非常规油气致密储层微观孔喉结构表征新技术及意义

非常规油气致密储层微观孔喉结构表征新技术及意义

白　斌^1,2 朱如凯^1,2 吴松涛^1,2 崔景伟^1,2 苏　玲^1,2 李婷婷^1,2

1 提高石油采收率国家重点实验室；2 中国石油勘探开发研究院

出版日期:2014-06-15 发布日期:2014-06-15
作者简介:白斌（1981-），男，陕西武功人，博士，2008 年毕业于西北大学，工程师，主要从事油气沉积储层研究工作。地址：北京市海淀区学院路20 号中国石油勘探开发研究院实验中心，邮政编码：100083。E-mail：baibin81@petrochina.com.cn
基金资助:
国家重点基础研究发展计划^“致密油（页岩油）资源评价与富集区预测^”（2014CB239001）；国家科技重大专项^“岩性地层油气藏沉积体系、储层形成机理与分布研究^”（2011ZX05001-002）。

New Micro-throat Structural Characterization Techniques for Unconventional Tight Hydrocarbon Reservoir

Bai Bin^1,2, Zhu Rukai ^1,2, Wu Songtao^1,2, Cui Jingwei^1,2, Su Ling^1,2, Li Tingting^1,2

1 State Key Laboratory of Enhanced Oil Recovery; 2 PetroChina Research Institute of Petroleum Exploration & Development

Online:2014-06-15 Published:2014-06-15

摘要/Abstract

摘要： 非常规油气致密储集体以纳米、微米孔喉为主，微观孔喉结构特征是决定其低孔低渗的主要因素，也是建立非常规油气储层评价标准，揭示油气形成因素、富集规律等基本地质特征的基础。目前，非常规油气致密储层微观孔喉表征技术主要利用了纳米材料科学、物理化学以及分析化学等学科研究方法，通过二维场发射扫描电镜等图像直接观测、气体吸附等间接数值测定以及X-CT 三维数值重构模拟孔隙结构三类技术方法，在孔喉大小、形态、分布、三维连通性等方面取得了初步进展，提高了纳米级微观孔喉结构的表征精度。但孔喉结构特征表征技术仍在测试原理、多类型数据融合、多技术手段联合与实验前处理、多尺度特征表征等方面值得进一步探索，该研究也将为准确评价有利致密储层发育区、致密油气等非常规油气甜点区提供依据。

Abstract: Nano-scale and micro-scale pore throats dominate the unconventional tight oil and gas reservoirs. Pore-throat microscopic structure is a key factor to lead to the low-permeability and low-porosity reservoir features. It is also the foundation to establish the criteria for evaluation of unconventional oil and gas reservoirs and interpret the basic geologic features, such as hydrocarbon occurrence and accumulation. Currently, microscopic pore-throat characterization techniques for unconventional tight oil and gas reservoir are based on nanoscale material science, physical chemistry and analytical chemistry. Initial progress has been made in the study of pore size, morphology, distribution and 3D connection by means of direct image observation under field-emission scanning microscope, indirect numerical value measurement such as gas absorption, and 3D value reconstruction modeling pore structure by X-CT, improving the characterization accuracy of nano-scale microscopic pore-throat structure. However, more efforts are required to improve pore-throat structural characterization techniques in the areas of principle testing, integration of multi-data, combination of multi-techniques and pre-experiment disposition, and multi-scale feature characterization. This study will provide the data for precise evaluation of favorable tight reservoir, tight oil and gas zones and other unconventional hydrocarbon sweet spots.

白　斌,朱如凯,吴松涛,崔景伟,苏　玲,李婷婷. 非常规油气致密储层微观孔喉结构表征新技术及意义[J]. .

Bai Bin,Zhu Rukai,Wu Songtao,Cui Jingwei,Su Ling and Li Tingting. New Micro-throat Structural Characterization Techniques for Unconventional Tight Hydrocarbon Reservoir[J]. .