GSPC logs about 40 metres gross pay at well KG#28

Vol 10, PW 24 (05 Apr 07) Exploration & Production

Gujarat State Petroleum is encouraged by the emerging results of ongoing appraisal well KG#28 at eastern offshore shallow water discovery block KG-OSN-2001/3.

By the end of last week, GSPC had put in place a 9 5/8-inch casing and drilled to a depth of 4040 metres. TD is likely to be at least 5600 metres and reached in mid-May.

PETROWATCH learns plans are to “touch the basement if possible.â€‌ KG#28 is the first of three appraisal wells approved by the DGH to delineate the Deen Dayal discovery made by well KG#8.

From 4040 metres till TD, GSPC plans to drill an 8.5-inch hole and put in place a 7-inch casing. Preliminary indications reveal that KG#28 is going some way in confirming the discovery in KG#8.

After reaching 4040 metres, GSPC suspended drilling and took a “full suiteâ€‌ of logs from about 3800 metres downwards. “Logs indicate two or three sands with a gross thickness of between 35 and 40 metres,â€‌ adds a source.

“These sands correspond to what GSPC encountered in KG#17. They are probably an extension of the KG#17 sands.

â€‌ GSPC is encouraged that these sands, “are on a known structure (KG#8).â€‌ Likewise GSPC reports good news from rig Perro Negro 3, which is drilling exploration well KG#16 on another structure.

“Perro Negro 3 is drilling through the reservoir section and there are continuous gas shows,â€‌ we hear. Early this week, the drill bit had reached 4750 metres.

GSPC is now preparing to extract the fourth core sample from this well. “They’ve not yet sent the three previous core sections for analysis,â€‌ we hear.

“Those cores are still lying in their barrels at (GSPC’s shore base) Kakinada.â€‌ Currently, GSPC is drilling an 8.5-inch hole at KG#16.

Indications are that a 7-inch casing will be set until TD of around 5600 metres, which it hopes to reach later this month.