盆地模拟技术新进展(一)──国内外发展状况

NEW ADVANCEMENT IN BASIN MODELLING TECHNOLOGY (Ⅰ)- PRESENT DEVELOPING SITUATION

盆地模拟技术已有近20年发展历史，已进入实际应用阶段，技术难点是排烃史和运聚史模拟。国外近10年以二维模型为主，正在研究全自动模拟过程中增添人工干预界面，使石油地质家能便捷地修改参数、修正模拟结果，并与常规分析紧密结合，力图提高模拟精度。国内盆地模拟技术吸收国外先进方法，多有创新，在碎屑岩系拉张型盆地应用的地质效果较好，已建立综合评价的操作平台，但薄弱环节和发展重点也是排烃史和运聚史模拟。在软件性能方面，国内与国外的软件相比，地质模型稍强，数值方法销差，软件水平相当，商品化程度不够。关于我国盆地模拟技术发展；提出：加强地质机理及数值方法研究，发展“人工干预界面”技术，重视实际应用，引入竞争机制，避免低水平重复。

The basin modeling techniques have been developed for nearly 20 years, and have come to the stage of practical application.its technical difficult is the simulation of the histories of hydrocarbon expulsion and migration-accumulation. In the foreigncountries, the 2D model has been adopted in the recent 10 years; and the interactive intervention interface in the all-automaticsimulation is being studied, to facilitate the petroleum geologists to modify parameters and results, and to combine thesimulation with the conventional analysis closely, and to increase the accuracy of simulation finally. In China, some advancedtechniques are taken from abroad, but most of them are created by Chinese ; its application in tensional basins is better thanthat in compressional basins ; the operating platform of the integrated evaluation is set up; the simulation of the histories ofhydrocarbon expulsion and migration - aceumulation is still the weakest part of the system but the most important one fordevelopment. Comparing the software performance in China with that in the foreign countries, it comes to the conclusion thatthe geological model of the former is little better than that of the latter; the numerical method of the latter is little better thanthat of the former; the software level is almost equal between the two; the sofware commercialization of the latter is betterthan that of the former. The suggestions for developing Chinese basin modeling techniques are presented as follows: harderstudy of geological mechanism and numerical method ; development of the interactive intervention interface ; importance of thepractical applications ; introduction of the competition system ; avoidance of the repeating the low.