FMI成像测井在川东地区飞仙关组的地质应用

川东地区飞仙关组地质条件复杂,储层非均质性强,储集空间类型多样,沉积特征和储集性能差异十分明显。同时,由于地层高含H2S;常重泥浆钻井。泥浆侵入储层深;常规测井技术不易识别地质特征,应用效果受到局限,常误判和漏划储层。在研究川东地区飞仙关组储渗空间类型及特征的基础上,研究适合本地区FMI测井的地质应用技术,应用FMI资料可以准确的识别真假裂缝,判断地应力的大小和方向,识别岩石构造等。

Geological Application of FMI Imaging Well Logging in Feixianguan Formation in East Sichuan Basin

The geological conditions of Feixianguan formation are complex in east Sichuan basin in which strong heterogeneous is presented in reser- voir space types,and there is a big difference between deposition characteristics and fluid accommodation capacities.At the same time, drilling mud of high density is usually applied because of high content of H2S in the reservoir,which leads to deep invasion of mud filtrate. As a result,conventional well logging techniques meet difficulties in identification of the geological characteristics,which leads to incorrect formation identification and limitation to these techniques.Based on the study of the reservoir types and space characteristics in Feixian- guan formation,the geological application of FMI imaging well logging which is suitable for Feixianguan formation is researched.FMI data can he applied to the identification of artificial fractures,formation rock structures and evaluation of the orientation of formation stress.