Williams Cos. agrees to purchase Momentum Midstream LLC from private equity firm EnCap Flatrock Midstream in a transaction valued at up to $5.5 billion, according to reports. The deal is intended to expand Williams’ natural gas network, with Momentum Midstream’s assets serving the US Gulf Coast. Both outlets describe the transaction as a direct acquisition of Momentum Midstream by Williams, and both place the purchase price at a total value of up to $5.5 billion. The sources also link the purpose of the acquisition to increasing Williams’ reach and infrastructure in natural gas transportation and related operations in the Gulf Coast region. No additional deal terms, regulatory timeline, or closing conditions are specified in the provided summaries. The reports characterize the agreement as a strategic step for Williams to add midstream capacity through the acquisition of Momentum Midstream’s business from EnCap Flatrock Midstream.