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- W2389788986 abstract "The major producing formation of Dayi condensate gas reservoir is Da'anzhai Member of Lower Jurassic Ziliujing Formation. It is an elastic-driven fractured condensate gas reservoir. During the later stage of development, the formation pressure becomes lower and lower, and the capacity of condensate oil carried by gas gets weaker and weaker. Some of wells can not be put into production because of serious accumulation in wellbore which brings large wellhead pressure drop for wellhead. Through the analysis of the shutdown wells in this reservoir, this paper describes two key points of production recovery for those wells: (1) the pressure gradient of wellhead fluid column should be reduced; (2) enough bottom-hole power. According to the analysis, a shut-in has been implemented primarily to recover the formation pressure. Then, casing pressure gas with higher pressure is put immediately into tubing. The gas decreases the accumulation height and makes big disturbance in wellbore to mix natural gas and condensate oil intensively until foamy. The foam-produced flow can reduce the pressure gradient so that the accumulation can be discharged. Therefore, the treatment has been applied efficiently to the shutdown wells to recover production." @default.
- W2389788986 created "2016-06-24" @default.
- W2389788986 creator A5028847893 @default.
- W2389788986 date "2009-01-01" @default.
- W2389788986 modified "2023-09-25" @default.
- W2389788986 title "PRODUCTION RECOVERY TECHNOLOGY FOR CONDENSATE GAS SHUTDOWN WELLS DUE TO ACCUMULATION, DAYI GAS RESERVOIR OF SHILONGCHANG IN NORTH SICHUAN BASIN" @default.
- W2389788986 hasPublicationYear "2009" @default.
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