Modeling the Risk of Commercial Failure for Hydraulic Fracturing Projects Due to Reservoir Heterogeneity

Parvizi, Hadi; Gomari, Sina Rezaei; Nabhani, Farhad; Monfared, Abolfazl Dehghan

doi:10.3390/en11010218

Cited by 12 publications

(5 citation statements)

References 33 publications

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“…The creation of large stimulated reservoir volumes (SRVs) has been achieved through breakthroughs in hydraulic fracturing technology; however, fracture treatment is not necessarily effective [3]. Operators have started utilizing tighter spaced clusters, longer stage lengths, and greater proppant volumes in their stimulation designs [4,5]. The ultimate oil recovery reported by several studies is less than 8% due to a rapid decline in unconventional well performance, and by approximately 75% within the first two years of well production (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Unconventional Well Test Analysis for Assessing Individual Fracture Stages through Post-Treatment Pressure Falloffs: Case Study

Ellafi

Jabbari

2021

Energies

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Researchers and operators have recently become interested in the individual stage optimization of unconventional reservoir hydraulic fracture. These professionals aim to maximize well performance during an unconventional well’s early-stage and potential Enhanced Oil Recovery (EOR) lifespan. Although there have been advances in hydraulic fracturing technology that allow for the creation of large stimulated reservoir volumes (SRVs), it may not be optimal to use the same treatment design for all stages of a well or many wells in an area. We present a comprehensive review of the main approaches used to discuss applicability, pros and cons, and a detailed comparison between different methodologies. Our research outlines a combination of the Diagnostic Fracture Injection Test (DFIT) and falloff pressure analysis, which can help to design intelligent production and improve well performance. Our field study presents an unconventional well to explain the objective optimization workflow. The analysis indicates that most of the fracturing fluid was leaked off through natural fracture surface area and resulted in the estimation of larger values compared to the hydraulic fracture calculated area. These phenomena might represent a secondary fracture set with a high fracture closure stress activated in neighbor stages that was not well-developed in other sections. The falloff pressure analysis provides significant and vital information, assisting operators in fully understanding models for fracture network characterization.

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Section: Introductionmentioning

confidence: 99%

Unconventional Well Test Analysis for Assessing Individual Fracture Stages through Post-Treatment Pressure Falloffs: Case Study

Ellafi

Jabbari

2021

Energies

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“…Methods exist for reducing skin factor caused by condensate saturation are classified as mechanical and chemical approaches. Some mechanical approaches are reperforating (Aminnaji et al 2015), horizontal well, and hydraulic fracturing (Parvizi et al 2018). Some chemical approach are near-wellbore wettability alteration (Sharifzadeh et al 2013;Karandish et al 2015), injection of solvent (Aminnaji et al 2015), dry gas (Aminnaji et al 2015), water (Failed 1992), andnitrogen (Failed 1992).…”

Section: Future Studiesmentioning

confidence: 99%

A comprehensive research in chemical consolidator/stabilizer agents on sand production control

Tabar¹,

Bagherzadeh²,

Shahrabadi³

et al. 2021

J Petrol Explor Prod Technol

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Sand or fine is a typical product in many processing of oil production from unconsolidated and weakly consolidated formations. High variation of in situ stress, fluid production rate above maximum sand-free rate, and water production are main primary sources of the sand production. Sand production can cause hazardous operational problems to the facilities, pipes, and wellbore. Hence, it is a significant problem that requires to be managed and studied. To minimize the operational impacts of particle migration, chemical consolidators/stabilizers can be utilized to alter surface properties of sand and formation particles. The decreasing zeta potential besides increasing the cohesion between sand and formation particles could result in controlled sand production. However, understanding the mechanism and application of chemical methods to alleviate sand production is not well-discussed. This study presents and discusses chemical consolidator/stabilizer agents, which may be applied for managing sand production in the petroleum industry. This was achieved through a comprehension review of the literature and the application of chemical consolidators/stabilizers in other fields such as bauxite residue (red mud and red sand) control, desert sand, mine reclamation, wind erosion control, unpaved road modification, and enhancement of water retention and soil infiltration properties that are similar to formation sand. Standard experimental methods in various fields, for performance analysis of chemical consolidator/stabilizer agents, are compared and summarized. The consolidation/stabilization mechanisms of various types of chemical consolidator/stabilizer agents are discussed and compared. This review potentially can be used to inhibit blind usage of chemicals and functions as a reference to additional research in sand production control in petroleum engineering. The results are appropriate for extending quantitative approaches for performance evaluation of sand consolidator/stabilizer agents.

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“…Hydraulic fracturing treatments significantly affect the cost of oil and gas extraction from unconventional reservoirs and their global prices. Thus, making decisions on the execution of hydraulic fracturing projects requires a higher level of integration of technical, commercial, and uncertainty analyses [21].…”

Section: Introductionmentioning

confidence: 99%

Anisotropy of Strength and Elastic Properties of Lower Paleozoic Shales from the Baltic Basin, Poland

2021

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The paper presents the results of laboratory studies on the strength–strain properties of shales representing four siltstone-claystone lithostratigraphic units occurring in the Baltic Basin. Laboratory studies in a triaxial stress state were conducted as single failure tests on cylindrical samples oriented parallel and perpendicular to lamination within the rocks. Mutually perpendicular samples were cut out from the same drill core sections in order to determine mechanical anisotropy. Samples oriented parallel to lamination were characterised by values of the static Young’s modulus twice as high as from samples oriented perpendicular to lamination. Similar variability was observed in the case of maximum differential stress values and Poisson’s ratio. Samples parallel to lamination registered notably lower axial strains, which influenced increased values of Young’s modulus and Poisson’s ratio. The rocks studied are characterised by VTI type (vertical transverse isotropy) internal anisotropy of the rock matrix, which significantly influences the anisotropy of their geomechanical properties.

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Modeling the Risk of Commercial Failure for Hydraulic Fracturing Projects Due to Reservoir Heterogeneity

Cited by 12 publications

References 33 publications

Unconventional Well Test Analysis for Assessing Individual Fracture Stages through Post-Treatment Pressure Falloffs: Case Study

Unconventional Well Test Analysis for Assessing Individual Fracture Stages through Post-Treatment Pressure Falloffs: Case Study

A comprehensive research in chemical consolidator/stabilizer agents on sand production control

Anisotropy of Strength and Elastic Properties of Lower Paleozoic Shales from the Baltic Basin, Poland

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