13A HPHT Procedure Presentation 20130420

8/9/2019 13A HPHT Procedure Presentation 20130420

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HPHT ProceduresObjective: Obtain enough knowledge of typical HPHT procedures

used, to allow the experienced drill crew to ask the right criticalquestions, before and during operation in the HPHT section, in order

to operate safely.


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20 April 2013


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DRILLING PARAMETERS

CONSTANT DRILLING PARAMETERS

RPM

SPMWOB


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DRILLING PARAMETERS MUD LOGGER RIG SYSTEM

MONITORED CONTINUOSLY

DISCREPANCY

THOROUGHLY INVESTIGATE

A FAILURE OF DRILLING INSTRUMENTATION COULD BE CAUSE FOR THE

SUSPENSION OF OPERATIONS, IF THERE IS NOT A SUITABLE ALTERNATIVE

MEANS OF MONITORING THE PARAMETERS AFFECTED.


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MWDLWD

PWDVerify temperature

Static and dynamic pressures downhole

Getting a ”picture” of downholeCompare with modeling of:

Swab

Surge

MW behavior

SURVEY PRIOR TO CONNECTION


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SURVEY PRIOR TO CONNECTION

by stopping rotation and bringing the pumps down to suitable pump rate required without

shutting down the pumps. (Verify best option with MWD operator)

Bring the pumps back up to drilling pump rate and pump up survey.

Once survey has been obtained, continue with connection procedure.

Advantage:

This will avoid having 2 pump off gas in annulus at the same time.

Start pumps in the best way for the well.

Can take SCR’s on each connection.

Disadvantage:Downhole tools might require different approach

Off bottom for longer time


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1. Inform Mud Loggers prior to making a connection.

2. Ream as required.

3. Take torque measurements, stop rotation, and record drag measurements.

4. Shut down the rig pumps, allowing appropriate time for flow back to the active. Ensure the Mud Logger's screen

on the drill floor is displaying the active tank graph, and that backflow trend is fingerprinted. Line the well up on

trip tank, and start trip tank pump, with Mud Logger’s screen displaying same.

5. (When CFM show the well is stable continue with connection)If the well appear to be flowing or you are in doubt- shut the well in.

6. Make up next stand.

7. (Note trip tank volume and compare graph with previous connection graphs. If no anomalies observed, stop trip

tank pump and open to flow line.)

If the well appear to be flowing or you are in doubt- shut the well in.

8. (be aware of PP vs FG and decide on pump or not)

9. Rotate drill string slowly and bring one pump up to 10 spm until returns are observed at the shakers, then

slowly bring this pump up to operating strokes. Bring the remaining pumps up to operating strokes until full flowrate has been reached. Increase rotation to drilling RPM, inform the Mud Logger, and resume drilling as per

procedure. Obtain reading from PWD to establish Low/High result from connection.

CONNECTIONS AND DUMMY CONNECTIONS without driling stand

"Dummy" connection gas is a “pumps-off” event and must still be circulated out of the

well before the next connection is made


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1. Inform Mud Loggers prior to making a connection.

2. Ream as required and pump back the drilling stand.

3. Take torque measurements, stop rotation, and record drag measurements.

4. With the full drilling stand above the rotary table, shut down the rig pumps, allowing appropriate time for flow

back to the active. Ensure the Mud Logger's screen on the drill floor is displaying the active tank graph, and

that backflow trend is fingerprinted.

5. Line the well up on trip tank, and start trip tank pump, with Mud Logger’s screen displaying same.

6. Close bottom drilling stand FOSV as a mud saver, close TDS IBOP, break out the drilling stand and rack back

same.7. Make up next stand.

8. Slowly lower the drill string. Avoid surging the formation.

9. Make up drilling stand. Open TDS IBOP valve and open lower drilling stand FOSV.

10.Note trip tank volume and compare graph with previous connection graphs. If no anomalies observed, stop trip

tank pump and open to flow line.

If the well appear to be flowing or you are in doubt- shut the well in.


12.Rotate drill string slowly and bring one pump up to “1 bbl/min” until returns are observed at the shakers, then

slowly bring this pump up to operating strokes. Bring the remaining pumps up to operating strokes until full flow

rate has been reached. Increase rotation to drilling RPM, inform the Mud Logger, and resume drilling as per

procedure. Obtain reading from PWD to establish Low/High result from connection.

Suggest a dummy connection once while drilling down stand. (EI part 17, volume 2 )

CONNECTIONS AND DUMMY CONNECTIONS with Drilling stand


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1. Inform Mud Loggers and MPD operator prior to making a connection.

2. Back ream as required, take torque and drag measurements.

3. Pump back Drilling Stand.

4. Shut down the rig pumps in agreement with MPD operator starting up “back up pressure pump”. Ensure Stand

pipe pressure is zero before closing lower FOSV on drilling stand and breaking out TDS. Back pressure pump

on T/T or Active.

5. Rack back Drilling stand, make up new stand.

6. Run it in hole. Good communication with MPD.

7. M/U Drilling stand, open lower FOSV. Ensure volumes are within acceptable limits for connection.

If volumes are not acceptable or you are in doubt- shut the well in.


9. Rotate drill string slowly and bring one pump up to 10 spm in corporation with MPD operator and verify system

integrity, then slowly bring this pump up to operating strokes. Bring the remaining pumps up to operating

strokes until full flow rate has been reached. Increase rotation to drilling RPM, inform the Mud Logger, andresume drilling as per procedure.

Obtain reading from PWD to establish Low/High result from connection. The readings will be under

influence of surface pressure and will have to be corrected to give ESD.

The key is communication and training.

CONNECTIONS AND DUMMY CONNECTIONS-

Having MPD and RCD installed, using Drilling Stand.


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A RATE OF MUD FROM OR TO THE WELL, AS MEASURED BY THE RIG AND

THE MUD LOGGERS, TO THE TRIP TANK, THAT DOES NOT REQUIRE ANY FURTHER

ACTION. NORMAL OPERATION MAY PROCEED.

MINIMUM 30 MINUTES (used in the Norweign sector)DECREASING TREND OF FLOW

IN LINE WITH EXPECTED THERMAL EFFECT

FOLLOWS TREND OF PREVIOUS FLOW CHECKS

MAX. 25-50% OF KICK MARGIN IN LOSS/GAIN

MUD COOLER/HYDRAULIC SIMULATION

All flow checks on Trip Tank

ACCEPTABLE FLOW CHECK


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FLOW CHECKWELL STABILITYBEFORE PUMPING OUT OF HOLE

CASING SHOE

TOP/BOTTOM OF MUD CAP

PRIOR TO PULLING BHA

INCORRECT MUD VOLUME while tripping

TOP OF LINER

DYNAMIC FLOWCHECK- lets talk.

If in doubt- shut the well in and observe pressures.

Run or strip back to bottom and circulate bottoms up.

Assess gas levels and evaluate to circulate the

last 3000 (MD flowcheck 1500m- circ through choke )

ft through choke.


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FLOW CHECKPROCEDURE

CONNECTION AT RIG FLOOR

(space out for Annular or Pipe ram)

STATIC FLOW CHECK TO TRIP TANK

PLOT EVERY MINUTE

DRILLER AND MUD LOGGER RECORD VOLUME CHANGES

INFORM DSV AND TP

IF IN DOUBT, SHUT IN THE WELLThis takes MPD out of the loop , but you st i l l have to veri fy the BOP is not leaking


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Suggested

FLOW CHECK PROCEDUREwith RCD installed

• CONNECTION AT RIG FLOOR

(space out for Annular or Pipe ram)

• DRILLER STOP PUMPS AS ON CONNECTIONS TOGETHER WITH @BALANCE

USING BACK PRESSURE PUMP TO MAINTAIN BHP CONSTANT.

(If possible line up on Trip Tank)

• IN STEPS OF X PSI, REDUCE SURFACE PRESSURE AND MONITOR SURFACE VOLUME

HOLD PRESSURE FOR 5 MINUTES OR AS PR FINGERPRINTING

• DRILLER AND MUD LOGGER RECORD VOLUME CHANGES AND FLOW

THE DRILLER WILL SHUT THE WELL IN IF ANY SIGN ON FLOW

• INFORM DSV AND TP

• STATIC OVERBALANCE WITH NO PRESSURE ON SURFACEAND ACCEPTABLE FLOWCHECK.

IF IN DOUBT, SHUT THE WELL INThis takes MPD out of the loop , but you st i l l have to ver i fy the BOP is not leaking


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FLUSHING CHOKE AND KILL LINE WITH MPD INSTALLED.

• Purpose is to get fresh mud in the hoses to avoid sagging

• Challenge is to flush the lines, while maintaining additional pressure on the well,

and maintaining volume control.

• It has to be well, rig and equipment specific.

• Pump from above or below maintaining ECD, or after Flowcheck.


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Establishing Circulation with risk

of breaking down formationIt only takes one....

The PWD is capable of providing maximum and minimum annular

pressures can be provided after pumps off events.

Review the information available after any trip to see if the surge

pressures created during the trip are acceptable.

If not, adjust the procedure and check for an improvement.

Hydraulics calculations shall be updated every 12 hours or

when mud properties has changed

Realistic modeling of swab/surge/temperature/ECD are necessary

for knowing your well.

1. Start with 25 GPM.

2. Break gel by bringing up string rotation stepwise to agreed rpm3. Slow down string rotation to 30 rpm.

4. Increase pump rate stepwise when return is established. Bring

one pump up to planned pump rate before bringing the second

pump on line.

5. Increase string rotation stepwise until planned rotation.

6. The drill string should not be moved while performing these

steps controlling PWD reading for ECD verification.


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PIT DISCIPLINE

Pit discipline is a term used to describe the

system of work whereby no operation that may

affect mud pit levels is commenced,

without the full knowledge of the

Driller,

Mud Engineer,

Derrickman,

Mud Loggers


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1. The Mud Engineer will always produce a written work instruction for the Derrickman, copy to

Driller, TP and Mud Logger.2. When drilling ahead, adding premix/water/base oil, might be allowed whilst drilling ahead with the

DSV and STP’s permissions provided that:

Fingerprint volume prior to the transfer.

The pit from which the transfer is to be made must be added to the active system PVT.

The only change in volume therefore should be as Fingerprinted before the transfer began.

3. If additions are required and the conditions do not meet the previous criteria or for any other reasons,

the Driller must pick off bottom and circulate until a stabilised pit level has been established.

Once obtained the addition can be done.4. If barite has to be added to the system, then an allowance for the corresponding pit volume change has to

be made. Only light dusting of barite is allowed while drilling after permission from the DSV/TP.

Light dusting means maintaining existing mud weight. (know why it is necessary )

5. The Mud Engineer shall be present at the shakers to monitor bottoms up after trips, flow checks etc.

6. Radio communication system to be available at all times by the Driller, Mud Engineer, Derrickman,

Shaker hand and Mud Loggers.

7. Mud Loggers shall maintain an accurate volume balance sheet stating gain/loss and net result throughouteach section drilled. An updated sheet shall be presented at least 2 times daily and after tripping

in/out of hole.

8. Flow Sensors (rig’s own, rental and third party sensor) should be operational at all times.

9. Mud Coolers to be utilized as required in the 12-1/4”, 8-1/2”, 6-1/2”. (Shut down prior to POOH)

10. Never leave transferring into the active unattended.

11. Inform Driller of change in Shaker screen type, as it might change volume.


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WELL CONTROL: before drilling 9-7/8 Casing

DRILLS:

PIT DRILLS-

TRIP DRILLS-

STRIP DRILLS-

CHOKE DRILLS-

ANNULAR

PREVENTEROPEN

CLOSE

ACCUMULATORBOTTLE

PRECHARGE @ 400 PSI

BALL VALVE


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Well Flow while Drilling

1. P ick off bot tom unt i l the annu lar can be closed and a FOSV isaccess ible above the rotary table.

2 . S top ro tat ing , and then stop the pumps.

3. Close the annular (Hard shut- in).

4 . L ine up t r ip tank and m oni to r for leak ing BOP.

5. Open chok e l ine va lves towards a closed choke.

6. Record t ime and monitor casing pressu re (SICP).

7. Not i fy Tool pus her/Lead Dri l ler and Operators dr i l l ing su pervisor.

8. Close approp r iate FOSV in Dri l l ing Stand and bleed of f pressure above

same to ver i fy f loats/FOSV are hold in g pr essure.

9 . Break connect ion above FOSV.

10.Instal l kick ass embly w ith 15 K hose and L o- Torq’s, and make up TDS on

top.

11.Pressure test hose co nnect ion to max as agreed against clos ed FOSV’s

above and below h ose connect ion .

12.Open FOSV below h ose co nnect ion and FOSV on Dri l l ing Stand.13.Establ ish SIDPP- not n ecessary for c irculat ing ou t the inf lux

14.Circulate out kick/ki l l the wel l accordin g to p rocedure

When the wel l is shut in , the MPD is out of the loop, but you have to ver i fy

that your BOP is not leaking

Glyc ol inject ion c an start at 75% B/U at a rate of 0,5 gpm / 2 lpm

With MPD, they can increase back pressure

immediately and minimize the kick size.


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Well Flow while Tripping

Prepare to kill the well!!!

If a kick occurring when the TDS is not made up to the drill string (e.g. when tripping) the well

shall be shut-in as follows:

1. Set the slips below the top tool joint.

2. Install and close a FOSV.

3. Secure the well by the hard shut in method using annular preventer. Always keep in mind

string weight and wellbore pressure. Consider closing pipe rams to limit upward movement

of the drill string if drill pipe is across BOPs.

4. Open choke line to fully closed choke and monitor annulus pressure.

5. Notify supervisors.6. If pumping is needed:

1. Install kick assembly with 15K hose and make up TDS on top

2. Pressure test hose connection to agreed pressure against closed FOSV’s above and

below hose connection.

3. Open FOSV’s below hose connection.

4. Establish SIDPP- if relevant.

5. Record SICP every 30 seconds.7. Monitor trip tank to detect any annular or ram leaks.

8. Prepare to strip back to bottom if pressures permit.


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HPHT CHECKLISTS

OIM/TP Daily Checklist

DSV Daily Checklist

DRILLER HPHT Tourly Checklist

A/D HPHT Tourly Checklist

DERRICKMAN HPHT Tourly Checklist

CEMENTER HPHT Daily Checklist

MUD ENGINEER HPHT Daily Checklist

MUD LOGGER HPHT Tourly Checklist

1. Prepare nonessentialperson nellist

2. Attend morning meeting

3. Obtaincopyof POAand post

4. Verifydayssince last BOP test

5. Verifydayssince last H2Sdrill

6. Verifydayssince last fire drill

7. Verifydayssince last abandonrig drill

8. Verifysupplyvessel schedule

9. VerifyH2S packageonboard and operational

10. VerifyweeklyH 2S and combustible gassensor test

11. Verifystand byvesselupwind for H 2S

12. Hold pre-tour meeting withthe drillcrew

13. Verifyrig floor killboard incompliance

14.

VerifyDriller / AD/ Derrickmantourchecklist

15. Hourssincelast TDS service

16. Hourssincelast swivelpacking change

17.

Numbersofclosures/ strip drillson annular preventer

18. Verifystocksfrom Barge Engineer

H o le Se c ti o n C e me n tMT

BariteMT

MudMaterials

for M³

DrillWater M³

Glycolgal

umLevelment

rd supplyvessel

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13A HPHT Procedure Presentation 20130420

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