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The Mesopotamian Petroleum
researches..
Hydrogeochemistry of Yamama Reservoir Formation
Water – West Qurna Oil Field- Southern Iraq.
Abdul-Mutalib Hasson Al-Marsoumi
*/ College of
Science- Basrah University
Abdul-Wahab Dawood
Salman / South Oil company
Abstract
Six
formation water samples were collected from six wells
sunk inYamama reservoir formation water in West Qurna
oil field. Temperature, pH, and electrical resistivity
were directly measured on the spot. Then the collected
samples were analysed for Na+, K+,
Ca+2, Mg+2, Fe total, H2S,
Cl-, CO3-2, HCO3-,
SO4-2, and Total Dissolved Salt (T.D.S).
The formation waters under study are characterized by
their acidic medium (pH=5.88) and thermal nature
(97-115°C ) and low resistivity. The hydrochemical study
suggests that the Yamama formation waters be of
Na-Ca-Chloride type. This type of water reflects the
marine origin and subjection to diagenesis processes,
further more, the hydrochemical ratios indicate the
expected west ward flow of Yamama formation water in
West Qurna field, besides, the relative stagnant
conditions favorable for hydrocarbon preservation.
* Phd: Abdul – Mutalib Hasson Mohammed Al-Marsoumi
E-mail: abdmars@yahoo.com
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