Many U.S. producers of natural gas are working to develop massive new reserves in geologically tricky shale formations.
In football jargon, an offensive coach who designs running plays using the same flair he does when designing passing plays, a coach who creates a ton of multiple formations, tricky motions and even, in games, creates new material on the fly, well, that is a coach who has "a sharp pencil".
However, in fractured formation, it is very tricky to obtain initial fracture pressure due to the influence of rich natural fractures.
It has always been very tricky to explain the mechanism of formation of the first carbon-carbon bond in MTH reaction.
12 min: Malawi are playing three at the back from what I can make out (formations can be a little tricky from the TV), and the wing-backs are getting plenty of space.
The future is always tricky to predict, but the findings of our research demonstrate household formation trends over the last 10 years and set out a number of projections for our housing demand and need over the next 20 years.
Style & formation: Argentina often fielded a bold 4-3-3 formation in qualifying, although a more conservative 5-3-2 was deployed for tricky away fixtures.
Geologists have known since the 1970s that the formation was brimming with oil, but getting it out was technically tricky and unjustified by low oil prices.
Formation of a commission may be a classic way of dispensing with a tricky problem, but the 43-year-old prime minister has gone further than his predecessors.
Understanding the formation of extreme wrist structures, such as the mole's second thumb, is tricky given how little scientists know about how more banal wrist bones organize, he says.
