压差起爆技术在超深井射孔测试联作中的应用

Application of Pressure Differential Detonating Technique in DST-Perforation Combined Operation of Ultra-deep Wells.

在射孔测试联作施工中 ,对于井筒内流体密度不能确定、测试压差较大或井筒承压能力较小的高温、高压超深井 ,采用压差起爆器可有效地提高成功率和安全性。文中简述了压差起爆器的结构、特点 ,并以塔里木油田克参 1井为例 ,说明了压差起爆射孔技术在高温、高压超深复杂井中的应用情况。

In the DST-perforation combined operation, to the high pressure and high temperature ultra-deep wells with unknown density of wellbore fluid, high test pressure differential or low wellbore pressure withstanding capacity, application of pressture differential detonator may effectively increase success ratio and safety factor. This paper briefly introduces the structure and features of pressure differential detonator, and with Well Kecan 1 in Tarim Oilfield as an example, describes the application circumtances of pressure differential detonating technique in high pressure, high temperature, ultra-deep and complicated wells.