--> Abstract: Early Cretaceous Zubair Sandstone Formation: Oil and Gas Existence and Production from Ibn Umr Field Mesopotamian Basin, by Jamal J. Mhuder and Riadh Abdulsadh; #90072 (2007)

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Early Cretaceous Zubair Sandstone Formation: Oil and Gas Existence and Production from Ibn Umr Field Mesopotamian Basin

Jamal J. Mhuder1 and Riadh Abdulsadh2
United Kingdom

Ibn Umr field is located in southeastern Mesopotamian basin. It produces oil and associated gas from the Early Cretaceous sandstone succession Zubair formation.
Stratigraphic and sedimentological studies and logs for this field demonstrated clearly that Zubiar sandstone formation could be subdivided into (15) Units with continuity across most of the field. Five sandstone units are reservoirs (zE, zF, zH, zN, zOP).
The facies of Zubair formation have been fluvial to deltaic. Porosity in clean productive sandstone ranges from 16-26%, whereas the permeability ranges from 8-185mD and the saturation is about (15-46%). The API of the oil is 50o according to the test production of the last two wells (NR-14, 15).
In addition to oil there is a good amount of gas which is produced in association with oil, but it is not exploited for export till now. Structurally the formation is affected by normal fault especially at the center of the field. The field was discovered in 1949 and became commercial in 1979.

 

AAPG Search and Discovery Article #90072 © 2007 AAPG and AAPG European Region Conference, Athens, Greece