检索结果-南通市图书馆

Petroleum Science 2018年第1期15卷 1-27页

作者： Stephan Stricker Stuart J.Jones Neil Meadows Leon Bowen Department of Earth Sciences Durham University South Road Durham DH1 3LE UK RedRock Associates International Limited 38 Queens DrivePrenton Wirral CH43 0RP UK Department of Physics Durham University South RoadDurham DH1 3LE UK

The Triassic fluvial sandstones of the Skagerrak Formation were deposited in a series of salt-walled mini-basins and act as important hydrocarbon reservoirs for several high-pressure, high-temperature（HPHT） fields in the Central Graben, North Sea. The HPHT reservoirs exhibit excellent reservoir quality considering their depth of burial and hence have been of high interest for hydrocarbon exploration. This research uses a multidisciplinary approach to assess the Skagerrak Formation fluvial reservoir quality from the Seagull field incorporating core analysis, petrography, electron microscopy, XRD analysis, fluid inclusion appraisal and burial history modelling. Halokinesis and salt withdrawal at the margin of the saltwalled mini-basin induced early disaggregation bands and fractures at shallow burial and led to increased influx of meteoric water and clay mineral infiltration from overlying sedimentation. The density of disaggregation bands correlates with the occurrence and magnitude of pore-filling authigenic clay minerals, concentrated along the margin of the saltwalled mini-basin. The fluvial channel sandstones of the Skagerrak Formation are subject to strong intra-basinal spatial reservoir quality variations despite diagenesis and low vertical effective stress having played a favourable role in arresting porosity loss.

关键词： reservoir quality Halokinesis - Diagenesis Clay minerals Porosity Disaggregation bands Salt-walled mini-basin

reservoir quality and Controlling Mechanism of the Upper Paleogene Fine-Grained Sandstones in Lacustrine Basin in the Hinterlands of Northern Qaidam Basin,NW China

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science 2023年第3期34卷 806-823页

作者： Lei Gong Xianzhi Gao Futao Qu Yongshu Zhang Guangya Zhang Jun Zhu College of Geosciences China University of PetroleumBeijing 102249China State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China Exploration&Development Research Institute of Qinghai Oilfield Company PetroChinaDunhuang 736202China Research Institute of Petroleum Exploration&Development PetroChinaBeijing 100083China

The Upper Paleogene lacustrine fine-grained sandstones in the hinterlands of the northern Qaidam Basin mainly contain two sweet spot ***/fault,microfacies,petrology,pore features,diagenesis,etc.,were innovatively combined to confirm the controlling factors on the reservoir quality of shallow delta-lacustrine fine-grained *** diagenesis of the original lake/surface/meteoric freshwater and acidic fluids related to the faults and unconformity occurred in an open geochemical *** analysis shows that the Upper Paleogene fine-grained sandstones were primarily formed in the early diagenetic B substage to the middle diagenetic A *** quality was controlled by fault systems,microfacies,burial-thermal history,diagenesis,hydrocarbon charging events(HCE),and abnormally high *** and deep double fault systems are the pathways for fluid flow and hydrocarbon *** developed in the high energy settings such as overwater(ODC)and underwater distributary channels(UDC)provide the material foundation for *** burial depth(3000-4000 m),moderate geothermal field(2.7-3.2℃/100 m),and late HCE(later than E3)represent the important factors to protect and improve pore *** freshwater with high concentrations of CO_(2)and organic acids from thermal decarboxylation are the main fluids leading to the dissolution and reformation of feldspar,rock fragments,calcite and anhydrite *** high pressure caused by the undercompaction in a large set of argillaceous rocks is the key to form high-quality *** pressure zones reduced and inhibited the damage of compaction and quartz overgrowth to reservoir pores,allowing them to be better preserved.A reservoir quality evaluation model with bidirectional migration pathways,rich in clay minerals,poor in cements,superimposed dissolution and abnormally high pressure was proposed for the ODC/UDC finegrained *** model w

关键词： sandstone reservoir quality diagenetic system genetic mechanism petroleum research Upper Paleogene northern Qaidam Basin

reservoir quality evaluation using sedimentological and petrophysical characterization of deep-water turbidites:A case study of Tariki Sandstone Member,Taranaki Basin,New Zealand

在线全文

学校读者我要写书评

暂无评论

Energy Geoscience 2023年第1期4卷 13-32页

作者： Surya Tejasvi Thota Md Aminul Islam Mohamed Ragab Shalaby Department of Geosciences Faculty of ScienceUniversiti Brunei DarussalamJalanTungku LinkGadong1410Brunei Darussalam

The current study aims to ascertain the reservoir characteristics of the Tariki Sandstone Member of the Otaraoa Formation,Taranaki Basin,New *** study was carried out by integrating the comprehensive petrophysical evaluation,sedimentological and petrographic studies,as well as well log analysis by using data from six *** porosity-permeability relationship is used to divide the samples of the Tariki Sandstone Member into reservoir and non-reservoir facies.A thorough petrophysical analysis shows that the maximum porosity values fluctuate between 16.6%and 22.1%,while permeability ranges from 102 mD to 574 mD,which indicates fair to good reservoir ***,the Tariki sandstone represents six hydraulic flow units with a high reservoir quality index and flow zone indicator representing good reservoir *** pore size varies between nano and megapores with dominant *** on the sedimentological and petrographic analysis,the Tariki Sandstone Member is classified as a combination of subarkose,arkose,and lithic arkose with fine to medium and moderately to moderately well-sorted *** main diagenetic factor affecting the reservoir quality is cementation,which occupied all the pores with *** the bright side,the secondary pores are developed due to the dissolution of calcite cement and few *** well log analysis demonstrates the presence of low clay volume ranging from 0.3%to 3.1%,fair to good effective porosity values between 13.6%and 15.9%,net pay thickness from 18.29 m to 91.44 m,and hydrocarbon saturation from 56%to 77.9%.The findings from this study revealed that the Tariki Sandstone Member possesses fair to good reservoir quality and hydrocarbon potential,which indicate submarine fans as appealing hydrocarbon *** study can be used in similar depositional environments elsewhere in the world.

关键词： reservoir quality Tariki sandstone Petrophysical analysis Petrophysical parameter

reservoir quality evaluation of the Narimba Formation in Bass Basin,Australia:Implications from petrophysical analysis,sedimentological features,capillary pressure and wetting fluid saturation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy Geoscience 2024年第1期5卷 37-53页

作者： Wafa Abdul Qader Al-Ojaili Mohamed Ragab Shalaby Wilfried Bauer Department of Applied Geosciences German University of Technology in OmanOman Geology Department Faculty of ScienceUniversity of Brunei DarussalamBrunei Darussalam Geology Department Faculty of SciencesTanta UniversityTanta31527Egypt

The evaluation of reservoir quality was accomplished on the Late Paleocene to Early Eocene Narimba Formation in Bass Basin,*** study involved combination methods such as petrophysical analysis,petrography and sedimentological studies,reservoir quality and fluid flow units from derivative parameters,and capillary pressure and wetting fluid saturation *** and diagenetic features are affecting the reservoir ***,compaction,and presence of clay minerals such as kaolinite are found to reduce the quality while dissolution and secondary porosity are noticed to improve *** is believed that the Narimba Formation is a potential reservoir with a wide range of porosity and *** ranges from 3.1%to 25.4%with a mean of 15.84%,while permeability ranges between 0.01 mD and 510 mD,with a mean of 31.05 *** on the heterogenous lithology,the formation has been categorized into five groups based on permeability *** I showed an excellent to good quality reservoir with coarse *** impacts of both textural and diagenetic features improve the reservoir and producing higher reservoir quality index(RQI)and flow zone indicators(FZI)as well as mostly mega *** non-wetting fluid migration has the higher possibility to flow in the formation while displacement pressure recorded as *** II showed a fair quality reservoir with lower petrophysical properties in macro *** irreducible water saturation is increasing while the textural and digenetic properties are still enhancing the reservoir *** III reflects lower quality reservoir with mostly macro pores and higher displacement *** may indicate smaller grain size and increasing amount of cement and clay *** IV,and V are interpreted as a poor-quality reservoir that has lower RQI and *** textural and digenetic features are negatively affecting the reservoir and are leading to smaller pore size and pore throat radii(r35)

关键词： Narimba formation Petrophysics reservoir quality Capillary pressure Wetting fluid saturation

Improvement of reservoir quality of ultra-deep tight sandstones by tectonism and fluid:A case study of Keshen gas field in Tarim Basin,western China

在线全文

学校读者我要写书评

暂无评论

Petroleum 2023年第1期9卷 124-134页

作者： Junpeng Wang Hongyan Wang Ronghu Zhang Li Dong Ke Wang Zhiyuan Zhang China University of Petroleum BeijingChina PetroChina Hangzhou Research Institute of Geology ZhejiangChina Research Institute of Petroleum Exploration&Development CNPCBeijingChina Petroleum Exploration and Production Research Institute SINOPECBeijingChina

The Keshen gas field is one of the most important natural gas supply sources in the Tarim basin,western *** main gas producing interval there is the Lower Cretaceous Bashijiqike Formation(K1bs),it is an ultra-deep tight reservoir whose buried depth exceeds 6000 m,and it shows a low matrix porosity(reservoir can supply extremely high and stable gas production due to improvement of reservoir quality by tectonism and *** on tectonic evolution analysis by plenty of lab data of core plugs or thin sections,the enhancement models of tectonism and fluid are built,evidence suggests both tectonism and fluid improve the reservoir quality *** evolution produces lots of natural fractures in 3stages which promote the ultra-deep tight reservoir permeability 10–200 times,then,testing results of new boreholes without fracturing show reservoir permeability underground can reach 20 ***,fluid dissolution increases reservoir porosity 1–2 times,the main dissolved mineral is feldspar,all fluid dissolution came from the unconformity controlling the dissolution *** and fluid interact on each other:Tectonism controls fracture distribution and types of diagenic fluid in reservoir,but fluids influence fracture cements and *** tectonic folding and the fluid flow control the sweet point reservoir located in upper 150 m formation.

关键词： reservoir quality Fluid interaction Tectonism Diagenesis Deep gas

Prediction of multiscale laminae structure and reservoir quality in fine-grained sedimentary rocks:The Permian Lucaogou Formation in Jimusar Sag,Junggar Basin

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2022年第6期19卷 2549-2571页

作者： Xiao-Jiao Pang Gui-Wen Wang Li-Chun Kuang Jin Lai Yang Gao Yi-Di Zhao Hong-Bin Li Song Wang Meng Bao Shi-Chen Liu Bing-Chang Liu State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China Technology Administration Department Petro China Company LimitedBeijing100007China Research Institute of Exploration and Development Xinjiang Oilfield CompanyPetro ChinaKaramayXinjiang834000China

Fine-grained sedimentary rocks have become a research focus as important reservoirs and source rocks for tight and shale oil and *** development determines the accumulation and production of tight and shale oil and gas in fine-grained ***,due to the resolution limit of conventional logs,it is challenging to recognize the features of centimeter-scale *** close this gap,complementary studies,including core observation,thin section,X-ray diffraction(XRD),conventional log analysis,and slabs of image logs,were conducted to unravel the centimeter-scale *** laminae recognition models were built using well *** fine-grained rocks can be divided into laminated rocks(lamina thickness of0.1 m)according to the laminae scale from core *** to the mineral superposition assemblages from thin-section observations,the laminated rocks can be further divided into binary,ternary,and multiple *** typical mineral components,slabs,and T2spectrum distributions of various lamina types are *** core can identify the centimeter-millimeter-scale laminae,and the thin section can identify the millimeter-micrometer-scale ***,they can detect mineral types and their superposition *** logs can identify the meter-scale layers,whereas image logs and related slabs can identify the laminae variations at millimeter-centimeter ***,the slab of image logs combined with thin sections can identify laminae assemblage characteristics,including the thickness and vertical *** identification and classification of lamina structure of various scales on a single well can be predicted using conventional logs,image logs,and slabs combined with thin *** layered rocks have better reservoir quality and oil-bearing potential than the massive and laminated *** laminated rocks’binary lamina is bette

关键词： Fine-grained sedimentary rocks Mineral composition Multiscale laminae structure reservoir quality Image logs Lucaogou formation

Origin of carbonate minerals and impacts on reservoir quality of the Wufeng and Longmaxi Shale, Sichuan Basin

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2023年第6期20卷 3311-3336页

作者： Yang Chen Jian-Hua Zhao Qin-Hong Hu Ke-Yu Liu Wei Wu c Chao Luo Sheng-Hui Zhao Yu-Ying Zhang National Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)QingdaoShandong266580China School of Geosciences China University of Petroleum(East China)QingdaoShandong266580China Shale Gas Research Institute PetroChina Southwest Oil and Gas Field CompanyChengduSichuan610051China Northeastern University School of Resources and Civil EngineeringShenyangLiaoning110000China

The Ordovician-Silurian Wufeng and Longmaxi Shale in the Sichuan Basin were studied to understand the genesis and diagenetic evolution of carbonate minerals and their effects on reservoir quality. The results of geochemical and petrological analyses show that calcite grains have a negative Ce anomaly indicating they formed in the oxidizing environment of seawater. The high carbonate mineral contents in the margin of basin indicate that calcite grains and cores of dolomite grains appear largely to be of detrital origin. The rhombic rims of dolomite grains and dolomite concretions with the δ^(13)C of –15.46‰ and the enrichment of middle rare earth elements were formed during the sulfate-driven anaerobic oxidation of methane. The calcite in radiolarian were related to the microbial sulfate reduction for the abundant anhedral pyrites and δ^(13)C value of –11.34‰. Calcite veins precipitated in the deep burial stage with homogenization temperature of the inclusions ranging from 146.70 ℃ to 182.90 ℃. The pores in shale are mainly organic matter pores with pore size mainly in the range of 1–20 nm in diameter. Carbonate minerals influence the development of pores through offering storage space for organic matter. When calcite contents ranging from 10% to 20%, calcite grains and cement as rigid framework can preserve primary pores. Subsequently, the thermal cracking of liquid petroleum in primary pores will form organic matter pores. The radiolarian were mostly partially filled with calcite, which combining with microcrystalline quartz preserved a high storage capacity.

关键词： Carbonate minerals genesis Diagenetic evolution Carbonate mineral types reservoir quality Wufeng and Longmaxi Shale

Complementary testing and machine learning techniques for the characterization and prediction of middle Permian tight gas sandstone reservoir quality in the northeastern Ordos Basin, China

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2024年第5期21卷 2946-2968页

作者： Zi-Yi Wang Shuang-Fang Lu Neng-Wu Zhou Yan-Cheng Liu Li-Ming Lin Ya-Xin Shang Jun Wang Guang-Shun Xiao State Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)Qingdao266580China Sanya Offshore Oil&Gas Research Institute Northeast Petroleum UniversitySanya572025HainanChina Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient Development Ministry of EducationNortheast Petroleum UniversityDaqing163318HeilongjiangChina China United Coalbed Methane Corporation Ltd. Beijing100083China

In this study, an integrated approach for diagenetic facies classification, reservoir quality analysis and quantitative wireline log prediction of tight gas sandstones(TGSs) is introduced utilizing a combination of fit-for-purpose complementary testing and machine learning techniques. The integrated approach is specialized for the middle Permian Shihezi Formation TGSs in the northeastern Ordos Basin, where operators often face significant drilling uncertainty and increased exploration risks due to low porosities and micro-Darcy range permeabilities. In this study, detrital compositions and diagenetic minerals and their pore type assemblages were analyzed using optical light microscopy, cathodoluminescence, standard scanning electron microscopy, and X-ray diffraction. Different types of diagenetic facies were delineated on this basis to capture the characteristic rock properties of the TGSs in the target formation.A combination of He porosity and permeability measurements, mercury intrusion capillary pressure and nuclear magnetic resonance data was used to analyze the mechanism of heterogeneous TGS *** found that the type, size and proportion of pores considerably varied between diagenetic facies due to differences in the initial depositional attributes and subsequent diagenetic alterations;these differences affected the size, distribution and connectivity of the pore network and varied the reservoir quality. Five types of diagenetic facies were classified:(i) grain-coating facies, which have minimal ductile grains, chlorite coatings that inhibit quartz overgrowths, large intergranular pores that dominate the pore network, the best pore structure and the greatest reservoir quality;(ii) quartz-cemented facies,which exhibit strong quartz overgrowths, intergranular porosity and a pore size decrease, resulting in the deterioration of the pore structure and reservoir quality;(iii) mixed-cemented facies, in which the cementation of various authigenic minerals inc

关键词： Diagenetic facies reservoir quality Wireline log prediction Machine learning techniques Tight gas sandstones

Impacts of Depositional Facies and Diagenesis on reservoir quality:A Case Study from the Rudist-bearing Sarvak Formation,Abadan Plain,SW Iran

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2023年第1期97卷 190-206页

作者： Ali ASSADI Javad HONARMAND Seyed Ali MOALLEMI Iraj ABDOLLAHIE-FARD Geology Division Tehran Energy Consultants(TEC)TehranIran School of Earth Sciences Damghan UniversityDamghanIran Department of Petroleum Geology Research Institute of Petroleum Industry(RIPI)TehranIran National Iranian Oil Company Exploration Directorate(NIOC)TehranIran

An integrated geological-petrophysical analysis of the rudist-bearing sequence of the Cretaceous Sarvak Formation is given one giant oilfield,and provides an improved understanding of this main reservoir in the Abadan Plain,in the Zagros Basin,SW *** main objective of this study is to evaluate reservoir potential of the Sarvak Formation,and then to utilize the calibrated well log signature to correlate reservoir potential in un-cored *** main facies are recognized and categorized in five facies groups:lagoon,shoal,rudist-biostrome,slope,and shallow open marine,deposited on a shelf carbonate *** the distribution of diagenetic products and their effects on pore systems,three diagenetic facies namely,(DF-1)low dissolution and cementation;(DF-2);high dissolution;and(DF-3)high cementation are *** initial sedimentary characteristics in combination with distribution of diagenetic products play an important role in reservoir quality *** effect of diagenetic processes related to disconformities mainly depends on the facies nature below these ***-dominated facies of shoal and rudist debris,observed below the Cenomanian–Turonian disconformity,are mostly characterized by high dissolution and interconnected pore ***,depositional and diagenetic facies in the studied wells are correlated by petrophysical well log data,leading to distribution of the reservoir *** obtained can be utilized for efficient reservoir characterization of the Sarvak Formation and its equivalent units in the Arabian Plate.

关键词： upstream petroleum facies diagenesis disconformity reservoir quality rudists Sarvak Formation Zagros Basin

Diagenetic and reservoir quality Variation of Miocene Sandstone reservoir Analogues from Three Basins of Southern California,USA

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science 2020年第5期31卷 930-949页

作者： Sunday E.Okunuwadje David MacDonald Stephen Bowden School of Geosciences University of AberdeenAberdeen AB243UEUK Department of Geology University of BeninBenin City PMB 1154Nigeria

The Miocene sandstone deposits in the Southern California region are important hydrocarbon reservoirs. However, their development has been very challenging due to the wide variability in their reservoir quality. These sandstones have been studied from three sedimentary basins by petrographic thin section, scanning electron microscope, and X-ray diffraction to evaluate and compare the influence of diagenesis on their reservoir quality in these basins. Four petrofacies, namely P1(sand injectite or dyke), P2(sub-marine fan), P3(turbidite and marine-influenced alluvial fans) and P4(continental sandstones) have been identified. P1 and P2 characterise the sandstones in the San Joaquin forearc basin and are affected by kaolinite and extensive early calcite diagenesis. P3 and P4 delineate the sandstones in the Cajon Valley and Salton Trough strike-slip basins and are dominated by smectite, mixed illite-smectite, early calcite and late calcite diagenesis. Early calcite cement in P3 and P4 is in lower proportion than in P1 and P2. Although the dissolution of these sandstones by acidic fluids did not have a pattern, it, however, has the most considerable influence on P2 creating moldic pores which are expected to increase pore connectivity. The relatively abundant dissolution pores in P2, together with the absence of late authigenic calcite and illite clay in comparison to the other petrofacies studied are likely to make this sandstone facies the best reservoir targets in the Southern California region. These rocks are analogous to producing reservoirs in the region. However, because, petroleum accumulation in these reservoirs are compartmentalized by early calcite cement, maximum recovery using acidified fluids is recommended to dissolve the calcite-filled pores in order to increase connectivity of their pore network and enhance flow potential.

关键词： diagenesis petrofacies reservoir quality Miocene California