Halliburton said on November 2, 2026 that it had acquired Keystone AS, a Norwegian software company that builds digital tools for planning and carrying out oil and gas wells. Keystone becomes part of Landmark, Halliburton's digital and software business.
Halliburton did not disclose the price or other financial terms, and did not say when the deal closed. The announcement describes the acquisition as completed.
Halliburton said Keystone's products will sit alongside its own Digital Well Program application and its Agile Asset Management offerings. It did not say whether Keystone's products will keep their names, where the team will be based or what roles its managers will take.
What Keystone built
Keystone sells three main products, according to Halliburton. SmartHUB is an integration layer that connects data and applications. OPEN is a digital workflow for planning and executing wells. RMS is a rig management and execution platform.
OffshoreSource reported that Keystone's software covers well planning and engineering, rig operations, logistics, equipment management and reporting. "Together, these applications extend Landmark's AI-native well-delivery ecosystem from the office to the rig," the publication wrote.
Halliburton said the acquisition gives Landmark's drilling and completion portfolio an integrated, AI-native digital workflow. Antoun framed the value of the deal as connecting well plans with execution, so that the engineering plan for a well and the operations that follow on the rig are handled in linked software.
“Keystone and Halliburton help customers collaborate more effectively and deliver wells with greater efficiency and confidence.”
Why Halliburton is buying
Tony Antoun, senior vice president of Halliburton Landmark, said Keystone's technology strengthens Landmark's delivery of digital workflows that connect well plans with execution. "Keystone and Halliburton help customers collaborate more effectively and deliver wells with greater efficiency and confidence," he said in the announcement.
"Together, we can apply data, science, and AI to automate workflows, sharpen decisions, and optimize well construction," Antoun said. He added that the purchase advances what Halliburton calls its Open by Design approach, which aims to connect applications across customers' digital ecosystems.
Trend, an Azerbaijani news agency that reported the deal, quoted Halliburton as saying the acquisition complements the company's existing solutions. Halliburton gave no revenue or customer figures for Keystone.
What is not known
Keystone's founding year, ownership and funding history were not disclosed with the deal, and no founder or chief executive was named in Halliburton's release. Halliburton did not say whether outside investors held stakes in the company or how many people work there.
Halliburton's announcement described Keystone only as a Norway-based software company that develops digital solutions for well planning and execution. OffshoreSource, Trend and Dealroom all carried the news on November 2, and none reported additional detail on the terms, the company's revenue or the number of operators using its software.
Because the purchase price was not disclosed, it is not possible to say how large the deal is for Halliburton, or whether Keystone's backers made a return. Halliburton did not say whether the deal was paid in cash.
Oilfield software buyers are busy
Keystone is Halliburton's second Norwegian software purchase this year. Dealroom noted that Halliburton bought InformatiQ, another Norway-based company, in June, and that rival SLB had recently acquired S&P Global Energy's portfolio and Tachyus.
On the same day as the Keystone announcement, Bentley Systems said its subsurface unit Seequent had bought Eliis, a French maker of seismic interpretation software, saying lower cost seismic data and AI were widening the use of its tools. Both deals add specialist software for working underground to a much larger owner.
For Keystone's customers, the open questions are how quickly its products will be folded into Landmark's suite and whether they will continue to connect to other vendors' systems, as Halliburton's Open by Design approach suggests. Halliburton has not yet published a road map for the combined products.
