This page, Well Completion Report Codes, is offered by
Massachusetts Department of Environmental Protection

Well Completion Report Codes

Codes used when filling out Well Driller forms.

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General Well Completion Codes

Section 2
Work Performed	Code
Deepen	DP
Hydrofracture	HF
New Well	NW
Repair	RP
Replacement	RE

Section 3
Well Type	Code
Cathodic Protection	CTPR
Domestic	DMST
Domestic/Geothermal	DSGT
Geoconstruction	GCON
Geothermal Open Loop	GTOL
Industrial	INDS
Injection	INJC
Irrigation	IRRG
Public Water Supply	PBWS
Recover	RCVR
Test Wells	TSTW

Section 4
Drilling Method	Code
Air Hammer	AH
Air Rotary	AR
Auger	AG
Cable Tool	CT
Casing Advancement	CA
Core	CR
Direct Push	DP
Drive and Wash	DW
Dug	DG
Mud Rotary	MR
Reverse Rotary	RR
Sonic	SN

Section 5
Overburden Lithology	OB Code	Overburden Color	OB Color Code	Bedrock Lithology	BR Code
Boulders	B	Black	BL	Amphibolite	AM
Clay	CL	Bluish Gray	BG	Basalt	BS
Clean Fill	CF	Brown	BR	Conglomerate/Breccia	CG/BR
Coarse Sand	CS	Dark Gray	DG	Diorite	DI
Cobbles	C	Greenish Gray	OG	Gabbro	GB
Fine Sand	FS	Light Gray	LG	Gneiss	GN
Fine to Coarse Sand	FCS	Reddish Brown	RB	Granite	GR
Gravel	G	Yellowish Brown	YB	Limestone	LS
Medium Sand	MS			Marble	MA
Organics	O			Quartzite	QZ
Sand & Gravel	SG			Rhyolite	RH
Silt	SI			Sandstone	SS
Silty Clay	SICL			Schist	SH
Silty Sand	SIS			Shale	SH
Silty Sand & Gravel	SISG			Slate/Phyllite	SL/PH
Till	T			Pegmatite	PM

Section 6
Surface Seal Type	Code
Cement	CM
Cement/Bentonite	CB
Concrete	CT
None	NO

Section 7
Casing Type	Type Code	Thickness
Certa-Lok	CTL	Schedule 5
Fiberglass	FBG	Schedule 10
Galvanized Pipe	GLP	Schedule 40
HDPE	HDP	Schedule 80
NSF Coated Steel	NCS	Schedules 160
PVC	PVC	SDR 13.5
Stainless Steel	STL	SDR 17
Steel	STL	SDR 21
		SDR 26
		SDR 32.5
		SDR 40
		17#
		19#

Section 8
Screen Type	Screen Code
Carbon Steel	CST
Continuous Wire PVC	CWP
Galvanized Wire Wrapped	GWW
Perforated Pipe	PFP
Pre-pack PVC	PPP
Pre-pack Stainless	PPS
Slotted PVC	SLP
Stainless Steel Vee Wire	SSV
Stainless Steel Well Point	SSP

Section 10
Pump Description	Pump Code	Horsepower
2 Wire Constant Speed Submersible	2WSS	1/2
3 Wire Constant Speed Submersible	3WSS	3/4
3 Wire Variable Speed Submersible	3WVS	1
Constant Speed Submersible Turbine	CSST	1-1/2
Variable Speed Submersible Turbine	VSST	2
Jet	JET	3
Line Shaft Turbine	LST	5
Centrifugal	CENT	7-1/2
		10
		15
		20
		25
		30
		40
		50
		60
		75
		100
		125
		150
		200

Section 11
Annular Seal / Filter Pack	Code	Purpose	Purpose Code	Method of Placement	Method of Placement Code
Bentonite Chips / Pellets	BC	Fill	FL	Gravity	GR
Bentonite / Graphite	BT	Filter	FT	Tremie	TR
Bentonite Grout	BG	Seal	AS	Other	OT
Cement Bentonite Grout	CB
Concrete	CT
Sand	SD
Native Material	NM
Pea Gravel / Gravel	GR

Section 13
Well Test Method	Method Code
Air Blow with Drill Strem	AB
Air Lift	AL
Bailing	BL
Constant Rate Pump	CR
Variable Rate Pump	VR
Slug	SG

Monitoring Wells

Section 2
Work Performed	Code
Deepen	DP
Hydrofracture	HF
New Well	NW
Repair	RP
Replacement	RE

Section 4
Drilling Method	Code
Air Hammer	AH
Air Rotary	AR
Auger	AG
Cable Tool	CT
Casing Advancement	CA
Core	CR
Direct Push	DP
Drive and Wash	DW
Dug	DG
Mud Recovery	MR
Reverse Rotary	RR
Sonic	SN

Section 5
Overburden Lithology	OB Code	Overburden Color	OB Color Code	Bedrock Lithology	BR Code
Boulders	B	Black	BL	Amphibolite	AM
Clay	CL	Bluish Gray	BG	Basalt	BS
Clean Fill	CF	Brown	BR	Conglomerate/Breccia	CG/BR
Coarse Sand	CS	Dark Gray	DG	Diorite	DI
Cobbles	C	Greenish Gray	GG	Gabbro	GB
Fine Sand	FS	Light Gray	LG	Gneiss	GN
Fine to Coarse Sand	FCS	Reddish Brown	RB	Granite	GR
Gravel	C	Yellowish Brown	YB	Limestone	LS
Medium Sand	MS			Marble	MA
Organics	O			Quartzite	QZ
Sand & Gravel	SG			Rhyolite	RH
Silt	SI			Sandstone	SS
Silty Clay	SICL			Schist	SC
Silty Sand	SIS			Shale	SH
Silty Sand & Gravel	SISG			Slate/Phyllite	SL/PH
Till	T			Pegmatite	PM
Urban Fill	UF

Section 6
Surface Seal Type	Code
Cement	CM
Cement/Bentonite	CB
Concrete	CT
None	NO

Section 7
Casing Type	Type Code	Thickness
Certa-Lok	CTL	Schedule 5
Fiberglass	FBG	Schedule 10
Galvanized Pipe	GLP	Schedule 40
HDPE	HDP	Schedule 80
NSF Coated Steel	NCS	Schedule 160
PVC	PVC	SDR 13.5
Stainless Steel	SST	SDR 17
Steel	STL	SDR 21
		SDR 26
		SDR 32.5
		SDR 40
		17#
		19#

Section 8
Screen Type	Screen Code
Carbon Steel	CST
Continuous Wire PVC	CWP
Galvanized Wire Wrapped	GWW
Perforated Pipe	PFP
Pre-pack PVC	PPP
Pre-pack Stainless	PPS
Slotted PVC	SLP
Stainless Steel Vee Wire	SSV
Stainless Steel Well Point	SSP

Section 11
Annular Seal / Filter Pack	Code	Purpose	Purpose Code	Method of Placement
Bentonite Chips / Pellets	BC	Fill	FL	GR: Gravity
Bentonite / Graphite	BT	Filter	FT	TR: Tremie
Bentonite Grout	BG	Seal	AS	OT: Other
Cement Bentonite Grout	CB
Concrete	CT
Sand	SD
Native Material	NM
Pea Gravel / Gravel	GR

Decommissioned Wells

Section 3
Well Type Prior to Decommission	Code
Cathodic Protection	CTPR
Domestic	DMST
Domestic/Geothermal	DSGT
Geoconstruction	GCON
Geothermal Open Loop	GTOL
Industrial	INDS
Injection	INJC
Irrigation	IRRG
Public Water Supply	POWS
Recovery	RCVR
Test Wells	TSTW
Unknown	UNKN

Section 4
Casing Type	Type Code
Certa-Lok	CTL
Fiberglass	FBG
Galvanized Pipe	GLP
HDPE	HDP
NSF Coated Steel	NCS
PVC	PVC
Stainless Steel	SST
Steel	STL

Section 6
Surface Seal	Type Code
Cement	CM
Cement/Bentonite	CB
Concrete	CT
None	NO

Section 7
Decommissioning Material	Code	Purpose	Purpose Code	Method of Placement
Bentonite Chips / Pellets	SC	Fill	FL	GR: Gravity
Bentonite / Graphite	ST	Filter	PT	TR: Tremie
Bentonite Grout	BG	Seal	AS	OT: Other
Cement / Bentonite Grout	CB
Concrete	CT
Sand	SD
Native Material	NM
Pea Gravel / Gravel	GR

Geothermal Wells

Section 2
Work Performed	Code
Deepen	DP
Hydrofracture	HF
New Well	NW
Repair	RP
Replacement	RE

Section 4
Drilling Method	Code
Air Hammer	AH
Air Rotary	AR
Auger	AG
Cable Tool	CT
Casing Advancement	CA
Core	CR
Direct Push	DP
Drive and Wash	DW
Dug	DG
Mud Rotary	MR
Reverse Rotary	RR
Sonic	SN

Section 5
Overburden Lithology	OB Code	Overburden Color	OB Color Code	Bedrock Lithology	BR Code
Boulders	B	Black	BL	Amphibolite	AM
Clay	CL	Bluish Gray	BG	Basalt	BS
Clean Fill	CF	Brown	BR	Conglomerate/Breccia	CG/BR
Coarse Sand	CS	Dark Gray	DG	Diorite	DI
Cobbles	C	Greenish Gray	GG	Gabbro	GB
Fine Sand	FS	Light Gray	LG	Gneiss	GN
Fine to Coarse Sand	FCS	Reddish Brown	RB	Granite	GR
Gravel	C	Yellowish Brown	YB	Limestone	LS
Medium Sand	MS			Marble	MA
Organics	O			Quartzite	QZ
Sand & Gravel	SG			Rhyolite	RH
Silt	SI			Sandstone	SS
Silty Clay	SICL			Schist	SC
Silty Sand	SIS			Shale	SH
Silty Sand & Gravel	SISG			Slate/Phyllite	SL/PH
Till	T			Pegmatite	PM
Urban Fill	UF

Section 8
Casing Type	Type Code	Thickness
Certa-Lok	CTL	Schedule 5
Fiberglass	FBG	Schedule 10
Galvanized Pipe	GLP	Schedule 40
HDPE	HDP	Schedule 80
NSF Coated Steel	NCS	Schedule 160
PVC	PVC	SDR 13.5
Stainless Steel	SST	SDR 17
Steel	STL	SDR 21
		SDR 26
		SDR 32.5
		SDR 40
		17#
		19#

Section 9
Loop / Porter Shroud Material	Material Code
Fiberglass	FBG
Cooper	CUP
HDPE	HDP

Section 12
Annular Seal / Filter Pack	Code	Purpose	Purpose Code	Method of Placement
Bentonite Chips / Pellets	BC	Fill	FL	GR: Gravity
Bentonite / Graphite	BT	Filter	FT	TR: Tremie
Bentonite Grout	BG	Seal	AS	OT: Other
Cement Bentonite Grout	CB
Concrete	CT
Sand	SD
Native Material	NM
Pea Gravel / Gravel	GR

Contact for Well Completion Report Codes

Online

Email Email 310 CMR 46.00 Contact Information at program.director-dwp@mass.gov

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