The Research Of Surface Investigation Technology The Waves Producing On The Ground And Receiving In The Well

Precise surface structure information directly affects the quality of seismic dataacquisition, but also directly affect the subsequent seismic data processing. Surface surveymethod is more commonly used method of micro and small refraction method of logging onthe accuracy of the former than the latter investigation, therefore, micro logging method iswidely used and surface survey project. In uphole law sent birth many ways, such asshuangjing uphole method, three-component ground receiving method, ground wells tostimulate multi-level reception method. Shuangjing uphole France each measuring point tomulti-well drilling a geophone, often lost downhole geophone, the need to increase certainconstruction costs; ground three components of the received law offset closely with thecalculation accuracy, reasonable offset from design more difficult, the accuracy is not highenough; currently more popular and high accuracy is excited ground receiving well upholemethod, the results of the design as the excitation depth, surface statics calculation work isneeded to fully meet, but can not be directly used to strike the surface absorption andattenuation parameters, so you must study the ground to stimulate micro logging methodswells received. Ground wells to stimulate multi-level reception method is the most direct wayto the observation surface absorption and attenuation parameters, although the differencebetween the detector and the wall coupling exists, have an impact on the calculation accuracy,but pay attention to the construction process and the appropriate regional laid down, etc. thismethod can achieve better results, not only that, the law also can completely replaceconventional micro logging, complete the previous surface survey tasks.Aiming to stimulate wells multistage ground uphole receiver surface survey technologydifficulties, research into the complex surface hole drilling technology, and the Field test dataanalysis, the calculation method of surface attenuation parameters, concludes surfaceattenuation compensation, after the near-surface seismic data acquisition attenuationcompensation process, the substantial increase in the band width of the seismic data toenhance the precision of thin interbedded reservoir prediction lay a solid foundation.