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Journal of Rock Mechanics and Geotechnical Engineering 2023年第8期15卷 1924-1930页

作者： Shaocheng Ji Département des Génies civil Géologique et des MinesÉcole Polytechnique de MontréalMontréalQuébecH3C 3A7Canada

Fractures occur in nearly all rocks at the Earth’s surface and exert essential control on the mechanical strengths of rock masses and *** fractures strongly impact the stability of geological or man-made structures and flow of water and hydrocarbons,cO_(2) and storing *** this,the dependence of opening mode fracture spacing(s)on bed thickness(t)in sedimentary basins(reservoirs)is studied in this *** paper shows that the MichaeliseMenten equation can provide an algebraic expression for the nonlinear s-t *** two parameters have clear geological meanings:a is the maximum fracture spacing which can no longer increase with increasing t,and b is the characteristic bed thickness when s=*** tensile fracture strength(c)of the brittle beds during the formation of tensile fractures can be estimated from the two *** sandstones of 16 areas reported in the literature,c ranges from 2.7 MPa to 15.7 MPa with a mean value of 8 MPa,which lies reasonably within the range of tensile strengths determined *** field-based approach by means of MichaeliseMenten equation provides a new method for estimating the tensile fracture strength of rock layers under natural conditions.

关键词： Fracture spacing Sedimentary rocks Michaelisementen equation Tensile fracture strength Rock fracture mechanics

A stratigraphical-geochemical study on the chaco Paraná continental rift basin—An approach study based on regional sedimentology and drill-hole core analyses, South América

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chinese Journal Of Geochemistry 2006年第3期25卷 195-215页

作者： Roberto Toga Departamento de Geociencias. Facultad de Ingenierta. Universidad Nacional del Nordeste Avda. Las Heras 727 H3500C01. Resistervcia Chaco Argentina

This paper is focused on a geologic “regional rift basin system pattern” and its stratigraphical-geochemical relationship. This is mainly based on the littoral shallow marine sedimentary succession paleogeography and deposits. These successions characterize the large extensional intracratonic chaco Paraná Basin rift system. The basin is located in South America west of the Brazilian Shield. The analyzed rift basin system evolved from the Upper cretaceous (Late campanian-Senonian-Maastrichtian-Early Paleocene) to Quaternary time. The siliciclastic littoral shallow marine successions were deposited from Early Senonian-Maastrichtian to Late Miocene during three main successive littoral shallow marine transgressions of continental extension.; These transgressions happened over the wide pediplanized terrains of South America. These lands exist west of the more positive areas, between the Brazilian Shield and the foreland massifs that were settled in the more westernwards areas. Later, these regional foreland massifs were coupled and raised to the Andean Orogen Belt during the last 5 million years.; The extensive intracratonic pediplanized low topographic relief areas were the reservoirs of siliciclastic littoral shallow marine succession deposits during the three successive widespread vast continental littoral shallow marine transgressions.; The first transgression began at the Latest campanian-Senonian and/or Early Maastrichtian time. After this episode, the sedimentary depositional systems continued during the cenozoic until the Latest Miocene. These successions constitute a major allostratigraphic unit. The limit with underlying units is the regional unconformity between the regional volcanic event (Jurassic-cretacic and interleaved eolianite sandstones) at the base and the undifferentiated Quaternary sediments (called as the Pampeano and Post-Pampeano Formations sensu lato). Based on many facies analyses there had been checked out different levels in the eustatic sea

关键词：地层学地球化学古地理学裂谷盆地白垩纪新生界阿根廷

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碳酸盐岩白垩状结构成岩环境及成因

古地理学报 2010年第1期12卷 1-16页

作者：吴熙纯王权锋 Sun Shaoqing 成都理工大学能源学院四川成都610059 成都理工大学数学地质四川省高校重点实验室四川成都610059 c ＆ c reservoirs Inc. Maidenhead Berks United Kingdom

白垩状结构碳酸盐岩是一种白色或淡色疏松、酥脆、多微孔的灰岩。狭义白垩状结构灰岩是指深水盆地、陆棚斜坡及内台地局限海(如潟湖)相中形成的白垩状微孔隙灰泥岩及粒泥岩。广义白垩状结构灰岩指盆地相和陆棚相中包括生物礁、滩的各种... 详细信息

白垩状结构碳酸盐岩是一种白色或淡色疏松、酥脆、多微孔的灰岩。狭义白垩状结构灰岩是指深水盆地、陆棚斜坡及内台地局限海(如潟湖)相中形成的白垩状微孔隙灰泥岩及粒泥岩。广义白垩状结构灰岩指盆地相和陆棚相中包括生物礁、滩的各种沉积体内各种沉积组构产生的白垩状灰岩,也包括白垩状去白云化灰岩及(真)白垩。综合各国学者的有关研究资料,建议将白垩状结构化定义为:"碳酸盐沉积物和碳酸盐岩中的镁方解石和文石在不同成岩阶段通过新生变形而转变成低镁方解石微晶和微亮晶格架,并在其中产生和保存晶间孔喉网络的作用;强化白垩状结构化是指微晶和微亮晶格架受到进一步溶蚀和淋滤,从而形成次生溶蚀孔隙网络的作用"。论述了世界各地的地史中不同成岩阶段白垩状结构碳酸盐岩成岩环境的例证和白垩状结构化成因。

关键词：白垩状结构碳酸盐岩成岩环境白垩状结构化成因

LA-IcP-MS U-Pb Age, clumped and Stable Isotope constraints on the Origin of Middle Permian coarse-crystalline Dolomite reservoirs in Northwest Sichuan Basin, Southwest china

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Acta Geologica Sinica(English Edition) 2020年第4期94卷 1312-1313页

作者： PAN Liyin SHEN Anjiang HU Anping HAO Yi ZHAO Jianxin Key Laboratory of carbonate reservoirs China National Petroleum CorporationHangzhouZhejiang 310023China Petrochina Hangzhou Research Institute of Geology HangzhouZhejiang 310023China Department of Geology University of KansasLawrenceKS 66045USA Radiogenic Isotope Facility School of Earth Sciencesthe University of QueenslandBrisbane 4072QLDAustralia

Objective The recent discovery of commercial natural gas accumulations in the Middle Permian coarse-crystalline dolomites in the northwest Sichuan Basin has attracted attention to the formation mechanism of these deep-burial carbonate *** to their temporal relationship to the flooded basalts that represent the end-Middle-Permian Emeishan Large Igneous Province(ELIP),the Middle Permian dolomites were prev iously thought to be products of hydrothermal dolomitization related to the ELIP *** and core observations,however,show that the occurrence and distribution of these dolomites are not controlled by faults,the supposed conduits for hydrothermal ***,they are somewhat ***,the objective of this study,by employing LA-IcP-MS U-Pb dating,clumped isotope thermometry(047)and routine stable isotope geochemistry(c carbon,O oxygen and Sr strontium isotopes),is to re-evaluate the genesis of these dolomite reservoirs,with special attention focusing on the diagenetic environment and timing of dolomitization,and the attributes of dolomitizing fluids.

关键词： Permian Middle reservoirs

A novel triple responsive smart fluid for tight oil fracturing-oil expulsion integration

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Petroleum Science 2023年第2期20卷 982-992页

作者： Ming-Wei Gao Ming-Shan Zhang Heng-Yi Du Ming-Wei Zhao cai-Li Dai Qing You Shun Liu Zhe-Hui Jin Shandong Key Laboratory of Oilfield chemistry(china University of Petroleum(East china)) Qingdao266580ShandongPR China Key Laboratory of Unconventional Oil&Gas Development(china University of Petroleum(East china)) Ministry of EducationQingdao266580ShandongPR China Department of civil and Environmental Engineering University of AlbertaEdmontonAlbertaT6G 1H9Canada Shaanxi Key Laboratory of Advanced Stimulation Technology for Oil&Gas reservoirs Engineering Research Center of Development and Management for Low to Ultra-low Permeability Oil&Gas Reservoirs in West China(Ministry of Education)Xi'an Shiyou UniversityXi'an710065ShaanxiPR China School of Energy Resources China University of GeosciencesBeijing100083PR China

The traditional multi-process to enhance tight oil recovery based on fracturing and huff-n-puff has obvious deficiencies,such as low recovery efficiency,rapid production decline,high cost,and complexity,***,a new technology,the so-called fracturing-oil expulsion integration,which does not need flowback after fracturing while making full use of the fracturing energy and gel breaking fluids,are needed to enable efficient exploitation of tight oil.A novel triple-responsive smart fluid based on“pseudo-Gemini”zwitterionic viscoelastic surfactant(VES)consisting of N-erucylamidopropyl-N,N-dimethyl-3-ammonio-2-hydroxy-1-propane-sulfonate(EHSB),N,N,N′,N′-tetramethyl-1,3-propanediamine(TMEDA)and sodium p-toluenesulfonate(NaPts),is ***,the rheology of smart fluid is systematically studied at varying conditions(cO_(2),temperature and pressure).Moreover,the mechanism of triple-response is discussed in ***,a series of fracturing and spontaneous imbibition performances are systematically *** smart fluid shows excellent cO_(2)-,thermal-,and pressure-triple responsive *** can meet the technical requirement of tight oil fracturing construction at 140°c in the presence of 3.5 MPa cO_(2).The gel breaking fluid shows excellent spontaneous imbibition oil expulsion(∼40%),salt resistance(1.2×104 mg/L Na+),temperature resistance(140°c)and aging stability(30 days).

关键词： Fracturing-oil expulsion integration Tight oil Triple responsive smart fluid "Pseudo-gemini"zwitterionic surfactant Fracturing fluid Spontaneous imbibition

Hydrocarbon generation differences of shales composed of green algal and cyanobacteria: A case study of Mesozoic and cenozoic saline lacustrine shales in Junggar Basin, NW china

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Petroleum Science 2023年第6期20卷 3348-3362页

作者： Miao Yu Gang Gao Wan-Yun Ma Miao Liu Ni Zhou You-Jin Zhang Dan He Ke-Ting Fan Liu-Lin-Bo Guo Jie Li college of Geosciences China University of PetroleumBeijing102249China Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing102249China Research Institute of Experimental Testing Xinjiang Oilfield CompanyPetroChinaKaramay834000XinjiangChina Xinjiang conglomerate Reservoir Laboratory Karamay834000XinjiangChina Key Laboratory of Exploration and Development of conglomerate reservoirs Karamay834000XinjiangChina

The Mesozoic and cenozoic strata in the Junggar basin developed two sets of shallow to semi-deep lacustrine shale, namely, the cretaceous Qingshuihe Formation (K_(1q)) and the Paleogene Anjihaihe Formation (E_(2-3a)). Through organic petrology and scanning electron microscope (SEM) observation, it is found that the primary hydrocarbon-generating organic matter (OM) in the two sets of strata is different. The biological precursor of the E_(2-3a) OM is mainly green algae (Pediastrum), while the precursor of K_(1q) kerogen is mainly cyanobacteria (Oscillatoria). Then, the E_(2-3a) green algae-rich shale and K_(1q) cyanobacteria-rich shale were subjected to hydrous pyrolysis and kinetic analysis, respectively. The results show that the evolution modes of hydrocarbon generation of the typical shales are very different. Green algae have the characteristics of a low oil generation threshold, heavy oil quality, and no prominent oil peak, while cyanobacteria have the characteristics of late oil generation, concentrated hydrocarbon generation, and relatively light oil quality. The characteristics of oil generation can also be well reflected in the composition evolution of the crude oil components. The carbon isotope of gas, kerogen, and extracts of the E_(2-3a) green algae-rich shale are significantly heavier than the K_(1q) cyanobacteria-rich shale, which may be related to the living habits of their biological precursors, carbon source usage, photosynthesis efficiency, and carbon fixation efficiency.

关键词： Green algae cyanobacteria Shale Anjhaihe Formation Qingshuihe Formation Junggar Basin

A systematic rheological study of alkyl amine surfactants for fluid mobility control in hydrocarbon reservoirs

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Petroleum Science 2018年第3期15卷 538-551页

作者： Madalyn M. Liebum George Hirasaki Quoc P. Nguyen Petroleum and Geosystems Engineering Department The University of Texas at Austin 200 E.Dean Keeton St.Stop C0300 Room CPE 5.104 A Austin TX 78712 USA Highlands Ranch CO 80129 USA

The basis of this study is to identify the versatility of N,N,N＇-trimethyl-N＇-tallow-1,3-diaminopropane（DTTM） surfactant in high saline environments. The surfactant was examined with sodium chloride, Nacl, to understand how triggers such as salt, p H, temperature, and surfactant concentration influences the viscoelastic response of the surfactant solution. The DTTM surfactant and salt（Nacl） concentrations used in steady-state shear viscosity analysis range from 0.2 wt% to 2 wt%and 5 wt% to 25 wt%, respectively. Along with DTTM results, three similar chemical structures are investigated to understand how viscosity changes with alterations in tail and head group composition. It was found that DTTM surfactant has the capability of transitioning from a foam-bearing to viscoelastic state at low surfactant concentrations under moderate to high saline conditions. A longer tail length promotes viscoelasticity and shear-thinning behavior. Terminals consisting of hydroxides or ethoxylates have a lower viscosity than that of methyl terminals. A head group consisting of two nitrogen atoms has a higher viscosity than those containing one nitrogen atom. The rheological characterization of DTTM presented in this paper is part of a larger study in determining the capability of this surfactant to foam cO2 for improving mobility control in cO2 enhanced oil recovery in high saline oil formations.

关键词： Rheology Surfactants Wormlike micelles Viscoelastic Amines

Laboratory study of the factors affecting hydraulic fracturing effect for inter-salt oil shale layers,Qianjiang Depression,china

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Petroleum Science 2023年第3期20卷 1690-1706页

作者： Jun Zhou Guang-Ai Wu Ya-Nan Geng Yin-Tong Guo Xin chang cheng-Yong Peng chuan-Zhi Ai cN00c Research Institute Ltd. Bejing100028China State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071Hubei China University of chinese Academy of Sciences Beijing100049China

This study aims to investigate the potential factors affecting hydraulic fracturing of inter-salt oil shale reservoirs in the Qianjiang Depression,*** the inter-salt shale samples,the re-crystallization seepage tests,rock mechanical tests under high temperature and pressure,salt rock creep tests,and direct shear tests were *** testing results suggest several major factors that affect hydraulic fracturing effects in the ***,the seepage of reservoir and fracturing fluid through hydraulic frac-tures leads to salt dissolution and crystallization,reducing the effective seepage area of ***,the salt crystal may block the pore throats or micro fractures after brine invades the shale,decreasing the overall ***,the low strength and obvious plasticity of inter-salt shale and the strong creep characteristics of salt rock raise difficulties for proppant to effectively support fracture walls,thereby sharply narrowing the hydraulic fracture ***,the weak interfaces(bedding planes and lithology interfaces)in inter-salt oil shale reservoirs restrict the height of hydraulic fractures,resulting in the disconnection of seepage channels between multiple inter-salt shale ***,several factors together reduce reservoir permeability,weaken the fluid flow capacity in the fracture,narrow the fracture width,and limit the effective stimulation volume,resulting in weaken the effect hydraulic fracturing.

关键词： Shale oil Salt rock Qianjiang Depression Hydraulic fracturing Recrystallization

A review of in situ upgrading technology for heavy crude oil

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Petroleum 2021年第2期7卷 117-122页

作者： Yibo Li Zhiqiang Wang Zhiming Hu Yalong Li Wanfen Pu Jinzhou Zhao State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengduChina Petro china Research Institute of Petroleum Exploration&Development LangfangChina c Karamay Hongshan Oilfield Co.Ltd.XinjiangChina

With the growing demand of oil worldwide,heavy oil has increasingly become vital in the world energy ***,further development of heavy oil reservoirs are limited by regular enhanced oil recovery(EOR)*** situ upgrading technology provides potential for the development of heavy oil and bitumen *** study reviews three categories of in situ upgrading methods:solvent-based,in situ combustion(ISc),and ***-based methods,including cyclic solvent injection,vapor extraction,and hybrid processes,have recently received attention and have been progressed in both laboratory and field ***,high solvent costs in relation to the low price of heavy oil have continued to limit the field applications of these ***,which may have the potential to develop particularly harsh reservoirs with extremely viscous crude oil,involves complex reaction mechanisms and consists of three main steps:oxidation,combustion,and gas ***,complex operating conditions and a low success rate have restricted its *** methods,which have demonstrated the potential to refine and upgrade crude oil in a more economic and environmentally friendly way,are often accompanied by conventional thermal EOR methods,such as steam flooding and ISc,and involve a series of hydroprocessing or hydrotreating reactions,such as hydrocracking,hydrodesulfurization,hydrodenitrogenation,hydrodeoxygenation,and ***,the high cost and complexity of the reaction mechanisms have limited their applications.

关键词： In situ upgrading Heavy oil Bitumen In situ combustion catalytic Solvent

Hydrocarbon Generation characteristics of coal-measure Source Rocks and their contribution to Natural Gas:A case Study of Middle and Lower Jurassic Targets from the Southern Junggar Basin Margin

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Acta Geologica Sinica(English Edition) 2024年第5期98卷 1270-1284页

作者： YU Miao GAO Gang LIU Miao MA Wanyun TIAN Anqi FAN Keting GUO Liulinbo HE Dan ZHANG Youjin college of Geosciences China University of PetroleumBeijing 102249China National Key Laboratory of Petroleum Resources and Engineering China University of PetroleumBeijing 102249China Research Institute of Experimental Testing Xinjiang Oilfield CompanyPetroChinaKaramayXinjiang 834000China Xinjiang conglomerate Reservoir Laboratory KaramayXinjiang 834000China Key Laboratory of Exploration and Development of conglomerate reservoirs KaramayXinjiang 834000China

In order to study the hydrocarbon generation(HcGE)characteristics of coal-bearing basins,the coal-measure source rocks of the Middle Jurassic-Lower Jurassic(MLJ)of the piedmont thrust belt in the southern margin of the Junggar Basin in Northwest china are taken as research *** than 60 MLJ samples were collected from outcrops and *** organic carbon(TOc),rock pyrolysis(Rock-Eval),organic petrological,vitrinite reflectance(%Ro),and hydrous pyrolysis were performed to analyze the relevant *** pyrolysis gases and liquid products were measured,and then the chemical composition,as well as carbon isotopes of the gases,were *** results indicate that the MLJ source rocks have the capacity for large-scale gas *** addition,for coal-measure source rocks,the heavier the carbon isotope of kerogen(δ^(13)c_(kerogen)),the lower the liquid hydrocarbon and hydrocarbon gas yield,and the easier it is to produce non-hydrocarbon *** is worth noting that when theδ^(13)c_(kerogen)in organic matter(OM)is relatively heavier,the fractionation of its products may become weaker in the evolutionary *** vital contribution of the MLJ source rock to natural gas resources in the study area was further confirmed by comparing it with the Jurassic source gas.

关键词： upstream natural resources/energy coal-bearing basins source rock hydrous pyrolysis carbon isotope Jurassic Xinjiang province