BNK Updates Saponis Poland Shale Gas Activities
BNK Petroleum Inc. has reported that it has received a portion of the core analysis back from the 3rd party contractors from both the Wytowno S-1 and Lebork S-1 wells, on the adjacent Slawno and Slupsk concessions.
The Wytowno S-1, Lebork S-1 and Starogard S-1 wells are being drilled by a subsidiary of BNK as Manager for Saponis Investments Sp z o.o..
Lebork S-1 well
BNK reported that data from the Lebork S-1 well was only from the sidewalls taken in the lower portion of the Ordovician and the Alum shale, as the whole core analysis from above these intervals is not yet completed. The additional core analysis data for the target intervals in the Lebork S-1 well, and the final core analysis reports for both wells are expected to be in by the end of August at which time the log analyses for both wells will be reprocessed with the core data.
Porosities: In the Lebork S-1 well the 47 meter thick Ordovician/Cambrian interval has porosity ranges from 0.98 to 5.2% averaging 4.0% and in the Wytowno S-1 well the 91 meter thick Lower Silurian target interval has porosity ranges of 1.1 to 4%, averaging 3.0% and the 40 meter thick shallower Lower Silurian interval has a porosity of 5.6%.
Gas filled porosity: In the Lebork S-1 well gas filled porosity ranges from 0.8 to 3.9%, avg 1.8% of bulk volume in the Ordovician/Cambrian. In the Wytowno S-1 well the Silurian targets range from 0.3 to 1.6%, averaging 1.1% of bulk volume, with one shallower Silurian interval that has a value of 4.3% of bulk volume.
Desorption: The Lebork S-1 well had average desorption values of 40 Standard Cubic feet of gas per ton of rock, ("SCF/ton") over the Lower Silurian and 268 SCF/ton over the 47 meter Ordovician/Cambrian interval. The Lower Ordovician/Cambrian shale in Lebork S-1 had intervals as high as 451 SCF/ton.
Wytowno S-1 well
The Wytowno S-1 well had average desorption values of 124 SCF/ton in the Lower Silurian target interval and 77 SCF/ton in the shallower Lower Silurian interval. For comparative purposes BNK said that its the Oklahoma Woodford shale Tishomingo field has average values of 104 SCF/ton.
Thermal maturity: The Wytowno S-1 thermal maturity values were estimated from the reflectance of pyrobitumen and the Thermal Alteration Index (TAI) obtained from Palynological (micro-paleo) analysis of the drill cuttings, which both equate to an Ro of 1.8 in the Lower Silurian. The TAI for the Lebork S-1 cuttings from the Lower Silurian to Ordovician/Cambrian are also equivalent to a Ro of 1.8, which places the thermal maturity for both wells in the dry gas window.
TOC: In Wytowno S-1 the total organic carbons ("TOCs") are variable across the Lower Silurian target interval, ranging from 0.1 to 1.3, TOC by percent weight.
The TOC data from the Lebork S-1 well is not yet available, however both the log calculated values and SEM image analysis values indicate multiple times higher TOCs across the Ordovician/Cambrian shales.
Starogard S-1 well
BNK also reports that the Starogard S-1 well on the Starogard concession in Poland, began drilling on July 16th, 2011.
The well is currently drilling at a depth of about 1,700 meters after installing 690 meters of steel casing and cementing it from the bottom to the surface. This depth is below the potential fresh water intervals and was installed to isolate and protect them. Another string of steel casing will be installed and cemented at an approximate depth of 2,050 meters, prior to drilling ahead to the estimated core point. At the core point, the BNK is planning to core the rest of the well for analysis of the formations.
Completion activity for the Lebork S-1 and Wytowno S-1 wells are scheduled to begin in mid-September. BNK is also reviewing the possibility of performing the completion of the Starogard S-1 well in conjunction with the two other wells. Well results and equipment availability will determine the timing.
BNK stated that is utilizing best industry practices for drilling and testing our wells, including utilizing bladders to hold the fresh water for fracture stimulating the well instead of digging a large pit. The arrival of the bladders will determine the start of the completion activity. The bladders ensure complete isolation from surface soil and water, reduce truck traffic to and from the site and increase safety. The flowback fluids are flowed directly into self-contained steel tanks on location. The BNK is also fracture stimulating utilizing the most environmentally friendly additives currently available from Schlumberger in Poland.
BNK has secured approval to acquire approximately 740 km of 2D seismic of which 407 km is on the Saponis and 333 km is on the Indiana concessions. In addition, the three Indiana and three Saponis concessions were extended to provide BNK enough time to acquire the seismic prior to drilling the first three wells in Indiana and the second three wells in Saponis. BNK anticipates seismic acquisition to commence in the 4th quarter of 2011. A seismic contractor has been selected and permitting for the Indiana seismic program is scheduled to start immediately. The objective of the seismic program is to further define basin structure and burial history as well as aid in the selection of individual well locations.
Incorporating the micro-paleo and high-resolution stratigraphic analysis into the geological picture showed that the Wytowno S-1 well was drilled on a localized paleo-topographic high and what was originally interpreted as Ordovician/Cambrian shales are actually Lower Silurian hot shale intervals. The intervals in the Lebork S-1 well have also been revised on the basis of the micro-paleo and high-resolution stratigraphic analysis, resulting in slightly different thicknesses of the various intervals. In addition to the seismic program, BNK has contracted a depth to crystalline basement study. The study will cover a large portion of northeast Poland, fully encompassing the Saponis and Indiana owned acreage.Interpretation of the study is expected to allow us to better understand general basin geometry,identify sub basins and locate significant basement related faulting. The study is slated for completion by early September 2011.
Wolf Regener, BNK's President and CEO commented "We are gaining a better understanding of the basin and are cautiously encouraged by what we are seeing from this early data. The Ordovician/Cambrian interval in the Lebork S-1 well looks better than any other log we have seen in the basin so far."
BNK owns approximately 26.7 per cent of Saponis with remaining ownership held by Rohol-Aufsuchungs Aktiengesellschaft,("RAG") Sorgenia E&P SpA and LNG Energy through its subsidiary.
BNK holds 195,000 net acres in the Baltic Basin of Poland through Saponis and a further 880,000 adjacent net acres through Indiana Investments Sp z o.o., it's wholly owned subsidiary.
Source: BNK Petroleum