US 12,442,285 B2
Method and apparatus for identifying analog wells
Adrian O'Neill, London (GB); Casey Denny, Houston, TX (US); Jeremy Eade, Houston, TX (US); and Chunlei Chu, Houston, TX (US)
Assigned to BP Corporation North America Inc., Houston, TX (US)
Filed by BP Corporation North America Inc., Houston, TX (US)
Filed on Nov. 1, 2022, as Appl. No. 17/978,434.
Claims priority of provisional application 63/275,276, filed on Nov. 3, 2021.
Prior Publication US 2023/0135833 A1, May 4, 2023
Int. Cl. E21B 44/00 (2006.01); E21B 41/00 (2006.01)
CPC E21B 44/00 (2013.01) [E21B 41/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for planning a subject well, the method comprising:
receiving, by a processor, a well profile for the subject well, the well profile comprising a plurality of sets of attributes, each set of attributes corresponding to one of a plurality of depths of the subject well;
categorizing, by the processor, each set of attributes of the plurality of sets of attributes as being in a first zone or in a second zone to generate a pivoted well profile, wherein the pivoted well profile comprises:
a number of sets of attributes in the first zone; and
a number of sets of attributes in the second zone;
comparing, by the processor, the pivoted well profile of the subject well to a library of well profiles, wherein each well profile in the library comprises:
a number of sets of attributes in the first zone; and
a number of sets of attributes in the second zone;
adding, by the processor, the well profile for the subject well to the library of well profiles;
performing, by the processor, principal component analysis on the library including the well profile for the subject well to generate reduced well profiles for the subject well and for the well profiles in the library, wherein a reduced well profile for each well comprises a plurality of reduced sets of attributes, each reduced set of attributes corresponding to one of a plurality of depths of the well, wherein categorizing each set of attributes of the plurality of sets of attributes comprises categorizing the plurality of reduced sets of attributes as being in the first zone or in the second zone to generate a reduced, pivoted well profile that comprises a number of reduced sets of attributes in the first zone and a number of reduced sets of attributes in the second zone, and wherein comparing the pivoted well profile comprises comparing the reduced, pivoted well profile of the subject well to the reduced well profiles in the library,
identifying, by the processor and based on the comparison, an analog well from the library, wherein a difference between a reduced well profile of the identified analog well and the reduced, pivoted well profile of the subject well is less than a threshold; and
providing an indication of the identified analog well.