大民屯凹陷沈84-安12块储层特征研究
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摘要
本次研究通过井震相结合、剖面对比和断块对比相结合的方法,采用高分辨率层序地层学和测井地质学以及储层地质等理论方法,根据测井、录井以及岩心等资料,对大民屯凹陷沈84安12块沙三段的沉积特征、储层特征、储层非均质性进行研究,为以后的勘探开发提供了技术支持。
通过岩心薄片鉴定资料分析研究得出：沈84安12块沙三段储层岩石类型主要是长石砂岩和岩屑质长石砂岩。颗粒大小混杂,岩性较粗,泥质含量中等的特征。颗粒磨圆度为次圆一次尖,分选中等。储层物性变化较大,在垂向上,从下到上有变好的趋势。分析总结了影响物性特征的因素有沉积相的分布、岩石粒度和分选情况以及成岩作用。通过对储集层的孔隙度和渗透率、岩性特征以及隔夹层分布的研究分析,得出该研究区非均质性较严重,并阐述了非均质性对采收率和剩余油的影响。为以后的油气勘探提供了科学的指导。
Damin tun depression shen 84 an 12 block develop rupture, the geologic is very complex, exploitative oil is developing into high water rate level stage. Though study oil well combine with seismography method, guide with high differentiate stratigraphy, reservoir sedimentology, well logging geology, geology of petroleum and production seismology theory. Describe the sedimentary facies mark, the characteristic of sedimentary, reservoir bed characteristic, and the aeolotropism of reservoir bed base on the Damintun depression shen 84 an 12 block well surveying well drilling and well logging datum. All of above give a lot of support for the future exploratory development.
Though reach the core wafer identify datum to study the petrology of the reservoir bed get the result that the third phase of damintun depression shen 84 an 12 blocks the main content are arcose and syrosem arcose. mix of diameter grains of sand in the reservoir bed, roughly of the lithologic character and have moderate quantify of mud, they are the permeable bed characteristic. The particle degree of roundness is subrounded first hypocone. sieve ratio is moderate. physical property of the reservoir change much in the vertical, they have a good tendency from up to down in the reservoir bed. Summary the affect elements of the influencing characteristic, they are sedimentary facies distribute, the grain grade, coefficient of sorting and diagenic metamorphism.Discover that the main contents of the clay mineral is montmorillonite, ledikite, kaolinit and chlorite by means of X-ray and electronic scan observe. The main content of the crag is kaolinit, and the main content of claystone is montmorillonite. The study area compose of the interstitial pore space is complicated, the main consist is pre-existing interparticle channel, intercrystal microchannel and secondary origin emposieu etc. the primary content is pre-existing interparticle, the second is secondary origin emposieu and it is comparatively grow, the other interparticle are not grow. Though study the degree of porosity, permeability, hierarchical factor and distributed of the interbed. We have the conclusion that the aeolotropism in the areas are serious. Elaborate the affection to the oil recovery efficiency and remaining oil. Assemble the physical character, petrography character, pore structure, aeolotropism etc of the reservoir rocks study, finally comprehensive evaluate the four experiments block, and give a guideline for oil exploration activity.
通过岩心薄片鉴定资料分析研究得出：沈84安12块沙三段储层岩石类型主要是长石砂岩和岩屑质长石砂岩。颗粒大小混杂,岩性较粗,泥质含量中等的特征。颗粒磨圆度为次圆一次尖,分选中等。储层物性变化较大,在垂向上,从下到上有变好的趋势。分析总结了影响物性特征的因素有沉积相的分布、岩石粒度和分选情况以及成岩作用。通过对储集层的孔隙度和渗透率、岩性特征以及隔夹层分布的研究分析,得出该研究区非均质性较严重,并阐述了非均质性对采收率和剩余油的影响。为以后的油气勘探提供了科学的指导。
Damin tun depression shen 84 an 12 block develop rupture, the geologic is very complex, exploitative oil is developing into high water rate level stage. Though study oil well combine with seismography method, guide with high differentiate stratigraphy, reservoir sedimentology, well logging geology, geology of petroleum and production seismology theory. Describe the sedimentary facies mark, the characteristic of sedimentary, reservoir bed characteristic, and the aeolotropism of reservoir bed base on the Damintun depression shen 84 an 12 block well surveying well drilling and well logging datum. All of above give a lot of support for the future exploratory development.
Though reach the core wafer identify datum to study the petrology of the reservoir bed get the result that the third phase of damintun depression shen 84 an 12 blocks the main content are arcose and syrosem arcose. mix of diameter grains of sand in the reservoir bed, roughly of the lithologic character and have moderate quantify of mud, they are the permeable bed characteristic. The particle degree of roundness is subrounded first hypocone. sieve ratio is moderate. physical property of the reservoir change much in the vertical, they have a good tendency from up to down in the reservoir bed. Summary the affect elements of the influencing characteristic, they are sedimentary facies distribute, the grain grade, coefficient of sorting and diagenic metamorphism.Discover that the main contents of the clay mineral is montmorillonite, ledikite, kaolinit and chlorite by means of X-ray and electronic scan observe. The main content of the crag is kaolinit, and the main content of claystone is montmorillonite. The study area compose of the interstitial pore space is complicated, the main consist is pre-existing interparticle channel, intercrystal microchannel and secondary origin emposieu etc. the primary content is pre-existing interparticle, the second is secondary origin emposieu and it is comparatively grow, the other interparticle are not grow. Though study the degree of porosity, permeability, hierarchical factor and distributed of the interbed. We have the conclusion that the aeolotropism in the areas are serious. Elaborate the affection to the oil recovery efficiency and remaining oil. Assemble the physical character, petrography character, pore structure, aeolotropism etc of the reservoir rocks study, finally comprehensive evaluate the four experiments block, and give a guideline for oil exploration activity.
引文
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[3]顿铁军.储层研究状况与发展趋向[J].西北地质,1995,19(16)：45-51.
[4]杨小三.油气储层研究现状及发展趋势[J].科技创新报,2009,20(15)：40-46.
[5]徐强,刘宝君.中国沉积学研究的现状和发展方向[J].西南石油学院学报,2000,22(3)：1-4.
[6]张庆春.大民屯凹陷二维盆地模拟[J].石油勘探与开发,1994,21(3):21-23.
[7]辛世伟.沈84—安12块沙三段微构造特征研究辛世伟[D].东北石油大学.2009:10-15.
[8]马玉龙,牛仲仁.辽河油区勘探与开发[J].西南石油学院学报,1997,21(3):1 1-14.
[9]李兴国.油层微型构造对油井生产的控制作用[J].油勘探开发,1987,21(2):54-61.
[10]张华昌,曲军,林信漾.沈84-安12块石油地质特征再认识[R].辽宁：辽河石油勘探局勘探开发研究院,1999,1-4.
[11]吴金才,张玉明等.层序地层学勘探实践[M].武汉：中国地质大学出版社,2001.12-30.
[12]林畅松,刘景彦.高精度层序地层分析：建立沉积相和储层规模的等时地层格架[J].现代地质,2002,16(3)：276-281.
[13]马云凤.辽河断陷欧利佗子油田层序特征研究[D].东北石油大学,2009:20-30.
[14]邢卫东,向赞.枣园油田孔一段精细等时地层格架建立方法[J].天然气地球科学2010,21(4)：11-14.
[15]赵澄林,朱筱敏.沉积岩石学[M].北京：石油工业出版社,2005.59-70.
[16]赵澄林,朱筱敏.沉积岩石学[M].北京：石油工业出版社,2005.48-49.
[17]毕殿辉.沈84安12沙三段沉积特征研究[D].东北石油大学,2009:20-40.
[18]赵澄林,朱筱敏.沉积岩石学[M].北京：石油工业出版社,2005.91-92.
[19]赵澄林,朱筱敏.沉积岩石学[M].北京：石油工业出版社,2005.95-96.
[20]师永民,霍进,张玉广.陆相油田开发中后期油藏精细描述[M].北京：石油工业出版社,2004.59-205.
[21]赵虹等.安塞地区延长组沉积微相研究[J].天然气地球科学.2004,15(5)：10-13.
[22]吕晓光,赵翰卿,付志国等.河流相储层平面连续性精细描述[J].石油学报.1997,18(2)：66-701.
[23]冉冉,林正良.麻黄山油田侏罗系延安组主产油层储层特征研究[J].南方油气,2006,71(2)：20-25.
[24]单敬福,路杨.厚层河道砂体储层非均质性研究_以葡萄花油层组P11_PI4小层为例[J].地质找矿论丛,2007,22(3)：6-7.
[25]董秀超.方正断陷白垩系-古近系储层特征研究[D].大庆石油学院,2009:30-34.
[26]王峰,田景春.鄂尔多斯盆地北部上古生界盒储层特征及控制因素分析[J].沉积学报,2009,27(2)：10-14.
[27]王辉.滨南油田沙二段薄层砂岩储层特征研究[J].西部探矿工程,2005,27(2):52-53.
[28]林玉保,张江.喇嘛甸油田砂岩孔隙结构特征研究[J].大庆石油地质与开发,2006,25(2)：39-44.
[29]周宗良,杨国安,肖建铃.河成单元构型非均质性研究[J].石油勘探与开发,1995,22(4)：71-77.
[30]张君龙.沈84_安12块微观孔隙结构特征研究[J].内蒙古石油化工,2008(2):21-36.
[31]张幸福周嘉玺..陆相复杂断块油田精细油藏描述技术[M].北京：石油工业出版社,1992.49-87.
[32]孔祥玲.辽河断陷欧利坨子油田碎屑岩储层特征研究[D].东北石油大学,2009:7-15.
[33]刘克奇,杨喜峰,杨春梅.东濮凹陷卫城81断块沙四段第二砂层组储层非均质性研究[J].断块油气田,2004,11(4)：10-18.
[34]于兴河.碎屑岩系油气储层沉积学[M].石油工业出版社,2002.108-125.
[35]陈永生.油田非均质对策论[M].北京：石油工业出版社,1993.26-45.
[36]陈占坤.渤海湾盆地曙光油田曙266油藏沉积微相及储层的非均质性研究[J].地质力学学报,2006,12(1)：71-95.
[37]蒋晓红.尕斯库勒油田N_1-N_2-1油藏砂西区Ⅱ油组储层非均质特征评价[J].四川地质学报.2003,23(3)：15-40.
[38]李宁.大宛齐油田康村组K1_K4段储层非均质研究[J].内蒙古石油化工,2009,11(2)：11-20.
[39]李存贵.低渗透储层三维地质模型和剩余油分布预测[M].北京：石油工业出版社,2003,10(1)：30-45.
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