RE: Exciting times29 Nov 2020 14:17
· BPC's geotechnical risk mitigation strategy for the drilling and evaluation of the Perseverance #1 well seeks to effectively de-risk each of the pre-drill risk elements - top seal, reservoir quality, oil quality and source rock presence/maturity. However, as previously noted, the primary objective of the well is to establish the presence and distribution of hydrocarbons throughout the targeted reservoirs.
· Accordingly, BPC has developed a comprehensive formation evaluation plan that prioritises the measurement, logging and acquisition programme to fit this core objective. Considerable attention has been placed on the reliability, robustness and configuration of the Measurement While Drilling (MWD) / Logging While Drilling (LWD) tool. This includes redundancy/duplication in the data gathering processes, and planning for tool assembly in all potential hole sizes. High bandwidth recording will be maintained downhole at all time to be retrieved at each trip/bit run to provide real-time drilling results.
· In the normal course of drilling, a full suite of logging and measurement while drilling logs (gamma-resistivity, sonic density and neutron) will be acquired, thereby providing formation data and a synthetic seismogram (sonic-density), both of which will be used to calibrate real time well data to identified seismic markers to correlate the reservoir targets and age each of the penetrated horizons. In all instances, formation evaluation while drilling (FEWD) tools will gather data on temperature, formation pressures, porosity (including fractures), oil and water saturations and total thickness of the potential hydrocarbon bearing reservoirs regardless of outcome - further augmented by a wide range of wireline logging and sampling should results while drilling be merited.
· The comprehensive formation evaluation data retrieved from Perseverance #1 can be utilised to update the pre-drill volumetric estimates in a successful outcome scenario.