Caption: Figure 23: (a) The initial oil-water contact
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.The Ghawar structure consists of two subparallel, north-south trending structural crests, separated by a saddle.
The sidetrack 16/2-7A found a gross reservoir column of some 25 m, of which 17 m net was above the oil-water contact
, Lundin said.
As expected, below the field oil-water contact
both sands were found to be water bearing.
The well found oil-water contact
58 metres below lowest-known oil in Odum-1 well, extending the known oil column beyond the deepest oil seen in the Odum-1.
The KHE-8 well will commence drilling operations following completion of drilling operations on the Yousefieh-2 well.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 16/2-7 well came across a gross reservoir column of excellent quality Upper Jurassic sandstone of around 35 m of which 7 m were above the oil-water contact
. The field can be extended 5.6 km to the south of the 16/2-6 discovery well and 4.5 km southwest of the first appraisal well 16/3-4, Lundin said.
The I-9 ST-2 well found top of the basal sandstones at a depth of 2,038 feet true vertical depth sub-sea and the oil-water contact
at 2,081 feet, resulting in a vertical oil column of 41 feet gross at the well.