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马拉松石油公司通过对一口地处墨西哥湾的气井实施水淹气层的聚合物封堵处理, 使得位于原开采气层下方的未打开气层得以投产。据马拉松石油公司的专家估算, 这种无需动用修井机而采用连续油管实施的施工作业, 费用大约为动用修井机实施二次完井作业费用的 35%左右。完成作业后采用12/64in油嘴试气, 新打开气层的初始产量为天然气 1 7MMscf/d和凝析油 38bbl/d, 生产液流中未见砂子和水产出。在生产油嘴尺寸增加到14/64in之后, 该气井在一年内持续以天然气 2 3MMscf/d和凝析油16bbl/d的产量稳定生产, 产液中未见砂子和水。
The Marathon Oil Company sealed off a gas-flooded polymer reservoir in a gas well in the Gulf of Mexico, putting the unopened gas reservoir below the original gas-producing zone into operation. According to experts at Marathon Oil Company, this kind of construction work using coiled tubing without using an workover rig costs about 35% of the cost of moving the workover rig to secondary completion. After the completion of the operation, the 12 / 64in nozzle is used for gas test. The newly opened gas layer has an initial output of 17 MMscf / d of natural gas and 38 bbl / d of condensate. No sand and water are produced in the production flow. After the size of the production nozzle increased to 14 / 64in, the gas well continued to be produced steadily with a yield of 2 3MMscf / d of natural gas and 16bbl / d of condensate during one year. No sand and water were found in the production fluid.