复杂地区地震勘探高效无桩号施工采集技术

High efficiency stakeless technology for seismic acquisition in complex areas

目前,地震勘探项目越来越多的采用高效采集模式,使施工效率较以往有很大提高。无桩号施工是可控震源高效采集的主要作业方案,可以有效地提高整体的地震勘探效率。无桩号施工改进了操作程序,通过震源自主导航,免去地面设置激发点标记的工序,在震源激发同时记录高精度的定位信息,不仅提升施工效率,且保证了记录数据的准确性。如何在复杂地表、障碍物密集区域实施无桩号施工仍是高效采集项目的一个难点。本文通过对中东某高效采集项目的介绍,提出了一套在复杂地区实现无桩号施工的具体方案,包括地理信息数据库的建立、精细踏勘、炮点偏移设计、定位数据质量控制等多方面,为未来在复杂地区的无桩号施工提供了参考。

Nowadays,due to high-production acquisition is conducted in most ofvibroseis projects,operation efficiency has distinctly increased than before.Stakeless operation is the main solution for vibroseis high-production project,which increases efficiency entirely.By the improved operation method of stakeless,vibrator can be navigated by GNSS equipment,not by flags on ground,during operation high accuracy positioning data is recorded while shooting.This innovative method ensures the integrity of seismic data and higher the efficiency.Nevertheless,it is challenging forstakeless in complex area,such as obstacle gathering zone.The article introduces the high-production project in the Middle East and presents a stakeless operation resolution in complex area,including establishing geodatabase,scouting,offset design of source points,quality control of positioning data,to provide a reference for the coming stakeless operation in complex area.