Reservoir Evaluation of Upper Triassic Xujiahe Formation in Southwest Sichuan Basin
Received date: 2007-10-08
Revised date: 2008-01-03
Online published: 2008-02-10
According to core and thin-section observation,drilling,logging and reservoir physical property analysis, the reservoir body in the Xujiahe Formation of the southwest Sichuan basin is braided delta front sandbodyies which have wide distribution, poor physical properties, and low porosity and low permeability. The lithology is mainly feldspar quartz sandstone and lithic quartz sandstone, and the main pore spaces are relict primary intergranular pores, intergranular solution pores, intragranular solution pores, pores in grain films and fractures. Reservoirs of the Xu 2 and Xu 4 are well developed and the Xu 2 reservoir physical properties are better than Xu 4. Favorable reservoirs were underwater distributary channels and mouth bars. High quality reservoirs are controlled by structural conditions, sedimentary facies and particle size of rocks. The types of reservoirs in the Xujiahe Formation are mainly Types Ⅱ and Ⅲ, and the type I is less.
XIE Wu-ren,LI Xi-zhe,ZHANG Man-lang,YANG Wei,YANG Xiao,CHENG Di . Reservoir Evaluation of Upper Triassic Xujiahe Formation in Southwest Sichuan Basin[J]. Natural Gas Geoscience, 2008 , 19(1) : 94 -99 . DOI: 10.11764/j.issn.1672-1926.2008.01.94
[1 ]李宗银，李耀华．川西前陆盆地上三叠统天然气有利区带评价［J］.天然气勘探与开发，2004，27（2）:1-6．
［2］魏国齐，刘德来，张林，等.四川盆地天然气分布规律与有利勘探领域［J］．天然气地球科学，2005，16（4）：437-442．
［3］刘树根，罗志立，戴苏兰，等.龙门山冲断带的隆生和川西前陆盆地的沉降［J］．地质学报，1995，9（3）：205-213．
［4］杨晓萍，顾家裕，贾进华，等．我国中西部中新生界前陆盆地沉积演化与充填模式［J］．天然气勘探与开发，2005，28（1）：1-4．
［5］贾承造，宋岩，魏国齐,等．中国中西部前陆盆地的地质特征及油气聚集［J］．地学前缘，2005，12（3）：4-13．
［6］罗启后，王世谦．四川盆地中西部三叠系重点含气层系天然气富集条件研究［J］．天然气工业，1996，16（1）：40-55．［7］胡明毅，李士祥，魏国齐，等．川西前陆盆地上三叠统须家河组致密砂岩储层评价［J］．天然气地球科学，2006，17（4）：456-458．
［8］杨威,魏国齐,李跃刚,等.川西地区上三叠统须家河组二段裂缝形成期探讨[J].天然气,2007,3(4):1-4.
［9］李耀华，师晓蓉，杨西南．川中—川西地区上三叠统储集条件研究［J］．天然气勘探与开发，2003，26（3）：1-6．
[10]王成林,杜业波,张剑.川西前陆盆地须家河组储层孔隙演化模式[J].大庆石油学院学报,2006,30(5):11-12.
［11］李宗银，李耀华．川西前陆盆地上三叠统天然气有利区带［J］．天然气勘探与开发，2004，27（2）：1-4.
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号