CUSTOMER :

Newcross Petroleum LimitedEfe Early Production Facility Front End Engineering DesignContract N: OPL283.PR140001

PIPE MATERIAL CLASS SUMMARYDocument Number: NPL-NG-P140001-BM-752Originator:Obasipe GbengaPiping Engineer

Checker:Kehinde AdebayoPiping Engineer

Approver:Augustine ObiProject Manager

2.0Issued for Approval16.DEC.14OGTKADAOB

Rev.Reason for IssueIssue DatePrepared byChecked byApproved byClient Approval

This document is the property of NPL and its affiliates and subsidiaries and copying and/or disclosure of the information it contains is prohibited without the permission of NPL. It has been reviewed and approved in accordance with Management System requirements and where applicable an audit trail is available within the relevant document management system. The most recently approved version is regarded as the controlled copy with all other copies being for information only. It is the holders responsibility to ensure that they hold the latest approved version. Revision RECORD SHEET

RevisionIssue

DateSectionDescription of Update

P123.09.14Issued for Inter-Discipline Check

A30.09.14Issued for Review

1.027.10.14Issued for Approval

2.016.12.14Re-Issued for Approval

DISTRIBUTION

RecipientCompanyE-Mail AddressQty

TABLE OF CONTENTS

41.introduction

41.1project description

41.2DOCUMENT objectives

51.3CONFLICT

51.4Definitions

51.5project design overview

61.6applicable codes and standards

71.7ABBREVIATIONS/DEFINITIONS

82.REFERENCES

123.GENERAL NOTES

123.1Units

123.2Design limits and piping wall thickness

133.3pipe diameters

133.4Threaded joints

143.5Jointing of small bore pipes

143.6Bends and elbows in small bore piping

143.7Unions

143.8Bolt tensioners

143.9Valves

153.10Pipes

173.11Fittings

173.12Flanges, blinds and spacers

194.Appendix A

194.1Class 150: Carbon Steel (Sweet Service) A1

254.2Class 300: Carbon Steel (Sweet Service) B1

314.3Class 600: Carbon Steel (Sweet Service) D1

1. introduction

1.1 project descriptionOPL 283 is an onshore lease formerly operated by Elf Petroleum Nigeria Limited as OML 56 until 2005 when operatorship was transferred to Centrica Resources Nigeria Ltd. Centrica and CCC in February, 2010 divested their respective participating interests in the block to Newcross Petroleum Limited. The block is bounded in the West by Seplats OML 38, in the East by AGIPs OML 60 OPL 280 and in the North by Pan Oceans OPL 275 and in the South by OML 30. Based on current exploratory activities, Newcross has so far, identified Efe-Main as one of the prospects located within OPL 283 block. The structure was proved to be hydrocarbon bearing from the Efe-1 discovery well and subsequently appraised with Efe-2 while Efe-3 has just been drilled.Initial DST results indicated flow rates range of 350-1750 bopd per well, 42-48Deg API light crude and 1.5-18MMsc/D gas per well with 1800-3850psig on tubing. As part of plans to fast track development in the field to first oil, we desire to carry out a Front End Engineering Design for the Construction of an Early Production Facility (EPF) within OPL 283 Field. In consideration of the field size/number of wells, terrain, date to first oil, export strategy, health safety and environment, and abandonment, the following development concept is proposed:

1. Wells are predrilled using a minimum of 2000 horsepower land rig on a predetermined cellar slots

2. Well effluents flow through a multiphase flowline to a 15,000BOPD, 100MMSCFD modularized early production facility (EPF) for processing

3. Oil will be evacuated via a 42km ROW to LACT unit at Ovade / Ogharefe Flowstation facilities for metering and onward transmission to Amukpe-Escravos export line.

4. Rich gas will be evacuated via a 42km ROW for onward transmission to Ovade / Ogharefe Gas Plant for processing.1.2 DOCUMENT objectivesThe objective of the project is to carry out FEED aimed at achieving the following:

1. 15,000 BOPD and 100 MMSCFD modularized land-based oil and gas production facility with provision for future expansion.2. Oil separation, stabilization, storage and metering before being exported via an export pipeline.3. Compression of gas to the required specification and metering before transfer to the existing Pan Ocean gas plant facility at Ovade-Ogharefe, Delta State for processing.4. Produced water treatment to the standard specification for disposal or possible re-injection.

1.3 CONFLICTWherever a difference exists between this specification and the drawings, the drawings shall govern. No deviation shall be made from this specification without written authorization from New Cross Petroleum Nigeria Limited.

1.4 DefinitionsThe following definitions shall apply:

Must/Shall Indicates a mandatory requirement.

Should Indicates a preferred course of action or strongly recommended to comply with the requirements of this specification

May Indicates an acceptable course of action.

Company The party who initiates the project and ultimately specifies the technical requirements, which is NEWCROSS PETROLEUM LIMITED.

Contractor The party who carries out all or part of the engineering of the project; which is GLOBAL OCEON ENGINEERS NIGERIA LIMITED.

1.5 project design overview

The OPL 283 Early Production Facility shall be modularized designed with an allowance for future expansion. It is expected to gather fluids form all the wells in Efe field, some other fields within OPL 283 and other contiguous fields. It is also required to receive fluids via a four header production manifold, comprising of HP, MP, LP and test headers in order to accommodate life cycle wellhead pressures.

The fluid from the wells would flow to the inlet test / production manifold via a 4 flow lines which shall be installed during the construction and commissioning phase. Inlet manifold design would allow independent well testing through the test separator to ensure proper production allocation to the various wells. The fluids would flow from the manifold to the production processing facilities to enable it separate, stabilize, stored and metered before being exported via an export pipeline. The separators shall separate free water from the oil and remove the gas from the liquids.

The facility shall have HP, MP, LP and Test separators, inlet and outlet shutdown systems to allow EPF isolation in case of emergency or for maintenance purposes. Flexibility not to flare produced natural gas shall be incorporated in to the design; hence, there shall be connections on gas outlet piping of HP, MP, LP and Test Separator. All fluids processed shall pass through a well designed LACT unit at the battery limit to account for volumes delivered to Ovade / Ogharefe flowstation.

100 MMSCFD or more of associated gas from OPL 283 and other adjoining fields shall be compressed and sent to the existing Pan Ocean gas plant facility at Ovade-Ogharefe, Delta State for processing. The gas flow shall also be measured at the battery limit using a 10 installed Daniel Orifice Gas Meter or similar DPR accepted gas measuring device.

It is expected that the wells will produce dry for the initial 1 year, however, provision shall be made to hold up to 2% produced water in a storage tank which shall be treated to be virtually free of oil (