湖相滑塌浊积岩储层构型精细解剖
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摘要
浊积岩等岩性油气藏逐渐成为油气勘探与开发的重要目标。但是目前,国内外对湖相浊积岩的储层构型研究相对较少,难以满足浊积岩油藏精细描述的需求。为此,文中以东营凹陷现河庄油田河146断块沙三中亚段薄层浊积岩为例,建立滑塌浊积岩相储层构型划分方案,并分级次进行精细刻画。结果表明:1)无根型浊积岩发育期次多,规模小,扇体在垂向上局部叠置。复合扇体长580~2 000 m,宽350~1 000 m,厚2.4~5.1 m,面积0.3~1.2 km2;单一扇体长300~700 m,宽180~350 m,面积0.1~0.8 km2。2)有根型浊积岩中,浊积水道平面分布主要受底形影响,发育期次多,规模较大,侧向摆动快,垂向下切作用弱。水道复合体宽450~1 200 m,单一浊积水道宽120~450 m,厚1.6~7.2 m。最终,建立了符合研究区地质规律的构型模式,为浊积岩油藏精细描述及储层内部结构解剖提供了可靠的地质依据。
Lithologic reservoirs gradually become an important target of exploration. At present, correlation studies are rare on reservoir architecture of lacustrine turbidites in China and abroad, which can hardly meet the needs of fine description of turbidite reservoirs. Therefore, the structure types of lacustrine turbidites are investigated respectively and hierarchically in the middle of E2 s3 in He146 Fault Block of Xianhezhuang Oilfield. The results indicate that turbidite fan without sediment-supplying channel has the characteristics of multi-stages, small scale and vertical superimposition. Superimposed fans are 580 -2 000 m long, 350-1 000 m wide, 2.4-5.1 m thick and 0.26-1.2 km2; the single fan is 0.08-0.8 km2, 300-700 m long and 180-350 m wide; the lateral distribution of turbidity channels is controlled by bottom configuration with the characteristics of multi-stages, big scale, rapid lateral migration and vertical erosion; the superimposed channels are 450-1 200 m wide while the single channel is usually 120-450 m wide and 1.6-7.2 m thick. Finally, the architecture mode consistent with local geological laws is established to guide the fine description and analyze the internal structure of turbidite reservoirs.
Lithologic reservoirs gradually become an important target of exploration. At present, correlation studies are rare on reservoir architecture of lacustrine turbidites in China and abroad, which can hardly meet the needs of fine description of turbidite reservoirs. Therefore, the structure types of lacustrine turbidites are investigated respectively and hierarchically in the middle of E2 s3 in He146 Fault Block of Xianhezhuang Oilfield. The results indicate that turbidite fan without sediment-supplying channel has the characteristics of multi-stages, small scale and vertical superimposition. Superimposed fans are 580 -2 000 m long, 350-1 000 m wide, 2.4-5.1 m thick and 0.26-1.2 km2; the single fan is 0.08-0.8 km2, 300-700 m long and 180-350 m wide; the lateral distribution of turbidity channels is controlled by bottom configuration with the characteristics of multi-stages, big scale, rapid lateral migration and vertical erosion; the superimposed channels are 450-1 200 m wide while the single channel is usually 120-450 m wide and 1.6-7.2 m thick. Finally, the architecture mode consistent with local geological laws is established to guide the fine description and analyze the internal structure of turbidite reservoirs.
引文
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[19]FUNK J E,SLATT R M,PYLES D R.Quantification of static connectivity between deep-water channels and stratigraphically adjacent architectural elements using outcrop analogs[J].AAPG Bulletin,2012,96(2):277-300.
[20]李志鹏,杨勇,侯加根,等.渤南五区浊积水道砂体储层构型研究[J].中国石油大学学报(自然科学版),2015,39(5):36-42.
[21]赵晓明,吴胜和,刘丽,等.尼日尔三角洲盆地Akpo油田新近系深水浊积水道储层构型表征[J].石油学报,2012,33(6):1049-1058.
[22]王金铎,韩文功,于建国,等.东营凹陷沙三段浊积岩体系及其油气勘探意义[J].石油学报,2003,24(6):24-29.
[23]饶孟余,钟建华,王海侨,等.山东东营牛庄洼陷沙三中亚段浊积砂体储层特征及影响因素[J].现代地质,2004,18(2):256-262.
[24]姚健,杜晓峰,郑敬贵,等.辽东湾地区浊积扇体识别及储层地震描述方法研究[J].断块油气田,2012,19(6):718-721.
[25]MUTTIE E,NORMARK W R.Comparing examples of modern and ancient turbidite systems:problems and concepts[M].London:Graham and Trotman,1987:1-38.
[26]孙淑艳,朱应科,沈正春.东营凹陷东部浊积岩储层地震识别技术及描述思路[J].油气地球物理,2015,13(2):1-6.
[27]于正军,董冬冬,余红,等.浊积岩分序级描述技术及其在东营凹陷油气勘探中的应用[J].地球物理学进展,2012,27(3):1086-1093.
[28]MAYALL M,LONERGAN L,BOWMAN A.The response of turbidite slope channels to growth-induced seabed topography[J].AAPG Bulletin,2010,94(7):1011-1030.
[2]MIALL A D.Architectural elements and bounding surfaces in fluvial deposits:anatomy of the Kayenta formation(lower Jurassic),southwest Colorado[J].Sedimentary Geology,1988,55(3/4):233-240,247-262.
[3]MIALL A D,JONES B G.Fluvial architecture of the Hawkesbury Sandstone(Triassic),Near Sydney,Australia[J].Journal of Sedimentary Research,2003,73(4):531-545.
[4]蒋平,吕明胜,王国亭.基于储层构型的流动单元划分:以扶余油田东5-9区块扶杨油层为例[J].石油实验地质,2013,35(2):213-219.
[5]ALLEN J R L.Studies in fluviatile sedimentation:bars,bar-complexes and sandstone sheets(low-sinuosity braided streams)in the Brownstones,Welsh Borders[J].Sedimentary Geology,1983,33(4):237-293.
[6]焦巧平,高建,侯加根,等.洪积扇相砂砾岩体储层构型研究方法探讨[J].地质科技情报,2009,28(6):57-63.
[7]王燕,杨少春,温静,等.锦99块杜家台油层层序构型及其沉积演化[J].断块油气田,2016,23(1):11-15.
[8]贾珍臻,林承焰,董春梅,等.大庆升平油田葡萄花油层葡一油组浅水三角洲储层构型研究[J].中国石油大学学报(自然科学版),2014,38(6):9-17.
[9]李志鹏,林承焰,董波,等.河控三角洲水下分流河道砂体内部建筑结构模式[J].石油学报,2012,33(1):101-105.
[10]伊振林,吴胜和,杜庆龙,等.冲积扇储层构型精细解剖方法:以克拉玛依油田六中区下克拉玛依组为例[J].吉林大学学报(地球科学版),2010,40(4):939-946.
[11]JIAO Y,YAN J,LI S,et al.Architecture units and heterogeneity of channel reservoirs in the Karamay Formation,outcrop area of Karamay oil field,Junggar Basin,northwest China[J].AAPG Bulletin,2005,89(4):529-545.
[12]郑荣才,李云,戴朝成,等.白云凹陷珠江组深水扇砂质碎屑流沉积学特征[J].吉林大学学报(地球科学版),2012,42(6):1581-1589.
[13]徐冠华,蔡进功,盖蓓,等.滨南地区沙三段重力流沉积特征及含油气性分析[J].断块油气田,2015,22(3):282-286.
[14]赵密福,信荃麟,刘泽容.惠民凹陷临南洼陷滑塌浊积岩的分布规律及其控制因素[J].石油实验地质,2001,23(3):267-271.
[15]赵宁,黄江琴,李栋明,等.远源缓坡型薄层细粒浊积岩沉积规律:以松南西斜坡大布苏地区青一段地层为例[J].沉积学报,2013,31(2):291-301.
[16]张迎朝,王立锋,李绪深,等.莺歌海盆地砂质块体搬运沉积及其天然气聚集[J].石油实验地质,2016,38(2):189-196.
[17]ALPAK F O,BARTON M D,NARUK S J.The impact of fine-scale turbidite channel architecture on deep-water reservoir performance[J].AAPG Bulletin,2013,97(2):251-284.
[18]赵晓明,吴胜和,刘丽.西非陆坡区深水复合水道沉积构型模式[J].中国石油大学学报(自然科学版),2012,36(6):1-5.
[19]FUNK J E,SLATT R M,PYLES D R.Quantification of static connectivity between deep-water channels and stratigraphically adjacent architectural elements using outcrop analogs[J].AAPG Bulletin,2012,96(2):277-300.
[20]李志鹏,杨勇,侯加根,等.渤南五区浊积水道砂体储层构型研究[J].中国石油大学学报(自然科学版),2015,39(5):36-42.
[21]赵晓明,吴胜和,刘丽,等.尼日尔三角洲盆地Akpo油田新近系深水浊积水道储层构型表征[J].石油学报,2012,33(6):1049-1058.
[22]王金铎,韩文功,于建国,等.东营凹陷沙三段浊积岩体系及其油气勘探意义[J].石油学报,2003,24(6):24-29.
[23]饶孟余,钟建华,王海侨,等.山东东营牛庄洼陷沙三中亚段浊积砂体储层特征及影响因素[J].现代地质,2004,18(2):256-262.
[24]姚健,杜晓峰,郑敬贵,等.辽东湾地区浊积扇体识别及储层地震描述方法研究[J].断块油气田,2012,19(6):718-721.
[25]MUTTIE E,NORMARK W R.Comparing examples of modern and ancient turbidite systems:problems and concepts[M].London:Graham and Trotman,1987:1-38.
[26]孙淑艳,朱应科,沈正春.东营凹陷东部浊积岩储层地震识别技术及描述思路[J].油气地球物理,2015,13(2):1-6.
[27]于正军,董冬冬,余红,等.浊积岩分序级描述技术及其在东营凹陷油气勘探中的应用[J].地球物理学进展,2012,27(3):1086-1093.
[28]MAYALL M,LONERGAN L,BOWMAN A.The response of turbidite slope channels to growth-induced seabed topography[J].AAPG Bulletin,2010,94(7):1011-1030.