低渗油藏早期试井技术研究与应用

由于低渗透、特低渗透油气田有大量的压力测试资料在长时间测试后仍出现不了径向流,针对这一难题,研究了早期井底压力在时间较短的情形,采用小信号提取技术,研究出了早期试井分析技术并制作了相应的早期分析图版,有效地解决了这一难题,可明显缩短测试时间,尤其三迭系测试时间由原来的500 h可缩短至240 h,从而增加单生产时间,提高了单井年产量,经济效益明显。

Research and application of low permeability reservoir early well test technology

Because of low permeability,low permeability oil and gas fields have a lot of pressure test data is still there in a long time after the test can not radial flow,In response to this problem of early low bottom hole pressure at the time the case when using small-signal extraction technology, developed the earlier well test analysis and production of the early analysis of the corresponding plate,effectively solve the problem,can significantly reduce test time,especially the Triassic system test time can be shortened from 500 hours to 240 hours thereby increasing the single-production time and increase the annual output of single well,economic benefit.