二连盆地阿南凹陷白垩系腾一下段致密油有效储层物性下限研究

张以明; 付小东; 郭永军; 寿建峰; 周进高; 李彬; 张天付; 蓝宝峰

doi:10.11781/sysydz201604551

二连盆地阿南凹陷白垩系腾一下段致密油有效储层物性下限研究

doi: 10.11781/sysydz201604551

1.
中国石油华北油田分公司, 河北任丘 062550
2. 中国石油杭州地质研究院, 杭州 310023

基金项目: 中国石油天然气股份公司重大科技专项（2014E-35）资助。

详细信息

作者简介:
张以明(1959—),男,博士,教授级高级工程师,从事油气勘探研究与管理。E-mail:ktb_zym@petrochina.com.cn。

通讯作者:
付小东(1980—),男,硕士,工程师,从事石油地质、储层地质综合研究。E-mail:fuxd_hz@petrochina.com.cn。

中图分类号: TE122.24
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- 被引次数: 27
出版历程
- 收稿日期: 2016-04-10
- 修回日期: 2016-07-01
- 刊出日期: 2016-07-28

Petrophysical property limits of effective tight oil reservoirs in the lower part of the first member of Cretaceous Tengger Formation, A'nan Sag, Erlian Basin, North China

1.
PetroChina Huabei Oilfield Company, Renqiu, Hebei 062552, China
2. PetroChina Hangzhou Research Institute of Geology, Hangzhou, Zhejiang 310023, China

摘要

摘要: 二连盆地阿南凹陷白垩系腾格尔组一段下亚段是该凹陷致密油勘探的主要目的层系，发育沉凝灰岩和砂岩2类有利的致密储层。腾一下段致密储层孔隙度、渗透率变化范围较大，含油非均质性强，受物性条件控制明显。在物性、试油、压汞等分析资料基础上，运用含油产状法、经验统计法、分布函数曲线法、试油法和最小有效孔喉法等多种方法，综合厘定了腾一下段致密油储层物性下限：其中沉凝灰岩类有效储层孔隙度下限为4.0%，渗透率下限为0.008×10^-3 μm²；砂岩有效储层孔隙度下限为5.0%，渗透率下限为0.05×10^-3 μm²。有效储层下限的确定可为致密油"甜点"储层预测、资源潜力评价和勘探目标优选提供依据。
- 物性下限 /
- 有效储层 /
- 致密油 /
- 腾格尔组 /
- 阿南凹陷 /
- 二连盆地
Abstract: The lower part of the first member of Cretaceous Tengger Formation (K₁t^1x) is a main target for tight oil exploration in the A'nan Sag. Two favorable tight reservoir types including tuffites and sandstones have been found. The porosity and permeability of tight reservoirs change greatly. The heterogeneity of oil-bearing strata is strong, which is controlled obviously by porosity and permeability. Based on physical property measurements, well testing, mercury injection data and so on, we determined the petrophysical property cutoffs of effective tight oil re-servoirs in K₁t^1x using an oil-bearing occurrence method, experimental statistics, distribution function, well testing and minimum effective pore throat. The cutoff of effective reservoir porosity of tuffites is 4.0%, and that of permeability is 0.008×10^-3 μm². The cutoff of effective reservoir porosity of sandstones is 5.0%, and that of permeability is 0.05×10^-3 μm². The determination of cutoffs of an effective reservoir provides a scientific basis for "sweet spot" reservoir prediction, resource potential evaluation and exploration target selection of tight oil.
- petrophysical property cutoff /
- effective reservoir /
- tight oil /
- Tengger Formation /
- A'nan Sag /
- Erlian Basin

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