Natural Gas Industry B最新文献

{"title":"Seismic fault identification of deep fault-karst carbonate reservoir using transfer learning","authors":"Hanqing Wang ,&nbsp;Han Wang ,&nbsp;Kunyan Liu ,&nbsp;Jin Meng ,&nbsp;Yitian Xiao ,&nbsp;Yanghua Wang","doi":"10.1016/j.ngib.2025.03.006","DOIUrl":"10.1016/j.ngib.2025.03.006","url":null,"abstract":"<div><div>Seismic fault identification is a critical step in structural interpretation, reservoir characterization, and well-drilling planning. However, fault identification in deep fault-karst carbonate formations is particularly challenging due to their deep burial depth and the complex effects of dissolution. Traditional manual interpretation methods are often labor intensive and prone to high uncertainty due to their subjective nature. To address these limitations, this study proposes a transfer learning–based strategy for fault identification in deep fault-karst carbonate formations. The proposed methodology began with the generation of a large volume of synthetic seismic samples based on statistical fault distribution patterns observed in the study area. These synthetic samples were used to pretrain an improved U-Net network architecture, enhanced with an attention mechanism, to create a robust pretrained model. Subsequently, real-world fault labels were manually annotated based on verified fault interpretations and integrated into the training dataset. This combination of synthetic and real-world data was used to fine-tune the pretrained model, significantly improving its fault interpretation accuracy. The experimental results demonstrate that the integration of synthetic and real-world samples effectively enhances the quality of the training dataset. Furthermore, the proposed transfer learning strategy significantly improves fault recognition accuracy. By replacing the traditional weighted cross-entropy loss function with the Dice loss function, the model successfully addresses the issue of extreme class imbalance between positive and negative samples. Practical applications confirm that the proposed transfer learning strategy can accurately identify fault structures in deep fault-karst carbonate formations, providing a novel and effective technical approach for fault interpretation in such complex geological settings.</div></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"12 2","pages":"Pages 174-185"},"PeriodicalIF":4.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886568","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":"Super-resolution for electron microscope scanning images of shale via spatial-spectral domain attention network","authors":"Junqi Chen ,&nbsp;Lijuan Jia ,&nbsp;Jinchuan Zhang ,&nbsp;Yilong Feng","doi":"10.1016/j.ngib.2025.03.010","DOIUrl":"10.1016/j.ngib.2025.03.010","url":null,"abstract":"<div><div>The evaluation of adsorption states and shale gas content in shale fractures and pores relies on the analysis of these fractures and pores. Scanning electron microscopy images are commonly used for shale analysis; however, their low resolution, particularly the loss of high-frequency information at pore edges, presents challenges in analyzing fractures and pores in shale gas reservoirs. This study introduced a novel neural network called the spatial-spectral domain attention network (SSDAN), which employed spatial and spectral domain attention mechanisms to extract features and restore information in parallel. The network generated super-resolution images through a fusion module that included CNN-based spatial blocks for pixel-level image information recovery, spectral blocks to process Fourier transform information of images and enhance high-frequency recovery, and an adaptive vision transformer to process Fourier transform block information, eliminating the need for a preset image size. The SSDAN model demonstrated exceptional performance in comparative experiments on marine shale and marine continental shale datasets, achieving optimal performance on key indicators such as peak signal-to-noise ratio, structural similarity, learned perceptual image patch similarity, and Frechet inception distance while also exhibiting superior visual performance in pore recovery. Ablation experiments further confirmed the effectiveness of the spatial blocks, channel attention, spectral blocks, and frequency loss function in the model. The SSDAN model showed remarkable capability in enhancing the resolution of shale gas reservoir images and restoring high-frequency information at pore edges, thereby validating its effectiveness in unconventional natural gas reservoir analyses.</div></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"12 2","pages":"Pages 147-157"},"PeriodicalIF":4.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886566","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":"Dynamic simulation optimization of the hydrogen liquefaction process","authors":"Juntao Fu ,&nbsp;Jiahao Tang ,&nbsp;Jianlu Zhu ,&nbsp;Guocong Wang ,&nbsp;Yuxing Li ,&nbsp;Hui Han","doi":"10.1016/j.ngib.2025.01.002","DOIUrl":"10.1016/j.ngib.2025.01.002","url":null,"abstract":"<div><div>Liquid hydrogen has attracted much attention due to its high energy storage density and suitability for long-distance transportation. An efficient hydrogen liquefaction process is the key to obtaining liquid hydrogen. In an effort to determine the parameter optimization of the hydrogen liquefaction process, this paper employed process simulation software Aspen HYSYS to simulate the hydrogen liquefaction process. By establishing a dynamic model of the unit module, this study carried out dynamic simulation optimization based on the steady-state process and process parameters of the hydrogen liquefaction process and analyzed the dynamic characteristics of the process. Based on the pressure drop characteristic experiment, an equation for the pressure drop in the heat exchanger was proposed. The heat transfer of hydrogen conversion was simulated and analyzed, and its accuracy was verified by comparison with the literature. The dynamic simulation of a plate-fin heat exchanger was carried out by coupling heat transfer simulation and the pressure drop experiment. The results show that the increase in inlet temperature (5 °C and 10 °C) leads to an increase in specific energy consumption (0.65 % and 1.29 %, respectively) and a decrease in hydrogen liquefaction rate (0.63 % and 2.88 %, respectively). When the inlet pressure decreases by 28.57 %, the hydrogen temperature of the whole liquefaction process decreases and the specific energy consumption increases by 52.94 %. The research results are of great significance for improving the operating efficiency of the refrigeration cycle and guiding the actual liquid hydrogen production.</div></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"12 1","pages":"Pages 16-25"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510318","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":"The hydrocarbon generation potential of the mudstone source rock in the Jurassic Shuixigou Group, the Turpan-Hami Basin, and indicative significance for oil and gas exploration","authors":"Tong Lin ,&nbsp;Kangle Wang ,&nbsp;Haidong Wang ,&nbsp;Runze Yang ,&nbsp;Pan Li ,&nbsp;Long Su","doi":"10.1016/j.ngib.2025.01.006","DOIUrl":"10.1016/j.ngib.2025.01.006","url":null,"abstract":"<div><div>The coal-bearing source rocks in the Jurassic Shuixigou Group have received widespread attention as the primary source rocks in the Turpan-Hami Basin of China, but the hydrocarbon generation potential and process of the mudstone in the Shuixigou Group, especially the mudstone at the top of the Sangonghe Formation, are unclear. Taking the source rocks of the Xishanyao Formation and the Sangonghe Formation as objectives, this study conducted rock pyrolysis and gold tube simulation experiment to investigate their hydrocarbon generation characteristics and differences. Our results indicate that the source rocks of the Xishanyao Formation include mudstone, carbonaceous mudstone and coal, and the quality of the source rocks is highly heterogeneous; the source rocks of the Sangonghe Formation are mainly composed of mudstone, and it is a good gas source rock. Simulation experiments found that the activation energy required for the generation of gaseous hydrocarbons by the mudstone of the Sangonghe Formation is lower than that by the mudstone of the Xishanyao Formation. The hydrocarbon generation process can be divided into three stages for both formations, but the gas generation potential of the Xishanyao Formation mudstone is higher than that of the Sangonghe Formation mudstone. A large amount of hydrocarbon was generated by the mudstone of the Xishanyao Formation when entering late thermal evolution, of which methane is dominant, mainly from the demethylation reaction of mature kerogen. On the other hand, a large amount of hydrocarbon was generated by the mudstone of the Sangonghe Formation in the early stage of thermal evolution, of which light hydrocarbon and wet gas are dominant, mainly from the early cracking stage of kerogen. This difference may be attributed to the structure of kerogen. The mudstone of the Xishanyao Formation is conducive to the formation of highly mature dry gas reservoirs, while the mudstone of the Sangonghe Formation is conducive to the formation of low maturity condensate gas and volatile oil reservoirs. The research result provides a scientific basis for the comparison of oil and gas sources and the evaluation of oil and gas resources in the Turpan-Hami Basin.</div></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"12 1","pages":"Pages 50-63"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510325","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":"Paleoenvironmental factors controlling the development of the lacustrine shale interbed in the Jurassic Dongyuemiao Member of the Sichuan Basin, China","authors":"Xiangfeng Wei ,&nbsp;Qingqiu Huang ,&nbsp;Jingyu Hao ,&nbsp;Zhujiang Liu ,&nbsp;Qiang Wang ,&nbsp;Qingbo Wang ,&nbsp;Daojun Wang ,&nbsp;Jilin Xiao","doi":"10.1016/j.ngib.2025.02.002","DOIUrl":"10.1016/j.ngib.2025.02.002","url":null,"abstract":"<div><div>Dongyuemiao Member shale in the Sichuan Basin, China, is characterized by organic-rich shale intervals with different types of interbeds and accumulation modes. The aim of this study is to elucidate the impact of paleoenvironmental indicators on interbed development. With this aim in mind, we established an interbed classification scheme and quantified the development of different types of interbeds and their frequencies. We categorized the shale interbeds into three types based on interbed type: silt interbeds (SIs), shell fragment interbeds (SFIs), and shell skeleton interbeds (SSIs). The SIs, SFIs, and SSIs are respectively the products of extrabasinal low-density turbidity currents, intrabasinal debris flow, and intrabasinal low-density turbidity currents. We propose that variations in paleoenvironmental conditions primarily influenced the types of interbeds that developed but had minimal impact on the frequency of their development. Models depicting the interbed development within the 1st Submember of Dongyuemiao Member indicate that during the early Dongyuemiao depositional period, under conditions of relatively aridity, weak weathering, high terrigenous input, and strong hydrodynamic activity, SSIs were well developed. In the middle depositional period, as the climate gradually transitioned to more humid conditions, and the weathering intensity and amount of terrestrial input increased, the development of SIs and SFIs significantly increased. During the late depositional period, with a continuous decrease in terrestrial inputs and sedimentation rates, the development of SIs decreased while that of SSIs increased.</div></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"12 1","pages":"Pages 88-100"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510375","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":"3D mechanical modeling and analysis of influencing factors on fracture breakdown pressure in dual horizontal well intensive hydraulic fracturing","authors":"Wan Cheng ,&nbsp;Zuncha Wang ,&nbsp;Gang Lei ,&nbsp;Qinghai Hu ,&nbsp;Yuzhao Shi ,&nbsp;Siyu Yang","doi":"10.1016/j.ngib.2025.01.001","DOIUrl":"10.1016/j.ngib.2025.01.001","url":null,"abstract":"<div><div>Horizontal well intensive fracturing is a critical technology used to stimulate unconventional oil and gas reservoirs. Accurate prediction of wellbore breakdown pressure is conducive to optimal fracturing design and improvement of the reservoir stimulation effect. In this work, the three-dimensional displacement discontinuity method (DDM) is used to characterize fracture deformation and fracture closure after the pumping pressure relief. The influences of key parameters such as the minimum horizontal principal stress, fracture spacing, the Young's modulus, the Poisson's ratio and pumping pressure on the breakdown pressure are analyzed. The results show that, assuming that the fracture half-length is <em>a</em>, the breakdown pressure outside the fracture surface area increases significantly within 2<em>a</em> in the direction of the minimum horizontal principal stress and <em>a</em> in the directions of the vertical stress and maximum horizontal principal stress before pressure relief. The breakdown pressure of the modified zipper-type fracturing in the later stage is lower. When the fracture spacing is small, the fracture breakdown pressure decreases after the modified zipper-type fracturing of two horizontal wells. The fracture breakdown pressure of the first fractured well reaches a maximum when the fracture spacing is a – 1.5a, and the breakdown pressure decreases with increasing well spacing.</div></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"12 1","pages":"Pages 1-15"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510584","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":"A method for optimizing and controlling rocking drillstring–assisted slide drilling","authors":"Yabin Zhang ,&nbsp;Jian Lu ,&nbsp;Binfeng Guo ,&nbsp;Xueying Wang ,&nbsp;Feifei Zhang","doi":"10.1016/j.ngib.2025.02.003","DOIUrl":"10.1016/j.ngib.2025.02.003","url":null,"abstract":"<div><div>Rocking the drillstring at the surface during slide drilling is a common method for reducing drag when drilling horizontal wells. However, the current methods for determining the parameters for rocking are insufficient, limiting the widespread use of this technology. In this study, the influence of rocking parameters on the friction-reduction effect was investigated using an axial–torsional dynamic model of the drillstring and an experimental apparatus for rocking-assisted slide drilling in a simulated horizontal well. The research shows that increasing the rocking speed is beneficial improving the friction-reduction effect, but there is a diminishing marginal effect. A method was proposed to optimize the rocking speed using the equivalent axial drag coefficient–rocking speed curve. Under the influence of rocking, the downhole weight on bit (WOB) exhibits a sinusoidal-like variation, with the predominant frequency being twice the rocking frequency. The fluctuation amplitude of the WOB in the horizontal section has a linear relationship with the rocking-affected depth. Based on this, a method was proposed to estimate the rocking-affected depth using the fluctuation amplitude of the standpipe pressure difference. Application of this method in the drilling field has improved the rate of penetration and toolface stability, demonstrating the reliability and effectiveness of the methods proposed in this paper.</div></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"12 1","pages":"Pages 77-87"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510365","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":"Relationship between potentiometric surface and abnormally low pressure in the Yanchang Formation, Zhenjing area, Ordos Basin, China","authors":"Chao Li ,&nbsp;Huixi Lin ,&nbsp;Yukai Qi ,&nbsp;Likuan Zhang ,&nbsp;Lan Yu ,&nbsp;Yuhong Lei ,&nbsp;Guiqiang Qiu ,&nbsp;Liyuan Ma ,&nbsp;Hanwen Hu","doi":"10.1016/j.ngib.2025.01.004","DOIUrl":"10.1016/j.ngib.2025.01.004","url":null,"abstract":"<div><div>Abnormally low pressure commonly develops in petroliferous basins. It is closely associated with hydrocarbon distribution and can hinder safe drilling operations. Potentiometric surface is one of the causes of abnormally low pressure, but the relationship between such surface and abnormal pressure has not attracted much research attention. In this paper, a method is proposed for quantifying the potentiometric surface of the tight oil reservoir of the Upper Triassic Yanchang Formation in the Zhenjing area, southern Ordos Basin, China. This method involves screening pressure data that reflect real pore pressure conditions underground and analyzing the formation sealing conditions in the reservoir based on fracture development and the chemical characteristics of the formation water. The relationship between the potentiometric surface and the abnormally low pressure observed in the study area is discussed. The results show that the pressure coefficient of the Yanchang Formation in the Zhenjing area is 0.85–1.02, with an average of 0.93, indicating a state between abnormally low pressure and normal pressure. The Yanchang Formation has complex sealing conditions, with favorable overall sealing and a locally open hydrodynamic environment controlled by sand body connectivity and fault activity. We proposed a method to calculate the potentiometric surface using the measured pressure data with a pressure coefficient close to 1. The potentiometric surface is 1040–1200 m, with a high value in the northwest and a low value in the southeast, and it is 0–350 m below the ground level. The pressure coefficient was calibrated with an average of 1, with the potentiometric surface used as the starting point, indicating that the low pressure coefficient may be caused by the potentiometric surface below the ground level. The results have theoretical implications for the analysis of formation pressure characteristics in areas or basins with comparable geological conditions, and practical implications for the analysis and development of oil and gas.</div></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"12 1","pages":"Pages 37-49"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510320","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":"Advances on research of H2S removal by deep eutectic solvents as green solvent","authors":"Feng Gao ,&nbsp;Jinjin Li ,&nbsp;Chaoyue Yang ,&nbsp;Wu Zhang ,&nbsp;Hongfa Huang ,&nbsp;Zicheng Peng ,&nbsp;Teng Gong","doi":"10.1016/j.ngib.2025.01.003","DOIUrl":"10.1016/j.ngib.2025.01.003","url":null,"abstract":"<div><div>H₂S in natural gas and other industrial gas is seriously harmful to human health, environmental protection and the downstream industries. Efficient purification of H₂S containing gas is the basic process in the chemical industry. Benefiting from multiple advantages, deep eutectic solvents (DES) can be used as tailor-made green solvents, and have been booming in the fields of harmful gas removal and fuel oil desulfurization. Furthermore, significant scientific research of DES in desulfurization and purification of natural gas has accelerated the process of its practical application. This paper systematically summarizes and analyzes the removal mechanism, impact factors and challenges of DES as emerging green solvent in H₂S absorption and conversion. Strategies on H₂S removal by DES generally fall into two categories: physical absorption and chemical conversion. Although the chemical conversion of H₂S by DES has been less studied compared with the physical absorption, it presents great application potential. At present, the research on H₂S removal by DES is still in the initial stage. Therefore, it is necessary to further study the mechanism of H₂S removal and construct the relationship between structural properties and desulfurization performance of DES, thereby to solve the issues of sulfur blockage and low quality of sulfur paste which is suffered by conventional liquid redox desulfurization solvent system. Additionally, the methods for efficient solvent regeneration and recycling remain to be explored out to promote the practical application of iron-based DES in the field of gas desulfurization.</div></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"12 1","pages":"Pages 26-36"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510319","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":"Technology of milling bridge plugs and field applications in shale gas horizontal wells with severe casing deformation","authors":"Gang Xiang,&nbsp;Jialin Liu,&nbsp;Xiaolong Ma","doi":"10.1016/j.ngib.2025.01.005","DOIUrl":"10.1016/j.ngib.2025.01.005","url":null,"abstract":"<div><div>Milling bridge plugs in shale gas wells with severe casing deformation often leads to the accumulation of cuttings, increasing the risk of stuck drill bits. Friction in the wellbore further complicates tool deployment into the horizontal section, posing challenges to efficient plug drilling and achieving wellbore access to the target layer. This paper integrates the theory of positive displacement motors and models their actual working characteristics to study the milling of bridge plugs in severely deformed horizontal wells. It examines the effects of coiled tubing diameter and wall thickness on the bending load of horizontal sections and discusses key technical requirements, including the timing of plug drilling, extending the run in the horizontal section, parameter control, and real-time field analysis. Field practices have shown that after casing deformation occurs, priority should be given to drilling out the bridge plugs below the point of deformation. The primary factors contributing to stuck drills in deformed wells include smaller mill shoe sizes and larger cuttings sizes. Short well-washing cycles and targeted cuttings removal can effectively reduce sticking risks. If sticking occurs, high-tonnage pulling should be avoided. Instead, releasing the stick through up-and-down string motion, combined with high-volume nozzle spraying and annulus pumping, is recommended. The selection of coiled tubing should consider diameter, wall thickness, and steel grade to handle complex situations. Larger diameters, thicker walls, and low-frequency, multi-head hydraulic oscillators are more effective for unlocking horizontal sections. This approach can reduce the risk of drill sticking and solve the problem of horizontal section lock-ups, offering a reliable solution for smooth drilling and efficient production in wells with severe casing deformation.</div></div>","PeriodicalId":37116,"journal":{"name":"Natural Gas Industry B","volume":"12 1","pages":"Pages 64-70"},"PeriodicalIF":4.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510326","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}