CNOOC, Oryx have discovery off Congo (Brazzaville)

CNOOC Ltd. made an oil discovery and spudded a second exploratory well on the Haute Mer A license offshore Congo (Brazzaville), said 20% interest owner Oryx Petroleum Corp., Calgary.

The E-1 exploratory well targeting the Elephant (formerly Xiang) prospect is to be tested in early 2014 as part of a multiwell drilling and testing program on the license.

Oryx said overall results are consistent with expectations. Reservoir quality, crude quality, and viscosity appear to be better than anticipated while the areal extent of the reservoir appears to be slightly smaller than expected.

The Jasper Explorer drillship drilled E-1 to a total depth of 2,497 m in 550 m of water 80 km offshore. E-1 was targeting a deeper turbiditic Tertiary play similar to the play being exploited in fields adjacent to the Haute Mer A license area, such as the Total-operated Moho Bilondo producing field and the Chevron-operated Block 14 in Angola. E-1 primary targets were the Tertiary Miocene N5 and N3 reservoir intervals.

The E-1 well was drilled 4.5 km southeast of the Libonolo Marine-1 (LIBM-1) well drilled in 1997 by Elf Congo. LIBM-1 resulted in a discovery in the N5 interval. Excellent reservoir quality was encountered with heavy 14° gravity oil present.

Based on the preliminary data, E-1 encountered 30 m of gross interval (20.3 m net) of crude oil and 102 m of gross interval (58.8 m net) of natural gas in the N5 interval and 16 m of gross interval (9.2 m net) of crude oil in the N3 interval. It encountered water in other secondary targeted intervals.

Porosity is 24-36% in N5 and 27-33% in N3. Preliminary analysis of oil samples recovered from the crude oil bearing sands indicates that the crude oil is 18° gravity.

Reservoir size and immovable oil with high viscosity and low recoverability are the principal geologic risks associated with the prospect, Oryx said. If preliminary analysis is confirmed during testing, the E-1 well will be considered a successful commercial discovery consistent overall with predrill estimates.

The drillship, under contract for a two plus one drilling campaign, has spudded the H-1 well targeting the Horse prospect (formerly Ma). H-1 will be drilled to a total depth of 5,462 m in 1,038 m of water 80 km offshore in the western part of the license. Primary targets are the Tertiary N3 reservoir, a turbiditic play, and the deeper Cretaceous reservoir, an Albian carbonate play.

Other wells drilled in adjacent license areas targeting the Albian age cretaceous carbonate play have yielded discoveries by Total at N’Kossa, N’Soko, Moho Bilondo, and Moho North and by Chevron on Block 0 in adjacent Angola (Cabinda). Oil quality is anticipated to be light in the Cretaceous and heavier in the Tertiary. Oryx expects the well will reach total depth in late 2013.

The Jasper Explorer will test H-1 well, if successful, before testing the Elephant discovery. Subject to a successful test at E-1, CNOOC intends to drill the first appraisal well in the license area on the Elephant discovery. The appraisal well will likely test potential outer extension of the discovered N5 sands while also probing similar channel sands in the N5 interval.

Related Articles

ONGC Videsh unit drills horizontally in Russia’s Snezhnoye field

07/24/2015 Imperial Energy Corp. PLC, a subsidiary of ONGC Videsh Ltd., has drilled two horizontal wells in the Naunak formation of Snezhnoye field in the Tom...

EQT reports high IP from Utica dry gas well

07/24/2015 EQT Corp., Pittsburgh, said a deep, dry gas Utica well averaged 72.9 MMcfd with an average flowing casing pressure of 8,641 psi during a 24-hr deli...

Separate Murkowski bill addresses crude exports, OCS revenue sharing

07/24/2015 US Senate Energy and Natural Resources Committee Chair Lisa Murkowski (R-Alas.) introduced legislation that would end the ban on US crude oil expor...

Statoil’s Julius well discovers gas, condensate in King Lear area

07/23/2015 Statoil ASA said its Julius exploratory well, drilled in the King Lear area of the Norwegian North Sea, has discovered gas and condensate (OGJ Onli...

BHP Billiton still interpreting deepwater Trinidad and Tobago seismic data

07/22/2015 BHP Billiton, the operator of all of the deepwater blocks awarded by Trinidad and Tobago, has said it will decide how many wells it will drill base...

BLM extends comment period for Colorado oil, gas project’s EA

07/21/2015 The US Bureau of Land Management has extended the comment period for a preliminary environmental assessment (EA) of a proposed oil and gas project ...

Geophysical surveys due onshore Tanzania

07/21/2015 Tanzania Petroleum Development Corp. has let a contract to CGG for geophysical surveys over two onshore areas in preparation for future licensing r...

URTeC: Shell’s Hackbarth says unconventional innovation begins with data

07/20/2015 Operators should resist the impulse to pull back on investments in technology despite a down oil market, said Claudia J. Hackbarth, manager, unconv...

Nile Delta gas strike due on production


Eni SPA said a natural gas discovery on the Nooros prospect in Egypt will be placed on production at an unspecified rate within 2 months.

White Papers

UAS Integration for Infrastructure: More than Just Flying

Oil and gas companies recognize the benefits that the use of drones or unmanned aerial systems (UAS) c...

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
Available Webcasts

Operating a Sustainable Oil & Gas Supply Chain in North America

When Tue, Oct 20, 2015

Short lead times and unpredictable conditions in the Oil & Gas industry can create costly challenges in supply chains. By implementing a LEAN culture of continuous improvement you can eliminate waste, increase productivity and gain end-to-end visibility leading to a sustainable and well-oiled supply chain.

Please join us for this webcast sponsored by Ryder System, Inc.


On Demand

Leveraging technology to improve safety & reliability

Tue, Sep 22, 2015

Attend this informative webinar to learn more about how to leverage technology to meet the new OSHA standards and protect your employees from the hazards of arc flash explosions.


The Resilient Oilfield in the Internet of Things World

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.


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


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