杭锦旗地区地层水特征研究及其油气地质意义
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摘要
通过对鄂尔多斯北部杭锦旗地区地层水化学组分分析,结合水化学特征参数纵向和平面分布特征变化规律,探讨地层水化学特征与油气保存条件的关系.研究表明:地层水是低p H值、高矿化度的Ⅳ型和Ⅴ型Ca Cl2型水.平面上,地层水化学特征具有东西分区、南北分带的特征,西部大部分地区及泊尔江海子断裂带两侧的局部地区表现出高矿化度(TDS)、高(rCl--rNa+)/rMg2+、低rNa+/rCl-、低(100×rSO42-/rCl-)和(rHCO3-+rCO32-)/rCa2+的特征,表明其封闭性条件较好.纵向上,泊尔江海子断裂带两侧矿化度和离子浓度随深度变化表现为正向型,表明现今地层水处于封闭的流体动力环境,有利于天然气的保存.地层水所表明的封闭环境均有良好的油气藏发现,可利用地层水离子特征寻找天然气气藏勘探区.
The relationship between chemical characteristic of formation water and preservation of gas reservoir has been discussed based on analysis of the chemical composition in Hangjinqi area.The vertical and plane variations in chemical characteristic parameters in Hangjinqi area in the north of Ordos basin. The results show that most of these formation waters with low p H value and high total dissolved solid( TDS) are calcium chloride Ⅳ-type and Ⅴ-type waters. The plane distribution features show west-east differentiation and north-south dissimilitude. The high TDS and( rCl--rNa+) /rMg2 +values and the low rNa+/ rCl-,( 100 × rSO42-/ rCl-),and( rHCO3-+ rCO32-) /rCa2 +values in the west and local area of Boerjianghaizi fault indicate better sealing condition. The relatively positive correlation of the TDS and ion concentration with depth in the north and south of theBoerjianghaizi faulted zone indicates that the formation water exists in a closed fluid dynamic environment,which is beneficial to preservation of the natural gas. All the formation water-indicative sealed environments have natural gas discoveries,which indicates a good correlation between them.The water chemical characteristics provide clues to the natural gas prospects.
The relationship between chemical characteristic of formation water and preservation of gas reservoir has been discussed based on analysis of the chemical composition in Hangjinqi area.The vertical and plane variations in chemical characteristic parameters in Hangjinqi area in the north of Ordos basin. The results show that most of these formation waters with low p H value and high total dissolved solid( TDS) are calcium chloride Ⅳ-type and Ⅴ-type waters. The plane distribution features show west-east differentiation and north-south dissimilitude. The high TDS and( rCl--rNa+) /rMg2 +values and the low rNa+/ rCl-,( 100 × rSO42-/ rCl-),and( rHCO3-+ rCO32-) /rCa2 +values in the west and local area of Boerjianghaizi fault indicate better sealing condition. The relatively positive correlation of the TDS and ion concentration with depth in the north and south of theBoerjianghaizi faulted zone indicates that the formation water exists in a closed fluid dynamic environment,which is beneficial to preservation of the natural gas. All the formation water-indicative sealed environments have natural gas discoveries,which indicates a good correlation between them.The water chemical characteristics provide clues to the natural gas prospects.
引文
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[22]薛会,张金川,王毅,等.鄂北杭锦旗探区构造演化与油气关系[J].大地构造与成矿学,2009,33(2):206-214.
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[27]李婕,赵俊兴,孔祥超,等.鄂北杭锦旗地区下石盒子组沉积相演化及控制因素[J].山东科技大学学报:自然科学版,2013,32(2):34-42.
[28]谢润成,周文,李良,等.鄂尔多斯盆地北部杭锦旗地区上古生界砂岩储层特征[J].新疆地质,2010,28(1):86-90.
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[31]Birkle P,García B M,Padrón C M M.Origin and evolution of formation water at the Jujo-Tecominoacán oil reservoir,Gulf of Mexico.Part 1:chemical evolution and water-rock interaction[J].Applied Geochemistry,2009,24(4):543-554.
[32]Lüders V,Plessen B,Romer R L,et al.Chemistry and isotopic composition of Rotliegend and Upper Carboniferous formation waters from the North German Basin[J].Chemical Geology,2010,276(3):198-208.
[33]刘方槐,颜婉荪.油气田水文地质学原理[M].北京:石油工业出版社,1991:55-95,153,234-237.
[34]马海勇,周立发,邓秀芹,等.鄂尔多斯盆地姬塬地区延长组长8地层水化学特征及其地质意义[J].西北大学学报:自然科学版,2013,43(2):253-257.
[35]李鹏春,刘春晓,张渊,等.塔中奥陶系地层水化学特征及其成因与演化[J].石油与天然气地质,2007,28(6):802-808.
[36]郭彤楼,楼章华,马永生.南方海相油气保存条件评价和勘探决策中应注意的几个问题[J].石油实验地质,2003,25(1):3-9.
[37]张宗峰,查明,高长海.大港油田埕北断阶区地层水化学特征与油气成藏[J].石油与天然气地质,2009,30(3):268-274.
[38]雍自权,李俊良,周仲礼,等.川中地区上三叠统香溪群四段地层水化学特征及其油气意义[J].物探化探计算技术,2006,28(1):41-45.
[39]蔡立国,钱一雄,刘光祥,等.塔河油田及邻区地层水成因探讨[J].石油实验地质,2002,24(1):57-60.
[2]Hanor J S.Physical and chemical controls on the composition of waters in sedimentary basins[J].Marine and Petroleum Geology,1994,11(1):31-45.
[3]Land L S.Na-Ca-Cl saline formation waters,Frio Formation(Oligocene),south Texas,USA:products of diagenesis[J].Geochimica et Cosmochimica Acta,1995,59(11):2 163-2 174.
[4]高锡兴.中国含油气盆地油田水[M].北京:石油工业出版社,1994:3-21.
[5]Varsányi I,Kovács L.Origin,chemical and isotopic evolution of formation water in geopressured zones in the Pannonian Basin,Hungary[J].Chemical Geology,2009,264(1):187-196.
[6]Méndez-Ortiz B A,Carrillo-Chávez A,González-Partida E,et al.Chemistry of petroleum brines from oil-producing wells in Cretaceous rocks from Southeast Mexico[J].Journal of Geochemical Exploration,2006,89(1):276-279.
[7]Munz I A,Johansen H,Huseby O,et al.Water flooding of the Osebergst oil field,Norwegian North Sea:application of formation water chemistry and isotopic composition for production monitoring[J].Marine and Petroleum Geology,2010,27(4):838-852.
[8]柳广弟,张厚福.石油地质学[M].北京:石油工业出版社,2009:28-30.
[9]Chen J,Liu D,Peng P,et al.The sources and formation processes of brines from the Lunnan Ordovician paleokarst reservoir,Tarim Basin,northwest China[J].Geofluids,2013,13(3):381-394.
[10]Li K,Cai C,He H,et al.Origin of palaeo-waters in the Ordovician carbonates in Tahe oilfield,Tarim Basin:constraints from fluid inclusions and Sr,C and O isotopes[J].Geofluids,2011,11(1):71-86.
[11]Cai C,Franks S G,Aagaard P.Origin and migration of brines from Paleozoic strata in Central Tarim,China:constraints from87Sr/86Sr,δD,δ18O and water chemistry[J].Applied Geochemistry,2001,16(9):1 269-1 284.
[12]林晓英,曾溅辉,杨海军,等.塔里木盆地哈得逊油田石炭系地层水化学特征及成因[J].现代地质,2012,26(2):377-383.
[13]孙向阳.沉积盆地中地层水化学特征及其地质意义[J].天然气勘探与开发,2001,24(4):47-53.
[14]任国选,侯读杰,史玉玲,等.准噶尔盆地西北缘红山嘴油田地层水特征与油气藏聚集关系[J].石油与天然气地质,2013,34(2):179-184.
[15]曾溅辉,吴琼,杨海军,等.塔里木盆地塔中地区地层水化学特征及其石油地质意义[J].石油与天然气地质,2008,29(2):223-229.
[16]梁积伟,李荣西,陈玉良.鄂尔多斯盆地苏里格气田西部盒8段地层水地球化学特征及成因[J].石油与天然气地质,2013,34(5):625-630.
[17]王建麾,李仲东,过敏,等.杭锦旗地区上古生界地层水成因[J].新疆石油地质,2009,30(1):65-67.
[18]过敏,李仲东,杜少林,等.杭锦旗地区上古生界地层水成因及其与油气的关系[J].矿物岩石,2009,29(1):99-105.
[19]薛会,张金川,徐波,等.鄂尔多斯北部杭锦旗探区上古生界烃源岩评价[J].成都理工大学学报:自然科学版,2010,37(1):21-28.
[20]纪文明,李潍莲,刘震,等.鄂尔多斯盆地北部杭锦旗地区上古生界气源岩分析[J].天然气地球科学,2013,24(5):905-914.
[21]李良,袁志祥,惠宽洋,等.鄂尔多斯盆地北部上古生界天然气聚集规律[J].石油与天然气地质,2000,21(3):268-271,282.
[22]薛会,张金川,王毅,等.鄂北杭锦旗探区构造演化与油气关系[J].大地构造与成矿学,2009,33(2):206-214.
[23]张杰,薛会,王毅,等.鄂北杭锦旗探区上古生界天然气成藏类型[J].西安石油大学学报:自然科学版,2009,24(3):1-6.
[24]张满郎,李熙喆,谷江锐,等.鄂尔多斯盆地上古生界层序地层划分及演化[J].沉积学报,2009,27(2):289-298.
[25]郭英海,刘焕杰,权彪,等.鄂尔多斯地区晚古生代沉积体系及古地理演化[J].沉积学报,1998,16(3):44-51.
[26]朱宗良,李文厚,李克永,等.杭锦旗地区上古生界层序及沉积体系发育特征[J].西北大学学报:自然科学版,2010,40(6):1 050-1 054.
[27]李婕,赵俊兴,孔祥超,等.鄂北杭锦旗地区下石盒子组沉积相演化及控制因素[J].山东科技大学学报:自然科学版,2013,32(2):34-42.
[28]谢润成,周文,李良,等.鄂尔多斯盆地北部杭锦旗地区上古生界砂岩储层特征[J].新疆地质,2010,28(1):86-90.
[29]袁志祥.鄂北塔巴庙,杭锦旗地区古生界天然气勘探前景分析[J].天然气工业,2001,21(增刊):5-9.
[30]Carpenter A B.Origin and chemical evolution of brines in sedimentary basins[C]//SPE Annual Fall Technical Conference and Exhibition.Society of Petroleum Engineers,1978:79,60-77.
[31]Birkle P,García B M,Padrón C M M.Origin and evolution of formation water at the Jujo-Tecominoacán oil reservoir,Gulf of Mexico.Part 1:chemical evolution and water-rock interaction[J].Applied Geochemistry,2009,24(4):543-554.
[32]Lüders V,Plessen B,Romer R L,et al.Chemistry and isotopic composition of Rotliegend and Upper Carboniferous formation waters from the North German Basin[J].Chemical Geology,2010,276(3):198-208.
[33]刘方槐,颜婉荪.油气田水文地质学原理[M].北京:石油工业出版社,1991:55-95,153,234-237.
[34]马海勇,周立发,邓秀芹,等.鄂尔多斯盆地姬塬地区延长组长8地层水化学特征及其地质意义[J].西北大学学报:自然科学版,2013,43(2):253-257.
[35]李鹏春,刘春晓,张渊,等.塔中奥陶系地层水化学特征及其成因与演化[J].石油与天然气地质,2007,28(6):802-808.
[36]郭彤楼,楼章华,马永生.南方海相油气保存条件评价和勘探决策中应注意的几个问题[J].石油实验地质,2003,25(1):3-9.
[37]张宗峰,查明,高长海.大港油田埕北断阶区地层水化学特征与油气成藏[J].石油与天然气地质,2009,30(3):268-274.
[38]雍自权,李俊良,周仲礼,等.川中地区上三叠统香溪群四段地层水化学特征及其油气意义[J].物探化探计算技术,2006,28(1):41-45.
[39]蔡立国,钱一雄,刘光祥,等.塔河油田及邻区地层水成因探讨[J].石油实验地质,2002,24(1):57-60.