Comprehensive evaluation of geological and engineering factors affecting fracturing effectiveness in tight sandstone reservoirs

SU Hang; LI Ruixue; DENG Hucheng; QIN Yuanwei; FU Meiyan; HE Jianhua; ZENG Qinggao; SONG Linke; ZHANG Jiawei

doi:10.11781/sysydz2024061349

Volume 46 Issue 6

Nov. 2024

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Article Navigation > PETROLEUM GEOLOGY & EXPERIMENT > 2024 > 46(6): 1349-1361

SU Hang, LI Ruixue, DENG Hucheng, QIN Yuanwei, FU Meiyan, HE Jianhua, ZENG Qinggao, SONG Linke, ZHANG Jiawei. Comprehensive evaluation of geological and engineering factors affecting fracturing effectiveness in tight sandstone reservoirs[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(6): 1349-1361. doi: 10.11781/sysydz2024061349

Citation:

SU Hang, LI Ruixue, DENG Hucheng, QIN Yuanwei, FU Meiyan, HE Jianhua, ZENG Qinggao, SONG Linke, ZHANG Jiawei. Comprehensive evaluation of geological and engineering factors affecting fracturing effectiveness in tight sandstone reservoirs[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(6): 1349-1361. doi: 10.11781/sysydz2024061349

Citation:

SU Hang, LI Ruixue, DENG Hucheng, QIN Yuanwei, FU Meiyan, HE Jianhua, ZENG Qinggao, SONG Linke, ZHANG Jiawei. Comprehensive evaluation of geological and engineering factors affecting fracturing effectiveness in tight sandstone reservoirs[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(6): 1349-1361. doi: 10.11781/sysydz2024061349

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Comprehensive evaluation of geological and engineering factors affecting fracturing effectiveness in tight sandstone reservoirs

doi: 10.11781/sysydz2024061349

SU Hang^1
,,
LI Ruixue^{1, 2
,
,},
DENG Hucheng^{1, 2},
QIN Yuanwei¹,
FU Meiyan^{1, 2},
HE Jianhua^{1, 2},
ZENG Qinggao³,
SONG Linke³,
ZHANG Jiawei^{1, 4}

1.
College of Energy (College of Modern Shale Gas Industry), Chengdu University of Technology, Chengdu, Sichuan 610059, China
2.
State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China
3.
Tight Oil and Gas Exploration and Development Project Department, PetroChina Southwest Oil and Gasfield Company, Chengdu, Sichuan 610051, China
4.
Engineering Technology Supervision Center, PetroChina Changqing Oilfield Company, Xi'an, Shaanxi 710018, China

Received Date: 2024-02-14
Rev Recd Date: 2024-10-22
Publish Date: 2024-11-28

Abstract

Abstract

China's tight sandstone reservoirs possess immense hydrocarbon reserves with substantial development potential. Hydraulic fracturing in horizontal wells is a crucial enhancement method for developing these reservoirs. In tight sandstone reservoirs of the Jurassic Shaximiao Formation of the J gas field in the transitional zone between central and western Sichuan, differences in rock mechanical properties and geomechanical characteristics result in significant variations in fracturing effectiveness across wells despite similar fracturing processes. To enhance the effectiveness and specificity of fracturing, this study examined the impact of three geological factors—brittleness index, minimum horizontal principal stress, and differences between two horizontal principal stresses—on fracturing effectiveness. Based on the difference in horizontal principal stress, the geological conditions in the study area were classified into two categories, type Ⅰ and type Ⅱ, from favorable to less favorable. The influence of various engineering factors on fracturing effectiveness under these two types of geological conditions was analyzed, and optimal ranges for engineering parameters under these conditions were proposed. The Analytic Hierarchy Process (AHP) and Grey Relational Analysis (GRA) were employed to calculate the influence weight of each geological and engineering parameter on fracturing effectiveness, and then a quantitative evaluation model was established. Based on the correlation with fracturing effectiveness, the AHP-based model was selected as the optimal method to evaluate the fracturing effectiveness in the study area. It was also used to verify the rationality of the proposed ranges for engineering parameters outlined in the study and the applicability of the comprehensive evaluation model for fracturing effectiveness. This paper revealed significant differences in the suggested parameter ranges for horizontal well fracturing engineering under different geological conditions, with notably broader ranges for wells in more favorable conditions than those in less favorable ones. The AHP-based model was identified as the optimal geological and engineering comprehensive evaluation model for assessing the fracturing effectiveness in the study area.
- fracturing effectiveness,
- geological and engineering comprehensive analysis,
- Analytic Hierarchy Process,
- Shaximiao Formation,
- Jurassic,
- tight sandstone,
- Sichuan Basin

Author HE Jianhua is a Young Editorial Board Member of this journal. HE Jianhua did not take part in peer review or decision making of this article.
SU Hang completed the initial draft of the paper. LI Ruixue and DENG Hucheng were responsible for the overall conceptualization and revision of the paper. QIN Yuanwei participated in literature research and data processing. FU Meiyan and HE Jianhua participated in article discussion and result validation. ZENG Qinggao and SONG Linke provided material support. ZHANG Jiawei proofread the article. All authors have read the last version of the paper and consented to its submission.

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References(41)

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Comprehensive evaluation of geological and engineering factors affecting fracturing effectiveness in tight sandstone reservoirs

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Comprehensive evaluation of geological and engineering factors affecting fracturing effectiveness in tight sandstone reservoirs

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