Occidental Petroleum Corp /DE/ (OXY)

Occidental Petroleum is one of the largest integrated oil and gas companies in the United States by production volume and reserves. It drills for and produces crude oil and natural gas, operates pipelines and processing facilities, and increasingly invests in carbon capture and storage technology as a hedge against energy transition risk. The company is a descendant of the original Occidental Petroleum founded in 1920, which spent much of its history as a diversified chemical conglomerate before returning to its roots as a pure-play energy company in recent decades. Historically volatile, dependent on commodity prices, and at the centre of debates about fossil-fuel capital allocation in a climate-conscious world, Occidental embodies the strategic tensions facing legacy energy firms.

The early era and the rise of chemical integration

Occidental Petroleum was founded in 1920 by chemist Wyatt Sexton to explore for oil in Southern California. The original venture struck oil and natural gas, but the company’s defining figure arrived in 1957 when Armand Hammer, an American businessman with ties to the Soviet Union, took control. Hammer transformed Occidental from a small regional oil company into a diversified energy and chemicals conglomerate. Through aggressive acquisition and bold bets on unconventional deposits — particularly the heavy oil of California and later operations in the Middle East — Hammer built Occidental into a global enterprise spanning petroleum, natural gas, chemical production, and minerals.

By the 1980s and 1990s, Occidental was a massive, sprawling conglomerate with chemical plants, mines, and energy operations across the world. The chemical division supplied industrial feedstocks, plastics precursors, and specialty chemicals. The energy division drilled in California, the Middle East, and elsewhere. The model was a diversified industrial firm, buffeted by commodity prices but with chemical operations providing some stability and recurring revenue. This model worked through the 1990s and into the 2000s, but the energy transition, the shale revolution, and changing capital-allocation pressures on oil companies were reshaping the industry.

The transition to a pure-play energy company

In the late 2000s and 2010s, Occidental gradually shed its chemical and non-core operations, divesting businesses and assets to focus on upstream oil and gas production. The company sold off major chemical divisions, mines, and peripheral operations. The pivot was driven by several forces: activist investors and analysts increasingly pressed integrated conglomerates to pick a lane rather than juggle multiple industries with different capital requirements and risk profiles; the shale boom in the United States created high-margin opportunities for companies focused on oil and gas production rather than chemicals; and the renewable-energy transition made it harder to justify long-lived chemical facilities that required significant capital reinvestment.

By the late 2010s, Occidental had largely completed the transformation into a pure-play oil and gas company. The remaining chemical and specialty operations were small and eventually divested entirely. What remained was upstream production, midstream assets (pipelines and processing facilities), and financial exposure to crude and natural gas prices. The company’s major producing regions shifted to focus on the Permian Basin in Texas and New Mexico (one of the most prolific shale oil regions), Middle Eastern operations, and some legacy fields in California.

The Berkshire Hathaway investment and operational focus

In 2019, Occidental attempted to acquire Anadarko Petroleum, a major independent oil producer, in an all-stock deal that would have made Occidental a top-five global oil and gas company. The acquisition faced regulatory and shareholder scrutiny, but Occidental’s determination to close it caught the attention of Warren Buffett, whose Berkshire Hathaway fund is one of the largest asset pools in the world. Berkshire stepped in with a massive preferred investment, providing capital to ensure the Anadarko deal closed and giving Berkshire a significant equity stake in Occidental.

That investment, and Berkshire’s subsequent stake-building through share purchases, made Occidental visible to a much broader investor base and tied the company’s governance and strategic thinking to Berkshire’s approach: focus on cash generation, avoid overpaying for acquisitions, maintain financial discipline. The company’s management has since emphasized cash return to shareholders through dividends and buybacks, a posture aligned with Berkshire’s capital allocation philosophy and markedly different from the growth-at-all-costs mentality that characterized earlier energy booms.

Production, reserves, and commodity exposure

Occidental’s earnings are almost entirely determined by two things: the volume of oil and gas it produces and the prices at which oil and gas trade. The company is a major producer — tens of millions of barrels per year — with decades of proved reserves in the ground, primarily in the Permian Basin and other unconventional shale plays. The Permian is one of the world’s lowest-cost oil-production regions, giving Occidental scale advantages and decent margins even when oil prices are moderate.

The company’s reserves base is crucial to its value. Public oil and gas companies are valued partly on the basis of their proved and probable reserves — the oil and gas they expect to recover from existing fields, often measured in barrels of oil equivalent. When commodity prices rise, those reserves appear more valuable; when prices fall, reserve values decline. This creates a volatile environment for company valuations, independent of operational performance or capital discipline.

Occidental also operates midstream assets — pipelines and processing facilities — that earn recurring, relatively stable cash flow by moving oil and gas from wellhead to market. These assets are less volatile than production because they are compensated on a fixed-fee basis rather than commodity exposure, making them attractive to long-term investors seeking steadier cash flows.

The pivot to low-carbon energy

Increasingly, Occidental has begun investing in carbon capture and storage (CCS) technology, planting itself as a potential player in what might become a large energy industry if carbon pricing or regulatory mandates force companies to remove CO2 from the atmosphere. The company has launched or acquired CCS projects, invested in direct-air capture technology, and positioned itself as a participant in the emerging carbon-removal market.

This pivot is a deliberate hedge. Legacy oil and gas companies face the reality that some of the capital they deployed for decades may become stranded if the energy transition accelerates or if regulatory policy makes fossil fuels uneconomical faster than expected. By investing in CCS and low-carbon energy, Occidental and peers are betting that they can apply their capital, engineering, and operations expertise to new energy problems — becoming not oil-and-gas companies that are forced to sunset, but energy companies that pivot.

The financial and strategic viability of this pivot remains uncertain. Carbon capture is capital-intensive, depends on permanent regulatory or contractual incentives to be profitable, and faces technological challenges around scale and cost. For now, it is a small part of Occidental’s business, but it signals the company’s awareness that the decades-long era of pure fossil-fuel production may have limits.

Pressures, dependencies, and the volatility problem

Occidental’s earnings and share price are highly volatile, driven by crude oil and natural gas prices, which fluctuate based on global supply, demand, geopolitical events, and expectations about energy transition. The company has little control over these prices; it can only manage costs and capital discipline to maximize profit when prices are high and defend margins when they are low. That structural exposure means Occidental shares are inherently cyclical and risky for investors with low volatility tolerance.

The company also faces long-term demand uncertainty. As the world’s economies invest in renewables, electric vehicles, and energy efficiency, demand for petroleum and natural gas may peak and decline, eroding the long-term value of Occidental’s reserves and production infrastructure. That risk is not immediate — oil and gas remain essential to modern economies — but it is real over decades, which is why Occidental’s pivot toward carbon capture matters as a risk-mitigation strategy.

Geopolitical exposure is significant. Some of Occidental’s oil production operates in the Middle East, where political instability, wars, and sanctions can disrupt supply and operations.

How to research Occidental

Occidental’s annual 10-K filing (SEC CIK 0000797468) is the essential document. It details reserves, production volumes by region and asset, current commodity price assumptions used for valuation, and capital allocation plans. Quarterly earnings calls are valuable for tracking production trends, any changes in reserve estimates, and management commentary on capital discipline and shareholder returns.

Key metrics to watch: production growth or decline, reserve replacement (whether the company is finding and developing new reserves faster than it depletes existing ones), cash flow generation at different commodity price points, and the trajectory of capex spending on core oil-and-gas assets versus low-carbon initiatives. The ratio of reserves to annual production (often called reserve life or reserve replacement ratio) indicates how long the company can operate at current production rates before reserves run out.

Occidental’s shares trade at prices set by market forces; nothing here is a recommendation to buy or sell — only a map of a company in transition, dependent on commodity prices, and hedging its long-term viability through investment in new energy technologies.