测井技术在石膏矿勘探中的应用

在石膏矿勘探孔中使用聚焦电阻率、密度(长、短源距伽玛伽玛)、岩性密度(散射伽玛能谱———光电吸收截面指数Pe)、中子孔隙度、自然伽玛、声波速度、井径和井斜等测井方法,可以精确划分出石膏矿层的深度、厚度、结构,并能区分出石膏和硬石膏,判定石膏含量。在生产实践中,利用测井方法解释石膏矿层,取得了非常明显的地质效果,为石膏矿勘探开发提供了可靠的依据。

Application of Logging Technology in The Exploration of Gypsum Ore

Utilization on guard electrode l ogging, density log (long and short spacing gamma-gamma log), litho-density log (scat tering gamma spectrum-photoelectric absor ption cross section index Pe), neutron poro sity, gamma-ray log, sonic velocity, calip er log, drift and so forth logging methods i n the prospecting hole of gypsum ore, may be divided exactly depth, thickness and textu re of gypsum bed, and can be distinguished g ypsum and anhydrite, and judged content of gypsum. In the productive practice, use log ging method to interpret ore bed of gypsum, obtained very clear geological effect, and provide reliable basis for exploration and exploitation of gypsum ore.