地形风险识别与分级技术在山地地震采集施工中的应用

Application of Terrain Risk Identification and Classification Technology in Mountain Seismic Acquisition Construction

随着我国石油勘探程度的不断加深,地震勘探大规模进入高难山区,野外采集施工作业风险越来越大,对安全、高效施工的要求越来越高。如何对地形风险因素进行分析、评价以及如何对其进行最大程度的规避,是本文写作的主要目的。本文介绍了利用数字高程模型(DEM)数据,提取地形起伏度和不同方向坡度共同约束形成地形风险分级的技术成果。在四川盆地高难山地形成4级地形风险分级,西北地区高难山地形成六级分级,从而指导山地地震野外采集施工,降低施工作业风险。

With the continuous deepening of petroleum exploration in my country and large-scale seismic exploration has entered high-difficulty mountainous areas, the risks of field acquisition and con-struction operations are increasing, and the requirements for safe and efficient construction are getting higher and higher. How to analyze and evaluate terrain risk factors and how to avoid them to the greatest extent is the main purpose of this article. This article introduces the technical results of using digital elevation model (DEM) data to extract terrain undulations and slopes in different directions to jointly constrain the formation of terrain risk classification. A four-level terrain risk classification is formed in the high-difficult mountains in the Sichuan Basin, and a six-level classification is formed in the high-difficult mountains in the northwest, so as to guide the mountain seismic field acquisition and construction and reduce the risk of construction operations.