元坝中部断褶带须家河组裂缝分形特征

doi:10.11885/j.issn.1674-5086.2016.03.08.02

西南石油大学学报(自然科学版) ›› 2017, Vol. 39 ›› Issue (1): 35-42.DOI: 10.11885/j.issn.1674-5086.2016.03.08.02

元坝中部断褶带须家河组裂缝分形特征

范存辉¹, 陶佳丽², 周坤³, 胡峰⁴, 黄为¹

1. 西南石油大学地球科学与技术学院, 四川成都 610500;
2. 中国石油西南油气田分公司勘探开发研究院, 四川成都 610051;
3. 中国石油西南油气田分公司川东北气矿, 四川达州 635000;
4. 中国石油川庆钻探工程有限公司地球物理勘探公司, 四川成都 610213

收稿日期:2016-03-08 出版日期:2017-02-01 发布日期:2017-02-01
通讯作者: 范存辉,E-mail:fanchswpi@163.com
作者简介:范存辉,1980年生,男,汉族,河南洛阳人,讲师,博士,主要从事储层评价、构造地质、裂缝预测等方面的教学与科研工作。E-mail:fanchswpi@163.com;陶佳丽,1988年生,女,汉族,四川资阳人,硕士,主要从事储层评价、油气地质研究、测井资料解释与综合研究等方面的工作。E-mail:taojiali@petrochina.com.cn;周坤,1987年生,男,汉族,湖北黄冈人,硕士,主要从事储层特征、储层评价方面的研究工作。E-mail:swpuzhoukun911@163.com;胡峰,1988年生,男,汉族,四川成都人,工程师,硕士,主要从事油气勘探方面的研究工作。E-mail:34567521@qq.com;黄为,1994年生,男,汉族,四川成都人,主要从事构造地质研究。E-mail:490271638@qq.com
基金资助:
国家科技重大专项（2011ZX05013-006-008）；四川省应用基础研究项目（2017JY0177）。

Fractal Characteristics of Fracture of Xujiahe Formation in Fault-fold Belt of Central Yuanba Area

FAN Cunhui¹, TAO Jiali², ZHOU Kun³, HU Feng⁴, HUANG Wei¹

1. School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. Exploration and Development Research Institute, Southwest Oil & Gas Field Company, PetroChina, Chengdu, Sichuan 610051, China;
3. Northeast Sichuan Gas Field, Southwest Oil & Gas Field Company, PetroChina, Dazhou, Sichuan 635000, China;
4. Geophysical Prospecting Company, CNPC Chuanqing Drilling Engineering Co. Ltd., Chengdu, Sichuan 610213, China

Received:2016-03-08 Online:2017-02-01 Published:2017-02-01

摘要/Abstract

摘要： 针对四川盆地元坝中部断褶带须家河组岩体在构造应力场作用下的破裂具有良好的自相似性和分形特征，开展了须家河组断裂发育的分形特征和取芯段裂缝的分形特征研究，研究中采用箱形覆盖法来求取断裂和裂缝分维值，利用数学公式将各子区域的断裂容量维与岩芯裂缝容量维通过岩芯裂缝密度进行拟合，建立二者的定量关系，获得了四川盆地元坝中部断褶带须家河组有利的裂缝发育带。结果表明，须家河组裂缝分维值大于1.45的区域为裂缝发育区，油气富集程度高；裂缝分维值大于0.95且小于1.45的区域为裂缝较发育区；裂缝分维值小于0.95的区域为裂缝欠发育区。

关键词: 裂缝, 断裂, 分形特征, 须家河组, 元坝中部

Abstract: Fractures in the rock masses of the Xujiahe Formation in the fault-fold belt of the central Yuanba area of the Sichuan Basin are characterized by good self-similarity and fractal characteristics that are attributed to the tectonic stress field. Thus, this research is conducted with respect to the fractal characteristics of fault developments in the Xujiahe Formation, as well as factures in the rock core. The box-covering method was employed in this study to derive the fractal dimension values of faults and fractures. Further, using the fracture density in the core, mathematical formulae were adopted to fit the capacity dimensions of faults in each sub-area, as well as factures in the rock core, where the quantitative relation thereof was established. In this manner, the favorable fracture development zone of the Xujiahe Formation in the fault-fold belt of the central Yuanba area of the Sichuan Basin is obtained. The results show that the areas where the fractal dimension value of fractures in the Xujiahe Formation exceeds 1.45 belong to the fracture development zones, which are characterized by a high level of oil and gas enrichment and accumulation. The areas with fractal dimension values ranging from 0.95 to 1.45 are the relatively developed fracture zones, while areas with less than 0.95 are underdeveloped fracture zones.

Key words: fractures, fault, fractal characteristics, Xujiahe Formation, central Yuanba area

中图分类号:

TE132

范存辉, 陶佳丽, 周坤, 胡峰, 黄为. 元坝中部断褶带须家河组裂缝分形特征[J]. 西南石油大学学报(自然科学版), 2017, 39(1): 35-42.

FAN Cunhui, TAO Jiali, ZHOU Kun, HU Feng, HUANG Wei. Fractal Characteristics of Fracture of Xujiahe Formation in Fault-fold Belt of Central Yuanba Area[J]. 西南石油大学学报(自然科学版), 2017, 39(1): 35-42.

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元坝中部断褶带须家河组裂缝分形特征

Fractal Characteristics of Fracture of Xujiahe Formation in Fault-fold Belt of Central Yuanba Area

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