Haynesville Shale Horizontal Well Completions: What Has Been Learned Through Post-Stimulation Completion Diagnostics and How These Learnings Can Be Employed to Make Better Wells

Warren, Mark; Jayakumar, Swathika; Woodroof, Robert A.

doi:10.2118/187244-ms

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…Input parameters for selected four major shale formations2,12,[24][25][26][27][28] . *The reported values were best estimated based on literature.…”

mentioning

confidence: 99%

Prediction of gas production rate from shale gas reservoirs using a micro–macro analysis

Lin

Zhang

et al. 2023

Sci Rep

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Shale gas has become one of the important contributors to the global energy supply. The declining pattern of the gas production rate with time from an unconventional gas reservoir is due to the depletion of shale gas stored in the nanovoids of the shale formation. However, there are only limited ways to predict the variation of the gas production rate with time from an unconventional gas reservoir. This is due to the multiple transport mechanisms of gas in nano-scale pores and changes in shale gas permeability with pressures in nano-scale pores, which is impacted by the pore structure of the shale. In this study, the permeability-pressure (K-p) relationship for different shales (Eagle Ford, Haynesville, Longmaxi and Opalinus) were determined using an equivalent anisotropic pore network model (PNM). This PNM has REV-scale shale gas flow in randomly generated nanovoids and their connection in the shale matrix, and the multiphase flow of shale gas including viscous flow, slip flow and Knudsen diffusion. These predicted K-p correlations were then used in a finite element model (FEM) to predict the variation of the gas production rate with time (flux-time curves) at the macroscale. The simulation results show that the flux-time curves can be simplified to two linear segments in logarithmic coordinates, which are influenced by the fracture length and initial gas pressure. The predicted results using the PNM-FEM were validated by comparing them with the reported field test data. The method described in this study can be used to upscale the gas transport process from micro- to macroscale, which can provide a predictive tool for the gas production in shales.

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“…Input parameters for selected four major shale formations2,12,[24][25][26][27][28] . *The reported values were best estimated based on literature.…”

mentioning

confidence: 99%

Prediction of gas production rate from shale gas reservoirs using a micro–macro analysis

Lin

Zhang

et al. 2023

Sci Rep

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Shale Gas Novel Technology: Is Coiled Tubing Undulating Completion Compatible in Substituting Multistage Hydraulic Fracturing in Shale Gas Production?

Gunawan

Pratami

Angtony

et al. 2018

Day 1 Mon, October 15, 2018

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The most common technique of shale gas production is massive or multistage hydraulic fracturing. However, as massive multistage fracturing involves relatively higher capital and is of a negative impact to environment, this paper will discuss the application of undulating coiled tubing as a potential substitute for conventional multistage fracturing in shale production - of which is more economical and has proven to be effective in the production of conventional hydrocarbon from thin and low permeability reservoir. This study utilizes reservoir data extracted from publicly available Haynesville Shale data. Haynesville is an organic-rich shale play which extends across northeast Texas and northwest Louisiana, US. Overlain by Bossier shale, Haynesville is a unique shale play compared to other plays in US as it is relatively deep; with true vertical depth (TVD) within the range of 11,000 to 14,500 ft, abnormally high-pressure gradient (0.72 to 0.91 psi/ft), and temperatures greater than 300 °F (Thompson, et al., 2011). Haynesville will be the target shale play in this study that will be assessed by production simulation using both massive hydraulic fracturing and undulated well completion. Each production method will then be assessed economically. This paper shows the applicability of undulated well completion to substitute massive hydraulic fracturing in producing hydrocarbon from shale plays, in terms of technical deliverability as well as economic viability for final warranty of the profitability of the technique. Production performance of undulated well is comparable to that of hydraulically fractured well. Also, the application of undulating drilling proves to have significantly less negative impact on the environment – of which has been the major concern of multistage fracturing due to its pumping at high pressures and huge amount of water needed. Ultimately from economic perspective, the production of shale gas using undulating coiled tubing drilling is attractive as it requires less capital investment. Undulated wells do not require high-pressure pumped water which makes the completion more environmentally friendly than hydraulic fracturing. The unprecedented shale production using undulating coiled tubing drilling will also be the main discussion to be further compared with the widely and commonly used multistage fracturing. Moreover, between multistage fracturing and undulating completion, both technical and economic comprehensive assessments are conducted to see the well deliverability and profitability in shale gas production before subsequent decision to determine more profitable method.

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Shale Gas Novel Technology: Is Coiled Tubing Undulating Completion Compatible in Substituting Multistage Hydraulic Fracturing in Shale Gas Production? (Russian)

Gunawan

Pratami

Angtony

et al. 2018

SPE Russian Petroleum Technology Conference

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Haynesville Shale Horizontal Well Completions: What Has Been Learned Through Post-Stimulation Completion Diagnostics and How These Learnings Can Be Employed to Make Better Wells

Cited by 4 publications

References 7 publications

Prediction of gas production rate from shale gas reservoirs using a micro–macro analysis

Prediction of gas production rate from shale gas reservoirs using a micro–macro analysis

Shale Gas Novel Technology: Is Coiled Tubing Undulating Completion Compatible in Substituting Multistage Hydraulic Fracturing in Shale Gas Production?

Shale Gas Novel Technology: Is Coiled Tubing Undulating Completion Compatible in Substituting Multistage Hydraulic Fracturing in Shale Gas Production? (Russian)

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