低渗透油藏压裂技术的评价与研究.docxVIP

摘 要 低渗透油藏在我国分布极其广泛,而且资源相当丰富，近几年我国探明的石油地质储量中,低渗透油藏储量约占石油总储量的60%～70%,显而易见开发此类油藏具有重要的现实意义。但是由于低渗透油藏具有常规油藏不具备的特殊性,其生产井的自然产能都很低,要较好地开发此类油藏,必须对其实施人工压裂,人工压裂是改造低渗透油藏的重要增产措施,是实现其经济开发的必要手段。低渗透油藏往往需要进行大规模的人工压裂,耗资巨大,压裂后如何正确评价和分析其效果显得十分的重要,然而到目前为止仍然没有有效的方法来评价低渗透油藏压裂后的效果。因此,本文以油层渗流力学和油藏工程为理论基础,对低渗透油藏压裂效果的产能试井方法进行了研究，得出了一种较为简洁的对压裂效果进行评价的方法。并对莫119井压裂前后的产能进行了对比，验证了此方法的可行性。又根据经济学原理，阐述了低渗透油藏压裂效果的经济评价方法，给出了相应的公式。 关键词：低渗透油藏；压裂效果评价；产能分析方法；经济评价方法 Abstract The low-permeability oil reservoir spread widely in our country and the resources is very rich. In recent years, low-permeability reserve account for 60-70% in proven reserve. Obviously, it has great realistic significance to exploit this kind oil reservoir. But due to the reasons that the low-permeability oil reservoir is different from general oil reservoir and it has a lot of particularity, the natural deliverability of producing well is very low. If we want to exploit this kind oil reservoir preferably, we must bring the formation hydraulic fracturing into effect. On the one hand, the formation hydraulic fracturing is the most important stimulation treatment reconstructs the low-permeability oil reservoir. On the other hand, it is also a necessary measure that we economically exploit the low-permeability oil reservoir. On account of consuming huge capital to operate the massive scale hydraulic fracturing of this kind oil reservoir, well than it is very important how to appraise and analysis its fracturing effect exactly. But we have no effective method to appraise the fracturing effect in the low-permeability oil reservoir at present. Therefore, on the theory base of the reservoir fluid mechanics and oil reservoir engineering, low permeability reservoir fracturing effect on the evaluation of the economic evaluation methods and deliverability testing methods were studied in this paper, obtained a more concise evaluation of the effects on the fracturing method. And in this paper, we compared the production capacity of mo 119 well,