Natural Gas Industry B最新文献

{"title":"Optimization of fracturing stages/clusters in horizontal well based on unsupervised clustering of bottomhole mechanical specific energy on the bit","authors":"Shimeng Hu ,&nbsp;Mao Sheng ,&nbsp;Shanzhi Shi ,&nbsp;Jiacheng Li ,&nbsp;Shouceng Tian ,&nbsp;Gensheng Li","doi":"10.1016/j.ngib.2023.11.002","DOIUrl":"10.1016/j.ngib.2023.11.002","url":null,"abstract":"<div><p>Multi-cluster perforation and multi-staged fracturing of horizontal well is one of the main technologies in volumetric fracturing stimulation of unconventional oil and gas reservoirs, but unconventional reservoirs in China are generally of strong heterogeneity, which causes different fracture initiation pressures in different positions of lateral, making it difficult to ensure the balanced fracture initiation and propagation between clusters in multi-cluster perforating. It is in urgent need to precisely evaluate the difference in rock strength in lateral and determine the well section with similar rock strength to deploy fractures, so as to reach the goal of balanced stimulation. Based on the drilling and logging data, this paper establishes an unsupervised clustering model of mechanical specific energy of bit at the bottomhole the lateral. Then, the influence of drill string friction, composite drilling and jet-assisted rock breaking on the mechanical specific energy is analyzed, and the distribution and clustering categories of bottomhole mechanical specific energy with decimeter spatial resolution are obtained. Finally, a fracture deployment optimization method for horizontal well volumetric fracturing aiming balanced stimulation is developed by comprehensively considering inter-fracture interference, casing collar position, plug position, and clustering result of bottomhole mechanical specific energy. The following results are obtained. First, compared with brittleness index, Poisson's ratio and stress difference, perforation erosion area is in a stronger correlation with the mechanical specific energy, and the mechanical specific energy can effectively characterize the difference in the amount of proppant injected into the perforation clusters in the lateral, so it can be served as one of the important indicators for the selection of fracture deployment position. Second, the drilling and logging data cleaning and smoothing and the clustering number selection by the elbow method are the key steps to obtain the clustering results of bottomhole mechanical specific energy, which can tell the difference in the mechanical specific energy with decimeter-level resolution. Third, the interval with mechanical specific energy within 10% of the average value in the section is selected for deploying perforation clusters, and the compiled computer algorithm can automatically determine the optimal position of fracturing section and cluster, so as to realize the differential design of stage spacing and cluster spacing. In conclusion, the research results can further improve the fractures deployment efficiency and balanced stimulation of volumetric fracturing in unconventional oil and gas reservoirs, and this technology is expected to provide ideas and new methods for the fracture deployment optimization of horizontal well volumetric fracturing in unconventional oil and gas reservoirs.</p></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"10 6","pages":"Pages 583-590"},"PeriodicalIF":3.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S235285402300075X/pdfft?md5=6800db44d5f5722e83c6fb2d2ae8721c&pid=1-s2.0-S235285402300075X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138622804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modelling underground coal gasification: What to start with","authors":"Liangliang Jiang ,&nbsp;Lele Feng ,&nbsp;Wu Gao ,&nbsp;Jin Sun ,&nbsp;Anqi Shen ,&nbsp;Jiang Liu ,&nbsp;Zixiang Wei ,&nbsp;Dan Xue ,&nbsp;Shanshan Chen ,&nbsp;Yanpeng Chen ,&nbsp;Zhangxin Chen ,&nbsp;S.M. Farouq Ali","doi":"10.1016/j.ngib.2023.11.006","DOIUrl":"10.1016/j.ngib.2023.11.006","url":null,"abstract":"<div><p>Underground coal gasification (UCG) is widely regarded as a clean coal technology that holds enormous potential to decarbonize the world's coal industry. It converts coal underground into combustible syngas through a set of complex physiochemical events. Experimental and numerical efforts over the past century have contributed to the development of UCG around the world; however, tapping the world's deep-situated coal resources with UCG requires substantial contributions from numerous high-quality researchers. To facilitate effective engagement, this paper will provide a background on where to start if one wishes to undertake UCG modelling. First, a brief description of the fundamental phenomena involved in UCG is given. Then, a succinct introduction of the widely used modelling software is rendered, followed by a description of UCG studies to provide insight how to tune the various software packages for modelling UCG and where their strengths lie. This paper shall serve as guidance to new UCG modellers.</p></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"10 6","pages":"Pages 626-637"},"PeriodicalIF":3.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352854023000797/pdfft?md5=83702b73bdd8bb93ee9466d9dcb69778&pid=1-s2.0-S2352854023000797-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138991407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the controlling effect of new annulus materials on casing deformation in shale gas wells","authors":"Fei Yin ,&nbsp;Pengju Ye ,&nbsp;Biaobin Shi ,&nbsp;Liu Yang ,&nbsp;Jingyuan Xu ,&nbsp;Yingjie Chen ,&nbsp;Hongquan Xia ,&nbsp;Leichuan Tan ,&nbsp;Chunquan Wang","doi":"10.1016/j.ngib.2023.11.009","DOIUrl":"10.1016/j.ngib.2023.11.009","url":null,"abstract":"<div><p>Shale gas horizontal wells have severe problems of casing deformation and failure due to formation displacement during fracturing. Statistics show that casing deformation problems occur frequently in the development of shale gas, especially in Sichuan Basin. Furthermore, the phenomenon of formation extrusion and fault slip is serious, which has caused great obstacles to the development of shale gas in China. In view of the current lack of casing deformation control methods, a finite element model of a wellbore under formation displacement load is established in this paper. The stress and deformation of the casing are simulated, and the mitigating effects of new annular materials such as a modified cement sheath and rubber are evaluated. Results indicate that the formation extrusion and fault slip can cause radial oval deformation and axial S-shaped deformation of the production casing, respectively. The use of a modified cement sheath can provide a little mitigating effect on casing deformation. Meanwhile, using rubber cementing can play a strong protective role for the production casing and avoid casing deformation to a certain extent. This research can provide a new way and important reference for the prevention and control of casing deformation in shale gas wells.</p></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"10 6","pages":"Pages 638-647"},"PeriodicalIF":3.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352854023000827/pdfft?md5=ae5d050e476c3b443a0a359244948e56&pid=1-s2.0-S2352854023000827-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139023078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Key technologies and orientation of EGR for the Sulige tight sandstone gas field in the Ordos Basin","authors":"Zheng Wu ,&nbsp;Qianfeng Jiang ,&nbsp;You Zhou ,&nbsp;Yaning He ,&nbsp;Yanyan Sun ,&nbsp;Wei Tian ,&nbsp;Changjing Zhou ,&nbsp;Weijie An","doi":"10.1016/j.ngib.2023.11.005","DOIUrl":"10.1016/j.ngib.2023.11.005","url":null,"abstract":"<div><p>The Sulige Gas Field in the Ordos Basin is the largest tight gas field in China, with proved reserves exceeding 2 × 10¹² m³. As the main contributor to gas production in PetroChina Changqing Oilfield Company, The Sulige Gas Field is in the stage of stable production. Maximizing the stable production period is a focus and challenge for the gas field now. To address a series of problems influencing the efficient development of Sulige gas field, such as large-scale remaining gas reserves between wells/layers and low ratio of employed reserves, the main technologies for enhanced gas recovery (EGR) of tight gas reservoirs were developed by multidisciplinary research with respect to development geology, reservoir engineering, drilling and production process, and surface gathering and transportation. Experiments were conducted on reservoir description and remaining gas characterization, well pattern thickening optimization, vertical well separate-layer fracturing, horizontal-well multi-stage multi-cluster volume fracturing for their improvement and upgrading. The orientation of EGR for tight gas reservoirs is proposed. The following results are obtained. First, well pattern thickening optimization is the most important EGR method, which can increase the recovery rate by more than 6%. Second, based on continuous upgrading and promotion, either of reservoir stimulation technology and drainage gas recovery technology can increase the recovery rate by more than 2%. The gathering and transportation technology which further reduces the wellhead pressure can increase the recovery rate by about 1.5%. Third, the EGR technology should be oriented to maximize the quantity of employed reserves, especially by way of new technologies such as fine remaining gas characterization, well pattern/type optimization, cross-layer fracturing of a multi-thin-layer reservoir by horizontal wells, intelligent drainage gas recovery, and multi-stage pressurization. It is concluded that the development of key EGR technologies will help increase the recovery rate of The Sulige Gas Field by 10%–15%, and will provide an effective support for The Sulige Gas Field to maintain the production at 300 × 10⁸ m³/a for a long term and for the Changqing gas province to increase the production to 500 × 10⁸ m³/a, which will ultimately ensure the national energy security.</p></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"10 6","pages":"Pages 591-601"},"PeriodicalIF":3.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352854023000785/pdfft?md5=93e31bc6988d73feba0ec0fc7dfe0af9&pid=1-s2.0-S2352854023000785-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138616428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Brazilian splitting experiment and finite element simulation analysis of the influence of bedding loading angle on shale fracture mode","authors":"Yingkun Zhang ,&nbsp;Shangbin Chen ,&nbsp;Xiaohang Zhai ,&nbsp;Jamil Khan ,&nbsp;Yuhang Zhang","doi":"10.1016/j.ngib.2023.11.007","DOIUrl":"10.1016/j.ngib.2023.11.007","url":null,"abstract":"<div><p>During the diagenetic processes of compaction and cementation, shale forms multiple beddings, significantly effecting the rock anisotropy. Therefore, it is important to study the effect of bedding on the mechanical properties of shale to guide fracturing engineering. To study the failure mode and fracture morphology of shale with bedding planes under different bedding dip angles, Brazilian disc splitting tests and finite element numerical simulations are performed for shale samples and the results are compared. (1) The bedding angle has a significant effect on the failure mode and tensile strength of shale, and the tensile strength tends to increase with increasing bedding angle. (2) The failure modes of shale under different bedding dip angles can be divided into three types: tensile failure along the bedding plane; comprehensive shear and tensile failure of the matrix and the bedding plane; and matrix tensile failure. (3) The direction of secondary cracks is mostly perpendicular to the bedding plane, and a smaller angle between the load application direction and the bedding direction results in a larger number of generated cracks with more complex shapes. (4) When the loading angle of the bedding is 30°, the tensile strength is low and the matrix and the bedding plane are comprehensively destroyed by shear and tension, resulting in a more complex joint mesh; conversely, when the bedding angle is greater than 60°, the tensile strength increases and the complexity of the seam mesh decreases. These findings can provide guidance for the selection of the bedding angle and the design of fracturing schemes in fracturing engineering.</p></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"10 6","pages":"Pages 602-612"},"PeriodicalIF":3.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352854023000803/pdfft?md5=e81fd6a6a92b296631dd1cd5d2f3dae8&pid=1-s2.0-S2352854023000803-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139026394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pore-scale numerical simulation of supercritical CO2-brine two-phase flow based on VOF method","authors":"Yongfei Yang,&nbsp;Jinlei Wang,&nbsp;Jianzhong Wang,&nbsp;Qi Zhang,&nbsp;Jun Yao","doi":"10.1016/j.ngib.2023.08.002","DOIUrl":"https://doi.org/10.1016/j.ngib.2023.08.002","url":null,"abstract":"<div><p>CO₂ capture and storage technology is favorable for the reduction of CO₂ emissions. In recent years, a great number of research achievements have been obtained on CO₂ geological storage from nano scale to oil/gas reservoir scale, but most studies only focus on the flow behaviors in single-dimension porous media. Besides, the physical experiment method is influenced by many uncertain factors and consumes a lot of time and cost. In order to deeply understand the flow behaviors in the process of CO₂ geological storage in microscopic view and increase the volume of CO₂ geological storage, this paper established 2D and 3D models by using VOF (Volume of Fluid) method which can track the dynamic change of two-phase interface, to numerically simulate supercritical CO₂-brine two-phase flow. Then, the distribution characteristics of CO₂ clusters and the variation laws of CO₂ saturation under different wettability, capillary number and viscosity ratio conditions were compared, and the intrinsic mechanisms of CO₂ storage at pore scale were revealed. And the following research results were obtained. First, with the increase of rock wettability to CO₂, the sweep range of CO₂ enlarged, and the disconnection frequency of CO₂ clusters deceased, and thus the volume of CO₂ storage increased. Second, with the increase of capillary number, the displacement mode transformed from capillary fingering to stable displacement, and thus the volume of CO₂ storage increased. Third, as the viscosity of injected supercritical CO₂ gradually approached that of brine, the flow resistance between two-phase fluids decreased, promoting the \"lubricating effect\". As a result, the flow capacity of CO₂ phase was improved, and thus the volume of CO₂ storage was increased. Fourth, the influence degrees of wettability, capillary number and viscosity ratio on CO₂ saturation were different in multi-dimensional porous media models. In conclusion, the CO₂-brine two-phase flow simulation based on VOF method revealed the flow mechanisms in the process of CO₂ geological storage at pore scale, which is of guiding significance to the development of CCUS technology and provides theoretical guidance and technical support for the study of CO₂ geological storage in a larger scale.</p></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"10 5","pages":"Pages 466-475"},"PeriodicalIF":3.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71761115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical simulation of oil and gas pipeline corrosion based on single- or coupled-factor modeling: A critical review","authors":"Chengtao Wang ,&nbsp;Mostafa Fahmi Hassanein ,&nbsp;Mengmeng Li","doi":"10.1016/j.ngib.2023.08.001","DOIUrl":"10.1016/j.ngib.2023.08.001","url":null,"abstract":"<div><p>Numerical simulation is an effective research approach to assess the condition and predict the remaining service life of process pipelines suffering corrosion hazards. This work comprises a critical review of 182 academic articles to analyze environmental factors affecting the pipeline corrosion process, basic numerical methods for corrosion simulation, and single- and coupled-factor numerical investigations. Numerical simulation of corroded pipelines could combine the electrochemical corrosion processes and structural characteristics of pipelines to obtain more accurate results. Multiphysics-based techniques have been successfully applied to simulate the evolution process of corroded pipelines affected by two or more coupled factors under stray current interference. Through integration with learning-based algorithms, predictive studies are conducted to assess the development of corrosion. The challenge for current research is that the remaining types of corrosion are difficult to describe by numerical methods. Opportunities are proposed to improve the pipeline corrosion simulation model to describe more corrosion types and realistic corrosion morphologies, including time-varying corrosion simulation, random field in the simulation, and microelectrochemical corrosion simulation.</p></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"10 5","pages":"Pages 445-465"},"PeriodicalIF":3.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47933685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal‒hydraulic‒mechanical‒chemical coupling analysis of enhanced geothermal systems based on an embedded discrete fracture model","authors":"Dongxu Han ,&nbsp;Weitao Zhang ,&nbsp;Kaituo Jiao ,&nbsp;Bo Yu ,&nbsp;Tingyu Li ,&nbsp;Liang Gong ,&nbsp;Shurong Wang","doi":"10.1016/j.ngib.2023.10.001","DOIUrl":"https://doi.org/10.1016/j.ngib.2023.10.001","url":null,"abstract":"<div><p>Enhanced geothermal system (EGS) is subject to the comprehensive effects of multiple physical fields during the long-term heat extraction process, including hydraulic (H), thermal (T), mechanical (M) and chemical (C) fields. The embedded discrete fracture model (EDFM) can effectively simulate the variations of flow, temperature, mechanical and concentration fields in fractured reservoirs. At present, however, the thermo-hydro-mechanical-chemical (THMC) coupling model based on EDFM is less researched. In this paper, the THMC coupling model of fractured reservoir is established based on EDFM by considering the changes in reservoir heterogeneity and physical properties as well as water–rock reactions. Then, the spatiotemporal evolution of flow, temperature, displacement and concentration fields in the operation process of EGS is simulated and analyzed. And the following research results are obtained. First, when the permeability of the basement rock is low, the production temperature decrease during exploitation is gradual, allowing EGS to maintain a high exploitation temperature for an extended period. However, lower permeability may result in a decrease in the quality flow rate from production wells, thereby affecting net heat extraction power. Second, when fracture permeability or fracture opening changes, EGS can output higher temperature stably for a certain period and then the temperature decreases at different amplitudes. When the fracture permeability increases to a certain value or the fracture opening decreases to a certain value, the influence of the change in fracture parameters on production temperature gets weak. Third, After 40 years of EGS operation, considering variable property fluids results in a 22 °C lower exploitation temperature compared to using constant property fluids, and considering water–rock reactions results in a 15 °C lower exploitation temperature, with a 12.5 % increase in reservoir average porosity. In conclusion, when researching a long-term operating EGS, it is necessary to comprehensively consider the influences of reservoir rock parameters, physical properties of injected fluid, water–rock reaction and other factors. And in the future, attention shall be paid to the two-way coupling of chemical reaction and mechanical deformation of other mineral compositions in the reservoir to the hydro-thermo-chemical field influence, so as to provide more accurate and reliable prediction for the engineering development and utilization of EGS reservoirs.</p></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"10 5","pages":"Pages 533-546"},"PeriodicalIF":3.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71761122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study on the acoustic wave propagation characteristics of bedding shales under changes in temperature and pressure","authors":"Jianfei Ren,&nbsp;Xiangjun Liu,&nbsp;Jian Xiong,&nbsp;Yuchen Cai,&nbsp;Xiaolong Yu,&nbsp;Lianlang Hou","doi":"10.1016/j.ngib.2023.09.002","DOIUrl":"https://doi.org/10.1016/j.ngib.2023.09.002","url":null,"abstract":"<div><p>To determine the acoustic wave propagation characteristics of bedded shales under different confining pressures and temperatures, shales from the Longmaxi Formation in the Sichuan Basin are taken as research objects. Based on ultrasonic experiments, the acoustic wave propagation properties of shales with different bedding angles are investigated. The effects of the confining pressure, temperature, and bedding angle on the acoustic velocity, attenuation coefficient, and acoustic anisotropy coefficient are analyzed. Based on the results, an acoustic velocity prediction model for bedded shales considering the confining pressure, temperature, and bedding angle is established. The experiments show that, for confining pressures from 0 to 50 MPa and temperatures from 20 to 100 °C, the acoustic velocity of the shales increases with increasing confining pressure and decreases with increasing temperature and bedding angle. The attenuation coefficient of the shales exhibits a decreasing trend with increasing confining pressure, but increases with increasing temperature and bedding angle. The acoustic anisotropy coefficient of shale gradually decreases with increasing confining pressure, but increases with increasing temperature and bedding angle. The acoustic velocity prediction model for in-situ bedded shales established in this study has a high level of accuracy. The relationship between the acoustic anisotropy coefficient and the bedding angle is satisfied by a binomial equation. The relationship between the acoustic anisotropy coefficient and the confining pressure and temperature follows a binary linear logarithmic equation.</p></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"10 5","pages":"Pages 407-418"},"PeriodicalIF":3.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71761111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"China's CO2 pipeline development strategy under carbon neutrality","authors":"Weihe Huang ,&nbsp;Yuxing Li ,&nbsp;Pengchao Chen","doi":"10.1016/j.ngib.2023.09.008","DOIUrl":"https://doi.org/10.1016/j.ngib.2023.09.008","url":null,"abstract":"<div><p>Under China's goal of carbon neutrality, there is a huge demand for carbon dioxide (CO₂) capture, utilization, and storage technology (CCUS). CO₂ transport, as a crucial link in the CCUS industrial chain, will inevitably rely on the construction of long-distance CO₂ pipelines and infrastructure. Due to the late start and small scale of China's CO₂ pipeline construction, and the relative lag in related technologies and policies, it is urgent to make systematical planning and achieve relevant technological breakthroughs for the future construction of CO₂ pipeline network as a public infrastructure. Therefore, a three-stage pipeline development path is proposed based on the analysis of the spatial distribution characteristics and the temporal pattern of large-scale commercial development of CO₂ carbon sources and storage in China. Moreover, solutions and suggestions are proposed upon the developments analysis in China from the perspectives of pipeline transportation technology, safety evaluation, materials and equipment, and integrity. The results show that the construction of CO₂ pipeline network as an important CCUS infrastructure will accelerate with the development of the global CCUS industry; the spatial distribution of CO₂ emission sources and storage is unbalanced in China, with 65.8% from the eastern and central China, and CO₂ flooding and geological storage contributing to most of large-scale CO₂ pipeline transportation. The conclusions are as follows. First, the three-stage development path is a million-ton demonstration project of supercritical CO₂ transmission pipeline before China peaks carbon emissions. After the achievement of carbon peak, a 10 million-ton regional network architecture of CO₂ pipeline network centered on basins will be built, and trunk pipelines between regions will be formed before achieving carbon neutrality, establishing the national carbon transmission network with a transportation capacity of 10 × 10⁸ ton, and a total mileage of approximately 6 × 10⁴ km. Second, we should carry out research on the technology and equipment for the full phase CO₂ pipeline transportation onshore and offshore, improve the domestic pipeline transportation technology, and promote the continuous improvement of the regulatory system in the pipeline transportation industry, so as to facilitate the implementation of demonstration projects.</p></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"10 5","pages":"Pages 502-510"},"PeriodicalIF":3.3,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71761098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}