对塔里木盆地低渗砂岩层DST测试工作制度的一点想法  

Some Opinions about DST Flow Regime for Low Permeable Sand Stone Formation in Tarim Basin

作　　者：田新建[1] 张永灵[1] 雷胜林[1] 

机构地区：[1]塔里木石油勘探开发指挥部试油处,新疆库尔勒市841000

出　　处：《油气井测试》1998年第4期70-72,76,共4页Well Testing

摘　　要：塔里木盆地多数储层为渗透率小于5×10－3μm2的低渗和特低渗层，其测试一般采用传统的两开两关工作制度。通过实例分析说明传统的测试工作制度不适合低渗砂岩层，尤其是二关时间分配不合理。依据测试结果分析，推荐适合塔里木盆地低渗砂岩层DST测试的工作制度：一开15～20min左右，一关3～4h，二开24h左右，二关8h左右。Most of the formations in Tarim Basin are low and extremely low permeability formations with permeability less than 5 ×10-3μm2, usually drill stem test operation adopts conventional flow regime of 'two opening and two shut-in '. The analysis of actual examples proves that conventional DST flow regime is not applicable to low permeable sand stone formations,especially the time distributed for second shut-in is not reasonable. According to test results, this paper analyses and recommends the following flow regime: first opening: 15 ~ 200 min, first shutin 3~4 h, second opening: about 24 h, second shut-in: about 8 h.

关 键 词：塔里木盆地 低渗透储集层 钻柱地层测试 工艺设计 

分 类 号：TE3[石油与天然气工程—油气田开发工程]