Saka Energi has likely completed testing operations at the Tambakboyo 2 (TBKY 2) well in the Pangkah PSC, located in the offshore East Java Basin, as the âHai Yang Shi You 937â J/U rig was demobilized in early October 2018. The well has been earlier reported as an oil and gas discovery. Likely five DSTs were conducted on the well.  According to oil and gas regulator SKK Migas, the fourth DST flowed hydrocarbons from the Miocene Kujung Formation in early September 2018.  The discovery was announced by operator Saka Energi on 31 August 2018, when the well was reported to have flowed oil and gas from the Tuban, Kujung I and Ngimbang carbonate formations after the completion of the third DST. The reservoir zones are on trend with the Ronggolawe prospect located northeast of the Tambakboyo structure.  Initial news of the discovery was reported by local media in mid-August 2018. The flow testing campaign was ongoing at the time, to determine reservoir quality and deliverability.  TBKY 2 has been drilled to a total depth of 2,896 m (9,500 feet). The well was likely spudded in late June 2018. Operations were expected to be completed in approximately one month, likely excluding testing. Primary target of the well could be Miocene carbonates of the Kujung Formation. The TBKY 2 well is located approximately 10 km northwest of the Ujung Pangkah B wellhead platform (WHP-B), therefore there is potential for future development of the discovery.  Saka reported in mid-May 2018 that drilling preparations were underway. The drilling campaign is part of the commitment from the company to support governmentâs call to increase exploration activities in the country.    One well was previously drilled in the Tambakboyo structure, Tambakboyo 1 by Premier Oil in October 2000. The well, targeting Kujung I carbonates, was drilled to a TD of approximately 1,670 m and encountered oil and gas shows.   The company was previously planning to drill exploration well Ronggolawe 2, in 2H 2017, however this well could have been deferred or cancelled. Ronggolawe 2 could have been targeting the Upper Eocene carbonates of the Ngimbang Formation.  Saka commenced a new development drilling campaign at the Ujung Pangkah field around October 2017. In addition, the Sidayu field within the block has received Plan of Development (POD) approval in October 2017. In mid-May 2018, Saka reported to have reached FID for the Sidayu development, with first production planned in 2019 from four wells. In addition, the POD for the western area of the Ujung Pangkah field has been reportedly approved, with FID still pending as of early July 2018.  The Pangkah PSC produced approximately 4,000 bo/d and 40 MMcfg/d in February 2018. PT Saka Energi Indonesia operates the block with 100% interest after it bought over 75% operating interest from Hess in January 2014.Â  Prior to the Hess deal, Saka was already a partner in the block via acquisition of 25% partner interest from KUFPEC in June 2013.  Background Information  Gas from the Ujung Pangkah field is delivered to an onshore processing facility in the Gresik area, operated by Sakaâs parent company, PT PLN. The field started producing gas in May 2007 at an initial rate of 20-25 MMscfg/d. LPG production reportedly commenced in late March 2009 with 3,000 b/d and was expected to increase to 10,000 b/d by late 2009. In March 2010, the field produced some 50 MMscfg/d plus 4,000 b/d of LPG. All LPG production from the field is allocated to supply domestic demand.  The 3,500 sq km Pangkah PSC was awarded to Premier on 8 May 1996 upon payment of bonuses totalling USD 450,000 with a work obligation of USD 27.1 million in 10 years and USD 6.3 million in the first three years. The partnership at the time comprised Premier (40%), Amerada Hess (36%) and Seafield Resources (24%). Partial relinquishments have since reduced the block to approximately 780 sq km.  Premier Oil Pangkah Ltd spudded vertical wildcat Tambakboyo 1 on 17 October 2000 using the Sedco-Forex J/U "Trident 17" in 30m of water in its East Java Sea Pangkah PSC as part of a planned multi-well programme. On 29 October 2000 the well was abandoned with oil and gas shows after having been drilled to TD at 1,672m and logged. The well was targeting a Miocene Kujung Formation Unit I reefal build-up with a PTD of 1,673m and is located 18km west north-west of the 1998 Ujung Pangkah 1 oil and gas discovery.  The first well in the Ronggolawe structure, Ronggolawe 1, was drilled by Hess, the previous operator of the block. Ronggolawe 1, situated at a water depth of 50 m, was spudded on or around 6 November 2012 and was drilled to a TD of 2,375 m using the âRowan EXL 1â J/U. The well was plugged and abandoned in early January 2013, without testing. It is understood that oil and gas indications were encountered, with high gas reading in the Kujung Formation. Ronggolawe 1 is located approximately 15 km northeast of the Ujung Pangkah field. Hess had been planning to drill Ronggolawe 2 since 2013, but the plan did not materialize at the time.
Saka Energi has likely completed testing operations at the Tambakboyo 2 (TBKY 2) well in the Pangkah PSC, located in the offshore East Java Basin, as the âHai Yang Shi You 937â J/U rig was demobilized in early October 2018. The well has been earlier reported as an oil and gas discovery. Likely five DSTs were conducted on the well. According to oil and gas regulator SKK Migas, the fourth DST flowed hydrocarbons from the Miocene Kujung Formation in early September 2018. The discovery was announced by operator Saka Energi on 31 August 2018, when the well was reported to have flowed oil and gas from the Tuban, Kujung I and Ngimbang carbonate formations after the completion of the third DST. The reservoir zones are on trend with the Ronggolawe prospect located northeast of the Tambakboyo structure. Initial news of the discovery was reported by local media in mid-August 2018. The flow testing campaign was ongoing at the time, to determine reservoir quality and deliverability. 