Look for North America’s oil and natural gas producers to keep the capital discipline message going when second quarter results roll out, with oilfield services (OFS) operators alerting customers that equipment and supply prices are going to increase.

Three of the world’s top OFS companies kick off quarterly results in the coming days, with the exploration and production (E&P) companies to follow in the weeks ahead. Halliburton Co. is set to unveil its results on Tuesday, followed by Baker Hughes Co. on Wednesday and Schlumberger Ltd. closing out the week. In between, other operators will share their results,  including midstreamer Kinder Morgan Inc. on Wednesday.

According to Factset senior earnings analyst John Butters, the S&P 500 overall is likely to report its highest...