Optimized design of cyclic pressure pulsing in a depleted, naturally fractured reservoir

E. Artun, T. Ertekin, R. Watson, B. Miller

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

14 Citations (Scopus)

Abstract

Gas cyclic pressure pulsing is an effective IOR method specifically for naturally fractured reservoirs. Due to the computational cost of simulating a large number of scenarios, it is an arduous task to determine the optimum operational conditions for the process. In this study, a practical screening and optimization workflow is utilized to determine the most optimum operating conditions for cyclic pressure pulsing applications with N 2 and CO 2 in a fully-depleted reservoir. Two huff'n' puff design schemes with variable and constant injection volumes are implemented in a compositional, dual-porosity reservoir simulation model. A set of representative design scenarios is created and run using this model. Then, the collected performance indicators are fed into the neural network for training and two neural network-based proxies are developed: 1) A forward proxy to predict the corresponding performance indicators once given the design scenarios, 2) An inverse proxy to predict the corresponding design scenarios once given a set of desired performance characteristics. Finally, the genetic algorithm is used to search for the best design scenario that would maximize the efficiency of the process for a given time of operation. To evaluate the objective function, the forward proxy is used for computational efficiency. The methodology is tested with a single-well reservoir model of the Big Andy Field which is a depleted, naturally fractured reservoir in Eastern Kentucky with stripper-well production. Predictive capability and accuracy of developed networks are checked by comparing simulation outputs with network outputs. It is observed that networks are able to accurately predict the performance indicators including the peak rate, time to reach the peak rate, cycle flow rates, incremental oil production, and gas-oil-ratio. The proposed methodology is practical and computationally efficient in structuring more effective decisions towards the optimum design of the process.

Original languageEnglish (US)
Title of host publicationSociety of Petroleum Engineers - SPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008
Pages396-416
Number of pages21
StatePublished - Dec 1 2008
EventSPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008 - Pittsburgh, PA, United States
Duration: Oct 11 2008Oct 15 2008

Publication series

NameSociety of Petroleum Engineers - SPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008

Other

OtherSPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008
CountryUnited States
CityPittsburgh, PA
Period10/11/0810/15/08

Fingerprint

Neural networks
Carbon Monoxide
Gas oils
dual porosity
Computational efficiency
methodology
Screening
Oils
gas
genetic algorithm
oil production
Porosity
Genetic algorithms
Gases
simulation
Flow rate
well
oil
Costs
cost

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Geotechnical Engineering and Engineering Geology

Cite this

Artun, E., Ertekin, T., Watson, R., & Miller, B. (2008). Optimized design of cyclic pressure pulsing in a depleted, naturally fractured reservoir. In Society of Petroleum Engineers - SPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008 (pp. 396-416). (Society of Petroleum Engineers - SPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008).
Artun, E. ; Ertekin, T. ; Watson, R. ; Miller, B. / Optimized design of cyclic pressure pulsing in a depleted, naturally fractured reservoir. Society of Petroleum Engineers - SPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008. 2008. pp. 396-416 (Society of Petroleum Engineers - SPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008).
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Artun, E, Ertekin, T, Watson, R & Miller, B 2008, Optimized design of cyclic pressure pulsing in a depleted, naturally fractured reservoir. in Society of Petroleum Engineers - SPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008. Society of Petroleum Engineers - SPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008, pp. 396-416, SPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008, Pittsburgh, PA, United States, 10/11/08.

Optimized design of cyclic pressure pulsing in a depleted, naturally fractured reservoir. / Artun, E.; Ertekin, T.; Watson, R.; Miller, B.

Society of Petroleum Engineers - SPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008. 2008. p. 396-416 (Society of Petroleum Engineers - SPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008).

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

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Artun E, Ertekin T, Watson R, Miller B. Optimized design of cyclic pressure pulsing in a depleted, naturally fractured reservoir. In Society of Petroleum Engineers - SPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008. 2008. p. 396-416. (Society of Petroleum Engineers - SPE Eastern Regional/AAPG Eastern Section Joint Meeting 2008).