学术
石港油田古近系阜宁组二段低渗透砂岩储集层裂缝研究
季宗镇[1] 窦之林[2] 解秋红[1] 马晓明[1]
[1]中国石油大学地球资源与信息学院,山东东营257061 [2]中国石化西北分公司,乌鲁木齐830011
摘 要:
岩石的破裂、构造裂缝的产生主要受构造应力场的影响与控制。在构造应力场数值模拟的基础上,基于岩石破裂准则,预测了石港地区古近系阜宁组二段的储集层裂缝参数。裂缝在阜宁组沉积晚期的古构造应力场下产生,在断层附近最为发育,走向以近北北东向为主。现今应力对裂缝具有改造作用,裂缝的开度、密度、孔隙度和渗透率的高值区位于石3-石6断块与石4断块西北部、金4断块北部、石11-石5断块中部和南部。[著者文摘]
文章出处:
《新疆石油地质》-2007年28卷4期 -483-485页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1001-3873（2007）04-0483-03
Prediction of Fracture Parameter in Low Permeability Sandstone Reservoir of Fu-2 Member of Paleogene in Shigang Oilfield
JI Zong-zhen, DOU Zhi-lin, XIE Qiu-hong, MA Xiao-ming （1.Faculty of Geo-Resources and Information, China University of Petroleum, Dongying, Shandong 257061, China; 2.Northwest Company, Sinopec, Urumqi, Xinjiang 830011, China）
Abstract:
Rock burst and structural fracture are influenced and controlled mainly by tectonic stress field. On the basis of stress field numerical simulation and rock fracture rules, the fracture parameters of Fu-2 member reservoir of Paleogene in Shigang oilfield are predicted. The study shows that the fractures occurred under the paleo-stress field in late Funing episode, and were mainly distributed near the Shigang fault. The present stress field is of modified effect on the fractures, allowing the high values of fracture aperture, fracture density, porosity and permeability to appear in the northwestern Shi 3-Shi 6 fault block and Shi 4 fault block, the northern Jin 4 fault block and the middle and southern Shi 11-Shi 5 fault block.[著者文摘]
Key words:
Shigang oilfield; tectonic stress field; fracture prediction; finite element analysis
更多>>免费文章
cqvip.com