As reported by local industry sources, Rosneft has started testing operations in the Tsentralno-Olginskaya 1 exploratory well in the Khatangskiy block. The well was drilled to a TD of 4,100 m in 2017, but testing was postponed then.  In October 2017, Rosneft submitted a reserve report for the Tsentralno-Olginskoye oil discovery to the State Commission for Reserves (GKZ) for official registration. According to the GKZ, 3P reserves of the discovery were estimated at 591 MMbbl of oil. No details regarding stratigraphy, depth or tests were provided at the time. It should be noted that Tsentralno-Olginskoye is the first state-registered discovery in the Lena-Anabar Basin meaning the new petroleum province inauguration.  Background Information  Russian Government awarded the Khatangskiy block to Rosneft on 17 December 2015. Rosneft had paid a signature bonus of RUB 282.512 million (USD 4 million). The block covers 17,218 sq km in the Khatanga Bay and the Laptev Sea. Its pre-drill hydrocarbon resources were estimated at 604 MMbbl of oil, 7.8 Tcf of gas and 109 MMbbl of condensate, but, after analysing new data, Rosneft reduced its estimations to 428 MMbbl of liquids and 4 Tcf of gas. Commitments during a 10-year exploratory stage include acquisition of 1,000 km of seismic data and drilling of an exploratory well.  On 3 April 2017, Rosneft spudded the first exploratory well in the block. Highly-deviated Tsentralno-Olginskaya 1 with a PTD of 4,147 m (TVD of 3,125 m) was spudded from the Khara-Tumus peninsula and its bottom hole is located some 2,500 m west in the Khatanga Bay. Permian clastic reservoirs are the wellâs main exploratory target.
Russia (Lena-Anabar B.) Tsentralno-Olginskoye