flat jewel without oil well non functional hole for

There is also a bolt that extends through the non-threaded hole and into the threaded hole.

A well screen is located inside the open-hole wellbore forming an annulus between the open-hole and the well screen.

A non-rotating downhole sleeve adapted for casing centralization in a borehole.

Typically, the well includes a cased hole section and may also include an uncased hole section.

Accordingly, a precision inner diameter hole having a predetermined dimension can be formed without precision pre-machining of the blank hole.

In embodiments, the bone plate comprises one or more "hole pairs" in which a non-threaded hole and a threaded hole are placed adjacent to one another.