The investigation of the Nyalau Formation and its offshore equivalents (Cycles I and I) using 1D-basin modeling was carried to evaluate the timing and maturity aspects of their petroleum system. The Nyalau Formation and its offshore equivalents show a very remarkable source rock sequence for oil and gas in the Sarawak Basin. About twenty typical samples of the Nyalau Formation, with its maturity range beginning at immature to early-mature were evaluated, adopting bulk and quantitative pyrolysis procedures to reveal the kerogen characteristics and define the inherent optical properties of the organic matter and the effect it has on petroleum generation. Pyrolysis data identified two organic facies that indicate petroleum generation tendencies; Kerogen Type II/III having fairly high values of hydrogen index (HI) above 200 mg HC/g TOC whilst the kerogen Type III is comparatively with low HI values below 200 mg HC/g TOC. The aforementioned is reinforced with respect to distribution appertaining to energy activation a derivative of the bulk kinetic analysis. This study in a wide distribution of energy activation of kcal/mole to 69 kcal/mol which is unswervingly correlated heterogeneously to the organic matter. Also, the bulk kinetic analysis shows substantial variation in petroleum formation tract with regards to onset as well as the Nyalau's source rocks samples peak generation temperatures.

At the temperatures between 121 and 131 °C petroleum generation for kerogen Type II/III commenced while at the temperatures of 134–145 °C for kerogen Type III. There is a variation of the peak generation temperatures (geological temperature maximum) in the range of 135–142 °C for Type II/III kerogens, whilst 153–167 °C for kerogen Type III. A notable transformation ratio of about 33% is reached as a result of these peak generation temperatures. The results were then integrated into the basin modelling, thereby predicting the timing, generation, and expulsion of hydrocarbons from the Nyalau equivalent source rocks in the offshore basin. This models suggests the onset of petroleum generation from Nyalau source rocks began in the Early Miocene (23-16 Ma), and the generation peaked at the Middle Miocene (18-12 Ma). The evolution and the expulsion of hydrocarbon as modeled indicate the timing of the expelled petroleum commenced in Pliocene and continued to present-day (5–0.0Ma). One dimensional basin models and bulk kinetics provide a quantitative way of predicting the timing, generation, and expulsion of hydrocarbon from Nyalau Formation within the Sarawak Basin.

使用一维盆地模型对Nyalau组及其海上等价物（周期I和I）进行了研究，以评估其石油系统的时间和成熟度方面。砂劳越盆地的Nyalau地层及其近海等价物显示出非常出色的烃源岩层序。评估了大约20种典型的Nyalau组样品，其成熟度范围从不成熟到早熟，采用大量和定量的热解程序揭示了干酪根的特性，定义了有机物的固有光学性质及其对有机物的影响。石油发电。热解数据确定了两个有机相，这些相表明了石油的生成趋势。II / III型干酪根具有高于200 mg HC / g TOC的相当高的氢指数（HI）值，而III型干酪根则具有低于200 mg HC / g TOC的低HI值。关于与能量活化有关的体积动力学分析的衍生物的分布，上述方面得到了加强。这项研究将能量激活的千卡/摩尔的分布范围扩展到了69 kcal / mol，这与有机物毫无关系。同样，整体动力学分析表明，在形成过程以及Nyalau的烃源岩样品的峰值生成温度方面，石油形成区域有很大的变化。关于与能量活化有关的体积动力学分析的衍生物的分布，上述方面得到了加强。这项研究将能量激活的千卡/摩尔的分布范围扩展到了69 kcal / mol，这与有机物毫无关系。同样，整体动力学分析表明，在形成过程以及Nyalau的烃源岩样品的峰值生成温度方面，石油形成区域有很大的变化。关于与能量活化有关的体积动力学分析的衍生物的分布，上述方面得到了加强。这项研究将能量激活的千卡/摩尔的分布范围扩展到了69 kcal / mol，这与有机物毫无关系。同样，整体动力学分析表明，在形成过程以及Nyalau的烃源岩样品的峰值生成温度方面，石油形成区域有很大的变化。

在121至131°C的温度下，开始生成II / III型干酪根的石油，而在134–145°C的温度下生成III型干酪根。II / III型干酪根的峰值产生温度（最高地质温度）在135–142°C之间变化，而III型干酪根的峰值产生温度在153–167°C之间变化。这些峰值产生温度的结果达到了约33％的显着转化率。然后将结果整合到盆地建模中，从而预测海上盆地Nyalau等效烃源岩中碳氢化合物的时间，生成和排出。该模型表明，从Nyalau烃源岩开始的石油生成始于中新世早期（23-16 Ma），而这一峰值在中新世中期（18-12 Ma）达到顶峰。模拟的碳氢化合物的演化和驱出表明驱出石油的时间始于上新世并一直持续到今天（5-0.0Ma）。一维盆地模型和整体动力学提供了一种定量的方式来预测砂拉越盆地内Nyalau组烃的时间，产生和排出。