Coring tool is a tool to obtain formation sample operation in the petroleum and geologic exploration drilling
These types are suitable for well-consolidated formation.
1. Outer....

discussed

Drilling jar is a first selected tool for directional well, complicated well and deep well.
Note: The drilling jar which is connected with drill tool and worked with drill string....

Releasing and circulating overshot is an external fishing tool for engage, pack off and retrieve tublar fish, especially for fishing drill collar and drill pipe. The grapple of....

Replaceable sleeve stabilizer consists of an integral mandrel and a sleeve. One mandrel series can be equipped with different size of sleeve for serval hole sizes. The sleeves are....