| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 181108000 | Seismic source and detector | 12 |
| 20120037443 | SEISMIC TRANSDUCERS HAVING REDUCED SURFACE AREA BASEPLATES AND METHODS OF USE - Methods and systems are provided for inducing seismic energy waves in a subterranean formation. More particularly, improved seismic transducers are provided that comprise enhanced baseplates. Baseplates are provided that comprise an intermediate plate and a plurality of contact plates secured to the underside of the intermediate plate. The contact plates provide a surface area for engagement with the ground surface that is more limited than the lower surface area of the intermediate plate. Advantages of such baseplate enhancements include, but are not limited to, a reduction of baseplate harmonics or ringing and enhanced baseplate strength so as to reduce baseplate fatigue or failure, a reduction of baseplate flexure. These advantages ultimately translate to improved seismic surveys, having higher resolution of the formations surveyed and resulting in surveys reaching greater depths. | 02-16-2012 |
| 20120298440 | EXCITATION DEVICE AND METHOD FOR DOWNHOLE SEISMIC TESTING USING THE SAME - An excitation device for downhole seismic testing, includes an excitation hammer, a holding arm connected at one end thereof to the excitation hammer to allow the excitation hammer to rotate about the other end thereof, a support post having the other end of the holding arm rotatably coupled to an upper end thereof to support the excitation hammer and the holding arm at a certain height, and an excitation source configured to allow the support post to stand upright on the upper side thereof and which generates a seismic wave when struck by the rotated excitation hammer. The support post is formed at a lower end thereof with a securing section detachably inserted into a groove for the support post formed on the upper side of the excitation source such that the support post, the holding arm, the excitation hammer and the excitation source can be separated from each other. | 11-29-2012 |
| 20130284533 | EXCITATION DEVICE AND METHOD FOR DOWNHOLE SEISMIC TESTING USING THE SAME - An excitation device for downhole seismic testing, includes an excitation hammer, a holding arm connected at one end thereof to the excitation hammer to allow the excitation hammer to rotate about the other end thereof, a support post having the other end of the holding arm rotatably coupled to an upper end thereof to support the excitation hammer and the holding arm at a certain height, and an excitation source configured to allow the support post to stand upright on the upper side thereof and which generates a seismic wave when struck by the rotated excitation hammer. The support post is formed at a lower end thereof with a securing section detachably inserted into a groove for the support post formed on the upper side of the excitation source such that the support post, the holding arm, the excitation hammer and the excitation source can be separated from each other. | 10-31-2013 |
| 20140151147 | METHOD AND APPARATUS FOR MEASURING SEISMIC PARAMETERS OF A SEISMIC VIBRATOR - Apparatus and techniques for measuring seismic parameters, such as ground force, of a seismic vibrator used for generating seismic signals through a geological formation are provided. The seismic vibrator has a base plate positionable adjacent a ground surface of the geological formation. A sensor pad may be provided with an optical cable positionable between the base plate of the seismic vibrator and the ground surface of the geological formation, a laser for passing a light through the optical cable, and a detector for detecting disturbances in the laser light whereby a ground force applied to the ground surface may be determined. | 06-05-2014 |
| 20140291064 | EARTHQUAKE MONITORING SENSOR AND EARTHQUAKE MONITORING SYSTEM INCLUDING THE SAME - An earthquake monitoring sensor based on an asymmetrical shape of facilities and an earthquake monitoring system including the same. The earthquake monitoring sensor is provided to facilities having an asymmetrical shape vulnerable to an earthquake and provides a rapid earthquake response with regard to an earthquake-vulnerable direction of the facilities, thereby enabling establishment of effective countermeasures to the earthquake. The earthquake monitoring sensor for facilities includes a north-to-south component vibration measuring device sensing a north-to-south direction vibration signal; and an east-to-west component vibration measuring device sensing an east-to-west direction vibration signal, wherein a vibration signal sensing direction of one of the north-to-south component vibration measuring device and the east-to-west component vibration measuring device is set to match a vulnerable direction of corresponding facilities, and monitoring data output from the vibration measuring device set to match the vulnerable direction is provided as vulnerable direction data of the corresponding facilities. | 10-02-2014 |
| 20150041242 | Low Frequency Seismic Acquisition Using A Counter Rotating Eccentric Mass Vibrator - Method for seismic prospecting using counter-rotating ( | 02-12-2015 |
| 181110000 | Underwater | 3 |
| 20120318604 | WATER MOTION POWERED SEISMIC ENERGY SOURCE AND METHOD FOR SEISMIC SURVEYING THEREWITH - A seismic energy source includes an inlet aperture and an inlet pipe in fluid communication with an outlet of the inlet aperture at an inlet end of the inlet pipe. The inlet pipe is in fluid communication with an accumulator at an outlet end of the inlet pipe. An outlet pipe is in fluid communication with the accumulator at an inlet end of the outlet pipe and is connected to an outlet valve at an outlet end of the outlet pipe. The outlet valve is actuated by fluid pressure in the outlet pipe. An actuation pressure of the valve, and diameter, length and material properties of the outlet pipe are selected to cause a reflected water pressure wave resulting from closure of the valve to travel within the outlet pipe at a selected velocity. Motion of the seismic source through the water provides water pressure to operate the source. | 12-20-2012 |
| 20130098704 | SEISMIC SOURCE WITH POSITIVE REFLECTION PLATE AND METHOD - A marine source sub-array and method for generating a pressure wave in a body of water. The marine source sub-array includes a float configured to float in the body of water; base plates connected to the float through cables; plural individual source elements connected to the base plates and configured to generate pressure waves underwater; and a coverage plate located between the plural individual source elements and the float. The coverage plate has a surface area larger than a surface area of the float. | 04-25-2013 |
| 20140238771 | MARINE ACOUSTIC PROJECTOR PISTON FOR VIBRATOR SOURCE ELEMENT AND METHOD - There is a method for determining a shape and structure of a piston for a vibratory seismic source element. The method includes generating a cost function J that is function of plural variables; applying plural constraints to the cost function J; calculating a piston shape and piston design that fulfills the plural constraints; and modifying the calculated piston shape and piston design based on practical implementations of the vibratory source element. | 08-28-2014 |
| 181112000 | Plural detectors | 3 |
| 20090065289 | Particle motion sensor mounting for marine seismic sensor streamers - A marine seismic streamer includes a jacket substantially covering an exterior of the streamer. At least one strength member is disposed along the length of the jacket. A sensor mount is coupled to the strength member. At least one particle motion sensor is suspended within the sensor mount at a selected location along the jacket. The at least one particle motion sensor is suspended in the jacket by at least one biasing device. A mass of the particle motion sensor and a force rate of the biasing device are selected such that a resonant frequency of the particle motion sensor within the sensor jacket is within a predetermined range. The sensor mount is configured such that motion of the jacket, the sensor mount and the strength member is substantially isolated from the particle motion sensor. | 03-12-2009 |
| 20110272206 | MATRIX GROUND FORCE MEASUREMENT OF SEISMIC TRANSDUCERS AND METHODS OF USE - Methods and systems are provided for inducing seismic vibrations into an elastic medium such as subterranean formations. The methods and systems utilize seismic transducers having a sensor matrix for measurement of baseplate force distributions. Certain embodiments include a sensor matrix that is configured to measure a distribution of discrete force measurements across the surface area of the baseplate. Advantages of including such sensor matrices include a more accurate prediction of seismic transducer energy output. That is, these measurements can be used as feedback to adjust the operation of the seismic transducer. Additionally, these force measurements may be used to provide for a better interpretation of gathered seismic data. These advantages ultimately translate to improved seismic surveys, having higher resolution of the formations surveyed and reaching greater depths. | 11-10-2011 |
| 20140305732 | High-Speed Image Monitoring of Baseplate Movement in A Vibrator - Systems, sensors, and methods for high-speed image monitoring of baseplate movement in a vibrator. The systems can include a baseplate defined by an area, disposable at a ground surface to direct a seismic force into the ground surface. The system can include a reaction mass coupled to and positioned above the baseplate to generate the seismic force at the baseplate. The system can include an actuator assembly coupled to the reaction mass to vibrate the reaction mass, as well as high-speed image units directed at the area of the baseplate. The high-speed image units can include photo detectors to sense a distribution of acceleration across the area of the baseplate, and a light source emit light to be sensed by the photo detectors. The system can also include a controller coupled to the actuator assembly, that drives the actuator assembly. | 10-16-2014 |
