CAJ | 학술논문

缝洞型碳酸盐岩油藏由于其缝洞组合关系的复杂性,使得储层流体的渗流规律有别于常规油藏.根据某油田奥陶系缝洞型碳酸盐岩的实际情况设计制作了大尺度可视化物理模型,并按照现场实际设计了二注三采的实验井网及注采方案,以应用物理模拟实验来研究缝洞型碳酸盐岩油藏的开发特征及油井生产规律.结合实验结果,利用J.Cruz-Hernández建立的数学模型对生产数据进行拟合,以研究缝洞型碳酸盐岩油藏中流体的渗流机理,J.Cruz-Hernández数学模型中的空间系数和流动速度对采收率影响较大,提出模型的改进应考虑重力分异作用、溶洞比例等影响因素.
봉동형탄산염암유장유우기봉동조합관계적복잡성,사득저층류체적삼류규률유별우상규유장.근거모유전오도계봉동형탄산염암적실제정황설계제작료대척도가시화물리모형,병안조현장실제설계료이주삼채적실험정망급주채방안,이응용물리모의실험래연구봉동형탄산염암유장적개발특정급유정생산규률.결합실험결과,이용J.Cruz-Hernández건립적수학모형대생산수거진행의합,이연구봉동형탄산염암유장중류체적삼류궤리,J.Cruz-Hernández수학모형중적공간계수화류동속도대채수솔영향교대,제출모형적개진응고필중력분이작용、용동비례등영향인소.
The complexity in the fracture-vuggy carbonate reservoir makes its flowing law of formation fluid different from that of the normal reservoir. In order to recognize the special flow mechanism deeply, this paper has designed and established a large-scale visible model based on the actual conditions of Ordovician fracture-vuggy carbonate oil rocks in a reservoir. The experimental well network and injection/production strategy were planned according to the present field area. Also physical model experiments were conducted to study the developing characteristics and well production law. In order to reveal the flowing law of the fractured-vuggy reservoir, the experimental data have been analyzed carefully and used in fitting J.Cruz-Hernández′s fracture-vuggy carbonate water/oil two-phase flow mathematical model based on convective diffuse filtration theory. In addition, several affecting factors of this model have been discussed such as the fraction of the porous space, the coefficient of transfer of fluids and flow velocity. In the end, the paper proposes that such factors as gravity, and coordinate number of vug should be included in the development of the model.