ENI plugged and abandoned wildcat Shwe Nan Htike 1 in block RSF-5, located in onshore Central Burma Basin, around late April 2020, with results unreported. It is understood that the well ran into a stuck pipe incident while operating at around 3,535 m, shallower than the PTD of approximately 3,800 m. Prior to the incident, wireline logs were acquired over two separate intervals (2,675-2,150 m and 2,757-3,420 m).    Operations were ongoing in late March 2020, with the well drilled to approximately 2,800 m and wireline survey ongoing.  Shwe Nan Htike 1 was spudded around mid-January 2020 and was likely targeting the Miocene and Oligocene sandstone reservoirs in the deeper section of the Ondwe structure. The well was drilled using the "AD-1" land rig operated by Asia Drilling.  Operations were originally expected to be completed in mid-2020, including abandonment after drilling. In case of positive indications during drilling, the operator was planning to conduct well testing at a later time, possibly followed by a second exploration well targeting another section of the structure.  An official ceremony for drilling commencement of the well was held on 30 December 2019, attended by the Myanmar Deputy Minister of Electricity and Energy.  The operator conducted public consultation activities with the local communities in March and May 2019, followed by the submission of Environmental Impact Assessment (EIA) report for the drilling plan in July 2019. According to the EIA report, the company proposed two wells, at the time tentatively named as "Ondwe Deep 1" and "Ondwe Deep 2".  Eni previously completed a 487 sq km of 3D seismic survey in January 2018. The survey, commenced on March 2017, was carried out by Geofizyka Torun. Operations were temporary halted in early July 2017 due to rainy season and resumed in late October 2017.  The block contains the Ondwe gas discovery, a NW-SE trending faulted anticline located in the southernmost part of the prolific trend that produced several fields such as Chauk-Lanywa and Yenangyaung. At least 12 wells have been drilled in the Ondwe structure between 1912 and 2000, with three wells encountering minor gas in shallow Miocene sandstones of the Obogon and Kyaukkok formations.  RSF-5 is one of two blocks that Eni holds onshore Myanmar. The other block is PSC K, located in the Bago Yoma-Sittoung Basin. Both blocks were officially awarded by MOGE on 30 July 2014 to Eni Myanmar BV (90%, operator) and Myanmar Petroleum Exploration and Production Ltd (10%).  After the initial study period, the commencement date for PSC K was on 25 January 2016 while for RSF-5 it was on 1 January 2017. Exploration period will be for six years, subdivided in three phases. The initial exploration period (three years) in RSF-5 expired on 31 December 2019 but it was automatically extended by two years, due to the ongoing drilling activity (first extension period). The second and final extension period, if warranted, will run from 2021 to 2022.  Background Information  RSF-5 is located in the Magway Division and the nearest oil fields are to the west of the block, the Minbu and Htaukshabin oilfields. The block was previously awarded to Exspan Myanmar Inc, a wholly owned subsidiary Indonesian P.T. Medco Energi Corp, as operator and 100% holding on 14 July 1997 (together with blocks EP-1 and MOGE-3). Exspan Myanmar Inc, acquired of 75km of 2D seismic over the Ondwe oil-prone structure between February to March 1999. Exspan Myanmar Inc plugged and abandoned Northwest Ondwe 1 (TD at 2,314m), as an uncommercial gas well on 14 January 2001. The well tested gas in one of the sands interval with trace gas recorded. The result discouraged Exspan from further testing the remaining sandstone intervals. The well was primarily targeting sandstones of the Lower Miocene Pyabwe Formation (below 914m) and the Upper Oligocene Okhmintaung and Upper Padaung Formations (below 1,524m). Secondary objectives were sandstones of the Oligocene Lower Padaung and Kyaukkok Formations.   The prominent structure in this block is the Ondwe structure. Gravity and surface geology suggest that the regional stratigraphic correlation indicates the upper Tertiary formations of the Ondwe structure are thickening towards the south and east in the inner Myanmar Tertiary Belt. The Ondwe structure is a gently pitching broad domal structure and is compartmentalized into a number of fault blocks by oblique and cross faults. It is bounded by Magwe syncline to the SW and Yenanyaung syncline to the NE. It is separated from oil producing Yenangyaung anticline by a saddle. The oil bearing Kanni Dome and Htaukshabin structures are located west of the Magwe syncline.
Shwe Nan Htike-1 nfw. (Eni 90% op., MPRL 10%), RSF-5, onshore in Central Burma Basin, ops terminated late Apr '20, results n/a, AD-1 rig. Stuck pipe at 3535m. PTD was ca. 3800m, target Miocene + Oligocene sst in deeper sections of the Ondwe structure. 