A major breakthrough in the test of gas injection development in the East River in Tarim Oilfield
China oil network news as of December 29, 2017, Donghe oilfield injection test of gas development in third machine production well Donghe 1-H13 wells flowing production, oil pressure, water and other indicators of the recovery of "health", the cumulative production of 10 thousand and 925 tons of crude oil, marking the Donghe oilfield gas injection assisted gravity drive test breakthrough.
Donghe oilfield Donghe 1 Carboniferous reservoir developed in 1990, has been integrated into high water content, high degree of recovery of the double development phase, reservoir energy decreased, reserve production ratio is low, the faster increase of water cut, production decline. At the same time restricted by ultra deep reservoir, high temperature and high pressure, high salt and other harsh geological conditions, the conventional measures to improve the recovery rate is difficult to see the wonders.
"Gas injection" means injecting gas into the well formation, rising to the higher part under the action of gravity, forming "gas cap" on the top of the reservoir, and using "qigong" to push out the "loft oil" which is difficult to drive only by water injection, so as to achieve the purpose of improving oil recovery. Since the implementation of the gas injection assisted gravity drive test in the 1 Carboniferous reservoir of the Donghe River since July 2014, 4 gas wells have been injected.
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