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- Title
蒸汽吐吞稠油热采产量递减分析方法研究.
- Authors
杨建平
- Abstract
As an important method of reservoir parameter calculation and single well controlled reserves evaluation, production decline analysis has been widely used in conventional and unconventional reservoir evaluation and dynamic reserve calculation. However, researches on heavy oil reservoir production decline analysis model have rarely been reported. Therefore, based on the unsteady seepage theory, an unsteady mathematical model of radial composite reservoir with Newtonian and power law fluid is established to get NPI and Blasingame production decline characteristic curves. The results show that the characteristic curves can be divided into four flow stages, including Newtonian fluid radial flow stage, transition flow stage, power- law fluid radial flow stage and pseudo⁃steady-state flow stage. The NPI integral derivative curve of power-law fluid radial flow stage is a straight line with slope of (1-n)/(3-n). The higher the power-law index and mobility ratio indicates the larger value of power ⁃law fluid flow phase curve. The accuracy of the model is verified by fitting the measured data from Liaohe Oilfield.
- Publication
Journal of Petrochemical Universities / Shiyou Huagong Gaodeng Xuexiao Xuebao, 2022, Vol 35, Issue 3, p70
- ISSN
1006-396X
- Publication type
Article
- DOI
10.3969/j.issn.1006⁃396X.2022.03.011