伊通盆地岔路河断陷油气资源评价
发布时间：2018-08-20 16:32
【摘要】：岔路河断陷位于盆地的东北部,是盆地内面积最大、油气产量最高的断陷,自西向东分布主要新安堡凹陷和波太凹陷。为了估算岔路河断陷的油气资源潜力,从油气生成、运移、聚集的成因角度出发,采用化学动力学法,计算得到源岩中有机质的生烃量,通过厘定排烃系数和聚集系数,最终计算出研究区总的油气资源量及油气资源分布情况。首先,通过收集的钻井、测井、地化等分析资料,从有机质丰度、类型、成熟度三方面展开烃源岩的定性评价。然后依据干酪跟热降解晚期生烃理论,选取主力生烃层的岩心样品,在实验室条件下快速升温条件下,模拟干酪跟地下生烃的过程,计算化学动力学参数,结合重建的埋藏史、热史模型,求取各层源岩中有机质生烃量。最后,在已知生烃量的情况下,乘以排烃系数和聚集系数,计算出该断陷的总的油气资源量。为了进一步的指导油气勘探,优化计算结果,采用网格逼近法获取油气资源在平面上的分布数据。研究结果表明:双阳组泥岩有机质丰度高、类型好、成熟度高,奢岭组泥岩次之,永吉组最差;新安堡洼槽在奢岭组末永吉组初时开始有抬升,波太洼槽地温梯度一直下降,直到齐家组开始才缓慢上升,两个凹陷均维持在3℃/100m~4.5℃/100m之间浮动。岔路河断陷资源量计算结果显示,新安堡的主力生油层为双阳组、奢一段和永二段,双阳组、奢岭组、永一段和永二段为波太的主力生油层。双阳组、奢一段和永二段是岔路河断陷中新安堡的主力生气层,波太的主力生气层为双阳组、奢岭组、永一段和永二段,且新安堡的生气量要大于波太。总体看来,岔路河断陷以生气为主。最终的油气资源评价结果显示:本次评价较第三次评价,石油资源量高出四倍,天然气资源量超出近三十倍,这意味着该断陷仍存在极大的勘探潜力。探讨岔路河断陷油气资源潜量,为投资决策者的勘探部署提供有力的依据。
[Abstract]:The Chailuhe fault depression is located in the northeast of the basin. It is the fault depression with the largest area and the highest oil and gas production in the basin. It distributes mainly from west to east in Xinanbao depression and Botai depression. In order to estimate the potential of hydrocarbon resources in Chailuhe fault depression, from the origin of generation, migration and accumulation of oil and gas, the hydrocarbon generation of organic matter in source rock is calculated by using chemical kinetics method, and the hydrocarbon expulsion coefficient and accumulation coefficient are determined. Finally, the total amount of oil and gas resources and the distribution of oil and gas resources in the study area are calculated. Firstly, through the collected data of drilling, logging and geochemistry, the qualitative evaluation of source rocks is carried out from three aspects of organic matter abundance, type and maturity. Then, according to the late hydrocarbon generation theory of cheese and thermal degradation, the core samples of the main hydrocarbon generating layer are selected, and under the condition of rapid heating in laboratory, the process of hydrocarbon generation between cheese and underground is simulated, the parameters of chemical kinetics are calculated, and the buried history of reconstruction is combined. Thermal history model is used to calculate the hydrocarbon generation of organic matter in each source rock. Finally, when the hydrocarbon generation amount is known, the total oil and gas resources of the fault depression can be calculated by multiplying the hydrocarbon expulsion coefficient and the accumulation coefficient. In order to further guide oil and gas exploration and optimize the calculation results, the grid approximation method is used to obtain the distribution data of oil and gas resources on the plane. The results show that the mudstone of Shuangyang formation has high organic matter abundance, good type and high maturity, followed by Huiling formation mudstone, and Yongji formation is the worst, Xin'anbaodao trough began to uplift at the beginning of the late Yongji formation of the Hailing formation, and the geothermal gradient of the Botaiwa trough has been decreasing. It was not until the Qijia group began to rise slowly that the two cavities were kept between 3 鈩，
本文编号：2194282
[Abstract]:The Chailuhe fault depression is located in the northeast of the basin. It is the fault depression with the largest area and the highest oil and gas production in the basin. It distributes mainly from west to east in Xinanbao depression and Botai depression. In order to estimate the potential of hydrocarbon resources in Chailuhe fault depression, from the origin of generation, migration and accumulation of oil and gas, the hydrocarbon generation of organic matter in source rock is calculated by using chemical kinetics method, and the hydrocarbon expulsion coefficient and accumulation coefficient are determined. Finally, the total amount of oil and gas resources and the distribution of oil and gas resources in the study area are calculated. Firstly, through the collected data of drilling, logging and geochemistry, the qualitative evaluation of source rocks is carried out from three aspects of organic matter abundance, type and maturity. Then, according to the late hydrocarbon generation theory of cheese and thermal degradation, the core samples of the main hydrocarbon generating layer are selected, and under the condition of rapid heating in laboratory, the process of hydrocarbon generation between cheese and underground is simulated, the parameters of chemical kinetics are calculated, and the buried history of reconstruction is combined. Thermal history model is used to calculate the hydrocarbon generation of organic matter in each source rock. Finally, when the hydrocarbon generation amount is known, the total oil and gas resources of the fault depression can be calculated by multiplying the hydrocarbon expulsion coefficient and the accumulation coefficient. In order to further guide oil and gas exploration and optimize the calculation results, the grid approximation method is used to obtain the distribution data of oil and gas resources on the plane. The results show that the mudstone of Shuangyang formation has high organic matter abundance, good type and high maturity, followed by Huiling formation mudstone, and Yongji formation is the worst, Xin'anbaodao trough began to uplift at the beginning of the late Yongji formation of the Hailing formation, and the geothermal gradient of the Botaiwa trough has been decreasing. It was not until the Qijia group began to rise slowly that the two cavities were kept between 3 鈩，
本文编号：2194282
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