Antrim to complete East Causeway wells in North Sea

By OGJ editors
HOUSTON, Aug. 18 -- Antrim Energy Inc., Calgary, says it will complete for production two East Causeway wells in the UK North Sea.

The decision followed positive test results for the 211/23d-17z well, which flowed on final test at multiple stabilized rates of up to 7,500 b/d of light, sweet oil at 1,006 psi through a 42/64-in. choke. The oil also has a low gas-oil ratio, the company said.

The well, drilled horizontally and at a high angle through the Middle Jurassic Brent Group of sandstones, intersected several reservoirs in the Ness and Tarbert formations in two separate fault compartments. The Brent group consists of the Oseberg main reservoir and the Rannoch, Etive, Ness, and Tarbert formations.

This second and final test, performed on the Ness formation in the western fault compartment, is similar to that recovered from the initial test announced Aug. 3. The first test recorded stabilized rates of as much as 7,000 b/d of sweet, 32° gravity oil from the Tarbert formation, also from the western fault compartment. No water was tested from either zone. The Ness formation consists of a series of delta plain channel sandstones braided with coal beds. Sand lobes vary in width from 50 to 400 m and in thickness from 1.5 to 15 m.

The test rates do not include the 8,100 b/d of oil flow rate previously recorded from the Ness formation in the suspended 211/23b-11 well in the eastern fault compartment. It is Antrim's intention to complete for production the well from the Ness formation in the eastern fault compartment. This Ness reservoir was also intersected by the 211/23d-17z well but was not tested.

Antrim, which operates the wells and holds a 65.5% interest, will now analyze the flow rate and pressure data from the tests to assess the full productivity and reserve potential of the Ness Sandstone intersected by both wells, the two zones tested by 23d-17z, and several other zones that remain untested in 23d-17z.

Log data through the horizontal section of the well bore indicates a net pay of 77 ft, rather than 57 ft as reported July 24.

The 23d-17z well also is being suspended, pending final development, and the drilling rig was to be released this week.

Related Articles

AFPM launches web site to recruit refining, petchem employees

09/17/2014 The American Fuel & Petrochemical Manufacturers launched a workforce development web site to provide information for anyone seeking a career in...

Bill Barrett to divest Powder River, Piceance properties

09/16/2014 Bill Barrett Corp., Denver, reported that it has agreed with several undisclosed buyers to sell the majority of its Powder River basin acreage and ...

AAPG ICE: Turkey sees early shale oil development

09/15/2014 Turkey is slightly larger than the state of Texas geographically, yet the country has only seen 4,400 wells drilled since 1940. While Texas’ oil hi...

Giesler joins Miller as chief executive

09/15/2014 Carl F. Giesler Jr. has joined Miller Energy Resources Inc., Knoxville, Tenn., as chief executive officer, replacing Scott M. Boruff, who is now ex...

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