大港埕海油田“滩海模式”剩余油研究
|
摘要
认识和掌握剩余油分布规律,即明确高含水后期剩余油所在的空间位置、规模及其与储集层非均质性、注采状况之间的关系,是进一步提高驱油效率及采收率的前提和基础。结合滩海地区埕海油田"海油陆采"开发现状,综合分析埕海油田剩余油平面、垂向分布特征,首次将埕海油田剩余油分布模式定义为"滩海模式",并划分为难以效益开采型、水驱滞留型和水驱优势型,其中难以效益开采型分为特殊岩性型和深层油藏型;水驱滞留型分为井网难以控制型、层间差异型、单向受效型、局部微构造型、河道砂边部尖灭型、长水平段水平井动用不均型;水驱优势型分为沉积韵律控制型、夹层遮蔽型、底水稠油油藏水锥型、沉积相带控制型。研究认为,埕海油田剩余油平面上呈孤岛状或条带状,纵向上受非均质性及沉积韵律影响,为下一步剩余油挖掘和提高埕海油田采收率提供了支撑。
Understanding and mastering the distribution law of remaining oil,that is,defining the spatial location and scale of remaining oil in the late stage of high water cut and its relationship with reservoir heterogeneity and injection-production status,is the premise and basis for further improving oil displacement efficiency and recovery factor.Combining with the development status of producing marine oil on land in Shallow Water area of Chenghai Oilfield,the horizontal and vertical distribution characteristics of remaining oil in Chenghai Oilfield were comprehensively analyzed.For the first time,the remaining oil distribution pattern in Chenghai Oilfield was defined as shallow water mode,which is divided into three types:difficult-to-benefit exploitation,water drive retention and water drive dominant type.Among them,the difficult-to-benefit exploitation type was divided into special lithology type and deep reservoir type.The water drive retention type was divided into uncontrollable well pattern,interlayer difference type,unidirectional effect type,local microtectonics type,river channel sand edge pinch-out type and the type of horizontal well production heterogeneity of long horizontal section.The water drive dominant type was divided into sedimentary rhythm control type,intercalation sheltering type,bottom water heavy oil reservoir water-cone type,and sedimentary facies belt control type.The results show that the remaining oil in Chenghai Oilfield distributes as isolated islands or strips on the plane,and is affected by heterogeneity and sedimentary rhythm in vertical direction,which provides support for further tapping potential of remaining oil and improving the recovery efficiency of Chenghai Oilfield.Therefore,the recovery efficiency of Chenghai Oilfield is improved.
Understanding and mastering the distribution law of remaining oil,that is,defining the spatial location and scale of remaining oil in the late stage of high water cut and its relationship with reservoir heterogeneity and injection-production status,is the premise and basis for further improving oil displacement efficiency and recovery factor.Combining with the development status of producing marine oil on land in Shallow Water area of Chenghai Oilfield,the horizontal and vertical distribution characteristics of remaining oil in Chenghai Oilfield were comprehensively analyzed.For the first time,the remaining oil distribution pattern in Chenghai Oilfield was defined as shallow water mode,which is divided into three types:difficult-to-benefit exploitation,water drive retention and water drive dominant type.Among them,the difficult-to-benefit exploitation type was divided into special lithology type and deep reservoir type.The water drive retention type was divided into uncontrollable well pattern,interlayer difference type,unidirectional effect type,local microtectonics type,river channel sand edge pinch-out type and the type of horizontal well production heterogeneity of long horizontal section.The water drive dominant type was divided into sedimentary rhythm control type,intercalation sheltering type,bottom water heavy oil reservoir water-cone type,and sedimentary facies belt control type.The results show that the remaining oil in Chenghai Oilfield distributes as isolated islands or strips on the plane,and is affected by heterogeneity and sedimentary rhythm in vertical direction,which provides support for further tapping potential of remaining oil and improving the recovery efficiency of Chenghai Oilfield.Therefore,the recovery efficiency of Chenghai Oilfield is improved.
引文
[1]韩大匡.准确预测剩余油相对富集区提高油田注水采收率研究[J].石油学报,2007,28(2):73-78.
[2]刘宝珺,谢俊,张金亮.我国剩余油技术研究现状与进展[J].西北地质,2004,37(4):1-6.
[3]俞启泰.关于剩余油研究的探讨[J].石油勘探与开发,1997,24(2):46-50.
[4]林承焰,孙廷彬,董春梅,等.基于单砂体的特高含水期剩余油精细表征[J].石油学报,2013,34(6):1131-1136.
[5]高博禹,彭仕宓,王建波.剩余油形成与分布的研究现状及发展趋势[J].特种油气藏,2004,11(4):7-11.
[6]李洪玺,刘全稳,温长云,等.剩余油分布及其挖潜研究综述[J].特种油气藏,2006,13(3):8-11.
[7]王建富,刘天鹤,甄华强,等.埕海油田沙一段低渗泥灰岩油藏水平井开发技术展望[J].中国石油和化工,2012(5):48-49.
[8]王秀娟,彭珏,刘卫丽.大庆长垣外围油田剩余油类型及分布规律[J].大庆石油地质与开发,2011,30(5):46-51.
[9]骆雯.大庆长垣外围油田剩余油类型及分布特征研究[J].长江大学学报(自然科学版),2014,11(8):82-84.
[10]于洪文.大庆油田北部地区剩余油研究[J].石油学报,1993,14(1):72-80.
[11]付国民,董冬,王锋,等.河流相储层剩余油成因类型及分布模式[J].成都理工大学学报(自然科学版),2008,35(5):502-506.
[12]李宁,赵连水,刘竹杰,等.大港关家堡曲流河沉积储层预测及控制因素[J].四川地质学报,2015,35(3):363-366.
[13]陈程,宋新民,李军.曲流河点砂坝储层水流优势通道及其对剩余油分布的控制[J].石油学报,2012,33(2):257-263.
[14]陈程,贾爱林,孙义梅.厚油层内部相结构模式及其剩余油分布特征[J].石油学报,2000,21(5):99-102.
[15]孙焕泉.油藏动态模型和剩余油分布模式[M].北京:石油工业出版社,2002:120-140.
[16]李宁,牟晓慧,黄国梁,等.大港油田滩海区域ZH5断块厚砂体夹层研究[J].地质与资源,2018,27(4):383-388.
[17]唐恩高,杨俊茹,张贤松.“疏导控锥”提高底水稠油油藏采收率研究[J].钻采工艺,2011,34(2):36-38.
[18]林承焰,余成林,董春梅,等.老油田剩余油分布——水下分流河道岔道口剩余油富集[J].石油学报,2011,32(5):829-835.
[19]石占中,张一伟,熊琦华,等.大港油田港东开发区剩余油形成与分布的控制因素[J].石油学报,2005,26(1):79-86.
[20]胡志成,胡望水,雷秋艳,等.高集油田剩余油影响因素及其分布研究[J].石油天然气学报,2013,35(12):50-55.
[2]刘宝珺,谢俊,张金亮.我国剩余油技术研究现状与进展[J].西北地质,2004,37(4):1-6.
[3]俞启泰.关于剩余油研究的探讨[J].石油勘探与开发,1997,24(2):46-50.
[4]林承焰,孙廷彬,董春梅,等.基于单砂体的特高含水期剩余油精细表征[J].石油学报,2013,34(6):1131-1136.
[5]高博禹,彭仕宓,王建波.剩余油形成与分布的研究现状及发展趋势[J].特种油气藏,2004,11(4):7-11.
[6]李洪玺,刘全稳,温长云,等.剩余油分布及其挖潜研究综述[J].特种油气藏,2006,13(3):8-11.
[7]王建富,刘天鹤,甄华强,等.埕海油田沙一段低渗泥灰岩油藏水平井开发技术展望[J].中国石油和化工,2012(5):48-49.
[8]王秀娟,彭珏,刘卫丽.大庆长垣外围油田剩余油类型及分布规律[J].大庆石油地质与开发,2011,30(5):46-51.
[9]骆雯.大庆长垣外围油田剩余油类型及分布特征研究[J].长江大学学报(自然科学版),2014,11(8):82-84.
[10]于洪文.大庆油田北部地区剩余油研究[J].石油学报,1993,14(1):72-80.
[11]付国民,董冬,王锋,等.河流相储层剩余油成因类型及分布模式[J].成都理工大学学报(自然科学版),2008,35(5):502-506.
[12]李宁,赵连水,刘竹杰,等.大港关家堡曲流河沉积储层预测及控制因素[J].四川地质学报,2015,35(3):363-366.
[13]陈程,宋新民,李军.曲流河点砂坝储层水流优势通道及其对剩余油分布的控制[J].石油学报,2012,33(2):257-263.
[14]陈程,贾爱林,孙义梅.厚油层内部相结构模式及其剩余油分布特征[J].石油学报,2000,21(5):99-102.
[15]孙焕泉.油藏动态模型和剩余油分布模式[M].北京:石油工业出版社,2002:120-140.
[16]李宁,牟晓慧,黄国梁,等.大港油田滩海区域ZH5断块厚砂体夹层研究[J].地质与资源,2018,27(4):383-388.
[17]唐恩高,杨俊茹,张贤松.“疏导控锥”提高底水稠油油藏采收率研究[J].钻采工艺,2011,34(2):36-38.
[18]林承焰,余成林,董春梅,等.老油田剩余油分布——水下分流河道岔道口剩余油富集[J].石油学报,2011,32(5):829-835.
[19]石占中,张一伟,熊琦华,等.大港油田港东开发区剩余油形成与分布的控制因素[J].石油学报,2005,26(1):79-86.
[20]胡志成,胡望水,雷秋艳,等.高集油田剩余油影响因素及其分布研究[J].石油天然气学报,2013,35(12):50-55.