Showing posts with label Caspian Sea. Show all posts
Showing posts with label Caspian Sea. Show all posts

Tuesday, March 19, 2019


The Caspian Sea, a particular sea that has become one of the most important hydrocarbon producing regions after the Persian Gulf


The Caspian Sea is an  of brackish water (salinity: 12.5 / thousand) without exit to the sea (endorheic) located between Europe and Asia. Its surface is 371,000 km (the largest lake in the world) and its maximum depth of almost 100 meters. It is 1210 km long and about 250-430 km wide. Its coast is 28 meters below sea level.
It is fed by the Volga, Ural, Emba and Kurá rivers. Due to its prolonged isolation from the rest of the seas (it was isolated geologically some 5.5 million years ago) its ecosystems evolved independently and there are species with their own characteristics that are not found in open seas. An example is the sturgeon that is fished for the production of caviar (lately it has suffered heavy overfishing) and the Caspian seal, which is the only seal that lives in fresh water (a related species is also found in Lake Baikal, which just as the Caspian is also an endorheic body of water).

The oil and gas region of the Caspian Sea, which includes Russia, Azerbaijan, Kazakhstan, Turkmenistan and Uzbekistan, is one of the oldest hydrocarbon production areas in the world playing an increasingly important role in world production.
The area has important reserves both offshore and in the emergent areas of the basin. At the same time, its importance as a producer of natural gas is increasing rapidly.
It is estimated that there are some 48,000 million barrels of oil and 292 trillion (292,000,000,000,000) of natural gas in the sedimentary basins of the Caspian Sea and surrounding areas. The offshore fields represent 41% of the crude oil and 36% of the natural gas of the entire Caspian basin.
Most of the offshore reserves are in the northern sector of the Caspian Sea, while natural gas reserves are in the southern region. According to U: S estimate. Geological Survey would have about 20,000 million of oil and 243 billion of natural gas that have not yet been discovered. Most of the latter are in the south where disputes over water rights make exploration difficult.
It can be estimated that the Caspian region produces an average of 2.6 million barrels per day, which is 3.4% of world production.
In the recent decade, the continental fields of Kazakhstan were those that contributed mainly to regional production, particularly the Tengiz field. During the 2006-2008 period, Azarbaiján developed the offshore Azeri-Chirag-Guneshli fields, significantly increasing its offshore production share. There is also oil production in Turkmenistan near the coast and in the Russian region north of the basin.

Monday, January 14, 2019

For people interested in geography

The Caspian Sea
The destiny of an unique body of water is decided through a complex multilateral agreement

The Caspian Sea is the world's largest inland body of water, with a surface area of 371,000 km2 with a maximum length of 1,030 km and a maximum width of 435 km.  Its average depth is 211 meters and the maximum depth is 1,024 meters. It has been variously classed as the world’s largest lake or a full-fledged sea. It is an endorheic basin (a basin without outflows) located between Europe and Asia, to the east of the Caucasus Mountains and to the west of the steppes of Central Asia. It is bounded by Kazakhstan to the northeast, Russia to the northwest, Azerbaijan to the west, Iran to the south, and Turkmenistan to the southeast. The Caspian Sea is home to a wide range of species and may be best known for its caviar and oil industries. Pollution from the oil industry and dams on rivers draining into the Caspian Sea have had negative effects on the organisms living in the sea.
It would be reasonable to assume that the Caspian Sea is, well, a sea. But at the heart of this long-running dispute is whether or not the 370,000 sq km (143,000 sq mile) body of landlocked water should be considered a lake.
Until the dissolution of the Soviet Union (USSR) in 1991, that's what it was known as and shared between the USSR and Iran.
But the arrival on the scene of new countries complicated this issue, with ensuing claim and counterclaim.
Iran had argued it was a lake and not a sea, but none of the four other countries agreed.
Why is the difference so important?
If it was treated as a sea, then it would be covered by international maritime law, namely the United Nations Law of the Sea.
This binding document sets rules on how countries can use the world's oceans. It covers areas such as the management of natural resources, territorial rights, and the environment. And it is not limited to littoral states, meaning others can seek access to its resources.
But if it is defined as a lake, then it would have to be divided equally between all five countries.
It would be reasonable to assume that the Caspian Sea is, well, a sea. But at the heart of this long-running dispute is whether or not the 370,000 sq km (143,000 sq mile) body of landlocked water should be considered a lake.
Until the dissolution of the Soviet Union (USSR) in 1991, that's what it was known as and shared between the USSR and Iran.
But the arrival on the scene of new countries complicated this issue, with ensuing claim and counterclaim.
Iran had argued it was a lake and not a sea, but none of the four other countries agreed.
Why is the difference so important?
If it was treated as a sea, then it would be covered by international maritime law, namely the United Nations Law of the Sea..
This binding document sets rules on how countries can use the world's oceans. It covers areas such as the management of natural resources, territorial rights, and the environment. And it is not limited to littoral states, meaning others can seek access to its resources.
But if it is defined as a lake, then it would have to be divided equally between all five countries. t's difficult to say, as the final text of the deal is yet to be published.
Another key factor is that seabed boundaries are yet to be negotiated (although now it's the subject of bilateral agreements - not multilateral as before).
But because the deal does not define the Caspian as a lake, Iran - which has the smallest coastline - is viewed as a potential loser.
Iranian social media users have accused the government in Tehran of "selling off" the Caspian Sea on Sunday.
However, Iran - which is currently under growing political and economic pressure from the West - might see some political benefits in securing the clause that bars any armed presence on the Caspian other than that of the five littoral states.
Had the Caspian been defined as a lake, Azerbaijan and Kazakhstan - who have established an early claim over large areas of the Caspian - stood to lose out under such a split.
So the basis of all previous disagreements stems from who gets access to what. This is important because...
It is rich in oil and gas
The Caspian Sea is highly-prized for its vast oil and gas reserves.
It's estimated there are 50 billion barrels of oil and nearly 300 trillion cubic feet (8.4 trillion cubic metres) of natural gas beneath its seabed.
Image copyrightAFPImage captionSoviet oil rigs are seen on the shores of the Caspian sea in Azerbaijan
That is why disagreements over how to divide some of its huge oil and gas fields have been numerous - and acrimonious. On occasion, warships have been deployed to scare off contractors hired by rival countries.
The disagreement over its legal status has also prevented a natural gas pipeline being built across the Caspian between Turkmenistan and Azerbaijan. This would have allowed Turkmen gas to bypass Russia on its way to Europe.
Russia - a major exporter of gas and oil to Europe - has previously objected to this.
International oil companies that rushed to the Caspian in the 1990s have now pulled out.
But there is a possibility this could be explored further following Sunday's deal.
4. It provides the world's caviar
The Caspian Sea has a number of different species of sturgeon, the fish that yields the highly prized delicacy caviar.
Between 80-90% of the world's caviar is sourced from the Caspian, but the numbers have been falling over the past few decades.
Reproduced and adapted from:
https://www.bbc.com/news/world-45162282
and Wikipedia