The U.S. oil and gas rig count climbed to 588 this week, up seven from the week before, according to the latest Baker Hughes rig count. Canada's count fell by 19 over the same period, to 198 rigs.

A rig count tracks the number of drilling rigs actively working to find or develop oil and natural gas.

Permian leads the gains

Three basins added rigs this week, and no basin recorded a decrease. The Permian picked up three rigs to reach 259, still by far the largest concentration of active rigs Baker Hughes tracks and now close to half of the entire U.S. total. The Granite Wash added one rig to reach 20, and the Barnett added one to reach 1.

The rest holds steady

Every other major basin held flat week over week. The Haynesville stayed at 55 rigs and the Eagle Ford at 47. The Marcellus held at 24 rigs and the Utica at 12. The Williston stayed at 27, the DJ-Niobrara at 10, and the Cana Woodford at 20. The Ardmore Woodford held at 2 and the Arkoma Woodford at 1, and the Mississippian remained at zero.

A longer look

The current 588-rig U.S. total is up from 562 rigs on June 15, according to Baker Hughes data. WTI crude stood at $84.65 a barrel and Henry Hub gas at $3.06 per MMBtu as of that same date, according to the EIA.

Canada's 19-rig decline is a bigger single-week move than any change on the U.S. side, where the largest gain was three rigs in the Permian. The rest of the U.S. report was flat, with no basin losing rigs and most holding at the same count as the week before.