柴达木盆地复杂山地采集技术及效果

柴达木盆地复杂山地由于受复杂地表条件和地下构造的影响,地震资料信噪比较低,地震勘探难度较大,是多年来勘探的地震空白区或资料空白区,直接影响了该区勘探潜力评价及有利勘探目标的选择。随着盆地地震勘探的不断深入,在总结、分析以往资料和勘探经验的基础上,在该区进行了山地地震攻关,通过针对目标的观测系统设计、精细的表层结构调查、科学的采集参数试验、选岩选层的井深逐点设计及其他相应的采集技术措施,形成了一系列比较成熟的复杂山地勘探技术,在野外采集资料品质方面取得了突破性的进展,为复杂山地的油气勘探提供了强有力的技术手段。

Acquisition Technique and Its Effect of Complex Mountanious Region in Qaidam Basin

The signal-to-noise of seismic data is relatively low for complex mountanious region in Qaidam Basin affected by complicated surface condition and underground structure, as result of that, this region is blank of seismic exploration or seismic data, directly influencing on the exploration potential evaluation and favorable targets selection. With the continuously expanding of seismic exploration in the basin, it is carried out to tackle key problem of mountainous seismic technology, based on the old data analysis and exploration experience,through implementing a series of measures including observation system design aimed at the target,fine investigation for surface structure,sampled parameters test , well depth design by selecting rock and bed and other acquisition techniques, a series of more mature exploration technique suited for complex mountainous region has been developed and the break through has been made in quality of data acquired field, providing the strong technique support for petroleum exploration in complex mountainous region.