DOBS — Drilling/Advancement Observations & Parameters

Path: PROJ → LOCA → DOBS · Family: Exploratory Holes, Sampling & Field Records

Editions: 4.0.3 – 4.2

Key chain

Identified by LOCA_ID, DOBS_TOP, DOBS_BASE, DOBS_SET. Inherits LOCA_ID from LOCA.

Heading	Status	Type	Unit	Editions	Description
LOCA_ID (key)	KEY	ID			Location identifier
DOBS_TOP (key)	KEY	2DP	m		Depth to top of reported section
DOBS_BASE (key)	KEY	2DP	m		Depth to base of reported section
DOBS_SET (key)	KEY	X			Readings set reference
DOBS_DURN	OTHER	T	hh:mm:ss		Duration to advance reported section
DOBS_STIM	OTHER	DT	yyyy-mm-ddThh:mm:ss		Date and time of start of reported section
DOBS_ETIM	OTHER	DT	yyyy-mm-ddThh:mm:ss		Date and time at end of reported section
DOBS_DHRT	OTHER	1DP	Nm		Drill head rotational torque
DOBS_DHRS	OTHER	0DP	rpm		Drill head rotational speed
DOBS_PENR	OTHER	1DP	m/hr		Penetration rate
DOBS_HAMM	OTHER	YN			Hammering used during section
DOBS_THRP	OTHER	1DP	bar		Pressure of downthrust system
DOBS_RESP	OTHER	1DP	bar		Pressure of restraining (holdback) system
DOBS_TORP	OTHER	1DP	bar		Torque pressure
DOBS_TORQ	OTHER	1DP	Nm		Torque applied to top of drill rods
DOBS_THST	OTHER	1DP	kN		Downward thrust on bit
DOBS_REST	OTHER	1DP	kN		Restraining (holdback) force
DOBS_HAMP	OTHER	1DP	bar		Supply pressure to downhole hammer
DOBS_SPEN	OTHER	1DP	MJ/m3		Specific energy
DOBS_FMPO	OTHER	1DP	kPa		Flushing medium pressure at the output of the pump over flush zone
DOBS_FMCR	OTHER	1DP	l/min		Flushing medium circulation rate (input) over flush zone
DOBS_FMRR	OTHER	1DP	l/min		Flushing medium recovery rate over flush zone
DOBS_REM	OTHER	X			Remarks
FILE_FSET	OTHER	X			Associated file reference (e.g. drilling journals or log files)
DOBS_METH	OTHER	X		since 4.2	Measurement method