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

A crude oil purchase contract sets out the commercial terms agreed between a buyer and seller for the purchase and delivery of crude oil. It defines the product, quantity, price, delivery conditions, payment terms, inspection requirements, documentation, and responsibilities of each party.

For international crude oil transactions, the contract should clearly reflect the actual supply arrangement and the agreed commercial structure.

What Is a Crude Oil Purchase Contract?

A crude oil purchase contract is the formal agreement governing a crude oil transaction between the contracting parties.

It establishes what is being purchased, how much crude oil will be supplied, how the price is determined, where delivery takes place, and when risk and responsibility transfer from one party to the other.

A properly structured contract reduces uncertainty and gives both the buyer and seller a clear framework for performing the transaction.

Key Terms in a Crude Oil Purchase Contract

1. Crude Oil Grade and Specification

The contract should clearly identify the crude being purchased.

This can include:

• Crude grade
• Country or field of origin
• API gravity
• Sulfur content
• Other relevant quality characteristics
• Applicable crude assay

The specification should be consistent with the actual cargo being offered.

2. Quantity and Delivery Schedule

The contract should state the agreed quantity and any permitted tolerance.

It should also establish whether the transaction involves:

• A single spot cargo
• Multiple cargoes
• Monthly supply
• A term supply arrangement

The loading window or delivery schedule should be clearly defined.

3. Crude Oil Pricing

Crude oil pricing can be structured around a recognized benchmark plus or minus an agreed differential.

The contract should identify:

• Pricing benchmark
• Differential
• Pricing period
• Quantity basis
• Applicable adjustments
• Currency

Buyers should evaluate the complete commercial cost rather than focusing only on the quoted crude price.

4. FOB or CIF Delivery Terms

The contract should clearly identify the agreed delivery basis.

FOB Crude Oil Contract

Under an FOB structure, the buyer generally takes responsibility for the main transportation from the agreed loading point after the applicable transfer point.

CIF Crude Oil Contract

Under a CIF structure, the seller’s obligations generally include arranging freight and insurance to the agreed destination port, subject to the specific contractual terms.

The contract should clearly state the applicable delivery point and allocation of costs, risk, and responsibility.

5. Inspection and Quality Verification

Inspection terms are an important part of a crude oil purchase contract.

The parties should establish:

• Who performs the inspection
• Where inspection takes place
• When the inspection occurs
• Which inspection company is used
• How quality is determined
• How quantity is measured
• What happens if the cargo does not meet specification

Independent inspection can provide additional assurance during international transactions.

6. Payment Terms

The contract should clearly state how and when payment is made.

Depending on the transaction, this may address:

• Payment method
• Payment timing
• Currency
• Banking requirements
• Documentary conditions
• Security arrangements where applicable

Payment conditions should correspond with the actual transaction structure and the obligations of both parties.

7. Crude Oil Purchase Documentation

The contract should identify the documents required for the transaction.

Depending on the cargo and transaction, documentation may include:

• Commercial invoice
• Certificate of origin
• Certificate of quality
• Quantity certificate
• Crude assay
• Inspection certificate
• Bill of lading
• Export documentation
• Other agreed cargo documents

The contracting parties should ensure that documentation accurately corresponds to the cargo and transaction.

8. Title and Risk Transfer

The purchase contract should establish when ownership and risk transfer between the seller and buyer.

This should be aligned with the agreed delivery terms and the specific contractual provisions.

Clear wording is important because responsibility for loss, damage, freight, insurance, and other obligations can depend on the agreed transfer point.

9. Buyer and Seller Compliance

International crude oil transactions may require both parties to complete appropriate corporate and compliance checks.

A buyer or seller may need to provide company registration information, authorized representative details, beneficial ownership information, and other documentation required for the transaction.

The contracting entity should be clearly identified before execution.

10. Default and Dispute Provisions

A crude oil purchase contract should also explain what happens if one party fails to perform.

Relevant provisions may cover:

• Delayed delivery
• Failure to provide cargo
• Non-payment
• Quality disputes
• Quantity discrepancies
• Contract termination
• Force majeure
• Governing law
• Dispute resolution

These provisions give the parties a defined process for handling unexpected events.

Crude Oil Purchase Contract Checklist

Before signing, buyers should confirm that the contract clearly states:

Product: Crude grade, origin, and specification
Quantity: Cargo size or recurring volume
Price: Benchmark, differential, currency, and pricing period
Delivery: FOB or CIF, loading point, destination, and timing
Inspection: Quality and quantity verification
Payment: Method, timing, and conditions
Documents: Required commercial and shipping documents
Risk: Transfer point and responsibilities
Compliance: Buyer and seller verification
Default: Remedies, termination, and dispute provisions

Before Signing a Crude Oil Purchase Contract

Buyers should ensure that the contracting party, supply source, cargo information, commercial terms, and documentation are properly verified before signing.

The purchase contract should reflect the actual transaction rather than relying on generic terms that do not match the proposed cargo or delivery structure.

For larger or more complex transactions, buyers should also obtain appropriate professional legal and commercial advice before execution.

Submit a Crude Oil Purchase Request

If you are seeking crude oil supply, provide your required grade, volume, destination, delivery terms, and preferred timing so the requirement can be reviewed before the appropriate commercial documentation is prepared.

Submit Crude Oil Purchase Request →

For initial commercial discussions, buyers may also contact the supply desk through the available business communication channel.

Contact the Supply Desk on WhatsApp →

Internal Linking

How to Buy Crude Oil Directly From a Refinery

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

Crude Oil Procurement Guide for International Buyers