(Bloomberg) -- Egypt will begin receiving gas from Israel under a $15 billion deal around the middle of the year, after unexpected issues with the pipeline connecting the two countries delayed the start-up by several months, people familiar with the situation said.

Egyptian Oil Minister Tarek El-Molla told the CERAWeek conference in Houston last week that the government expects the first flows of Israeli gas to arrive around mid-year.

He didn’t give details, but two people familiar with the situation said due diligence by the companies involved had discovered that the pipeline would require more work than expected to bring it online. The Egyptian partner in the project had said he expected trial quantities to begin flowing in March if the pipeline was found to be in good condition.

The companies developing Israel’s largest natural gas fields and their Egyptian partner agreed last year to buy a 39 percent of the East Mediterranean Gas Co., which owns the sub-sea pipeline connecting southern Israel to Egypt’s Sinai Peninsula, clearing the main legal obstacle to the 10-year export contract.

The gas deal adds an economic dimension to a relationship dominated by security since the two countries signed a peace treaty that changed the face of the Middle East four decades ago. It also advances Egypt’s plan to capitalize on its own giant Zohr gas field and position itself as an energy re-export hub on the doorstep of gas-hungry Europe.

Egypt will initially import gas from Israel’s Tamar field and receive flows from nearby Leviathan once it comes online at the end of the year.

While the overall condition of the pipeline is good, Israel’s Delek Drilling LP, U.S.-based Noble Energy Inc. and Egyptian East Gas Co. found some components were missing or faulty, while modifications and repairs would take longer than foreseen, the people added, declining to be named as the information was not public. Spare parts had to be imported, they said.

A spokeswoman for the companies developing the Israeli reservoirs declined to comment. Officials from East Gas did not immediately respond to requests for comment.

The companies are working to reverse the flow of the pipeline, which used to carry Egyptian gas to Israel. It’s been idle for years after Egypt halted exports in 2012 due to a domestic energy shortage and repeated attacks by Islamic militants on the overland connection that runs through restive northern Sinai.

Talks are also underway to build a new sub-sea gas pipeline that would carry additional volumes from Israel’s offshore fields to Egypt’s existing liquefied natural gas plants.

To contact Bloomberg News staff for this story: Yaacov Benmeleh in Tel Aviv at ybenmeleh@bloomberg.net

To contact the editors responsible for this story: Lin Noueihed at lnoueihed@bloomberg.net, Tarek El-Tablawy

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