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Thermal-rheological structure of lithosphere beneath the northern flank of Tarim Basin, western china: Implications for geodynamics

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Science china Earth Sciences 2004年第7期47卷 659-672页

作者： LIU Shaowen1, WANG Liangshu1, LI Cheng1, LI Hua1, HAN Yongbing1, JIA Chengzao2 & WEI Guoqi2 1.Department of Earth Sciences, Nanjing University,Nanjing 210093, china 2.chinese petroleum exploration and development institution,beijing 100083,china 1. Department of Earth Sciences Nanjing University 210093 Nanjing China 2. chinese petroleum exploration Development Institution 100083 Beijing China

Based on the data of geo-temperature and thermophysical parameters of rocks in the Kuqa Depression and the Tabei Uplift, northern flank of the Tarim Basin, in terms of the analytical solution of 1-D heat transfer equation, the thermal structure of the lithosphere under this region is determined. Our results show that the average surface heat flow of the northern flank of the Tarim Basin is 45 mW/m2, and the mantle heat flow is between 20 and 23 mW/m2; the temperature at crust-mantle boundary (Moho) ranges from 514°C to 603°C and the thermal lithosphere where the heat conduction dominates is 138–182 km thick. Furthermore, in combination with the P wave velocity structure resulting from the deep seismic sounding profile across this region and rheological modeling, we have studied the local composition of the lithosphere and its rheological profile, as well as the strength distribution. We find that the rheological stratification of the lithosphere in this region is apparent. The lowermost of the lower crust is ductile; however, the uppermost of the mantle and the upper and middle parts of the crust are both brittle layers, which is typically the so-called sandwich-like structure. Lithospheric strength is also characterized by the lateral variation, and the uplift region is stronger than the depression region. The lithospheric strength of the northern flank of the Tarim Basin decreases gradually from south to north; the Kuqa Depression has the lowest strength and the south of the Tabei Uplift is strongest. The total lithospheric strength of this region is4.77×1012–5.03×1013 N/m under extension, and 6.5×1012–9.4×1013 N/m under compression. The lithospheric brittleductile transition depth is between 20 km and 33 km. In conclusion, the lithosphere of the northern flank of the Tarim Basin is relatively cold with higher strength, so it behaves rigidly and deforms as a whole, which is also supported by the seismic activity in this region. This rigidity of the Tarim lithosphe

关键词： thermal-rheological structure of lithosphere, rheological stratification, geodynamics, Tarim Basin.

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Geological characteristics of large gas provinces and large gas fields in china

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Science china Earth Sciences 2008年第S1期51卷 14-35页

作者： ZOU CaiNeng &TAO ShiZhen Research Institute of petroleum exploration and development,Petrochina,beijing 100083,china Petrochina Res Inst Petr Explorat & Dev Beijing 100083 Peoples R China

Based on the examination of the global researches on oil and gas provinces and large gas fields and the analysis of the features,attributes and distribution of large gas provinces and gas fields,this paper puts forward three indicators of determining large oil and gas provinces:spatial indicator,reservoir-forming indicator and resource *** classifies the gas accumulated areas and large gas provinces in china and analyzes the controlling factors on the distribution of large gas provinces and large gas fields:the lateral distribution is mainly controlled by high-energy sedimentary facies and constructive diagenetic facies,palaeo-highs and their periclinal zones,deep faults,etc,and the vertical distribution is mainly controlled by unconformities,series of evaporates and deep low-velocity highly-conductive beds,*** also reveals the main geological characteristics of large gas provinces and large gas fields in *** gas fields in four-type basins have their own characteristics and onland large gas fields are dominantly developed in foreland basins and craton basins;there are three types of gas sources,of which,coal is the main source with high gas generating intensity and varying origins;reservoir rocks of the large gas fields(provinces)are of various types and dominated generally by low-middle permeability and porosity pore-type reservoirs;structural traps and litho-stratigraphic traps coexist in chinese large gas fields and form dense high abundance and large-area low and middle-abundance large gas fields;most of the large gas fields have late hydrocarbon-generation peaks and reservoir formation,and experienced the process of multiple-stage charging and late finalization; large gas provinces(fields)have good sealing and preservation conditions,and evaporates seals are largely developed in large and extra-large gas *** paper intends to shed light on the exploration and development of large gas fields(provinces)through analyzing their geological

关键词： large gas province large gas field indicator of large oil and gas provinces forming condition distribution characteristics geological feature

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SEVERAL　CONSIDERATIONS　ON　HYDROCARBON　GENERATION　MECHANISM　AND　EVOLUTION　OF　CARBONATE　ROCKS

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石油勘探与开发 1996年第5期23卷 75-80页

作者： Cheng Keming Wang Zhaoyun(Research Institute of petroleum exploration and development, CNPC, beijing, 100083, china)

ＳＥＶＥＲＡＬＣＯＮＳＩＤＥＲＡＴＩＯＮＳＯＮＨＹＤＲＯＣＡＲＢＯＮＧＥＮＥＲＡＴＩＯＮＭＥＣＨＡＮＩＳＭＡＮＤＥＶＯＬＵＴＩＯＮＯＦＣＡＲＢＯＮＡＴＥＲＯＣＫＳ￥ＣｈｅｎｇＫｅｍｉｎｇ；ＷａｎｇＺｈａｏｙｕｎ（Ｒｅ... 详细信息

ＳＥＶＥＲＡＬＣＯＮＳＩＤＥＲＡＴＩＯＮＳＯＮＨＹＤＲＯＣＡＲＢＯＮＧＥＮＥＲＡＴＩＯＮＭＥＣＨＡＮＩＳＭＡＮＤＥＶＯＬＵＴＩＯＮＯＦＣＡＲＢＯＮＡＴＥＲＯＣＫＳ￥ＣｈｅｎｇＫｅｍｉｎｇ；ＷａｎｇＺｈａｏｙｕｎ（ＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｏｆ...

关键词： Marine factes Oil generation of carbonate rocks Mechanism Evaluation Oil-generatingindex Thermal evolution

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Efficient computation of the compositional model for gas condensate reservoirs

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Communications in Nonlinear Science and Numerical Simulation 2000年第4期5卷 141-146页

作者： Jifu ZHOU, Jiachun LI and Jigen YE (Institute of Mechanics, chinese Academy of Sciences, beijing 100080, china The Research Institute of petroleum exploration and development, beijing 100083, china) (Received December 2, 2000) Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China Res. Inst. Petrol. Explor./Devmt. Beijing 100083 China

In this paper, a direct method, unsymmetric-pattern multifrontal factorization, for a large sparse system of linear equations is applied in the compositional reservoir model. The good performances of this approach are shown by solving the Poisson equation. And then the numerical module is embedded in the compositional model for simulating X15(3) gas condensate reservoir in KeKeYa gas field, Northwest china. The results of oil/gas reserves, variations of stratum pressure and oil/gas production, etc. are compared with the observation Good agreement comparable to COMP4 model is achieved, suggesting that the present model is both efficient and powerful in compositional reservoir simulations.

关键词： gas condensate reservoir compositional model sparse matrix

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Neutron and density logging responses to gas reservoir for well-balanced and under-balanced logging:Gas reservoirs of sandstone in a western china field

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Science china Earth Sciences 2008年第S2期51卷 201-206页

作者： WU WenSheng1,XIAO LiZhi1 & ZHANG LongHai2 1 Resource & Information Department,china University of petroleum,beijing 102249,china 2 Research Institute of petroleum exploration and development,Petrochina,beijing 100083,china china Univ Petr Resource & Informat Dept Beijing 102249 Peoples R China Petrochina Res Inst Petr Explorat & Dev Beijing 100083 Peoples R China

Studying the response differences between neutron and density logging of gas reservoir for well-balanced and under-balanced logging will be of significance in evaluation of gas reservoir under the under-balanced condition and application of logging data. With Monte Carlo simulation technique,the paper obtains the relationship between neutron and density logging measurement and borehole di-ameter,porosity or gas saturation for well-balanced and under-balanced logging. The conclusions show that the response trend of under-balanced logging to gas reservoirs agrees with that of well-balanced logging with small borehole,and under-balanced logging data can be used usually as well-balanced logging data. When borehole diameter is large,under-balanced logging data should be corrected for the influences of borehole.

关键词： under-balanced logging density logging neutron logging gas reservoir response

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Curve fitting and optimal interpolation on CNC machines based on quadratic B-splines

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Science china(Information Sciences) 2011年第7期54卷 1407-1418页

作者： ZHANG Mei 1,YAN Wei 2,YUAN ChunMing 1,WANG DingKang 1 & GAO XiaoShan 1 1 Key Laboratory of Mathematics Mechanization,Academy of Mathematics and Systems Science,chinese Academy of Sciences,beijing 100190,china 2 Research Institute of petroleum exploration and development,beijing 100083,china 1. Key Laboratory of Mathematics Mechanization Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China2. Research Institute of Petroleum Exploration and Development Beijing 100083 China

In this paper,curve fitting of 3-D points generated by G01 codes and interpolation based on quadratic B-splines are *** points of G01 codes are selected using an adaptive ***,quadratic B-splines are obtained as the fitting curve by interpolating these feature *** required in implementing the velocity planning algorithm mentioned by Timer et *** very complicated because of the appearance of high-order *** improved time-optimal method for the quadratic B-spline curves is presented to circumvent this *** algorithms are verified with simulations as well as on real CNC machines.

关键词： quadratic B-spline G01 codes feature point velocity planning interpolation

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Contributors and potential of hydrocarbon generation of source rocks by solid-state ^(13)C NMR spectroscopy

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chinese Science Bulletin 1997年第6期42卷 478-481页

作者： WANGZhaoyun, ZHAO Changyi, CHENG Keming and LU Qinghua1. Research Institute of petroleum exploration and development, china National petroleum Corporation, beijing 100083, china:2. University of petroleum, beijing, 100083 china Research Institute of petroleum exploration and development China National Petroleum Corporation Beijing China University of petroleum Beijing China

SOLID-STATE 13C nuclear magnetic resonance （NMR） technique is an effective method to study the texture of material. Under the condition of high magnetic field （400 MHz） and by the application of cross polarization, magic angle spinning （CP/MAS）, total sideband suppression （TOSS）, etc., the content of different textural carbons in kerogen has been quantitatively analyzed by the solid-state 13C NMR spectroscopy of a series of kerogen of thermal simulation samples with Ro value ranging from 0.64% to 1.76%. The results show that

关键词： solid 13C NMR analysis aliphatic carbon potential of hydrocarbon generation of source rocks.

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In situ reproductive organs of Early Cretaceous ferns from Northeast china

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chinese Science Bulletin 1997年第23期42卷 1977-1980,2026页

作者： DENG Shenghui and CHEN Fen1. Research Institute of petroleum and development, beijing 100083 2. china University of Geosciences, beijing 100083, china Research Institute of petroleum and development Beijing china University of Geosciences Beijing China

FILICOPSIDA is a predominant group of the Early Cretaceous floras of Northeast china, whichapproximates 100 species and accounts for more than one third of the floras. The majority ofthis group are of great importance and significance in stratigraphy. The previous studies ofthese ferns are mainly morphological, with only a few concerning the in situ spores andsporangia. In recent years. the authors have carried out a research project on the in situreproductive organs of the Early Cretaceous ferns from/ basins of Inner Mongolia, Liaoning,Jilin and Heilongjiang of Northeast china. The study focuses on 35 species of 17 genera be-longing to 10 families. The present note briefly introduces the results of this study by listingsome representative species.

关键词： Northeast china Early Cretaceous Filicopsida in situ reproductive organs.

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Natural gas geochemistry and its origins in Kuqa depression

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Science china Earth Sciences 2008年第S1期51卷 174-182页

作者： LIU QuanYou 1 ,QIN ShengFei 1 ,LI Jian 2 ,LIU WenHui 3 ,ZHANG DianWei 3 ,ZHOU QingHua 1 &HU AnPing 1 1 Research Institute of petroleum exploration and development,Petrochina,beijing 100083,china 2 Langfang Branch of Research Institute of petroleum exploration and development,Petrochina,Langfang 065007,china 3 exploration and Production Research Institute,SINOPEC,beijing 100083,china Petrochina Res Inst Petr Explorat & Dev Beijing 100083 Peoples R China Petrochina Langfang Branch Res Inst Petr Explorat & Dev Langfang 065007 Peoples R China SINOPEC Explorat & Prod Res Inst Beijing 100083 Peoples R China

According to gas compositional and carbon isotopic measurement of 114 gas samples from the Kuqa depression,accumulation of the natural gases in the depression is dominated by hydrocarbon gases, with high gas dryness(C1/C1-4)at the middle and northern parts of the depression and low one towards east and west sides and southern *** carbon isotopes of methane and its homologues are relatively enriched in 13 C,and the distributive range ofδ13C 1 ,δ13C 2 andδ13C 3 is-32‰―-36‰,-22‰―-24‰and-20‰―-22‰,*** general,the carbon isotopes of gaseous alkanes become less negative with the increase of carbon ***δ13C CO2 value is less than-10‰in the Kuqa depression,indicating its organogenic *** distributive range of 3 He/ 4 He ratio is within n×10-8 and a decrease in 3 He/ 4 He ratio from north to south in the depression is *** on the geochemical parameters of natural gas above,natural gas in the Kuqa depression is of characteristics of coal-type gas *** possible reasons for the partial reversal of stable carbon isotopes of gaseous alkanes involve the mixing of gases from one common source rock with different thermal maturity or from two separated source rock intervals of similar kerogen type,multistages accumulation of natural gas under high-temperature and over-pressure conditions,and sufficiency and diffusion of natural gas.

关键词： Kuqa depression natural gas stable carbon isotope gas origin

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Classification and origin of natural gases from Lishui Sag,the East china Sea Basin

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Science china Earth Sciences 2008年第S1期51卷 122-130页

作者： CHEN JianPing 1,2 ,GE HePing 3 ,CHEN XiaoDong 3 ,DENG ChunPing 1,2 &LIANG DiGang 1,2 1 Research Institute of petroleum exploration&development,Petrochina,beijing 100083,china 2 Key Lab of petroleum Geochemistry,CNPC,beijing 100083,china 3 Shanghai Division,CNOOC,Shanghai 200030,china 1. Research Institute of petroleum exploration & development PetroChina Beijing 100083 China2. Key Lab of Petroleum Geochemistry CNPC Beijing 100083 China3. Shanghai Division CNOOC Shanghai 200030 China

Natural gases discovered up to now in Lishui Sag,the East china Sea Basin,differ greatly in gaseous compositions,of which hydrocarbon gases amount to 2%―94%while non-hydrocarbon gases are dominated by *** hydrocarbon gases,without exception,contain less than 90%of methane and over 10%of C2 + heavier hydrocarbons,indicating a wet *** isotopic analyses on these hydrocarbon gases showed thatδ13C 1 ,δ13C 2 andδ13C 3 are basically lighter than-44‰,-29‰and-26‰, *** difference in carbon isotopic values between methane and ethane is great,suggesting a biogenic oil-type gas produced by the mixed organic matter at peak generation.δ13C CO2 values of nonhydrocarbon gases are all heavier than-10‰,indicating a typical abiogenic *** simulation experiment on hydrocarbon generation of organic matter in a closed gold-tube system showed that the proportion of methane in natural gases produced by terrigenous organic matter in the Lingfeng Formation marine deposit is obviously higher than that in natural gases derived from the aquatic and terrigenous mixed organic matter in the Yueguifeng Formation lacustrine deposit,consequently the proportion of heavier hydrocarbons of the former is remarkably lower than that of the ***, δ13C 1 values of natural gases produced by terrigenous organic matter in the Lingfeng Formation marine deposit are about 5‰heavier than those of natural gases derived from the aquatic and terrigenous mixed organic matter in the Yueguifeng Formation lacustrine deposit whileδ13C 2 andδ13C 3 values of the former are over 9‰heavier than those of the *** the LS36-1 oil-gas pool is the only commercial oil-gas reservoir in Lishui Sag,where carbon isotopic compositions of various hydrocarbon components differ greatly from those of natural gases produced by the Lingfeng Formation organic matter but are very similar to those of natural gases derived from the Yueguifeng Formation organic matter,therefore,natural gases in the

关键词： Lishui Sag natural gas biogenesis abiogenesis lacustrine source rock marine source rock coal-measures source rock

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