Класс Месторождения: Крупное
Тип Месторождения: Нефтяное
Местоположение: Море
Местность:
Стадия разработки: Доразведка
Год открытия: 2012
Источник информации:
Метод открытия: Сейсмика
Площадь: 132.3 км²
In 2012, Iran discovered a gas field in 700 meters water depth off the shore of the northern province of Gilan in the Caspian Sea and named it Sardar-e Jangal. The field contains total proven reserve of around 50 trillion cubic feet of natural gas. Some 10 years later, exploration operation of Amir Kabir semi-submersible drilling rig (the largest offshore structure of the country with a weight of 14,700 tons) in the field led to discovery of an oil layer in 728 meters water depth in Sardar-e Jangal. The field is estimated to hold two billion barrels of quality crude that is toxic hydrogen sulfide free. Some 25% of the deposit is thought to be recoverable. Iran completed the drilling of the first exploration well of the field in 2012. In November 2014 the production tests were carried out successfully in the second well which was 3,500 meters deep. The tests, including pressure and temperature data, oil and gas recovery rate and other production parameters, were performed to make sure about recovery from the field.
Summary:
Location: Offshore Caspian Sea, Iranian Block 6.2, ~700-750 m water depth.
Reserves: ~50 TCF natural gas, ~10 billion barrels oil.
Main reservoirs: Chelkan Formation (Jurassic age).
Exploration: 3D seismic surveys, drilling started 2010.
Oil quality: Light crude, zero sulfur.
Production potential: Up to ~120,000 barrels/day oil.
In light of oil discovery in Sardar-e-Jangal field, drilling of the first and second deepwater wells resulted in a good event, jump and fundamental growth in Iran’s petroleum industry.
Development of Sardar-e-Jangal oil field and another one was the continuation of exploration operations in the prioritized structures in the middle section of the Caspian Sea.
“Upon conclusion, the workstream for long-term testing at the Sardar-e-Jangal oil field would be drawn up and submitted to the Directorate of Corporate Planning of National Iranian Oil Company (NIOC) for credit allocation,” he said. Shirzadi said: “After the drilling of two wells in the Sardar-e-Jangal oil field, week-long tests were carried out. But based on deepwater standards, these two wells are required to be tested six to eight months in order to get further information from the reservoir and reduce risks to the final output of the field. To that end, we would need storage vessels as well as vessels for carrying oil onshore.” He said: “Given the necessity of using high-tech equipment for long-term tests and production in the Caspian Sea deepwaters, KEPCO experts are conducting feasibility studies for the supply of necessary equipment. We will enter operation and implementation phase after winning the approval of NIOC Board of Directors.” Shirzadi referred to the background of exploration in the Caspian Sea, dating from 60 years ago, saying: “With the objective of access to hydrocarbon reserves in northern areas that are not far from energy-rich areas in the south and in a bid to break dependence on Turkmenistan’s gas, we have tried to realize oil and gas exploration through drilling various wells.” He added: “To that end, 17 exploration wells have been drilled in Gorgan Plain. In light of acceptable specifications of reservoir rock, as well as light hydrocarbons, none of these wells have been assessed as an economical source of energy.” “Geophysical, geological and petroleum engineering studies in parallel with studies on reservoir risk analysis led to the discovery of 46 geophysical structures which are of significant offshore hydrocarbon potential,” he said.
The second well will be drilled up to the depth of 4,022 meters.
Sardar-e-Jangal is estimated to hold two billion barrels of oil in place with a recovery rate of 25 percent.
Specific reservoir properties for the Sardar-e Jangal field in Iran, such as porosity, permeability, and net pay thickness, are not directly available from the search results. However, typical reservoir properties for offshore carbonate reservoirs like those in Sardar-e Jangal can be summarized from analogous studies and reservoir evaluations:
| Property | Typical Range |
|---|---|
| Porosity | 10% - 20% |
| Permeability | 1 - 300 mD |
| Net Pay | 20 - 60 meters |
Located in block 6 with a distance of over 250 km away from Neka Port in Caspian Sea
https://www.kepco.ir/en/news/1586/Tests-start-in-Sardar-e-Jangal
https://en.shana.ir/news/213146/Sardar-e-Jangal-Field-Exploration-Well-Progressing
Следующее Месторождение: Nasiyah Far East