Acquisition_2D

[Columns] [Composed Of] [Referenced By] [Refers To]

General Information

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Name Acquisition_2D
Entity Type Table
Description An activity undertaken for the purpose of collecting seismic data and performed in a line mode.
Submodel Seismic
Entity Scope Project
Primary Key Id
Natural Key Name , Survey_2D_Id , Existence_Kind , Version
Generalizations Seismic_Acquisition_Act , Activity , Entity , IT_Object , Tracked_Object
Specializations


Columns

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NameValue DomainProperty /
Storage Unit		DescriptionRequired /
Default		Type
Acquisition_Data_Type R_Acquisition_Data
Refers to type of data stored with seismic acquisition. No
 VARCHAR2(64)
Acquisition_Format R_Seismic_Format
Defines the seismic or navigation format associated with the acquisition. For Ex: SEGD, UKOOA_P2. No
 VARCHAR2(64)
Acquisition_Method R_Acquisition_Method
The method used to acquire the data. Examples are Ocean Bottom Cable (OBC), Conventional Cable, and Radio Telemetry. No
 VARCHAR2(64)
Activity_State STRING64 NA
 The current state, or status, of the activity. Activity state is a refinement of the lifecycle indicator Existence_Kind. For example, a drilling job whose Existence_Kind is "Actual" could have an activity state of "turning to the right", "suspended due to weather", or "tool makeup or breakdown". An activity whose Existence_Kind is "Required" could have State values like "under investigation", "proposed" and "AFE approved". Note: The valid list of activity states will vary from one kind of activity to another, so the values entered into this column are not validated via a lookup table. No
 VARCHAR2(64)
Activity_Template_Id Activity_Template
The identifier of the activity template which activates or characterizes the Activity. No
 NUMBER(38)
Auxiliary_Channel_Count double No_Unit
 The number of non-data channels recorded during acquisition. No
 NUMBER
Cable_Depth double Depth
m		 Nominal depth of cables maintained during survey. No
 NUMBER
Cable_Length double Length
m		 The length of the seismic cables used in acquisition. No
 NUMBER
Charge_Per_Hole double Mass
kg		 The amount of explosive charge used per shot hole. Several shot holes may be drilled for each shotpoint. No
 NUMBER
Contract_Number STRING64 NA
 A number assigned to the contract, such as an AFE number. No
 VARCHAR2(64)
Cost double No_Unit
 The total cost of the acquisition. No
 NUMBER
Cost_Currency R_Currency
The currency in which the costs related to the acquisition are expressed. No
 VARCHAR2(64)
Duration double Time
s		 The duration of the activity. For planned activities, this would be expected duration. No
 NUMBER
End_Date DATE NA
 The date and time at which the activity will end or did end. For planned activities, this would be expected end date. No
 DATE
Energy_Source_Count int No_Unit
 The number of sources used for acquisition. No
 NUMBER(10)
Energy_Source_Depth double Depth
m		 The depth of the energy source. No
 NUMBER
Energy_Source_Spacing double Length
m		 Separation between the sources in an array. No
 NUMBER
Energy_Source_System R_Energy_Source_System
Refers to the energy source system used for the acquisition. No
 VARCHAR2(64)
Energy_Sweep_Duration double Time
s		 The duration of the Vibroseis sweep. (PPDM 3.7) No
 NUMBER
Environment R_Seismic_Environment
Refers to the environment in which the seismic data was acquired, such as marine or land. No
 VARCHAR2(64)
Existence_Kind REF_EXISTENCE_KIND NA
 A reference value that describes the state of existence in the lifecycle of the entity, for example, Planned, Predicted, Required, Simulated, and Actual. Yes
Actual		 VARCHAR2(64)
External_Reference STRING64 NA
 A value that is used by an external organization to reference this activity. For example, if an external organization is hired to perform this activity, this column could be used to store the work order or purchase order number that organization uses to reference this activity. No
 VARCHAR2(64)
Far_Receiver_Distance double Length
m		 The distance from the shotpoint to the farthest receiver. No
 NUMBER
Field_Test_Date DATE NA
 The date that the field tests used to determine the acquisition parameters were run. No
 DATE
Field_Vessel_Identifier STRING8 NA
 Field Vessel Identifier No
 VARCHAR2(8)
Fold int No_Unit
 Fold coverage number for the entire dataset. This indicates the number of traces used to derive the final seismic trace at the bin location. No
 NUMBER(10)
GUID STRING128 NA
 Globally Unique IDentifier for an instance of a class. USAGE NOTES: There are two cases: 1) GUID is not populated or used; and 2) it is populated with a value that is globally unique. If the GUID is populated there are two means of doing so for a given project: 2a) Seabed automatically generates and populates the GUID when an instance is created (valid only on Oracle based systems); and 2b) the GUID is generated and populated by an application (other than Seabed) on instance creation. Whether Seabed automatically generates GUIDs for a project is determined by the Auto_GUID flag in SDS_Account. Note that techniques 2a and 2b can coexist in the same project. When GUIDs are automatically generated an application can override the automatically generated GUID with its own GUID by simply supplying the GUID value. Applications that generate their own GUIDs and populate the GUID column will function correctly on projects which have automatic GUID generation turned on. No
 VARCHAR2(128)
Group_Channel_Count int No_Unit
 The number of channels per receiver group. No
 NUMBER(10)
Gun_Antenna_Distance double Length
m		 The distance from the gun to the antenna. No
 NUMBER
High_Filter_Frequency double Frequency
Hz		 The high frequency cutoff value of the filter used during acquisition. No
 NUMBER
Holes_Per_Row double No_Unit
 The number of holes per row. No
 NUMBER
Holes_Per_Shot double No_Unit
 The number of holes per shot. No
 NUMBER
Horiz_Charge_Interval double Length
m		 The horizontal interval between charges during the acquisition activity. No
 NUMBER
Horiz_Charge_Length double Length
m		 The length of the horizontal charge used in the acquisition activity. No
 NUMBER
Horiz_Charges_Per_Shot double No_Unit
 The number of horizontal charges per shot during the acquisition activity No
 NUMBER
Id ID No_Unit
 Unique identifier for this entity. Yes
 NUMBER(38)
Insert_Date DATE NA
 Date the entity was created in the repository No
 DATE
Insert_User STRING64 NA
 The name of the user responsible for the creation of this entity in the repository. No
 VARCHAR2(64)
Internal_Reference STRING64 NA
 A value that is used internally within the organization to reference this activity. No
 VARCHAR2(64)
Lateral_Control_Method STRING32 NA
 A description of the method used to determine shotpoint locations. No
 VARCHAR2(32)
Line_Count int No_Unit
 The number of seismic lines acquired during this activity. No
 NUMBER(10)
Listen_Time double Time
s		 The duration of the recording time after the end of the Vibroseis sweep. No
 NUMBER
Low_Filter_Frequency double Frequency
Hz		 The low frequency cutoff value of the filter used during acquisition. No
 NUMBER
Name ENTITY_NAME NA
 The name given to any object or data item, e.g. name of Well, name of Field, etc. No
 VARCHAR2(255)
Navigation_System R_Navigation_System
Refers to the positioning system used for the acquisition. No
 VARCHAR2(64)
Near_Receiver_Distance double Length
m		 The distance from the shotpoint to the nearest receiver. No
 NUMBER
Nominal_Shot_Interval double Length
m		 The nominal distance between consecutive locations where seismic energy was released, or shotpoints No
 NUMBER
Original_Source STRING64 NA
 The name of the person, Organization or project source that originally provided this entity, e.g. "IHS-EnergyData" or "FinderUpper Stratton Deeper Pool 15" No
 VARCHAR2(64)
Party_Number STRING64 NA
 The seismic crew party number or name. No
 VARCHAR2(64)
Polarity STRING2000 NA
 The polarity used during the acquisition activity. No
 VARCHAR2(2000)
Produced_By STRING64 NA
 The name of application role that created the entity, for data created programmatically. No
 VARCHAR2(64)
Purpose STRING255 NA
 A description of purpose of the activity or its stage No
 VARCHAR2(255)
Receiver_Count int No_Unit
 The number of receivers, hydrophones or geophones for example, per receiver group. No
 NUMBER(10)
Receiver_Group_Count int No_Unit
 Number of receiver groups per cable. No
 NUMBER(10)
Receiver_Group_Interval double Length
m		 Separation between receiver groups. No
 NUMBER
Receiver_Line_Id Line
Refers to receiver positions during the acquisition. No
 NUMBER(38)
Receiver_Pattern STRING64 NA
 The pattern of received wave signals by the geophone/hydrophone groups. No
 VARCHAR2(64)
Receiver_Spacing double Length
m		 The distance between receivers, hydrophones or geophones for example, in a receiver group. No
 NUMBER
Record_Length int Short_Time
ms		 The length of the shot record . No
 NUMBER(10)
Recording_System R_Recording_System
Refers to the recording system used in acquiring the seismic data. No
 VARCHAR2(64)
Refraction_Cable_Config STRING64 NA
 The configuration of the refraction cable used in the acquisition activity. No
 VARCHAR2(64)
Remarks STRING2000 NA
 Any type of remarks added to an entity instance. No
 VARCHAR2(2000)
Replacement_Velocity double Acoustic_Velocity
m/s		 Typically the datum velocity for land surveys or the water velocity for marine surveys. No
 NUMBER
Row_Interval double No_Unit
 The interval between rows in the acquisition activity. No
 NUMBER
Rows_Per_Shot double No_Unit
 The number of shots per row in the acquisition activity. No
 NUMBER
SDAT_Label int No_Unit
 Label used by the security system for entitlements. SDAT is Secure Data Access Technology. No
 NUMBER(10)
Sail_Line_Id Sail_Line
Acquisition 2D associated with Sail Line No
 NUMBER(38)
Sample_Interval double Short_Time
ms		 Seismic acquisition sample interval, in milliseconds. No
 NUMBER
Secondary_Navig_System R_Navigation_System
The secondary navigation system used for the acquisition activity No
 VARCHAR2(64)
Seismic_Receiver_Type R_Seismic_Receiver
Refers to the type of receiver used in the seismic acquisition activity, such as a hydrophone or geophone. No
 VARCHAR2(64)
Shooting_Direction double No_Unit
 The compass direction in which the survey or line was shot, specified in degrees. No
 NUMBER
Shot_Count int No_Unit
 The number of locations that seismic energy was released, or shotpoints, during this acquisition activity. No
 NUMBER(10)
Signal_Frequency double Frequency
Hz		 The frequency of the signal used during the acquisition activity. No
 NUMBER
Source STRING64 NA
 Name of the person or organization responsible for this entitys E and P content and quality. Not the data technologist or IT expert creating the entity, for which see IT_Object.Insert_User and Update_User. No
 VARCHAR2(64)
Source_Length double Length
m		 The length of the source used in the acquisition activity. No
 NUMBER
Source_Line_Id Line
Refers to the source position during acquisition. No
 NUMBER(38)
Source_Pattern STRING64 NA
 The source pattern used during the acquisition activity. No
 VARCHAR2(64)
Source_Stagger_Distance double Length
m		 The distance from the source to the stagger during the acquisition activity. No
 NUMBER
Source_Width double Length
m		 The width of the source used in the acquisition activity. No
 NUMBER
Spread_Type R_Seismic_Spread
Refers to the type of receiver spread used in seismic acquisition. Examples are Split or Straddle, inline, L-Spread, and T-Spread. No
 VARCHAR2(64)
Start_Date DATE NA
 The date and time at which the activity will start or did start. For planned activities, this would be expected start date. No
 DATE
Streamer_Type R_Streamer
The type of streamer used during this seismic acquisition. No
 VARCHAR2(64)
String_Interval double No_Unit
 The interval between strings during the acquisition activity. No
 NUMBER
Strings_Per_Group double No_Unit
 The number of strings per group during the acquisition activity. No
 NUMBER
Survey_2D_Id Survey_2D
Refers to the survey for which this acquisition is a part. No
 NUMBER(38)
Sweep_Frequency_High double Frequency
Hz		 The high end of the sweep frequency for Vibroseis data. No
 NUMBER
Sweep_Frequency_Low double Frequency
Hz		 The low end of the sweep frequency for Vibroseis data. No
 NUMBER
Tape_Density double No_Unit
 The nominal density in bits per inch of the tapes on which the data was recorded during acquisition. It may vary from the tape density of individual inventory items associated with the acquisition activity. No
 NUMBER
Time_Delay_Correction double Short_Time
ms		 The field time delay correction. This is the amount of bulk shift needed to correct for any recording system delays. No
 NUMBER
Total_Acquisition_Charge double Mass
kg		 The total amount of explosive charge used in the acquisition. No
 NUMBER
Total_Area double Area
m2		 The area extent covered by the acquisition. No
 NUMBER
Total_Charge_Size double Mass
kg		 The total amount of explosive charge used per shot for explosive source types. No
 NUMBER
Total_Drill_Depth double Length
m		 The sum of the depths of all the shot holes drilled for the acquisition. No
 NUMBER
Total_Gun_Pressure double Pressure
kPa		 The total gun pressure used per shot for air gun energy sources. No
 NUMBER
Total_Gun_Volume double Volume
m3		 The total gun volume for air gun energy sources. No
 NUMBER
Total_Line_Length double Length
m		 The sum the lengths of all the lines acquired during this activity. No
 NUMBER
Total_Standby_Days double No_Unit
 The total number of days on standby during the acquisition activity. No
 NUMBER
Total_Survey_Days double No_Unit
 The total number of days used for the acquisition activity. No
 NUMBER
Transaction_Type R_Seismic_Transaction
Refers to the type of seismic transaction that has been arranged, such as sale, trade, lease etc. (PPDM 3.7)) No
 VARCHAR2(64)
Transient_Period R_Transient_Period
A code or name that indicates whether the activity is executed daily, monthly, on demand, etc. No
 VARCHAR2(64)
Triggering_Event_Id Event
The identifier of the event that triggered the start of this activity. Events can trigger activities. For example, an explosion event could trigger a firefighting activity. Note that this value should not conflict with, or be confused with, the value in Activity_Status.Triggering_Event. No
 NUMBER(38)
Update_Date DATE NA
 Date of the most-recent modification to the entity. No
 DATE
Update_User STRING64 NA
 The name of the user responsible for the last modification to this entity. No
 VARCHAR2(64)
Version STRING255 NA
 The form or variant of the entity. Yes
1		 VARCHAR2(255)
Vertical_Control_Method STRING32 NA
 A description of the method used to determine shotpoint elevation. No
 VARCHAR2(32)
Vessel_Name STRING255 NA
 The name of the vessel used in the acquisition. No
 VARCHAR2(255)


Referenced By

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From EntityLinkDescriptionImplementation TechniqueRequired
Geophysical_Inventory Acquisition_2D Refers to 2D acquisition to which this data belongs. Cascade No
SEGD_Header_Info Acquisition_2D Refers to SEGD information of 2D seismic acquisition dataset. Cascade No
Seismic_Line Acquisition_2D The acquisition activity associated with a seismic line. Cascade No
Selection_Item Acquisition_2D Refers to the 2D acquisition set selected for the business associate. Restrict No


Refers To

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LinkTo EntityDescriptionImplementation TechniqueRequired
Survey_2D Survey_2D Refers to the survey for which this acquisition is a part. Cascade No
Seismic_Receiver_Type R_Seismic_Receiver _ Restrict No
Sail_Line Sail_Line Acquisition 2D associated with Sail Line Cascade No
Receiver_Line Line Refers to receiver positions during the acquisition. Control No
Activity_Template Activity_Template _ Restrict No
Fulfilled_Activity Activity _ Assoc to Many No
Triggering_Event Event _ Nullify No
Transient_Period R_Transient_Period _ Restrict No
Super_Activity Activity _ Assoc to One No
Spread_Type R_Seismic_Spread _ Restrict No
Streamer_Type R_Streamer _ Restrict No
Transaction_Type R_Seismic_Transaction _ Restrict No
Acquisition_Data_Type R_Acquisition_Data _ Restrict No
Acquisition_Format R_Seismic_Format _ Restrict No
Acquisition_Method R_Acquisition_Method _ Restrict No
Cost_Currency R_Currency _ Restrict No
Energy_Source_System R_Energy_Source_System _ Restrict No
Environment R_Seismic_Environment _ Restrict No
Navigation_System R_Navigation_System _ Restrict No
Recording_System R_Recording_System _ Restrict No
Secondary_Navig_System R_Navigation_System _ Restrict No
Source_Line Line Refers to the source position during acquisition. Control No


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