Article(id=1322942260375060992, tenantId=1146029695717560320, journalId=1322258508890079423, issueId=1322942002035295141, articleNumber=null, orderNo=null, doi=10.13809/j.cnki.cn32-1825/te.20250032, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1773676800000, receivedDateStr=2026-03-17, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343613951, onlineDateStr=2026-10-30, pubDate=1790352000000, pubDateStr=2026-09-26, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343613951, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343613951, creator=13701087609, updateTime=1793343613951, updator=13701087609, issue=Issue{id=1322942002035295141, tenantId=1146029695717560320, journalId=1322258508890079423, year='2026', volume='16', issue='5', pageStart='949', pageEnd='1136', issueExtLink='null', onlineDate='null', pubDate='1790352000000', pubDateStr='2026-09-26', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343552359, creator='13701087609', updateTime=1793344212649, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322944771945267389, tenantId=1146029695717560320, journalId=1322258508890079423, issueId=1322942002035295141, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322944771945267390, tenantId=1146029695717560320, journalId=1322258508890079423, issueId=1322942002035295141, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=992, endPage=1004, ext={EN=ArticleExt(id=1322942260907737603, articleId=1322942260375060992, tenantId=1146029695717560320, journalId=1322258508890079423, language=EN, title=Molecular simulation study on adsorption and desorption behavior of methane in low-rank coal from Fukang, Xinjiang, columnId=1322941494130258079, journalTitle=Petroleum Reservoir Evaluation and Development, columnName=Oil and Gas Exploration, runingTitle=null, highlight=
The development of coalbed methane (CBM) from low-rank coal in the Fukang block, Xinjiang, has entered a bottleneck stage. A large amount of adsorbed methane in the microscopic pores of low-rank coal has low desorption efficiency, and the adsorption and desorption mechanisms remain unclear, resulting in low initial production rates, short durations of stable production, and poor development performance in newly commissioned CBM wells. To address the challenges of low CBM recovery rates and the difficulty in effectively mobilizing adsorbed methane, low-rank coal from the Fukang block, Xinjiang, was selected as the study subject. The coal’s pore size distribution, molecular formula (C100H108O16N3), and molecular structure were characterized using elemental analysis, N2 adsorption, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and 13C-nuclear magnetic resonance (13C-NMR), and a slit-type pore model was constructed. Adsorption behavior under varying slit widths, pressures, and temperatures was simulated using the grand canonical Monte Carlo (GCMC) method, and the non-isothermal Langmuir adsorption isotherm for low-rank coal in the Fukang block was fitted. Subsequently, under the conditions of 10.0 MPa and 308 K, molecular dynamics simulations of isothermal depressurization desorption processes were conducted for slit coal-methane adsorption configurations with different apertures. The results showed that: (1) The dominant molecular architecture of Fukang low-rank coal was a chain-like structure composed of benzene and naphthalene rings connected by aliphatic carbon chains, and contained functional groups such as carboxyl, hydroxyl, and pyrrole groups. (2) At pore aperture below 2 nm, strong nano-confinement effect deepened the adsorption potential well, leading to a single-peak methane density distribution, with micropore filling as the primary methane storage mechanism. When the aperture was above 2 nm, the density distribution transitioned to a double-peak pattern accompanied by a non-adsorption zone, indicating a shift toward surface-dominated adsorption. (3) Under high-pressure conditions, elevated temperature reduced adsorption potential energy and provided kinetic energy for methane desorption, and this effect was more pronounced in slit pores with apertures above 2 nm. Adsorbed methane still existed in the center of the slit, and the adsorption was jointly dominated by micropore filling and surface adsorption. (4) In the slit with an aperture of 1 nm, high desorption energy barriers and low diffusion coefficients (7.5×10-10 m2/s) led to significant desorption hysteresis. In the slit with an aperture of 3 nm, the desorption energy barrier was low, the diffusion coefficient was relatively high (64.7×10-10 m2/s), and no obvious desorption hysteresis occurred. In conclusion, reducing the adsorption/desorption energy barrier in low-rank coal micropores is crucial to enhancing methane desorption efficiency and diffusion capacity. Through the coordinated regulation of depressurization, pore expansion, and temperature increase, the combined fracturing technology of pre-injected CO2 and self-heating fracturing fluids, together with well-pattern thermal fluid displacement, represents an important technical direction for improving recovery rates of low-rank CBM reservoirs in the Fukang, Xinjiang.
, articleAbstract=null, authors=TAO ZHANG1
, 2, JIANCHUN GUO1
, 2, ZHIHONG ZHAO1
, 2, JIE ZENG1
, 2, TIANBIN LIAO3, HENG ZHANG3, authorsList=TAO ZHANG, JIANCHUN GUO, ZHIHONG ZHAO, JIE ZENG, TIANBIN LIAO, HENG ZHANG, authorCompany=null, correspAuthors=JIANCHUN GUO, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322942278024692292, articleId=1322942260375060992, tenantId=1146029695717560320, journalId=1322258508890079423, language=CN, title=基于分子模拟的新疆阜康低阶煤甲烷吸附-解吸规律研究, columnId=1322941494327390371, journalTitle=油气藏评价与开发, columnName=油气勘探, runingTitle=null, highlight=
新疆阜康区块低阶煤煤层气开发进入瓶颈期,低阶煤微观孔隙中大量吸附态甲烷解吸效率低,且吸附-解吸机理尚不明确,导致新投产煤层气井初期产量低、稳产时间短、开发效果差。为解决煤层气采收程度低、吸附态甲烷难以有效动用等问题,本文以新疆阜康区块低阶煤为研究对象,采用元素分析、氮气吸附法、X射线衍射、傅里叶变换红外光谱和13C核磁共振手段,表征了低阶煤的孔径分布、分子式(C100H108O16N3)及其分子结构,并构建了狭缝型孔隙模型。采用巨正则蒙特卡洛方法(GCMC)模拟了不同孔隙开度、压力和温度条件下甲烷的吸附规律,拟合得到阜康区块低阶煤的非等温朗格缪尔(Langmuir)吸附方程。并在10.0 MPa、308 K条件下,针对不同开度的狭缝煤-甲烷吸附构型开展定温降压解吸分子动力学模拟。研究结果表明:①阜康低阶煤主体分子结构为脂肪族碳链连接苯环、萘环构成的链状结构,同时含有羧基、羟基和吡咯等官能团。②孔隙开度小于2 nm时,强纳米限域效应导致吸附势阱加深,甲烷密度呈单峰分布,赋存以微孔填充为主导;开度大于2 nm后,密度分布转为双峰分布并出现非吸附相区,吸附机制转变为表面吸附主导。③高压条件下,升温可降低吸附势能,为甲烷解吸提供动能,此效应在开度大于2 nm的狭缝孔隙中更为显著。狭缝中心仍存在吸附态甲烷,吸附由微孔填充和表面吸附共同主导。④1 nm开度的狭缝内解吸能垒高、扩散系数低(7.5×10⁻10 m2/s),解吸滞后现象显著;3 nm开度的狭缝内解吸能垒低、扩散系数相对高(64.7×10⁻10 m2/s),未出现明显解吸滞后。结论认为:降低低阶煤微孔中的吸附-解吸能垒是提高甲烷解吸效率和扩散能力的关键。通过降压-扩孔-升温的协同调控,采用前置CO2+自生热压裂液组合压裂工艺,并配合井网热流体驱替,是提高新疆阜康低阶煤煤层气藏采收率的重要技术方向。
, articleAbstract=null, authors=张涛1
, 2, 郭建春1
, 2, 赵志红1
, 2, 曾杰1
, 2, 廖天彬3, 张恒3, authorsList=张涛, 郭建春, 赵志红, 曾杰, 廖天彬, 张恒, authorCompany=null, correspAuthors=郭建春, authorNote=
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1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
2 Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322942283410178651, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, authorId=1322942282554540627, language=CN, stringName=张涛, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1
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1 西南石油大学油气藏地质及开发工程全国重点实验室,四川 成都 610500
2 西南石油大学石油与天然气工程学院,四川 成都 610500, bio={"content":"
张涛(1998—),男,在读博士研究生,主要从事煤层(岩)气渗流数值模拟研究与应用。地址:四川省成都市新都区新都大道8号,邮政编码: 610500。E-mail: zhangtao100610@163.com
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张涛(1998—),男,在读博士研究生,主要从事煤层(岩)气渗流数值模拟研究与应用。地址:四川省成都市新都区新都大道8号,邮政编码: 610500。E-mail: zhangtao100610@163.com
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1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China), AuthorCompanyExt(id=1322942279639499338, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942279337509448, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 西南石油大学油气藏地质及开发工程全国重点实验室,四川 成都 610500)]), AuthorCompany(id=1322942280901984843, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, xref=2, ext=[AuthorCompanyExt(id=1322942280927150668, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942280901984843, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China), AuthorCompanyExt(id=1322942280956510797, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942280901984843, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 西南石油大学石油与天然气工程学院,四川 成都 610500)])]), Author(id=1322942283485676125, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1322942285511524963, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, authorId=1322942283485676125, language=EN, stringName=JIANCHUN GUO, firstName=JIANCHUN, middleName=null, lastName=GUO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1
, 2, address=
1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
2 Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322942285582828132, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, authorId=1322942283485676125, language=CN, stringName=郭建春, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1
, 2, address=
1 西南石油大学油气藏地质及开发工程全国重点实验室,四川 成都 610500
2 西南石油大学石油与天然气工程学院,四川 成都 610500, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322942279337509448, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, xref=1, ext=[AuthorCompanyExt(id=1322942279618527817, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942279337509448, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China), AuthorCompanyExt(id=1322942279639499338, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942279337509448, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 西南石油大学油气藏地质及开发工程全国重点实验室,四川 成都 610500)]), AuthorCompany(id=1322942280901984843, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, xref=2, ext=[AuthorCompanyExt(id=1322942280927150668, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942280901984843, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China), AuthorCompanyExt(id=1322942280956510797, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942280901984843, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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, 2, address=
1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
2 Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322942286874673771, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, authorId=1322942285658325606, language=CN, stringName=赵志红, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1
, 2, address=
1 西南石油大学油气藏地质及开发工程全国重点实验室,四川 成都 610500
2 西南石油大学石油与天然气工程学院,四川 成都 610500, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322942279337509448, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, xref=1, ext=[AuthorCompanyExt(id=1322942279618527817, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942279337509448, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1 西南石油大学油气藏地质及开发工程全国重点实验室,四川 成都 610500)]), AuthorCompany(id=1322942280901984843, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, xref=2, ext=[AuthorCompanyExt(id=1322942280927150668, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942280901984843, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China), AuthorCompanyExt(id=1322942280956510797, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942280901984843, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 西南石油大学石油与天然气工程学院,四川 成都 610500)])]), Author(id=1322942287587705454, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322942288040690290, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, authorId=1322942287587705454, language=EN, stringName=JIE ZENG, firstName=JIE, middleName=null, lastName=ZENG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1
, 2, address=
1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
2 Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322942289735189109, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, authorId=1322942287587705454, language=CN, stringName=曾杰, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=1
, 2, address=
1 西南石油大学油气藏地质及开发工程全国重点实验室,四川 成都 610500
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1 西南石油大学油气藏地质及开发工程全国重点实验室,四川 成都 610500)]), AuthorCompany(id=1322942280901984843, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, xref=2, ext=[AuthorCompanyExt(id=1322942280927150668, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942280901984843, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China), AuthorCompanyExt(id=1322942280956510797, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942280901984843, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 西南石油大学石油与天然气工程学院,四川 成都 610500)]), AuthorCompany(id=1322942281711485519, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, xref=3, ext=[AuthorCompanyExt(id=1322942281745039952, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942281711485519, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 Xinjiang Yaxin Coalbed Methane Resource Technology Research Co., Ltd., Urumqi, Xinjiang 830063, China), AuthorCompanyExt(id=1322942281778594385, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, companyId=1322942281711485519, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 新疆亚新煤层气资源技术研究有限责任公司,新疆 乌鲁木齐 830063)])], figs=[ArticleFig(id=1322942299759575709, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig.1, caption=
Test results of proximate and elemental composition in Fukang low-rank coal of Xinjiang, figureFileSmall=WipW7a9ghgsfNabbN92KMQ==, figureFileBig=xhY8qhS039B+3+MZIfiDYg==, tableContent=null), ArticleFig(id=1322942300250309280, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图1, caption=
新疆阜康低阶煤工业组分和元素含量测试结果, figureFileSmall=WipW7a9ghgsfNabbN92KMQ==, figureFileBig=xhY8qhS039B+3+MZIfiDYg==, tableContent=null), ArticleFig(id=1322942302062248611, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig. 2, caption=
N2 adsorption and pore size distribution curves of Fukang low-rank coal in Xinjiang, figureFileSmall=0B2D8dablwrnhmvbdzWauw==, figureFileBig=QGI4gc+TOD1lLdN2ErR2+w==, tableContent=null), ArticleFig(id=1322942302372627109, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图2, caption=
新疆阜康低阶煤氮气吸附及孔径分布曲线注:p为实验体系内氮气的实际平衡压力,单位MPa;po为实验温度下氮气的饱和蒸汽压,单位MPa;p/po为相对压力。
, figureFileSmall=0B2D8dablwrnhmvbdzWauw==, figureFileBig=QGI4gc+TOD1lLdN2ErR2+w==, tableContent=null), ArticleFig(id=1322942303169544870, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig. 3, caption=
XRD peak fitting results of Fukang low-rank coal samples from Xinjiang, figureFileSmall=QIJmCuLC5KsB31R4Xbqi5A==, figureFileBig=WUicU0L3FQ6KpV2JacEonA==, tableContent=null), ArticleFig(id=1322942303547032232, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图3, caption=
新疆阜康低阶煤样品X射线衍射分峰拟合结果注:2θ为衍射角。
, figureFileSmall=QIJmCuLC5KsB31R4Xbqi5A==, figureFileBig=WUicU0L3FQ6KpV2JacEonA==, tableContent=null), ArticleFig(id=1322942303962268330, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig.4, caption=
FTIR spectroscopy results of Fukang low-rank coal in Xinjiang, figureFileSmall=4m0LQXt/HgsP31Gmvv72eg==, figureFileBig=YjJ+Sze1rMZKHlqHOchXXw==, tableContent=null), ArticleFig(id=1322942304373310126, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图4, caption=
新疆阜康低阶煤傅里叶变换红外光谱测试结果, figureFileSmall=4m0LQXt/HgsP31Gmvv72eg==, figureFileBig=YjJ+Sze1rMZKHlqHOchXXw==, tableContent=null), ArticleFig(id=1322942304457196207, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig.5, caption=
Test results of 13C-NMR for Fukang low-rank coal of Xinjiang, figureFileSmall=kDQ1jQabE0r5F5kupTGbwg==, figureFileBig=7DjwFH5eqINKYc4aU1qghQ==, tableContent=null), ArticleFig(id=1322942304880820913, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图5, caption=
新疆阜康低阶煤13C核磁共振测试结果, figureFileSmall=kDQ1jQabE0r5F5kupTGbwg==, figureFileBig=7DjwFH5eqINKYc4aU1qghQ==, tableContent=null), ArticleFig(id=1322942305300251317, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig. 6, caption=
Fitting results of 13C-NMR peaks for Fukang low-rank coal of Xinjiang, figureFileSmall=KZEzeeon8IIdR3TIt9hBjg==, figureFileBig=SxnaH62T8tqmqnLlyRKXkw==, tableContent=null), ArticleFig(id=1322942305627407030, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图6, caption=
新疆阜康低阶煤13C核磁共振分峰拟合结果, figureFileSmall=KZEzeeon8IIdR3TIt9hBjg==, figureFileBig=SxnaH62T8tqmqnLlyRKXkw==, tableContent=null), ArticleFig(id=1322942305732264631, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig.7, caption=
Molecular simulation and slit-type pore model of Fukang low-rank coal, Xinjiang, figureFileSmall=SGxlt4Tejv0CBPbRDcwy7Q==, figureFileBig=yUyw2gSmTaeu3n76kz8d/w==, tableContent=null), ArticleFig(id=1322942306055226041, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图7, caption=
新疆阜康低阶煤分子模拟及狭缝型孔隙模型, figureFileSmall=SGxlt4Tejv0CBPbRDcwy7Q==, figureFileBig=yUyw2gSmTaeu3n76kz8d/w==, tableContent=null), ArticleFig(id=1322942306139112123, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig. 8, caption=
Validation and comparative analysis results of molecular model for Fukang low-rank coal of Xinjiang, figureFileSmall=ITpZmmpfH57+3UGH9KbLnw==, figureFileBig=2tTdIv1dl23x1I2AbnBJ0w==, tableContent=null), ArticleFig(id=1322942306491433660, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图8, caption=
新疆阜康低阶煤分子模型验证对比结果, figureFileSmall=ITpZmmpfH57+3UGH9KbLnw==, figureFileBig=2tTdIv1dl23x1I2AbnBJ0w==, tableContent=null), ArticleFig(id=1322942306915058365, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig. 9, caption=
Impact of formation pressure on methane adsorption configuration and potential energy under various slit apertures of Fukang low-rank coal, Xinjiang, figureFileSmall=XpW+3xoFng1Hu9m7n0A73A==, figureFileBig=RxYLUbsKTyB/WJw+zeEfNg==, tableContent=null), ArticleFig(id=1322942307347071680, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图9, caption=
新疆阜康低阶煤不同狭缝开度下地层压力对甲烷吸附构型与势能的影响, figureFileSmall=XpW+3xoFng1Hu9m7n0A73A==, figureFileBig=RxYLUbsKTyB/WJw+zeEfNg==, tableContent=null), ArticleFig(id=1322942307753919169, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig. 10, caption=
Impact of formation pressure on methane density under various slit apertures of Fukang low-rank coal, Xinjiang, figureFileSmall=gEXHrUh2qLSgypQJUlSbqw==, figureFileBig=fjlKJNgZzeSwkYt9KHX+eA==, tableContent=null), ArticleFig(id=1322942307837805251, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图10, caption=
新疆阜康低阶煤不同狭缝开度下地层压力对甲烷密度的影响, figureFileSmall=gEXHrUh2qLSgypQJUlSbqw==, figureFileBig=fjlKJNgZzeSwkYt9KHX+eA==, tableContent=null), ArticleFig(id=1322942308202709700, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig. 11, caption=
Impact of formation temperature on methane adsorption potential energy under varying slit apertures of Fukang low-rank coal, Xinjiang, figureFileSmall=QziWnG3V9InEF56wWBecxA==, figureFileBig=myO2NB9CTYAJUaAhHFAysQ==, tableContent=null), ArticleFig(id=1322942308282401477, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图11, caption=
新疆阜康低阶煤不同狭缝开度下地层温度对甲烷吸附势能的影响, figureFileSmall=QziWnG3V9InEF56wWBecxA==, figureFileBig=myO2NB9CTYAJUaAhHFAysQ==, tableContent=null), ArticleFig(id=1322942308638917318, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig. 12, caption=
Impact of formation temperature on methane density under various slit apertures of Fukang low-rank coal, Xinjiang, figureFileSmall=mZBnQ6s5Hvuw7RdBaGQ6fQ==, figureFileBig=AuTFpT9EDnge4yECOyj5iQ==, tableContent=null), ArticleFig(id=1322942308999627465, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图12, caption=
新疆阜康低阶煤不同狭缝开度下地层温度对甲烷密度的影响, figureFileSmall=mZBnQ6s5Hvuw7RdBaGQ6fQ==, figureFileBig=AuTFpT9EDnge4yECOyj5iQ==, tableContent=null), ArticleFig(id=1322942309079319242, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig. 13, caption=
Evolutionary curves of methane density during pressure reduction and desorption under varying slit apertures of Fukang low-rank coal, Xinjiang, figureFileSmall=zPh6SA/Ih2OjFCdmJCEl1A==, figureFileBig=KwQ044XNTt73NKTINdsZgw==, tableContent=null), ArticleFig(id=1322942309175788235, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图13, caption=
新疆阜康低阶煤不同狭缝开度下降压解吸的甲烷密度的演化曲线, figureFileSmall=zPh6SA/Ih2OjFCdmJCEl1A==, figureFileBig=KwQ044XNTt73NKTINdsZgw==, tableContent=null), ArticleFig(id=1322942309398086349, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Fig. 14, caption=
Evolutionary curves of methane kinetic parameters during pressure reduction and desorption at different slit apertures of Fukang low-rank coal, Xinjiang, figureFileSmall=n4rv+6pfGJIFX66BPbRdAg==, figureFileBig=qltsL+XrScuCRhf6Y/wlWQ==, tableContent=null), ArticleFig(id=1322942309486166734, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=图14, caption=
新疆阜康低阶煤不同狭缝开度下降压解吸的甲烷动力学参数演化曲线, figureFileSmall=n4rv+6pfGJIFX66BPbRdAg==, figureFileBig=qltsL+XrScuCRhf6Y/wlWQ==, tableContent=null), ArticleFig(id=1322942309825905360, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Table 1, caption=
Carbon structural types and relative contents of Fukang low-rank coal,Xinjiang,based on 13C-NMR, figureFileSmall=null, figureFileBig=null, tableContent=
| 碳结构类型 | 脂肪族甲基 | 亚甲基 | 芳香族甲基 | 苯环 | 苯酚羟基 | 羧基 |
|---|
| 平均值/% | 7.50 | 11.31 | 16.98 | 35.61 | 17.23 | 11.36 |
| 化学位移 | 13 | 22~29 | 30~32 | 110~132 | 132~150 | 220~250 |
| 1号样品相对含量/% | 12.62 | 3.88 | 19.02 | 33.88 | 19.66 | 10.93 |
| 3号样品相对含量/% | 5.54 | 11.24 | 19.56 | 30.50 | 20.95 | 12.21 |
| 4号样品相对含量/% | 4.35 | 18.81 | 12.37 | 42.45 | 11.09 | 10.93 |
), ArticleFig(id=1322942309918180049, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=表1, caption=
新疆阜康低阶煤13C核磁共振碳结构类型及相对含量
, figureFileSmall=null, figureFileBig=null, tableContent=
| 碳结构类型 | 脂肪族甲基 | 亚甲基 | 芳香族甲基 | 苯环 | 苯酚羟基 | 羧基 |
|---|
| 平均值/% | 7.50 | 11.31 | 16.98 | 35.61 | 17.23 | 11.36 |
| 化学位移 | 13 | 22~29 | 30~32 | 110~132 | 132~150 | 220~250 |
| 1号样品相对含量/% | 12.62 | 3.88 | 19.02 | 33.88 | 19.66 | 10.93 |
| 3号样品相对含量/% | 5.54 | 11.24 | 19.56 | 30.50 | 20.95 | 12.21 |
| 4号样品相对含量/% | 4.35 | 18.81 | 12.37 | 42.45 | 11.09 | 10.93 |
), ArticleFig(id=1322942310241141458, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Table 2, caption=
Molecular structures and numbers of Fukang low-rank coal,Xinjiang, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 碳链 | 苯酚 | 萘环 | 苯环 | 羧基 | 醇羟基 | 吡咯 |
|---|
| 分子结构 | | | | | | | |
| 数量/个 | 22 | 9 | 3 | 3 | 6 | 6 | 3 |
), ArticleFig(id=1322942310341804756, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=表2, caption=
新疆阜康低阶煤分子结构及数量
, figureFileSmall=null, figureFileBig=null, tableContent=
| 名称 | 碳链 | 苯酚 | 萘环 | 苯环 | 羧基 | 醇羟基 | 吡咯 |
|---|
| 分子结构 | | | | | | | |
| 数量/个 | 22 | 9 | 3 | 3 | 6 | 6 | 3 |
), ArticleFig(id=1322942310710903509, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=EN, label=Table 3, caption=
Methane pressure-fugacity conversion for simulation system of Fukang low-rank coal in Xinjiang, figureFileSmall=null, figureFileBig=null, tableContent=
| 压力/MPa | 逸度系数 | 逸度/MPa |
|---|
| 0.1 | 0.999 9 | 0.099 99 |
| 1.0 | 0.989 7 | 0.989 70 |
| 5.0 | 0.952 9 | 4.764 50 |
| 10.0 | 0.915 7 | 9.157 00 |
), ArticleFig(id=1322942310786400983, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942260375060992, language=CN, label=表3, caption=
新疆阜康低阶煤模拟体系甲烷压力-逸度转换
, figureFileSmall=null, figureFileBig=null, tableContent=
| 压力/MPa | 逸度系数 | 逸度/MPa |
|---|
| 0.1 | 0.999 9 | 0.099 99 |
| 1.0 | 0.989 7 | 0.989 70 |
| 5.0 | 0.952 9 | 4.764 50 |
| 10.0 | 0.915 7 | 9.157 00 |
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