As Japan's Arabian Oil Co., Ltd. awarded the concession agreement year (1377 AH / 1957 AD) of the neutral zone - divided - between Saudi Arabia and Kuwait (the built zone ).
The following table: shows the date of discovery of each field separately, depending on the density scale of the American Petroleum Institute, the sulphur percentage by weight ratio.
Name | Date | Mass | Sulfur percentage by weight |
Aramco Co. | April 1956 | 31 | 1.63 - 2.41 |
Khurais | October 1957 | 33 | 1.89 |
Al-Menifah | November 1957 | 29 - 26 | 3.66 - 2.97 |
Abo Sa'afa | May 1963 | 30 | 2.69 |
Al-barri | April 1964 | 41 - 32 | 2.16 - 0.09 |
Al-Zeit Ara. Co. | |||
Al-Khafji | January 1960 | 28.5 - 28 | 2.85 |
Al-Hoot | October 1963 | 38 - 25 | 1.3 - 0.7 |
Jati Co. | |||
Janoob Al-Fawares | March 1963 | 24 | 3.18 |