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发明公开
CN102943654A 利用高含CO2气藏提高高含烃气藏采收率的方法 无效 - 驳回

利用高含CO2气藏提高高含烃气藏采收率的方法
摘要：
本发明公开了一种利用高含CO2气藏提高高含烃气藏采收率的方法，该方法通过在高含CO2气藏和已开发的高含烃气藏之间建立人造天然气运移通道，并充分利用高含CO2气藏地层能量，将高含CO2气藏中的天然气运移至已开发的高含烃气藏，实现“CO2气驱”，可提高已开发的高含烃气藏天然气采收率。本发明对已有的生产平台或水下生产系统进行充分利用从而缩短开发周期，降低了投资成本。并且还降低了脱CO2成本；将高含CO2天然气通过人造运移通道运移至已开发的高含烃气藏，可不受生产平台空间或水下井口数量限制；采用该方法实现“CO2气驱”，可以充分利用高含CO2气藏地层能量，提高已开发的高含烃气藏地层压力，提高其天然气采收率。
摘要（英）：

The invention discloses a method for improving the recovery efficiency of a high-hydrocarbon-content gas deposit by a high-CO2-content gas deposit, natural gas in the high-CO2-content gas deposit is transported to a developed high-hydrocarbon-content gas deposit by building an artificial natural gas transportation channel between the high-CO2-content gas deposit and the developed high-hydrocarbon-content gas deposit and fully utilizing the stratum energy of the high-CO2-content gas deposit, so as to implement 'CO2 gas drive' to improve the recovery efficiency of natural gas of the developed high-hydrocarbon-content gas deposit. According to the method, an existing production platform or underwater production system is fully utilized to shorten the development period and reduce the investment cost. In addition, the CO2 removal cost is further lowered, the high-CO2-content natural gas is transported to the developed high-hydrocarbon-content gas deposit through the artificial transportation channel without being limited by the number of the production platforms or underwater wellheads; when the method is adopted to implement 'CO2 gas drive', the stratum energy of the high-CO2-content gas deposit is fully used for improving the stratum pressure of the high- hydrocarbon-content gas deposit and the recovery efficiency of the natural gas of the high- hydrocarbon-content gas deposit.

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