Coiled Tubing "Wait and Weight" Well Kill Worksheet

Coiled Tubing Operations

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General Rules:
Round up if the number is greater than .5
Round down if the number is less than .5
Kill mud weight is always calculated to the Top Perforation.
Kill mud volume is always calculated to the Bottom Perforation.
True Vertical Depth (TVD) is always used for Hydrostatic Pressure (HP) calculations.
Measured Depth (MD) is always used for Volume and Displacement calculations.

Applied Rules:
Barrels (bbls) are rounded to the nearest tenth (1.26 is rounded to 1.3 bbls)/(1.23 is rounded to 1.2 bbls)
Capacities and Displacements (bbls/ft) are rounded to five decimal places (0.000392 is rounded to 0.00039)
Fluid densities or mud-weights (ppg) - Round up to one decimal place (10.25 is rounded to 10.3)
Feet (ft) are rounded to the nearest whole number (2,000.5 is rounded to 2,001)/(2,000.4 is rounded to 2,000.0)
Pressure in psi is rounded to the nearest whole number (14.7456 is rounded to 15psi)/(1.454 is rounded to 14 psi)
Integrity Mud Weight or MAMW (Maximum Allowable Mud Weight)(ppg) - Do not round up
Kill Mud Weight (KMW)(ppg) - Round up to next tenth. (12.023 is rounded to 12.1)

Workshop Instructions Rounding Rules

Wait and Weight Well Data
Pre-Recorded Information
Coiled Tubing
*Coiled Tubing Data* -OD: 2" -I.D.: 1.688 -Wall Thickness: 0.156" -Capacity: 0.00274bbls/ft -Burst pressure: 6800psi
Production Tubing
*Production Tubing Data:* OD: 5" ID: 4.276 Capacity: 0.01776bbls/ft Capacity CT/TBG: 0.01388bbls/ft
CASING
*N/A*
PUMPS
*Use Pump #1 to kill the well at 2bbls/min* Pump #1: Barrels per stroke: 0.106 Low test pressure (PT1): 300psi High test pressure (PT2): 5000psi Pre-kill Circulating Pressure: @2bbls/min = 1400psi @3bbls/min = 2600psi Pump #2: Barrels per stroke: 0.106 Low test pressure (PT1): 300psi High pressure (PT2): 5000psi Pre-kill Circulating Pressure: @2bbls/min = 1400psi @3bbls/min = 2600psi
FLUID
Workover fluid: 12.2ppg
SHUT-IN PRESSURES
Shut-in Coiled Tubing Pressure - 200psi Shut-in Wellhead Pressure - 400psi
Lengths
Coiled Tubing Length on surface - 4460' Coiled Tubing length in well - 5540' Total Coiled Tubing Length - 10000' Production Tubing MD/TVD - 5540'

Coiled Tubing W&W Killsheet

Equipment Data

1). Coiled Tubing Data

Equipment Data

2). Production Tubing Data

Equipment Data

Well Kill Information

Pressure Parameters

1). Maximum Allowable Working Pressure of Coiled Tubing (Internal)

	*		=
TGB BURST PRESSURE		SAFETY FACTOR		MAWP TPG.

Pump #1

3). Low Test Pressure	=		4). High Test Pressure	=
		PT-1 PRESSURE			PT-2 PRESSURE

Pump #2

5). Low Test Pressure	=		6). High Test Pressure	=
		PT-1 PRESSURE			PT-2 PRESSURE

Enter your data in this box.
Green border indicates correct answer
Red border indicates incorrect answer

Pre-Kill Circulating Pressure (Pump #2)

1). Kill Weight Mud Requirements

2). Initial Circulating Pressure (ICP1) Guide Arch to Bit

3). Final Circulating Pressure (FCP) = KMW at the Bit

4). Initial Circulating Pressure (ICP2) = When Kill Fluid is at Guide Arch

5). Volume from Pump to Guide Wellhead

6). Volume from Wellhead to Bit

7). Volume Surface to end of CT

A). Volume between CT and Tubing

8). Volume from Bit to Surface

9). Total Volume and Time from the Pump back up to the Surface "Surface to Surface"

Barrels

Instructions: Divide the CTLS by 5.
Add this amount to each step until you reach CTLS.

CT Pressure

Instructions: Subtract ICP1 from ICP2.
Divide by 5 and add this amount to each step until you reach ICP2.

Volumes

Instructions:

Step #1: Subtract CTLS from Total Vol. to Bit.
Divide by 5 and add this amount to each step until you reach Total Vol. to Bit.

Step #2: Subtract Total Vol. to Bit from TOTAL KILL VOL.
Divide by 5 and add this amount to each step until you reach TOTAL KILL VOL.

CT Pressure

Instructions: Subtract FCP from ICP2.
Divide by 5 and subtract this amount from each step until you reach ICP2.

Well Data

Well Name:

Completed By:

Pre-recorded Information

Equipment Data

1). COILED TUBING

OD	WALL	ID	Total Length	Cap. BBLS/FT
2). PRODUCTION TUBING

OD	ID	Cap. BBLS/FT	MD	TVD
3).CASING

OD	ID	Cap. BBLS/FT	MD	TVD
4).OPEN HOLE			5). ANNULAR CAPACITIES

ID	Cap. BBLS/FT	MD/TVD	CT/TBG/ BBLS/FT	CT/CSG/ BBLS/FT	CT/OH/ BBLS/FT
4).BOTTOM HOLE ASSEMBLY

OD	ID	LENGTH	Cap. BBLS/FT	WGT.-LBS/FT	BIT SIZE OD
7).PUMP SPECS		8).ACTIVE FLUID SYSTEM

BBLS/STK	BBLS/MIN	FLUID DENSITY PPG	TANK VOL. BBLS

Pressure Parameters

1). MAXIMUM ALLOWABLE WORKING PRESSURE OF COILED TUBING (Internal)
	x	0.80	=
TBG BURST PRESSURE		SAFETY FACTOR		MAWP TPG.
2). MAXIMUM ALLOWABLE WORKING PRESSURE OF THE CASING (Internal)
	x	0.70	=
CASING BURST PRESSURE		SAFETY FACTOR		MAWP CSG.

3). Low Test Pressure - Pump #1 Level 1 (PT-1)		4). High Test Pressure - Pump #1 Level 2 (PT-2)

5). Low Test Pressure - Pump #2 Level 1 (PT-1)		6). High Test Pressure - Pump #2 Level 2 (PT-2)

Pre-Kill Circulating Pressure (PKCPpsi)

		↔ PUMP #1
RATE	PRESSURE		RATE	PRESSURE

		↔ PUMP #2
RATE	PRESSURE		RATE	PRESSURE

Coiled Tubing
"Wait and Weight"
Well Kill Worksheet

16770 Imperial Valley Dr. Suite 290
Phone: +1-713-849-7400
Fax: +1-713-849-7474
[email protected]

www.wellcontrol.com

Well Kill Information

SCITP	SIWP
KICK VOLUME	KICK TYPE

KMW	ICP1
ICP2	FCP
CTLT
CTLW	CTLS
ANNULARVOLUME
TOTAL KILLVOLUME

BARRELS	CT PRESSURE	BARRELS	CT PRESSURE
START 0	ICP1	CTLs	ICP2




CTLs	ICP2	Total Vol. to Bit	FCP
		BOTTOMS-UP	\|
			\|
			\|
			\|
		Total Kill Volume

SCITP - Shut-in Coiled Tubing Pressure

PMW - Present Mud Weight

KMW - Kill Mud Weight

PKCP - Pre-Kill Circulation Pressure

CTLT - Coiled Tubing Length Total

CTLS - Coiled Tubing Length Surface

CTLW - Coiled Tubing Length Well

ICP1 - Initial Circulating Pressure

ICP2 - Initial Circulating Pressure (kill fluid at guide arch)

FCP - Final Circulating Pressure (kill fluid at bottom of coiled tubing string/well)

Calculations Worksheet

1). Kill Weight Mud Requirements
	÷	0.052	÷		+		=
SICTP				TVD TO BIT		PMW		KMW
2). Initial Circulating Pressure "First" (ICP1) Guide Arch to Bit
	+		=
SICTP		PKCP		ICP1
3). Final Circulating Pressure (FCP) = KMW at the Bit
	x		÷		=
PKCP psi		KMW ppg		PMW ppg		FCP psi

4). Initial Circulating Pressure "Second" (ICP) = When Kill Fluid is at Guide Arch

(

)

FCP

PKCP

CTLT

CTLS

ICP1

ICP2

Coiled Tubing Volumes

5). Volume from Pump to Guide Wellhead
	*		=		/		=
Cap. BBLS/FT		CTLS FT		Vol. CTLS BBLS		BBLS/STKS		STKS
6). Volume from Wellhead to Bit
	*		=		/		=
Cap. BBLS/FT		CTLW FT		Vol. CTLW BBLS		BBLS/STKS		STKS
7). Volume Surface to End of CT
	+		=		/		=
Vol. to Wellhead		Vol. Wellhead to BIT		TOTAL Vol. to Bit		BBLS/STKS		STKS

Annular Volumes

A). Volume between CT and Tubing				Input #1	B). Volume between CT and Casing				Input #2
	*		=			*		=
LENGTH CT in TBG		Cap. BBLS/FT		VOLUME CT vs TBG	LENGTH CT in CSG		Cap. BBLS/FT		VOLUME CT vs CSG
C). Volume between CT and Open Hole				Input #3	D). Volume between BHA and Hole				Input #4
	*		=			*		=
LENGTH CT in OH		Cap. BBLS/FT		VOLUME CT vs OH	LENGTH BHA in OH		Cap. BBLS/FT		VOLUME BHA vs HOLE

8). Volume from Bit to Surface
	+		+		+		=
Input #1		Input #2		Input #3		Input #4		Vol. BIT to SFC.
9). Total Volume and Time from the Pump back up tp the Surface "Surface to Surface"
	+		=		÷		=
TOTAL Vol. to Bit		Vol. BIT to SURFACE		TOTAL Vol. from PUMP to SURFACE		Bbls per Minute		Total Time (minutes)


OD inches	Wall inches	ID inches	Total Length	Cap. bbls/ft


OD inches	ID inches	Cap. bbls/ft	MD	TVD

5). Annular Capacities	7). Pump Specs	8). Fluid Density

CT/TBG/ bbls/ft	bbls/stk	ppg


RATE 1	PRESSURE 1	RATE 2	PRESSURE 2


RATE 1	PRESSURE 1	RATE 2	PRESSURE 2

Use units of measurement (ft., bbls., ppg, psi, etc.) to qualify your answers.

Well Kill Information

Pressure Parameters

Pre-Kill Circulating Pressure (Pump #1)

Pre-Kill Circulating Pressure (Pump #2)

1). Kill Weight Mud Requirements

2). Initial Circulating Pressure (ICP1) Guide Arch to Bit

3). Final Circulating Pressure (FCP) = KMW at the Bit

4). Initial Circulating Pressure (ICP2) = When Kill Fluid is at Guide Arch

5). Volume from Pump to Guide Wellhead

6). Volume from Wellhead to Bit

7). Volume Surface to end of CT

A). Volume between CT and Tubing

8). Volume from Bit to Surface

9). Total Volume and Time from the Pump back up to the Surface "Surface to Surface"

Barrels

CT Pressure

Volumes

CT Pressure

	+		=		÷		=
TOTAL Vol. to BIT		Vol. BIT to SURFACE		TOTAL Vol. from PUMP to SURFACE		Bbls per Minute		Total Time (minutes)

	*		÷		=
PKCPpsi		KMWppg		PMWppg		FCPpsi

	*		=
Cap. bbls/ft		CTLSFT		Vol. CTLS bbls

	*		=
Cap. bbls/ft		CTLWFT		Vol. CTLW bbls