柴达木盆地北缘大柴旦区块的平顶山-黄泥滩构造带、大柴旦断陷带和欧南断陷带油气成藏条件各不相同.绿梁山南翼的平顶山-黄泥滩构造带中、下侏罗统暗色泥岩发育,古近-新近系和中生界冲积扇、河流-泛滥平原相沉积中砂泥岩储层广布,背斜构造发育,且形成时间早,有利于寻找构造油气藏;绿梁山北翼的大柴旦断陷带侏罗系暗色泥岩也很发育,烃源条件良好,但断裂作用强,构造破碎,以寻找小断块、断鼻和岩性地层圈闭油气藏为宜;东部欧南断陷带侏罗系烃源岩发育,侏罗系、白垩系及古近-新近系碎屑岩储层发育,并且周边地区也获得工业油流或见不同程度的油气显示,但缺少构造圈闭,应以寻找岩性和地层圈闭油气藏为主.

There are different hydrocarbon accumulation conditions in the Pingdengshan -Huangnitan structure, the Dachaidan fault depression and the Ounan fault depression of Dachaidan block in the northern margin of the Qaidam basin. The Pingdengshan -Huangnitan structure at the south limb of Luliang mountain with well developed Middle and Lower Jurassic black mudstones, widely distributed Mesozoic and Tertiary reservoirs consisting of alluvial fans and fluvial -flood plain sediments, and well developed anticlines, is an ideal location for exploration of structural oil pools. The Jurassic black mudstones are also well developed in the Dachaidan fault depression at the north limb of Luliang mountain, however, the strong fault activity results in structural break and only small fault block, fault nose and lithologic reservoirs can be found in the area. The Jurassic source rocks and the Jurassic, Cretaceous and Tertiary clastic reservoirs are well developed in the Ounan fault depression in the east, but there are rare structural traps. The main exploration should pay more attention to the lithologic and stratigraphic traps.

近年来,王庄地区地层油气藏勘探获得重大突破,相继发现了太古界、古生界、沙三段、沙一段和馆陶组等多套含油层系,油藏类型有原生砂岩体(岩性上倾尖灭和透镜体)油气藏、地层不整合遮挡油气藏、超覆不整合遮挡油气藏和生物礁块油气藏等.成藏条件分析表明,处于盆地边缘的王庄地区发育多种地层圈闭和两种输导体系.对于它源型油气藏来说,输导体系起着至关重要的作用,油层多沿输导层分布,形成上下叠置的复式地层油气藏.

人工合成地震记录,在不考虑多次波及系数,其制作比较简单[1],但仍存在一些问题.首先表现在褶积模型的简化,其次是深时转换不准、测井曲线畸变、处理与解释脱节以及制作人员对地质资料掌握不够等,这些都影响了合成地震记录的质量.中石化所属准噶尔盆地中部区块以寻找低幅度构造和岩性油气藏为主,故需要高精度的合成地震记录,以达到在对标致层标定的同时,对储层进行准确标定.笔者在Z1、S1、ZH1、Z101、Z103等井的合成地震记录的制作过程中,从反射系数序列、子波、深时转换等几方面入手,努力探索提高合成地震记录质量的途径和方法,取得了明显的效果.