青藏措勤盆地下白垩统烃源岩中可溶有机质的地球化学特征

应用生物标志物分析技术、结合其它地化资料，对青藏高原措勤盆地下白垩统多巴组、郎山组烃源岩，进行了有机质的丰度，生源构成，沉积环境、成熟度及成油潜力等方面的初步研究。研究结果表明，该盆地下白垩统暗色碳酸盐岩的有机质丰度中等，类型较好，成熟度适中，具备了形成油气的条件。为该区进一步开展油气勘探工作提供了可靠的依据。

GEOCHEMICAL CHARACTERISTICS OF THE SOLUBLE ORGANIC MATTER IN THE LOWER CRECTACEOUS POTENTIAL SOURCE ROCKS IN CUOQIN BASIN,QINGZANG PLATEAU

Based on the analyses of bio-markers and geochemical data, the abundance of organic matter, the construction of biological source, sedimentary environment, maturity and the oil-generating potential of the source rocks in the lower Cretaceous Duoba and Langshan formations in the Cuoqin basin have been studied. The results show that the organic matter in the dark limestones of the lower Cretaceous is of medium abundance, good type and proper maturity. The limestones have hydrocarbon-generating potential. All the above have provided a sound background for advanced exploration in this area.