摘要
以冶里组和亮甲山组为目标层,通过统计学、沉积学和层序地层学等理论方法,对华北东部白云岩型储层品质、层位判别以及目标层储层预测等的系统研究结果表明,华北东部下古生界白云岩物性最佳(孔隙度平均值为6.73%,渗透率平均值为126.77×10-3μm2),而冶里组(O1y)和亮甲山组(O1l)是下古生界中白云岩最发育的层位,其白云岩厚度分别占下古生界地层厚度的73.6%和64.9%,且储层物性较好,孔隙度、渗透率分别为:冶里组(O1y)5.34%和357×10-3μm2;亮甲山组(O1l)5.89%和97×10-3μm2,因此是重点预测层位。综合考虑白云岩有利的沉积环境、厚度规模、裂缝和溶蚀作用等因素认为,冶里组的潜在白云岩型储层位于黄骅坳陷北部、济阳坳陷东北部、内黄隆起-东濮坳陷以及吕梁隆起西南部;亮甲山组的潜在白云岩型储层位于冀中坳陷和沧县隆起北部(京津唐地区)、太行隆起中部-临清坳陷、内黄隆起-东濮坳陷、鲁西隆起区的济南-临沂地区以及吕梁隆起西南部。此项研究对前古近系油气战略资源选区具有重要意义。
Dolomite reservoirs are related to dolomitization. Taking the Yeli and Liangjiashan formations as the target, the authors have undertaken a general research about the dolomite quality, strata identification and the prediction of the aim reservoir by statistics, sedimentology and sequence stratigraphy. The study indicates that the dolostone has the best physical property in Lower Paleozoic. Its average porosity and permeability are 6.73 % and 126.77 ×10^-3μm^2 respectively. The Yeli and Liangjiashan formations are the most favored layers of dolomites in Lower Paleozoic. Their thickness percentages of dolomites are 73.6 and 64.9% respectively. The reservoirs have good physical properties and are the most important prediction layers. The analysis of the two formations verifies that the average porosity and permeability of Yell Formation are 5.34% and ×10^-3μm^2 and those of Liangjiashan Formation are 5. 89% and 97×10^-3μm^2. The prediction results show that the potential dolomite reservoirs of the Yeli Formation are located in the north of Huanghua Depression, the northeast of Jiyang Depression, the joint part between the Neihuang Uplift and the Dongpu Depression and the southwest of the Luliang Uplift; and those of the Liangjiashan Formation are located in the north of the Jizhong Depression and the Cangxian Uplift （the area among Beijing, Tianjin and Tangshan）, part area between the central Taihang Uplift and the Linqing Depression, part area between the Neihuang Uplift and the Dongpu Depression, the area of Jinan-Linyi in the Luxi Uplift and the western of the Luliang Uplift. The integrated study about dolomite reservoir will provide necessary information for oil/gas stratagem precinct of Lower Paleozoic in the eastern part of North China.
出处
《地质科技情报》
CAS
CSCD
北大核心
2007年第5期61-67,共7页
Geological Science and Technology Information
基金
国家油气专项项目(XQ-2004-03-04)
中国地质大学湖北省油气重点实验室开放基金项目(YQ2006KF18)
关键词
自云岩型储层
冶里组
亮甲山组
华北东部
dolomite reservoir
Yeli Formation, Liangjiashan Formation
the eastern part of North China
作者简介
杨赏（1981-），女，现正攻读矿产普查与勘探专业硕士学位，主要从事盆地分析与沉积学研究。
