第38卷第3期 2016年5月
石
油
采钻
工
艺
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：10007393(2016)03035906
DOI: 10.13639/j.odpt.2016.03.016
Vol. 38 No. 3 May 2016
风城陆相超稠油油砂微压裂扩容机理实验研究
林伯韬陈森”潘竟军”金衍张磊’庞惠文
1.中国石油大学（北京)石油工程学院；2.新疆油工程设计研究院
引用格式：林伯裕，陈棘，清竞军，金衍，张磊，宠惠文，风城陆梅超桐油油砂微压款扩客机理实验研究J」石油钻采工艺， 2016,38(3): 359-364,408
摘要：风城陆相超凋油油藏非均质性强且原油黏度高，SAGD开发普遗存在循环预热周期长的题。采用微压裂技术可缩短预热周期，由此需要掌疆储层在其实施过程中的扩容机理及规律。通过远取风城代表性油砂岩心，适行了岩石力学实验研究，分析了岩心的关键力学参数、剪张和张性扩容机理。研究发现，风或陆相油砂质地疏松，剪张角小于加拿大阿尔伯塔海相油砂，其力学参数和扩容程度受泥质和油质舍量的影响；在近并壁地带，图压越小，孔压越大，剪胀扩容量越大；而选井壁地带的剪张扩容量非常小。张性扩容可通过减小围压和增大孔压2种方式产生，且望性强的油砂在张性扩客时产生明显的塑性体应变。综合分新可知，现场微压裂成功的关键在于均匀提压注水并扩大其波及范图。
关键词：风城油田；陆相；油砂；微压裂；剪胀扩容；张性扩容
中图分类号：TE357
文献标识码：A
Experimental study on dilation mechanism of micro-fracturing in continental ultra-heavy oil
sand reservoir,Fengcheng Oilfield
LIN Botao', CHEN Sen', PAN Jingjun', JIN Yan', ZHANG Leit, PANG Huiwen 1. College of Pefroleum Engineering, China Uriversity of Petroleum, Bejing 102249, China:
2. Oil Prodhrction Technology Research Institute, PetroChina Xinjiang Oifield Company, Karamay, Xinjiang 834000, China
Citation: LIN Botao, CHEN Sen, PAN Jingjun, JIN Yan, ZHANG Lei, PANG Huiwen. Experimental study on dilation mechanism of micro-fracturing in continental ultra-heavy oil sand reservoir, Fengcheng Oilfield [ J ] . Oil Drilling & Production Technology, 2016, 38(3): 359-364, 408
Abstract: The ultra-heavy oil reservoir in the Fengcheng Oilfield is characterized by high viscosity and strong heterogeneity, which lead to the long circulating preheating cycle in SAGD (steam assisted gravity drainage) development. The micro-fracturing technology can shorten the preheating cycle. Accordingly, it is necessary to understand the dilation mechanism and rules of reservoirs in the process of micro-fracturing. The representative oil sand core samples were taken from the Fengcheng Oilfield for rock mechanics tests, so as to analyze key mechanical parameters and shear and tensile dilation mechanisms. It is shown that the continental oil sand in the Fengcheng Oilfield is unconsolidated and its dilation angles are much smaller than those of the Alberta marine oil sand in Canada. Furthermore, its mechanical parameters and dilation degree are dependent on mud or bitumen content. The shear dilation near the wellbore increases with the decreasing of confining pressure and the increasing of pore pressure, but that far from the wellbore is tiny. The tensile dilation can aree doaaaeaeoiesossodaoassadoaoaaeara
基金项目：国家杰出青年基全“石油工程岩石力学"（端号：51325402)和国家青年科学基全"超稠油SAGD开采陆相合泥岩夫层油砂
扩客机理及渗流评价研究”（端号：51404281)。
第一作者：
林伯括(1983-),中国石油大学(北京)石油工程学院副教段、硕导，主要从事朗油油砂地质力学和页岩旁石力学的研究工作。通讯地址：(102249)北京市昌平区府学路18号。电话；010-89732165。E-mail；linbotao@vip.163.com
金街（1972-)，中国石泌大学（北京）石油工程学院教授、博导，主要从事石油工程岩石力学的研究工作。通讯地址(102249）
通讯作者：
北京市昌平区府学路18 号。电话；010-89733799。E-mail;13701222683@vip.163.com
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