US 12,000,275 B2
Geopressure integration between deep wells by multiple datums and pressure corrections
Simon A. Stewart, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Mar. 29, 2021, as Appl. No. 17/215,669.
Prior Publication US 2022/0307369 A1, Sep. 29, 2022
Int. Cl. E21B 49/00 (2006.01); E21B 47/06 (2012.01); G01V 11/00 (2006.01)
CPC E21B 49/00 (2013.01) [E21B 47/06 (2013.01); G01V 11/002 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computer-implemented method, comprising:
identifying a set of geological boundaries for a group of multiple wells in a region that includes a reference well, wherein each well of the group of multiple wells has geological boundaries at depths that are different from depths of geological boundaries in the reference well;
matching geological boundaries of the group of multiple wells, including identifying tops and bases of geological layers for each well of the group of multiple wells;
determining a framework of the geological boundaries of the reference well and the group of multiple wells, wherein the framework includes a set of datums identifying shifts of pressures relative to the reference well;
determining, using the framework and the matched geological boundaries, depth shifts for depths having corresponding pressure data, wherein the depth shifts are redatumed based on differences in depth of the geological layers of each well;
presenting, in a graphical user interface (GUI), a display of a graph mapping pressures of the group of multiple wells at different depths and based on redatuming of each well of the group of multiple wells to a datum of the reference well, wherein the graph shows that the geological boundaries of the group of multiple wells identify same geological layers at different depths at respective well locations;
optimizing, based on the framework, parameters, locations, and safe drilling operations of wells in the group of multiple wells, by applying a reduction of well design requirements, based on the framework, to determine optimized parameters, optimized locations, and optimized safe drilling operations of the wells in the group of multiple wells; and
drilling, based on the optimized parameters, the optimized locations, and the optimized safe drilling operations, the wells in the group of multiple wells.