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- W2040689459 abstract "Abstract Many small independent operators are currently using a cookbook style of production operation and performance evaluation. The result reduces the opportunity of producing at the well's top performance which will curtail the current revenues. A promising innovative Nodal analysis technique is being applied to two Appalachian gas wells using a microcomputer. The objective of this paper is to present the optimization studies and their effects on production operations. Wade #2 well was drilled and completed in 1985 in Harrison County, West Virginia. The well was hydraulically fractured in 3 zones, Benson, Balltown, and Speechley and the stimulation seems to be working well. A 2-3/8 inch tubing string was run to a depth of 4774 feet. The well was loading with fluid and producing at a diminishing rate. It is suspected that oil is being produced in the upper zone which causes damage in the lower zones (gas zones). If the oil is isolated from the other zones, the gas will not have enough pressure to produce by itself. The Nodal analysis suggests that the well's production will be improved if an intermittent gas lift rabbit is installed for the production stream. The well will then be producing efficiently in different zones. Pratt #1 well was drilled and completed in late 1985 in Lewis County, West Virginia. The well was stimulated in two zones, Balltown and Speechley, with hydraulic fracturing. Since the engineer believed the well could be a better well from the logging data, a deep penetration stimulation was conducted on this well. Unfortunately, the well started producing water, and the oil and gas rates dropped because the fracture had gone into the water zone in the neighboring area. If a casing log is run in order to find out the exact location of the water zone, the well needs to be cement squeezed, reperforated and re-stimulated in the new zone. However, this method would be very costly. The Nodal analysis was applied for this well. Clean-up and stimulation will be necessary to remove the wax and formation damage. Again, an intermittent gas lift is recommended to replace the sucker-rod pump. With all these recommended changes, the well will be producing at its optimized rate. In addition, both wells' new designs will have an economic advantage over the old design without excessive extra cost." @default.
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- W2040689459 date "1987-10-21" @default.
- W2040689459 modified "2023-09-27" @default.
- W2040689459 title "Application of Nodal Analysis in Appalachian Gas Wells" @default.
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- W2040689459 doi "https://doi.org/10.2118/17061-ms" @default.
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