Additionally, the wellbore encountered the current Oil-Water Contact
(OWC) at 1829 meters TVD, resulting in a 9 meters vertical oil column.
The fact that the Ghawar oil-water contact
is substantially higher on the west flank than on the east indicates a hydrodynamic gradient to the east, which may explain the much larger volume of oil in Ghawar than in Khurais.
Through this drilling we have extended the proven oil-bearing area and have confirmed a vertical oil column in excess of 150 feet, with no oil-water contact
As expected, below the field oil-water contact
both sands were found to be water bearing.
Given that the first two wells of the current campaign have still not encountered an oil-water contact
, the uncertainty of the prospective oil in place at least in the terrace area has been significantly reduced and should be further refined by the next two wells," added Mr.
KHE-8 is located on the southern flank of the Khurbet East Field and is designed to provide reservoir and structural information in addition to identifying the oil-water contact
, with the potential to be used later as a water disposal well.
In fact, Twilight in the Desert is more monograph than book, a detailed and technical assessment that's heavy on references to permeability (delightfully measured in millidarcies), the Arab D geological formation, rock homogeneity, oil-water contact
planes (Ghawar's being mysteriously tilted), reservoir fractures, and more.
The main pay sands are approximately 500 feet structurally higher than the MC 941 A-1 well and 1000 feet above the original oil-water contact
The well will target an intermediate depth, below the lowest known oil in the Moqueta field and shallower than the reservoirs in Zapotero-1, to further define the oil-water contact
location and ultimate size of the Moqueta oil accumulation," concluded Coffield.
This is due largely to the establishment of a deeper oil-water contact
(more oil originally in place) and improved recovery efficiency.
The oil-water contact
was also identified at deeper levels, being a relevant indicator in the delineation process of the Vesuvio complex.
The Envidia-1 well had oil shows above the oil-water contact
of the Bretana field, but was not tested.