松辽盆地昌德气田深层登三、四段底界面特征
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摘要
松辽盆地昌德气田登娄库组三、四段是深层主要产气层位,但井震地层界面不一致阻碍了该区油气勘探。从岩性、测井和地震等方面对登三、四段主要特征及关键界面特征进行综合研究,获取各段界面主要特征,并据此进行了对界面确定的调整。登三、四段岩性以泥岩为主,发育湖相和曲流河相。登三段电阻曲线呈高频中高幅指状或箱型,底面为一套砂岩组底界,泥岩组顶面,GR负台阶,电阻正台阶,地震剖面上具有上超和顶超的特征。登四段电阻曲线呈中高频中幅指状夹箱型,底界面为泥岩地层底界、砂岩地层顶界,GR正台阶,电阻负台阶,地震剖面上表现为整一。井震对比统层后,登三段底面有12口井,登四段底面有8口井进行调整。
The Third and Fourth Members of Denglouku Formation(K1d3 and K1d4) are the important gas productive reservoirs in Changde gas field,Songliao Basin.However,the interfaces of K1d3 and K1d4 have been confused in definition before,which impeded the oil and gas exploration.The authors studied the characteristics of K1d3,K1d4 and key interface by lithological,logging and seismic analyses,and adjusted the defination of the interfaces based on their characteristics.Lithologically,the K1d3 and K1d4 mainly are composed of mudstone,developing lacustrine and meandering river facies.In the K1d3,the resistivity curve presents high frequency,medium-high amplitude,and finger or box shape.The base surface of K1d3 is the bottom boundary of sandstone and top boundary of mudstone,and the gamma ray curve shows negative step shaped,while the elective resistance shows positive step shaped with onlap and toplap characteristics in seismic profile.In the K1d4,the resistivity curve presents medium-high frequency,medium amplitude,finger and box interbed shape.The base surface of K1d4 is the bottom boundary of mudstone and top boundary of sandstone,and the gamma ray curve shows positive step shaped,while the elective resistance shows negative step shaped with concordance characteristics in seismic profile.Thus,the definitions on the imferfaces of 12 wells in the bottom of K1d3 and 8 wells in the bottom of K1d4 were adjusted.
The Third and Fourth Members of Denglouku Formation(K1d3 and K1d4) are the important gas productive reservoirs in Changde gas field,Songliao Basin.However,the interfaces of K1d3 and K1d4 have been confused in definition before,which impeded the oil and gas exploration.The authors studied the characteristics of K1d3,K1d4 and key interface by lithological,logging and seismic analyses,and adjusted the defination of the interfaces based on their characteristics.Lithologically,the K1d3 and K1d4 mainly are composed of mudstone,developing lacustrine and meandering river facies.In the K1d3,the resistivity curve presents high frequency,medium-high amplitude,and finger or box shape.The base surface of K1d3 is the bottom boundary of sandstone and top boundary of mudstone,and the gamma ray curve shows negative step shaped,while the elective resistance shows positive step shaped with onlap and toplap characteristics in seismic profile.In the K1d4,the resistivity curve presents medium-high frequency,medium amplitude,finger and box interbed shape.The base surface of K1d4 is the bottom boundary of mudstone and top boundary of sandstone,and the gamma ray curve shows positive step shaped,while the elective resistance shows negative step shaped with concordance characteristics in seismic profile.Thus,the definitions on the imferfaces of 12 wells in the bottom of K1d3 and 8 wells in the bottom of K1d4 were adjusted.
引文
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[12]《地球科学大辞典》编委会.地球科学大辞典(基础学科卷)[M].北京:地质出版社,2006:657.Editorial board of"Dictionary of Earth Sciences".Dic-tionary of Earth Sciences(volume of basic science)[M].Beijing:Geological Publishing House,2006:657.
[2]妥进才.深层油气研究现状及进展[J].地球科学进展,2002,17(4):565-570.TUO Jin-cai.Research status and advances in deep oiland gas exploration[J].Advance in Earth Sciences,2002,17(4):565-570.
[3]石昕,戴金星,赵文智.深层油气藏勘探前景分析[J].中国石油勘探,2005(1):1-10.SHI Xin,DAI Jin-xing,ZHAO Wen-zhi.Analysis ofdeep oil and gas reservoirs exploration prospect[J].China Petrleum Exploration,2005(1):1-10.
[4]李小地.中国深部油气藏的形成与分布初探[J].石油勘探与开发,1994,21(1):34-39.LI Xiao-di.Formation and distribution of deep oil and gasreservoirs in China[J].Petroleum Exploration and De-velopment,1994,21(1):34-39.
[5]王树学,周庆华,周庆强,等.松辽盆地徐家围子断陷深层天然气含气系统与成藏机制[J].天然气地球科学,2007,18(7):394-398.WANG Shu-xue,ZHOU Qing-hua,ZHOU Qing-qiang,etal.Gas-bearing system and accumulation mechanism ofdeep layer in Xujiaweizi fault depression[J].NaturalGas Geoscience,2007,18(7):394-398.
[6]姜传金,苍思春,吴杰.徐家围子断陷深层气藏类型及成藏模式[J].天然气工业,2009,29(8):5-7.JIANG Chuan-jin,CANG Si-chun,WU Jie.Types andpooling patterns of deep gas reservoirs in Xujiaweizi faultdepression[J].Natural Gas Industry,2009,29(8):5-7.
[7]张晓东,杨玉峰,殷进垠,等.松辽盆地昌德气田天然气成因及成藏模式[J].现代地质,2000,14(2):203-208.ZHANG Xiao-dong,YANG Yu-feng,YIN Jin-yin,et al.Origin and accumulation model of natural gases in Chang-de gas field,the Songliao Basin[J].Geoscience,2000,14(2):203-208.
[8]欧阳文生,曹代勇,董强,等.岩石地层界面的追踪对比在滚动勘探开发中的实用意义—以辽河西部凹陷西斜坡为例[J].石油实验地质,2004,26(1):53-57.OUYANG Wen-sheng,CAO Dai-yong,DONG Qiang,etal.Practicality of tracing of lithostratigraphical boundayfor step by step exploration and development-an exampleat western clinothem of Liaohe sub-basin[J].PetroleumGeology&Experiment,2004,26(1):53-57.
[9]郭宪璞,苏新,丁孝忠.塔里木盆地北缘白垩系—古近系界线研究[J].地质通报,2004,23(8):750-756.GUO Xian-pu,SU Xin,DING Xiao-zhong.Cretaceous-Paleogene boundary on the northern margin of the TarimBasin[J].Regional Geology of China,2004,23(8):750-756.
[10]孙革,孙春林,董枝明,等.黑龙江嘉荫地区白垩纪—第三纪界线初步观察[J].世界地质,2003,22(1):8-13.SUN Ge,SUN Chun-lin,DONG Zhi-ming,et al.Pre-liminary study of the cretaceous-tertiary boundary inJiayin of the Heilongjiang River area of China[J].World Geology,2003,22(1):8-13.
[11]高平,段红梅,何峰.东濮凹陷沙三段与沙四段界线划分[J].断块油气田,2006,13(2):8-10,16.GAO Ping,DUAN Hong-mei,HE Feng.Limit partitionof the third and the fourth sections of Shahejie Formationin Dongpu depression[J].Fault-Block Oil&GasField,2006,13(2):8-10,16.
[12]《地球科学大辞典》编委会.地球科学大辞典(基础学科卷)[M].北京:地质出版社,2006:657.Editorial board of"Dictionary of Earth Sciences".Dic-tionary of Earth Sciences(volume of basic science)[M].Beijing:Geological Publishing House,2006:657.
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