10.07.2015 Views

Prospectus re Admission to the Official List - Heritage Oil

Prospectus re Admission to the Official List - Heritage Oil

Prospectus re Admission to the Official List - Heritage Oil

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

RPS Energy<strong>Heritage</strong> <strong>Oil</strong> – Competent Persons ReportAPPENDIX B: SPE/WPC/AAPG/SPEE RESERVE/RESOURCE DEFINITIONS(Source: Society of Petroleum Engineers)The estimation of petroleum <strong>re</strong>source quantities involves <strong>the</strong> interp<strong>re</strong>tation of volumes and values thathave an inhe<strong>re</strong>nt deg<strong>re</strong>e of uncertainty. These quantities a<strong>re</strong> associated with development projects atvarious stages of design and implementation. Use of a consistent classification system enhancescomparisons between projects, groups of projects, and <strong>to</strong>tal company portfolios according <strong>to</strong> fo<strong>re</strong>castproduction profiles and <strong>re</strong>coveries. Such a system must consider both technical and commercial fac<strong>to</strong>rsthat impact <strong>the</strong> project’s economic feasibility, its productive life, and its <strong>re</strong>lated cash flowsPetroleum Resources Classification FrameworkPetroleum is defined as a naturally occurring mixtu<strong>re</strong> consisting of hydrocarbons in <strong>the</strong> gaseous, liquid, orsolid phase. Petroleum may also contain non-hydrocarbons, common examples of which a<strong>re</strong> carbondioxide, nitrogen, hydrogen sulphide and sulphur. In ra<strong>re</strong> cases, non-hydrocarbon content could be g<strong>re</strong>aterthan 50 per cent.The term ‘‘<strong>re</strong>sources’’ as used he<strong>re</strong>in is intended <strong>to</strong> encompass all quantities of petroleum naturallyoccurring on or within <strong>the</strong> Earth’s crust, discove<strong>re</strong>d and undiscove<strong>re</strong>d (<strong>re</strong>coverable and un<strong>re</strong>coverable),plus those quantities al<strong>re</strong>ady produced. Fur<strong>the</strong>r, it includes all types of petroleum whe<strong>the</strong>r cur<strong>re</strong>ntlyconside<strong>re</strong>d ‘‘conventional’’ or ‘‘unconventional.’’A graphical <strong>re</strong>p<strong>re</strong>sentation of <strong>the</strong> SPE/WPC/AAPG/SPEE <strong>re</strong>sources classification system is given below.The system defines <strong>the</strong> major <strong>re</strong>coverable <strong>re</strong>sources classes: Production, Reserves, Contingent Resources,and Prospective Resources, as well as Un<strong>re</strong>coverable petroleum.PRODUCTIONTOTAL PETROLEUM INITIALLY-IN-PLACE (PIP)DISCOVERED PIIPUNDISCOVEREDPIIPSUB-COMMERCIAL COMMERCIAL1P 2P 3P1CRESERVESProved Probable PossibleLowEstimateCONTINGENTRESOURCES2CUNRECOVERABLEPROSPECTIVERESOURCESBestEstimateUNRECOVERABLE3CHighEstimateInc<strong>re</strong>asing Chance of CommercialityRange of UncertaintyResources Classification Framework18MAR200800130115129

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!