延安地区长6储层非均性特征
|
摘要
储层的物性是影响油气的聚集、储存和开采的重要地质因素。通过岩芯薄片、测井曲线、钻井资料等数据的统计分析,对延安地区延长组长6油层储集层的层内、层间和平面的非均质性特征进行研究,进而确定储层非均质性对油藏的形成及开发的影响。结果表明:延安地区长6储层为三角洲前缘亚相,水下分流河道砂体为主要的储油层,河道主体相对河道两侧非均质性较弱,储层表现为低孔-低渗的特征,层内非均质性较强,以下细上粗的反韵律为主,层理较发育,泥质夹层和钙质夹层为主要的层内夹层,渗透率表现为低孔-低渗的特征;储层内部单砂层较多且不连续,分层系数较大,层间隔层较发育,层间非均质性较强;从平面非均质性来看,砂体以条状、片状为主,砂体整体连通性一般较好,水下分流河道砂体的非均质性较弱,分流间湾、河口坝和天然堤等砂体的非均质性较强。从单层砂体来看,长6_2分层系数最大,层间隔层最多,层间非均质性最强;长6_4整体砂厚较薄,有效砂岩密度最小,非均质性也较强。
Reservoir heterogeneity is an important geological factor that affects the accumulation,storage and exploitation of oil and gas.Based on the statistical analysis of data such as core sheet,logging curve and drilling data,the heterogeneity characteristics of interlayer,in-layers and planar in Chang 6 reservoir of Yanchang Formation in Yan'an Area are analysed and studied in order to confirm the impact of reservoirs on the formation and development of reservoirs.The results show that the Chang 6 reservoir of the Yan'an Area is the delta front subfacies,and the underwater distributary channel sand body is the main reservoir.The main body of the river is relatively weak in heterogeneity on both sides of the channel,and the reservoir is characterized by low porosity.The reservoir has the characteristics of low permeability,strong heterogeneity,anti-rhythm of fine in the upper and rough in the lower layer,more developed bedding,the argillaceous interlayer and the calcareous interlayer as the main interlayer,and low permeability.Single sand layer inside the reservoir is more and discontinuous,and the layering coefficient is larger.The interlayer layer is more developed,and the interlayer heterogeneity is stronger;from the plane heterogeneity,the sand body is mainly in strips and sheets,the overall connectivity of sand bodies is generally good,and the heterogeneity of underwater distributary channel sand bodies is weak.The heterogeneity of sand bodies such as diversion bays,estuaries and natural dikes is better and stronger.From the perspective of single-layer sand body,the long 6_2 layering coefficient is the largest,the layer spacing layer is the most,and the interlayer heterogeneity is the strongest;the length 6_4 overall sand thickness is thinner,the effective sandstone density is the smallest,and the heterogeneity is also strong.
Reservoir heterogeneity is an important geological factor that affects the accumulation,storage and exploitation of oil and gas.Based on the statistical analysis of data such as core sheet,logging curve and drilling data,the heterogeneity characteristics of interlayer,in-layers and planar in Chang 6 reservoir of Yanchang Formation in Yan'an Area are analysed and studied in order to confirm the impact of reservoirs on the formation and development of reservoirs.The results show that the Chang 6 reservoir of the Yan'an Area is the delta front subfacies,and the underwater distributary channel sand body is the main reservoir.The main body of the river is relatively weak in heterogeneity on both sides of the channel,and the reservoir is characterized by low porosity.The reservoir has the characteristics of low permeability,strong heterogeneity,anti-rhythm of fine in the upper and rough in the lower layer,more developed bedding,the argillaceous interlayer and the calcareous interlayer as the main interlayer,and low permeability.Single sand layer inside the reservoir is more and discontinuous,and the layering coefficient is larger.The interlayer layer is more developed,and the interlayer heterogeneity is stronger;from the plane heterogeneity,the sand body is mainly in strips and sheets,the overall connectivity of sand bodies is generally good,and the heterogeneity of underwater distributary channel sand bodies is weak.The heterogeneity of sand bodies such as diversion bays,estuaries and natural dikes is better and stronger.From the perspective of single-layer sand body,the long 6_2 layering coefficient is the largest,the layer spacing layer is the most,and the interlayer heterogeneity is the strongest;the length 6_4 overall sand thickness is thinner,the effective sandstone density is the smallest,and the heterogeneity is also strong.
引文
[1] 吴元燕,徐龙,张昌明,等.油气储层地质[M].北京:石油工业出版社,1996.WU Yuan-yan,XU Long,ZHANG Chang-ming,et al.Petroleum reservoir geology[M].Beijing:Petroleum Industry Press,1996.
[2] 吴胜和,熊琦华.油气储层地质学[M].北京:石油工业出版社,1998.WU Sheng-he,XIONG Qi-hua.Petroleum reservoir geology[M].Beijing:Petroleum Industry Press,1998.
[3] Miall Andrew D.Reservoir heterogeneities in fluvial sandstone:lessons from outcrop studies[J].American Association of Petroleum Geologists,1988,72(6):682-697.
[4] Larry W Lake,Herbert B Carroll,Thomas Wesson.Second international reservoir characterization conference[J].Reservoir Characterization Ⅱ,1991:478-491.
[5] 秦同洛,李璗,陈元千.实用油藏工程方法[M].北京:石油工业出版社,1986.QIN Tong-luo,LI Dang,CHEN Yuan-qian.Practical reservoir engineering method[M].Beijing:Petroleum Indu-stry Press,1986.
[6] 裘怿楠,薛叔浩.油气储层评价技术[M].北京:石油工业出版社,2001.QIU Yi-nan,XUE Shu-hao.Evaluation technology of petroleum reservoir[M].Beijing:Petroleum Industry Pre-ss,2001.
[7] 马东升,符超峰,李克永,等.延长地区延长组储层非均质性特征[J].西安科技大学学报,2017,37(6):879-885.MA Dong-sheng,FU Chao-feng,LI Ke-yong,et al.Reservoir heterogeneity characteristics of Yanchang Formation in Yanchang Region[J].Journal of Xi’an University of Science and Technology,2017,37(6):879-885.
[8] 杜贵超,胡双全,石立华,等.七里村油田长6油层组储层特征及孔隙演化[J].岩性油气藏,2015,27(1),51-57.DU Gui-chao,HU Shuang-quan,SHI Li-hua,et al.Reservoir characteristics and pore evolution of Chang 6 oil reservoir set in Qilicun oilfield[J].Lithologic Reservoirs,2015,27(1),51-57.
[9] 思玉琥,郝世彦,张林森,等.延安地区上三叠统长6期储层成岩作用及孔隙演化[J].特种油气藏,2011,18(6):36-39.SI Yu-hu,HAO Shi-yan,ZHANG Lin-sen,et al.Diagenesis of the Upper Triassic Chang 6 Formation in Yan’an area and pore evolution[J].Special Oil and Gas Reservoirs,2011,18(6):36-39.
[10] 白江,刘晓芳.陕北吴起地区延长组储层非均质性特征[J].西安科技大学学报,2017,37(3):403-409.BAI Jiang,LIU Xiao-fang.Heterogeneity of the reservoir in the Yanchang Formation,Wuqi area[J].Journal of Xi’an university of science and technology,2017,37(3):403-409.
[11] 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,2007,14(4):15-18.YU Cui-ling,LIN Cheng-yan.Advancement of reservoir heterogeneity research[J].Petroleum Geology and Recovery Efficiency,2007,14(4):15-18.
[12] 王雷,刘国涛,龙涛,等.一种曲流河点坝体内部侧积体描述方法[J].岩性油气藏,2008,20(4):132-134.WANG Lei,LIU Guo-tao,LONG Tao,et al.Description method of lateral accretion within point bar of meandering river[J].Lithologic Reservoirs,2008,20(4):132-134.
[13] 曹红霞,李文厚,陈全红,等.鄂尔多斯盆地南部晚三叠世沉降与沉积中心研究[J].大地构造与成矿学,2008,32(2):159-164.CAO Hong-xia,LI Wen-hou,CHEN Quan-hong,et al.Center of late Triassic subsidence and depocenter for the southern Ordos Basin[J].Geotectonica et Metallogenia,2008,32(2):159-164.
[14] 朱源泉.ZL油田延长组储层特征及非均质性特征研究[D].西安:西安科技大学,2016.ZHU Yuan-quan.The reservoir characteristics and heterogeneity study of Yanchang Formation in ZL Oilfield[D].Xi’an:Xi’an University of Science and Technology,2016.
[15] 王道富.鄂尔多斯盆地特低渗透油田开发[M].北京:石油工业出版社,2007.WANG Dao-fu.The ultra-low permeability oil field development of Ordos Basin[M].Beijing:Petroleum Industry Press,2007.
[16] 关利群,屈红军,胡春花,等.安塞油田H区长6油层组储层非均质性与含油性关系研究[J].岩性油气藏,2010,22(3):26-30.GUAN Li-qun,QU Hong-jun,HU Chun-hua,et al.The relationship of heterogeneity and oil-bearing property of Chang 6 reservoir at H area in Ansai oilfield[J].Lithologic Reservoirs,2010,22(3):26-30.
[17] 赵伟波.鄂尔多斯盆地中部地区三叠系延长组储层特征和裂缝研究[D].西安:西北大学,2008.ZHAO Wei-bo.Study on reservoir features and fracture of Yanchang Formation,Triassic in the central region of Ordos Basin[D].Xi’an:Northwest University,2008.
[18] 王辉,王凤琴.甘谷驿油田共大滩区延长组长6段非均质模式与油气分布[J].岩性油气藏,2008,20(2):48-53.WANG Hui,WANG Feng-qin.Heterogeneity models and hydrocarbon distribution in Chang 6 member of Yanchang Formation in Gongdatan area,Ganguyi oilfield[J].Lithologic Reservoirs,2008,20(2):48-53.
[19] 李江山,刘玉博.鄂尔多斯盆地白河地区长4+5储层控制因素分析[J].西安科技大学学报,2015,35(3):363-368.LI Jiang-shan,LIU Yu-bo.Control factors of Chang 4+5 reservoir characteristics in Baihe area,Ordos Basin[J].Journal of Xi’an University of Science and Technology,2015,35(3):363-368.
[20] 伍友佳.油藏地质学[M].北京:石油工业出版社,2004.WU You-jia.Reservoir geology[M].Beijing:Petroleum Industry Press,2004.
[21] 张淑娟,刘大听,罗永胜.潜山油藏内幕隔层及断层控制的剩余油分布模式[J].石油学报,2001,22(6):50-54.ZHANG Shu-juan,LIU Da-ting,LUO Yong-sheng.The remaining oil distribution pattern controlled by interior aquifuges and faults in buried hills reservoir[J].Acta Petrolei Sinica,2001,22(6):50-54.
[22] 于波.鄂尔多斯盆地上古生界致密砂岩储层微观孔隙特征[J].西安科技大学学报,2018,38(1):150-155.YU Bo.Micro-characteristics of Upper Paleozoic tight reservoir of Ordos Basin[J].Journal of Xi’an University of Science and Technology,2018,38(1):150-155.
[23] 彭永成.石楼西区块致密砂岩气藏精细描述及开发对策[D].大庆:东北石油大学,2015.PENG Yong-cheng.Detialed description of tight sandstone gas reservoir and measures for the development in block Shilouxi[D].Daqing:Northeast Petroleum University,2015.
[24] 张添锦,张海,李鹏程.基于FZI的致密砂岩渗流特征分析[J].西安科技大学学报,2017,37(3):370-376.ZHANG Tian-jin,ZHANG Hai,LI Peng-cheng.Percolation characteristics for dense lithology based on flow units FZI method[J].Journal of Xi’an University of Science and Technology,2017,37(3):370-376.
[25] 陈全红,李文厚,高永祥,等.鄂尔多斯盆地上三叠统延长组深湖沉积与油气聚集意义[J].中国科学D辑,2007,37(增1):39-48.CHEN Quan-hong,LI Wen-hou,GAO Yong-xiang,et al.The deep lacustrine sedimentary and its importance of oil-gas accumulation of Yanchang Formation in Late Triassic of Ordos Basin[J].Science in China:Series D,2007,37(S1):39-48.
[26] 李元昊.鄂尔多斯盆地西部中区延长组下部石油成藏机理及主控因素[D].西安:西北大学,2008.LI Yuan-hao.The oil reservoir forming mechanisms and its main controlling factors of the lower Yanchang Formation in the middle of the west Ordos Basin[D].Xi’an:Northwest University,2008.
[27] 苏玉亮,李涛.平面非均质性对特低渗透油藏水驱油规律的影响[J].油气地质与采收率,2009,16(1):69-71.SU Yu-liang,LI Tao.Effects studies of areal heterogeneity on oil-water displacement laws in extra-low permeability reservoirs[J].Petroleum Geology and Recovery Efficiency,2009,16(1):69-71.
[28] 林承焰,谭丽娟,于翠玲.论油气分布的不均一性(Ⅱ)——非均质控油理论探讨[J].岩性油气藏,2007,19(3):14-22.LIN Cheng-yan,TAN Li-juan,YU Cui-ling.Research on the heterogeneous distribution of petroleum(Ⅱ)[J].Lithologic Reservoirs,2007,19(3):14-22.
[29] 张磊锋.鄂尔多斯盆地延长组储层特征及宏观非均质性[J].石油天然气学报,2008,30(5):211-214.ZHANG Lei-feng.Reservoir characteristics and macro heterogeneity in Yanchang Formation of Ordos Basin[J].Journal of Oil and Gas Technology,2008,30(5):211-214.
[2] 吴胜和,熊琦华.油气储层地质学[M].北京:石油工业出版社,1998.WU Sheng-he,XIONG Qi-hua.Petroleum reservoir geology[M].Beijing:Petroleum Industry Press,1998.
[3] Miall Andrew D.Reservoir heterogeneities in fluvial sandstone:lessons from outcrop studies[J].American Association of Petroleum Geologists,1988,72(6):682-697.
[4] Larry W Lake,Herbert B Carroll,Thomas Wesson.Second international reservoir characterization conference[J].Reservoir Characterization Ⅱ,1991:478-491.
[5] 秦同洛,李璗,陈元千.实用油藏工程方法[M].北京:石油工业出版社,1986.QIN Tong-luo,LI Dang,CHEN Yuan-qian.Practical reservoir engineering method[M].Beijing:Petroleum Indu-stry Press,1986.
[6] 裘怿楠,薛叔浩.油气储层评价技术[M].北京:石油工业出版社,2001.QIU Yi-nan,XUE Shu-hao.Evaluation technology of petroleum reservoir[M].Beijing:Petroleum Industry Pre-ss,2001.
[7] 马东升,符超峰,李克永,等.延长地区延长组储层非均质性特征[J].西安科技大学学报,2017,37(6):879-885.MA Dong-sheng,FU Chao-feng,LI Ke-yong,et al.Reservoir heterogeneity characteristics of Yanchang Formation in Yanchang Region[J].Journal of Xi’an University of Science and Technology,2017,37(6):879-885.
[8] 杜贵超,胡双全,石立华,等.七里村油田长6油层组储层特征及孔隙演化[J].岩性油气藏,2015,27(1),51-57.DU Gui-chao,HU Shuang-quan,SHI Li-hua,et al.Reservoir characteristics and pore evolution of Chang 6 oil reservoir set in Qilicun oilfield[J].Lithologic Reservoirs,2015,27(1),51-57.
[9] 思玉琥,郝世彦,张林森,等.延安地区上三叠统长6期储层成岩作用及孔隙演化[J].特种油气藏,2011,18(6):36-39.SI Yu-hu,HAO Shi-yan,ZHANG Lin-sen,et al.Diagenesis of the Upper Triassic Chang 6 Formation in Yan’an area and pore evolution[J].Special Oil and Gas Reservoirs,2011,18(6):36-39.
[10] 白江,刘晓芳.陕北吴起地区延长组储层非均质性特征[J].西安科技大学学报,2017,37(3):403-409.BAI Jiang,LIU Xiao-fang.Heterogeneity of the reservoir in the Yanchang Formation,Wuqi area[J].Journal of Xi’an university of science and technology,2017,37(3):403-409.
[11] 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,2007,14(4):15-18.YU Cui-ling,LIN Cheng-yan.Advancement of reservoir heterogeneity research[J].Petroleum Geology and Recovery Efficiency,2007,14(4):15-18.
[12] 王雷,刘国涛,龙涛,等.一种曲流河点坝体内部侧积体描述方法[J].岩性油气藏,2008,20(4):132-134.WANG Lei,LIU Guo-tao,LONG Tao,et al.Description method of lateral accretion within point bar of meandering river[J].Lithologic Reservoirs,2008,20(4):132-134.
[13] 曹红霞,李文厚,陈全红,等.鄂尔多斯盆地南部晚三叠世沉降与沉积中心研究[J].大地构造与成矿学,2008,32(2):159-164.CAO Hong-xia,LI Wen-hou,CHEN Quan-hong,et al.Center of late Triassic subsidence and depocenter for the southern Ordos Basin[J].Geotectonica et Metallogenia,2008,32(2):159-164.
[14] 朱源泉.ZL油田延长组储层特征及非均质性特征研究[D].西安:西安科技大学,2016.ZHU Yuan-quan.The reservoir characteristics and heterogeneity study of Yanchang Formation in ZL Oilfield[D].Xi’an:Xi’an University of Science and Technology,2016.
[15] 王道富.鄂尔多斯盆地特低渗透油田开发[M].北京:石油工业出版社,2007.WANG Dao-fu.The ultra-low permeability oil field development of Ordos Basin[M].Beijing:Petroleum Industry Press,2007.
[16] 关利群,屈红军,胡春花,等.安塞油田H区长6油层组储层非均质性与含油性关系研究[J].岩性油气藏,2010,22(3):26-30.GUAN Li-qun,QU Hong-jun,HU Chun-hua,et al.The relationship of heterogeneity and oil-bearing property of Chang 6 reservoir at H area in Ansai oilfield[J].Lithologic Reservoirs,2010,22(3):26-30.
[17] 赵伟波.鄂尔多斯盆地中部地区三叠系延长组储层特征和裂缝研究[D].西安:西北大学,2008.ZHAO Wei-bo.Study on reservoir features and fracture of Yanchang Formation,Triassic in the central region of Ordos Basin[D].Xi’an:Northwest University,2008.
[18] 王辉,王凤琴.甘谷驿油田共大滩区延长组长6段非均质模式与油气分布[J].岩性油气藏,2008,20(2):48-53.WANG Hui,WANG Feng-qin.Heterogeneity models and hydrocarbon distribution in Chang 6 member of Yanchang Formation in Gongdatan area,Ganguyi oilfield[J].Lithologic Reservoirs,2008,20(2):48-53.
[19] 李江山,刘玉博.鄂尔多斯盆地白河地区长4+5储层控制因素分析[J].西安科技大学学报,2015,35(3):363-368.LI Jiang-shan,LIU Yu-bo.Control factors of Chang 4+5 reservoir characteristics in Baihe area,Ordos Basin[J].Journal of Xi’an University of Science and Technology,2015,35(3):363-368.
[20] 伍友佳.油藏地质学[M].北京:石油工业出版社,2004.WU You-jia.Reservoir geology[M].Beijing:Petroleum Industry Press,2004.
[21] 张淑娟,刘大听,罗永胜.潜山油藏内幕隔层及断层控制的剩余油分布模式[J].石油学报,2001,22(6):50-54.ZHANG Shu-juan,LIU Da-ting,LUO Yong-sheng.The remaining oil distribution pattern controlled by interior aquifuges and faults in buried hills reservoir[J].Acta Petrolei Sinica,2001,22(6):50-54.
[22] 于波.鄂尔多斯盆地上古生界致密砂岩储层微观孔隙特征[J].西安科技大学学报,2018,38(1):150-155.YU Bo.Micro-characteristics of Upper Paleozoic tight reservoir of Ordos Basin[J].Journal of Xi’an University of Science and Technology,2018,38(1):150-155.
[23] 彭永成.石楼西区块致密砂岩气藏精细描述及开发对策[D].大庆:东北石油大学,2015.PENG Yong-cheng.Detialed description of tight sandstone gas reservoir and measures for the development in block Shilouxi[D].Daqing:Northeast Petroleum University,2015.
[24] 张添锦,张海,李鹏程.基于FZI的致密砂岩渗流特征分析[J].西安科技大学学报,2017,37(3):370-376.ZHANG Tian-jin,ZHANG Hai,LI Peng-cheng.Percolation characteristics for dense lithology based on flow units FZI method[J].Journal of Xi’an University of Science and Technology,2017,37(3):370-376.
[25] 陈全红,李文厚,高永祥,等.鄂尔多斯盆地上三叠统延长组深湖沉积与油气聚集意义[J].中国科学D辑,2007,37(增1):39-48.CHEN Quan-hong,LI Wen-hou,GAO Yong-xiang,et al.The deep lacustrine sedimentary and its importance of oil-gas accumulation of Yanchang Formation in Late Triassic of Ordos Basin[J].Science in China:Series D,2007,37(S1):39-48.
[26] 李元昊.鄂尔多斯盆地西部中区延长组下部石油成藏机理及主控因素[D].西安:西北大学,2008.LI Yuan-hao.The oil reservoir forming mechanisms and its main controlling factors of the lower Yanchang Formation in the middle of the west Ordos Basin[D].Xi’an:Northwest University,2008.
[27] 苏玉亮,李涛.平面非均质性对特低渗透油藏水驱油规律的影响[J].油气地质与采收率,2009,16(1):69-71.SU Yu-liang,LI Tao.Effects studies of areal heterogeneity on oil-water displacement laws in extra-low permeability reservoirs[J].Petroleum Geology and Recovery Efficiency,2009,16(1):69-71.
[28] 林承焰,谭丽娟,于翠玲.论油气分布的不均一性(Ⅱ)——非均质控油理论探讨[J].岩性油气藏,2007,19(3):14-22.LIN Cheng-yan,TAN Li-juan,YU Cui-ling.Research on the heterogeneous distribution of petroleum(Ⅱ)[J].Lithologic Reservoirs,2007,19(3):14-22.
[29] 张磊锋.鄂尔多斯盆地延长组储层特征及宏观非均质性[J].石油天然气学报,2008,30(5):211-214.ZHANG Lei-feng.Reservoir characteristics and macro heterogeneity in Yanchang Formation of Ordos Basin[J].Journal of Oil and Gas Technology,2008,30(5):211-214.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |