Impact of Cluster Spacing on Infill Completions in the Eagle Ford

Evans, Shea; Siddiqui, Shameem; Magness, Jeremy

doi:10.15530/urtec-2018-2899323

Cited by 9 publications

(4 citation statements)

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“…The fracture conductivity ranges from 0.4 to 3.2 md‐ft, with an average of 1.4 md, according to Table . The average fracture conductivity of EFS wells was less than 5 md‐ft . Evans et al indicated that the effective fracture half‐length was about 200 ft because the fracture conductivity was reduced from just 200 ft from the wellbore to <0.1 md‐ft.…”

Section: Resultsmentioning

confidence: 99%

“…The average fracture conductivity of EFS wells was less than 5 md‐ft . Evans et al indicated that the effective fracture half‐length was about 200 ft because the fracture conductivity was reduced from just 200 ft from the wellbore to <0.1 md‐ft. Due to a similar fracturing design, the fracture conductivity of TMS wells drilled between 2012 and 2014 was estimated to be close to EFS wells.…”

Section: Resultsmentioning

confidence: 99%

“…The fracture conductivity ranges from 0.4 to 3.2 md-ft, with an average of 1.4 md, according to Table 2. The average fracture conductivity of EFS wells was less than 5 md-ft. 34 Evans et al 34 indicated that the effective fracture half-length was about 200 ft because the fracture conductivity was reduced from just 200 ft from the wellbore to <0.1 md-ft. Due to a similar fracturing design, the fracture conductivity of TMS wells drilled between 2012 and 2014 was estimated to be close to EFS wells. As can be seen from Figure 6, P-values for both cases are higher than 0.05.…”

Section: Verification Of the Methodsmentioning

confidence: 99%

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Statistical analyses of reservoir and fracturing parameters for a multifractured shale oil reservoir in Mississippi

Yang

Guo

2019

Energy Science & Engineering

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The use of multifractured horizontal wells has improved the efficiency of hydrocarbon extraction from shale gas and oil plays. It is highly desirable to estimate the characteristics of the reservoir and well fracturing through production data analysis. Production rate transient data from 16 wells in the Mississippi sections were analyzed to estimate local reservoir permeability and hydraulic fracture parameters. Key factors affecting well productivity have been identified for optimizing future well completion. Based on the theory of distance of investigation during transient linear flow, the reservoir matrix permeability of TMS was estimated to be between 53 nd and 210 nd, averaging at 116 nd. The matrix permeability follows the lognormal distribution and is considered homogeneous according to the coefficient of variation. The fracture half‐length was estimated using the matrix permeability data from the rate transient analysis. The fracture half‐length was found to have a mean value of 234 ft with a standard deviation of 66 ft in a normal distribution. The fracture conductivity was back‐calculated by matching pseudosteady production rate data to Guo et al's (SPE Reserve Eval Eng.12, 2009, 879) productivity model for boundary‐dominated flow. The fracture conductivity was estimated to range from 0.4 md‐ft to 3.2 md‐ft, averaging at 1.4 md‐ft. Based on Guo et al's (SPE Reserve Eval Eng.12, 2009, 879) well productivity model applied to TMS condition, well productivity can be improved significantly by increasing fracture length and conductivity. Future TMS wells should be completed with conductivity values of greater than 10 md‐ft.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Verification Of the Methodsmentioning

confidence: 99%

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Statistical analyses of reservoir and fracturing parameters for a multifractured shale oil reservoir in Mississippi

Yang

Guo

2019

Energy Science & Engineering

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“…Besides, mechanical properties and in situ stress of shale formation can also lead to uneven fracture extension [25,26]. In the main shale area of North America, such as Haynesville, Permian Basin, Eagle Ford, and Bakken, multicluster hydraulic fracturing has now developed into a mature and reliable technology [25,[27][28][29]. And some effective measures, like limited-entry perforation, have been taken to increase perforation cluster efficiency and promote even propagation of fractures.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Nonuniform Extension of Hydraulic Fracture in Shale Gas Formation

Zhao¹,

Zheng

Kang

et al. 2021

Geofluids

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Hydraulic fracturing with multiple clusters has been a significant way to improve fracture complexity and achieve high utilization of shale formation. This technology has been widely applied in the main shale area of North America. In Changning shale block of China, it, as a promising treatment technology, is being used in horizontal well now. Due to the anisotropy of mechanical property and the stress shadowing effect between multiclusters, fractures would extend nonuniformly and even some clusters are invalid, leading to a poor treatment performance. In this work, based on the geology and engineering characteristics of Changning shale block, different cluster number, cluster spacing, perforation distribution, and flow rate were discussed by the numerical simulation method to clarify multifracture propagation. It is implied that with the reduction of cluster number and the growth of cluster spacing and flow rate, the length and average width of interior fractures are inclined to increase due to the mitigation of stress shadowing effect, contributing to the lower standard deviation (SD) of fracture length, but too small cluster number or too large cluster spacing is not recommended. Besides, the perforation distribution with more perforations in interior fractures can get larger length and average width of interior fractures compared with another two perforation distributions because of more fractional flow rates obtained, which results in more even fracture propagations. In Changning shale block, multicluster hydraulic fracturing with 4-6 clusters in a stage has been employed in 300-400 m well spacing, and diversion technology, limited-entry perforation (36-48 perforations per stage), high flow rate (16 m3/min), and small-sized ceramic proppant (100 mesh) are used to get better shale gas production. To promote the even propagation of fractures further, nonuniform perforation distribution should be introduced in the target shale area.

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Application and cognition of long section multi cluster fracturing technology in shale gas reservoirs

Cai,

Hu,

Wang

et al. 2023

SEG Integration of Geophysics, Geology, and Engineering Workshop, Chengdu, China, 26–28 June 2023

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Impact of Cluster Spacing on Infill Completions in the Eagle Ford

Cited by 9 publications

References 0 publications

Statistical analyses of reservoir and fracturing parameters for a multifractured shale oil reservoir in Mississippi

Statistical analyses of reservoir and fracturing parameters for a multifractured shale oil reservoir in Mississippi

Investigation on Nonuniform Extension of Hydraulic Fracture in Shale Gas Formation

Application and cognition of long section multi cluster fracturing technology in shale gas reservoirs

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