MACP and Well Control Record

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8 5/8 3200

3200

19.23 1811

Mud Wt. Mud Grad. MACP Mud Wt. Mud Grad. MACP Mud Wt. Mud Grad. MACP Mud Wt.

ppg psi ppg psi ppg psi ppg

8.40 0.437 1802 9.40 0.489 1636 10.40 0.541 1469 11.408.50 0.442 1786 9.50 0.494 1619 10.50 0.546 1453 11.508.60 0.447 1769 9.60 0.499 1603 10.60 0.551 1436 11.608.70 0.452 1752 9.70 0.504 1586 10.70 0.556 1420 11.708.80 0.458 1736 9.80 0.510 1569 10.80 0.562 1403 11.808.90 0.463 1719 9.90 0.515 1553 10.90 0.567 1386 11.909.00 0.468 1702 10.00 0.520 1536 11.00 0.572 1370 12.009.10 0.473 1686 10.10 0.525 1519 11.10 0.577 1353 12.109.20 0.478 1669 10.20 0.530 1503 11.20 0.582 1336 12.209.30 0.484 1652 10.30 0.536 1486 11.30 0.588 1320 12.30

Insufficient Mud Density Drilling BreakImproper Hole Filling Mud Contamination After Drilling a metre or less into a porous Zone

Swabbing Erratic Table Torque Prior to Tripping the Drilling StringLost Circulation Variation in String Force While Tripping (any Warning Signs)

Mud Contamination Variation in Pump Pressure or Pump Speed After POOH 5% of D.P. StandsEquipment Failure Pit Gain or Loss Half Way OutAbnormal Pressure Loss Circulation At the Last D.P. Stand Before D.C.

Hole Does not Take Correct Fill-up Volume While Out of the Hole every 30minPipe Pulls Wet After Pulling Dry When in Doubt !!!

1 Position Tool Joint at Table, Release Elevators2 Install Stabbing Valve Open, then Close3 Install Kelly, Open Stabbing Valve4 Open HCR Valve to an Open Choke & Degasser5 Close Hydril6 Close Choke Slowly7 Record: SICP, SIDPP & Pit gain every 2min.8 Do not Exceed MACP

TIME TIME TIME

NOTES:

MAXIMUM ALLOWABLE CASING PRESSUREWell Name: Location: Rig: Engineer:

Casing Size, in Vertical Csg Shoe Depth, ft Leak Off Gradient, psi/ft

Well MTD, ft Well TVD, ft Csg Shoe Frac Press, psi

Csg Shoe Fracture Mud Wt. ppg MACP with WATER filled Csg, psi

psi/ft psi/ft psi/ft

CAUSES of KICKS WARNING SIGNS FLOW CHECKWhile Drilling (Any Warning Signs)

FLOW CHECK PROCEDURESCALL ALERT ( If while Out of the Hole Proceed from: Ensure Hole is Full… )

Hoist Kelly above R. Table and shut-off the pump. (If Tripping, position tool joint above table, install Stabbing Valveproperly, Ensure Hole is Full and Shut off Hole fill pump.) Divert flow to Trip tank. Zero trip tank volume indicator.Monitor tank for flow for 5 to 10 minutes. If the Well is Flowing Shut it in Immediately. Record any Trip tank Gains.

PROCEDURES FOR SOFT SHUT-IN THE WELLCALL ALERT

While Drilling While Tripping1 Position Kelly Above Table2 Shut off Mud Pump3 Open HCR Valve to an Open Choke & Degasser4 Close Hydril5 Close Choke Slowly6 Record: SICP, SIDPP & Pit gain every 2min.7 Do not Exceed MACP

Personnel on Location, No SHUT-IN WELL DATA Baryte on Location, sacks

Total MTD, ft TVD, ft Mud Wt. ppg Baryte to Order, sacks

Mud Viscosity: Total Circ. Mud Volume, BBLs Other Mud Chem. to Order:D.P.P. psi C.P. psi Pit Gain bbls D.P.P. psi C.P. psi Pit Gain bbls D.P.P. psi

L7

Average LOG = 0.80 psi/ft or Actual Leak Off Gradient = (((Surface Applied Pressure psi) + Hydrostatic Pressure to the Shoe psi) / Csg Shoe Depth ft).

E8

After printing and posting, you can enter the values for Well MTD & TVD with a pen as needed.

K8

Ignoring the hydrostatic pressure of the gas, the calculated MACP for a Gas filled Annulus is equal to Csg Shoe Fracture Pressure.

C13

Normally, you enter here 8.40. If an additional MACP table is required, then (after you print the first table) you can enter here 12.40 (for ppg Mud Wt.) and print again. Actually, you can enter here any starting Mud Wt. you wish.

E54

Enter Well MTD & TVD on the table at the top of the page, or with a pen after printing.

99-11-23

1.00

Mud Grad. MACP

psi

0.593 13030.598 12860.603 12700.608 12530.614 12360.619 12200.624 12030.629 11870.634 11700.640 1153

After Drilling a metre or less into a porous ZonePrior to Tripping the Drilling StringWhile Tripping (any Warning Signs)

After POOH 5% of D.P. StandsHalf Way Out

At the Last D.P. Stand Before D.C. While Out of the Hole every 30min

When in Doubt !!!

Position Tool Joint at Table, Release Elevators Install Stabbing Valve Open, then Close Install Kelly, Open Stabbing Valve Open HCR Valve to an Open Choke & Degasser

Record: SICP, SIDPP & Pit gain every 2min.

Date:

psi/ft

LOW CHECKWhile Drilling (Any Warning Signs)

position tool joint above table, install Stabbing Valvensure Hole is Full and Shut off Hole fill pump.) Divert flow to Trip tank. Zero trip tank volume indicator.

Record any Trip tank Gains.

ripping

Baryte on Location, sacks

Baryte to Order, sacks

C.P. psi Pit Gain bbls

TIME Pump Strokes TIME Pump Strokes

1 31

2 32

3 33

4 34

5 35

6 36

7 37

8 38

9 39

10 40

11 41

12 42

13 43

14 44

15 45

16 46

17 47

18 48

19 49

20 50

21 51

22 52

23 53

24 54

25 55

26 56

27 57

28 58

29 59

30 60

GENERAL PROBLEM DRILL PIPE PRESSURE CASING PRESSURE PUMP SPEEDPARTIAL CIRCULATION LOSS MAJOR DECREASE DECREASE INCREASE

TOTAL CIRCULATION LOSS MAJOR DECREASE MAJOR DECREASE INCREASE

DRILLSTRING WASHOUT MAJOR DECREASE NO CHANGE INCREASE

WELL PLUGGED NOZZLE MAJOR INCREASE NO CHANGE DECREASE

CONTROL CHOKE WASHOUT MAJOR DECREASE MAJOR DECREASE INCREASE

METHODS CHOKE PLUGGING MAJOR INCREASE MAJOR INCREASE DECREASE

PROBLEM SOLUTION

WELL CONTROL RECORD SHEET Well TD ft Well TVD ft Slow Pump Pressure psi

MACP (Orig. Mud Wt.) psi MACP (Kill Mud Wt.) psi Slow Pump Speed Strokes/min

P. Strokes to Bit: to Csg Shoe: to Surface: Total H. Strokes: Total C. Strokes:

D.P.P. psi C.P. psi Pits Vol. bbls D.P.P. psi C.P. psi

PROBLEMS AND SIGNS

FOR ALL

SIGNS (Mainly for Driller's Method First Step)

DPP INCREASES DRASTICALLY. CP REDUCES SLIGHTLY AND PUMP SPEED DECREASE.

PLUGGED NOZZLE

DPP INCREASES: SLOWLY IF ABOVE GAS, RAPIDLY IF BELOW GAS. CP DECREASES AND FLUCTUATES. PUMP SPEED DECREASES SLOWLY.

FLUID RETURNS DECREASE. FLARE DECREASE OR DIES.

DPP DECREASES.CP AND PUMP SPEED REMAIN THE SAME OR INCREASE SLIGHTLY.

UNPLUGGED NOZZLE

BRIDGE

SHUT DOWN AND RE-ESTABLISH ACCURATE SHUT-IN PRESSURES, THEN RE-ESTABLISH NEW CIRCULATING

PRESSURES.

DPP AND CP DECREASE EQUALLY.PUMP SPEED RETURNS TO NORMAL.

UNPLUGGED CHOKE

PLUGGEDCHOKE

TRY WORK/FREE PIPE WITHOUT APPLYING EXCESSIVE PUMP PRESSURE.

RE-ESTABLISH LAST ACCURATE CP AND MAINTAIN NEW REDUCED DPP.

SHUT-IN WELL. SWITCH CHOKES. ESTABLISH NEW CIRCULATING PRESSURES. ISOLATE PLUGGED CHOKE.

CORRELATE PRESSURE GAUGES.

DPP AND CP INCREASE CONTINUALLY. PUMP SPEED DECREASES SLIGHTLY.

NO TANK INCREASE. FLARE GOES OUT IF GAS TO SURFACE.

SHUT-IN WELL. SWITCH CHOKES.ESTABLISH NEW CIRCULATING PRESSURES.

G2

Enter Well MVD & TVD on the MACP page, or with a pen after printing.

J4

Total Hole Strokes, from surface to surface (from the floor to the bit and up the annulus to the surface).

L4

Total Circulating Mud System (Mud in Hole + Mud in the Mud Tanks)

B43

Most information here is taken from the Pits Second Line Supervisor's Well Control (1998) manual.

DPP AND CP DECREASE EQUALLY.PUMP SPEED RETURNS TO NORMAL.

UNPLUGGED CHOKE


PUMP SPEEDINCREASE

INCREASE

INCREASE

DECREASE

INCREASE

DECREASE

SOLUTION

Pits Vol. bbls

SHUT DOWN AND RE-ESTABLISH ACCURATE SHUT-IN PRESSURES, THEN RE-ESTABLISH NEW CIRCULATING

PRESSURES.

TRY WORK/FREE PIPE WITHOUT APPLYING EXCESSIVE PUMP PRESSURE.

RE-ESTABLISH LAST ACCURATE CP AND MAINTAIN NEW REDUCED DPP.

SHUT-IN WELL. SWITCH CHOKES. ESTABLISH NEW CIRCULATING PRESSURES. ISOLATE PLUGGED CHOKE.

CORRELATE PRESSURE GAUGES.



Documents

MACP and Well Control Record