About Western Midstream Partners, LP

Western Midstream Partners, LP, together with its subsidiaries, acquires, owns, develops, and operates midstream assets. Western Midstream Holdings, LLC serves as the general partner of the company. The company is a subsidiary of Occidental Petroleum Corporation (Occidental). The company engages in gathering, compressing, treating, processing, and transporting natural gas; gathering, stabilizing, and transporting condensate, natural-gas liquids (NGLs), and crude oil; and gathering and disposing produced water. In its capacity as a natural-gas processor, the company also buys and sells natural gas, NGLs, and condensate on behalf of itself and as an agent for its customers under certain contracts. In its capacity as a natural-gas processor, the company also buys and sells natural gas, NGLs, and condensate on behalf of itself and as an agent for its customers under certain contracts. The company’s operations are organized into a single operating segment that engages in gathering, compressing, treating, processing, and transporting natural gas; gathering, stabilizing, and transporting condensate, NGLs, and crude oil; and gathering and disposing of produced water. Assets and Areas of Operation These assets and investments are located in Texas, New Mexico, the Rocky Mountains (Colorado, Utah, and Wyoming), and North-central Pennsylvania. The company’s operations are organized into a single operating segment that engages in gathering, compressing, treating, processing, and transporting natural gas; gathering, stabilizing, and transporting condensate, NGLs, and crude oil; and gathering and disposing of produced water. Acquisitions And Divestitures Cactus II. In November 2022, the company sold its 15.00% interest in Cactus II to two third parties. Ranch Westex. In September 2022, the company acquired the remaining 50% interest in Ranch Westex. Subsequent to the acquisition, the company is the sole owner and operator of the asset, Ranch Westex is no longer accounted for under the equity method of accounting, and the Ranch Westex processing plant is included as part of the operations of the West Texas complex. Properties Gathering, Processing, Treating, and Disposal Texas and New Mexico West Texas and New Mexico West Texas Gathering, Processing, and Treating Complex Customers: For the year ended December 31, 2022, Occidental’s production represented 44% of the West Texas complex throughput, and the largest third-party customer provided 18% of the throughput. Supply: Supply of gas and NGLs for the complex comes from production from the Delaware Sands, Avalon Shale, Bone Spring, Wolfcamp, and Penn formations in the Delaware Basin portion of the Permian Basin. Delivery Points: Gas is dehydrated, compressed, and delivered to the Mi Vida plant and within the West Texas complex for processing, while lean gas is delivered into Enterprise GC, L.P.’s pipeline for ultimate delivery into Energy Transfer LP’s (ET) Oasis pipeline (the Oasis pipeline). Residue gas from the West Texas complex is delivered to the Red Bluff Express pipeline, Whitewater Midstream, LLC’s Agua Blanca pipeline, Oasis pipeline, Transwestern Pipeline Company LLC’s pipeline (Transwestern pipeline), and Kinder Morgan, Inc.’s interstate pipeline system. NGLs production is primarily delivered into the Sand Hills pipeline and Lone Star NGL LLC’s pipeline (Lone Star pipeline). Mentone Train III: The company is constructing a third cryogenic processing train at the Mentone processing plant at the West Texas complex. Mentone Train III will have a capacity of 300 Million cubic feet per day (MMcf/d), and the company expects this train to be completed in the fourth quarter of 2023. Upon completion of Mentone Train III, the West Texas complex will have a total processing capacity of 1,840 MMcf/d. DBM Oil-Gathering System, Treating Facilities, and Storage Customers: As of December 31, 2022, DBM oil system throughput was from Occidental and one third-party producer. For the year ended December 31, 2022, Occidental’s production represented 98% of the total DBM oil system throughput and is subject to the Texas Railroad Commission tariff. Supply: The DBM oil system is supplied from production from the Delaware Basin portion of the Permian Basin. Delivery Points: Crude oil treated at the DBM oil system is delivered into Plains All American Pipeline. DBM Produced-Water Disposal Systems Customers: As of December 31, 2022, DBM water systems throughput was from Occidental and numerous third-party producers, with Occidental’s production representing 80% of the throughput. Supply: Supply of produced water for the systems comes from crude-oil production from the Delaware Basin portion of the Permian Basin. Disposal: The DBM water systems gather and dispose produced water via subsurface injection or offload to third-party service providers. The systems’ injection wells are located in Loving, Reeves, and Ward Counties in Texas. Mi Vida Processing Plant Customers: As of December 31, 2022, Mi Vida plant throughput was from Occidental and one third-party customer. Supply and Delivery Points: The Mi Vida plant receives volumes from the West Texas complex and ET’s gathering system. Residue gas from the Mi Vida plant is delivered to the Oasis pipeline or Transwestern pipeline. NGLs production is delivered to the Lone Star pipeline. East Texas Mont Belvieu JV Fractionation Trains Customers: The Mont Belvieu JV does not contract with customers directly but is allocated volumes from Enterprise Products Partners L.P. (Enterprise) based on the available capacity of the other trains at Enterprise’s NGLs fractionation complex in Mont Belvieu, Texas. Supply and Delivery Points: Enterprise receives volumes at its fractionation complex in Mont Belvieu, Texas via a large number of pipelines, including Skelly-Belvieu Pipeline Company, LLC’s pipeline, TEP’s pipeline, and the Panola pipeline. NGLs are delivered to end users either through customer-owned pipelines that are connected to nearby petrochemical plants or via export terminals. South Texas Brasada Gathering, Stabilization, Treating, and Processing Complex Customers: For the year ended December 31, 2022, Brasada complex throughput was from two third-party customers. Supply: Supply of gas and NGLs is sourced from throughput gathered by the Springfield system. Delivery Points: The facility delivers residue gas to the Eagle Ford Midstream system operated by NET Midstream, LLC. Stabilized condensate is delivered to Plains All American Pipeline, and NGLs are delivered to the Enterprise-operated South Texas NGL Pipeline System. Springfield Gathering System, Stabilization Facility, and Storage Customers: For the year ended December 31, 2022, Springfield system throughput was from multiple third-party customers. Supply: Supply of gas and oil is sourced from third-party production in the Eagle Ford Shale Play. Delivery Points: The gas-gathering system has a delivery point to the company’s Brasada complex and other interruptible points (the Raptor processing plant owned by Carnero G&P LLC and operated by Targa Resources Corp. and the Dos Hermanos plant owned and operated by ET). The oil-gathering system delivers oil to Plains All American Pipeline, Kinder Morgan, Inc.’s Double Eagle Pipeline, Hilcorp Energy Company’s Harvest Pipeline, and NuStar Energy L.P.’s Pipeline. Rocky Mountains - Colorado and Utah Colorado DJ Basin Gathering, Treating, and Processing Complex Customers. For the year ended December 31, 2022, Occidental’s production represented 54% of the DJ Basin complex throughput, and the two largest third-party customers provided 31% of the throughput. Supply. The DJ Basin complex is supplied primarily by the Wattenberg field. Delivery Points: As of December 31, 2022, the DJ Basin complex had various delivery-point interconnections with DCP Midstream LP’s (DCP) gathering and processing system for gas not processed within the DJ Basin complex. The DJ Basin complex is connected to the Colorado Interstate Gas Company LLC’s pipeline (CIG pipeline), Tallgrass Energy’s Cheyenne Connector pipeline, and Xcel Energy’s residue pipelines for natural-gas residue takeaway and to Overland Pass Pipeline Company LLC’s pipeline, FRP’s pipeline, and DCP’s Wattenberg NGL pipeline for NGLs takeaway. In addition, the NGLs fractionators and associated truck-loading facility at the Platte Valley and Wattenberg plants provides access to local NGLs markets. DJ Basin Oil-Gathering System, Stabilization Facility, and Storage Customers: For the year ended December 31, 2022, all of the DJ Basin oil system throughput was from Occidental’s production. Supply: The DJ Basin oil system, which is supplied primarily by the Wattenberg field, gathers high-vapor-pressure crude oil and delivers it to the COSF. The COSF includes two 250,000 barrel crude-oil storage tanks. Delivery Points: The COSF has market access to the White Cliffs pipeline, Saddlehorn pipeline, Tallgrass Energy’s Pony Express pipeline and rail-loading facilities in Tampa, Colorado, and local markets. Utah Chipeta Processing Complex Customers: For the year ended December 31, 2022, Chipeta complex throughput was from numerous third-party customers, with the two largest customers providing 81% of the throughput. Supply: Chipeta’s inlet is connected to Caerus Oil and Gas LLC’s Greater Natural Buttes gathering system, the MountainWest Pipeline, LLC system (MountainWest pipeline), and Three Rivers Gathering, LLC’s system, which is owned by MPLX LP (MPLX). Delivery Points: The Chipeta plant delivers NGLs via the GNB NGL pipeline to Enterprise’s Mid-America Pipeline Company pipeline (MAPL pipeline), which provides transportation through Enterprise’s Seminole pipeline (Seminole pipeline) and TEP’s pipeline in West Texas, and ultimately to the NGLs fractionation and storage facilities in Mont Belvieu, Texas. The Chipeta plant has residue gas delivery points through the CIG pipeline, MountainWest pipeline, and Wyoming Interstate Company’s pipeline (WIC pipeline) that deliver residue gas to markets throughout the Rockies and Western United States. Rocky Mountains – Wyoming Northeast Wyoming Hilight Gathering System and Processing Plant Customers: For the year ended December 31, 2022, gas gathered and processed at the Hilight system was from third-party customers, with the two largest customers providing 55% of the system throughput. Supply: The Hilight system serves the gas-gathering needs of several conventional producing fields in Johnson, Campbell, Natrona, and Converse Counties, Wyoming. Delivery Points: The Hilight plant delivers residue gas to the company’s MIGC transmission line (see Transportation within these Items 1 and 2). Hilight is not connected to an active NGLs pipeline, resulting in all fractionated NGLs being sold locally through truck and rail loading facilities. Southwest Wyoming Granger Gathering and Processing Complex Customers: For the year ended December 31, 2022, Granger complex throughput was from third-party customers, with the two largest customers providing 78% of the throughput. Supply: The Granger complex is supplied by the Moxa Arch and the Jonah and Pinedale Anticline fields. Delivery Points: Residue gas from the Granger complex can be delivered to the following major pipelines: CIG pipeline; Berkshire Hathaway Energy’s Kern River pipeline (Kern River pipeline) via a connect with MPLX’s Rendezvous pipeline (Rendezvous pipeline); MountainWest pipeline; Dominion Energy Overthrust Pipeline; The Williams Companies, Inc.’s Northwest Pipeline (NWPL); Its OTTCO pipeline; and Its Mountain Gas Transportation LLC pipeline. The NGLs have market access to the MAPL pipeline, which terminates at Mont Belvieu, Texas, and other local markets. Red Desert complex Customers: For the year ended December 31, 2022, Red Desert complex throughput was from third-party customers, with the three largest customers providing 48% of the throughput. Supply and Delivery Points: The Red Desert complex gathers and compresses natural gas produced from the eastern portion of the Greater Green River Basin and delivers to a third party for processing. Rendezvous Gathering System Customers: For the year ended December 31, 2022, Rendezvous system throughput primarily was from two shippers that have dedicated acreage to the system. Supply and Delivery Points: The Rendezvous system provides high-pressure gathering service for gas from the Jonah and Pinedale Anticline fields and delivers to the company’s Granger plant and MPLX’s Blacks Fork gas-processing plant, which connects to the MountainWest pipeline, NWPL, and the Kern River pipeline via the Rendezvous pipeline. North-Central Pennsylvania Marcellus Gathering Systems Customers: As of December 31, 2022, the Marcellus Interest gathering systems had two priority shippers. The largest producer provided approximately 88% of the throughput for the year ended December 31, 2022. Capacity not used by priority shippers is available to other third parties as determined by the operating partner, a subsidiary of EQT Corporation. Supply and Delivery Points: The Marcellus Interest gathering systems have access to Transcontinental Gas Pipe Line Company, LLC’s pipeline. Transportation Rocky Mountains - Colorado White Cliffs pipeline Customers: The White Cliffs dual pipeline system had multiple committed shippers, including Occidental, as of December 31, 2022. Other parties may also ship on the White Cliffs pipeline at FERC-based rates. The White Cliffs dual-pipeline system provides crude-oil and NGL takeaway capacity from Platteville, Colorado, to Cushing, Oklahoma. Supply: The White Cliffs pipeline is supplied by production from the DJ Basin. At the point of origin, there is a storage facility adjacent to a truck-unloading facility. Delivery Points: The White Cliffs pipeline delivery point is ET’s storage facility in Cushing, Oklahoma, which ultimately delivers to Gulf Coast and mid-continent refineries. Saddlehorn Pipeline Customers: The Saddlehorn pipeline had multiple committed shippers, including Occidental, as of December 31, 2022. Other parties may also ship on the Saddlehorn pipeline at FERC-based rates. Supply: The Saddlehorn pipeline has multiple origin points including: Cheyenne, Wyoming; Ft. Laramie, Wyoming; Carr, Colorado; and Platteville, Colorado. Saddlehorn is supplied by the DJ Basin and basins that connect to a Wyoming access point. Delivery Points: The Saddlehorn pipeline delivers crude oil and condensate to storage facilities in Cushing, Oklahoma. Rocky Mountains - Utah GNB NGL Pipeline Customers: There were four primary shippers on the GNB NGL pipeline as of December 31, 2022. The GNB NGL pipeline provides capacity at the posted FERC-based rates. Supply: The GNB NGL pipeline has the ability to receive NGLs from Chipeta’s gas-processing facility and MPLX’s Stagecoach/Iron Horse gas-processing complex. Delivery Points: The GNB NGL pipeline delivers NGLs to the MAPL pipeline, which provides transportation through the Seminole pipeline and TEP’s pipeline, and ultimately to NGLs fractionation and storage facilities in Mont Belvieu, Texas. Rocky Mountains - Wyoming MIGC transportation system Customers: For the year ended December 31, 2022, throughput on the MIGC system was from numerous third-party customers, with the three largest customers providing 81% of the system throughput. All parties on the MIGC system ship pursuant to a tariff on file with FERC. Supply: MIGC receives gas from the Hilight system, Evolution Midstream’s Jewell plant, and from WBI Energy Transmission, Inc. Delivery Points: MIGC volumes can be redelivered to the hub in Glenrock, Wyoming, which has access to interstate pipelines, including the CIG pipeline, Tallgrass Interstate Gas Transmission pipeline, and WIC pipeline. Volumes can also be delivered to Black Hills Corporation’s Cheyenne Light Fuel & Power and several industrial users. OTTCO Transportation System Customers: For the year ended December 31, 2022, throughput on the OTTCO transportation system was from numerous third-party shippers. Revenues on the OTTCO transportation system are generated from contracts that contain minimum-volume commitments and volumetric fees paid by shippers under firm and interruptible gas-transportation agreements. Supply and Delivery Points: Supply points to the OTTCO transportation system include approximately 30 active wellheads, the Granger complex, and ExxonMobil Corporation’s Shute Creek plant, which are supplied by the eastern portion of the Greater Green River Basin, the Moxa Arch, and the Jonah and Pinedale Anticline fields. Primary delivery points include the Red Desert complex, two third-party industrial facilities, and an inactive interconnection with the Kern River pipeline. Wamsutter Pipeline Customers: For the year ended December 31, 2022, 96% of the Wamsutter pipeline throughput was from one third-party shipper. Revenues on the Wamsutter pipeline are generated from tariff-based rates regulated by the Wyoming Public Service Commission. Supply and Delivery Points: The Wamsutter pipeline has active receipt points in Sweetwater County, Wyoming, and delivers crude oil to MPLX LP’s SLC Core Pipeline System. Texas TEFR Interests Front Range Pipeline: FRP provides NGLs takeaway capacity from the DJ Basin in Northeast Colorado. FRP has receipt points at gas plants in Weld and Adams Counties, Colorado (including the DJ Basin complex). FRP connects to TEP near Skellytown, Texas. As of December 31, 2022, FRP had multiple committed shippers, including Occidental. FRP provides capacity to other shippers at the posted FERC tariff rate. Texas Express Gathering: TEG consists of two NGLs gathering systems that provide plants in North Texas and the Texas panhandle with access to NGLs takeaway capacity on TEP. TEG had one committed shipper as of December 31, 2022. Texas Express Pipeline: TEP delivers to Enterprise’s NGL fractionation and storage facility in Mont Belvieu, Texas. TEP is supplied with NGLs from other pipelines or systems, including FRP, the MAPL pipeline, and TEG. As of December 31, 2022, TEP had multiple committed shippers, including Occidental. TEP provides capacity to other shippers at the posted FERC tariff rates. Whitethorn Supply and Delivery Points: Whitethorn is supplied by production from the Permian Basin. Whitethorn transports crude oil and condensate from Enterprise’s Midland terminal to Enterprise’s Sealy terminal and connects with Enterprise’s Rancho II pipeline in Sealy to deliver into ECHO storage and greater Houston market. Shippers have access to refineries in Houston, Texas City, Beaumont, and Port Arthur, Texas, and Enterprise’s crude-oil export facilities. Panola Pipeline Supply and Delivery Points: The Panola pipeline transports NGLs from Panola County, Texas, to Mont Belvieu, Texas. As of December 31, 2022, the Panola pipeline had multiple committed shippers. The Panola pipeline provides capacity to other shippers at the posted FERC-based rates. Red Bluff Express Pipeline Customers: As of December 31, 2022, the Red Bluff Express pipeline had multiple committed shippers, including Occidental. The Red Bluff Express pipeline also provides capacity to other shippers at the posted FERC-based rates. In December 2020, the company entered into a five-year transportation contract, which became effective on January 1, 2021, with a volume commitment on the Red Bluff Express pipeline. Supply and Delivery Points: The Red Bluff Express pipeline is supplied by production from the company’s West Texas complex and other third-party plants. The Red Bluff Express pipeline transports natural gas from Reeves and Loving Counties, Texas, to the WAHA hub in Pecos County, Texas. Strategy The company intends to grow certain of its systems organically over time by meeting its customers’ midstream service needs that arise from drilling activity in its areas of operation. The company continually pursues economically attractive organic business development and expansion opportunities in existing or new areas of operation that allow it to leverage its infrastructure, operating expertise, and customer relationships, to meet new or increased demand of its services. Regulation of Operations Many of the pipelines the company uses to gather and transport oil, natural gas, and NGLs are subject to regulation by the Pipeline and Hazardous Materials Safety Administration (PHMSA), an agency under the U.S. Department of Transportation, pursuant to the Natural Gas Pipeline Safety Act of 1968, as amended (the NGPSA), with respect to natural gas, and the Hazardous Liquids Pipeline Safety Act of 1979, as amended (the HLPSA), with respect to NGLs and oil. The operations of the company’s MIGC pipeline and the Ramsey Residue Lines are subject to regulation by FERC under the Natural Gas Act of 1938 (the NGA). Under the NGA, FERC has authority to regulate natural-gas companies that provide natural-gas pipeline-transportation services in interstate commerce. The company’s GNB NGL (GNB NGL Pipeline LLC) pipeline provides interstate service as a FERC-regulated common carrier under the Interstate Commerce Act, the Energy Policy Act of 1992, and related rules and orders. The company also owns interests in FRP, TEP, Saddlehorn, Panola (Panola Pipeline Company, LLC), Cactus II, and White Cliffs, each of which provides interstate services as a FERC-regulated common carrier under the same statues and regulations. The company owns an interest in Red Bluff Express, which offers natural-gas transportation services under Section 311 of the Natural Gas Policy Act of 1978. Environmental Matters and Occupational Health and Safety Regulations The company’s business operations are subject to numerous federal, regional, state, tribal, and local environmental and occupational health and safety laws and regulations. The more significant of these existing environmental laws and regulations include the following legal standards that exist in the United States, as amended from time to time: The Clean Air Act, which restricts the emission of air pollutants from many sources and imposes various pre-construction, operational, monitoring, and reporting requirements, and that the U.S. Environmental Protection Agency (the EPA) has relied on as the authority for adopting climate-change regulatory initiatives relating to greenhouse gas (GHG) emissions; The Federal Water Pollution Control Act, also known as the Clean Water Act, which regulates discharges of pollutants from facilities to state and federal waters and establishes the extent to which waterways are subject to federal jurisdiction and rulemaking as protected waters of the United States; The Oil Pollution Act of 1990, which subjects, among others, owners and operators of onshore facilities and pipelines to liability for removal costs and damages arising from an oil spill in waters of the United States; Regulations imposed by the Bureau of Land Management (the BLM) and the Bureau of Indian Affairs, agencies under the authority of the U.S. Department of the Interior, which govern and restrict aspects of oil and natural-gas operations on federal and Native American lands, including the imposition of liabilities for pollution damages and pollution clean-up costs resulting from such operations; The Comprehensive Environmental Response, Compensation and Liability Act of 1980, which imposes liability on generators, transporters, and arrangers of hazardous substances at sites where hazardous substance releases have occurred or are threatening to occur; The Resource Conservation and Recovery Act, which governs the generation, treatment, storage, transport, and disposal of solid wastes, including hazardous wastes; The Safe Drinking Water Act, which regulates the quality of the nation’s public drinking water through adoption of drinking-water standards and control over the injection of waste fluids into non-producing geologic formations that may adversely affect drinking water sources; The Emergency Planning and Community Right-to-Know Act, which requires facilities to implement a safety-hazard communication program and disseminate information to employees, local emergency planning committees, and response departments on toxic chemical uses and inventories; The Occupational Safety and Health Act, which establishes workplace standards for the protection of the health and safety of employees, including the implementation of hazard communications programs designed to inform employees about hazardous substances in the workplace, potentially harmful effects of these substances, and appropriate control measures; The Endangered Species Act, which restricts activities that may affect federally identified endangered and threatened species or their habitats through the implementation of operating restrictions or a temporary, seasonal, or permanent ban in affected areas; The National Environmental Policy Act, which requires federal agencies to evaluate major agency actions having the potential to impact the environment and that may require the preparation of environmental assessments and more detailed environmental impact statements that may be made available for public review and comment; and The U.S. Department of Transportation regulations, which relate to advancing the safe transportation of hazardous materials, pipeline safety, and emergency response preparedness. History The company was founded in 2007. It was incorporated in 2007. The company was formerly known as Western Gas Equity Partners, LP and changed its name to Western Midstream Partners, LP in 2019.