非均质油藏水驱开发效果研究
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摘要
为深入了解层间非均质性对油田水驱开发效果的影响,采用层间非均质三维物理模型进行室内水驱油实验,研究高、中、低渗层3层组合下,驱替压差、开采方式对不同渗透率储层的水驱效果。实验结果表明,随着驱替压差的增加,中、低渗层水驱波及效果越来越明显,高渗层水驱波及效果变化不大,提高驱替压差能有效启动中、低渗层的剩余油,合理的驱替压差对非均质性严重的储层开发有重要影响。不同开采方式对采收率影响较大,3层同采时采收率最低,高渗层的优势通道给中、低渗层的开发带来困难,分层系单采采收率最高,实际生产中有必要采取分层开采等措施来提高中、低渗层水驱开发效果。实验结果有效指导了渤海南部垦利A油田层系调整及增产措施制订,同时研究成果对后续新油田的方案编制及油田开发有重要指导意义。
In order to deeply understand the influence of interlayer heterogeneity on waterflood development effect of oilfield,the three dimensional physical model of interlayer heterogeneity was used to carry out laboratory water displacing oil experiment,and study the waterflood effect of displacement pressure difference and exploitation mode on different permeability reservoirs under the combination of high,middle and low permeability layers. The experimental results show that with the increase of displacement pressure difference,the waterflooding sweep effect of middle and low permeability layers becomes more and more obvious,while that of high permeability layer changes little;the increase of displacement pressure difference can effectively start the remaining oil in middle and low permeability layers,and the rational displacement pressure difference has an important effect on the development of highly heterogeneous reservoirs. Different exploitation modes have great influence on recovery factor; when the 3 layers are produced simultaneously,the recovery factor is the lowest; the dominant channel in high permeability layer brings difficulties to the development of middle and low permeability layers,and the recovery factor of separate layer production is the highest; therefore,in real production,it is necessary to take measures like separate layer production to improve the waterflood development effect of middle and low permeability layers. The experimental results effectively guide the adjustment of series of strata and the formulation of stimulation treatment of Kenli A oilfield in the south of the Bohai Sea,meanwhile,the study achievements are of great significance to the plan preparation and development of the future new oilfields.
In order to deeply understand the influence of interlayer heterogeneity on waterflood development effect of oilfield,the three dimensional physical model of interlayer heterogeneity was used to carry out laboratory water displacing oil experiment,and study the waterflood effect of displacement pressure difference and exploitation mode on different permeability reservoirs under the combination of high,middle and low permeability layers. The experimental results show that with the increase of displacement pressure difference,the waterflooding sweep effect of middle and low permeability layers becomes more and more obvious,while that of high permeability layer changes little;the increase of displacement pressure difference can effectively start the remaining oil in middle and low permeability layers,and the rational displacement pressure difference has an important effect on the development of highly heterogeneous reservoirs. Different exploitation modes have great influence on recovery factor; when the 3 layers are produced simultaneously,the recovery factor is the lowest; the dominant channel in high permeability layer brings difficulties to the development of middle and low permeability layers,and the recovery factor of separate layer production is the highest; therefore,in real production,it is necessary to take measures like separate layer production to improve the waterflood development effect of middle and low permeability layers. The experimental results effectively guide the adjustment of series of strata and the formulation of stimulation treatment of Kenli A oilfield in the south of the Bohai Sea,meanwhile,the study achievements are of great significance to the plan preparation and development of the future new oilfields.
引文
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[17]楚泽涵,黄隆基,高杰,等.地球物理测井方法与原理[M].北京:石油工业出版社,2010:13-16.
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[19]王家禄,沈平平,田玉玲,等.应用微型探针测量油藏模拟饱和度变化[J].测井技术,2004,28(2):99-103.
[20]张红欣,王建,吕思渊,等.胶结模型油藏物理模拟实验技术[J].石油勘探与开发,2004,31(增刊1):59-62.
[2]张继成,何晓茹,周文胜.大段合采油井层间干扰主控因素研究[J].西南石油大学学报(自然科学版),2015,37(4):101-106.
[3]鲜波,熊钰,石国新,等.薄层油藏合采层间干扰分析及技术对策研究[J].特种油气藏,2007,14(3):51-54.
[4]张方礼,许宁,于涛,等.多油层低渗油藏纵向非均质对油井产能影响研究[J].特种油气藏,2002,9(4):39-42.
[5]蔡晖,阳晓燕,张占华,等.层间干扰定量表征新方法在渤南垦利区域的应用[J].特种油气藏,2018,25(4):91-94.
[6]冯其红,王相,王端平,等.水驱油藏均衡驱替开发效果论证[J].油气地质与采收率,2016,23(3):83-88.
[7]杨勇,姜汉桥,马康.断块油藏平面动用均衡程度实验研究[J].科学技术与工程,2016,16(16):168-172.
[8]崔传智,姜华,段杰宏,等.基于层间均衡驱替的分层注水井层间合理配注方法[J].油气地质与采收率,2012,19(5):94-96.
[9]赵雅慧,邓君,石维民.濮城油田多油层强非均质油藏水驱开发研究[J].断块油气田,2003,10(1):53-54.
[10]莫建武,孙卫,杨希濮,等.严重层间非均质油藏水驱效果及影响因素研究[J].西北大学学报(自然科学版),2011,41(1):113-118.
[11]陈涛平,宋文玲,高明,等.中低渗透油层层间非均质性对提高采收率的影响[J].科学技术与工程,2010,10(21):5151-5154.
[12]于春生,李闽,乔国安.等.纵向非均质油藏水驱油实验研究[J].西南石油大学学报(自然科学版),2009,31(1):33-38.
[13]王明,杜利,国殿斌,等.层间非均质大型平面模型水驱波及系数室内实验研究[J].石油实验地质,2013,35(6):698-701.
[14]邓瑞健.储层平面非均质性对水驱油效果影响的实验研究[J].大庆石油地质与开发,2002,21(4):16-19.
[15]王小林,王杰祥.层状非均质油藏不稳定注水室内实验研究[J].特种油气藏,2009,16(4):79-83.
[16]石立华,高志军,薛颖,等.纵向非均质油藏水驱油实验研究新方法[J].油气地球物理,2012,10(2):17-19.
[17]楚泽涵,黄隆基,高杰,等.地球物理测井方法与原理[M].北京:石油工业出版社,2010:13-16.
[18]沈平平,王家禄,田玉玲,等.三维油藏物理模拟的饱和度测量技术研究[J].石油勘探与开发,2004,31(增刊1):71-76.
[19]王家禄,沈平平,田玉玲,等.应用微型探针测量油藏模拟饱和度变化[J].测井技术,2004,28(2):99-103.
[20]张红欣,王建,吕思渊,等.胶结模型油藏物理模拟实验技术[J].石油勘探与开发,2004,31(增刊1):59-62.