CALGARY�Corridor Resources Inc., Halifax, NS, says a test on the McCully wildcat 7 miles northeast of Sussex, NB, found more than 130 ft of net natural gas-bearing sand within a 1,115.5-ft gross sand/shale sequence between 6,660 ft and 7,775 ft.
The well was originally announced in September (OGJ Online, Sept. 25, 2000).
McCully-1 was drilled to 8,717 ft TD in October and was production tested in November. Corridor says initial analyses of well logs, production tests, and 3D seismic data indicate a postulated resource potential of 300 bcf. Corridor Pres. Norm Miller said the discovery appears to be much larger than anything expected onshore in Canada�s Maritime Provinces.
McCully is 35 miles from the Maritimes & Northeast Pipeline, which Sable Island gas area to markets Maritimes and New England areas. Partners in McCully hope to prove sufficient reserves to develop infrastructure to hook into the M&NP system.
McCully-1 was air drilled to 2389 m; it flowed 2.4 MMcfd of gas during drilling operations. Below that point, the well was drilled using a conventional heavy drilling mud.
The formation is overpressured, with the pressure in the main gas-bearing reservoir at more than 4,100 psi, or 600 psi greater than the normal reservoir pressure for this depth, said Corridor. During production testing operations, the bottom sand flowed 750 Mcfd with no water for 3 days.
Corridor describes the McCully prospect as a large anticlinal structure with simple 4-way closure, covering at least 7,000 acres. It says the overlying Hillsborough unconformity provides a regional stratigraphic trap across this prospect.
Adams Pearson Associates Inc., Calgary, determined the reservoir was damaged during drilling operations and should be capable of higher rates of production than were achieved during the initial production test, said Corridor. An attempt to hydraulically fracture the reservoir was unsuccessful, and current plans are to recomplete the well as a "barefoot" producer.
Corridor expects to drill several stepout wells, starting in mid-January.
Corridor and Potash Corp. of Saskatchewan Inc. are partners in the McCully play.