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Study of corrosion mechanism of dawsonite led by CO_(2)partial pressure

Frontiers of Earth Science 2022年第2期16卷 465-482页

作者： fulai li Hao DIAO Wenkuan MA Maozhen WANG Shandong Provincial Key Laboratory of Deep Oil and Gas School of GeosciencesChina University of Petroleum(East China)Qingdao 266580China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China Bohai Oilfield Research Institute Tianjin Branch of CNOOC China LimitedTianjin 300452China

The stability of dawsonite is an important factor affecting the feasibility evaluation of CO_(2)geological *** this paper,a series of experiments on the interaction of CO_(2)-water-dawsonite-bearing sandstone were carried out under different CO_(2)*** the dissolution morphology and element composition of dawsonite after the experiment and the fluid evolution in equilibrium with dawsonite,the corrosion mechanism of dawsonite led by CO_(2)partial pressure was *** CO_(2)fugacity of the vapor phase in the system was calculated using the Peng-Robinson equation of state combined with the van der Waals 1-fluid mixing *** experimental results indicated that the thermodynamic stability of dawsonite increased with the increase of CO_(2)partial pressure and decreased with the increase of *** temperature at which dawsonite dissolution occurred was higher at higher f_(CO_(2)).There were two different ways to reduce dawsonite’s stability:the transformation of constituent elements and crystal structure *** undergoes component element transformation and crystal structure damage under different CO_(2)pressures with certain temperature *** on the comparison of the corrosion temperature of dawsonite,three corrosion evolution models of dawsonite under low,medium,and high CO_(2)pressures were *** conditions of medium and low CO_(2)pressure,as the temperature continued to increase and exceeded its stability limit,the dawsonite crystal structure was corroded *** the constituent elements of dawsonite dissolved,and the transformation of dawsonite to gibbsite *** high CO_(2)pressure,the constituent elements of dawsonite dissolved first with the increase of temperature,forming gibbsite,followed by the corrosion of crystalline structure.

关键词： dawsonite stability CO_(2)-water-rock interaction corrosion mechanism CO_(2)geological storage

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lithofacies and Pore Structure of Fine-grained Sedimentary Rocks of Qing-1 Member of Cretaceous in the Southern Songliao Basin

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Acta Geologica Sinica(English Edition) 2021年第2期95卷 570-584页

作者： liN Lamei liU Su XU Yang li fulai School of Geosciences China University of PetroleumQingdaoShandong 266580China

Fine-grained sedimentary rocks often contain hydrocarbon and mineral *** with coarse-grained sedimentary rocks,fine-grained sedimentary rocks are less *** elucidate the lithofacies and pore structure of lacustrine fine-grained rocks,the 340.6 m continuous core of Cretaceous Qing-1 Member from five wells in the southern central depression of the Songliao Basin was analyzed using X-ray diffraction,Rock-Eval pyrolysis,low-temperature nitrogen adsorption,high-pressure mercury injection,argon ion polishing-field emission scanning electron microscopy,and laser scanning confocal *** on mineral compositions,organic matter abundance and sedimentary structure,lacustrine fine-grained rocks in the study area were divided into ten lithofacies,with their spatial distributions mainly influenced by tectonic cycle,climate cycle and ***,pore structure characteristics of different lithofacies are summarized.(1)The siliceous mudstone lithofacies with low TOC content and the laminated/layered claybearing siliceous mudstone lithofacies with medium TOC content have the highest proportion of first-class pores(diameter>100 nm),making it the most favourable lithofacies for the accumulation of shale oil and shale gas.(2)The massive claybearing siliceous mudstone lithofacies with low TOC content has the highest proportion of second-class pores(diameter ranges from 10 to 100 nm),making it a favourable lithofacies for the enrichment of shale gas.(3)The massive clay-bearing siliceous mudstone lithofacies with high TOC content has the highest proportion of third-class pores(diameterlight part with higher mobility is mainly concentrated in the silty lamina.

关键词： fine-grained sedimentary rocks lithofacies pore composition shale oil Cretaceous Qingshankou Formation Songliao Basin

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Evolution of Diagenetic Fluid of the Dawsonite-Bearing Sandstone in the Jiyang Depression,Eastern China

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Journal of Ocean University of China 2024年第1期23卷 80-98页

作者： li fulai MA Wenkuan ZHANG Chun WANG Kaining National Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)Qingdao 266580China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China Shandong Geological Exploration Institute of China Chemical Geology and Mine Bureau Jinan 250013China

Based on the petrology,isotope geochemistry and fluid inclusions analysis,we established the evolutionary mode of the diagenetic fluid of dawsonite-bearing sandstone in the Jiyang ***-bearing sandstone is characterized by double injection of CO_(2)and oil-gas in the Jiyang Depression that have experienced a relatively complex diagenetic fluid evolution *** diagenetic sequence of secondary minerals involves secondary enlargement of quartz,kaolinite,first-stage calcite,dawsonite,second-stage calcite,ferrocalcite,dolomite and *** charging in the dawsonite-bearing sandstone occurred at around 2.6–0 *** CO_(2)charging event occurred during Dongying tectonism,forming the Pingfangwang CO_(2)gas reservoir,which provided an abundant carbon source for dawsonite *** and oxygen isotopic compositions of dawsonite demonstrate that CO_(2)forming the dawsonite was of an inorganic origin derived from the mantle,and that water mediating the proc-ess during dawsonite precipitation was sequestered brine with a fluid temperature of 82℃.The evolutionary sequence of the diagenetic fluid in the dawsonite-bearing sandstone was:alkaline syngenetic fluids,weak alkaline fluids during organic acid forma-tion,acidic fluids in the early stage of CO_(2)injection,alkaline fluids in the late stage of CO_(2)injection,and weak alkaline fluids during oil and gas *** mode indicates an increase in-HCO_(3)because of the CO_(2)injection,and the loss of Ca^(2+)and Mg^(2+)due to the precipitation of carbonate ***,the evolutionary mode of diagenetic fluids is in good agreement with high HCO_(3)^(-),low Ca^(2+)and low Mg^(2+)composition of the present formation water in the dawsonite-bearing sandstone.

关键词： evolution of diagenetic fluid dawsonite CO_(2)injection and hydrocarbon charging mineral diagenetic sequence iso-topic geochemistry fluid inclusions

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Pores Characteristics of Different Types of Shale in China

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Acta Geologica Sinica(English Edition) 2015年第A1期89卷 51-54页

作者： li fulai WANG Maozhen li Wenshuai China University of Petroleum (East China) Qingdao Shandong 266580 Bohai Oilfield Research Institude Tianjin Branch of CNOOC China Limited Tianjin 300452

1 Introduction As the rapid development of the exploration of unconventional oil and gas resources, shale gas resources in China have been becoming the focus of unconventional oil and gas resources research with the c...

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Discriminating hydrocarbon generation potential of coaly source rocks and their contribution:a case study from the Upper Paleozoic of Bohai Bay Basin,China

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Frontiers of Earth Science 2021年第4期15卷 876-891页

作者： Jinjun XU Da LOU Qiang JIN lixin FU Fuqi CHENG Shuhui ZHOU Xiuhong WANG Chao liANG fulai li Shandong Provincial Key Laboratory of Deep Oil and Gas Qingdao 266580China PetroChina Dagang Oilfield Company Tianjin 300280China Research Institute of Petroleum Exploration and Development Shengli Oilfield CompanySinopecDongying 257015China

Although various coaly source rocks widely developed in the Carboniferous-Permian(C-P)of the Bohai Bay Basin,their geochemical characteristics and hydrocarbon generation potential are poorly *** study aims to discriminate the contribution of hydrocarbon generation from different C-P coaly source rocks and clarify the differences within generated oils using organic geochemistry,organic petrology,and thermal simulation *** coaly source rocks containt coal clarain and durain,carbonaceous shale,and shale deposited in deltaic and lagoonal *** results indicated that clarain,durain,and carbonaceous shale exhibited higher hydrogen index and liquid-gas hydrocarbon yields than lagoonal and deltaic shales,which was mainly associated with the concentrations of sporinite,cutinite,and hydrogen-rich *** hydro-carbons originated firom coal and carbonaceous shale presented lower Ts/(Ts+Tm),Ga/17α(H)21β(H)-C_(30)hopane,18α(H)-oleanane/17α(H)21β(H)-C_(30)hopane ratios,and higher 17β3(H)21α(H)-C_(30)Morane/17α(H)21β(H)-C_(30)hopane than deltaic lagoonal *** of aromatic hydrocarbons generated from five lithologies of coaly source rocks trended as clear group distribution,e.g.,clarain and durain showing lower MNR,DBT/Fluorene(F)ratios and higher DBF/F ratio than coaly *** distinct descending trend of hydrocarbon potential is obtained from clarain,durain,carbonaceous shale to lagoonal and deltaic shales,implying dominated the petroleum and natural gas supplement from coal and carbonaceous *** difference between aliphatic and aromatic hydrocarbons provides a significant contribution to analyze the generic relationship between coaly source rock and lacustrine *** results illustrate the importance of coaly source rocks for the in-depth oil-gas exploration of the Bohai Bay Basin and understanding hydrocarbon generation potential of source rocks in coal bearing strata.

关键词： thermal simulation hydrocarbon generation coaly source rock Carboniferous-Permian Bohai Bay Basin

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The Study of The Tight Sandstone Reservoir’s Characteristics and The Fluid Inclusions in Fuyu Oil Layer,Daqing Placanticline

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Acta Geologica Sinica(English Edition) 2015年第A1期89卷 79-80页

作者： SONG Tushun liU li li fulai liU Na ZHOU Bing North China University of Science and Technology Tangshan Hebei 063009 China College of Earth Sciences Jilin University Changchun Jilin 130061 China School of Geosciences China University of Petroleum Qingdao Shandong 266555 China

1 Introduction The exploration and development of unconventional oil and gas is gradually becoming the new hot topic, which is promoted by the increasing demand of oil and gas, as well as the decline in conventional o...

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Nphos:Database and Predictor of Protein N-phosphorylation

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Genomics, Proteomics & Bioinformatics 2024年第3期22卷 139-151页

作者： Ming-Xiao Zhao Ruo-Fan Ding Qiang Chen Junhua Meng fulai li Songsen Fu Biling Huang Yan liu Zhi-liang Ji Yufen Zhao Institute of Drug Discovery Technology Ningbo UniversityNingbo 315211China Department of Chemical Biology Key Laboratory for Chemical Biology of Fujian ProvinceCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China State Key Laboratory of Cellular Stress Biology School of Life SciencesFaculty of Medicine and Life SciencesXiamen UniversityXiamen 361102China Zhejiang Key Laboratory of Pathophysiology Department of Biochemistry and Molecular BiologyHealth Science CenterNingbo UniversityNingbo 315211China BGI Genomics BGI-ShenzhenShenzhen 518083China Key Laboratory of Bioorganic Phosphorus Chemistry&Chemical Biology Department of ChemistryTsinghua UniversityBeijing 100084China

Protein N-phosphorylation is widely present in nature and participates in various biological ***,current knowledge on N-phosphorylation is extremely limited compared to that on *** this study,we collected 11,710 experimentally verified N-phosphosites of 7344 proteins from 39 species and subsequently constructed the database Nphos to share up-to-date information on protein *** these substantial data,we characterized the sequential and structural features of protein ***,after comparing hundreds of learning models,we chose and optimized gradient boosting decision tree(GBDT)models to predict three types of human N-phosphorylation,achieving mean area under the receiver operating characteristic curve(AUC)values of 90.56%,91.24%,and 92.01%for pHis,pLys,and pArg,***,we discovered 488,825 distinct N-phosphosites in the human *** models were also deployed in Nphos for interactive N-phosphosite *** summary,this work provides new insights and points for both flexible and focused investigations of *** will also facilitate a deeper and more systematic understanding of protein N-phosphorylation modification by providing a data and technical *** is freely available at http://***/Nphos/and http://***/Nphos/.

关键词： N-phosphorylation Post-translational modification Machine learning Database Benchmark dataset

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pH值对砂岩中CO2示踪矿物的稳定性影响实验研究

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中国石油大学学报（自然科学版） 2016年第3期40卷 16-24页

作者：李福来胡泽泉吕希学李文帅段忠丰中国石油大学地球科学与技术学院山东青岛266580 海洋国家实验室海洋矿产资源评价与探测技术功能实验室山东青岛266071 中国石油大学地球科学学院北京102249 中国石化胜利油田公司山东东营257001

研究片钠铝石形成后保持稳定的pH值临界条件,对含片钠铝石砂岩展开了不同pH值条件下水-岩反应实验。结果表明:在封闭反应体系条件下,相同pH值(pH值为4)、不同体积(10、80、500 m L)条件下,随着反应溶液体积的增大,片钠铝石溶蚀程度增强... 详细信息

研究片钠铝石形成后保持稳定的pH值临界条件,对含片钠铝石砂岩展开了不同pH值条件下水-岩反应实验。结果表明:在封闭反应体系条件下,相同pH值(pH值为4)、不同体积(10、80、500 m L)条件下,随着反应溶液体积的增大,片钠铝石溶蚀程度增强,片钠铝石稳定性降低;相同体积(500 m L)、不同pH值(4

关键词：片钠铝石稳定性水-岩反应 pH值

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基于水热耦合模拟的油气区地热开发井网布局

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天然气工业 2020年第10期40卷 156-162页

作者：段忠丰李福来巩亮杨永红李晓燕中国石油大学(华东)深层油气重点实验室中国石油大学(华东)新能源学院中国石化胜利油田分公司勘探开发研究院

我国不少含油气沉积盆地同时也赋存着大量的地热资源,探讨地热田不同开发情景下热储温压场的变化,对于确定地热资源的合理开发策略至关重要。为此,以渤海湾盆地济阳坳陷东营凹陷东营城区地热田为例,综合各类地质、钻探和岩心资料,系统... 详细信息

我国不少含油气沉积盆地同时也赋存着大量的地热资源,探讨地热田不同开发情景下热储温压场的变化,对于确定地热资源的合理开发策略至关重要。为此,以渤海湾盆地济阳坳陷东营凹陷东营城区地热田为例,综合各类地质、钻探和岩心资料,系统分析了该区储盖组合、地层热导率、温压场等地热地质特征,进而采用以Tough2为核心的Petrasim软件建立了地热田成因概念模型,研究了开采、回灌条件下热储的温压场响应,确定了采灌量等井网布局参数的限制条件,最后提出了地热资源开发优化策略。研究结果表明:①该区地热田最大开采量为63 m3/h,回灌量为32 m^3/h;②要实现100%回灌,需采取“一采两灌”的布井方式,最优采灌井距为400 m。结论认为:①合理的地热田概念模型是进行数值模拟的前提,油气田在长期的勘探过程中积累了丰富的地质、地温和岩心测试数据资料,为正确认识油气区的地热资源分布和热储特征提供了数据支撑;②水热耦合数值模拟是地热田管理的有效手段,能够确定开采量、回灌量、采灌比、采灌井距等布井关键参数,有利于优化地热开发模式,进而实现地热资源的可持续开发。

关键词：渤海湾盆地东营凹陷地热田井网布局水热耦合模拟可持续开发采灌井距地热地质模型

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中国东北地区幔源-岩浆CO_2赋存的地质记录

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石油学报 2010年第1期31卷 61-67页

作者：曲希玉刘立高玉巧刘娜李福来刘红艳吉林大学地球科学学院吉林长春130061 南京大学内生金属矿床成矿机制研究国家重点实验室江苏南京210093 吉林大学测试科学实验中心吉林长春130061

在松辽盆地南部及海拉尔盆地CO2气藏和片钠铝石研究的基础上,根据中国东北地区CO2气藏中CO2的碳同位素、氦同位素,各盆地片钠铝石的碳、氧同位素的数据,以及CO2气藏(苗)与断裂和火山岩的关系,对中国东北地区CO2的成因及其与片钠铝石的... 详细信息

在松辽盆地南部及海拉尔盆地CO2气藏和片钠铝石研究的基础上,根据中国东北地区CO2气藏中CO2的碳同位素、氦同位素,各盆地片钠铝石的碳、氧同位素的数据,以及CO2气藏(苗)与断裂和火山岩的关系,对中国东北地区CO2的成因及其与片钠铝石的关系进行了研究。分析认为中国东北地区的CO2绝大多数为幔源-岩浆成因,且形成片钠铝石的CO2与幔源-岩浆CO2同源;片钠铝石是CO2的"示踪矿物",记录了地质历史时期CO2的聚集;地层水和原油中溶有大量的无机成因CO2,经CO2改造的地层水具有高矿化度及Na+、K+、HCO3-、CO32-浓度高的特点。依据片钠铝石与CO2的关系,地层水中离子浓度的变化,以及原油中溶解大量CO2的事实,总结了中国东北地区幔源-岩浆CO2赋存的地质记录。

关键词：中国东北地区幔源-岩浆CO2 片钠铝石地层水原油

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