野外VSP数据采集处理与资料质量控制研究

Research on Field VSP Data Acquisition and Quality Control

垂直地震剖面法(VSP)野外数据的采集是影响VSP资料质量的重要因素之一,为满足实际生产对VSP资料日益增高的要求,必须从源头控制好现场采集资料的质量。质量控制是一个相对复杂而又精细的工作。文章以中海油服使用的Geowavs多级数字阵列VSP采集系统做常规零偏VSP作业为例,系统地阐述了VSP野外数据采集与现场资料质量控制方法和要点。阐述了从观测系统的设计,到施工方案、地面采集系统、井下仪器、震源系统、近场子波检波器、施工效率和施工成本等方面与VSP野外数据采集与现场资料质量控制之间的关系。

The acquisition method of vertical seismic profile(VSP) field data is one of the most important factors affecting the quality of VSP data. In order to meet the increasing requirements for VSP data in actual production, the quality of field data must be controlled from the initial acquisition step. Quality control is a relatively complex and delicate work. This paper takes the Geowavs multi-stage digital array VSP acquisition system used by COSL as an example for conventional zero-offset VSP operation, and systematically expounds the methods and key points of VSP field data acquisition and field data quality control. The relationship between the design of the observation system, the operation plan, the surface acquisition system, the downhole tools, the seismic source system, the near-field wavelet detector, the operation efficiency and the construction cost, and the VSP field data acquisition and field data quality control are expounded.