New Insight to Interlayer Interference During Three-Gas Co-production Based on a Wellbore–Reservoir Coupling Model

Liang, Wei; Wang, Jingguo; Li, Peibo; Leung, C.F.; Goh, Siang-Huat; Sang, Shuxun

doi:10.1007/s11053-023-10230-3

Cited by 4 publications

(2 citation statements)

References 40 publications

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“…However, the differences in properties between layers can result in interlayer interference and reduced gas production efficiency. [64][65][66] Permeability and initial reservoir pressure are key parameters that should be considered before deciding on the coproduction of multiple layers at different depths, nonetheless, the impact of the combined performance of each layer on gas production has not been thoroughly understood.…”

Section: Discussion On Key Technologies Productivity Simulation and I...mentioning

confidence: 99%

Potential on joint development of three-gas reservoirs in the Qiongdongnan Basin

Wu,

Sun,

et al. 2024

TIG

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<p>Gas hydrates are typically found in the fine-grained sediments with low abundance and strong heterogeneity in the northern South China Sea. To date, although numerous gas hydrate reservoirs have been discovered, commercial exploitation remains highly challenging. Previous studies show that the Qiongdongnan Basin exhibits coexistence of gas hydrates, shallow gas and deep gas reservoirs. The hydrate-bound gases are a mixture of thermogenic and biogenic gas, mainly sourced from the granite buried hill reservoir, central canyon channel of the Lingshui Depression and the Yacheng Formation. In this study, we described a new development concept termed ��Three-gas Joint Development�� (TJD), to elucidate the simultaneous exploitation of these three gas reservoirs. Based on the distribution of three-gas reservoirs, three different TJD plans are proposed. If the relative distance between three-gas reservoirs does not exceeds the extension limit, a single production platform is capable of exploiting all three-gas reservoirs. A vertical well is suggested if the deep gas reservoir lies directly below the gas hydrates and shallow gas. Otherwise, multilateral well should be used to exploit different gas reservoirs with various branches in a main wellbore. However, several key issues remain unsolved. Numerical simulation of TJD should be conducted to evaluate interlayer interference and productivity. Efficient sand control and wellbore stability techniques, such as frac-packing and high-performance drilling fluids, are recommended when drilling unconsolidated sediments. Once these key technologies are overcome, TJD can provide a feasible approach for the commercial development of gas hydrates.</p>

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Section: Discussion On Key Technologies Productivity Simulation and I...mentioning

confidence: 99%

Potential on joint development of three-gas reservoirs in the Qiongdongnan Basin

Wu,

Sun,

et al. 2024

TIG

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“…However, these renewable energy sources have unpredictable, intermittent, and fluctuation characteristics [7], which pose great challenges to the stable operation of the power system. During this period, although numerous energy extraction strategies and methods have emerged, such as unconventional shale gas extraction [8,9], coalbed gas-three gas coproduction [10][11][12], carbon dioxide geological storage [13], and salt cavern energy storage [14,15], China still mainly relies on traditional energy sources such as coal [16]. However, due to the relatively limited acceptance capacity of the power system for large-scale renewable energy, a large amount Energies 2024, 17, 953 2 of 15 of renewable energy has not been fully integrated into the power grid for supply [17].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Transient Response of Compressed Air Energy Storage in the Interaction between Gas Storage Chambers and Horseshoe-Shaped Tunnels in an Abandoned Coal Mine

Li,

Sun

et al. 2024

Energies

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This study focuses on the renovation and construction of compressed air energy storage chambers within abandoned coal mine roadways. The transient mechanical responses of underground gas storage chambers under a cycle are analyzed through thermal-solid coupling simulations. These simulations highlight changes in key parameters such as displacement, stress, and temperature within the chamber group during the loading and unloading processes of compressed air energy storage. It is found that within a cycle, the small circular chamber experiences the most significant deformation, with an average peak displacement of 0.24 mm, followed by the large circular chamber and horseshoe-shaped tunnels. The small circular chamber exhibits maximum tensile and compressive stresses. Therefore, special attention in engineering practice should be paid to the long-term safety and stability of small circular tunnels, and the stability of horseshoe-shaped tunnels should be also carefully considered. The findings from this study offer some insights for theoretical support and practical implementation in the planning, design, construction, and operation of high-pressure underground gas storage chambers for compressed air energy storage.

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Opportunities and challenges for gas coproduction from coal measure gas reservoirs with coal‐shale‐tight sandstone layers: A review

Liang,

Wang,

Leung

et al. 2024

Deep Underground Science and Engineering

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The extraction of coal measure gas has been shifted toward thin gas reservoirs due to the depletion of medium‐thick gas reservoirs. The coproduction of coalbed gas, shale gas, and tight sandstone gas (called a multisuperposed gas system) is a key low‐cost technology for the enhancement of natural gas production from thin gas reservoirs in coal measure. As an emerging engineering exploitation technology at its early stage of development, gas coproduction confronts various engineering challenges in hydraulic fracturing, bottom‐hole pressure regulation, well network arrangement, and extraction sequence. The current understanding of the opportunities and challenges in the gas coproduction from the multisuperposed gas system is not comprehensive enough. In this case, the previous achievements in the field of gas coproduction should be urgently reviewed to provide valuable guidance and recommendations for further development. This review first discusses the regional and spatial distribution characteristics and possible reservoir combinations of gas reservoirs in coal measure. Then, the basic properties of different reservoirs, engineering challenges, and interlayer interference are comparatively analyzed and discussed. The current simulation models for gas coproduction and potential future research directions are further explored. The results indicate that the coupling effects of reservoir heterogeneity, interwell interference, and geological structure for increasing coproduction prediction accuracy should be included in future simulation models for gas coproduction. Careful investigation is required to explore the mechanisms and their further quantifications on the effects of interlayer interference in gas coproduction. The fractal dimension as a scale can play an important role in the characterization of the gas and water transport in different reservoirs. The machine learning methods have tremendous potential to provide accurate and fast predictions for gas coproduction and interlayer interference.

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New Insight to Interlayer Interference During Three-Gas Co-production Based on a Wellbore–Reservoir Coupling Model

Cited by 4 publications

References 40 publications

Potential on joint development of three-gas reservoirs in the Qiongdongnan Basin

Potential on joint development of three-gas reservoirs in the Qiongdongnan Basin

A Study on the Transient Response of Compressed Air Energy Storage in the Interaction between Gas Storage Chambers and Horseshoe-Shaped Tunnels in an Abandoned Coal Mine

Opportunities and challenges for gas coproduction from coal measure gas reservoirs with coal‐shale‐tight sandstone layers: A review

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