干扰试井技术在苏码头构造的应用

Application of Interference Well Test to Sumatou Structure

目前苏码头气田气井压力下降快,稳产时间短,气井之间关井压力和产能差异大,特别是经加砂压裂后,井内情况复杂,采用传统的试井工艺难以达到测试要求,严重影响了开发效果。为了加深对气田储层特性的认识,选定码浅14-4井、14-2井作为干扰试井技术的研究对象,将现代电子压力计技术与传统试井技术相结合,在极短时间内确定气田的压力系统,快速实现对井间连通情况的判别,以研究并提高蓬莱镇组气藏的稳产能力。

Currently in Sumatou gasfield, well pressures drop down sharply, stable production period is short, and there is a great difference in shut-in pressure and deliverability among different wells. Especially after sand fracturing, the situations in borehole become more complex. It is difficult to achieve the testing requirement by the previous well testing technologies, which seriously affected the development effect. Well Maqian14-4 and well Maqian 14-2 are chosen as the studied objectives of interference well test to deepen our understanding of reservoir characteristics. By combining modern electronic manometer with conventional well testing, the pressure system of gasfield is determined in a very short time and the discrimination of well connectivity is fast implemented to enhance the stable production capability of Penglaizhen Formation gas reservoir.