cr137905

Glenaras 28 (GA28) was drilled in the southern portion of Authority to Prospect (ATP) 2019, the areal extent of which has been subdivided into Potential Commercial Areas (PCAs) 314 and 315. The well is located approximately 65km northeast of Longreach in central Queensland and was designed to be a peripheral pilot production well on the southern margin of the greater Glenaras multi-lateral pilot. The primary objective of GA28 was to maximise water extraction from the coals and sands of the Late Permian Betts Creek Beds to enhance depressurisation of the coals for achieving commercial coal seam gas flow. Prior to drilling operations commencing, a 13 3/8 conductor casing was installed to 13.6mRT. GA28 spudded at 19:30hrs on 8th May 2022 with Silver City Rig 23. The 12-1/4 surface hole was drilled vertically to 203mRT into the Allaru Mudstone and 9-5/8 surface casing run and cemented to 199.85mRT. After setting surface casing, the 8-3/4 BHA was run in hole, the cement plug and 3m of new formation were drilled and testing of slow circulation rates (SCRs) occurred. Drilling of the 8-3/4 borehole then continued until the Total Depth of 1,038mRT was reached at 16:00hrs on 12th May 2022. The borehole was then wireline logged by Schlumberger to determine the 7 casing design, the hole was circulated clean and a mixed 7 casing string was run to 1034.63mRT. An integrated Stage Tool and Expandable Cement Packer (ECP) was placed immediately above the R1 Seam in the Upper Betts Creek Beds at 914.57mRT(top) to 920.29mRT (base). Beneath the ECP, 7 slotted casing was run across the entire length of the Betts Creek Beds to 1,034.63mRT to allow commingled production from the coals and sands of the full Betts Creek Beds section with the purpose of maximising water extraction and depressurisation of the coals. Above the ECP, the remainder of the hole was blanked off with 7 casing. Silver City Rig 23 was released at 11:00hrs on the 14th May 2022 with GA28 cased and suspended as a future peripheral pilot production well in the greater Glenaras multi-lateral pilot.