Steady Productivity of Horizontal Well in Hydraulic Fracture Induced Shale Gas Reservoir

XIE  Wei-Yang, LI  Xiao-Ping

doi:10.11764/j.issn.1672-1926.2012.02.387

Natural Gas Geoscience >

2012 , Vol. 23 >Issue 2: 387 - 392

DOI: https://doi.org/10.11764/j.issn.1672-1926.2012.02.387

Steady Productivity of Horizontal Well in Hydraulic Fracture Induced Shale Gas Reservoir

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The State Key Lab of Oil/Gas Reservoir Geology and Exploitation, Southwest Petroleum University,Chengdu 610500,China

Received date: 2011-09-28

Revised date: 2012-01-15

Online published: 2012-04-10

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Abstract

Although the shale gas resource is plentiful and has good production prospect,the development of shale gas reservoir with the low permeability and low porosity is more difficult than that of normal gas reservoir.The development method of shale gas reservoir in oversea is horizontal well and hydrofracture.Based on hydraulic fractures in the horizontal well hydrofracture for shale gas reservoir,we establish the late stable production filtration model of the horizontal well in the hydraulic fracturing induced shale gas reservoir.We use the equivalent filtration resistance to deduce the late stable production equation of the horizontal well after considering adsorption and desorption.Then,we use the pseudopressure method to adjust the equation for oil phase to fit the gaseous phase.The results show that the horizontal well production increases with hydraulic fractures increase and hydraulic fractures space decrease.The increase speed of the horizontal well steady productivity becomes low while the horizontal well length increases over a certain value which is controlled by basic data of shale gas reservoir itself.

Key words： Shale gas reservoir; Horizontal well production; Hydrofracture; Exhaust region; Stable production filtration model; Production equation; Hydraulic fracturing effect.

Cite this article

XIE Wei-Yang, LI Xiao-Ping . Steady Productivity of Horizontal Well in Hydraulic Fracture Induced Shale Gas Reservoir[J]. Natural Gas Geoscience, 2012 , 23(2) : 387 -392 . DOI: 10.11764/j.issn.1672-1926.2012.02.387

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