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二氧化碳吞技术是一种提高油井采收率的有效方法,主要是利用二氧化碳与地层中原油的相互作用,使原油体积膨胀,提高油藏压力,降低地层原油粘度,改善原油的流动性,进而达到提高油井产量的目的。通过对海26块二氧化碳吞吐技术的研究及现场试验,进行了可行性分析,该技术在海26块具有明显的增油效果,对提高深层稠油油藏难动用储量开发效果具有很好的推广应用价值。
Carbon dioxide swallowing technology is an effective way to enhance oil recovery. The main method is to make use of the interaction between carbon dioxide and crude oil in the formation to expand the volume of crude oil, increase reservoir pressure, lower the viscosity of crude oil and improve the fluidity of crude oil, The purpose of raising oil production. Through the study of 26 carbon dioxide huff and puff techniques and field tests on the sea, the feasibility analysis has been carried out. This technique has significant oil increase effect in Hai-26 block and has a good promotion to the development of difficult-to-use reserves in deep heavy oil reservoirs Value.