Poland: Early core results from shales encouraging

By OGJ editors

Early core analysis results from shales in the Baltic basin are “cautiously encouraging,” said BNK Petroleum Inc., Camarillo, Calif.

The preliminary analyses by consulting engineers are for the Wytowno S-1 and Lebork S-1 wells on the adjacent Slawno and Slupsk concessions. The Ordovician-Cambrian interval in the Lebork S-1 well looks better than any other log BNK has seen in the basin, the company said.

The following data from the Lebork S-1 well is only from sidewalls taken in the lower part 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.

In Lebork S-1 porosity in the 47-m thick Ordovician-Cambrian interval averages 4% and ranges from 0.98% to 5.2% and in Wytowno S-1 porosity the 91-m thick Lower Silurian target interval averages 3% and ranges from 1.1% to 4% while porosity in the 40-m thick shallower Lower Silurian interval is 5.6%.

Gas-filled porosity in Lebork S-1 porosity ranges from 0.8% to 3.9% and averages 1.8% of bulk volume in the Ordovician-Cambrian. In Wytowno S-1 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.

Lebork S-1  had average desorption values of 40 scf/ton over the Lower Silurian and 268 scf/ton over the 47-m Ordovician-Cambrian interval. The Lower Ordovician-Cambrian shale in Lebork S-1 had intervals as high as 451 scf/ton. Wytowno S-1 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’s Oklahoma Woodford shale Tishomingo field has average values of 104 scf/ton.

Wytowno S-1 thermal maturity values were estimated from the reflectance of pyrobitumen and the thermal alteration index obtained from palynological (micropaleo) 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 an Ro of 1.8, which places the thermal maturity for both wells in the dry gas window.

In Wytowno S-1 the total organic carbon is variable across the Lower Silurian target interval, ranging from 0.1 to 1.3 wt %. The TOC data from the Lebork S-1 well are not yet available, but both the log- calculated values and SEM image analysis values indicate multiple times higher TOCs across the Ordovician-Cambrian shales.

Meanwhile, the Starogard S-1 well on the Starogard concession in Poland, in which the  company has an indirect 26.69% interest, was spud on July 16, 2011, and is drilling at 1,700 m after setting 690 m of surface casing. Another casing string will be set at 2,050 m before drilling to the estimated core point and coring the rest of the well.

Completion of the Lebork S-1 and Wytowno S-1 wells is to start in mid-September. The company 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.

The company will use bladders to hold the fresh water for fracture stimulating the well instead of digging a large pit.

BNK has secured approval to shoot 740 line-km of 2D seismic of which 407 line-km is on the Saponis and 333 line-km is on the Indiana concessions. In addition, the three Indiana and three Saponis concessions were extended to provide BNK enough time to shoot the seismic before drilling the first three wells in Indiana and the second three wells in Saponis. Seismic shooting is to begin in the fourth quarter of 2011.

Incorporating the micropaleo and high-resolution stratigraphic analysis into the geological picture showed that the Wytowno S-1 well was drilled on a localized paleotopographic high and what was

originally interpreted as Ordovician-Cambrian shales are actually Lower Silurian hot shale intervals.  The intervals in Lebork S-1 have also been revised on the basis of the micropaleo 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 the company to better understand general basin geometry, identify subbasins, and locate basement-related faulting. The study is slated for completion by early September 2011.

Related Articles

BHI: Shortened week sees 12-unit loss in US rig count

11/26/2014 The US drilling rig count fell 12 units to 1,917 rigs working as the country headed into the Thanksgiving holiday during the abbreviated week ended...

BHI: Oklahoma, Cana Woodford lead gains in this week’s rig count

11/21/2014 A week of mostly offsetting activity saw the US drilling rig count edged up a single unit to 1,929 rigs working during the week ended Nov. 21, Bake...

BHI: Gains in Utica, Ohio headline latest US rig count

11/14/2014 The US drilling rig count was up 3 units to reach 1,928 rigs working during the week ended Nov. 14, with notable gains in Ohio and more specificall...

American Energy unit adds SCOOP, STACK acreage in Oklahoma

11/13/2014 American Energy–NonOp LLC (AENO), an affiliate of American Energy Partners LP (AEP), Oklahoma City, has completed a series of transactions with Dou...

Continental testing Springer shale potential

11/03/2014 Four delineation wells operated by Continental Resources Inc. in Grady County, Okla., confirm potential of the Mississippian Springer shale in the ...

Continental, South Korean firm to jointly develop northwest Cana Woodford

10/27/2014 Continental Resources Inc., Oklahoma City, has formed a joint venture with a wholly owned US subsidiary of SK E&S Co. Ltd. to jointly develop a...

Marathon Oil sees promise in Oklahoma's Scoop, Stack plays

10/21/2014 Marathon Oil Corp. is using extended-reach laterals to improve initial production rates in the emerging South-Central Oklahoma Oil Province (Scoop)...

Woodford gathering, processing plans advance

10/16/2014 Tall Oak Midstream LLC subsidiary TOMPC LLC has secured financing for building and expanding Tall Oak’s gathering and processing in the central nor...

Exterran joins Woodford Express to build Oklahoma gas plant

10/14/2014 Exterran Holdings, Houston, will join Woodford Express LLC, a subsidiary of Xplorer Midstream LLC, Oklahoma City, to build a 210-MMcfd natural gas ...

White Papers

AVEVA NET Accesses and Manages the Digital Asset

Global demand for new process plants, power plants and infrastructure is increasing steadily with the ...
Sponsored by

AVEVA’s Approach for the Digital Asset

To meet the requirements for leaner project execution and more efficient operations while transferring...
Sponsored by

Diversification - the technology aspects

In tough times, businesses seek to diversify into adjacent markets or to apply their skills and resour...
Sponsored by

Engineering & Design for Lean Construction

Modern marketing rhetoric claims that, in order to cut out expensive costs and reduce risks during the...
Sponsored by

Object Lessons - Why control of engineering design at the object level is essential for efficient project execution

Whatever the task, there is usually only one way to do it right and many more to do it wrong. In the c...
Sponsored by

Plant Design for Lean Construction - at your fingertips

One area which can provide improvements to the adoption of Lean principles is the application of mobil...
Sponsored by

How to Keep Your Mud System Vibrator Hose from Getting Hammered to Death

To prevent the vibrating hoses on your oilfield mud circulation systems from failing, you must examine...
Sponsored by

Duty of Care

Good corporate social responsibility means implementing effective workplace health and safety measures...
Sponsored by

Available Webcasts


On Demand

Optimizing your asset management practices to mitigate the effects of a down market

Thu, Dec 11, 2014

The oil and gas market is in constant flux, and as the price of BOE (Barrel of Oil Equivalent) goes down it is increasingly important to optimize your asset management strategy to stay afloat.  Attend this webinar to learn how developing a solid asset management plan can help your company mitigate costs in any market.

register:WEBCAST


Parylene Conformal Coatings for the Oil & Gas Industry

Thu, Nov 20, 2014

In this concise 30-minute webinar, participants have an opportunity to learn more about how Parylene coatings are applied, their features, and the value they add to devices and components.

register:WEBCAST


Utilizing Predictive Analytics to Optimize Productivity in Oil & Gas Operations

Tue, Nov 18, 2014

Join IBM on Tuesday, November 18 @ 1pm CST to explore how Predictive Analytics can help your organization maximize productivity, operational performance & associated processes to drive enterprise wide productivity and profitability.

register:WEBCAST


US HYDROCARBON EXPORTS Part 3 — LNG

Fri, Nov 14, 2014

US LNG Exports, the third in a trilogy of webcasts focusing on the broad topic of US Hydrocarbon Exports.

A discussion of the problems and potential for the export of US-produced liquefied natural gas.

These and other topics will be discussed, with the latest thoughts on U.S. LNG export policy.

register:WEBCAST


Careers at TOTAL

Careers at TOTAL - Videos

More than 600 job openings are now online, watch videos and learn more!

 

Click Here to Watch

Other Oil & Gas Industry Jobs

Search More Job Listings >>
Stay Connected