致密储层分析实验方法探讨——以三塘湖盆地芦草沟组为例

吐哈油田公司 勘探开发研究院,新疆 哈密,839009

致密油; 储层; 三塘湖盆地; 芦草沟组

Experiment method of tight reservoir——A case study of Lucaogou Formation in Santanghu Basin
MA Qiang,HUANG Wei-dong,BAI Guo-juan,QING Zhong,SUN Yu-feng,LI Hong-wei,ZHANG Pin,SHEN Hai-lian

(Research Institute of Exploration and Development,Tuha Oilfield Company,Petro China,Hami 839009,China)

tight oil; reservior; Santanghu basin; Lucaogou formation

备注

致密油勘探是当今热点,但由于致密油往往在非常规储层中,常规实验方法难以满足地质研究的需求,三塘湖盆地芦草沟组储层非常致密、岩性复杂且相变快,需要利用新技术新方法满足勘探开发实际需求。通过三塘湖盆地芦草沟组岩性识别及储层实验方法对比研究,利用岩心、全岩X衍射、扫描电镜、QEMSCAN扫描电镜、薄片、碳酸盐含量测定等方法组合,提出全岩X衍射为主鉴定成分,结合薄片、手标本解释成因,并参考区域环境特征等方法最终定名的岩石学鉴定方法,并利用铸体薄片、氩离子剖光扫描电镜、纳米CT,常规孔隙度与渗透率测定、GRI,高压压汞等方法优选组合,最终找到有效评价致密储层物性的方法组合,对三塘湖盆地芦草沟组致密油下一步勘探起到了积极作用,并对其它地区致密储层研究中实验方法的优选提供了较好的范例。

The tight oil exploration is hot spot nowadays.The tight oil is deposited in non-conventional reservior,so the conventional experiment methods are difficult to satisfy the relative research.Based on the comparison of lithology identification and experiment methods,this paper brings forward the naming method using granule reservior:identify the composition by XRD,explain the cause of formation combining thin slice and specimen,consider the environmental characteristic.And the evaluation methods for physical properties of reservior have been summarized.They are FESEM,CT,physical property,GRI,mercury-injection method,and so on.It is important to further exploration in Santanghu Basin.Besides,the study can guide the experiment methods choice of tight reservior in other areas.