大庆喇嘛甸油田北西块储层非均质性研究
摘要
喇嘛甸油田从沉积上来讲距物源较近,故油层发育较厚,层内非均质性也比较严重。由于储层的严重非均质性,导致层内矛盾和层间矛盾日益加剧,常规措施效果变差、产量递减速度增加、储采失衡、剩余可采储量采出难度不断加大,严重影响了储层的采收率。本文利用喇嘛甸油田北西块作为研究区,从砂体的成因入手划分砂体类型,分析各种砂体储层的非均质类型及其表征方法。根据不同砂体类型的沉积特征分析储层在层内、平面、层间的非均质特征,并将砂体的非均质特征与井网井距相结合,根据注采方向与砂体沉积方向的关系和隔夹层的分布状况,综合分析喇嘛甸油田北西块动态开发资料,判断剩余油在垂向上的富集层位、在平面上的富集区域。根据剩余油形成的原因,对油水井采取相应的挖潜措施。
The reservoir of Lamadian Oilfield is very thick because it is very close to the source area with great in-layer heterogeneities. Due to the great heterogeneities, in-layer and interlayer interference is getting more and more serious, and the development result by conventional methods is becoming worse, for the recovery is reduced because of production decline, unbalanced reserve and production and more difficulties to produce the remaining recoverable reserves. We use areas which is in the North West block in Lamadian Oilfield as the study area, beginning with the research of genetic classification of sandstone types, analysising on reservoir heterogeneity types and characteristics of various sandstones is covered in this paper. According to depositional characteristics of various sandstone types, in-layer heterogeneity, interlayer heterogeneity and areal heterogeneity are analyzed. Integrated with well pattern, well spacing, correlation of injection-production direction and sandstone deposition direction, distribution of barriers and interbeds, dynamic performance, vertical abundance horizons and areal abundance zones of remaining oil are determined. Based on the remaining oil genesis, corresponding stimulation methods concerning injectors and producers are developed.
The reservoir of Lamadian Oilfield is very thick because it is very close to the source area with great in-layer heterogeneities. Due to the great heterogeneities, in-layer and interlayer interference is getting more and more serious, and the development result by conventional methods is becoming worse, for the recovery is reduced because of production decline, unbalanced reserve and production and more difficulties to produce the remaining recoverable reserves. We use areas which is in the North West block in Lamadian Oilfield as the study area, beginning with the research of genetic classification of sandstone types, analysising on reservoir heterogeneity types and characteristics of various sandstones is covered in this paper. According to depositional characteristics of various sandstone types, in-layer heterogeneity, interlayer heterogeneity and areal heterogeneity are analyzed. Integrated with well pattern, well spacing, correlation of injection-production direction and sandstone deposition direction, distribution of barriers and interbeds, dynamic performance, vertical abundance horizons and areal abundance zones of remaining oil are determined. Based on the remaining oil genesis, corresponding stimulation methods concerning injectors and producers are developed.
引文
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2、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.
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13、赵翰卿.储层非均质体系、砂体内部建筑结构和流动单元研究思路探讨[J].大庆石油地质与开发,2002,21(06):16-18.
14、张宝胜,张淑洁,钟玲.喇萨杏油田各类油层水洗状况[J].大庆石油地质与开发,2002,21(06):40-43.
15、张世奇,任延广.松辽盆地中生代沉积基准面变化研究[J].长安大学学报(地球科学版),2003,25(02):1-5.
16,England W A,Mackenzie A S,Mann D,et al.The movement andentrapment of petroleum fluids in the subsurface[J].Journal of Geological Society,1987,144(2):327-347.
17,Miall A D.Rescrvoir heterogeneities in fluvial sandstones.Lesson fromoutcrop studies[J].Aapgbulletin,1998,72(6):6822-6971.
18,Miall A D.Testing for eustatic sea-level control in the Precambrian sedimentary record[J].Sedimentary Geology,2005,176:9-16.
19,Miall A D.Reconstructing the architecture and sequence stratigraphy of the preserved fluvial record as a tool for reservoir development.A reality check[J].Aapgbulletin,2006,90:989-1002.
20,Thomas F Moslow,Graham R Davies.Turbidite reservoir facies in the Lower Triassic M on the Formation,west-central Albcrta[J].Bulletin of Canadian Petroleum Geology,1997,45(4):50-53.
2、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.
3、郭巍,刘招君,董惠民,等.松辽盆地层序地层特征及油气聚集规律[J].吉林大学学报(地球科学版),2004,34(02):216-221.
4、黄修平,姜喜庆,赵伟.喇嘛甸油田河流相储层流动单元划分方法[J].大庆石油地质与开发,2002,21(02):7-8.
5、韩伟东,黄伏生,艾颖,等.喇嘛甸油田剩余油挖潜方法[J].大庆石油地质与开发,2002,21(03):41-43.
6、李继庆,姜喜庆,杜晓明,等.精细地质研究在聚合物驱开发中的应用[J].大庆石油地质与开发,2001,20(02):57-59.
7、李兴国,胡广斌,李继庆,等.喇嘛甸油田葡Ⅰ1-2油层聚合物驱综合挖潜方法[J].大庆石油地质与开发,2002,21(2):66-69.
8、穆龙新,贾爱林.储层精细研究方法[M].北京:石油工业出版社,2000,3-4.
9、钱杰.精细地质研究小层数据库中夹层的识别[J].油气田地面工程,2004,23(1):46.
10、钱杰,冯文光,董志林,等.大庆萨尔图中部油田主力油层单元间夹层发育特征[J].地球科学与环境学报,2005,27(3):23-25.
11、邢顺诠,姜洪启.松辽盆地陆相砂岩储集层性质与成岩作用.[M]黑龙江科学技术出版社,1993,28.
12、于翠玲,林承焰.储层非均质性研究进展[J].油气地质与采收率,2007,7:16-18.
13、赵翰卿.储层非均质体系、砂体内部建筑结构和流动单元研究思路探讨[J].大庆石油地质与开发,2002,21(06):16-18.
14、张宝胜,张淑洁,钟玲.喇萨杏油田各类油层水洗状况[J].大庆石油地质与开发,2002,21(06):40-43.
15、张世奇,任延广.松辽盆地中生代沉积基准面变化研究[J].长安大学学报(地球科学版),2003,25(02):1-5.
16,England W A,Mackenzie A S,Mann D,et al.The movement andentrapment of petroleum fluids in the subsurface[J].Journal of Geological Society,1987,144(2):327-347.
17,Miall A D.Rescrvoir heterogeneities in fluvial sandstones.Lesson fromoutcrop studies[J].Aapgbulletin,1998,72(6):6822-6971.
18,Miall A D.Testing for eustatic sea-level control in the Precambrian sedimentary record[J].Sedimentary Geology,2005,176:9-16.
19,Miall A D.Reconstructing the architecture and sequence stratigraphy of the preserved fluvial record as a tool for reservoir development.A reality check[J].Aapgbulletin,2006,90:989-1002.
20,Thomas F Moslow,Graham R Davies.Turbidite reservoir facies in the Lower Triassic M on the Formation,west-central Albcrta[J].Bulletin of Canadian Petroleum Geology,1997,45(4):50-53.