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首页> 外文会议>Indonesian Petroleum Association Twenty-Eighth Annual Convention Vol.1, Feb 26-28, 2002, Jakarta >HYDROCARBON PLAY CONCEPTS FOR THE IRIAN JAYA FOLD BELT
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HYDROCARBON PLAY CONCEPTS FOR THE IRIAN JAYA FOLD BELT

机译：伊里安·贾亚（Ilian Jaya）折叠腰带的油气比赛概念

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摘要

New Guinea hosts diverse petroleum systems ranging from the giant Tangguh/Bintuni Basin gasfields and Salawati Basin oilfields in the Bird's Head area, through the Hides gasfield and Kutubu oilfields in the Papuan Fold Belt to the large Pandora gasfield in the Gulf of Papua. In between lies the sparsely explored Irian Jaya Fold Belt (IJFB) with common oil shows and two non-commercial oil discoveries. Three new play concepts are proposed. 1) Along the front of IJFB, thick Late Miocene-Recent molasse buries potential Mesozoic source rocks to >5km, currently in the oil window and charging foothills and southern IJFB structures, and perhaps stratigraphic traps in the foreland. Structural traps formed in the Pliocene-Recent, pre-dating or synchronous with expulsion. A favorable petroleum system in the southern IJFB depends on porosity preservation within the Cretaceous Ekmai and Woniwogi Formations. 2) Middle-Late Miocene marls deposited in a restricted foreland basin provide a potential new play opportunity, as in the northern Lengguru Fold Belt. In the foothills of the IJFB, these rocks are interpreted to be in the oil window at maximum temperatures and in thrust contact with thick Ekmai Formation sandstones. Involvement of the Ekmai Formation as the primary reservoir minimizes the main risk of deep burial and resulting poor reservoir quality. 3) A basement high separating the western IJFB from theWaghete area is flanked by a series of long-lived marginal graben. These provide important depocenters for Mesozoic source rocks, potentially including turbiditic facies of the Tipuma Formation redbeds. Plio-Pleistocene inversion of these graben forward of the main uplift in the IJFB resulted in relatively simple structures. Reservoir quality is maintained near the basement high due to the relative decrease in burial compared to adjacent areas.
机译：新几内亚拥有各种各样的石油系统，从鸟头地区的巨大的Tangguh / Bintuni盆地气田和Salawati盆地的油田，到Papuan Fold带的Hides气田和Kutubu油田，再到巴布亚湾的大型Pandora气田。介于两者之间的是稀疏勘探的Irian Jaya褶皱带（IJFB），其中有常见的石油展览和两个非商业性的石油发现。提出了三个新的游戏概念。 1）沿着IJFB的前部，厚的中新世-最近的糖蜜将潜在的中生代烃源岩埋藏到> 5km，目前在油窗内，充填山麓和IJFB的南部构造，也许还有前陆的地层圈闭。在上新世最近形成的构造圈闭，可能是驱逐之前或与驱逐同步发生的。 IJFB南部的有利石油系统取决于白垩纪Ekmai和Woniwogi组内的孔隙保存。 2）与北部伦古鲁褶皱带一样，沉积在前陆盆地受限的中新世中晚期泥灰岩提供了潜在的新的开采机会。在IJFB的山麓下，这些岩石被解释为处于最高温度下的油窗中，并且与厚厚的Ekmai地层砂岩发生推力接触。 Ekmai地层作为主要储层的介入将使深埋和由此导致的储层质量差的主要风险降到最低。 3）地下IJFB与Whehete地区分隔开的地下室高处，旁边是一系列长寿的边缘地grab。这些为中生代烃源岩提供了重要的沉积中心，可能包括Tipuma组红层的浊流相。 IJFB的主要隆升前缘的这些上新世更新世反演导致结构相对简单。与邻近区域相比，由于埋葬的相对减少，地下室附近的水库质量得以维持较高水平。

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