Overshot assembly

Overshot is widely used in drilling construction of all levels of aperture in geological and mining, metallurgy, construction, coal, petroleum, hydrology and other industries. It can absorb various magnetophilic substances at the bottom of the hole. Such as cemented carbide, steel particles, iron sheets, iron filings, various iron appliances in lost holes, etc.Practical experience tells us that fishing operation is inevitable. According to statistics, for every 5 wells salvaged, there may be 4 wells to be salvaged. Therefore, it is necessary to prepare common fishing tools