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随着油田勘探开发的不断深入和发展,采出程度越来越大,注采关系不完善油层,能量呈“梯度”性下降。为探索补充地层能量的新途径,2010年开展了《低温自生气增能解堵技术》研究。文章详细介绍了该技术的技术原理。并进行了室内评价实验,室内实验表明:该技术可以在地层条件下发生化学反应产生大量气体(CO2、N2、NH3、NO2)增加油层能量。胀通或穿透地层孔隙,驱出孔隙流体,诱导非动用区流体流出;岩芯经过该技术处理后孔隙体积平均提高5.63%,说明该技术可以酸化近井地带岩石,解除无机堵塞,提高渗透率。现场应用了5口井,见到了较好的试验效果。
With the continuous deepening and development of oilfield exploration and development, the degree of recovery is getting larger and larger, the relationship between injection and production is not perfect, and the energy decreases in a “gradient”. In order to explore a new way to supplement the energy of the formation, a study on “self-induced gas booster plugging technology” was carried out in 2010. The article details the technical principle of the technology. The laboratory experiments show that this technology can generate a large amount of gas (CO2, N2, NH3, NO2) by chemical reaction in the formation to increase the reservoir energy. Expanding or penetrating the pore of the formation to drive out the pore fluid and induce the fluid to flow out of the non-use area. The pore volume of the core after the treatment increases by 5.63% on average, indicating that the technology can acidize the rock in the near-well zone, relieve the inorganic blockage and increase the penetration rate. Five wells were used on site, and a better test result was seen.