Impact of Pack Bitumen on Reservoir Quality——Taking Santai-North Santai in Junggar Basin as an Example
详细信息
- 责任者：Chen Shijia (Southwest Petroleum University ; Chengdu 610500 ; China) ; Yang Guoping
- 刊名：Xinjiang Petroleum Geology
- 出版年：2010
- 卷期：31(4)
- 关键词：沥青 ; asphalt ; 储层性质 ; reservoir properties ; 准噶尔盆地 ; Junggar Basin
- 页码：p.341-343
- 图表：4 illus., 8 refs.
- 分类号：1003
- issnNo：ISSN1001-3873
- isbnNo：CN65-1107/TE
摘要
A large amount of bitumen and heavy oil with high density are found in the Triassic and Jurassic reservoirs in Santai-North Santai area in eastern Junggar Basin. They filled into the reservoir pores, occupied the megapores, reduced the porous connection rate, caused the post-generating crude oil to enter the pores with difficulty, hence it is difficult to form larger-scale and higher-yielding oil reservoir. The reservoir property contrast between before and after the organic solvent extraction indicates that the porosity of 9 samples adds to 21.5%, averaging about 13.4%; the permeability of 7 samples adds to 121.50×10-3 μm2, averaging about 31.99×10-3 μm2. It is pointed out that it should keep away from the reservoir with high amount of bitumen as far as possible to find high-yielding oil reservoirs in the future, in addition to considering structural factors, integrated with sedimentary facies and reservoir research results.