HOUSTON, June 26 (Xinhua) -- The number of active drilling rigs in the United States decreased by one to 265 this week, down by 702 year on year, according to the weekly data released Friday by Houston-based oilfield services company Baker Hughes.

These active drilling rigs included 188 oil rigs operating in the U.S. oil fields, down by one from the previous week; 75 gas drilling rigs; and two miscellaneous rigs, unchanged from last week.

The 265 rigs included 254 land drilling rigs, down by one from the previous week, and 11 offshore drilling rigs, unchanged from the previous week. There was no inland waters drilling rig this week, same as last week.

Of them, 20 are directional drilling rigs, 230 are horizontal drilling rigs and 15 are vertical drilling rigs.

During the week, the states of Colorado, Wyoming and New Mexico each lost one rig while the states of Texas and Oklahoma gained one rig, respectively.

By far, the Permian Basin in western Texas and eastern New Mexico has been the largest source of shale oil production growth in the United States, having become an engine of supply growth outside the Organization of the Petroleum Exporting Countries in the past years. Enditem

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