CNOOC Ltd.

Revenue is recognized when crude oil and natural gas are delivered and the customer takes control, with payment due shortly after. Oil is priced against international benchmarks, while gas is priced under negotiated long-term agreements that are periodically reviewed. Most billed revenue passes through its own trading and marketing subsidiaries rather than being booked directly by the exploration and production business, and most of it is earned from customers inside China, including its own state parent and that parent's affiliates.

Several sets of ratios line up in the higher part of their range against peers at the same time: cash relative to debt, free cash flow relative to assets, equity and total obligations, and margins measured from the gross level through to the net level. Structurally, that combination describes a company generating more cash than a typical peer running the same kind of extraction business, relative to its size, and holding that cash rather than carrying it as debt. In a business bound by replacing what it extracts, CompanyGraph reads that cash and margin position as capacity available to fund new offshore developments and reserve replacement, not as a statement about how quickly the company is growing today.

Its own account names its state parent and that parent's affiliates as suppliers of exploration, development, production and ancillary services, including leased production vessels, so it depends operationally on companies inside its own controlling group. It also discloses that some major producing assets are joint ventures it does not control, and it names concentrated supplier relationships, dependence on replacing extracted reserves, and gaps in technology it holds in-house as risks to its own growth.

Its own filings name a concentrated set of large buyers, including its own state parent, alongside other named customers in state-linked energy, chemical and power sectors. It states that sales to its parent and that parent's associates together make up a majority of its revenue. Separately, its overseas joint-venture partners depend on its own trading and marketing subsidiaries to sell the share of output that belongs to them, since it markets that output alongside its own.

This kind of production business, built on a depleting resource base, is a common structural shape: CompanyGraph places many other companies in the same category, so scale or sector alone is not distinctive. Its own filings point to something narrower: the legal right to sign new offshore production-sharing contracts with foreign partners inside China belongs to its state parent under Chinese law, and is only passed down to this company afterward. That right is fixed by statute to one company group, not a capability a competitor could build through its own effort.

For natural gas and liquefied natural gas, its own account states that sales generally run under long-term contracts that include periodic price-review mechanisms, rather than one-off spot sales, which is itself a form of commitment on the buyer's side. It does not disclose contract durations, termination terms or backlog figures, so how binding that commitment is in practice cannot be judged from what is on file. Crude oil sales, by contrast, are described as priced against international benchmarks, a commodity pricing mechanism that is not described as carrying a comparable lock-in feature.

A common pattern for companies extracting a resource that does not replenish itself is that their scale is ultimately capped by how much of what they take out they can replace, at a cost below what the replacement is worth. That pattern is treated here as a starting assumption, not something CompanyGraph has measured directly for this company. Its own filings point the same direction and add specifics: they name dependence on developable reserves, competition for new exploration rights and gaps in core technology as constraints on growth, and separately name limited transport and export infrastructure in one region as a physical cap on how much of its production capacity it can bring to market.

Its own risk disclosures and dependency statements point to a small number of named pressures rather than one single mechanism. A controlling parent sits on multiple sides of the relationship at once, as the legal gatekeeper for new offshore contracts under Chinese law, a major supplier of operational services, and the source of most of its revenue as a customer. It also names joint ventures where it holds equity but not control, and a minority stake in a Russian gas project already affected by international sanctions, alongside a stated possibility that sanctions changes could reach the company itself, its affiliates, its partners or the countries where it operates.

Its own risk disclosures put macroeconomic and government policy risk first, ahead of international political change, industry and energy policy shifts, climate and environmental policy, and swings in oil and gas prices. It separately names sanctions as a live pressure: a minority stake in a Russian gas project has already been affected by sanctions tied to the Russia-Ukraine conflict, and it flags a further possibility that changes in United States sanctions could affect the company, its affiliates, its partners or the countries where it operates. Underneath those named pressures sits a more general one common to any business built on extracting a resource that runs out: what it can sell at has to stay above the cost of finding and extracting whatever replaces it.