塔河地区火成岩发育特征及勘探意义
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摘要
塔河地区海西晚期火成岩最为发育,表现为上部普遍发育一套英安岩,下部发育一套玄武岩。工区内喷发旋回极为典型,早期为基性玄武岩,晚期为酸性英安岩。研究区火成岩地震反射特征可分为6类:透镜状反射结构、丘状反射结构、板状反射结构、杂乱型反射结构、空白弱反射结构及异常增厚反射结构,不同的地震反射特征具有不同岩性组合、喷发的旋回特征。通过针对塔河火成岩类型、测井特征、储集空间、地震相分布及其对油气储集条件综合分析,结合已发现油气藏的成藏特征,指出了有利勘探区的关键因素,并针对研究区的火成岩勘探提出了建议。
Volcanic rock was the most abundant developing rock structure during late period of Hercynian in Tahe area,consisting of overlying dacite and underlying basalt.The typical eruption cycle featured basic basalt early on and later acidic dacite in the study area.Seismic reflection characteristics of Volcanics in the area could be divided into six categories which include lenticular reflection,moundy reflection,slab,clutter reflection,weak reflection,and abnormal thickening of the reflex.Different combinations have different lithologic seismic reflection features and eruption cycle characteristics.Based on analysis of rock type,logging characteristics,reservoir spaces,seismic facies,reservoir condition,and accumulation's feature of oil and gas reservoirs,this paper pointed out the key factors for favorable petroleum exploration areas,putting forward suggestions for the exploration of volcanic rock in the study area.
Volcanic rock was the most abundant developing rock structure during late period of Hercynian in Tahe area,consisting of overlying dacite and underlying basalt.The typical eruption cycle featured basic basalt early on and later acidic dacite in the study area.Seismic reflection characteristics of Volcanics in the area could be divided into six categories which include lenticular reflection,moundy reflection,slab,clutter reflection,weak reflection,and abnormal thickening of the reflex.Different combinations have different lithologic seismic reflection features and eruption cycle characteristics.Based on analysis of rock type,logging characteristics,reservoir spaces,seismic facies,reservoir condition,and accumulation's feature of oil and gas reservoirs,this paper pointed out the key factors for favorable petroleum exploration areas,putting forward suggestions for the exploration of volcanic rock in the study area.
引文
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[12]王月蕾,陈学国,郝志伟,等.准噶尔盆地哈山西地区石炭系火成岩裂缝预测[J].地质科技情报,2014,33(2):66-71.
[2]Patricia S,Nora R.Processes controlling porosity and permeability in volcanic reservoirs from the Austral and Neuque'n basins,Argentina[J].AAPG Bulletin,2007,91(1):115-129.
[3]Sruoga P,Rubinstein N,Hinterwimmer G.Porosity and permeability in volcanic rocks:A case study on the Serie Tobifera,South Patagonia,Argentina[J].Journal of Volcanology and Geothermal Research,2004,132(1):31-43.
[4]Melnik O E,Barmin A A,Sparks R S J.Dynamic of magma flow inside voleanic conduits with bubble overpressure buildup and gas loss through Permeable magma[J].Journal of Voleanology and Geothermal Researeh,2005,143(13):53-68.
[5]Smith J V,Miyake Y,Oikawa T.Interpretation of porosity in dacite lava domes as ductile-brittle failure textures[J].Journal of Volcanology and Geothermal Research,2001,112(1/4):25-35.
[6]陈汉林,杨树锋,董传万,等.塔里木盆地二叠纪基性岩带的确定及大地构造意义[J].地球化学,1997,26(6):77-87.
[7]温声明,王建忠,王贵重,等.塔里木盆地火成岩发育特征及对油气成藏的影响[J].石油地球物理,2005,40(增刊):33-39.
[8]康玉柱.塔里木盆地塔河大油田形成的地质条件及前景展望[J].中国地质,2003,30(3):315-319.
[9]崔泽宏,汤良杰.塔河地区火成岩地震相及勘探潜力[J].新疆石油地质,2010,31(3):252-355.
[10]赵澄林.火山岩储层储集空间形成机理及含油气性[J].地质论评,1996,42(增刊):37-43.
[11]杨金龙,罗静兰,何发歧,等.塔河地区二叠系火成岩储集层特征[J].石油勘探与开发,2004,31(4):44-47.
[12]王月蕾,陈学国,郝志伟,等.准噶尔盆地哈山西地区石炭系火成岩裂缝预测[J].地质科技情报,2014,33(2):66-71.
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