− | [[file:Mth14ch00f01.jpg|thumb|left|300px|Simple vertical profile of a horizontal well, illustrating basic terms.]]
| + | Total measured length (TML) is the total length of a [[horizontal well]] from the surface datum to the toe. In general, it is referred to as measured depth (MD) and is determined ty the sum of lengths of individual joints of drill pipe, drill collars, and other drill-string components. |
− | Total measured length (TML) is the total length of a horizontal well from the surface datum to the toe. In general, it is referred to as measured depth (MD) and is determined ty the sum of lengths of individual joints of drill pipe, drill collars, and other drill-string components. | |