Major oil discoveries have recently been made in Block T in the north of the Oriente Basin, Ecuador. The oil is reservoired in the M1 Sandstones of the Upper Cretaceous Napo Formation. To investigate the origin and charge history of the petroleum, a detailed geochemical study was carried out on 43 crude oil samples from 42 producing wells in Block T together with fluid inclusion analyses of three core samples from two wells.

中文翻译：

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厄瓜多尔东方盆地T区块上白垩统M1砂岩（纳波组）的地球化学特征和充油历史。

最近在厄瓜多尔Oriente盆地北部​​的T区块发现了重要的石油发现。石油储藏在上白垩统那坡组的M1砂岩中。为了调查石油的来源和装油历史，对T区块42个生产井中的43个原油样品进行了详细的地球化学研究，并对两个井中的三个岩心样品进行了流体包裹体分析。