新疆石油地质

新疆石油地质 ›› 2003, Vol. 24 ›› Issue (1): 38-40+3.

• 油气勘探 • 上一篇    下一篇

青西油田下白垩统下沟组储集层特征

杜文博, 程少林, 陈建军, 杨麟科, 方国玉, 张建国, 汪满福   

  1. 中国石油 玉门油田分公司 勘探开发研究院,甘肃玉门735200
  • 收稿日期:2002-07-31 修回日期:2002-09-05 出版日期:2003-02-01 发布日期:2020-11-26
  • 作者简介:杜文博（1967-）,男,甘肃灵台人,硕士,工程师,石油地质。联系电话：0939-3924417

Characteristics of Low Permeability Conglomerate Reservoir in Xiagou Formation of Lower Cretaceous in Qingxi Oilfield

DU Wen-bo, CHEN Jian-jun, CHENG Shao-lin, YANG Lin-ke, FANG Guo-yu, ZHANG Jian-guo, WANG Man-fu   

  • Received:2002-07-31 Revised:2002-09-05 Online:2003-02-01 Published:2020-11-26
  • About author:DU Wen-bo (1967-), Male, Master, Engineer, Petroleum Geology, Research Institute of Exploration and Development, PetroChina Yu-men Oilfield Company, Yumen, Gansu 735200, China

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摘要： 青西油田下白垩统下沟组（K1g）为深层裂缝-孔隙型砾岩储集层,油藏埋深4200-4600m,基质孔隙度小于 8%,基质渗透率小于1×10-3μm2.由于砾岩储集层内高角度裂缝发育,改善了它的渗流性能。针对这类低孔、低渗透储 集层,通过岩石成分、孔隙类型及组合、孔隙结构、核磁共振、测井评价及测试等技术,并结合裂缝平面预测结果,进行 储集层预测,取得了良好的效果。

关键词: 酒泉盆地, 青西油田, 下白垩统, 储集层, 砾岩, 裂缝

Abstract: The conglomerate reservoir in Xiagou formation of Lower Cretaceous (K1g) in Qingxi oilfield is a kind of deep fratural-porous reservoir. Oil pool is usually buried in 4 200~4 600 m in depth. The matrix porosity is less than 8%, the matrix permeability is less than 1×10-3μm2. Because high-angle fractures are well developed in the reservoir, flowing performance of it is improved. By using some techniques of rock composition, pore type and assemblage, pore structure, NMR, well log and test integrated with the results from fractural planar prediction, we make a research in reservoir prediction and get good effects.

Key words: Jiuquan basin, Qingxi oilfield, Lower Cretaceous, conglomerate reservoir, fracture

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