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Rockhopper Exploration Provides Exploration Update
Friday, May 22, 2009
Rockhopper Exploration plc, the AIM listed North Falkland Basin oil and gas explorer, provides an update with regard to ongoing activities in its exploration licences.
A new Competent Persons Report compiled by RPS Energy (the CPR), the first update since the time of admission to AIM in 2005, has been received.
CPR and Operating Highlights
CPR now includes eight oil prospects on Rockhopper acreage with a combined prospective resource of (unrisked) 1 billion barrels recoverable
CPR reclassifies a previous exploration well, 14/5-1A, drilled by Shell, as a gas discovery The resultant discovery has been named the Johnson structure and is now classified as a Contingent Resource
CPR confirms the original well report produced by Shell which identifies 165m net gas pay at14/5-1A
Environmental Impact Statements have been submitted to the regulatory authorities for all Rockhopper operated licences
Rig rates are continuing to ease and availability of suitable drilling units is increasing
Contingent Gas Resource
Within the CPR, RPS Energy has classified the Johnson structure, which lies in approximately 500m of water in licence PL032, as a Contingent Gas Resource. This follows extensive re-interpretation by Rockhopper of well 14/5-1A (drilled by Shell in 1998) which encountered significant quantities of gas. Well 14/5-1A is now classified by RPS as a gas discovery. The 3D seismic collected by Rockhopper in 2007 demonstrates a previously unmapped structural closure (Johnson) which is penetrated by well 14/5-1A. In the final well report for 14/5-1A, Shell recognised 165 meters of net pay. These are the first Contingent Resources declared in the Falkland Islands area.
Contingent Gas Resources (recoverable) as identified by RPS Energy within the Johnson structure are:-
Johnson structure - Trillion Cubic Feet (Tcf)
Best Estimate: 1.6
High Estimate: 7.9
Mean Estimate: 3.4
The main remaining contingencies identified in the CPR are further delineating the physical extent of the structure and proving a higher quality reservoir.
Prospective Resources - Oil
In addition to the Contingent Gas Resource, RPS considered eight oil prospects on Rockhopper operated acreage and two on non-Rockhopper operated acreage.
Those on Rockhopper operated acreage could contain a total P50 recoverable of 998 million barrels on an unrisked basis. In addition to those eight prospects, Rockhopper has mapped 15 additional prospects which were not considered by RPS as they are unlikely to be targeted in the first round of drilling. However, they do provide scope for significant additional upside in the event of an oil discovery in the basin.
Previous economic studies carried out for Rockhopper by Barrett Petroleum Services in 2004 and by Scott Pickford at the time of the admission to AIM indicate that the North Falkland Basin could be economically viable at oil prices as low as USD 30 per barrel
Source Rock Modelling
The CPR outlines the basis for two proven source rocks in the North Falkland Basin, one mature for oil, the other gas. The oil source is younger and shallower than the gas source.
Basin modelling work in the northern part of the North Falkland Basin confirms that the Lower Cretaceous source rock, which generated the oil recovered in well 14/10-1, is likely to be mature over a larger area than previously thought, extending just north of the northern most boundary of licence PL032. This result suggests that a large area of the Lower Cretaceous oil mature source rock is likely to be present throughout licence PL032.
The source rock generating the gas recovered in well 14/5-1A is older than the Lower Cretaceous source and is believed by Rockhopper to be Jurassic or early Cretaceous.
New basin modelling work in licences PL023 and PL024 indicates a higher probability of mature source rocks than previously thought and results indicate that these source rocks could be mature for oil and gas.
Operational Update
The market for mid-water semi-submersible drilling rigs continues to ease with a number of units now available in the UK North Sea. In addition, day rates for suitable semi-submersible drilling rigs have fallen significantly over the past 12 months.
Environmental Impact Statements have been submitted to the relevant authorities for all Rockhopper operated licences, while site survey work on the Ernest structure indicates no geohazards. Reprocessing of the short offset data on licences PL032 and PL033 for site survey purposes is now complete.
Executive Chairman, Pierre Jungels, commented:
The new RPS Energy CPR gives verification of the broad spread of our portfolio. Not only do we have the first discovery and contingent resource declared in the Falkland Islands area, but also we have over 20 structural oil prospects, 8 of which have been independently verified. This clearly demonstrates what the Directors feel is the highly attractive prospects of Rockhopper.
Johnson is now recognised as a contingent resource while Sea Lion and Ernest are now our foremost oil exploration targets, both with a 23% chance of success, not taking into account the positive CSEM outcome on Ernest, which we believe further improves the chance of success.