CAJ | 학술논문

实现经济高效开发已探明石油资源的途径之一就是立足现有的生产条件,使油藏开发动态实时处于最优状态,这也是智能油田的核心内容之一.将油藏视为一个复杂的动态系统,以油藏开发生产净现值最大化为目标,通过求解描述油藏开发生产的数学模型,实时优化油藏的输入输出控制参数,获取最优的生产方案.鉴于油藏生产优化方法是一个复杂的、大规模优化问题,选用了效率较高的梯度优化算法,利用极大值原理计算所需的梯度,再进行线性搜索,进而优化控制变量.油藏实例进行的分析结果表明,获得的最优生产方案符合油田实际情况,为智能油田体系提供了理论和技术支撑.
실현경제고효개발이탐명석유자원적도경지일취시립족현유적생산조건,사유장개발동태실시처우최우상태,저야시지능유전적핵심내용지일.장유장시위일개복잡적동태계통,이유장개발생산정현치최대화위목표,통과구해묘술유장개발생산적수학모형,실시우화유장적수입수출공제삼수,획취최우적생산방안.감우유장생산우화방법시일개복잡적、대규모우화문제,선용료효솔교고적제도우화산법,이용겁대치원리계산소수적제도,재진행선성수색,진이우화공제변량.유장실례진행적분석결과표명,획득적최우생산방안부합유전실제정황,위지능유전체계제공료이론화기술지탱.
One of the pathways to more efficiently and economically exploit the proved reserves is to produce oil in a dynamic real-time optimal state under the existing production conditions, which is one of the cores for the intelligent oilfield. The reservoir is recognized as a complex dynamic system, and the optimal object is to maximize the net present value of production in the reservoir optimization. By solving the mathematical model for describing the reservoir production status to determine the real-time control settings, the optimal production schedule can be obtained. Because dynamic production optimization of reservoir is a large-scale complicated optimization problem, an efficient gradient-based algorithm is used to treat the problem. The control gradients are obtained by the maximum principle firstly, and then the line searching method can determine the optimal control settings of each control step. The analysis on the application of above theory in oil reservoir shows that the optimal production scheme is coincident with the actual demand of oilfield.