Oil and Gas Procurement: How Buyers Source Crude Oil and Petroleum Products

Oil and gas procurement is the structured process of identifying, evaluating, purchasing, and coordinating the supply of crude oil and petroleum products from qualified suppliers, refineries, producers, exporters, traders, and other legitimate supply channels.

For international buyers, oil and gas procurement involves considerably more than finding a seller and negotiating a price. Buyers must evaluate product specifications, available volumes, supplier authority, refinery or supply-source information, allocation, documentation, inspection requirements, delivery terms, logistics, and payment conditions before a transaction can move toward execution.

The petroleum market covers a broad range of commodities, including crude oil, gasoline, diesel, jet fuel, fuel oil, LPG and other liquid fuels. The U.S. Energy Information Administration (EIA), for example, tracks production, imports, exports, refining, inventories, prices, and consumption across major petroleum products.

A structured procurement process helps buyers determine whether a proposed supply can realistically satisfy their commercial, technical, logistical, and contractual requirements.

What Is Oil and Gas Procurement?

Oil and gas procurement covers the commercial activities involved in sourcing energy commodities for refineries, distributors, traders, industrial users, governments, airlines, storage operators, and other qualified buyers.

Depending on the buyer’s requirement, procurement may involve:

• Crude oil
• EN590 diesel
• Jet Fuel A1
• Gasoline
• Fuel oil
• LPG
• LNG
• Other refined petroleum products

The requirement may be for a single spot cargo, a trial shipment, or recurring monthly supply under a longer-term contract.

For large-volume transactions, buyers normally need to establish the required product, specification, quantity, delivery location, preferred Incoterm, contract duration, inspection requirements, and payment structure before requesting a formal commercial offer.

This distinction matters because oil and gas procurement is not simply purchasing a commodity. It is the process of coordinating the commercial and physical requirements needed to move that commodity from a credible supply source to the buyer.

Oil and Gas Procurement Process

The oil and gas procurement process varies according to the product, supplier, jurisdiction, transaction structure, and buyer’s requirements. However, international petroleum transactions commonly involve several connected stages.

1. Define the Petroleum Requirement

The first step is to establish exactly what the buyer needs.

A procurement request should normally identify:

• Product and grade
• Required specification
• Trial quantity
• Monthly quantity
• Contract duration
• Loading or delivery location
• FOB or CIF preference
• Target delivery schedule
• Inspection requirements
• Required documentation

For example, a buyer sourcing EN590 diesel may require a defined monthly quantity for 12 months, while a refinery purchasing crude oil may require a particular crude grade compatible with its processing configuration.

A clearly defined requirement allows a supplier or trading desk to determine whether the requested supply can realistically be matched.

For buyers specifically sourcing crude, GPA’s Crude Oil Supply & Trading service provides a more focused pathway for evaluating crude supply and trading requirements.

2. Identify Suitable Supply Channels

Once the requirement is established, the buyer needs to identify suitable supply channels.

These may include:

• Refineries
• Producers
• Refinery-linked suppliers
• Authorized mandates
• Petroleum trading companies
• Exporters
• Storage and terminal operators
• Established commodity supply channels

The objective is not simply to locate the lowest-priced offer.

The buyer needs to establish whether the proposed supplier has a credible commercial role and whether the offered product and volume can be supported.

This becomes particularly important when transactions involve refinery allocations, export cargoes, large monthly quantities, or long-term supply arrangements.

Supplier and Refinery Verification

Supplier verification is one of the most important stages of oil and gas procurement.

Before progressing with a transaction, buyers should evaluate the legal identity and commercial role of the party offering the product.

Depending on the transaction, due diligence may include reviewing:

• Company registration information
• Supplier or mandate documentation
• Product source
• Refinery or producer relationship
• Export capability
• Commercial documentation
• Loading arrangements
• Inspection procedures
• Banking and payment arrangements

A party claiming to represent a refinery or producer should not automatically be treated as the refinery, producer, or authorized seller.

The buyer should establish who is actually offering the commodity, what role that party has in the transaction, and whether the proposed supply chain is consistent with the commercial documents.

This is particularly important for large-volume petroleum procurement where an apparently attractive offer can create significant financial exposure if the supply chain cannot be verified.

Refinery Allocation and Petroleum Procurement

Refinery allocation can form an important part of petroleum procurement when buyers source refined products through refinery-linked supply channels.

An allocation may indicate that a particular quantity has been designated for a buyer, market, contract, or transaction period.

However, an allocation should not automatically be treated as proof that a physical cargo has already been loaded or is immediately ready for shipment.

Buyers should distinguish between:

• Production capacity
• Planned production
• Export availability
• Allocated volume
• Contracted volume
• Physical inventory
• Cargo readiness
• Loading window
• Actual loading

The distinction is important because supply can depend on production schedules, terminal capacity, storage availability, inspection, export procedures, vessel scheduling, and loading windows.

GPA’s guide on how refinery allocation influences EN590 diesel supply and procurement provides a more detailed explanation of the relationship between allocation and physical supply.

The wider principle is simple: commercial allocation and physical cargo availability are related, but they are not necessarily the same thing.

Crude Oil Procurement

Crude oil procurement requires additional technical and commercial evaluation because crude grades differ in characteristics that can affect refinery processing and economics.

Buyers may evaluate:

• API gravity
• Sulfur content
• Crude grade
• Origin
• Refinery compatibility
• Available quantity
• Loading location
• Pricing benchmark
• Delivery terms
• Inspection requirements

A refinery purchasing crude oil cannot necessarily select supply based only on the headline price.

The crude must also be compatible with the refinery’s processing configuration, transportation arrangements, storage capacity, and expected production requirements.

For buyers looking specifically at the crude procurement process, GPA’s Crude Oil Procurement Guide for International Buyers covers the purchasing process in greater detail.

GPA also provides a dedicated Crude Oil supply channel for buyers whose requirements have already been defined.

Refined Petroleum Product Procurement

Refined-product procurement follows the same broad procurement principles but requires product-specific specifications.

For example, a buyer sourcing EN590 diesel may need to establish:

• EN590 compliance
• Sulfur level
• Quantity
• Loading location
• Inspection requirements
• Pricing basis
• FOB or CIF terms
• Loading schedule

GPA’s EN590 Diesel Supply & Procurement page provides a dedicated route for buyers evaluating EN590 supply requirements.

A Jet Fuel A1 transaction requires a different technical and commercial assessment because aviation fuel has its own quality and handling requirements. Buyers evaluating aviation fuel supply can review GPA’s Jet Fuel A1 supply information.

The key principle is that petroleum procurement should begin with a specific product and specification, rather than a generic request for fuel.

RFQ, ICPO and Petroleum Procurement Documentation

Documentation plays a central role in international oil and gas procurement.

Depending on the transaction structure, buyers and sellers may exchange documents such as:

• Request for Quotation (RFQ)
• Buyer company profile
• Letter of Intent (LOI)
• Irrevocable Corporate Purchase Order (ICPO)
• Soft Corporate Offer (SCO)
• Full Corporate Offer (FCO)
• Commercial invoice
• Sales and Purchase Agreement (SPA)
• Inspection documentation
• Cargo documentation
• Export documentation

The exact documents required depend on the transaction and the parties involved.

Buyers should also avoid treating a document by itself as proof that the underlying commodity exists.

Commercial documents should be evaluated together with supplier authority, product source, transaction structure, loading arrangements, and verification procedures.

A credible procurement process therefore combines document review with commercial and supply verification.

FOB vs CIF in Oil and Gas Procurement

Delivery terms can significantly affect the buyer’s responsibilities and total transaction cost.

Under FOB, the seller’s contractual responsibilities generally extend to the agreed delivery point at the loading location, while the buyer assumes the subsequent responsibilities specified by the contract.

Under CIF, the seller generally arranges cost, insurance, and freight to the named destination, subject to the specific contractual terms.

For petroleum buyers, the choice between FOB and CIF can affect:

• Freight responsibility
• Shipping arrangements
• Insurance
• Port requirements
• Delivery risk
• Total landed cost
• Scheduling

The appropriate structure depends on the buyer’s logistics capabilities, destination, cargo requirements, and commercial objectives.

Storage, Terminals and Loading Locations

Storage and terminal infrastructure can influence petroleum procurement decisions because the physical supply chain must support the proposed loading or delivery schedule.

Relevant considerations can include:

• Storage availability
• Terminal location
• Loading facilities
• Product handling capability
• Tank capacity
• Pipeline connectivity
• Vessel access
• Inspection arrangements
• Loading windows

Major petroleum trading and storage hubs can therefore form an important part of international procurement.

For buyers and traders requiring dedicated petroleum storage, GPA’s Tank Farm Storage service provides a separate resource covering storage requirements and supply-chain considerations.

The EIA also publishes petroleum data covering refinery, bulk-terminal and storage inventories, demonstrating the importance of storage and physical infrastructure within petroleum supply chains.

How Buyers Can Reduce Procurement Risk

International petroleum procurement involves financial and operational exposure, particularly when transactions involve large quantities or long-term contracts.

Buyers should establish a verification process before making significant commitments.

Verify the Supplier

Confirm the legal identity and commercial role of the party offering the product.

Verify the Product

Confirm the product name, grade, specification, quantity, and origin or supply source where applicable.

Verify the Allocation

If an allocation is presented, establish what the allocation represents and whether its supporting information is consistent with the proposed transaction.

Verify the Loading Location

The stated refinery, terminal, storage facility, or port should correspond with the proposed transaction and delivery terms.

Review the Documentation

Commercial documents should be internally consistent. Differences in seller identity, quantity, product specification, loading location, dates, or transaction terms should be clarified.

Review Inspection Requirements

Independent inspection may be required to establish product quantity and quality before or during loading, depending on the contract.

Understand Payment Terms

Payment conditions should be understood before contractual commitments are made.

Buyers should be particularly careful when a transaction involves unusual upfront payment demands without adequate contractual protection or sufficient verification.

Common Oil and Gas Procurement Risks

Several risks can arise during international petroleum procurement.

Unverified Suppliers

A party may present itself as a refinery mandate, seller, or authorized representative without sufficient evidence supporting that role.

Unclear Product Source

An offer may not clearly establish where the product originates or how the proposed volume will be supplied.

Allocation Confusion

An allocation document may be presented as though it represents an immediately available physical cargo when the actual loading position still depends on production, storage, inspection, or terminal scheduling.

Inconsistent Documentation

Quantities, seller names, loading ports, specifications, dates, or contractual information may differ between documents.

Unrealistic Pricing

An unusually large discount against relevant market references may justify additional commercial verification.

Unclear Logistics

A transaction may appear commercially attractive but lack a credible loading window, terminal arrangement, vessel plan, or delivery structure.

Pressure to Proceed

Buyers should be cautious when pressured to make financial commitments before basic supply and commercial verification has been completed.

What Buyers Should Prepare Before Approaching a Supplier

A serious procurement enquiry should contain enough information for a supplier or trading desk to determine whether the requirement can be supported.

At minimum, buyers should be prepared to provide:

• Company name
• Buyer type
• Product required
• Required specification
• Trial quantity
• Monthly quantity
• Contract duration
• Destination or loading preference
• FOB or CIF requirement
• Target delivery schedule
• Required documentation
• Buyer contact information

For larger transactions, the buyer may also need to complete KYC and compliance procedures before receiving allocation or contractual documentation.

A well-prepared requirement reduces unnecessary back-and-forth and allows the supply side to determine whether the requested product and volume can be matched.

Oil and Gas Procurement and Market Intelligence

Procurement decisions are also influenced by changes in production, inventories, refining activity, imports, exports, transportation and market demand.

The EIA maintains data covering crude oil and petroleum products across supply, disposition, inventories, imports, exports, refining and consumption.

The International Energy Agency (IEA) also monitors global oil supply, demand, refining activity and disruptions affecting international oil markets. Its August 2026 Oil Market Report, for example, discusses changes in global supply, demand, refining margins and product-market conditions.

For procurement teams, this type of market intelligence can help provide context around availability, pricing conditions, refinery activity and potential supply-chain constraints.

However, market information should complement — not replace — direct verification of the specific supply being offered.

Oil and Gas Procurement for International Buyers

International oil and gas procurement requires coordination between commercial, technical, compliance, logistics, financial, and operational considerations.

A buyer may identify a suitable petroleum product but still need to resolve questions concerning:

• Supply source
• Supplier authority
• Product specification
• Allocation
• Physical availability
• Inspection
• Storage
• Loading
• Freight
• Documentation
• Payment
• Contractual obligations

This is why structured procurement becomes particularly important for bulk petroleum transactions.

The objective is not simply to locate a seller.

The objective is to establish a credible supply pathway from the source through the commercial transaction and ultimately to physical delivery.

How Global Petroleum Advisors Supports Oil and Gas Procurement

Global Petroleum Advisors supports international petroleum procurement and supply coordination for qualified commercial buyers.

The company works across crude oil and refined petroleum products, including EN590 diesel, Jet Fuel A1, gasoline, fuel oil, and other petroleum supply requirements.

Procurement support can include:

• Petroleum supply sourcing
• Refinery-linked supply coordination
• Supplier and mandate verification
• Allocation review
• Commercial supply coordination
• Cargo and transaction documentation
• FOB and CIF supply structures
• Logistics coordination
• International buyer support

For buyers with a defined requirement, the procurement process can begin by establishing the product, quantity, specification, preferred loading or destination location, and delivery terms.

Final Considerations

Oil and gas procurement is a structured commercial process rather than a simple search for the lowest petroleum price.

Successful procurement requires buyers to evaluate the product, supplier, supply source, allocation, documentation, logistics, inspection, contractual terms, and delivery structure before proceeding.

Whether the requirement involves crude oil, EN590 diesel, Jet Fuel A1, gasoline, fuel oil, or another petroleum product, a disciplined procurement process can help buyers identify credible supply opportunities while reducing avoidable transaction and execution risks.

For international buyers seeking structured petroleum supply channels, the next step is to define the product requirement, required volume, delivery terms, and preferred loading or destination location before approaching a qualified supply channel.

 

Internal Linking Resources

Crude Oil Procurement Guide for International Buyers

How Refinery Allocation Influences EN590 Diesel Supply and Procurement

How to Buy Jet Fuel A1 in Bulk