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WES customer relationships

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Western Midstream (WES): Customer Structure, Contracting and Concentration — what investors need to know

Western Midstream operates a geographically concentrated midstream platform that gathers, processes, treats, transports and disposes of natural gas, NGLs, crude oil and produced water, and it monetizes through a mix of fee-based contracts (both usage-based and fixed-fee structures), minimum-volume commitments and cost-of-service arrangements. Recent contract renegotiations in the Delaware Basin have moved material volumes from legacy cost-of-service terms to simplified fixed fees, exchanged in part for WES common units, reshaping near-term cash flow exposure and counterparty economics. For deeper diligence and relationship-level sourcing, visit https://nullexposure.com/.

How WES gets paid and why that matters to investors

Western’s business model is built to generate stable, lower-volatility cash flows relative to upstream producers: a portfolio of long-dated commercial arrangements (commonly 5–10 year initial terms) layered with usage-based fees and explicit minimum-volume protections. That blend preserves upside when volumes are strong while limiting downside through deficiency payments and cost-of-service backstops. Geographically, operations are concentrated in West Texas and the Rocky Mountains, which focuses both operational exposure and counterparty risk in a handful of basins. These structural attributes explain why WES trades with midstream multiples (EV/EBITDA ~10.4 in the latest data) and maintains an elevated distribution yield profile.

If you want a consolidated view of WES customer exposures and contract changes, start here: https://nullexposure.com/.

Relationship roll call — the counterparties investors should be tracking

Occidental / Oxy

Western relies heavily on Occidental-related production: Occidental accounted for approximately 60% of total revenues and more than three-quarters of produced-water throughput in 2024, underscoring a concentrated revenue profile and operational reliance on Occidental-controlled volumes. Recent Delaware Basin contract amendments converted legacy cost-of-service natural-gas gathering contracts to a fixed-fee structure supported by acreage dedication, and Occidental agreed to transfer millions of WES common units as part of negotiated fee concessions. (Sources: WES 2024 Form 10-K; PR Newswire and Finviz reporting, March 2026; Q4 2025 earnings commentary.)

Oxy — Bronco CAP and activity reallocation

Western’s Q4 2025 earnings call disclosed that Occidental’s development of the Bronco CAP area will deliver incremental volumes into WES systems in 2026, though Occidental has also reallocated some activity away from acreage WES services in other basins. This dynamic will shift throughput timing and highlights the operational linkage between producer capex and WES revenue flows. (Source: Q4 2025 earnings call transcript, March 2026.)

ConocoPhillips

ConocoPhillips has become a contracted customer in the Delaware Basin under a new dedication and fixed-fee arrangement, adding a new source of fee-based revenue on volumes already on WES’s system. The company announced these amendments alongside Occidental negotiations, and ConocoPhillips’ commitment reduces single-counterparty exposure while introducing additional fee predictability. (Sources: PR Newswire release, TradingView and SahmCapital coverage, March 2026.)

Phillips 66

WES management cited steady onload activity from Phillips 66 as supportive of natural gas throughput in the near term, indicating Phillips 66 is a continuing operational contributor rather than a new structural shift in the contract mix. (Source: Q4 2025 earnings call transcript, March 2026.)

Anadarko E&P Onshore

Western amended its gas gathering agreement with Anadarko E&P Onshore to shift to fixed fees, add a minimum volume commitment through 2027, and update dedication transfer and release provisions—terms that increase revenue visibility and reduce short-term throughput volatility for that agreement. (Source: TradingView report summarizing material agreements, March 2026.)

Iofina

The partnership with Iofina centers on using Western’s produced water as feedstock for a large IOsorb iodine plant, illustrating how WES’s expanded water-handling capability and the Aris acquisition create new commercial pathways beyond traditional gathering and processing fees. This is a nascent but strategic non-traditional revenue line tied to the water business. (Source: SahmCapital analysis, January 2026.)

What the constraints tell investors about operating posture and risk

WES’s extracted constraints show a deliberate commercial design:

  • Contracting posture — long-term and fee-focused. Contracts commonly have 5–10 year initial terms and transportation agreements extend into the 2030s, positioning WES to capture stable revenue over commodity cycles.
  • Fee mix — both usage-based and fixed-fee. The Partnership collects fixed and variable fees tied to volumes and thermal content and has been moving material contracts to simplified fixed-fee structures to reduce commodity exposure.
  • Geographic concentration. Operations are concentrated in Texas, New Mexico, Colorado, Utah and Wyoming with a substantial portion of activity in West Texas and the Rockies, concentrating basin-specific operational risk.
  • Service provider role and maturity. WES functions as a midstream service provider with active, contracted relationships focused on gathering, processing, transportation and produced-water handling.
  • Single-counterparty criticality (Occidental). The 2024 disclosures explicitly show Occidental’s production accounted for the majority of throughput and revenue in multiple asset classes, creating a critical concentration risk that is only now being partially mitigated through contractual resets and adding new contracted customers. (Source: WES 2024 Form 10-K.)

Investment implications and near-term watch items

The commercial moves in early 2026 materially alter cash flow sensitivity. Converting cost-of-service and variable contracts to fixed fees reduces exposure to commodity price swings and makes distributions more predictable, but it transfers downside from WES to the producer if volumes fall below expectations. At the same time, the partnership’s deep dependence on Occidental-exposed volumes remains a central valuation risk until revenue diversification is demonstrably advanced. Monitor: (1) realized volumes post-contract conversion, (2) acreage dedication enforcement and deficiency payments, and (3) how new water-related contracts scale post-Aris acquisition.

For an investor-ready summary of counterparties, contract terms and concentration metrics, visit https://nullexposure.com/ to access consolidated relationship intelligence.

Conclusion — what to do with this information

Western Midstream’s contract portfolio and recent renegotiations position the company toward lower cash-flow volatility but leave significant counterparty concentration risk in the near term. Active investors should quantify the pace of diversification away from Occidental-controlled volumes and track throughput trends against newly minted fixed-fee arrangements. For portfolio managers and analysts needing organized, relationship-level sourcing and alerts on WES counterparties, see the full relationship profiles at https://nullexposure.com/.

Key takeaway: WES is transitioning commercial risk from commodity exposure to counterparty and volume assurance risk—this reduces payout volatility but places a premium on contract enforcement and diversification execution.