In the previous week, the rig count had increased by 4, to 903.

In the last 11 weeks, the rig count has increased eight times.

In the previous week the rig count had increased by 13.

His forecast is for an average rig count of 920 this year.

The rig count was down by four the previous week, the company added.

Last week the rig count jumped by 51, to 945.

Last week's rig count of 916 was down 46 from the previous week.

During the previous week, the rig count had fallen by 11, to 894, the company said.

The rig count had dropped by 62 in the previous week.

In August 1999, the rig count was at a record low, 98.