延长油田水平井体积压裂工艺探索与实践

随着延长油田致密油水平井开发,常规压裂工艺存在施工排量小、加砂量小、加砂难度大、地层破裂困难、施工效果差等一系列技术问题,本文从探索致密油体积压裂适应性及有效的施工工艺出发,对比不同体积压裂工艺施工优缺点,结合延长油田地质特征,分析了体积压裂适应条件,并对延长油田体积压裂试验效果进行了评价,为致密油水平井高效开发提供一定的参考依据。

Exploration and Practice of Extending the Stage Fracturing Technology of Horizontal Wells in Yanchang Oilfield

With the development of tight oil horizontal wells in Yanchang oilfield,the conventional fracturing technology has a series of technical problems such as small construction displacement,small sand addition,difficult sand addition,difficult formation fracture and poor construction effect.In this paper,based on the exploration of the adaptability and effective construction technology of tight oil occummulation fracturing,the advantages and disadvantages of different volume fracturing technigues are compared,and combined with the geological characteristics of Yanchang Oilfield,the adaptive conditions of volumetric fracturing are analyzed,and the application effect of volumetric fracturing test is evaluated,which provides a certain reference basis for the horizontal and efficient development of tight oil.