|Table of Contents|

Characteristics of Chang-6 Oil-bearing Formation Changes After Long Term Waterflood Development in Ansai Oilfield(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2010年第03期
Page:
239-244
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
Characteristics of Chang-6 Oil-bearing Formation Changes After Long Term Waterflood Development in Ansai Oilfield
Author(s):
JIN Wen-qi WANG Xiao-jun HE Feng-peng CHEN Tang-suo
(No.1 Oil Recovery Factory, Changqing Oilfield Company, China National Petroleum Corporation,Yan'an 716000, Shaanxi, China)
Keywords:
low-permeability reservoir pore structure wettability waterflood development permeability Chang-6 Oil-bearing Formation Ansai Oilfield
PACS:
TE122.2;P618
DOI:
-
Abstract:
Based on waterflood development simulated experiment and field data analyses, core was analyzed by mercury injection experiment and physical-mechanical test, characteristics of Chang-6 Oil-bearing Formation changes after long term waterflood development in Ansai Oilfield was discussed. The result showed that permeability evidently decreased with the increase of water injection rate as a whole, the average rate of change was 4.72%; porosity increased by an average of 0.15% and there was no apparent change in the type of pore combination; efficiency of mercury withdraw decreased by an average of 4.39%; the median radius of throats diminished, however, there was no significant change of distribution characteristics; reservoir wettability transformed from lipophile to hydrophile on the whole. Characteristics of low-permeability reservoir varied after long term waterflood development. The mechanisms were that the clay particle and interstitial material in reservoir dissolved, crushed and moved by the action of injected water washing, one part was carried away by injected water, and the another part still stayed in thin pore-throat, caused the pore connectivity worse and the heterogeneity of reservoir was stronger; the variation of the properties of reservoir rock and pore-throat surfaces caused the change of reservoir wettability.

References:

[1] 彭仕宓,尹 旭,张继春,等.注水开发中黏土矿物及其岩石敏感性的演化模式[J].石油学报,2006,27(4):71-75.
[2] 黄思静,杨永林,单钰铭,等.注水开发对砂岩储层孔隙结构的影响[J].中国海上油气(地质),2000,14(2):122-128.
[3] 李继红,曲志浩,陈清华.注水开发对孤岛油田储层微观结构的影响[J].石油实验地质,2001,23(4):424-428.
[4] 杨永林,黄思静,单钰铭,等.注水开发对储层砂岩粒度分布的影响[J].成都理工学院学报,2002,29(1):56-60.
[5] 李存贵,徐守余.长期注水开发油藏的孔隙结构变化规律[J].石油勘探与开发,2003,30(2):94-96.
[6] 郭 莉,王延斌,刘伟新,等.大港油田注水开发过程中油藏参数变化规律分析[J].石油实验地质,2006,28(1):85-90.
[7] 王天琦,施泽进,郑红军,等.注水前后储层微观孔隙结构的分形表征[J].石油天然气学报,2005,27(2):242-244.
[8] 李 浩,王香文,刘双莲.老油田储层物性参数变化规律研究[J].西南石油大学学报:自然科学版,2009,31(2):85-89.
[9] 付国民,李 鑫,梁志录,等.油层砂岩成岩作用及其对储层性质的影响[J].西安科技大学学报,2007,27(3):377-381.
[10] 苏玉亮,李东霞,郝永卯,等.黏弹性稠油的松弛特性对其注水开发的影响[J].西安石油大学学报:自然科学版,2007,22(2):146-148.
[11] 冯娟萍,郭艳琴,董海波,等.何家集区延长组储层特征及其主控因素分析[J].西安科技大学学报,2009,29(2):195-199.
[12] 张洪波,王志章,戴胜群,等.水驱前后油藏参数变化机理研究[J].石油天然气学报,2005,27(4):665-666.
[13] 赵 虹,党 犇,党永潮,等.安塞油田延长组储集层特征及物性影响因素分析[J].地球科学与环境学报,2005,27(4):45-48.
[14] 赵 虹,党 犇,陈永胜,等.鄂尔多斯盆地姬塬地区三叠系延长组长2油层组储层特征及影响因素[J].西安科技大学学报,2009,29(5):579-583.
[15] 刘学刚,崔智林,王 娟.安塞油田塞160井区长6油层组沉积微相研究[J].西北地质,2008,41(3):86-91.
[16] 朱玉双,曲志浩,孔令荣,等.安塞油田坪桥区、王窑区长6油层储层特征及驱油效率分析[J].沉积学报,2000,18(2):279-283.
[17] 金拴联,蒋远征,杨秋莲,等.安塞油田注水开发技术研究[J].西北地质,2008,41(1):115-120.
[18] 许建红,程林松,鲍 朋,等.鄂尔多斯盆地三叠系延长组油藏地质特征[J].西南石油大学学报:自然科学版,2007,29(5):13-17.
[19] 姜 亭,魏仙样,杭 健,等.延长油田郑庄区长6油层组小层对比划分在注水开发中的应用[J].西北地质,2007,40(3):85-91.
[20] 蒋远征,金拴联,杨晓刚,等.特低渗油田注水效果存水率和水驱指数评价法[J].西南石油大学学报:自然科学版,2009,31(6):63-65.
[21] 黄福堂.油田注水开发过程中储层岩石表面性质变化因素研究[J].石油勘探与开发,1985,12(3):45-50.
[22] 贺凤云,于天忠,张继芬,等.水驱对储层和地层原油性质的影响[J].大庆石油学院学报,2002,26(2):21-23.
[23] 王 锐,岳湘安,尤 源,等.裂缝性低渗油藏周期注水与渗吸效应实验[J].西安石油大学学报:自然科学版,2007,22(6):56-59.
[24] 刘 辉,何顺利,李俊键,等.特低渗油藏水驱开发效果评价方法研究[J].西南石油大学学报:自然科学版,2009,31(1):58-60.
[25] 闫 健,张宁生,刘晓娟.低渗透油田超前注水增产机理研究[J].西安石油大学学报:自然科学版,2008,23(5):43-45.
[26] 单华生,姚光庆,周锋德.储层水洗后结构变化规律研究[J].海洋石油,2004,24(1):62-66.
[27] 李 军,蔡 毅,崔云海.长期水洗后储层孔隙结构变化特征[J].油气地质与采收率,2002,9(2):68-70.
[28] 徐守余.渤海湾盆地胜坨油田二区储层微观渗流场演化研究[J].石油实验地质,2003,25(4):381-384.

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Last Update: 2010-09-20