顺北和托甫台区块奥陶系断裂结构单元测井响应特征初探

doi:10.13809/j.cnki.cn32-1825/te.2020.02.003

摘要/Abstract

摘要：

顺北和托甫台地区主干、次级断裂是勘探开发评价的主要领域,断裂具有控储、控藏、控富的重要作用,开展断裂内部结构特征研究对勘探目标的优选和开发潜力的评价都具有重要意义。由于断裂内部不同结构单元储层类型、物性特征等方面与原岩相比有所不同,必然会在测井资料上有相应的反映,这使得运用各类测井资料来刻画断裂内部结构具有可行性,充分挖掘测井资料中蕴含的信息,会成为了解断裂内部结构的一把“钥匙”。结合露头剖面与地震资料,充分利用顺北和托甫台两个区块的常规和成像测井资料,对断裂进行了定性的内部结构分析,分为断层核、破碎带、裂缝带、分散裂缝四种类型的断裂结构单元,总结了断裂内部各结构单元的测井响应特征,初步建立了断裂内部结构单元测井识别标准。

关键词: 顺北, 托甫台, 断裂, 内部结构, 测井响应

Abstract:

The main and secondary fault zones in Shunbei and Tuoputai areas are the main fields of exploration and development evaluation. The faults play an important role in controlling reservoir, reservoir and wealth. It is of great significance to carry out research on the internal structural characteristics of the faults for the optimization of exploration targets and the evaluation of development potential. The reservoir types and physical characteristics of different internal structure of the fracture units are different from those of the original rocks, so there must be a corresponding reflection on the logging data. This makes it feasible to describe the internal structure of the fracture with various well logging data. Further exploration of the information contained in the logging data will be a “key” to understanding the internal structure of the fracture. By combining outcrop profile with seismic data, the internal structure of the fracture was qualitatively analyzed by making full use of conventional and imaging logging data in shunbei and Tuofutai blocks. It can be divided into four types of fracture structural units: fault core, crushed zone, fracture zone and dispersed fracture. And then the logging response characteristics of each structural unit in the fracture are summarized, and the identification standard of the structural unit in the fracture is established.

Key words: Shunsbei, Tuofutai, fault zone, internal structure, logging response

中图分类号:

P631.81

邹榕,徐中祥,张晓明等. 顺北和托甫台区块奥陶系断裂结构单元测井响应特征初探[J]. 油气藏评价与开发, 2020, 10(2): 18-23.

Rong ZOU,Zhongxiang XU,Xiaoming ZHANG, et al. Log response characteristics of Ordovician fracture unit in Shunbei and Tuofutai block[J]. Reservoir Evaluation and Development, 2020, 10(2): 18-23.

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