台吉乃尔含气构造初步认识与勘探建议
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摘要
台吉乃尔气藏并不严格受背斜控制,而是背斜背景上的岩性气藏。这与前人所认为的三湖地区第四系天然气分布严格受低幅度同沉积背斜控制的结论有所差距。台吉乃尔含气地震异常平面分布范围、形态与背斜不一致;其次,k5标准层的优质储层发育不受背斜控制;第三,k5标准层气藏是一个背斜背景上的岩性气藏;第四,台中2井气藏是砂岩上倾尖灭气藏。台吉乃尔构造的气体具有混源特征,生气强度大,目前该地区岩性气藏勘探程度低,勘探潜力大,建议加强岩性气藏成藏规律研究,加强岩性气藏及背斜背景上的岩性气藏等复合气藏的勘探力度。
Gas accumulation of the Taijinaier structure is not a structure gas reservoir but a non structure gas reservoir under anticline environment on the basis of the study. This cognition may be inconsistency to the conclusion that the gas reservoir is under the domination of the lower range anticline in the Sanhu area. The reasons to the cognition as follows: the first is that the shape and it's extension of the seismic abnormity is not consistent to the anticline; the second, the high quality reservoir's development is not under the control of the anticline in the k5 standard layer; the third, the gas accumulation is a non structure gas reservoir under the environment of the anticline in the k5 standard layer; finally, the gas accumulation of the well Taizhong2 is a gas reservoir of the sand vanish in the upper way. The gas of the Taijinaier structure has the characteristic of the commixture, there is a high intensity of gas production in the study area. At present there is lower non structure gas reservoir exploration degree, so it has a high exploration potential. It pointed out that we should reinforce the study degree of the rule to the non structure gas reservoir. At the same time, we should reinforce the exploration degree of the non structure gas reservoir and it's correlation gas reservoir.
Gas accumulation of the Taijinaier structure is not a structure gas reservoir but a non structure gas reservoir under anticline environment on the basis of the study. This cognition may be inconsistency to the conclusion that the gas reservoir is under the domination of the lower range anticline in the Sanhu area. The reasons to the cognition as follows: the first is that the shape and it's extension of the seismic abnormity is not consistent to the anticline; the second, the high quality reservoir's development is not under the control of the anticline in the k5 standard layer; the third, the gas accumulation is a non structure gas reservoir under the environment of the anticline in the k5 standard layer; finally, the gas accumulation of the well Taizhong2 is a gas reservoir of the sand vanish in the upper way. The gas of the Taijinaier structure has the characteristic of the commixture, there is a high intensity of gas production in the study area. At present there is lower non structure gas reservoir exploration degree, so it has a high exploration potential. It pointed out that we should reinforce the study degree of the rule to the non structure gas reservoir. At the same time, we should reinforce the exploration degree of the non structure gas reservoir and it's correlation gas reservoir.
引文
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杜金虎,易士威,卢学军,等.2004.试论富油凹陷油气分布的“互补性”特征[J].中国石油勘探,9(1):15-22.
管志强,党玉琪,王金鹏,等.2002.柴达木盆地第四系生物气勘探现状及前景分析[J].中国石油勘探,7(1):67-73.
梁全胜,刘震,党玉琪.2005.柴达木盆地三湖地区第四系生物气成因类型的研究[J].中国西部油气地质,1(1):66-69.
刘震,赵阳,杜金虎,等.2006.陆相断陷盆地岩性油气藏形成与分布的“多元控油,主元成藏”特征[J].地质科学,41(4):612-635.
魏国齐,刘德来,张英,等.2005.柴达木盆地第四系生物气形成机理、分布规律与勘探前景[J].石油勘探与开发,32(4):84-89.
徐旺,薛超,邸世祺,等.1990.中国石油地质志(14)———青藏油气区[M].北京:石油工业出版社,208-212.
徐子远,谢丽,张道伟,等.2005.柴达木盆地第四系生物气的勘探历程与储量现状[J].新疆石油地质,26(4):437-440.
易定红,何琼英,杨勤林.2006.饶阳凹陷大王庄地区古近系层序地层特征[J].东华理工学院学报,29(3):229-233.
易定红,石兰亭,贾义蓉.2007.吉尔嘎朗图凹陷宝饶洼槽阿尔善组层序地层与隐蔽油藏[J].岩性油气藏,19(1):68-72.
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