Mestre, of St . Denis, France, reached her target depth of 561 feet ( 168 . 3 meters ), but experienced problems on her way up, Serra said.
12.
Designed as objective tools for well planning, they index the difficulty and indicate the amount of time a planned well is likely to take to drill to target depth.
13.
On June 10, it reached an initial target depth of 135 meters ( 445 feet ), the minimum for river navigation and for the dam's turbines to begin generating power.
14.
Depending on the conditions encountered ( e . g ., zones of differing formation pressure gradients ), three or four casing strings may be required to reach the target depth.
15.
Mestre reached her target depth of 561 feet ( 171 meters ), Serra said, at the beach near La Romana, about 130 kilometers ( 81 miles ) east of Santo Domingo, the capital.
16.
It was unclear whether she reached her target depth of 561 feet ( 171 meters ) at the beach near La Romana, about 130 kilometers ( 81 miles ) east of Santo Domingo, the capital.
17.
It was unclear whether she reached her target depth of 561 feet ( 171 meters ) at the beach near in La Romana, about 130 kilometers ( 81 miles ) east of Santo Domingo, the capital.
18.
The borehole reached its target depth of 4, 000 metres in April 1989 . The results of this drilling were used as parameters for the main borehole-for example the temperature gradient was higher than originally expected.
19.
Later, Nitsch declared on his blog that at the target depth, he suffered what he himself called a bewildering " blackout through narcosis " ( as opposed to through oxygen starvation ), and then waking up during the ascend.
20.
Sunday marked the one-year anniversary of the death of his wife, 28-year-old, French-born Audrey Mestre, who died last Oct . 12 after plunging into deep waters near La Romana, Dominican Republic with a target depth of 171 meters ( 561 feet ).
