Exoma-CNOOC hails Galilee basin oil resource

By OGJ editors

A combine of Exoma Energy Ltd., Brisbane, and an onshore unit of China National Offshore Oil Corp. have a large indicated oil discovery in the Galilee basin of central Queensland, Australia.

Independent well log and petrophysical evaluation has confirmed that the Katherine West structure may contain as much as 177 million bbl of oil in place and that the adjacent, undrilled Katherine East prospect may contain up to 458 million bbl of oil in place. Katherine East is to be drilled in 2012.

Exoma and CNOOC Galilee Gas Co. Pty. Ltd. hold 50-50 interests in five exploration permits that total 27,000 sq km near Longreach, Queensland. They are ATPs 991, 996, 999-P, 1005, and 1008. The lands are also prospective for coalbed methane.

CNOOC farmed into its 50% interest in late 2010 as the company’s first relatively

large-scale exploration of overseas onshore unconventional gas. Consulting engineers found that the permits could contain as much as 2.83 trillion cu m of CBM and shale gas resources, including 56 bcm of CBM.

The Katherine West resource estimates are based on independent analysis of log results from Exoma’s Katherine-1 well drilled in August-September 2011, Ampolex’s 1985 Toobrac-1 well, and Exoma’s reinterpretation of seismic data over the structure.

Katherine-1 was drilled to 1,207 m in ATP-999-P to test Exoma’s modeled extension of the Toobrac-1 oil show. The well intersected a number of oil zones totaling 10 m of potential oil pay. Log analysis indicates that the well intersected oil columns of 4 m in the Adori sandstone and 6 m in the Lower Hutton sandstone, both of Jurassic age.

Exoma was unable to recover a representative sample from Katherine-1 due to adverse well conditions, but oil shows were observed and tested in the drill cuttings through the Adori and Hutton sandstones and a sample of crude oil was recovered from the drilling fluid. Interpretation of the Katherine-1 logs confirms Exoma’s model of the Hutton sandstone as an oil-filled stratigraphic trap against a granite basement high.

The log analysis shows that the Hutton oil column is in a permeable reservoir zone and contains free oil able to be flowed. Log interpretations of the Adori at Katherine-1 and Toobrac-1 are less conclusive than those for the Hutton but indicate that the Adori contains oil and that potentially this oil may extend over the entire Katherine West structure.

The mean estimate of the total oil resource at Katherine West is 79 million bbl of oil. Reservoir properties and deliverability are yet to be established, and one of the objectives of the next well will be to move some of the above resource estimates for Katherine West into the reserves category.

Exoma will drill a core well, Katherine-2, in early 2012 to improve its understanding of reservoir quality and the extent of the oil fill in the Adori and to test Hutton deliverability.

Exoma said the discovery validates its stratigraphic oil play concept in its Galilee basin tenements and “forms the basis of our exploration planning for other oil targets in ATP 999 and ATP 1005.”

Mapping based on seismic data shows the Adori and Hutton sandstone closures at Katherine East each cover 25 sq km if those sandstones are in place.

Related Articles

Tullow Oil provides production update on Jubilee, other fields

07/01/2015 Tullow Oil PLC reported that gross production for the Jubilee field offshore Ghana averaged 105,000 b/d in this year’s first half, up from 102,000 ...

OGJ Newsletter

06/29/2015

Security through change

06/29/2015

At the start of this month the US Army published its "Energy Security & Sustainability (ES2) Strategy" report. 

Mubadala starts production at Nong Yao in Gulf of Thailand

06/29/2015 Mubadala Petroleum, Abu Dhabi, started production on June 17 from its Nong Yao oil field in the G11/48 concession of the southern Gulf of Thailand.

Junex provides update on Galt oil property drilling

06/26/2015 Junex Inc., Quebec City, Que., said it is finalizing construction of the surface drilling pad for the Junex Galt No. 5 horizontal well that the com...

Lundin spuds three wells offshore Norway

06/24/2015 Lundin Norway AS, a wholly owned subsidiary of Lundin Petroleum AB, spudded three wells: its second Alta appraisal well in the Barents Sea, an appr...

WPX Energy adds to acreage in Gallup oil play

06/22/2015 WPX Energy Inc., Tulsa, has added to its San Juan Gallup acreage in New Mexico with the purchase of another 14,300 net acres from an undisclosed se...

YPFB Andina makes oil discovery in Bolivia’s Boqueron field

06/22/2015 YPFB Andina reported an oil discovery in Boqueron field in Bolivia’s Santa Cruz region. The Boqueron 4D well reached a total depth of 3,237 m and h...

US crude export debate increasingly geopolitical, EIA conference told

06/22/2015 The ongoing debate over whether more US crude oil exports should be authorized has more in common with conditions in the 1980s when supplies were a...
White Papers

Solutions to Financial Distress Resulting from a Weak Oil and Gas Price Environment

The oil and gas industry is in the midst of a prolonged worldwide downturn in commodity prices. While ...
Sponsored by

2015 Global Engineering Information Management Solutions Competitive Strategy Innovation and Leadership Award

The Frost & Sullivan Best Practices Awards recognise companies in a variety of regional and global...
Sponsored by

Three Tips to Improve Safety in the Oil Field

Working oil fields will always be tough work with inherent risks. There’s no getting around that. Ther...
Sponsored by

Pipeline Integrity: Best Practices to Prevent, Detect, and Mitigate Commodity Releases

Commodity releases can have catastrophic consequences, so ensuring pipeline integrity is crucial for p...
Sponsored by

AVEVA’s Digital Asset Approach - Defining a new era of collaboration in capital projects and asset operations

There is constant, intensive change in the capital projects and asset life cycle management. New chall...
Sponsored by

Transforming the Oil and Gas Industry with EPPM

With budgets in the billions, timelines spanning years, and life cycles extending over decades, oil an...
Sponsored by

Asset Decommissioning in Oil & Gas: Transforming Business

Asset intensive organizations like Oil and Gas have their own industry specific challenges when it com...
Sponsored by

Squeezing the Green: How to Cut Petroleum Downstream Costs and Optimize Processing Efficiencies with Enterprise Project Portfolio Management Solutions

As the downstream petroleum industry grapples with change in every sector and at every level, includin...
Sponsored by
Available Webcasts


The Resilient Oilfield in the Internet of Things World

When Tue, Sep 22, 2015

As we hear about the hype surrounding the Internet of Things, the oil and gas industry is questioning what is different than what is already being done. What is new?  Using sensors and connecting devices is nothing new to our mode of business and in many ways the industry exemplifies many principles of an industrial internet of things. How does the Internet of Things impact the oil and gas industry?

Prolific instrumentation and automation digitized the industry and has changed the approach to business models calling for a systems led approach.  Resilient Systems have the ability to adapt to changing circumstances while maintaining their central purpose.  A resilient system, such as Maximo, allows an asset intensive organization to leverage connected devices by merging real-time asset information with other critical asset information and using that information to create a more agile organization.  

Join this webcast, sponsored by IBM, to learn how about Internet of Things capabilities and resilient systems are impacting the landscape of the oil and gas industry.

register:WEBCAST



On Demand

Taking the Headache out of Fuel License and Exemption Certificates: How to Ensure Compliance

Tue, Aug 25, 2015

This webinar, brought to you by Avalara, will detail the challenges of tax document management, as well as recommend solutions for fuel suppliers. You will learn:

-    Why it’s critical to track business partner licenses and exemption documents
-    The four key business challenges of ensuring tax compliance through document management
-    Best practice business processes to minimize exposure to tax errors

register:WEBCAST


Driving Growth and Efficiency with Deep Insights into Operational Data

Wed, Aug 19, 2015

Capitalizing on today’s momentum in Oil & Gas requires operational excellence based on a clear view of what your business data is telling you. Which is why nearly half* of oil and gas companies have deployed SAP HANA or have it on their roadmap.

Join SAP and Red Hat to learn more about using data to drive process improvements and identify new opportunities with the SAP HANA platform running on Red Hat Enterprise Linux. This webinar will also show how your choice of infrastructure impacts the performance of core business applications and your ability to achieve data-driven insights quickly and reliably.

*48% use SAP, http://go.sap.com/solution/industry/oil-gas.html

register:WEBCAST


OGJ's Midyear Forecast 2015

Fri, Jul 10, 2015

This webcast is to be presented by OGJ Editor Bob Tippee and Senior Economic Editor Conglin Xu.  They will summarize the Midyear Forecast projections in key categories, note important changes from January’s forecasts, and examine reasons for the adjustments.

register:WEBCAST


Emerson Micro Motion Videos

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