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Reservoir characteristics and controlling factor of tight sandstone in Shuixigou Group in Taibei depression,turpan-hami basin

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Energy Geoscience 2024年第2期5卷 70-80页

作者： Tong Lin Xuan Chen Fan Yang Hongguang Gou Mingyu Liu Runze Yang PetroChina research institute of Petroleum Exploration&Development Beijing100083China research institute of Exploration&Development PetroChina Tuha Oilfield Company HamiXinjiang839009China China University of Geosciences(Beijing) Beijing100083China

The positive structure belts surrounding the Taibei Sag,turpan-hami Basin,have been the main targets for oil and gas exploration for years and are now left with remaining resources scattering in reservoirs adjacent to source rocks in the sag,where the Shuixigou Group with substantial oil and gas potential constitutes the primary focus for near-source ***,characterization of development and key controlling factors of reservoir space becomes a must for future exploration in the *** study investigates the development traits,genesis,and controlling factors of the Xishanyao and Sangonghe formations in the Shengbei and Qiudong Sub-sags of the Taibei Sag with techniques such as cast thin-section observation,porosity and permeability tests,high-pressure mercury injection,and saturation fluid NMR analysis of reservoir *** findings reveal that the Shuixigou Group in the Taibei Sag consists of lithic *** in the group are mostly poor in terms of physical properties,with undeveloped primary pores dominated by intergranular dissolved pores as a result of a strong *** analysis of key controlling factors of the Sangonghe Formation reveals significant distinctions in sandstone particle size,sand body thickness,genesis and distribution,provenance location,and source rock type between the Qiudong area and Shengbei ***,the coal seams of the Xishanyao Formation exhibit heightened development with shallower burial depth and lower maturity compared to those of the Sangonghe ***,this environment fosters the formation of organic acids,which have a stronger dissolution effect on minerals to develop secondary dissolution pores,and ultimately resulting in better reservoir physical ***,the reservoirs within the Qiudong area of the Taibei Sag demonstrate superior characteristics compared to those in the Shengbei ***,the reservoir physical properties of the Xishanyao For

关键词： Intergranular dissolved pore Organic acid dissolution Secondary dissolution pore Tight sandstone Shuixigou group turpan-hami basin

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Low-mature gases and typical low-mature gas fields in China

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Science China Earth Sciences 2008年第2期51卷 312-320页

作者： XU YongChang WANG ZhiYong WANG XiaoFeng ZHENG JianJing DU HongYu Key Laboratory of Gas Geochemistry Chinese Academy of SciencesLanzhou 730000China research institute of turpan-hami oil field company Hami 839009China

No natural gas pool of industrial importance could be formed at the low-evolution stage of organic matter. In the 1980s, on the basis of the development in exploration practice, the hypotheses of bio-thermo-catalytic transitional zone gases and early thermogenic gases were proposed. The lower-limit Ro values for the formation and accumulation of natural gases of industrial importance have been expanded to 0.3%―0.4%. In the light of the two-stage model established on the basis of carbon isotope fractionation in coal-type natural gases, the upper-limit Ro values have been set at 0.8%―1.0%. In terms of the geological practice in the low-mature gas zones and China's main coal-type gas fields, it is feasible and proper to set the upper-limit Ro value of low-mature gases at 0.8%. Supper-large gas fields such as the Urengoy gas field in western Siberian Basin should belong to low-mature gas fields, of which the natural gas reserves account for more than 20% of the global proven reserves, providing strong evidence for the significance of such a type of resources. The proven natural gas reserves in the turpan-hami Basin of China have almost reached 1000 × 108 m3. The main source rocks in this area are the Jurassic Xishanyao Formation, which occurs as a suite of coal series strata. The corresponding thermal evolution indices (Ro ) are mainly within the range of about 0.4%―0.8%, the δ 13C1 values of methane vary between-44‰ and-39‰ (correspondingly Ro =0.6%―0.8%), and those of ethane are within the range of-29‰―-26‰, indicating that natural gases in the turpan-hami Basin should be designated to coal-type low-mature gases. The light hydrocarbon evolution indices of natural gases also fall within the area of low evolution while the precursor type of light hydrocarbons also shows the characteristics of the coal-type. The geological background, carbon isotopic composition and light hydrocarbon index all provide strong evidence suggesting that the proven natural gases in the turpan

关键词： turpan-hami Basin natural gas low-mature gas humus isotope

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Evolution of Low-Angle Normal Faults in the Enping Sag,the Northern South China Sea: Lateral Growth and Vertical Rotation

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Journal of Earth Science 2019年第6期30卷 1326-1340页

作者： Zhichao Zhou Lianfu Mei Hesheng Shi Yu Shu Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education China University of GeosciencesWuhan 430074China research institute of Exploration and Development PetroChina Tuha Oil Field CompanyHami 839000China Shenzhen Branch of the China National Offshore oil Corporation Shenzhen 518000China

Low-angle normal faults(dip<30°,LANFs)are widespread in the northern margin of the South China Sea where the maximum crust thickness is approximately 30.0 *** on 3 D seismic survey data and drilling wells in the Enping sag,evidences for LANFs that initially formed at high-angles are *** a detailed investigation of extensional fault system and description of 3 D fault geometry,the initial fault dips under the model of distributed vertical simple shear are also *** results indicate that the present-day dip angles of the LANFs are in the range of 12°to 29°,and the initial fault dip angles are in the range of 39°to 49°.Deep seismic imaging suggests that the upper crust in the footwall block of the LANFs was tilted at an angle of ~14°to 22°due to the isostatic rebound during ***,the temporal and spatial sequences of the lateral growth of the LANFs have been investigated by the seismic interpretation of four isochronous stratigraphic interfaces,which demonstrates that two individual fault segments propagated towards each other and subsequently,were hard-linked during the Early Eocene.

关键词： low-angle normal fault fault rotation fault growth Enping sag Pearl River Mouth Basin the South China Sea

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Geochemical characteristics of light hydrocarbons in natural gases from the turpan-hami Basin and identification of low-mature gas

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Chinese Science Bulletin 2010年第29期55卷 3324-3328页

作者： SHEN Ping WANG XiaoFeng WANG ZhiYong MENG QianXiang XU YongChang State Key Laboratory of oil and Gas Resources research Chinese Academy of Sciences Lanzhou 730000 China institute of Exploration and Development Tu-Ha Oilfield Company of China Hami 839009 China

Theoretical and practical knowledge regarding low-mature gasses is of significant importance to identifying potential natural gas *** hydrocarbon parameters and C and H isotopes are useful tools to identify low-mature *** gas samples were collected from the turpan-hami Basin for light hydrocarbon *** results showed that the light hydrocarbon components of natural gases contain high methylcycloxane,high isoparaffin and low *** implies that the gas-generating parent materials are of typical humus type and the paleoenvironment is a fresh water sedimentary *** features are consistent with the geological setting of the *** studies of isoheptane,heptane,and the carbon isotopic compositions of methane in natural gases,and other maturity indices indicated that natural gases in the turpan-hami Basin are dominated by low-mature gas formed during the low evolution stage of Jurassic coal *** parent materials are of type III,and the maturation degree was in the low evolution *** are the fundamental characteristics of low-mature *** of light hydrocarbon research provided further evidence to suggest that the turpan-hami Basin is a large-scale gas producer of low-mature gas in *** is likely that this resource will play an important role in future exploration and development of low-mature gas in China.

关键词：天然气资源地球化学特征吐哈盆地轻烃参数低熟气碳同位素组成鉴定母质类型

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Why Can China Realize the Continental“Shale oil Revolution”?

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Journal of Earth Science 2022年第5期33卷 1324-1327页

作者： Caineng Zou Zhi Yang Guoxin Li Jianzhong Li Xianyang Liu Yong Tang Tao Jiang Yu Yang Xuefeng Bai Songqi Pan Minghui Lu Zhengdong Lei Bo Cai PetroChina research institute of Petroleum Exploration and Development Beijing 100083China PetroChina Qinghai oilfield company Dunhuang 736202China PetroChina Tuha oilfield company Hami 839009China PetroChina Changqing oilfield company Xi'an 710018China PetroChina Xinjiang oilfield company Karamay834000China PetroChina Jilin oilfield company Songyuan138000China PetroChina Southwest oil and gas field company Chengdu610000China PetroChina Daqing oilfield Comapny Ltd. Daqing163712China

0 INTRODUCTION Continental shale oil is a strategic alternative resource to ensure the safety of national oil supply and improve the level of industrial *** is a large country of continental oil resources,accounting for 90%of the total onshore oil resources;and China is also a major producer of continental oil,accounting for about 93%of the total oil production(Yang et al.,2019;Jia et al.,2018).

关键词： Continental shale accounting

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Geochemical Evidence for Coal and Carbonaceous Mudstone as the Possible Major oil Source Rock in the Jurassic turpan Basin, Northwest China

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Acta Geologica Sinica(English Edition) 2012年第5期86卷 1171-1181页

作者： MENG Jianghui ZHANG Min ZHAO Hongjing LIU Luofu WANG Zhiyong ZHOU Jieli WANG Ying College of Geoscience Yangtze UniversityJingzhou 434023China State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China research institute of Petroleum Exploration and Development Tuha Oilfield CompanyPetroChinaHami 839009China

Petroleum geologists have debated whether the hydrocarbons from Jurassic coal measures are derived from the coals, carbonaceous mudstones or coal-measure mudstones in the turpan Basin. Based on the geochemistry analysis of the 20 crude oils and 40 source rocks from the turpan Basin, some data have been obtained as follows： carbon preference index and methylphenanthrene index of the Jurassic oils are 1.16-1.45 and 0.28-0.80, and the ααα C29 sterane 20S/（20S＋20R） and C29 sterane ββ/（ββ＋αα） are 0.44-0.51 and 0.4-0.54 respectively, which show the normal maturity of oils; the vitrinite reflectance of the source rocks from the Xishanyao to Badaowan Formations range from 0.47% to 0.97%, which indicate immature to mature thermal evolutionary stage and sufficient conditions for generating mass mature oil. The effect of hydrocarbon expulsion should be considered when studying the source of coal-derived oil by using Biomarkers. Biomarkers in the Jurassic oils from the basin are similar to those in the coals and carbonaceous mudstones, with a strong predominant content of pristane, relatively high ratio of C15 /C16 sesquiterpenoids （1）, a relatively high content of low carbon number tricyclic terpanes and C 24 tetracyclic terpane, little gammacerane and C 29 Ts detected, an absolute predominant content of C29 sterane and a relatively high content of diasterane. However, the opposite characteristics are shown in mudstones, with an approximately equal content of pristane and phytane, relatively low ratio of C15 /C16 sesquiterpenoids （1）, a relatively high content of high carbon number tricyclic terpanes and a low content of C 24 tetracyclic terpane, peaks of gammacerane and C29 Ts detected obviously and an increasing C27 sterane content. All of these characteristics identify the coals and carbonaceous mudstones as the possible major oil source rocks in this area, and they were formed in the stronger oxidizing environment with shallower water than mudstones.

关键词： biomarker coal-derived oil oil-source correlation coal carbonaceous mudstone mudstone Jurassic turpan Basin

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Differences of Gas Lift Design between Deviated and Vertical Wells and the Analysis of Sensitivity Parameters

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石油天然气学报 2017年第3期39卷 52-60页

作者： Wei Luo Wenqi Ke Ming Yang Yunheng Xu Yongqing Wang Yang Cheng School of Petroleum Engineering Yangtze University Wuhan Hubei research institute of Petroleum Exploration and Development SINOPEC Beijing research institute of Exploration and Development Tuha Oilfield Company PetroChina Hami Xinjiang

尽管气举越来越多地被应用到大斜度井、水平井的举升采油中,但倾斜井气举设计与直井气举设计存在什么差异,这些差异随倾斜角度的增大将怎样变化,以及哪些气举设计所需参数对这种差异比较敏感,即如何对倾斜井气举设计所需参数进行合理选... 详细信息

尽管气举越来越多地被应用到大斜度井、水平井的举升采油中,但倾斜井气举设计与直井气举设计存在什么差异,这些差异随倾斜角度的增大将怎样变化,以及哪些气举设计所需参数对这种差异比较敏感,即如何对倾斜井气举设计所需参数进行合理选择,以便对倾斜井气举设计进行优化的研究较少,这也一直是倾斜井合理气举设计的难点问题。鉴于此,笔者以某油田一口倾斜井为例,通过实测数据进行了倾斜井产能预测方法优选和多相管流压力计算方法优选,然后在该基础上采用等套压降气举设计方法对比分析了倾斜井气举设计与同等条件下直井气举设计的差异,并逐一分析了各种气举设计所需重要参数分别取不同值时气举设计注气深度和产量随井斜角度的变化规律,从而得到了倾斜井气举设计的敏感性参数,可为倾斜井气举设计的参数优化和调整提供参考依据,是倾斜井气举高效生产的有力保障。

关键词：学术期刊石油天然气中国期刊评价学报研制工作项目组

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New equation to decipher the relationship between carbon isotopic composition of methane and maturity of gas source rocks

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Science China Earth Sciences 2021年第3期64卷 470-493页

作者： Jianping CHEN Xulong WANG Jianfa CHEN Yunyan NI Baoli XIANG Fengrong LIAO Wenjun HE Limiao YAO Erting LI PetroChina research institute of Petroleum Exploration&Development Beijing100083China PetroChina Xinjiang oilfield company Karamay834000China College of Geosciences China University of Petroleum(Beijing)Beijing102249China

The identification of the origin and source of natural gas is always a difficult and hot ***,the maturity identification is one of the most important scientific *** empirical equations have been established to decipher the relationship between the maturity of gas source rocks and the carbon isotopic composition of natural ***,these equations proposed often fail to identify the maturity of the source rocks correctly,which in turn prevents the identification of genetic types and source rocks of the natural gas because the petroliferous sedimentary basins in China are complex and diverse,with multiple sets of source rocks and different thermal *** this paper,the oil-associated gas from the Permian lacustrine source rocks and the coal-derived gas from the Jurassic source rocks in Junggar and turpan-hami basins have been investigated to decipher the relationship between the maturity(vitrinite reflectance)of gas source rocks and the carbon isotopic composition of *** equations established areδ^(13)C_(1)=25lgR_(o)-42.5 for oil-associated gas,andδ^(13)C_(1)=25lgR_(o)-37.5 for coal-derived *** new equations are suitable for the maturity identification of source rocks in most petroliferous basins,and favorable for the identification of the genetic type and source of natural gas,which is very important to improve the geological theory of natural gas.

关键词： Natural gas Coal-derived gas oil-associated gas Maturity Carbon isotope of methane Vitrinite reflectance Junggar Basin turpan Depression

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Petroleum　Geology　in　the　Tarim，Junggar　and　turpan－hami　Basins　Showing　Favorable　Conditions　for　the　OccurrenceofLargeandMediumoilandGasfields

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China oil & Gas 1994年第2期1卷 15-19页

作者： Tian Zaiyi Zhang Qingchun(research institute of Petroleum Exploration and Development,CNPC) research institute of Petroleum Exploration and Development CNPC

The frequent upwarping and subsidence,and folding and uplifting of the earth crust caused by the isostatic adjustments and tectonic movements change the types of sediments in the basins frequently,and often cause the occurrence of multi-source formations in the geologic *** in the Tarim basin,during the first transgression in the early paleozoic,the deepest location was the Ordovician sag,in which deep marine clastic and carbonate rocks were deposited and main source rocks were *** the late Paleozoic,it was the second transgression cycle,the thickest sedi-ments of Carboniferous-Permian were deposited in thie Awati sag and southwest sag which would be another major petroleum source rocks(Fig.2).

关键词： Petroleum geology Sediment Basin Source rock Geological Structure Continental evolution oil and gas field

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