Petroleum Science >2015,??Issue 3:??553-559 DOI: https://doi.org/10.1007/s12182-015-0036-7
On the feasibility of re-stimulation of shale wells Open?Access
文章信息
作者：Mohammad O. Eshkalak,Umut Aybar and Kamy Sepehrnoori
作者单位：
The University of Texas at Austin – PGE, 200 E Dean Keeton, Austin, TX 78712, USA;The University of Texas at Austin – PGE, 200 E Dean Keeton, Austin, TX 78712, USA;The University of Texas at Austin – PGE, 200 E Dean Keeton, Austin, TX 78712, USA
投稿时间：2015-07-08
引用方式：Eshkalak, M.O., Aybar, U. & Sepehrnoori, K. Pet. Sci. (2015) 12: 553. https://doi.org/10.1007/s12182-015-0036-7
文章摘要
As a result of advances in horizontal completions
and multi-stage hydraulic fracturing, the U.S. has
been able to economically develop several decades of
worth of natural gas. However, a considerable concern has
risen on the economic viability of shale gas development
for reasons associated with the fast production declines as
well as recent down-turns of natural gas prices besides rises
in the costs of new technologies. Therefore, an economic
analysis is required to investigate the profitability of the refracturing
treatment of unconventional gas resources. Net
present value of cash flows and internal rate of return are
calculated for a range of gas prices considering 20 years of
natural gas production from a typical unconventional shale
gas reservoir. A systematic comparison is then accomplished
for three scenarios: (1) re-fracturing versus no refracturing,
(2) combination of re-fracturing and drilling
new wells, and (3) time-dependent re-fracturing treatment.
Further, this paper incorporates the cost of re-fracturing
treatment, the cost of drilling a new horizontal well, the
water treatment cost, as well as the current and future price
of natural gas in the model. The findings of this work
would help the future re-stimulation development plans of
the emerging unconventional shale gas plays.
and multi-stage hydraulic fracturing, the U.S. has
been able to economically develop several decades of
worth of natural gas. However, a considerable concern has
risen on the economic viability of shale gas development
for reasons associated with the fast production declines as
well as recent down-turns of natural gas prices besides rises
in the costs of new technologies. Therefore, an economic
analysis is required to investigate the profitability of the refracturing
treatment of unconventional gas resources. Net
present value of cash flows and internal rate of return are
calculated for a range of gas prices considering 20 years of
natural gas production from a typical unconventional shale
gas reservoir. A systematic comparison is then accomplished
for three scenarios: (1) re-fracturing versus no refracturing,
(2) combination of re-fracturing and drilling
new wells, and (3) time-dependent re-fracturing treatment.
Further, this paper incorporates the cost of re-fracturing
treatment, the cost of drilling a new horizontal well, the
water treatment cost, as well as the current and future price
of natural gas in the model. The findings of this work
would help the future re-stimulation development plans of
the emerging unconventional shale gas plays.
关键词
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Economic analysis Unconventional shaleassets Hydraulic re-fracturing Net present value Internal rate of return