苏北复杂断块油田CO2吞吐提高采收率  

IMPROVING RECOVERY VIA CO_2 HUFF AND PUFF IN COMPLEX FAULT BLOCK OILFIELD IN SUBEI AREA

作　　者：刘伟[1] 秦学成[1] 唐建信[1] 李实[2] 孙雷[3] 

机构地区：[1]中国石油化工股份有限公司华东分公司,江苏南京210011 [2]中国石油勘探开发研究院,北京100083 [3]石油气藏地质及开发工程国家重点实验室·西南石油大学,四川成都610500

出　　处：《西南石油大学学报（自然科学版）》2009年第2期100-104,共5页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：“油气藏地质及开发工程”国家重点实验室基金项目(PLN018)

摘　　要：苏北复杂断块油田具有"小、碎、深、薄、低"的特点,油田开发的突出问题是油田开发程度低,含水率高,油藏压力下降快,尚有2/3的低渗、稠油油藏的地质储量未能开发动用。由于含油面积小,储量丰度低,大油田普遍适用的提高采收率方法技术,并不完全适用于复杂小断块油田。针对这一特点,利用苏北地区丰富的CO2资源优势,开展了CO2单井吞吐提高采收率机理及开发应用研究,通过注CO2吞吐提高采收率机理物理模拟、数值模拟和应用技术分析,形成了适合苏北复杂断块油田低渗、高含水和稠油三种类型油藏的CO2单井吞吐提高采收率技术,经矿场试验取得了较好的效果。Complex fault block reservoirs in Subei presents the features of small,broken,deep,thin and low ones,prominent problems of production is low degree of production,high water cut,quick decrease of reservoir pressure,and two thirds of geological reserves that is in low permeability and high viscosity reservoirs are undeveloped yet.Because of the small oil-bearing area and low reserves abundance,the method of improving recovery used in big oilfield is not suitable for small complex fault block oilfield.In the light of above mentioned situation,by using abundant CO2 resources in Subei area,research and application of improving recovery rate by using CO2 huff-puff is carried out.Through experimental simulation,numerical simulation and compositive analysis,a set of improving recovery technologies via huff-puff suitable for complex fault block oilfield are developed and good results through field application are obtained.

关 键 词：复杂断块油田 CO2 单井吞吐 强化采油 提高采收率 苏北地区 

分 类 号：TE327[石油与天然气工程—油气田开发工程]