电缆地层测试取样模式研究

Study on Wireline Formation Test Sampling Mode

稠油、低渗透性、高压差等疑难地层及其取样纯度和泵抽时间是电缆地层测试目前面临的主要问题。应用斯伦贝谢公司研制的聚焦探针,改进传统探针的取样模式,在很大程度上解决了这些问题。以多口井的成功应用为基础,分析研究聚焦探针的取样模式和技术特性,总结其应用效果和适用范围,并提出合理化建议,对电缆地层测试技术在中国的应用和发展具有一定促进作用。

The difficult reservoirs with heavy oil, low permeability, high differential pressure, etc. , and their sampling purity and pump time are the main problems in the wireline formation test. These problems are largely solved by applying Schlurnberger＇ s newly designed focused probe and improving the sampling mode of conventional probe. Based on the successful log appli- cations in a number of wells, the sampling mode and technical characteristics of focused probe are studied and its log application results and adaptability are summarized, which may facilitate its applications in China and development of wireline formation test technology.