Well Log Classification Overview Well Log Classification and

Well Log Classification Overview

Well Log Classification and Cataloging Well Log Data Repository PWLS Class Repository Well Log Catalog Industry Data Company Data

Activities Enabled by PWLS Meta Data • • Classify well logs Classify well log channels Query for well log channels

Classify a Well Log / Channel / Parameter • well log well_log_service_class – by interpretation of well log header • channel company_channel_class – validate against dictionary • parameter company parameter spec. – validate against dictionary

Genericity of classification • original acquired data primarily co. data – company channel class – well log service class • computed data primarily industry data – well log curve class – well log tool class • processed data combined approach

Query by technology • goal: logs of a given technology • industry classification: well log tool class • company classification: well log service class • catalog: classification by well log service class • result: well log data

Query by channel attributes • goal: channels of a given object, property, function, . . . • industry classification: well log curve class • company classification: company channel class • catalog: classification by company channel class • result: well log data

Query by propery type • goal: channels of a given property type • industry classification: well log curve class • company classification: company channel class • catalog: classification by company channel class • result: well log data

Parameter-Augmented Query • goal: well logs, subject to parameteric constraints e. g. total_depth > 33000 ft • industry classification: param spec (property type) e. g. Bottom_Depth • company classification: company parm spec e. g. BOTTOM_DEPTH • catalog: parametric classification e. g. BOTTOM_DEPTH=44000(m) • result: well log data

Existing Data Well Log Data Repository query engine Dictionary Well Log Catalog 15: MDL : xxxxx 150: CDL : xxxxx 280: SLD : xxxxx 440: LDS : xxxxx

Queries Well Log Data Repository Where are my density logs? Dictionary Well Log Catalog 15: MDL : xxxxx 150: CDL : xxxxx 280: SLD : xxxxx 440: LDS : xxxxx

Existing Data PWLS . . . density. . . Well Log Data Repository query engine Dictionary Well Log Catalog 15: MDL : xxxxx 150: CDL : xxxxx 280: SLD : xxxxx 440: LDS : xxxxx Industry Data Density : xxxxx Acoustic : xxxxx Neutron : xxxxx Company Data 15: MDL : xxxxx : Density 150: CDL : xxxxx : Density 280: SLD : xxxxx : Density 440: LDS : xxxxx : Density