Single Well Productivity Prediction Model for Fracture-Vuggy Reservoir Based on Selected Seismic Attributes
Single well productivity is an important index of oilfield production planning and economic evaluation. Due to fracture-vuggy reservoirs being characteristically strongly heterogeneous and having complex fluid distribution, the commonly used single well productivity prediction methods for fracture-v...
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doaj-6597d8218876453aa820d55b246e0b7b2021-07-23T13:38:40ZengMDPI AGEnergies1996-10732021-07-01144134413410.3390/en14144134Single Well Productivity Prediction Model for Fracture-Vuggy Reservoir Based on Selected Seismic AttributesShuozhen Wang0Shuoliang Wang1Chunlei Yu2Haifeng Liu3College of Energy Resources, China University of Geosciences, Beijing 100083, ChinaCollege of Energy Resources, China University of Geosciences, Beijing 100083, ChinaShengli Oil Field Exploration and Development Research Institute, Dongying 257001, ChinaResearch Institute of Exploration and Development, PetroChina Changqing Oilfield Company, Xi’an 710018, ChinaSingle well productivity is an important index of oilfield production planning and economic evaluation. Due to fracture-vuggy reservoirs being characteristically strongly heterogeneous and having complex fluid distribution, the commonly used single well productivity prediction methods for fracture-vuggy reservoirs have many problems, such as difficulty in obtaining reservoir parameters and producing large errors in the forecast values of single well productivity. In this paper, based on the triple medium model, the Laplace transform and Duhamel principle are used to obtain the productivity equation of a single well in a fracture-vuggy reservoir. Secondly, the seismic attributes affecting the productivity of a single well are selected using the Spearman and Pearson correlation index calculation method. Finally, the selected seismic attributes are introduced into the productivity equation of the triple medium model through the interporosity flow coefficient and the elastic storativity ratio, and the undetermined coefficients under different karst backgrounds are determined using multiple nonlinear regression. From these, a new method for predicting single well productivity of fracture-vuggy reservoir is established. In order to verify the feasibility of the new method, based on the actual production data of a fracture-vuggy reservoir in Xinjiang, the new single well productivity prediction method is used to predict the productivity of 134 oil wells. The results show that the new productivity prediction method not only reduces calculation workload, but also improves the accuracy of productivity prediction, which contributes to a good foundation for future oilfield development.https://www.mdpi.com/1996-1073/14/14/4134single well productivity predictionfracture–vuggy reservoirtriple medium modelthree-dimensional seismic attributemultivariate nonlinear regression |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shuozhen Wang Shuoliang Wang Chunlei Yu Haifeng Liu |
spellingShingle |
Shuozhen Wang Shuoliang Wang Chunlei Yu Haifeng Liu Single Well Productivity Prediction Model for Fracture-Vuggy Reservoir Based on Selected Seismic Attributes Energies single well productivity prediction fracture–vuggy reservoir triple medium model three-dimensional seismic attribute multivariate nonlinear regression |
author_facet |
Shuozhen Wang Shuoliang Wang Chunlei Yu Haifeng Liu |
author_sort |
Shuozhen Wang |
title |
Single Well Productivity Prediction Model for Fracture-Vuggy Reservoir Based on Selected Seismic Attributes |
title_short |
Single Well Productivity Prediction Model for Fracture-Vuggy Reservoir Based on Selected Seismic Attributes |
title_full |
Single Well Productivity Prediction Model for Fracture-Vuggy Reservoir Based on Selected Seismic Attributes |
title_fullStr |
Single Well Productivity Prediction Model for Fracture-Vuggy Reservoir Based on Selected Seismic Attributes |
title_full_unstemmed |
Single Well Productivity Prediction Model for Fracture-Vuggy Reservoir Based on Selected Seismic Attributes |
title_sort |
single well productivity prediction model for fracture-vuggy reservoir based on selected seismic attributes |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2021-07-01 |
description |
Single well productivity is an important index of oilfield production planning and economic evaluation. Due to fracture-vuggy reservoirs being characteristically strongly heterogeneous and having complex fluid distribution, the commonly used single well productivity prediction methods for fracture-vuggy reservoirs have many problems, such as difficulty in obtaining reservoir parameters and producing large errors in the forecast values of single well productivity. In this paper, based on the triple medium model, the Laplace transform and Duhamel principle are used to obtain the productivity equation of a single well in a fracture-vuggy reservoir. Secondly, the seismic attributes affecting the productivity of a single well are selected using the Spearman and Pearson correlation index calculation method. Finally, the selected seismic attributes are introduced into the productivity equation of the triple medium model through the interporosity flow coefficient and the elastic storativity ratio, and the undetermined coefficients under different karst backgrounds are determined using multiple nonlinear regression. From these, a new method for predicting single well productivity of fracture-vuggy reservoir is established. In order to verify the feasibility of the new method, based on the actual production data of a fracture-vuggy reservoir in Xinjiang, the new single well productivity prediction method is used to predict the productivity of 134 oil wells. The results show that the new productivity prediction method not only reduces calculation workload, but also improves the accuracy of productivity prediction, which contributes to a good foundation for future oilfield development. |
topic |
single well productivity prediction fracture–vuggy reservoir triple medium model three-dimensional seismic attribute multivariate nonlinear regression |
url |
https://www.mdpi.com/1996-1073/14/14/4134 |
work_keys_str_mv |
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