Optimization of the design of transverse hydraulic fractures in horizontal wells placed in dual porosity tight gas reservoirs

S. E. Gorucu, T. Ertekin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

The exploitation of gas from tight gas reservoirs has been increasing due to the advances in unconventional gas technologies and depletion of conventional gas resources. Drilling horizontal wells and placing transverse hydraulic fractures are needed to produce economically viable amounts of gas from tight sands. In this research, optimization of the design of hydraulically fractured horizontal well placed in naturally fractured tight gas sand reservoir systems was studied. A commercial reservoir simulator is coupled with artificial neural network (ANN) to create an expert system that can be used to design an efficient stimulation strategy. Reservoir simulation was used to generate production profiles of the reservoir system and, then, used to train the artificial neural network system. The ANN tools developed in this project consists of two parts: forward and inverse processes. In the forward process, an input data set that includes well and completion design parameters and reservoir properties is used to create an ANN toolbox to predict the production profile. In the inverse process, several design parameters and the desired production profiles were introduced into the input data to create an ANN toolbox to estimate the optimum design parameters. It is found that in both expert systems, functional links play a significant role in the success of the ANN tool. The results estimated by this developed toolbox can be used as preliminary information about the expected production profiles or the required wellbore and fracture design parameters for different cases. This study shows that natural fracture permeability is the principal factor that determines the magnitude of the production. In addition, overall conductivities of the natural fractures and the hydraulic fractures are important factors affecting production.

Original languageEnglish (US)
Title of host publicationSociety of Petroleum Engineers - SPE Middle East Unconventional Gas Conference and Exhibition 2011, UGAS
Pages119-133
Number of pages15
StatePublished - 2011
EventSPE Middle East Unconventional Gas Conference and Exhibition 2011, UGAS - Muscat, Oman
Duration: Jan 31 2011Feb 2 2011

Other

OtherSPE Middle East Unconventional Gas Conference and Exhibition 2011, UGAS
CountryOman
CityMuscat
Period1/31/112/2/11

Fingerprint

dual porosity
Horizontal wells
artificial neural network
Porosity
Hydraulics
Neural networks
well
Gases
gas
expert system
Expert systems
Sand
horizontal drilling
sand
train
simulator
gas reservoir
hydraulic fracturing
Tight gas
Drilling

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Geotechnical Engineering and Engineering Geology

Cite this

Gorucu, S. E., & Ertekin, T. (2011). Optimization of the design of transverse hydraulic fractures in horizontal wells placed in dual porosity tight gas reservoirs. In Society of Petroleum Engineers - SPE Middle East Unconventional Gas Conference and Exhibition 2011, UGAS (pp. 119-133)
Gorucu, S. E. ; Ertekin, T. / Optimization of the design of transverse hydraulic fractures in horizontal wells placed in dual porosity tight gas reservoirs. Society of Petroleum Engineers - SPE Middle East Unconventional Gas Conference and Exhibition 2011, UGAS. 2011. pp. 119-133
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Gorucu, SE & Ertekin, T 2011, Optimization of the design of transverse hydraulic fractures in horizontal wells placed in dual porosity tight gas reservoirs. in Society of Petroleum Engineers - SPE Middle East Unconventional Gas Conference and Exhibition 2011, UGAS. pp. 119-133, SPE Middle East Unconventional Gas Conference and Exhibition 2011, UGAS, Muscat, Oman, 1/31/11.

Optimization of the design of transverse hydraulic fractures in horizontal wells placed in dual porosity tight gas reservoirs. / Gorucu, S. E.; Ertekin, T.

Society of Petroleum Engineers - SPE Middle East Unconventional Gas Conference and Exhibition 2011, UGAS. 2011. p. 119-133.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Gorucu SE, Ertekin T. Optimization of the design of transverse hydraulic fractures in horizontal wells placed in dual porosity tight gas reservoirs. In Society of Petroleum Engineers - SPE Middle East Unconventional Gas Conference and Exhibition 2011, UGAS. 2011. p. 119-133