4-vicksburg rig move guidelines and procedures

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Atwood Offshore Drilling LtdSafety Always

VICKSBURG RIG MOVE

GUIDELINES AND PROCEDURES

RIGMOVE # 129

From

Coastal Energy - Songkhla-G (Thailand)

To

Coastal Energy - Songkhla D (Thailand)

April 2011

DOCUMENT ISSUE RECORD

Rev. Date Status Author Signature Approved Signature

1 19thApril

2012

Review Atwood

P. Roedgaard

Atwood

Tony

Wilson


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TABLE OF CONTENTS

SUBJECT

1. INTRODUCTION

2. PERSONNEL RESPONSIBILITIES

3. PREAMBLE

4. PRE-MOVE PREPARATION

5. SUMMARY OF PLANNED ACTIVITY

6. DEPARTURE FROM SONGKHLA-E, LEG PULLING OPS, TOWROUTE

7. ARRIVAL, POSITIONING, PRELOADING AT SONGKHLA-G

8. TOWING READINESS

9. TOWING SAFETY

10.WEATHER AND OPERATIONAL LIMITS

11.TOW BRIDLE CONNECTION & DISCONNECTION

12.SUPPORT

13.EMERGENCY CONTACT NUMBERS / ROUTINECOMMUNICATION

14.MEDIVAC PROCEDURES

15.MINIMUM MANNING CONSIDERATIONS

1.0 INTRODUCTION

1.1The procedures contained within this document are designed to propose a suitable

methodology for the departure of Vicksburg from Songkhla-G and intended tow

route to Songkhla-D in Thailand. The procedures have been developed and

approved by Atwood and Coastal Energy Management.

1.2These procedures assume the following:-

The reported water depth at Songkhla-G is: 56.4 ft


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Three anchor-handling vessels (AHVS) will be utilized to move off the Songkhla-G

location.

AHVS will be manned to allow 16 hours continuous operation in all respects.

1.4Three AHVs will proceed to the Songkhla-G location for utilization.

1.5The details within this document are guidelines for the planning, preparation andimplementation of procedures associated with this particular VICKSBURG rigmove. For all issues associated with the move, all decisions and actions shalladhere to Atwood accepted methodology and prudent marine practices.

2.0 PERSONNEL RESPONSIBILITIES

The following descriptions of responsibility refer to the key personnel who will be

involved in the VICKSBURG rig move from Songkhla-G location to Songkhla-D.

2.1 THE VICKSBURG OIM

Will have total responsibility for the safety of the rig and personnel at all times, as per

statutory requirements, and will decide when it is safe and practicable to commence

operations within the limitation of the units Operations Manual, having consulted with the

Warranty Surveyor.

The VICKSBURG BARGE MASTER will be responsible for the conduct and safe

operation during the moving off / jacking operations at Songkhla-G and positioning

operations at Songkhla-D

Will ensure the correct placement of competent Atwood personnel to ensure the safe

deployment, handling of vessel tow gear and leg jacking operations.

Will ensure the correct placement of competent Atwood personnel to ensure the safe

deployment, handling of vessel tow gear and leg jacking operations.

Will be responsible for the conduct and safety of the tow and will give instructions to the

towing vessels with regard to tow-wire deployment, passage planning, courses and speeds

after consultation with the Vessel Masters.


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Will ensure the stability of the rig at all times, including making any required adjustments

to trim or heel, as necessary.

Will ensure that all relevant authorities are kept informed by e-mail of the rig move status.

Will ensure that a pre-rig move safety meeting is held onboard prior to commencement of

the tow.

2.2 THE COASTAL ENERGY DRILLING SUPERVISOR

A Coastal Energy drilling supervisor will be onboard the rig for the tow from Songkhla-G

to the Songkhla-DJ.

The Vicksburgwill be responsible for figures for rig and tow boat vessel consumables at

relevant times required by Coastal Energy and document on the Vicksburg IADC.

2.3 RIG POSITIONING SURVEYORS

Will be required for the tow, also a monitor will be required in the Control room, under thecantilever, the main tow boat and AHVs and equipment must be operational.

2.4 RIG MOVE VESSEL MASTERS

Will be responsible for the safety of their vessels and for the safety of the tow. Will be

responsible for ensuring that all towing operations are conducted in a safe manner with due

regard to safe working practices and the practices of good seamanship. Will ensure that all

crews are familiar with and towing operation.

Will use the JSA as a tool for incident prevention and ensuring that all hazards have beenidentified and communicated to the crew prior to each marine operation.

Will ensure that 'Clear Deck' Policy is adhered to during operations.

2.5 WARRANTY SURVEYOR


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For this move, a "pre-move" meeting will be conducted onboard the VICKSBURG in a

timely manner to clarify details and establish responsibilities with the following attendees.

O.I.M.

Rig crew with key responsibilities

Warranty Surveyor

Tow Vessel Captains

3.0 PREAMBLE

3.1 The purpose of this document is to ensure that the 'VICKSBURG' departure, and

approach to the location are conducted in a safe and efficient manner.

3.2The safety of Personnel, Rig, Equipment and ATWOOD / COASTAL ENERGY assets

is of paramount importance and all parties involved in the operation will comply fully

with all safety procedures in place.

3.3 These approved procedures shall be followed as closely as circumstances permit,

having due regard for the limitations of the unit and its assisting vessels. Should any

deviations be necessary, the COASTAL ENERGY Superintendent / OIM and Barge

Master will be advised immediately. They shall initiate the Management of Change

Process (M.O.C.) and get the necessary approvals.

3.4Due considerations must be given to any, and all, effects of such a deviation.

3.5 Prior to the commencement of jacking hull into water, leg freeing, pull off from

location, anchor deployment, pinning of legs, preloading and anchor recovery

operations, weather forecasts shall be obtained which show the operation can be safely

completed without interruption..

3.6All rig move vessels will be issued with a copy of this rig move procedure prior to

departure from Songkhla-G. Vessel Masters will be required to review the procedure

and comment accordingly.


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3.7 Prior to commencement of operations, the 'VICKSBURG' Barge Master and the

Masters of the AHVs are to confirm that all mechanical equipment and fittings to be

utilized in the pull off and move on operation are operable.

3.8All key personnel shall be fully briefed by the VICKSBURG Barge Master prior to the

commencement of operations, to ensure a full understanding of these procedures. Key

personnel shall include Atwood ToolPusher, Rig Mover, Warranty Surveyor, Winch

Operators and Vessel Masters.

4.0 PRE-MOVE PREPARATION

4.1Pre-move preparations will be made which includes the following as a minimum:

All non-essential personnel to be taken off the rig

Rig move checklist detailing pre-move tasks completed by designated parties and

approved by the Barge Master prior to jacking down.

Stability calculations completed and approved by the Barge Master

Watertight Integrity/ Openings Requiring Closure for unit to be watertight, all

hatches/doors, vents, confirmed watertight. The compartmentalization and watertight

integrity compliance, with specific mention of the closures involved, is addressed in the

Operations Manual.

Sea-fastenings/tie-down made in accordance with good Marine practice and Atwood

Offshore standards. The sea-fastenings will be approved by the O.I.M. and Warranty

Surveyor prior to jacking down. Safety Equipment will be re-verified to be in good

condition 12 hours prior to the rig move.

4.2 Towing Vessels Moving off SONGKHLA-G

Vessels

Lead Tug: Hawk K

Second Tug: Crest Ruby

Third Tug: TBN

All tugs to be provided by COASTAL ENERGY

Note: Atwood tow vessel requirements are For Ocean Tow an approved tow vessel of

minimum 120T bollard pull. For field move two approved tow vessel of minimum 70T bollard

pull. For stern positioning approved tow vessels of minimum 45t bollard pull.


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All Tow Vessels are subject to approval by Atwood elected insurance surveyor.

4.22 The tugs contracted by Coastal Energy must have permission to enter 500m and

connect to the Vicksburg for the duration of move off and tow operations.

.23The details for this move will be presented at the pre-move meeting and will cover the

following points:

Weather parameters for location departure

Weather Criteria (From Vicksburg MOM Section, 16.16)

a. The rigs hull should never enter the water or exit the water unless waves are less than three(3) feet in height for hard bottom and five (5) feet in height for soft bottom.

Weather window for expected duration of the rig move jacking operations

Weather window of a minimum 72 hours will be required to do and complete the

move, jacking, stomping and preload operations

Lines of communication

Tow route

Safe shelters available along the tow route: None.

Soft Pin Positions

Piracy prevention measures to be taken and followed during the tow (24 hour watch

and other measures, as considered necessary.)

4.3 Procedures Undertow

4.31All operating criteria and guidance for stability and watertight integrity contained in

the VICKSBURG Operation Manual will be complied with.

4.32During the tow, routine checks for watertight integrity /tank soundings / draft marks/

towing gear condition / sea-fastenings as instructed by the Barge Master. will be

made and recorded.

4.33Rig motion recorded and position reports can be obtained from the towing vessel, as

available to the rig.

4.34Safe shelters (Thailand)

There are no safe shelters available along the tow route

4.35Piracy prevention measures to be taken and followed during the tow (24 hour watch)

and other measures as considered necessary will be set out.


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5.0 SUMMARY OF PLANNED ACTIVITIES

5.1 The VICKSBURG will be demobilized from Songkhla-G after the completion

scheduled work activities.

5.2The lead tug Hawk K will be secured to the bow lead and the remaining boats to the

port/stbd aft as designated by the rig mover.

5.3When pre-move preparations are complete the rig will jack down into the water and

attempt to pull legs, if no go then jetting legs will commence until free.

5.4 The rig will jack down to draught. Legs will be raised to towing position. Watertight

integrity of the hull shall be checked by the rig personnel and warranty surveyor.

Water Tower must be raised to full height also utilizing extension hoses.

Jetting

5.5After confirmation of w/t integrity from warranty surveyor, the rig willjack to 1-2 foot below floating draft and begin leg pulling operations. Thelegs will be jetted, if the legs do not pull free immediately. Bow leg will be

freed first, then Starboard, Port leg last.5.6Upon completion of the leg pulling operations once the legs are free and clear of sea

bed, the rig will once clear of platform gradually turn to port to go on a northerly

heading ensure that passage will be minimum 500 meters east of SonghklaC thereafter

tow across to Songkhla-D soft pin position location. Final waypoints to be made up

once the position surveyors comes onboard

5.7 Once the rig is positioned it will be soft pinned 100m of Songhkla-D and anchors run.

Stomping5.8 Procedure to follow

6.0 DEPARTURE FROM SONGKHLA-G

6.1 Location Details

Lat; 07 2606 N

Long; 100 3625 E


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Water Depth: 56.4 ft

Vicksburg position heading 90.8

Leg penetrations: Bow: 35.0 ft Port: 35.0 ft Stbd: 35.0ft

6.2 Pull off from Songkhla-G

6.3 The rig will be slowly moved away from the location as the spud can tips clear the

bottom. The initial pull by the tow boats and tugs shall be as directed by the rig

mover.

6.4 Tow Passage

The tow passage will be altered to avoid the fishermans nets, all necessary steps and

precautions will be taken to minimize any possible property damage whilst also

ensuring the safety of all vessels and structures in the area.

6.41The move from Songkhla-G will be in accordance with these guidelines and details

established in the pre-move meeting. Consumable quantities will be recorded for the

rig and tugs; this will be logged in IADC report.

6.42Warranty Surveyor will prior to the move provide approval for the tow. Acceptable

weather conditions must be present to commence the tow and weather forecasts will

be received at a minimum of 72hrs prior to jacking down with a 5 day outlook.

6.43The passage from Songkhla-G to Songkhla-D shall be conducted with Haw K lead tug

(Connected to the VICKSBURG main towing wire). Assisted by another two

nominated tow vessels Crest Ruby and TBN connected to the quarters

6.44The tow distance from Songkhla-G to Songkhla-D is 5.0nautical miles. The duration

of tow shall be 3hours at an anticipated tow speed of 1.7 knots.

6.45The proposed tow route shall ensure that a maximum clearance is maintained from

any obstacles or structures. The tow vessels shall be provided with a copy of the

intended tow route and move procedure.


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6.46The Rig Mover shall discuss the procedures and plans with each boat Captain(s) and

shall include the following as a minimum:

Communications during towing operations.

Proposed tow route

Weather criteria and forecast information

Navigation procedures

Sufficient navigation equipment and updated charts

Facilities and capabilities of tow vessels

Towing arrangements.

Contingency plans and emergency procedures

6.48 Notification shall be transmitted to Coastal Energy, Atwood and the Helicopter

Operators at the following times:

Departure from Songkhla-G

If any problems or delays are encountered in route while in Thai territorial waters.

Arrival at Songkhla-D

Other appropriate authorities shall also be notified of VICKSBURG move progress,

as required.

6.49 It must be ensured that all rig and vessel anchors are racked and double secured. The

tow line length shall be adjusted by the respective vessels accordingly; take into

account towing wire centenary and water depth.

The BA charts used must be corrected to the latest Notices to Mariners.

All vessels shall exhibit the appropriate shapes and lights as required by the Rules of

the Road.

6.50 Tow Route

Below is the proposed tow route of the Vicksburg from Songkhla-G to Songkhla-D,

Thailand. TAS Helicopters requires this to determine the extent of chopper


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requirement in the event of Medivac in Thai waters. TAS Helicopters will provide

emergency cover in Thailand. This will then be communicated to relevant

authorities.

The proposed tow route way points and coordinates

Description Latitude Longitude Course Distance

Songkhla-G 07 2606 N 100 3625 E

Songhkla D 07310 N 1003645 E 002 5.0 NM

7.0 Arrival at Songkhla-D

This will be about 100m off final location at the rig movers discretion

7.1 Final Location Details

Lat; 07 30 59.6 N

Long; 100 36 45 E

Water Depth: 17.8 Mtr / 58.4 Ft ref. Braemar Falconer

Vicksburg to be positioned heading 90

The weather forecasts shall be used to assist in deciding course of action

7.3 Positioning

Positioning will take place by using four anchors and tug assistance

The rig will soft pin 100m off Songhkla-D platform at the rig moversdiscretion enabling anchors to be run and connected, by AHVs. Once anchors

deployed and holding stomping will commenceRig will move onto final position in daylight hours only

Rig must give Coastal Energy 12 hrs notice toenable them to shut inproduction.

7.4 Preload

Sequence and holding time will be decided when stomping has been completed.Awaiting stomping procedures


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8.0 Anchoring Operations

Two AHVs will be utilized at Songhkla-D soft pin location; anchors will berun as per the anchor spread diagram.

Port fwd anchor 040 c/w 300 mtr wireStbd Fwd anchor 140 c/w 300 mtr wire

Stbd aft anchor 220 c/w 450 mtr wire

Port aft anchor 303 c/w 300 mtr wire and also

50 mtr of 70mm chain and one piggy back anchor.

8.1 Clear Deck Policy

8.11 "Clear Deck" Policy MUST be fully discussed and understood on VICKSBURG and

the designated AHVs.

8.12 Winch operators must understand that the load path is clear of personnel prior to

lowering and heaving in of any wires.

8.13 Deck crew handling wire must understand to keep away from the wire paths

whenever wire or chain is under tension. Essential personnel needed on deck must

be within safe haven during operations.

8.2 Communication

8.21 Establish direct VHF radio communication on designated frequency/ channel to link

VICKSBURG to all its support vessels.

8.22 Support Vessels are to ensure that they have direct radio communication between

bridge and deck operations. We will work on channel 72. In case of loss of

communications we will fall back to channel 9, the field channel. Also contact

Phone, fax and email numbers of the tow vessels will be given to the Vicksburg and

Coastal Energy offices before departing Songkhla-G location.

8.23 Communications will be done using the English language.


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Both site and route specific forecasts.

Transmissions direct to the rig twice each 24 hours.

Each forecast to provide 3 day advance cover.

Immediate updates provided in the event of significant change in the forecast.

8.62Receipt of the first forecast will be 48 hours prior to move commencement.

9.0 TOWING SAFETY

SAFETY IS COASTAL ENERGY AND ATWOODS NO.1

PRIORITY9.1 Atwood & Coastal Energy expects that the pull off operations of the VICKSBURG

from Songkhla-G and the tow to Songkhla-D is carried out in a safe and efficientmanner.

9.2 Job Safety Analysis (JSA) shall be carried out by the Master of each AHV before thestart of the positioning operations.

9.3 Daily Safety Meeting shall be held and the Master of each support vessel shall brief his

crew on all aspects of the work to be carried out.

9.4 Work Vests and personal safety equipment must be worn at all times when working on

deck.

9.5 Inspect tools and buoy catchers, test shark jaws/ kamforks, anchor handling winch,

tugger winches and capstans before commencing on operations. OIM / RIG MOVER

shall be kept informed of the status of equipment. Any malfunction shall be reported

immediately to the OIM / Rig Mover who will then advise all key personnel offshore.

9.6 Test communication system between the bridge, tow winch operator, rig mover and the

deck crew.

9.7 Pelican hooks shall not be used at any time during the operations.

9.8 Deck Crew shall stand clear of wires under tension and shall not be on the aft deck

during winch operations. This shall be in accordance with 'Clear Deck Policy' as

described in Section 8.1

9.9 Periodic (hourly) safety messages must be transmitted via all available means by thelead tug warning traffic in the vicinity of the status of tow.

9.10 Working hours and rest periods onboard the towing vessels should be in compliancewith the STCW Convention (STCW95) and ILO Convention No. 180.


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10.0 Final Positioning on Songkhla-D

Final positioning of the rig will be carried out after stomping operations are complete, refer

attached procedure

11. TOW BRIDLE CONNECTION & DISCONNECTION

11.1 The tow bridle connection to the two tugs shall be made when directed by the rigmover.

11.2 Tow Line Connections at Songkhla-G

11.21 The designated lead tug Hawk K shall back up to the bow of the rig and takeposition under the helideck of the rig.

11.22 The eye of the tow wire shall be lowered by rigs tugger winch until the towstringer is received and hauled in by the Hawk K. The tow wire will then besecured on mechanical securing device.

11.23 Tow line connection shall then proceed with the stringer being secured by 100Tshackle to tow wire of Lead Tug.

11.24 The tug shall then pay out tow wire and adjust length for effective pull of rig whenlegs are freed.

11.25 Second and third tugs will be connected to the port and stbd aft side of the rig by

aft tow wires.

11.26 The lead tug shall then pay out tow wire and adjust length for effective pull of rigwhen legs are freed.

11.3 Tow Line Disconnection at Songkhla-D

11.31 The main tow line shall be shortened until the stinger is secured on the mechanicalsecuring device. The Lead Tug shall manoeuvre itself until the stern is under thehelideck whilst spooling in tow wire.

11.32 After the stinger has been disconnected, the weight on the air tugger wire

connected to the delta plate shall be taken up by the rig whilst the stinger remainssecured on mechanical securing device.

11.33 The stinger shall be released from the mechanical securing device of the tugONLY after receiving instructions from the rig mover.

11.34 The tugs on the quarters wire will come close to the side and within reach ofcranes.

11.35 The crane will bring down a pennant wire, which will be connected to the socketof the tow wire when it is locked on the kamfork. When the crane is connected thetow line can be released from the kamfork and brought back on board theVicksburg


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12.0 SUPPORT

12.1 Survey Vessel

None

12.11 Security Vessel

None

12.2 Other Support

12.21All vessels must be suitably manned and be capable of 24 hours continuous

operations.

12.22Vessel Masters and their relief are required to have a good command of the English

language.

12.3 Navigation Package

All AHVs are required to have a navigation package onboard

13.0 EMERGENCY CONTACT NUMBERS / ROUTINE COMMUNICATION

13.1 Field Working VHF channels 72

SSB 5930.0 KHz

Proposed Rig working VHF channel 72 / 73

13.2The following contact numbers are to be used during the tow as required. As a matter

of protocol, all initial communication whether of routine or emergency nature shall be

directed first to the ATWOOD office to Larry Holloway, Operations Manager

VICKSBURG. If Larry Holloway is not available, any of the following ATWOOD

personnel should be contacted.

ATWOOD OFFSHORE Offices Thailand ( Bangkok )


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Office Home Mobile

Larry Holloway

+66 (0) 2-7457305

Houston, Ext. 8780

+66 (0) 2-300-2664 +66-(0) 87-984-9882

Tony Wilson +66 (0) 2- 7457305

Houston, Ext. 8781

+66-(0) 89-812-7224

Michael VanKeuren +66 (0) 2-7457305

Houston, Ext 8783 +662 911-6750 +66-(0)8-9529-0022

COASTAL ENERGY Offices ( Thailand)

Office Home Mobile

Tony Veerachai Marine Facilities

Manager

+662 6100594 +6621970031 +66817315090

Rapee Kudisri Drilling Manager +6626100591 +66854867458

Ken Hemmerich Operations Manager +66 2 6100577 +66 819211061

Soraya OIM OIM +662 6100580 +66824288250

Suwat (Base Manager) Songkhla Base Manager +6674 331031 +66815417476

Vicksburg

Office Home Mobile

Inmarsat +873- 350 302 310

V-Sat


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Tow Boats Comms:

Contact Name Boat Mini Sat Boat Mini-M Sat Fax Hand Phone

Via Radio Room

14.0 MEDIVAC PROCEDURES

14.1 In the event a serious injury or sickness occurs during the tow, Atwood Medivac

Procedures shall apply while in Thai territorial waters.

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