Numerical Simulation Study on Influence of Multi-seam Propagation of Hydraulic Fracture in Coal Seam

Zhang Weiqiang; Pu Chunsheng

doi:doi:10.11648/j.sd.20200805.16

| Peer-Reviewed

Numerical Simulation Study on Influence of Multi-seam Propagation of Hydraulic Fracture in Coal Seam

Zhang Weiqiang, Pu Chunsheng

Published in Science Discovery (Volume 8, Issue 5)

Received: 12 September 2020 Published: 17 October 2020

Views: Downloads:

Download PDF

Share This Article

Twitter
Linked In
Facebook

Abstract

Multi-stage fracturing technology for horizontal Wells is one of the effective methods of coal seam volume reconstruction at present. This technology can effectively form a volumetric seam network, increase the volume of coal seam segment reconstruction, increase the area of gas seepage channel, and reduce the generation of coal powder. In order to study the mutual interference of multi-fracture extension in hydraulic fracturing of coal seam and to solve the problem of unclear effect of fracturing construction parameters in coal seam at present, this paper, based on the extended finite element method (XFEM), conducts fluid-solid coupling simulation using pore pressure element (C3D8P), and establishes a calculation model of multi-fracture extension in coal seam. This model is used to study the influence of perforating cluster number, cluster spacing and non-uniformity on hydraulic fracture propagation. The calculated results indicate that, with the increase of the number of perforating clusters, the surface stress field is disturbed more seriously by fractures, and the volume of formation reconstruction also increases correspondingly. After comprehensive comparison, it is believed that the optimal fracturing effect can be achieved when two clusters of perforating clusters are used. The larger the cluster spacing, the smaller the inter-fracture interference, and the higher the formation pore pressure during fracturing. The non-uniformity between clusters has a great influence on fracture propagation. When the displacement of the middle cluster is 1/4, the inhibition effect is severe and it is difficult to form effective fracturing fracture. Finally, the model is used to optimize the multi-stage fracturing construction parameters of horizontal well in coal seam, which provides reference and guidance for the design of hydraulic fracturing scheme.

Published in	Science Discovery (Volume 8, Issue 5)
DOI	10.11648/j.sd.20200805.16
Page(s)	107-112
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2020. Published by Science Publishing Group

Keywords

Horizontal Well, Coal Seam, Hydrofracture, XFEM

References

[1]	王益山,王合林,刘大伟,袁孟雷,蒋海涛.中国煤层气钻井技术现状及发展趋势[J].天然气工业,2014,34(08):87-91.
[2]	Roussel NP, Sharna MM. Strategies to minimize fray spacing and stimulate natural fractures in horizontal completions [C]// SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2011.
[3]	Guo J, Lu Q, Zhu H, Wang Y, Ma L. Perforating cluster space optimization method of horizontal well mufti-stage fracturing in extremely thick unconventional gas reservoir [J].Journal of Natural Gas Seience and Engineering. 2015, 26:1648-1662.
[4]	李军,赵文光,李娜,洪国良.煤层形成背景与煤层气储层特征[J].非常规油气,2015,2(02):27-33.
[5]	刘志强. 低渗透油气藏水力压裂数值模拟研究[D].中国科学技术大学,2016.
[6]	魏波,陈军斌,谢青,张杰,王汉青,赵逸然.基于扩展有限元的页岩水平井压裂裂缝扩展模拟[J].西安石油大学学报(自然科学版),2016,31(02):70-75+81.
[7]	周圣昊.煤层气多级压降排采工艺[J].非常规油气,2019,(06):63-67.
[8]	郭天魁,张士诚,刘卫来,赖文旭.页岩储层射孔水平井分段压裂的起裂压力[J].天然气工业,2013,33(12):87-93.
[9]	张广明,刘合,张劲,吴恒安,王秀喜.水平井水力压裂的三维有限元数值模拟研究[J].工程力学,2011,28(02):101-106.
[10]	张广明. 水平井水力压裂数值模拟研究[D].中国科学技术大学,2010.
[11]	潘林华,张士诚,程礼军,陆朝晖,柳凯誉.水平井“多段分簇”压裂簇间干扰的数值模拟[J].天然气工业,2014,34(01):74-79.
[12]	艾军,肖传桃,郭双,陈肯.我国煤层气储层特征研究[J].非常规油气,2014,1(01):33-40.
[13]	张广清,陈勉.水平井水力裂缝非平面扩展研究[J].石油学报,2005(03):95-97+101.
[14]	邓燕. 大位移井水力压裂裂缝起裂机理研究及应用[D].西南石油学院,2003.
[15]	刘京. 基于扩展有限元的页岩水平井压裂裂缝扩展规律研究[D].西安石油大学,2019.
[16]	冯依娜. 油气藏体积压裂缝网形成的力学研究及优化[D].东北石油大学,2018.
[17]	李扬,邓金根,蔚宝华,刘伟,陈建国.储/隔层岩石及层间界面性质对压裂缝高的影响[J].石油钻探技术,2014,42(06):80-86.
[18]	李杨. 全三维水力裂缝在砂/泥岩界面上扩展特性研究[D].东北石油大学, 2014.
[19]	熊文学,袁旭,惠涛,王圣涛,刘挺,申超.煤层气直井压裂参数优化设计[J].非常规油气,2016,3(04):95-103.

Cite This Article

Plain Text BibTeX RIS

APA Style

Zhang Weiqiang, Pu Chunsheng. (2020). Numerical Simulation Study on Influence of Multi-seam Propagation of Hydraulic Fracture in Coal Seam. Science Discovery, 8(5), 107-112. https://doi.org/10.11648/j.sd.20200805.16

Copy | Download

ACS Style

Zhang Weiqiang; Pu Chunsheng. Numerical Simulation Study on Influence of Multi-seam Propagation of Hydraulic Fracture in Coal Seam. Sci. Discov. 2020, 8(5), 107-112. doi: 10.11648/j.sd.20200805.16

Copy | Download

AMA Style

Zhang Weiqiang, Pu Chunsheng. Numerical Simulation Study on Influence of Multi-seam Propagation of Hydraulic Fracture in Coal Seam. Sci Discov. 2020;8(5):107-112. doi: 10.11648/j.sd.20200805.16

Copy | Download

@article{10.11648/j.sd.20200805.16,
  author = {Zhang Weiqiang and Pu Chunsheng},
  title = {Numerical Simulation Study on Influence of Multi-seam Propagation of Hydraulic Fracture in Coal Seam},
  journal = {Science Discovery},
  volume = {8},
  number = {5},
  pages = {107-112},
  doi = {10.11648/j.sd.20200805.16},
  url = {https://doi.org/10.11648/j.sd.20200805.16},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20200805.16},
  abstract = {Multi-stage fracturing technology for horizontal Wells is one of the effective methods of coal seam volume reconstruction at present. This technology can effectively form a volumetric seam network, increase the volume of coal seam segment reconstruction, increase the area of gas seepage channel, and reduce the generation of coal powder. In order to study the mutual interference of multi-fracture extension in hydraulic fracturing of coal seam and to solve the problem of unclear effect of fracturing construction parameters in coal seam at present, this paper, based on the extended finite element method (XFEM), conducts fluid-solid coupling simulation using pore pressure element (C3D8P), and establishes a calculation model of multi-fracture extension in coal seam. This model is used to study the influence of perforating cluster number, cluster spacing and non-uniformity on hydraulic fracture propagation. The calculated results indicate that, with the increase of the number of perforating clusters, the surface stress field is disturbed more seriously by fractures, and the volume of formation reconstruction also increases correspondingly. After comprehensive comparison, it is believed that the optimal fracturing effect can be achieved when two clusters of perforating clusters are used. The larger the cluster spacing, the smaller the inter-fracture interference, and the higher the formation pore pressure during fracturing. The non-uniformity between clusters has a great influence on fracture propagation. When the displacement of the middle cluster is 1/4, the inhibition effect is severe and it is difficult to form effective fracturing fracture. Finally, the model is used to optimize the multi-stage fracturing construction parameters of horizontal well in coal seam, which provides reference and guidance for the design of hydraulic fracturing scheme.},
 year = {2020}
}

Copy | Download

TY  - JOUR
T1  - Numerical Simulation Study on Influence of Multi-seam Propagation of Hydraulic Fracture in Coal Seam
AU  - Zhang Weiqiang
AU  - Pu Chunsheng
Y1  - 2020/10/17
PY  - 2020
N1  - https://doi.org/10.11648/j.sd.20200805.16
DO  - 10.11648/j.sd.20200805.16
T2  - Science Discovery
JF  - Science Discovery
JO  - Science Discovery
SP  - 107
EP  - 112
PB  - Science Publishing Group
SN  - 2331-0650
UR  - https://doi.org/10.11648/j.sd.20200805.16
AB  - Multi-stage fracturing technology for horizontal Wells is one of the effective methods of coal seam volume reconstruction at present. This technology can effectively form a volumetric seam network, increase the volume of coal seam segment reconstruction, increase the area of gas seepage channel, and reduce the generation of coal powder. In order to study the mutual interference of multi-fracture extension in hydraulic fracturing of coal seam and to solve the problem of unclear effect of fracturing construction parameters in coal seam at present, this paper, based on the extended finite element method (XFEM), conducts fluid-solid coupling simulation using pore pressure element (C3D8P), and establishes a calculation model of multi-fracture extension in coal seam. This model is used to study the influence of perforating cluster number, cluster spacing and non-uniformity on hydraulic fracture propagation. The calculated results indicate that, with the increase of the number of perforating clusters, the surface stress field is disturbed more seriously by fractures, and the volume of formation reconstruction also increases correspondingly. After comprehensive comparison, it is believed that the optimal fracturing effect can be achieved when two clusters of perforating clusters are used. The larger the cluster spacing, the smaller the inter-fracture interference, and the higher the formation pore pressure during fracturing. The non-uniformity between clusters has a great influence on fracture propagation. When the displacement of the middle cluster is 1/4, the inhibition effect is severe and it is difficult to form effective fracturing fracture. Finally, the model is used to optimize the multi-stage fracturing construction parameters of horizontal well in coal seam, which provides reference and guidance for the design of hydraulic fracturing scheme.
VL  - 8
IS  - 5
ER  -

Copy | Download

Author Information

Zhang Weiqiang

School of Petroleum Engineering, China University of Petroleum, Qingdao, China
Pu Chunsheng

School of Petroleum Engineering, China University of Petroleum, Qingdao, China

Download PDF

Sections

Plain Text BibTeX RIS

APA Style

Zhang Weiqiang, Pu Chunsheng. (2020). Numerical Simulation Study on Influence of Multi-seam Propagation of Hydraulic Fracture in Coal Seam. Science Discovery, 8(5), 107-112. https://doi.org/10.11648/j.sd.20200805.16

Copy | Download

ACS Style

Zhang Weiqiang; Pu Chunsheng. Numerical Simulation Study on Influence of Multi-seam Propagation of Hydraulic Fracture in Coal Seam. Sci. Discov. 2020, 8(5), 107-112. doi: 10.11648/j.sd.20200805.16

Copy | Download

AMA Style

Zhang Weiqiang, Pu Chunsheng. Numerical Simulation Study on Influence of Multi-seam Propagation of Hydraulic Fracture in Coal Seam. Sci Discov. 2020;8(5):107-112. doi: 10.11648/j.sd.20200805.16

Copy | Download

@article{10.11648/j.sd.20200805.16,
  author = {Zhang Weiqiang and Pu Chunsheng},
  title = {Numerical Simulation Study on Influence of Multi-seam Propagation of Hydraulic Fracture in Coal Seam},
  journal = {Science Discovery},
  volume = {8},
  number = {5},
  pages = {107-112},
  doi = {10.11648/j.sd.20200805.16},
  url = {https://doi.org/10.11648/j.sd.20200805.16},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20200805.16},
  abstract = {Multi-stage fracturing technology for horizontal Wells is one of the effective methods of coal seam volume reconstruction at present. This technology can effectively form a volumetric seam network, increase the volume of coal seam segment reconstruction, increase the area of gas seepage channel, and reduce the generation of coal powder. In order to study the mutual interference of multi-fracture extension in hydraulic fracturing of coal seam and to solve the problem of unclear effect of fracturing construction parameters in coal seam at present, this paper, based on the extended finite element method (XFEM), conducts fluid-solid coupling simulation using pore pressure element (C3D8P), and establishes a calculation model of multi-fracture extension in coal seam. This model is used to study the influence of perforating cluster number, cluster spacing and non-uniformity on hydraulic fracture propagation. The calculated results indicate that, with the increase of the number of perforating clusters, the surface stress field is disturbed more seriously by fractures, and the volume of formation reconstruction also increases correspondingly. After comprehensive comparison, it is believed that the optimal fracturing effect can be achieved when two clusters of perforating clusters are used. The larger the cluster spacing, the smaller the inter-fracture interference, and the higher the formation pore pressure during fracturing. The non-uniformity between clusters has a great influence on fracture propagation. When the displacement of the middle cluster is 1/4, the inhibition effect is severe and it is difficult to form effective fracturing fracture. Finally, the model is used to optimize the multi-stage fracturing construction parameters of horizontal well in coal seam, which provides reference and guidance for the design of hydraulic fracturing scheme.},
 year = {2020}
}

Copy | Download

TY  - JOUR
T1  - Numerical Simulation Study on Influence of Multi-seam Propagation of Hydraulic Fracture in Coal Seam
AU  - Zhang Weiqiang
AU  - Pu Chunsheng
Y1  - 2020/10/17
PY  - 2020
N1  - https://doi.org/10.11648/j.sd.20200805.16
DO  - 10.11648/j.sd.20200805.16
T2  - Science Discovery
JF  - Science Discovery
JO  - Science Discovery
SP  - 107
EP  - 112
PB  - Science Publishing Group
SN  - 2331-0650
UR  - https://doi.org/10.11648/j.sd.20200805.16
AB  - Multi-stage fracturing technology for horizontal Wells is one of the effective methods of coal seam volume reconstruction at present. This technology can effectively form a volumetric seam network, increase the volume of coal seam segment reconstruction, increase the area of gas seepage channel, and reduce the generation of coal powder. In order to study the mutual interference of multi-fracture extension in hydraulic fracturing of coal seam and to solve the problem of unclear effect of fracturing construction parameters in coal seam at present, this paper, based on the extended finite element method (XFEM), conducts fluid-solid coupling simulation using pore pressure element (C3D8P), and establishes a calculation model of multi-fracture extension in coal seam. This model is used to study the influence of perforating cluster number, cluster spacing and non-uniformity on hydraulic fracture propagation. The calculated results indicate that, with the increase of the number of perforating clusters, the surface stress field is disturbed more seriously by fractures, and the volume of formation reconstruction also increases correspondingly. After comprehensive comparison, it is believed that the optimal fracturing effect can be achieved when two clusters of perforating clusters are used. The larger the cluster spacing, the smaller the inter-fracture interference, and the higher the formation pore pressure during fracturing. The non-uniformity between clusters has a great influence on fracture propagation. When the displacement of the middle cluster is 1/4, the inhibition effect is severe and it is difficult to form effective fracturing fracture. Finally, the model is used to optimize the multi-stage fracturing construction parameters of horizontal well in coal seam, which provides reference and guidance for the design of hydraulic fracturing scheme.
VL  - 8
IS  - 5
ER  -

Copy | Download