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COLUMN-Watching for a drilling slowdown in North Dakota: Kemp

(Repeats Dec. 8 column with no changes to text. John Kemp is a Reuters market analyst. The views expressed are his own)

By John Kemp

LONDON, Dec 8 (Reuters) - In the next few months, everyone in the oil market will be intently watching the volume of new drilling activity in the shale plays of the United States for any signs of a slowdown in response to the fall in oil prices.

There are more than a dozen major shale plays in production. But just three account for almost all the rise in oil output since 2009 and nearly two thirds of all rigs in operation: the combined Bakken/Three Forks in North Dakota and the Eagle Ford and Permian in Texas.

These three are the most mature plays and least likely to be affected by the decline in prices. Marginal plays are more likely to bear the brunt of any decline in drilling activity. Nonetheless, the big three account for so much of the shale boom that any slowdown will have to encompass them.

Fortunately, drilling activity in North Dakota can be tracked in real time. North Dakota's Department of Mineral Resources (DMR), which regulates oil and gas drilling in the state, publishes comprehensive data on drilling permits in its Daily Activity Report, a monthly summary entitled the Director's Cut, as well as a daily list of rigs operating in the state, all on its website (www.dmr.nd.gov).

The department also publishes comprehensive monthly data on the number of wells and their daily output. In addition, public data is available on prices that Bakken producers are able to realise for their crude from buyers such as Plains Marketing, which posts standardised buying prices on its website (www.paalp.com), as well as from the DMR.

With all this information, it is possible to establish an accurate baseline for the amount of drilling activity in the state before the price slide and how drilling activity responds to lower prices.

A Reuters' chartbook on "Benchmarking the Bakken", which shows the most important statistics and time series, can be downloaded here: http://link.reuters.com/nuc63w.

NO DRILLING SLOWDOWN YET

The first point to note is that while oil prices have been falling since mid-June, the volume of drilling activity, as measured by applications for new permits, has shown no sign of slowing so far.

In October, exploration and production companies filed for permits to drill 328 new wells, the second-highest number on record. In the weeks since then, there has been no clear evidence of a slowdown, according to the daily lists published by DMR.

The sharp drop in prices should eventually feed through into less drilling and slower output growth, but there is no sign of that happening yet.