Where can i find about oil fields at Kazakhstan that was closed(stop developing) because it contains H2S?

I am looking for information about oil fields that stopped developing at Kazakhstan because it contains H2S(hydrogen sulfur).


At those days developers close the fields,but nowadays they try to open it(developing it) back because now they have special treatment that is called Sulfur Recovery Unit.Where can i find about oil fields at Kazakhstan that was closed(stop developing) because it contains H2S?
I don't know for sure, but I do know that sour gas (sulfuric acid gas) is not uncommon in oil fields. Sulfur is a major constituent of organic molecules that is released during the chemical evolution of oil.