POSC Specifications: Epicentre Version 3.0 | Logical Data Model |
These modifications describe the changes proposed to improve the description of fluid samples (deleting pressurized sample and adding ability to describe new sample created from existing samples).
CHANGE ESM_recombined_fluid_sample (*<REMARK>CHANGE ESM_recombined_fluid_sample CONTEXT Epicentre_2_2;*) (*<CHANGE> These modifications describe the changes proposed to improve the description of fluid samples (deleting pressurized sample and adding ability to describe new sample created from existing samples). *) ALTER ENTITY pressurized_fluid_sample AS recombined_fluid_sample (*<desc> This is a fluid sample created by re-combining other fluid samples. This often occurs when collecting surface samples in which the reservoir liquid flow stream has become separate liquid and vapor flow streams at the surface, such as at a separator.*); DROP initial_pressure; INVERSE ADD created_from : SET[0:?] OF fluid_sample FOR combined_to_create (*<desc> These were the original fluid sample that were used to create this recombined fluid sample.*); END_ENTITY; ALTER ENTITY fluid_sample; ADD combined_to_create : OPTIONAL recombined_fluid_sample (*<desc> This designates the resulting, recombined fluid sample that is created when this sample is combined with other fluid samples.*); END_ENTITY; ALTER ENTITY fluid_system; INVERSE ALTER pty_pressure AS initial_pressure (*<desc> This is the initial pressure of the fluid system, usually representing the pressure at which the system was discovered, defined or collected.*); ALTER pty_temperature AS initial_temperature (*<desc> This is the initial temperature of the fluid system, usually representing the temperature at which the system was discovered, defined or collected.*); ADD pty_transient_pressure : SET[0:?] OF pty_transient_pressure FOR fluid_system (*<desc> These are the time dependent pressures measured in this fluid system.*) (*<verb>have a property of*); END_ENTITY; ALTER ENTITY pty_transient_pressure; ADD fluid_system : OPTIONAL fluid_system (*<desc> The fluid system described by this pressure.*); UNIQUE ALTER si ADD fluid_system LAST; END_ENTITY; END_CHANGE;