川西南威远地区龙马溪组页岩储层孔隙发育特征及控制因素分析

发布时间：2018-01-09 07:02

  本文关键词：川西南威远地区龙马溪组页岩储层孔隙发育特征及控制因素分析　出处：《地质科技情报》2017年02期 　论文类型：期刊论文

  更多相关文章： 龙马溪组 孔隙类型 孔隙结构特征 控制因素

【摘要】：以四川盆地西南威远地区龙马溪组页岩为研究对象,通过X衍射、场发射扫描电镜、氮气吸附实验方法和QSDFT的分析方法,对该区的页岩孔隙类型、结构及孔隙发育的自身控制因素进行了研究。研究结果表明:1龙马溪组主要发育3种孔隙,即有机质孔、无机质孔和微裂缝,有机质孔有连续分布和不连续或块状分布2种形态,孔隙以2种结构为主,即墨水瓶孔和平行狭缝内壁的孔隙。2孔隙直径呈0~2,2~4nm双峰态分布,微孔和介孔提供了主要的比表面积和孔隙体积,且随着埋藏深度的变浅,储层的孔隙体积和比表面积均减小。3页岩有机质含量和矿物组成控制了页岩储层的孔隙发育,有机质主要控制微孔的发育;石英主要影响介孔的发育,对其有一定的抑制作用;黏土矿物有利于介孔的发育,不利于微孔的发育。4与焦石坝地区页岩储层的对比表明,有机质含量是页岩气储集空间发育的主控因素。
[Abstract]:The shale longmaxiformation Weiyuan area of Southwest Sichuan basin as the research object, by means of X diffraction, field emission scanning electron microscopy, analysis method of nitrogen adsorption method and QSDFT, the shale pore types in this area, the control factors of structure and porosity were studied. The results showed that: 1 Longmaxi main there are 3 kinds of pores, namely organic pore, inorganic pore and micro fracture, organic matter has a continuous distribution and discontinuous or block the distribution of 2 kinds of forms, with 2 kinds of pore structure, Jimo water hole and the inner wall of the parallel slit pore.2 pore diameter was 0~2,2~4nm Shuangfeng normal distribution, microporous and mesoporous provides the main the specific surface area and pore volume, and with the buried depth of shallow reservoir, the pore volume and specific surface area decreased.3 shale content of organic matter and mineral composition control of shale reservoir porosity, organic matter is mainly control The development of microporous mesoporous silica; mainly influences the development, have a certain inhibitory effect on the mesoporous; clay mineral is conducive to development, is not conducive to the development of comparative.4 and coke dam area of shale reservoir pore showed that organic matter content is the main control of shale gas reservoir space development factors.

【作者单位】： 成都理工大学油气藏地质及开发工程国家重点实验室;成都理工大学能源学院;大庆油田第四采油厂地质大队;成都理工大学地球科学学院;
【基金】：国家重点基础研究发展计划(973)课题“中上扬子地区构造演化与下古生界油气多期成藏”(2012CB214805) 四川省科技计划项目“强改造作用下川南地区下古生界页岩气保存条件研究”(2015SZ0001)
【分类号】：P618.13
【正文快照】： 孔隙发育特征及控制因素分析昝博文1a,1b,刘树根1a,1b,白志强2,冉波1a,1c,叶sズ，

本文编号：1400412