Offshore Tindalo Find in SC 54 Could Contain Up to 24.5MM Barrels
Nido and its Joint Venture partner Kairiki have provided an update on the evaluation of the recent Yakal and Tindalo oil discoveries in Service Contract 54 (SC 54).
Highlights from this update are:
- Contingent resources independently confirmed for the Tindalo and Yakal discoveries.
- Up to 24.5 million barrels oil in place at Tindalo.
- Up to 10.7 million barrels oil in place at Yakal.
- Early revenue and key appraisal information may be generated by using a long-term production test at Tindalo-1.
Ms. Joanne Williams, Nido's Deputy Managing Director said, "The contingent resources confirmed at Tindalo and Yakal together with the opportunity for early cash-flow is very exciting, potentially creating a second revenue stream for Nido as early as 2010. The early appraisal information on reservoir productivity this could supply will also be critical for our future plans in the area as the Tindalo-1 well was not tested at the time of discovery. With a rig mobilized to the area, and subject to promising initial results from Tindalo, potential follow-up programs could include a Yakal production test or further drilling immediately afterwards."
Ms. Williams went on to say, "The jackup rig market has softened considerably since our drilling program in 2008 which makes it possible to economically accelerate the development in this way. Nido’s strategy is to exploit the opportunity that the lower rig rate environment
has created to appraise Tindalo and generate early cash-flow from the area. This initial project has the capacity to support a self-funded area development strategy where a portion of the cash-flow generated could be applied to fund additional potentially high value projects in the area such as Yakal and other discoveries and prospects in the area."
Oil Volumes Independently Reviewed
A detailed analysis of the drilling data, oil samples, pressures and wireline log data from the Yakal-1 and Tindalo-1 discovery wells which intersected the target Nido Limestone formation has indicated that the oil column heights penetrated in the wells are 78-93m and 124-144m, respectively. In addition, a detailed evaluation of the reservoir properties using the wireline logs from both of the wells (including some non-conventional logs never before run in any Palawan Basin well) has provided an improved understanding of the porosity and net pay of the reservoir and resulted in a substantial increase in estimated oil in-place volumes for the two discoveries. This potentially has a follow-on impact to similar prospects in the immediate area.
The information has been reviewed by independent consultants, ISIS Petroleum Consultants Pty Ltd ("Isis"). The resources discovered by the Tindalo-1 and Yakal-1 wells are defined as Contingent Resources in the Development Pending sub-class under the Petroleum Resources Management System approved by the Society of Petroleum Engineers. The SC 54 Joint Venture will build static and dynamic reservoir models based on the Isis depth mapping of the 3D seismic data over the Yakal-1 and Tindalo-1 structures. The dynamic model will provide a sound basis for establishing the most likely recovery factors for the Yakal-1 and Tindalo-1 oil pools.
Based on production histories of surrounding analogous oil fields (such as Nido A, Nido B and Matinloc, in Service Contract 14), Nido estimates that recovery factors for the Tindalo and Yakal oil pools are expected to be in the range 35% - 45%.
The oil volumes identified at Tindalo and Yakal demonstrate encouraging economics for commercialisation via either single well production through a jackup drilling rig or a "cluster" development option aggregating several fields, including Tindalo and Yakal, into a single
production facility for concurrent production.
While the Joint Venture has yet to make a definitive choice, the most simple and cost effective solution to rapidly commercialize the opportunity is to conduct a production test at Tindalo-1 through a jackup drilling rig to appraise the well productivity over an initial period of several months. In the event of a successful test, oil produced during this period would be collected in an offset tanker and then sold generating early cash-flow from the area. At the end of the production test, Tindalo-1 could either be suspended pending a phase 2 "cluster" development in the area or continue to produce through the drilling rig until end of field life. Tindalo-1 could be potentially brought to production in this way within 6 to 9 months of a favorable final investment decision by the Joint Venture.
Next steps to progress this option (pending the appropriate approvals) are detailed subsurface modelling studies to more accurately predict the likely production rates, refine volume estimates and allow for reserves certification. In parallel, engineering design work and contract tendering with a rig, tanker and ancillary service providers would also be completed prior to the Joint Venture making a final investment decision.