致密砂岩气藏有效砂体分布及主控因素——以苏里格气田南区为例

郭智; 贾爱林; 薄亚杰; 唐海发; 郭本晓

doi:10.11781/sysydz201406684

致密砂岩气藏有效砂体分布及主控因素——以苏里格气田南区为例

doi: 10.11781/sysydz201406684

1.
中国石油勘探开发研究院, 北京 100083
2. 中国石油测井有限公司技术中心, 西安 710077
3. 陕西延安石油天然气有限公司, 西安 710002

基金项目: 国家油气重大专项"天然气开发关键技术"(2011ZX05015)与中国石油天然气集团公司科技攻关项目"天然气开发关键技术研究"(2011B-15)资助

详细信息

作者简介:
郭智(1986-),男,博士,从事开发地质研究。E-mail:a349261981@163.com。

中图分类号: TE122.2⁺5
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出版历程
- 收稿日期: 2013-07-29
- 修回日期: 2014-09-09
- 刊出日期: 2014-11-28

Effective sand body distribution and its main controlling factors in tight sandstone gas reservoirs: A case study of southern Sulige Gas Field

1.
Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China
2. Technology Center of CNPC Logging Co., Ltd., Xi'an, Shaanxi 710077, China
3. Shaanxi Yan'an Oil and Natural Gas Co., Ltd., Xi'an, Shaanxi 710002, China

摘要

摘要: 苏里格气田南区是苏里格气田主体向南的延伸,距离物源区远,储层埋深大,成岩作用强。落实有效砂体分布及主控因素,是苏南等气田边部地区高效开发的基础。以苏南盒8、山1段储层为目标,结合构造、沉积、储层、成岩分析,研究了有效砂体的空间展布特征,总结了有效砂体的主控因素。苏南有效砂体多分布在心滩和分流河道底部等粗砂岩相,垂向上发育孤立型、垂向叠置型、侧向搭接型3种模式,平面上分布在中、东部2条主砂带内。在有效储层形成过程中,宽缓的构造坡降是沉积、成藏的背景,强水动力条件下的浅水辫状河三角洲平原沉积控制了储层的分布格局,而成藏前的压实、胶结、溶蚀等成岩作用深刻改造了储层,塑造了有效砂体的形态。
- 有效砂体 /
- 沉积 /
- 砂体分布 /
- 成岩作用 /
- 主控因素 /
- 苏里格气田
Abstract: The southern Sulige area is the southward extension of the main part of the Sulige Gas Field, where is far from sediment provenance, buried deep and has a strong diagenesis. Understanding the distribution characteristics and main controlling factors of effective sand body is the basis of the efficient development of the edge regions of the Sulige Gas Field, such as the southern Sulige area. Focusing on the reservoirs of He8 member and Shan1 member, the areas of tectonic, sedimentation, reservoir and diagenesis were studied, and the distribution characteristics and main controlling factors of effective sand body were concluded. The effective sand bodies in the southern Sulige area mainly distribute in point bars and the bottom of distributary channels, and can be vertically classified into three types: isolated, vertically stacking, and laterally shiplap ones. Horizontally, they locate in the central and eastern sand belts of the study area. During the formation of effective reservoirs, a gentle structure background is necessary for the sedimentation and formation of gas reservoirs. The shallow braided-river delta plain deposits in the strong hydrodynamic environment determined the distribution pattern of reservoir, whereas the compaction, cementation and dissolution diagenesis before the formation progress of gas reservoirs greatly reformed the reservoirs and controlled the distribution of effective sand body.
- effective sand body /
- sedimentation /
- sand body distribution /
- diagenesis /
- mainly controlling factors /
- Sulige Gas Field

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