塔城盆地烃源岩特征及勘探潜力分析
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摘要
塔城盆地勘探程度较低,主力生油层及勘探目的层资源潜力认识不足,制约了油气勘探步伐。本次研究通过在塔城盆地周缘开展野外地质调查、样品采集、测试分析工作,并通过生烃模拟手段,整体评价了该区烃源岩特征和勘探潜力。研究表明:塔城盆地发育泥盆系、石炭系、二叠系3套烃源岩,其中石炭系为盆地主要烃源岩发育层段,泥盆系及二叠系为次要烃源岩发育层段;烃源岩演化特征表明地质历史时期已经发生过生排烃,石炭系、二叠系和第三系成藏组合中可能存在古油藏和次生油气藏,综合评价认为塔城盆地应该具有一定的油气勘探潜力。
Because of the low degree of exploration,the source rocks and resource potential of main plays in Tacheng basin is lack of knowledge,which has restricted the oil and gas exploration pace.Through the field geological survey,sample collection,test and analysis work,and through the hydrocarbon generation simulation method,the source rocks features and exploration potential are evaluated.The results show that:Devonian,Carboniferous and Permian are the main source rocks;carboniferous is the main hydrocarbon source rock in the basin,Devonian and Permian are secondary source rocks.Source rock evolution characteristics show that has the hydrocarbon generation and expulsion has occurred during the geological history,and it is possible that the paleo oil reservoir and secondary hydrocarbon reservoirare developed in Carboniferous,Permian and Tertiary plays,and shows that Tacheng basin should have a certain potential for oil and gas exploration.
Because of the low degree of exploration,the source rocks and resource potential of main plays in Tacheng basin is lack of knowledge,which has restricted the oil and gas exploration pace.Through the field geological survey,sample collection,test and analysis work,and through the hydrocarbon generation simulation method,the source rocks features and exploration potential are evaluated.The results show that:Devonian,Carboniferous and Permian are the main source rocks;carboniferous is the main hydrocarbon source rock in the basin,Devonian and Permian are secondary source rocks.Source rock evolution characteristics show that has the hydrocarbon generation and expulsion has occurred during the geological history,and it is possible that the paleo oil reservoir and secondary hydrocarbon reservoirare developed in Carboniferous,Permian and Tertiary plays,and shows that Tacheng basin should have a certain potential for oil and gas exploration.
引文
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[2]姚远,吴传勇,罗福忠,等.新疆塔城盆地东缘冬别列克断裂晚第四纪活动特征[J].内陆地震,2015(1):71-76.
[3]连政,陈君华.西准噶尔加里东期侵入岩的发现及地质构造意义[J].新疆地质,2014(4):441-444.
[4]吕铁良,曲彦胜,王圣柱,等.塔城盆地构造演化及对油气成藏的影响[J].特种油气藏,2015(1):41-45.
[5]王宇,卫巍,庞绪勇,等.塔城地区晚泥盆世沉积特征及其构造古地理意义[J].岩石学报,2009,25(4):399-707.
[6]冯乾文,郑光华,张晓帆,等.塔城盆地石炭系基底的重磁电震联合反演[J].新疆大学学报:自然科学版,2009,26(2):242-246.
[7]蒋宜勤,高岗,柳广弟,等.塔城盆地石炭系烃源岩特征及其生烃潜力[J].石油实验地质,2012,34(4):427-431.
[8]裴立新,高岗,王绪龙,等.新疆北部吉木乃盆地与塔城盆地石炭系烃源岩特征[J].天然气地球科学,2012,23(1):88-91.
[9]陆俊泽,余谦,白洪海,等.塔城盆地南缘下二叠统卡拉岗组烃源岩有机地化特征及生烃潜力[J].矿物岩石,2017,37(2):84-90.
[10]向坤鹏.新疆西准噶尔包古图-哈拉阿拉特山一带石炭纪沉积盆地分析及构造意义[D].西安:长安大学,2015.
[11]米敬奎,张水昌,王晓梅.不同类型生烃模拟实验方法对比与关键技术[J].石油实验地质,2009,31(4):409-414.