| PDF: | |
| Time: | 2007 |
| Journal: | Journal of Jilin University (Earth Science Edition) |
| Volumn: | 37 |
| Issue: | 4 |
| Pages: | 727-733 |
| Type: | Other |
| Author: | Ping Shu,Yanming Qu,Guojun Wang,Rixin Ding,Xingbo Ai,Xueyan Ji,Huafeng Tang,Weihua Bian,Pujun Wang |
Abstract: | The authors mainly focus on the description of various spaces in the volcanic reservoir and their response to some geophysical detection methods. Eleven types of volcanic rocks are found to be effective gas reservoirs in the Yingcheng Formation of the Songliao Basin. Association of different pores and fractures forms the reservoirs’ space in different rocks. The fracture density and their opening status controll the permeability and throughput of volcanic reservoirs and change along with the variation in lithology and lightfaces. These fractures are of multi-evolution stages. Micro-resistivity scan logging (MRSL) can be used to identify the length and density of fractures in volcanic reservoirs. The apparent porosity is calculated by using the results of MRSL. Fracture detection at pre-stack helps to identify the density and direction of fractures semi-quantitatively. These results are proven to be helpful in making well development arrangement and underground artificial fracturing. |