全三维压裂设计软件在超深井压裂设计中的应用

APPLICATION OF FULL 3-D FRACTURING DESIGN SOFTWARE TO ULTRA DEEP WELL FRACTURING DESIGN

超深井压裂的施工泵压、温度很高，压裂工程师如果不能准确地预测施工泵压和裂缝中温度剖面状况，就很难做出适合超深地层的压裂设计，最终导致施工失败。文章针对塔里木ＤＨ 油田超深井特点，应用全三维压裂设计软件（Ｔｅｒｒａ Ｆｒａｃ） ，准确预测施工泵压，了解裂缝中温度剖面状况，掌握裂缝延伸规律，结合油藏模拟结果，进行了三口注水井的压裂优化设计，利用增压泵压裂车组，采用适合超深地层的优质、低伤害有机压裂液新体系，现场施工取得圆满成功，增注效果显著。

Because the pump pressure and temperature at the time that ultra deep well fracturing operation is made are very high,if fracturing engineer can not exactly predict the operating pump pressure and the temperature profile in fractures,it is difficult to make a fracturing design suited to ultra deep formation,leading to failure in the operation finally.In view of the characteristics of the ultra deep wells in Tarim DH oil field,an optimum fracturing design for the three water injection wells has been made through accurately predicting the operating pump pressure,understanding the temperature profile in fractures and mastering the fracture extending law by use of full 3-D fracturing design software (Terra Frac) and by combination with the results in reservoir simulation.The field operation came to a successful conclusion and obtained an obvious augmented injection effect by use of the boosting pump fracturing unit and the premium and low damage new organic fracturing fluid system suited to ultra deep formation.