低渗透储层应力敏感性实验评价方法研究
|
摘要
储层应力敏感性是指多孔介质的孔隙体积以及渗透率随有效应力增加而下降的现象。随着我国石油资源的开采已经步入了中后期阶段,低渗、超低渗油气藏已成为开采的主要对象。为了明确应力敏感性对低渗油气藏产能影响,开展了大量研究,但低渗油藏应力敏感性评价方法却不够完善。选取天然岩心,人造岩心,使用不同实验方法,多种实验流体进行应力敏感性评价实验,针对不同类型油气藏,提出最合理的应力敏感性实验评价方法。
The reservoir stress sensitivity is the phenomenon that the pore volume and permeability of reservoir decrease with the increase of effective stress. While the exploitation of petroleum resources in China has entered in the middle and late stage, the low permeability and ultra-low permeability reservoirs have become the main targets of exploitation. In order to determine the influence of stress sensitivity on the productivity of low permeability reservoirs, a lot of researches have been carried out, but the evaluation methods of low permeability reservoir stress sensitivity are not perfect. In this paper, natural cores and artificial cores were chosen to do a variety of stress sensitivity tests with different methods and different fluid. Through the work, the most reasonable experiment evaluation method of stress sensitivity was determined.
The reservoir stress sensitivity is the phenomenon that the pore volume and permeability of reservoir decrease with the increase of effective stress. While the exploitation of petroleum resources in China has entered in the middle and late stage, the low permeability and ultra-low permeability reservoirs have become the main targets of exploitation. In order to determine the influence of stress sensitivity on the productivity of low permeability reservoirs, a lot of researches have been carried out, but the evaluation methods of low permeability reservoir stress sensitivity are not perfect. In this paper, natural cores and artificial cores were chosen to do a variety of stress sensitivity tests with different methods and different fluid. Through the work, the most reasonable experiment evaluation method of stress sensitivity was determined.
引文
[1]Terzaghi K.Die berechnung der durchlassigkeitsziffer des tones aus dem verlauf der hydrodynamischen spannungserscheinungen[J].Sitzungsberichte der Akademie der Wissenschaften in Wien,Mathematisch-Naturwissenschaftliche Klasse,Abteilung IIa,1923,132:125-138.
[2]李闽,肖文联,赵春兰,等.不能用净应力评价低渗砂岩岩石应力敏感性[J].西南石油大学学报(自然科学版),2009,31(5):170-172.
[3]李传亮,孔祥言,徐献芝,等.多孔介质的双重有效应力[J].自然杂志,1999,21(5):288-292.
[4]李闽,肖文联.低渗砂岩储层渗透率有效应力定律试验研究[J].岩石力学与工程学报,2008,27(a02):3535-3540.
[5]焦春艳,何顺利,谢全,等.超低渗透砂岩储层应力敏感性实验[J].石油学报,2011,32(3):489-494.
[6]田巍,朱维耀,朱华银,等.回压应力敏感性评价测试方法研究[J].天然气地球科学,2015,26(2):377-383.
[7]李传亮.储层岩石的应力敏感性评价方法[J].大庆石油地质与开发,2006,25(1):40-42.
[8]刘均一,邱正松,黄维安,等.不同渗透率储层应力敏感性试验对比[J].中国石油大学学报:自然科学版,2014,38(2):86-91.
[9]齐亚东,战剑飞,李晓明,等.特低渗透砂岩储层应力敏感性实验[J].科技导报,2012,30(3):49-52.
[10]任和爱,赵世旭,李成福,等.低渗砂岩的变围压应力敏感性实验评价[J].海洋地质前沿,2012(6):60-64.
[2]李闽,肖文联,赵春兰,等.不能用净应力评价低渗砂岩岩石应力敏感性[J].西南石油大学学报(自然科学版),2009,31(5):170-172.
[3]李传亮,孔祥言,徐献芝,等.多孔介质的双重有效应力[J].自然杂志,1999,21(5):288-292.
[4]李闽,肖文联.低渗砂岩储层渗透率有效应力定律试验研究[J].岩石力学与工程学报,2008,27(a02):3535-3540.
[5]焦春艳,何顺利,谢全,等.超低渗透砂岩储层应力敏感性实验[J].石油学报,2011,32(3):489-494.
[6]田巍,朱维耀,朱华银,等.回压应力敏感性评价测试方法研究[J].天然气地球科学,2015,26(2):377-383.
[7]李传亮.储层岩石的应力敏感性评价方法[J].大庆石油地质与开发,2006,25(1):40-42.
[8]刘均一,邱正松,黄维安,等.不同渗透率储层应力敏感性试验对比[J].中国石油大学学报:自然科学版,2014,38(2):86-91.
[9]齐亚东,战剑飞,李晓明,等.特低渗透砂岩储层应力敏感性实验[J].科技导报,2012,30(3):49-52.
[10]任和爱,赵世旭,李成福,等.低渗砂岩的变围压应力敏感性实验评价[J].海洋地质前沿,2012(6):60-64.