The US' Chevron has completed one of the world’s biggest-ever seismic surveys in the Divided Zone that is shared between Saudi Arabia and Kuwait.

The survey was completed before the end of 2017, according to a spokesperson for the oil company.

“This includes the acquisition and processing of this super large land survey of approximately 4,600 square kilometres, the fifth-largest onshore seismic survey in the world,” the spokesperson said.

Chevron is now interpreting the data.

The acquisition of the data was completed in 2016.

Chevron has an agreement with Saudi Arabia to operate the kingdom’s 50 per cent interest in the Divided Zone’s onshore hydrocarbon resources, but is not producing from the region at the moment.

Production from the onshore Wafra field in the Divided Zone halted in 2015.

The stoppage was blamed on difficulties in securing work and equipment permits due to a political spat between Kuwait and Saudi Arabia.

This is yet to be resolved.

The shut-in also affected a planned field development project called Wafra Joint Operations Heavy Oil, which was cancelled before the front end engineering design (feed) was completed.

The project was being developed by Chevron in cooperation with Kuwait Gulf Oil Company (KGOC).

The first phase of this project was estimated to be worth $5bn and had a planned design capacity of 100,000 barrels of crude oil per day (b/d).

Another scheme that was being developed jointly by Chevon and KGOC, known as the Central Gas Utilization Project, was also cancelled due to unresolved operational issues.

This project was estimated to be worth $1bn and would have collected gas that was flared at the Wafra Field.