A new approach to finding effective parameters controlling the performance of multi-stage fractured horizontal wells in low-permeability heavy-oil reservoirs using RSM technique

Shirbazo, Armin; Fahimpour, Jalal; Aminshahidy, Babak

doi:10.1007/s13202-020-00931-3

Cited by 12 publications

(6 citation statements)

References 35 publications

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“…Total amount of this depth variation is equal to total reservoir thickness (220 ft). It has to be declared that the used LGR for defining the HFs and horizontal well resembles the one applied in the study by Shirbazo et al [18,25].…”

Section: Model Descriptionmentioning

confidence: 89%

“…Another topic in this area is local grid refinement (LGR). LGR method is one of the most popular techniques to define HFs in a numerical reservoir simulation model because it is easy to use and well accepted in the literature for representing the performance of hydraulically fractured wells in numerical simulation models [18,19]. As a matter of fact, locally refined grids in this approach explicitly demonstrate the main HFs [20].…”

Section: Introductionmentioning

confidence: 99%

“…Size of the grid blocks in an LGR depends on the purpose of the simulation job. The reasonable grid size can be designed by using the results of history matching and well test reports to verify the accurate production prediction of the constructed model [18,22]. Some studies suggested different ways to create LGRs in simulation models such as Cartesian LGR in which grid sizes change alongside the various directions [18], cylindrical LGR that mostly encompasses near-wellbore illustrating for detailed pressure distributions [23], and some other types such as hexagonal, curvilinear, hybrid Cartesian, and hybrid-hexagonal LGRs [24].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of wastewater disposal in depleted tight gas reservoirs: A sustainable resources approach

Taghavinejad¹,

Shirbazo²

2021

JCM

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Wastewater injection into oil and gas fields is implemented for various purposes via injection wells. Disposing of wastewater, which is mostly waste saltwater produced with hydrocarbons in oil and gas fields, into underground petroleum reservoirs are usually tied with environmental purposes. Injection of wastewater into geologic strata may encompass different applications: hazardous or non-hazardous wastewater disposal, enhanced recovery from petroleum reservoirs or merely wastewater storage. Aside from the purpose of wastewater injection, modeling of wastewater flow in porous media of underground rock strata can be challenging in different petroleum reservoirs and wells. In this study, a tight gas reservoir (TGR)—as a large-scale sustainable material to store wastewater—is considered to be studied for water disposal via a multistage fractured horizontal well (MSFHW) by numerical simulation. Host rock layer is considered to be initially saturated with low-pressure methane gas and water injection has to be performed through the hydraulic fractures of the MSFHW into the rock pore volume. Injection is performed under constant bottomhole flowing pressure and several sensitivity analyses are investigated to outline important rock characteristics in TGRs affecting performance of wastewater injection into them.

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Section: Model Descriptionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of wastewater disposal in depleted tight gas reservoirs: A sustainable resources approach

Taghavinejad¹,

Shirbazo²

2021

JCM

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“…The simulation of tight oil reservoir productivity is crucial for optimizing fracturing design. In their study, Bazan et al [20] investigated the impact of fracture parameters and interference on fracture geometries and well production, while Armin Shirbazo et al [21] focused on the influence of hydraulic fracture parameters on horizontal well productivity, emphasizing the significant role of fracture stages and conductivity in production improvement. Increasing the number of fracture stages and conductivity can help increase production, but the number of fracture stages and the conductivity cannot be increased indefinitely, and there is an optimal value for both.…”

Section: Introductionmentioning

confidence: 99%

A New Fracturing Method to Improve Stimulation Effect of Marl Tight Oil Reservoir in Sichuan Basin

Wang,

Fan,

et al. 2023

Processes

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China’s argillaceous limestone reservoir has a lot of oil and gas resources, and hydraulic fracturing of the argillaceous limestone reservoir faces many difficulties. The first problem is that the heterogeneity of the argillaceous limestone reservoir is strong, and it is difficult to optimize fracturing parameters. The second problem is that there are a lot of natural fractures in the argillaceous limestone reservoir, which leads to a lot of fracturing fluid loss. The third problem is that the closure pressure of the argillaceous limestone reservoir is high, and the conductivity of fractures decreases rapidly under high closure pressure. The last problem is that the fracture shape of the argillaceous limestone reservoir is complex, and the law of proppant migration is unclear. The main research methods in this paper include reservoir numerical simulation, fluid-loss-reducer performance evaluation, flow conductivity tests and proppant migration visualization. To solve the above problems, this paper establishes the fracturing productivity prediction model of complex lithology reservoirs and defines the optimal hydraulic fracturing parameters of the argillous limestone reservoir in the Sichuan Basin. The 70/140 mesh ceramide was selected as the fluid loss additive after an evaluation of the sealing properties of different mesh ceramides. At the same time, the hydraulic fracture conductivity test is carried out in this paper, and it is confirmed that the fracture conductivity of 70/140 mesh and 40/70 mesh composite particle-size ceramics mixed according to the mass ratio of 5:5 is the highest. When the closure pressure is 40 MPa, the conductivity of a mixture of 70/140 mesh ceramic and 40/70 mesh ceramic is 35.6% higher than that of a mixture of 70/140 mesh ceramic and 30/50 mesh ceramic. The proppant migration visualization device is used to evaluate the morphology of the sand dike formed by the ceramsite, and it is clear that the shape of the sand dike is the best when the mass ratio of 70/140 mesh ceramsite and 40/70 mesh ceramsite is 6:4. The research results achieved a good stimulation effect in the SC1 well. The daily oil production of the SC1 well is 20 t, and the monitoring results of the wide-area electromagnetic method show that the fracturing fracture length of the SC1 well is up to 129 m.

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“…The numerical modeling and simulation of shale reservoirs exploited by MSFHWs is differed from nonhydraulically fractured reservoirs. Regarding some of the related works [14,28,29], defining a MSFHW in a numerical simulation model can be done using local grid refinement (LGR).…”

Section: Introductionmentioning

confidence: 99%

CO2 Capture and Storage Performance Simulation in Depleted Shale Gas Reservoirs as Sustainable Carbon Resources

Shirbazo¹,

Taghavinejad²,

Bagheri³

2021

JCM

Self Cite

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Underground carbon capture and sequestration (CCS) is a useful technique for separating this kind of greenhouse gas from atmosphere and store it under the surface of the earth. As a matter of fact, CO2 can be transferred to underground petroleum reservoirs which are initially contained oil and gas, or aquifers which are initially saturated with water. This kind of CCS takes place using an injection well which is drilled from surface to the target underground bedrocks. A shale gas reservoir (SGR) is a type of petroleum gas reservoir in which natural gas is stored in ultra-tight pores of the shale rock. In this study, a flow modeling analysis in SGR with a multi-stage fractured horizontal well (MSFHW) is conducted using numerical simulation. In this shale layer, a horizontal well is drilled and several transverse hydraulic fractures, for increasing the flow efficiency between the well and porous medium, are created. The studied SGR – a depleted reservoir acting as a macroscopic sustainable material for the CCS – is initially saturated with methane gas, and carbon dioxide is required to be injected for the storage. The most outstanding results of this study is about sensitivity analyses for SGR permeability with different conditions of gas adsorption and stress-dependent permeability which are from important features of SGRs. The results show a minor reduction in cumulative gas injection due to the effect of stress-dependent permeability in all measures for reservoir permeabilities. Furthermore, gas sorption shows a considerable positive correlation with CO2 storage response in high-permeability SGR and a minor increasing effect on SGRs with lower permeability values.

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A new approach to finding effective parameters controlling the performance of multi-stage fractured horizontal wells in low-permeability heavy-oil reservoirs using RSM technique

Cited by 12 publications

References 35 publications

Analysis of wastewater disposal in depleted tight gas reservoirs: A sustainable resources approach

Analysis of wastewater disposal in depleted tight gas reservoirs: A sustainable resources approach

A New Fracturing Method to Improve Stimulation Effect of Marl Tight Oil Reservoir in Sichuan Basin

CO2 Capture and Storage Performance Simulation in Depleted Shale Gas Reservoirs as Sustainable Carbon Resources

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