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Application of backflush and micro-flow techniques to the analysis of C5—C13.hydrocarbons in crude oils and its geochemical significance

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Progress in Natural Science:Materials International 2007年第11期17卷 1382-1387页

作者： Wang Peirong1,2, Zhao Hong2,3. Xu Guanjun1,4, Zhu Cuishan2,3. Xiao Tingrong4, Zhang Min2,3.and Zhang Bin1,4(1. key Laboratory of Petroleum Geochemistry, china National Petroleum Corporation, Beijing 100083. china 2. Geochemistry Department of Yangtze University, {3. 43.023, china 3. key Laboratory of exploration technologies for oil and gas resources, ministry of education, Yangtze University, {3. 43.023, china 4. Petroleum Geology Central Laboratory, Research Institute of Petroleum exploration and Development, Petrochina, Beijing 100083. china) key Laboratory of Petroleum Geochemistry China National Petroleum Corporation Beijing 100083 China Geochemistry Department of Yangtze University Jingzhou 434023 China key Laboratory of exploration technologies for {3. and gas resources Ministry of Education Yangtze University Jingzhou 434023 China Petroleum Geology Central Laboratory Research Institute of Petroleum Exploration and Development PetroChina Beijing 100083 China

An Agilent 6890N GC equipped with both FID and Agilent 5975 MSD analyzer has been employed to analyze C5—C13.hydrocarbon fractions of crude oils. A technical combination of program temperature volatilizer injection, backflush and micro-flow controller afforded a fine separation of C5—C13.compounds on a PONA column with the heavy part of crude oils being cut off before entering the analytical column. Both GC-FID chromatogram and GC-MS mass chromatograms (MID and full scan) could be obtained at the same time. The retension time differences of nC6—nC13.alkanes between GC and TIC were in the range of 0.02—0.58 minutes. Totally 286 peaks have been assigned group compositions. Results on 8 typical oil samples from CNPC {3. Laboratory Crude oil Library showed that the characteristics of C6—C13.hydrocarbon group composition could be used in oil-oil correlation studies.

关键词： GC analysis GC/MS analysis backflush micro-flow controller light fraction in crude oil

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Geochemical characterization of aromatic hydrocarbons in crude oils from the Tarim,Qaidam and Turpan Basins,NW china

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Petroleum Science 2010年第4期7卷 448-457页

作者： Zhang Min Paul Philp Department of Geochemistry Yangtze University Jingzhou Hubei 434023 China The key Laboratory of oil ＆ gas {3. and exploration Technology Ministry of Education Yangtze University Jingzhou Hubei 434023 China School of Geology and Geophysics University of Oklahoma Norman OK 73019 USA

Based on the systematic study of aromatic hydrocarbons in over 100 crude oil samples collected from the Tabei and Tazhong uplifts in the Tarim Basin,the western depression area in the Qaidam Basin and the Tabei depression in the Turpan Basin,the geochemical characteristics of the marine（Tarim Basin）,saline lacustrine（Qaidam Basin）,and swamp（Turpan Basin） oils were *** marine oils from the Tarim basin are characterized by relatively low abundance of diaromatic hydrocarbons such as biphenyl and naphthalene,and relatively high abundance of triaromatic hydrocarbons including phenanthrene,dibenzothiophene and *** contrast,the swamp oils from the Turpan Basin are dominated by the highest relative abundance of diaromatic hydrocarbons and the lowest relative abundance of triaromatic hydrocarbons in all the oil samples in this *** relative abundance of diaromatic and triaromatic hydrocarbons in the saline lacustrine oils from Qaidam Basin is between that in Tarim oils and Turpan *** parameters based on the isomer distributions of dimethylnaphthalenes（DMN）,trimethylnaphthalenes（TMN）,tetramethylnaphthalenes（TeMN） and methylphenanthrenes（MP）,i.e.,1,2,5-trimethylnaphthalene（TMN）/1,3.6-TMN ratio,1,2,7-TMN/1,3.7TMN ratio,（2,6-＋2,7-）-dimethylnaphthalenes（DMN）/1,6-DMN ratio,1,3.7-TMN/（1,2,5-＋1,3.7-）TMN,1,3.6,7-TeMN/（1,3.6,7-＋1,2,5,6-＋1,2,3.5-）-TeMN ratio and MP index,may reflect the diversity of organic source input,thermal maturity and depositional *** addition,the dibenzothiophenes（DBTs）/fluorenes（Fs） and dibenzofurans（DBFs）/Fs ratios were found to the very useful and effective in determining genetic types of crude oils for the marine,saline lacustrine,and swamp depositional environments,and for oil-oil correlations.

关键词： china Tarim Basin Qaidam Basin Turpan Basin marine oil saline lacustrine oil coal-derived oil depositional environment aromatic hydrocarbons

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Abnormal high pressure in Kuqa foreland thrust belt of Tarim basin: Origin and impacts on hydrocarbon accumulation

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Progress in Natural Science:Materials International 2006年第12期16卷 1307-1314页

作者： ZENG Lianbo~1** and LIU Benming~ 1,2 (1. key Laboratory of Hydrocarbon Accumulation in china Petroleum University, ministry of education, Beijing 102249, china 2. The Institute of oil and gas exploration and Development, Tarim oilfield Company, Petrochina Company Limited, Korla 841000, china) [a]ministry of education Key Laboratory of Hydrocarbon Accumulation in China Petroleum University Beijing China [b]The Institute of oil and gas exploration and Development Tarim Oilfield Company PetroChina Company Limited Korla China

Following analyses of the abnormal high pressure distribution characteristics, based on the geological characteristics, tectonic stress field and physical simulation, we investigated the formation mechanisms of abnormal high pressure and its impacts on hydrocarbon accumulation in the Kuqa foreland thrust belt. The abnormal high pressure appears at the bottom of the Paleogene and obviously exists in the Triassic and Jurassic. However, the pressure coefficient in the Triassic and Jurassic is lower than that in the Cretaceous and at the bottom of the Paleogene. Horizontally, the abnormal high pressure distribution is characterized by E-W orientation zoning. The maximum pressure coefficient lies in the Kelasu-Dongqiu-Dina tectonic zones in the center of the Kuqa foreland thrust belt and decreases away from the tectonic zones. The formation of abnormal high pressure was mainly related with the intense tectonic compression in the Early Pleistocene time, and tectonic uplifting, undercompaction and hydrocarbon generation were secondary factors contributing to abnormal high pressure. Under the rapid and intense tectonic compression in the Early Pleistocene, the rock framework firstly undertook 1/4 of the compression stress and the other was borne by the pore fluids. Due to the presence of great seal of gypsum-salt or gypsum-mudstone beds in the Paleogene, the pressure of pore fluids increased rapidly and led to the abnormal high pressure in the Kuqa foreland thrust belt. The abnormal high pressure has important impacts on hydrocarbon accumulation. It is one of the necessary conditions for formation of large oil and gas fields in the Kuqa foreland thrust belt.

关键词： abnormal high pressure formation mechanism oil and gas reservoir Kuqa foreland thrust belt Tarim basin.

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Genesis types of the Neoproterozoic Molar tooth structures in the southeastern Jilin and eastern Liaoning provinces and its research significances

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Science china Earth Sciences 2009年第S1期52卷 135-142页

作者： KUANG HongWei1,2,3.JIN GuangChun1,2 & LIU YanXue3.1 Geochemical Department of Yangtze University,jingzhou 43.023.china 2 key Laboratory of exploration {3. for oil and gas resources,ministry of education of china School of Geophysics and oil resources of Yangtze University,jingzhou 43.023.china 3.Institute of Geology,Chinese Academy of Geological Sciences,Beijing 10003.,china 1. Geochemical Department of Yangtze University Jingzhou 434023 China 2. key Laboratory of exploration technologies for {3. and gas resources Ministry of Education of China School of Geophysics and Oil Resources of Yangtze University Jingzhou 434023 China 3. Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

Molar tooth(briefly called MT) carbonate is one of the Proterozoic carbonates with enigmatic sedimentary structure. According to the morphology of MT,it can be divided into two main genesis-morphology types,i.e.,autochthonous and allochthonous,and each type can be further divided into a series of subtypes. The autochthonous MT can be divided into filamentous(MF1) ,ribbon,nodular and dotted type(MF4) ,in which the ribbon one can be subdivided into simple vertical(MF2) and complex ribbon(MF3. ,broken ribbon by storm in situ(MF5) and MT within nodular limestone(MF6) . Allochthonous MT includes conglomerate clasts and horizontal detritus. Studying on the links between MT and the host rocks on five stratigraphic sections in the southeastern Jilin and eastern Liaoning indicates that the morphology of MT is closely related to host rocks,and seven genetic types by relationships between MT and the host rocks with facies interpretations are classified and discussed in this paper. The sedimentary environments of MT formation will be diverse if their morphologies are different.

关键词： Neoproterozoic Molar tooth structure morphology host rocks sedimentary facies southeastern Jilin and eastern Liaoning

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Interpretation models and charts of production profiles in horizontal wells

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Science china Earth Sciences 2009年第S1期52卷 159-164页

作者： GUO HaiMin,LIU JunFeng,DAI JiaCai,WANG Kai & SONG HongWei key Laboratory of exploration technologies for {3. and gas resources,ministry of education of china and School of Geophysics & {3. resources of Yangtze University,jingzhou 43.023.china 1. key Laboratory of exploration technologies for {3. and gas resources Ministry of Education of China and School of Geophysics & Oil Resources of Yangtze University Jingzhou 434023 China

Stratified flow is common for the gravity segregation and flow regimes are very complex because of borehole inclination,therefore,all the conventional production logging tools cannot be effectively applied in horizontal wells,thus significantly increasing the difficulties in log interpretation. In this paper,firstly,the overseas progress in updated integration tools for horizontal wells and production profile interpretation methods has been discussed in brief. Secondly,by means of theory study and experimental simulations,we have obtained the production profile interpretation model and experimental interpretation charts,which have been calibrated by the improved downhole technology and optimization methods. Finally,we have interpreted X-well with the production profile interpretation software designed by us,and it proves that the methods are useful for the production profile interpretation in horizontal wells.

关键词： horizontal well production logging production profile logging instrument simulated experiment interpretation model

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Base level change and depositional filling response of Jurassic in the Qiangtang Basin of Tibet

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Science china Earth Sciences 2009年第S1期52卷 143-151页

作者： ZHANG ShangFeng1,2,ZHANG ChangMin1,HU MingYi1,GONG WenPing1,XIAO ChuanTao1,LIU AiHua1 & Lü Dong11 Remaining resources Research Group of Geoscience College,Yangtze University,jingzhou 43.023.china 2 key Laboratory of {3. technologies for oil and gas resources,ministry of education of china,Yangtze University,jingzhou 43.023.china 1. Remaining resources Research Group of Geoscience College Yangtze University Jingzhou 434023 China 2. key Laboratory of exploration technologies for {3. and gas resources Ministry of Education of China Yangtze University Jingzhou 434023 China

The base level during the deposition of Jurassic in the Qiangtang Basin shows a complete cycle from rising to falling. The base level change is closely connected with tectonic evolution of the basin,especially connected with Bangonghu-Nujiang ocean evolution process in the formation and evolution of the basin. It is also affected by climate. The Jurassic strata correspond to a long-term base level cycle sequence. The sequence is in fact a non-complete symmetrical cycle,consisting of rising hemicycle and falling hemicycle. It can be divided into 6 intermediate-term base level cycle sequences,including 2 carbonate sequences,3.mixture sedimentary sequences of carbonate and clastic rocks and one clastic sedimentary sequence. Depositional filling characteristics during base level change show that Bangonghu-Nujiang ocean spreads in Toarcian-Bajocian ages,and is at the height of spreading of Bangonghu-Nujiang ocean in Bathonian-Oxfordian ages. In that process,sea area became smaller because of the dry climate. Eventually,marine depositional filling is ended with the subduction and collision of Bangonghu-Nujiang ocean.

关键词： Jurassic sequence base level cycle depositional filling response tectonic evolution Qiangtang Basin

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Geochemical study on oil-cracked gases and kerogen-cracked gases (Ⅱ)——Discrimination methods between oil-cracked gases and kerogen-cracked gases

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Science china Earth Sciences 2009年第S1期52卷 10-18页

作者： HUANG GuangHui1,2,ZHANG Min1,2,HU GuoYi3.& XIAO ZhongYao4 1 Department of Geochemistry,Yangtze University,jingzhou 43.023.china 2 key Laboratory of exploration {3. for oil and gas resources,ministry of education,jingzhou 43.023.china 3.Research Institute of Petroleum exploration and Development,Petrochina,Beijing 100083.china 4 Tarim oil Field Branch Company,CNPC,Korle 841000,china

In the processes of discrimination between oil-cracked gases and kerogen-cracked gases,Behar and Pinzgofer et al.'s results were adopted in the former researches,in which the ratio of C2/C3.is basically a constant while the ratio of C1/C2 gradually increases in the course of primary cracking of kerogen. Otherwise in the course of secondary cracking of oil,the ratio of C2/C3.increases rapidly while C1/C2 keeps relatively stable. Our study on analogue experiment shows that,whether it is oil or kerogen,in its process of gas generating by cracking,the ratios of C2/C3.C1/C2 or C1/C3.will all be increased with the growth of thermal conditions. In comparison,the ratio of C2/C3.which is affected by genetic type to some comparatively less extent,mainly responds to the maturity of gases,while the value of C2/C3.is about 2,and that of C2/iC4 is about 10,and the corresponding value of Ro is about 1.5%―1.6%. The influence of gas source on C2/C3.is less than that of gas maturity,otherwise C1/C2(or C1/C3. is obviously affected by cracking matrices. The ratios of C1/C2,C1/C3.of oil-cracked gases are less than that of kerogen-cracked gases,under the condition that the ratios of C2/C3.are similar in value,so are the value of dryness indexes. There exists wide diffidence between this view and the former discrimination method in theory. The analysis of the spot sample indicates that we can apply the above basic view to dealing efficiently with the problem of the discrimination between oil-cracked gas and kerogen-cracked gas.

关键词： Tarim Basin oil-cracked gases kerogen-cracked gases discrimination methods gas composition

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oil and gas potential assessment for coal measure source rocks on absolute concentration of n-alkanes and aromatic hydrocarbons

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Science china Earth Sciences 2009年第S1期52卷 51-58页

作者： ZHAO HongJing1,2,3.ZHANG Min2,3.& WANG ZhiYong4 1 china University of Geosciences,Wuhan 43.074,china 2 Geochemical Department of Yangtze University,jingzhou 43.023.china 3.The {3. Laboratory of exploration technologies for oil and gas resources,ministry of education,Yangtze University,jingzhou 43.023.china 4 Research Institute of Petroleum exploration and Development,TuHa oilfield,Hami 83.009,china 1. china University of Geosciences Wuhan 430074 China 2. Geochemical Department of Yangtze University Jingzhou 434023 China 3. The key Laboratory of exploration technologies for {3. and gas resources Ministry of Education Yangtze University Jingzhou 434023 China 4. Research Institute of Petroleum exploration and Development TuHa Oilfield Hami 839009 China

Absolute concentration of normal alkanes(n-alkanes) and aromatic hydrocarbons in bitumen extracted from source rocks in the period of thermodegradation from Turpan-Hami Basin suggests that aromatic hydrocarbons are dominant in coal and carbargilite while n-alkanes are dominant in mudstones. Bulkrock analysis and gas chromatograph/mass spectrum(GC-MS) of source rocks shows aromatic hydrocarbons are dominant in total ion chromatograms(TIC) of samples with poor perhydrous macerals while n-alkanes are dominant in TICs of samples with abundant perhydrous macerals. The identification of oil-prone and gas prone property based on GC-MS of bitumen "A" together with bulkrock analysis indicates that source rocks from Shengbei area are more oil-prone while source rocks from Qiudong and Xiaocaohu areas are more gas-prone,coinciding with the distribution of oil and gas reservoirs in Taibei Sag. Ratios used to identify oil-prone and gas-prone property for source rocks from Turpan Basin are proposed:n-alkanes >110 μg·mg-1,aromatics 8 for oil-prone source rock bitumen while n-alkanes2 μg·mg-1,aromatics >40 μg·mg-1,and n-alkanes/aromatics gas-prone source rock bitumen.

关键词： oil-prone gas-prone assessment ratio normal alkanes aromatic hydrocarbons absolute concentration Turpan Basin

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马岭油田北三区河流相储层构型综合地质研究

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石油学报 2010年第2期31卷 274-279页

作者：何文祥许雅刘军锋郭玮长江大学地球化学系湖北荆州434023 长江大学油气资源与勘探技术教育部重点实验室湖北荆州434023 中国石油长庆油田公司第二采油厂陕西庆阳751001

依据Miall河流相储层构型理论,综合应用储层地质学、开发地质学和油藏地球化学的基本原理和方法,对长庆马岭油田北三区延101储层构型进行了详细研究。根据Miall构型要素划分方案,将延101划分为河道、废弃河道、溢岸及洪泛平原细粒沉积4... 详细信息

依据Miall河流相储层构型理论,综合应用储层地质学、开发地质学和油藏地球化学的基本原理和方法,对长庆马岭油田北三区延101储层构型进行了详细研究。根据Miall构型要素划分方案,将延101划分为河道、废弃河道、溢岸及洪泛平原细粒沉积4种构型要素,各构型要素间存在复杂的组合关系。具体表现为:多期河道侧向叠加,堤岸砂体位于砂体的边缘,两条河道之间由于侧向侵蚀作用而不发育溢岸沉积;多期河道侧向叠加,在两期河道之间残留堤岸砂体或泛滥平原沉积;两期河道之间堤岸砂体被冲刷剥蚀,大片砂体为河道沉积;河道砂体内发育废弃河道。同一地层单元内,可同时出现上述几种情况。

关键词：河流相储层构型马岭油田油藏地球化学 Miall构型要素地质学理论

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Wave tectono-sedimentary processes in Tarim basin

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Science china Earth Sciences 2005年第11期48卷 1949-1959页

作者： JIN Zhijun1,2, ZHANG Yiwei1 & CHEN Shuping1 1. key Laboratory for Hydrocarbon Accumulation, ministry of education, china University of Petroleum, Beijing 102249, china 2. exploration and Production Research Institute, china Petroleum & Chemical Corporation, Beijing 100083. china 1. key Laboratory for Hydrocarbon Accumulation ministry of education China University of Petroleum 102249 Beijing China 2. exploration and Production Research Institute China Petroleum & Chemical Corporation 100083 Beijing China

Based on the unconformities, the formation times of structures, and geological wave filtering applied to basin fills of typical wells around the Manjiaer area in the Tarim basin, the wave tectono-sedimentary processes in the Tarim Basin are discussed. The results of geological wave filtering of basin fills of typical wells show that, in time domain, the evolution of the Tarim basin was controlled by various wave processes with the periods of 740±Ma, 200±Ma, 100±Ma and 3.±Ma. The analyses of basin fills, basin subsidence and unconformities show that the trends of the sedimentary facies belts, depocenters, and centers of subsidence migrated and interchanged periodically with periods of 200±Ma. These show the propagation of wave movements in space domain. The wave evolution of the Tarim basin is of significance to understanding the formation of the oil and gas reservoirs in the basin.

关键词： Tarim basin, tectonics, sedimentation, crustal undation, wave evolution

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