一种新型节点采集系统试验

国际市场原油价格的长期持续低迷,使得油公司勘探投资锐减,物探公司勘探作业普遍采取轻资产、低成本、高效率运作模式.节点采集系统以其低成本、轻便、灵活、高效的优势成为物探公司野外地震采集施工的首选.针对研制的新型节点采集系统,给出了其技术指标,并与行业内3种典型节点采集系统进行了对比.在中国南方某山地环境将其与一种商用节点...

A field trial of a novel nodal acquisition system

The persisting low price of crude oil in the international market results in decreased investments into exploration by the oil corporations.This situation induces the geophysical exploration companies,both domestically and abroad,to adopt light-asset,low-cost,and efficient modes of operation.Nodal acquisition systems have become the first choice for geophysical exploration companies worldwide because of their low cost,portability,flexibility,and high efficiency.In this study,a newly developed nodal system was presented;its technical specifications were described,and its performance was compared with that of three typical industrial nodal system.To this aim,a field trail was carried out to compare the novel nodal system with a commercial nodal system and a cabled acquisition system in a mountain environment in South China.Three systems of two-dimensional geometries were laid out side by side.The trail results showed that the two nodal systems were more efficient than the cabled system and proved suitable for the complex mountain terrain.The data acquired by the three systems were then processed using the same parameters and processing steps.The novel nodal system yielded results that were consistent with those of the other two systems in terms of spectrum characteristics and signal-to-noise ratio.The two nodal systems,having a built-in single high-sensitivity moving coil geophone core,showed the same imaging capability as the cabled system having two series of external geophones.It was concluded that the newly developed nodal acquisition system meets the requirements in terms of suitability for complex surfaces,high density,and high coverage,and has a good potential for industrial application in the future.