Tianhe Petroleum Group is a global leading group company integrating oil, natural gas, shale oil, shale gas, geothermal, mine development, drilling tools and drilling tools, providing customers with problem solutions, products and services, and is committed to connecting the company's products and services to the world. At present, the business covers more than 50 countries and regions around the world, has been favored by international customers of oil companies and oil service companies in various countries, and has established a good strategic partnership.

In drilling and workover operation, the reversing spear is a tool mainly used for fishing of drill pipe, oil pipe and casing from fish hole. It can be used with internal cutter, bumper jar, etc.