测井评价技术在威荣深层页岩气田中的应用

doi:10.13809/j.cnki.cn32-1825/te.2021.01.006

摘要/Abstract

摘要：

页岩气储层的岩性、物性、含气性等特征与常规油气藏相比有明显的不同,因此,传统的常规测井技术和解释评价方法不能完全适用。针对威荣深层页岩气田储层地质特征和测井技术系列,在分析龙马溪组页岩储层测井响应特征及“六性”关系研究的基础上,运用“岩心刻度测井”技术以及岩石物理最优化体积模型和回归分析等技术方法,开展了页岩储层地质和工程参数的测井计算方法研究,形成了威荣深层页岩气储层关键参数的计算方法并建立页岩储层测井识别标准,在威荣深层页岩储层评价中取得了较好效果。

关键词: 测井解释评价, 页岩储层参数, 测井响应特征, 测井系列, 威荣深层页岩气田

Abstract:

The lithology, physical property, gas bearing property and other characteristics of shale gas reservoir are obviously different from those of conventional oil and gas reservoir, so the traditional conventional logging technology and the method of log interpretation can not be fully applicable. According to the geological characteristics and logging technology series of Weirong Deep Shale Gas Field, and based on the research on the logging response characteristics and “six-property” relation of the Longmaxi Formation shale reservoir, using core calibration log technique and petrophysical optimization volume model and regression analysis to carry out the research on the logging calculation method of shale reservoir geological and engineering parameters, form the calculation method of shale gas reservoir key parameters and establish the logging identification standard of shale reservoirs. The application shows that the proposed logging evaluation method has achieved good results in the evaluation of Weirong Deep Shale Reservoir.

Key words: log interpretation evaluation, shale reservoir parameters, logging response characteristics, logging series, Weirong Deep Shale Gas Field

中图分类号:

TE37

钟文俊,熊亮,黎鸿等. 测井评价技术在威荣深层页岩气田中的应用[J]. 油气藏评价与开发, 2021, 11(1): 38-46.

Wenjun Zhong,Liang Xiong,Hong Li, et al. Application of log evaluation technology in Weirong Deep Shale Gas Field[J]. Reservoir Evaluation and Development, 2021, 11(1): 38-46.

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储层类别	自然伽马（API）	铀（mg/L）	铀/钾	电阻率（Ω·m）	钍/铀	密度（g/cm³）	中子（%）	备注
Ⅰ	≥130	≥10	≥4	≥20	≤2	≤2.50	≤17	中子有明显挖掘效应,中子、密度有较大的包络面积, 电阻率呈高低阻相间的锯齿状
Ⅱ	110~130	2~10	1~4	13~20	2~4	2.50~2.65	17~20	中子有挖掘效应,中子、密度有一定的包络面积,但小于Ⅰ类页岩储层段,电阻率变化较小
Ⅲ	<110	<2	<1	<13	>4	>2.65	>20	与Ⅰ、Ⅱ类页岩相比,中子、密度包络关系反转,电阻率值较低且相对稳定