由美国能源部(DDE)实施的超短曲率半径辐式水平井,通过循环热采工程成功地提高了原油产量。此工程表明,这种新型的钻井和完井系统适用于重油油藏的热力开采。辐式井提高了辐状井和邻井的生产稳定性,产量可提高2～4倍,重力上升可减到最低或消除。此外,对于那些属于非均质或储量低而未打成直井的储藏。辐式井可以对其加以开 The ultra-short radius of curvature radial horizontal wells implemented by the U.S. Department of Energy (DDE) have succeeded in increasing crude oil production through cyclic thermal recovery. This project shows that this new drilling and completion system is suitable for the thermal recovery of heavy oil reservoirs. Spindled wells improve the production stability of radial wells and adjacent wells, yield can be increased by 2 to 4 times, gravity rise can be reduced to a minimum or eliminated. In addition, for those that are non-homogeneous or low reserves that have not been straightened into wells. The spindles can open it