油气藏评价与开发 ›› 2022, Vol. 12 ›› Issue (1): 204-214.doi: 10.13809/j.cnki.cn32-1825/te.2022.01.018
收稿日期:
2021-11-16
出版日期:
2022-02-26
发布日期:
2022-03-24
作者简介:
钱永新(1972—),男,硕士,工程师,从事页岩油地质研究工作。地址:新疆维吾尔自治区克拉玛依市克拉玛依区准噶尔路29号,邮政编码:834000。E-mail: 基金资助:
QIAN Yongxin(),ZOU Yang,ZHAO Xinmei,CHANG Qiusheng,HE Wenjun,HUANG Liliang
Received:
2021-11-16
Online:
2022-02-26
Published:
2022-03-24
摘要:
玛湖凹陷是准噶尔盆地重要的生烃凹陷,位于凹陷北部的玛页1井对二叠系风城组进行了全井段连续取心。通过系统描述和剖析岩心特征,结合高密度取样分析、电性及核磁共振分析,揭示出风城组常规和非常规储层并存,碱湖环境造就了这一特殊组合。常规储层以火山岩类、砂砾岩类和砂岩类为主,发育于低位期淡水或低盐度水体;非常规储层以泥岩类、云岩类和粉砂岩类为主,发育于弱水动力条件及强烈蒸发环境。根据四性关系,初步建立甜点评价标准,揭示了玛页1井风城组发育有一个常规“甜点段”和三个非常规“甜点段”,常规“甜点段”发育于风城组一段中部和下部,非常规“甜点段”发育于风城组三段下部、风城组二段,进一步证实了碱湖沉积盆地具有较好的油气勘探潜力。玛页1井风城组岩心剖析,进一步证实了碱湖沉积丰富的油气资源潜力,同时也为玛湖凹陷风城组“铁柱子”的建立奠定坚实基础。
中图分类号:
钱永新,邹阳,赵辛楣,常秋生,何文军,黄立良. 准噶尔盆地玛湖凹陷玛页1井二叠系风城组全井段岩心剖析与油气地质意义[J]. 油气藏评价与开发, 2022, 12(1): 204-214.
QIAN Yongxin,ZOU Yang,ZHAO Xinmei,CHANG Qiusheng,HE Wenjun,HUANG Liliang. Full core analysis and petroleum geological significance of Permian Fengcheng Formation in Well-MY1, Mahu Sag[J]. Reservoir Evaluation and Development, 2022, 12(1): 204-214.
图2
玛页1井风城组常规储层主要岩性 注:a.灰色油斑熔结凝灰岩,含油面积30 %~40 %,溶洞发育,均含油;b.深灰色油斑玄武岩,杏仁状气孔被充填,岩石致密;c.杂色油斑不等粒凝灰质砾岩,砾石粒径5~15 mm,分选较差,磨圆次棱角—次圆状,加酸起泡,出筒时外渗褐色中质油;d.杂色荧光含云含凝灰质砂质砾岩,砾石粒径2~10 mm,分选中等—差,磨圆次圆状,微孔发育,基质含油;e.灰色油斑凝灰质砾质粗砂岩,砾石粒径2~8 mm,分选中等—差,磨圆次圆状,凝灰质胶结;f.灰色凝灰质粗砂岩,砂粒成分以岩屑为主,粒径0.5~2 mm,分选中等,出筒时含油面积30 %~40 %;g.油迹凝灰质中砂岩,砂粒粒径0.25~0.5 mm,分选中等—好,孔隙凝灰质胶结,致密,局部含钙质,加酸起泡,含油面积20 %~30 %;h.深灰色粉细砂岩,砂粒粒径0.1~0.25 mm,分选中等—好,孔隙凝灰质胶结,致密,局部含钙质,加酸起泡,含油面积50 %;i.浅灰色油迹凝灰质粉砂岩,岩心水平缝较发育,密度为1~2条/10 cm,含油面积1 %。"
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