FREEING WELLBORE GEOMETRY

INITIAL ACTION:

0 2 1. If sticking occurred while moving up, apply

0 2 torque and jar DOWN with maximum trip load.

0 2

0 2 If sticking occurred while moving down, do not

0 0 apply torque and jar UP with maximum trip load.

2. Stop or reduce circulation when cocking the jar

0 2 and when jarring down.

0 2

2 0 NOTE: Pump pressure will INCREASE the hydraulic jar

up-blow, DECREASE the down-blow.

0 2 3. Continue jarring until the string is free or an

0 2 alternative decision is made. Jarring for 10+

2 0 hours may be necessary.

SECONDARY ACTION:

2 2

0 0 Spot acid if stuck in limestone or chalk. Spot

0 0 fresh water with mobile salt.

WHEN THE STRING COMES FREE:

INSTRUCTIONS:

1. Increase circulation to maximum rate, rotate and

1. Answer the shaded questions by circling all the numbers in the row with the work the string.

correct answer.

2. Ream/backream the hole section thoroughly.

2. Add the columns, the column with the highest total number indicates the

sticking mechanism. 3. Circulate the hole clean.

STUCK WHILE MOVING DOWN

INITIAL ACTION:

ACTION TO ESTABLISH CIRC: ACTION TO ESTABLISH CIRC: 1. Circulate at maximum allowable rate.

1. Apply low pump pressure (200 - 400 1. Apply low pump pressure

psi). Maintain pressure if restricted (200 - 400 psi). Maintain 2. Work MAXIMUM limit torque down to the stuck

circulation is possible. pressure if restricted depth and hold the torque in the string.

circulation is possible

2. DO NOT JAR UP!!! DO NOT 2. DO NOT JAR DOWN!!! DO 3. Stop or reduce pump speed to minimum.

APPLY TORQUE!!! Slack off to NOT APPLY TORQUE!!!MAXIMUM set down weight. Allow Apply MAXIMUM overpull to 4. Slack off to MAXIMUM set down limit.

sufficient time for a hydraulic jar to jar. Allow sufficient time for a

trip (4 - 6 min for long cycle, see jar hydraulic jar to trip (4 - 8 min 5. Allow sufficient time for a hydraulic jar to trip

manual). for long cycle, see jar (4 - 6 min for long cycle, see jar manual).

manual).

3. If the string does not come free, DO 3. If the string does not come 6. If the string does not come free, hold torque in

NOT JAR UP!! Jar down until the free, DO NOT JAR DOWN!! the string and continue jarring down with

string is free or an alternative decision Jar up until string is free or maximum trip load.

is made. Jarring down for 10+ hours an alternative decision is

may be required. made. Jarring up for 10+ SECONDARY ACTION:

hours may be required. If the string does not come free after 5 to 10 jar

WHEN CIRC. IS ESTABLISHED: WHEN CIRC. IS ESTABLISHED: blow, continue jarring while preparing a pipe

1. Slowly increase pump speed to 1. Slowly increase pump speed releasing pill.

maximum rate. When possible, work to max rate. When possible

the string and circulate the hole clean work the string and circ the WHEN THE STRING IS FREED:

from bit depth. hole clean from bit depth.

2. Ream the section until the hole is 2. Ream the section until the 1. Rotate and work the string.

clean. hole is clean.

3. If POOH to log and/or run casing, 3. Continue RIH until excessive 2. Circulate at maximum rate to clean the hole.

return to bottom and circulate the hole set down weight is observed,

clean. circulate the hole clean. 3. Check for proper mud specifications.

FREEING DIFFERENTIAL

or WITH PIPE STATIC

STUCK PIPE MECHANISM

2

0

1

Pipe Motion Prior

Sticking?

Moving Up

Rotating, Up

Moving Down

Pack-off/ Bridge Differential W/Bore Geometry

0

2

Circ Impossible

TOTALS

Circ Pressure After

Sticking?

Down Free

Dn Restricted

Dn Impossible

Pipe Rotation After

Sticking?

Rot Restricted

Rot Impossible

Rotate Free

FREEING PACK-OFF / BRIDGING

STUCK WHILE MOVING UP

2

0

0

2

2

Circulation Free

Circ Restricted

0

STUCK PIPE FREEING WORKSHEET

0

1

0

Rotating, Down

Static

Pipe Motion After

Sticking?