US 11,713,666 B2
Systems and methods for determining fluid saturation associated with reservoir depths
Ali M. Al-Shahri, Doha (SA); Khaled Benzaoui, Dhahran (SA); and Yahya Abdoh Mohammed Ghuwaidi, Dammam (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Mar. 5, 2021, as Appl. No. 17/193,602.
Claims priority of provisional application 63/022,863, filed on May 11, 2020.
Prior Publication US 2021/0348499 A1, Nov. 11, 2021
Int. Cl. E21B 47/003 (2012.01); E21B 47/04 (2012.01)
CPC E21B 47/003 (2020.05) [E21B 47/04 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method comprising:
accessing, by a computing device, data describing a plurality of fluid volume values associated with a reservoir, the plurality of fluid volume values include a plurality of cumulative water volume values and a plurality of cumulative hydrocarbon volume values;
utilising, by the computing device, the data describing the plurality of fluid volume values to generate water cut values associated with intervals corresponding to depth levels of the reservoir;
generating, by the computing device, a fractional flow curve including the water cut values associated with the intervals corresponding to the depth levels of the reservoir;
utilizing, by the computing device, the fractional flow curve including the water cut values to determine saturation values associated with the intervals corresponding to the depth levels of the reservoir; and
generating a saturation graphical representation including the saturation values, wherein the saturation graphical representation includes dry interval levels and wet interval levels, wherein the dry interval levels are determined using back propagation techniques and wherein the wet interval levels are determined using forward propagation techniques.