example, the overall amplitude and relative AVO of pre-stack seismic gathers can be calibrated to match that of synthetic gathers by matching crossplots of AVO attributes generated from each dataset.

Abstract: Disclosed herein are systems and methods for calibrating seismic data using seismic attribute pairs such as amplitude versus offset (AVO) attributes. In one embodiment, a method comprises: receiving traces from a seismic survey that covers a volume; determining a pair of seismic attributes for each of a plurality of positions within the volume (“survey pairs”); deriving pairs of seismic attributes from a source independent of the survey (“independent pairs”); calculating a rotation angle and one or more scale factors that calibrate the survey pairs relative to the independent pairs; and calibrating the traces with the rotation angle and the one or more scale factors. Thus, for example, the overall amplitude and relative AVO of pre-stack seismic gathers can be calibrated to match that of synthetic gathers by matching crossplots of AVO attributes generated from each dataset.

Abstract: Systems and methods of reservoir fracture characterization are disclosed. In one embodiment, the method includes: 1) obtaining seismic traces; 2) combining seismic traces into gathers that reveal acoustic reflectivity as a function of offset, azimuth, and position; 3) measuring reflection anisotropy as a function of position; 4) determining a relationship between reflection anisotropy and fracture intensity measurements at specific positions; and 5) applying the relationship to reflection anisotropy measurements to create a set of fracture intensity measurements at regularly-spaced positions.

Abstract: A vehicle control unit is disclosed which can be coupled between a tachometer sensor and an electronic ignition system on a vehicle. The unit is also coupled to a speedometer sensor to measure the vehicle's speed. The vehicle control unit limits the vehicle speed by monitoring the tachometer signal from the tachometer sensor and passing the tachometer signal to the ignition system if the engine speed is within predetermined limits. The tachometer signal is a pulse train which is used by the electronic ignition system to determine ignition timing. The vehicle control unit limits both vehicle speed and engine speed by disconnecting pulses from the tachometer sensor and generating time-delayed pulses of its own to delay the combustion of fuel until after the instance of maximum fuel compression, thereby reducing engine power when the vehicle or engine speeds exceed predetermined limits.

Abstract: Systems and methods of reservoir fracture characterization are disclosed. In one embodiment, the method comprises: 1) obtaining seismic traces; 2) combining seismic traces into gathers that reveal acoustic reflectivity as a function of offset, azimuth, and position; 3) measuring reflection anisotropy as a function of position; 4) determining a relationship between reflection anisotropy and fracture intensity measurements at specific positions; and 5) applying the relationship to reflection anisotropy measurements to create a set of fracture intensity measurements at regularly-spaced positions.

Abstract: A marine fairing combining the benefits of flexible and rigid fairings. The preferred fairing is made from a material that makes the fairing rigid enough to achieve the superior hydrodynamic performance of rigid fairings, but flexible enough to resist permanent deformation when stored on cables that are reeled onto drums for storage. The material preferably is BASF Elastollan® 1185A, 1995A or other suitable polyether-based thermoplastic polyurethane.

Abstract: A protective casing for a three-way electrical connection comprises a cover and two lower pieces. Each lower piece preferably includes a protruding key and a key slot. The two lower pieces mate with one another with the protruding key of each lower piece engaging the key slot of the other lower piece. The keys and slots generally extend a length of the lower pieces and thus mating the lower pieces together includes engaging the keys and slots and sliding one lower piece along an axis relative to the other lower piece. Preferably, the lower pieces are substantially identical. In contrast to conventional tee connection casings, the lower pieces of the preferred embodiment can be mated together without disconnecting any conductors from the three-way electrical connection. Similarly, the protective casing can be removed and replaced with a new casing without disconnecting any electrical connections.

Abstract: A seismic system, Seismic Mobile Information & Control System (Seis-MICS) comprising field resources, satellite resources, and office resources. The field resources include various personnel, equipment, and vehicles located in the general vicinity of the seismic project. The field resources include transceivers permitting various of the field resources to communicate directly, or indirectly, to the office resources via one or more satellites. The office resources include satellite earth hubs/stations, a server-side hardware, software, and data store, and user workstations. The seismic system advantageously facilitates real or near real time transmission of data between the field and office environment, thereby providing an efficient seismic operation.

Abstract: A seismic system, Seismic Mobile Information & Control System (Seis-MICS) comprising field resources, satellite resources, and office resources. The field resources include various personnel, equipment, and vehicles located in the general vicinity of the seismic project. The field resources include transceivers permitting various of the field resources to communicate directly, or indirectly, to the office resources via one or more satellites. The office resources include satellite earth hubs/stations, a server-side hardware, software, and data store, and user workstations. The seismic system advantageously facilitates real or near real time transmission of data between the field and office environment, thereby providing an efficient seismic operation.

Abstract: A vehicle control unit is disclosed which can be coupled between a tachometer sensor and an electronic ignition system on a vehicle. The unit is also coupled to a speedometer sensor to measure the vehicle's speed. The vehicle control unit limits the vehicle speed by modifying the tachometer signal from the tachometer sensor and providing the modified tachometer signal to the ignition system. The tachometer signal is a pulse train which is used by the electronic ignition system to determine ignition timing. The vehicle control unit limits both ground speed and engine speed by suppressing pulses from the original tachometer signal to prevent the combustion of fuel and thereby reduce engine power when the ground or engine speeds exceed predetermined limits. The vehicle control unit is microcontroller-based and preferably includes a logging function and an acceleration sensor. The microcontroller is coupled to the acceleration sensor to detect the peak accelerations experienced by the vehicle.

Abstract: A battery charger system providing increased reliability over conventional chargers includes one or more charging modules coupled to a central controller module. Each charging module is cable of charging one or two batteries and includes control logic that controls the charging current provided to each battery. Each charging module is capable of charging the associated batteries using a pre-programmed, selectable charging protocol. The control logic included in each of the charging module provides a “first level of intelligence” for charging batteries. The controller module provides a “second level of intelligence” that generally operates in conjunction with the first level of intelligence provided by the charging modules. The second level of intelligence provided by the controller module individually enables and disables charging to a particular battery by an associated charging module.