页岩油气纵向综合甜点识别新方法及定量化评价

doi:10.7623/syxb201611002

石油学报 ›› 2016, Vol. 37 ›› Issue (11): 1337-1342,1360.DOI: 10.7623/syxb201611002

页岩油气纵向综合甜点识别新方法及定量化评价

陈桂华, 白玉湖, 陈晓智, 徐兵祥, 祝彦贺, 冯汝勇, 陈岭

中海油研究总院北京 100028

收稿日期:2016-03-01 修回日期:2016-08-26 出版日期:2016-11-25 发布日期:2016-12-10
通讯作者: 白玉湖,男,1976年8月生,1999年获石油大学(华东)学士学位,2006获中国科学院力学研究所博士学位,现为中海油研究总院高级工程师,主要从事页岩油气、致密气、水合物等非常规油气开发研究。Email:byh_2002@163.com
作者简介:陈桂华,男,1963年8月生,1986年获中国地质大学(北京)学士学位,1989年获中国地质大学(北京)硕士学位,现为中海油研究总院高级工程师,主要从事页岩气、致密气等领域的勘探研究工作。Email:chengh@cnooc.com.cn
基金资助:
中海石油（中国）有限公司综合科研项目“海外页岩油气产能评价技术与方法研究”（YXKY-2016-ZY-03）资助。

A new identification method for the longitudinal integrated shale oil/gas sweet spot and its quantitative evaluation

Chen Guihua, Bai Yuhu, Chen Xiaozhi, Xu Bingxiang, Zhu Yanhe, Feng Ruyong, Chen Ling

CNOOC Research Institute, Beijing 100028, China

Received:2016-03-01 Revised:2016-08-26 Online:2016-11-25 Published:2016-12-10

摘要/Abstract

摘要：

页岩储层厚度一般较大，且储层物性纵向上非均质性强，长水平井多级压裂开发技术要求对水平井着陆点及轨迹进行优选。通过综合考虑页岩可压性、资源禀赋、流动性等因素，提出了页岩油气纵向综合甜点的概念，其是纵向地质因素与工程因素的综合。建立了页岩油气纵向综合甜点识别流程及方法，实现了纵向上从远景段、有利段、核心段，再到甜点段的识别过程。定义了纵向综合甜点指数，可以量化评价储层物性纵向分布的差异及非均质性。在此基础上，考虑地应力分布预估有效压裂裂缝高度，定义了纵向综合甜点系数，能够准确量化最优水平井着陆点，可以有效指导水平井靶点及轨迹设计，并且经过现场应用证明了该方法的有效性。

关键词: 页岩油气, 纵向综合甜点, 量化方法, 纵向综合甜点指数, 纵向综合甜点系数

Abstract:

Shale reservoir is generally characterized by large thickness and strong longitudinal heterogeneity of reservoir physical property. The multi-stage fracturing development technology for long horizontal well requires the optimization of landing point and trajectory in horizontal well. This paper put forward the concept of longitudinal integrated shale oil/gas sweet spot considering shale fracability, resources endowment, fluidity and other factors, which is a synthesis of longitudinal geological factors and engineering factors. Then the identification process and method of longitudinal integrated sweet spot was established, thus realizing the recognition process from prospective segment to favorable segment, core segment and sweet spot segment, respectively. Meanwhile, longitudinal integrated sweet spot index was designed, which can quantitatively evaluate the difference and heterogeneity in longitudinal distribution of reservoir physical properties. On this basis, the longitudinal integrated sweet spot coefficients considering effective stress distribution were designed to predict effective hydraulic fracture height, which can accurately quantify the optimal horizontal landing point and effectively guide the target point and trajectory designs of horizontal well. Field application has proved the effectiveness of this method.

Key words: shale oil and gas, longitudinal integrated sweet spot, quantitative method, longitudinal integrated sweet spot index, longitudinal integrated sweet spot coefficient

中图分类号:

TE132.8

陈桂华, 白玉湖, 陈晓智, 徐兵祥, 祝彦贺, 冯汝勇, 陈岭. 页岩油气纵向综合甜点识别新方法及定量化评价[J]. 石油学报, 2016, 37(11): 1337-1342,1360.

Chen Guihua, Bai Yuhu, Chen Xiaozhi, Xu Bingxiang, Zhu Yanhe, Feng Ruyong, Chen Ling. A new identification method for the longitudinal integrated shale oil/gas sweet spot and its quantitative evaluation[J]. Acta Petrolei Sinica, 2016, 37(11): 1337-1342,1360.

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页岩油气纵向综合甜点识别新方法及定量化评价

A new identification method for the longitudinal integrated shale oil/gas sweet spot and its quantitative evaluation

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