introduction resposibilities and administration

STANDARD DRILLING PROCEDURES MANUAL CHAPTER 0 PAGE 1INTRODUCTION, RESPONSIBILITIES AND

ADMINISTRATIONREVISION 2 08-05-03

DWE: DATE:

CHAPTER INDEX

BULLETIN ITEM PAGE

0.1 INTRODUCTION 2

0.1.1 Objectives 2

0.1.2 Policy 2

0.2 CONTROL PROCEDURES 3

0.2.1 Control Objectives 3

0.2.2 Organisation 3

0.2.3 Revision Procedures 4

0.2.4 Distribution of the Manual 4

0.2.5 Rig Library 5

0.3 STAFF DUTIES AND RESPONSIBILITIES

6

0.3.1 Responsibilities of the SPDC Drilling Supervisor (DSV) 8

0.3.2 Authority of the SPDC Drilling Supervisor (DSV) 11

0.3.3 Regularly recurring Duties of the SPDC Drilling Supervisor (DSV) 11

0.3.4 Responsibilities of Assistant Drilling Supervisor (ADSV) 13

0.3.5 Responsibilities of the Contractor Toolpusher 16

0.3.6 Rig Visits 17

0.3.7 Pre-spud Meetings 18

0.3.8 Reporting of Operations 19

0.3.9 Materials Accountability 19

0.3.10 Contractor Invoices 20

0.4 END OF WELL PAPERS 20

0.4.1 Directorate of Petroleum Resources (DPR) Report 22

0.4.2 DWX-OPS Well File 22

0.4.3 Miscellaneous Files 22



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0.1 INTRODUCTION

The Drilling Engineering Procedures Manual is organised into chapters, each covering a

significant aspect of drilling activities. The chapters are arranged in the normal sequence

of drilling activities. The text assumes a basic knowledge of drilling activities. A

bibliography of references is quoted, where convenient, to provide a lead to further study

of particular topics. As an aid to ready reference, diagrams and tables of data have been

designed to be self-explanatory where ever possible.

It should be emphasised that not all "standards" are necessarily applicable to all situations.

Exceptions will occur and these may require new "Standards" to be written and approved,

dependent upon the frequency of such exceptions.

Suggestions for changes to equipment, standard procedures and techniques are strongly

encouraged and should be submitted through normal channels as described in sub-bulletin

0.2.3.

0.1.1 OBJECTIVES

The primary objectives of the manual are as follows:

1. To provide a reference, containing approved "Standard Procedures" for the SPDC Well

Engineering Department.

2. To provide guidelines and standards, which will assist well-site personnel and office,

based personnel to plan, design and execute a drilling programme in a safe and efficient

manner.

0.1.2 POLICY

1. Agreed and approved "Standards" shall not be deviated from, without consultation with

and approval from the Senior Well Engineer (SWE), who is the Rig team leader. The

SWE will consult and seek approval from DWE-OPS /DWW-OPS and DWE.

2. The standard procedures apply to all SPDC Well Engineering Operations.



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3. A formal system for making changes and/or new standard procedures is outlined in sub-

bulletin 0.2.3. Changes must be subjected to wide dissemination and discussion and should

be encouraged to keep the manual alive, up-to-date and continually used.

0.2 CONTROL PROCEDURES

These are formal outlined steps, which must be followed in case any change is required in

part, or a new standard procedure need to be included.

0.2.1 CONTROL OBJECTIVES

1. To define a system for administering and controlling the distribution of all copies of the

manual, its updates and deletions.

2. To define a system for introducing, discussing and approving changes to standard drilling

procedures on a co-ordinated inter-divisional basis.

0.2.2 ORGANISATION

1. Overall control of the SPDC Drilling Engineering Procedures Manual is assigned jointly to

DWE-OPS/DWW-OPS and DWE, by virtue of its subject matter. The Heads of these

departments shall agree to the appointment of co-ordinators in charge of the issue and

updating of the manual. Certain other departments (PXX-DEV, PSX-XXX, and PXX)

may have valuable input for specific chapters, and they will be consulted to ensure that

the correct standards are reflected in the manual.

2. Control of the manual in each division will be exercised through the Department Head by

a nominated departmental focal point. The responsibilities of this focal point with respect

to the manual will be an established part of the job function.

3. Distribution of the manual will be sufficiently wide to make it readily available to all users.

4. Indicated copies remain the property of the Company and not the property of the

incumbent in the nominated function. All copies will be numbered and records kept by the

focal point of the current distribution.



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5. The manual is written on Word for Windows and stored on 3-1/2" floppy disks and CD-

ROM, some of the illustrations are on MS-Draw/Word 6.0 Picture and are also stored on

3-1/2" floppy and CD-ROM, which are in two copies each. The focal points are

responsible for updating the disks with all revisions to the manual.

0.2.3 REVISION PROCEDURES

The nominated focal points for the manual shall co-ordinate and administer the

preparation, approval, reproduction, and distribution of each chapter of the manual in an

agreeable order and concurrently any updates thereof. Changes or additions may be

proposed through the Divisional Department Head.

The approval procedure, amendment, or addition to the manual is as follows:

1. The drafted proposal will be sent through the line to DWW-OPS/DWE-OPS/DWE-

TEC/DWE-PLN for vetting and, when approved, on to DWE. The proposal will be

discussed at the next DWE meeting and be accepted or rejected.

2. If no agreement can be reached, arbitration will be sought at DVD level. Alternatively, if

the different views are acceptable as sound oilfield practices, they will be expressed as

options in the Manual.

3. Approved revisions (dated and numbered sequentially) will be distributed as per the

master distribution list to staff in possession of the manual.

4. The departmental focal point will maintain a record of revisions issued.

0.2.4 DISTRIBUTION OF THE MANUAL

HOLDER REF. INDICATOR COPIES

1. Well Engineering Department (East) (DWE) 70

2. Well Engineering Department (West) (DWW-OPS) 70

3. Area Development (East) (PXE-DEV) 7

4. Area Development (West) (PXW-DEV) 7

5. Area Production (East) (GPE) 3

6. Area Production (West) (GPW) 3



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7. Civil Infrastructure (East) (PSE) 1

8. Civil Infrastructure (West) (PSW) 1

9. Supply Logistics (East) (SSE-XXX) 1

10. Supply Logistics (West) (SSW-XXX) 1

11. Supply Procurement (East) (SSE-PROS) 1

12. Supply Procurement (West) (SSW-PROS) 1

13. Health, Safety and Environment (East) (HSE-XXX) 1

14. Health, Safety and Environment (West) (HSW-XXX) 1

15. Business Development and (BXE) 2

Exploration (East)

16. Business Development and BXW 2

Exploration (West)

17. Development Director (DVD) 3

18. Drilling Contractor Management 12

19. All Rigs 40

20. Spare Copies 13_

240

===

0.2.5 RIG LIBRARY

The Rig should maintain a library of all SIEP and SPDC operations related books forreference whenever required. This library should be situated in the office of, and bemaintained by the Assistant Drilling Supervisor (ADSV).

The following books are recommended for the rig site library:

1. SPDC Drilling Engineering Procedure Manual

2. SPDC Workover and Well Completion Manuals

3. SPDC Contingency Procedure

4. SPDC Quality Assurance.

5. SPDC Oil Contingency spillage

6. SPDC Safety Manual

7. SPDC Rig Operations Procedure Manual

8. SPDC Shallow Gas Procedure

9. SIPM Shallow Gas Procedure EP 88-1000

10. Safety Manual EP-55000 (Volume 3 - Operations Safety).



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11. Pressure Control Manual EP 89-1500 (July 1989).

12. Guidelines for Detection and Control of Hydrogen Sulphide EP-53738 (June 1981)

13. Management safety Inspection

14. Qualitative Risk Assessment Report EP 5500 - 18 (May, 1990).

15. Production handbook Volumes 1 -9

16. Standard Procedure for High Pressure Drilling - June 1991.

17. Personal Protective Equipment Guide - June, 1991.

18. Specification of Drill Pipe - March 15, 1991

19. Specification for wellhead and Christmas tree Equipment - October 1, 1989 API Spec.

6A. 16th edition.

20. Making the most of well planning (EP 92-2500).

21. ABC of Stuck Pipe

22. Drilling Engineer's Note book

23. Drilling Data Book

24. English Dictionary

25. Composite catalogue. All current Volumes

26. SHOC Cards of all chemicals in use on the rig.

27. Copies of all Drilling and Services Contracts.

28. Mineral oil Act/Regulations 1963.

0.3 STAFF DUTIES AND RESPONSIBILITIES (Reference section 3 & appendix 3

of DWE HSE-MS manual)

Office based rig team:

In line with the Drilling The Limit (DTL) concept, the office based Rig-team under the

leadership of the Senior Well Engineer (SWE) shall establish the existing gap between the

Best Well Time and the Technical Limit Time during the Well Planning Stage.

In order to “engineer-out" this gap the office will look into:

a) Performance against Technical Limit analysis of previous wells to determine

main problem areas.

b) Analyses of root causes to determine common underlying causes.



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c) Networking/Benchmarking, existing initiatives and New Technology by the use of a

multidisciplinary team consultation (extended team).

The strategy to help ‘Engineer out’ the gap will be:

a) To hold a DTL workshop as early as possible in the Well Planning stage

b) To hold a Drilling the Well On Paper (DWOP) exercise at least 2 months before

spud.

c) Have Critical Well Reviews with peers from other divisions/OUs.

d) Develop Operations Checklists to ensure effective application of action points from the

DWOP exercise.

From the well site crew consultation process and Technical Limit (TL) review, an

operations check list will be made that can be pulled out at pre tour talks and where

Contractor Toolpushers (TPs), Drillers can show crews the steps that need to be taken to

achieve TL.

For every justified suggested change, a Best Practice Form will be issued and signed off

by the relevant parties. However, if a certain suggested improvement does not require a

study, but was agreed upon during the DWOP exercise, the suggestion will be entered

directly into the Best Practice Database. The change will then be implemented after

signing off.

All suggested improvements and Best Practices will be registered in a Performance

Improvement Proposal Database (with ref. to, area of application, priority etc) which

shall be published and endorsed by DWE.

Field based rig team:

On the rig, the SPDC Drilling Supervisor (DSV) has overall responsibility for all

operations including CASHES aspects of the well and location for the safe

implementation of the Drilling programme. He shall be conversant with the Quality Well

Delivery Process. It is the accepted practice for the DSV to delegate some degree of



DWE: DATE:

responsibility to the Assistant Drilling Supervisor (ADSV). However, the DSV carries

final responsibility for all rig operations.

It must be clearly understood that the ADSV and DSV including other Contractors' and

Service Company representatives together form the rig team. The rig team shall report

directly to the Well Engineer (WE), who in turn reports to the Senior Well Engineer

(SWE) who has the "Single Point Responsibility" for all operations on the rig.

Therefore, co-ordination and effective communications are vital for the rig's daily

operations.

The DSV is solely responsible for the accuracy of the information passed to base in the

daily drilling reports.

0.3.1 RESPONSIBILITIES OF SPDC DRILLING SUPERVISOR (DSV)

In specific terms, the Drilling Supervisor's responsibilities include but are not

limited to the following:

1. To direct, control and plan the programmed activities of the Drilling rig in the safest and

cost effective manner, following approved standards as outlined in the programme.

2. To be responsible for the conduct of drilling and associated work performed by rig

personnel. He shall also make comments and recommendations on draft well

programmes.

3. He shall spend at least 2 days in DWW-OPS (possibly with the WE/SWE) office during

his time off.

4. To be responsible for the scheduling of shift changes of SPDC and service personnel on

the rig.

5. To be responsible for the timely ordering, and checking of materials and tools necessary

for the activities under his control.



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6. To return all surplus tools/materials to DWW-OPS/DWE-OPS (Movables)/SSX-PRO

(Materials) yard with the appropriate documentation and ensure the timely return of

rented tools/equipment.

7. To pass information to the WE via DIMS and in the form of up-to-date routine reports.

8. To ensure that the CASHES rules pertaining to the operations are adhered to, and

requisite safety reports/audits are completed.

9. To maintain control of and to ensure that, service personnel on site are treated in

accordance with statutory regulations and SPDC policies.

10. To ensure all arrivals on the rig (staff, contractor, visitors, etc) receive relevant

briefing/induction.

11. To ensure that all operations are executed in accordance with the programmes and

policies of the Company.

12. To confirm that the next location is ready to receive the rig and initial supplies for the next

well are available. He shall also inspect the wellhead of the next well and record

observations where applicable.

13. To cope with all emergencies arising on or around the rig and to be able to take over from

the contractor if he is unable to control a particular situation (kick, blow-out, loss of

circulation, CASHES matters, etc.).

14. To ascertain, in consultation with the Mud Engineer, that the correct mud properties are

being maintained during the drilling of the well and that an appropriate sufficient stock of

chemicals are on site at all times.

Note: All effort shall be made to ensure that all stock of chemicals is prevented

from possible theft or damage due to weather.

15. To ensure that the Company's time is used efficiently by avoiding possible "invisible lost

time" and ensure that the quality of the operations is maintained, when operating an

incentive type of contract.



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16. To ensure correct cost reporting/VOWD of contract services.

17. To physically supervise at the rig-floor, pressure tests, coring operations, cementation,

down-hole-motor orientation, and any other non-routine but essential operations.

18. To ensure that the BOP and associated pressure tests are carried out, as per Drilling

programmes and shall witness such tests to ensure that the required BOP stack testing

report is completed.

19. To be responsible for the application of the mining regulations as an appointed

"Competent Person" together with the contractor Toolpusher.

20. To prepare the following reports and submit them to base at first opportunity:

a) Weekly CASHES Report

b) Weekly Rig Inspection Report

c) BOP Test Report

d) End of Well Drilling Materials Return (DMR) and DIMS Reports

e) Final status drawing of the well just completed drilled or suspended.

f) End of month and end of well fuel and lubricants log, completed with Materials

Transfer Voucher (MTVs)

g) Bit records on the appropriate forms with duplicate copies to DWX-OPS office at the

end of each well.

h) Weekly record of rental equipment on site.

i) Written reports on failures (Event Accessment Reports - EARs), successes, lost time

incidents (NPTs) and accidents

j) Annual staff reports on SPDC subordinates, monthly reports on new staff and bi-

monthly reports on confirmed staff.

21. To ensure that a surveyor from DTX-GEM must be on board during rig move in order to

ensure that the rig is initially positioned on the correct location and using the correct cellar

or slot (swamp/offshore).

In line with the Best practices and Drilling The Limit (DTL) concept::

22. To discuss Technical Limit times and what is needed to achieve these times during

morning meetings.



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23. To evaluate visible and invisible lost time (with parties concerned) and recommend

solutions.

24. To create and support an ‘enabling environment’ on the rig and attend pre-tour talks.

0.3.2 AUTHORITY OF THE SPDC DRILLING SUPERVISOR

The Drilling Supervisor shall have the following authorities:

a) Expenditure:

To approve minor expenditure incurred in the running of drilling operations (to be checked

with the SWE) so long as there is proper budget approval.

b) Contractor Bills:

- To scrutinise and endorse on site, all SPDC service order forms and contractor bills for

jobs, which are supervised by him and for all contracts, administered by DWX-OPS.

- To ensure that the appropriate Job/Call-Off order account number is well written on the

contractors’ tickets signed. This is to ensure that it is captured in the right section of the

wells’ Value Of Work Done (VOWD) and CFX-DEVW accounting system.

C) Materials:

To order all materials, spare parts and general supplies by E-mail, addressed to the Supply

Procurement Warehouse and to sign Material Return/Transfer Vouchers, DMR, WMR,

etc.

d) Transport:

To ensure that the rigs Journey Management System is strictly followed and

personnel/materials handling tickets are duly signed off.

0.3.3 REGULARLY RECURRING DUTIES OF THE SPDC DRILLING

SUPERVISOR

1. Complete pre-kick (well kill) calculation sheet as and when required.



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2. Check with contractor Toolpusher, all entries on his report, and compare it with the time

breakdown in the Driller's Tour Report, (Martin Decker and Totco or Geolograph

Recorder Charts may also be utilised).

3. Give a complete, correct and clear picture of daily operations in the daily DIMS report

and morning broadcast.

4. Ensure that all wellsite non-routine activities are conducted in accordance with PTW

system and that all welding in the rig workshop is covered by daily "Hot Work permits".

5. Keep WE fully informed of the condition of contractor's drilling equipment and report any

‘Invisible Lost Time’ (inefficiencies and non-essential activities).

6. Hold morning meetings with drilling contractor, ADSV and relevant service personnel.

Discussions shall include operations forecast during the next 24 to 48 hours. He shall also

witness all CASHES meetings and drills.

7. Advise the WE when certain contractors are required on site including when their

services are no more required.

8. Order well materials via E-mail, telephone, and radio (whichever is applicable), stating

urgency by indicating Earliest On Site (EOS) and Latest On Site (LOS).

9. Plan (ahead) for efficient delivery, and state expected time of arrival on the E-mail giving

at least seven days notice for routine orders. Send 14 days "look ahead" E-mail each

Monday, detailing future operations, and requirements.

10. Hold pre-spud meetings and document the Minutes Of Meetings (MOM) as in sub-

bulletin 0.3.8.

11. Report to DWX-OPS office for briefings prior to leaving for the rig.

12. Prepare written hand-over notes and submit a duplicate copy to SWE in charge.

13. Ensure and physically supervise the following:

- Proper functioning of all rig equipment including BOPs, Mud treatment and solids

control equipment.



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- Spudding of the well and the drilling of the first 500 ft in case of shallow gas, mud

break-out, collision with existing wells, etc.

- During open hole tripping, the pulling of at least the first 10 stands out and the running in

of the last 10 stands in and whilst working the pipe in tight hole.

- Cutting of casing and installing of Casing Head Housing (CHH) to ensure proper cut-off

length.

- Proper functioning of cementing equipment before starting the job and the physical

check of the amount of cement on site.

0.3.4 RESPONSIBILITIES OF ASSISTANT DRILLING SUPERVISOR (ADSV)

The ADSV shall understudy the DSV and assist in all operations. His tasks and that of

the DSV are similar except that the DSV is fully accountable. He shall report to the DSV

in all matters.

a) General

The ADSV is a member of the field well project team, and therefore must work hand in

hand with the DSV and other members of the team. The ADSV reports to the DSV who

may delegate certain duties, which include but are not limited to the following:

1. Carry out the tasks laid out in the DSV instructions and render such services as may be

required to achieve optimum drilling efficiency.

2. Attend the daily Drilling Broadcasts and submit to the DSV relevant figures and

information for the Daily Reports, including an up-to-date Depth/Time and Depth/Cost

graphs.

3. Keep close contacts with the DSV in order to enable him discuss reports, procedures,

etc. with the WE.

4. Request in advance, for the well files, logs, PDL, DPR approval letter, etc. of correlating

wells, for reference purpose.



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5. Know the target of the well, expected correlation, occurrence of geopressures, etc. and

keep the DSV informed on the position of the well while drilling, especially with respect

to neighbouring wells. Ensure that survey calculations are accurately recorded, and the

deviation plot updated.

6. When nearing TD, keep DSV adequately informed on the correlation to ensure that the

well is drilled to the required depth.

7. If from the correlation, it appears that a well is nearing a geopressured zone, or if a shale

section of over 500-ft has been drilled, the ADSV should inform the DSV, who will in

turn contact base for advice.

8. Keep the DSV informed of any findings with regard to hole condition, mud properties,

etc. which may affect further drilling.

9. Keep an up-to-date handover book on the rig, and ensure a proper handover when

relieved.

10. During his days off (or as required) the ADSV shall spend two working days in DWW-

OPS office to familiarise himself with the various sections in the department. Before

returning to the wellsite, the ADSV shall collect all information on drilling, logging, sub-

surface geology, etc. required for the well being drilled and next well on the programme.

11. Maintain an up-to-date chemical stock book, while on the rig.

12. Complete Unsafe Act Audits as necessary and attend rig site safety meetings.

13. Ensure correct cost reporting/VOWD in line with DTL.

14. Maintain good record of Event Assessment Reports (EAR) and complete such reports

when necessary.

In line with the Best practices and Drilling The Limit (DTL) concept::

15. The ADSV shall:

- Provide the DSV with Data (technical limit times, average times) and relevant check

lists/Best practices sections before every morning meeting and pre-tour talk.



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- Report Removable Time Analyses recommendations to office.

b) Duties during Specific Operations

Procedures on geopressured drilling, well control, testing, well treatments, etc. shall be

fully understood and shall be discussed with the DSV.

Safety:

The ADSV shall promote safe working by bringing to the attention of the DSV unsafe

equipment and practices. He shall be present during the pressure testing of BOPs, casing,

etc., and take part in all safety meetings.

Bits:

Bit selection and hydraulics, which involves comparing the current bit performance with

that of previous wells shall be discussed with the DSV.

Fishing:

Working stuckpipe, fishing and related operations, which are directly supervised by the

DSV, shall also be witnessed by the ADSV and appropriate report fully written.

Deviated Drilling:

On wells to be deviated, the ADSV shall endeavour to be present when orienting the

down-hole motor, jetting and other kick-off operations. He shall also check the deviation

readings, calculations and plot every survey.

Mud:

The ADSV shall assist the DSV in Quality management of drilling fluids by supervising

the duties of the contract Mud Engineer in line with Drilling The Limit (DTL) concept.

This is by ensuring that the mud properties are maintained as per programme and the

chemical consumption rate is closely and adequately monitored.

Casing and cementing:



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The DSV shall delegate to the ADSV the measurement and keeping of tallies of all

casing strings received on site. The ADSV will then prepare the casing running list, which

is later be cross-checked by the DSV.

Both the ADSV and DSV shall prepare the casing cementation programme

independently and agree on final figures before commencement of any cementing job.

Where inexplicable differences occur, they shall be investigated immediately. Regular

checks on cement additive stocks must be made, to ensure that the cement contractor

has sufficient and adequate stocks available in good time for the jobs.

Note: Water and cement samples must be sent to the PC lab as early as

possible to ensure that appropriate tests are carried out prior to any cement job.

Moreover, the cementing Contractor shall also carry out independent tests for

comparison.

Wireline Logging:

The ADSV shall supervise all logging operations as delegated by the DSV and ensure

that such operations are carried out in line with standard procedures.

0.3.5 RESPONSIBILITIES OF THE CONTRACT TOOLPUSHER

In addition to the Contractor Toolpusher being responsible for the effective operation of

his machinery, he is also part of the field project team.

In addition, his job includes:

1. Responsible for checking all drilling equipment on the rig.

2. Ensure that operations are carried out as spelt out in the SPDC Operations Policy and

Procedures.

3. Investigate and report all incidents/accidents immediately

4. Responsible for training, scheduling and conduct of his staff.

5. Ensure that the unsafe act audit system is implemented and practised on his rig.



DWE: DATE:

6. Maintain effective communication with all SPDC personnel on site.

7. Ensure strict adherence to Company/Contract CASHES policies including the rig HSE

Case.

In line with the Best practices and Drilling The Limit (DTL) concept:

8. Discusses with the rig team Technical Limit times and identifies what is needed toachieve these times every pre-tour talk.

9. Involves the Drillers and Crew members in Technical Limit thinking, to ensure TechnicalLimit times are seen as a tool for identifying improvements and achieving our targets(incl. Beating the incentive curve).

10. Highlights achievements and rewards efforts of previous phases and days.

0.3.6 RIG VISITS

Rigs should be visited regularly by office based operations personnel namely WEs, SWEs,

DWX-OPS and DWE.

Other DWX-OPS staff may also visit occasionally as applicable to discuss contractual

financial/cost and technical issues.

The following are recommended frequencies:

1. The WE, in-charge of the rig, shall visit his rig once per week. The visit is mainly

intended to discuss with the DSV/ADSV the ongoing operations and preparation for

upcoming activities.

A short visit note (dated and numbered sequentially) of 1 - 2 A4 pages will be written by

the WE detailing items discussed with action parties/close-out dates. The WE's visit could

also be used to carry out Unsafe Act Audits and discuss CASHES topics.

2. The SWE in-charge of the rig, shall visit his rigs at least once every month. This visit will

focus both on CASHES and other operational matters. The Drilling Contractor's Rig

Manager and possible Base manager of service contractors shall accompany the SWE,

whenever required. A short visit note (dated and numbered sequentially) will be prepared.



DWE: DATE:

3. The Head of Operations (DWX-OPS) shall visit his rigs at least once every quarter,

accompanied by Rig Manager/Operations manager or Base Manager of Drilling

Contractor. Focus of the visit will be primarily CASHES, in line with the Enhanced Safety

Management system. In addition, a visit note will be drafted.

4. The Head of Well Engineering (DWE), shall visit each of the rigs at least once every

year to ensure, through mini-audit/review, that SPDC's policies and procedures are being

followed.

All action items from above visits are to be entered into a master list, which is to be kept

on the rig by the SPDC DSV. Once per week (Sunday) an Email/Fax is to be sent to the

office (DWE, DWX-OPS, SWE and WE) indicating the status of all outstanding action

items and expected close out date.

0.3.7 PRE-SPUD MEETINGS

Pre-spud meetings shall be held on the rigsite prior to spudding a well. The aim is to

provide important highlights, which require consideration in the drilling of the well.

The Geologist, Drilling Engineer/Senior Well Engineer and Petrophysicist shall attend and

make presentations as follows:

Geologist:

- Objective of the well

- Structured and Stratigraphy description

- Reservoir geology

- Drilling hazards

- Well prognosis (with pressure regimes)

- Rewards

Drilling Engineer:

- Correlating wells' information (well type, casing strings, mud types and properties, hole

problems, etc.).

- Proposed drilling plan: well trajectory and directional drilling plan, mud properties and

engineering, pressure profile, bit and hydraulics programme, borehole survey, casing



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programme/design (emphasising design parameters/window, cementation, expected

drilling highlights/problems, etc.).

Petrophysicist:

- Wireline logging programme, mud logging, logging while drilling, etc.

The ADSV shall record the minutes of the pre-spud meeting and send same to the base

by Email/Fax to DWE, DWX-OPS, SWE, WE, PXX-DEV, BXE-GEO, BXE-MAT

within twenty-four hours and retain a copy on site to constitute part of the end of well

papers.

0.3.8 REPORTING OF OPERATIONS

The SWE has the "single point responsibility" for all operations/activities on the rig and

is therefore the focal point for all reporting from the rigs, either directly or through WEs

within the "team". They shall be informed if any operation is running contrary to

expectation. This is irrespective of the time the event occurred. The rigsite and the

office-based staff form a supervisory team.

It is vital that all information from the rig goes through the DSV to ensure a single

communication channel and accurate reporting. Therefore, the importance of complete

and objective reporting cannot be over-emphasised.

0.3.9 MATERIALS ACCOUNTABILITY

a) Mud Chemicals:

The DSV usually delegates the verification of the physical stock of all mud chemicals to

the ADSV. However, all delivery tickets shall be signed by the DSV after confirmation

from the ADSV that delivered quantities are as specified on the tickets. Where

differences exist, actual quantities received shall be written on the tickets.

A physical inventory of mud and cement chemicals should be taken weekly.

b) At End of Well:



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All paper works pertaining to materials consumption and transfer including material

handover forms must be completed and signed by the DSV prior to the rig completely

moving off the location and handover of the well with a signed handover form.

0.3.10 CONTRACTOR INVOICES

The DSV shall scrutinise and endorse all contractor invoices.

0.4 END OF WELL PAPERS:

These papers form an essential part of the documentation. All applicable ones must be

completed and duly signed immediately after completing a well with the relevant ones

being kept in the DWX-OPS Well File.

In line with the "Drilling The Limit" concept of increased contractor participation and

responsibility, new contracts require a high standard of reporting. Where such reports

(e.g. End of Well Reports from Mud, Cement and Directional Contractors) are

considered to be of a sufficient quality to replace standard SPDC reports, they should not

be duplicated. It is the responsibility of the Senior Well Engineer to ensure that contractor

reports are of sufficient quality.

Drilling Information Management System (DIMS) has been implemented as a

replacement for EPIDORIS due to it not being user-friendly. Because DIMS

incorporates a number of Standard End of Well (EOW) file reports, the job of writing

EOW summaries/reports is greatly reduced.

While some of the EOW file documents are covered in the DIMS, others require

scanning in order to be added to the DWX-OPS Well File.

Documents/reports currently covered in DIMS are:

1. Well Proposal

2. Drilling Programme

3. Deviation Survey data Sheets (Directional Drilling/Surveying Contractor or SPDC).

4. Deviation Survey Plot (Directional Drilling/Surveying Contractor or SPDC).

5. Bit Records



DWE: DATE:

6. Bit and Hydraulic data

7. Casing Tally (Continuation) Sheets

8. Casing cementation Report

9. Casing and Cementing Data Sheets

10. Remedial Cementation reports

11. Cementing Summary Report (Cement Contractor)

12. Casing Leak-off Test plots

13. Wellsite Coring data Sheets (Coring Contractor or SPDC)

14. Logging Summary Sheet

15. Sidewall Sample Report

16. Mud Recap including Chemicals Usage (Mud Contractor)

17. Chemical Stock Sheets

18. Final Well Status Diagram

19. Day versus Depth Plot

20. Cumulative Costs vs Days on Well Plot

21. Final Drilling Report

22. Transfer of Material Forms

23. Well Drilling Forms.

24. Daily Reports of Drilling Supervisor

25. IADC Daily Reports

While Documents/reports that require scanning are:

1. DPR Approval Letter (NNPC)

2. Location handover Report to DWX-OPS

3. Casing Check-list

4. Cement Displacement Data Sheets

5. RFT Report (Email/Fax)

6. Logging Time Allocation

7. BOP Equipment Inspection Reports

8. Weekly CASHES Report and Rig Drills

9. Mud Log (Mud Logging Contractor)

10. Mud Logging Time Sheet

11. Direct Materials Issue Vouchers

12. Material Return Vouchers

13. Drilling Materials Return Form

14. Drilling Supervisor's Weekly Rig Inspection Reports



DWE: DATE:

15. Hand-over report to DWX-OPS (Completion)

0.4.1 DIRECTORATE OF PETROLEUM RESOURCES (DPR) REPORT

A DPR report is prepared by the WE from the papers in the End of Well File.

0.4.2 DWX-OPS WELL FILE

A DWX-OPS Well File shall be retained within the department and be kept in the library.

Each well file will contain the following documents/reports:

1. Drilling Programme

2. Daily Report

3. IADC Report

4. Mud Report from Contractor

5. Deviation Report from Contractor

6. Casing and Cementing Reports

7. Cementing Report from Contractor

8. LOT Reports

9. Mud Log (if available)

10. Bit Record Sheets

11. Final Well Status Diagram

12. Handover form

0.4.3 MISCELLANEOUS FILES

Other reports that require completing but not necessarily kept in the well files shall be

maintained on the rig. These are:

1. BOP Reports

2. Rig Inspection Reports

3. CASHES Reports

In addition, information on bit records, mud motors etc shall be entered into the bit

database and other relevant sections in the DIMS by the DSV/ADSV.

introduction resposibilities and administration

Documents

approved standard procedures

drilling programme

spdc drilling supervisor

revision procedures

new standards

approved standards

control objectives

dweops dwwops