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欢26块构造上位于辽河断陷盆地西部凹陷西斜坡南段。开发目的层为兴隆台油层,油层埋深1700~2020m。上报探明含油面积9.07km2,石油地质储量1697×104t,天然气地质储量3.33×108m3。欢26断块兴隆台油层于1979年5月采用500m正方形井网一套层系投入开发,当年8月按反九点法面积注水方式实现全面注水。1983年进行了中部分层注采、东西部井网加密调整,1991年实施控水稳油,高含水井和对应注水井关井或间开,至1996年含水上升有所缓解,开始通过少量新井挖掘剩余油。1998年区块恢复注水,区块采油速度稳定在0.4%。
Huan 26 structurally located in the Liaohe rift basin western sag western slope of the southern section. Development of the target layer Xinglongtai reservoir, the depth of 1700 ~ 2020m. Reported oil content of 9.07km2, petroleum geological reserves of 1697 × 104t, natural gas geological reserves of 3.33 × 108m3. Huan 26 block Xinglongtai oilfield in May 1979 with 500m square well pattern into a layer of development, in August that year by nine anti-point area of ?? water injection to achieve full injection. In 1983, the middle layer injection and injection were carried out. The well pattern of the eastern and western wells was encrypted and adjusted. In 1991, water diversion and stabilization were carried out. The wells with high water cut and the corresponding water injection wells were closed or opened. By 1996, the water cut slightly eased, New wells to dig the remaining oil. Block recovery in 1998 water injection, block oil production rate stabilized at 0.4%.