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01 February 1998, Volume 19 Issue 1 Previous Issue    Next Issue

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ON MATERIAL BASEMENT AND MIGRATION DYNAMIC OF CRUST-MANTLE HYDROCARBON ABIOGENESIS Zhang Kai 1998, 19 (1):  1-6.  Abstract ( 86 )   PDF (252KB) ( 268 )   Save Material basement and migration dynamic are two essential problems that have to be answered by the crust-mantle hydrocarbon abiogenesis theory.From universe-cosmogony's point of view, this paper demonstrated that hydrogen element and its compounds are abundant in the inner of the earth, which assumes gas, solid, crystal, semimental and mental states in different depth of it.The extrusion and tension resulted from lithosphere plate interaction in different plate boundaries and the crust-pulse-movement from earth solid tide and migration dynamic(static pressure, gravity and hydrodynamics)in sedimentary cap rock of basin are three basic dynamics for hydrocarbon migration in crust-mentle system. References | Related Articles | Metrics

VERTICAL CONFINING MODEL OF FAULT AND ITS STUDY METHOD Fu Guang 1998, 19 (1):  7-10.  Abstract ( 88 )   PDF (183KB) ( 173 )   Save Based on in-depth study on vertical confining mechanism of fault, three geological models were developed, followed by analyzing the vertical confining properties of fault in three different geological conditions by using pressure exerted on fault surface, the ratio between sandstone and mudstone in faulted strata, and difference of interval transit time between filling material of fault and surrounding rock.It was indicated from actural application that these methods are feasible and practicable for these studies. References | Related Articles | Metrics

CHARACTERISTICS OF TEMPERATURE-PRESSURE SYSTEM IN COMPRESSIONAL BASIN Zeng Xianbin, Liu Zhen, Zhang Wanxuan 1998, 19 (1):  11-13.  Abstract ( 157 )   PDF (161KB) ( 210 )   Save Compressional basin is the major petroliferous basin in western China in which generation and distribution of hydrocarbon are controlled by temperature-pressure system that can be classified as thrust-erosion temperature-pressure system of compressional orogenic belt, linear-like temperature-pressure system in shallow layer and hyperbolic-like temperatur-pressure system in deep layer of sedimentary area. References | Related Articles | Metrics

MICROFLUORESCENCE CHARACTERISTICS AND EXPELLING HYDROCARBON PERIOD OF ORDOVICIAN SOURCE ROCK IN TAZHONG AREA Sun Yushan, Yang Fan 1998, 19 (1):  14-17.  Abstract ( 55 )   PDF (263KB) ( 180 )   Save On the basis of microfluorescence characteristics analysis and diagenesis study of carbonate rock in Ordovician in Well Tazhong 12, we found that there are two expelling hydrocarbon periods and higher hydrocarbon-generation potential in Ordovician source rock in Tazhong area, and the first expelling hydrocarbon occurred in early diagenesis stage dominated by heavy hydrocarbon with low maturity, the second one in late diagenesis stage dominated by mature light hydrocarbon.In addition, attemped discussion of the relatios between expelling hydrocarbon time and corresponding tectonic movement has been made, drawing the conclusion that the first expelling hydrocarbon of Lower Ordovician source rock occurred in middle period of Caledonian orogeny;the first expelling hydrocarbon of Mid-Upper Ordovician source rock in about late Hercynian orogeny;the second expelling hydrocarbon of Lower and Mid-Upper Ordovician source rock in Himalayan orogeny till now. References | Related Articles | Metrics

SIMULATION OF ELASTIC WAVE VELOCITY OF ROCK AND ITS APPLICATION IN RESERVOIR FORECASTING Huang Kai, Xu QunZhou, Yang Xiaohai, Lai Zhongkang, Zhang Lufei 1998, 19 (1):  18-21.  Abstract ( 91 )   PDF (238KB) ( 162 )   Save Based on 600 samples data from 25 wells in western Junggar basin, this paper simulated their subsurface state, measured P- and S-wave velocity of rock saturated with water and oil, found the factors affected velocities and the regularity of P- and S-wave change.The log curve calibration, oil/gas prediction and oil-gas-water detection were made by using these velocity data and induced information, a new method was offered for oil exploration. References | Related Articles | Metrics

ORGANIC PETROLOGY STUDY OF JURASSIC COAL SERIES IN JUNGGAR BASIN Wei Hui, Jin Kuili, Zhang Jiyi 1998, 19 (1):  22-27.  Abstract ( 73 )   PDF (196KB) ( 201 )   Save Organic petrology is an important method for studying coal-formed oil.According to microscopic fluorescence and reflection analyses of Jurassic coal series, this paper considered that there is a large quantities of hydrocarbon-generation maceral, most of desmocollinite can shine fluorescence.The hydrocarbon generation characteristics of coal correlates closely with the quantities of hydrocarbon generation maceral. The main organic matter types of Jurassic coal belong in type Ⅱ2, and some in type Ⅱ1.The study on maturity proved that Jurassic coal has reached or exceeded the “oil window” and generated a large number of liquid hydrocarbon, being as an important source rock in Junggar basin. References | Related Articles | Metrics

GEOCHEMICAL CHARACTERISTICS OF MESOZOIC COAL SEAM IN TARIM BASIN Zhu Yangming, Mei Bowen, Jin Diwei 1998, 19 (1):  28-31.  Abstract ( 86 )   PDF (217KB) ( 172 )   Save Mid-Lower Jurassic coal seams are developed in eastern Tarim basin and its peripheral depressions, Triassic coal bed/line occurred in Kuqa depression and some areas of northern Tarim basin, they might be major terrestrial source rocks in Tarim basin.Specific composition and distribution are found in saturated hydrocarbon biomarkers, such as tricyclic terpanes, pantacyclic triterpanes and steranes, and aromatic compounds, showing obvious characteristics of terrestrial higher plant origin and oxidation depositional environment.Abundant alkylcyclohexans and alkybenezes in the samples indicated that bacteria are an important composition in organic matter of coal. References | Related Articles | Metrics

SIMULATION AND CALCULATION OFORGANIC COMPLEX COMPOUND IN OILFIELDWATER, TARIM BASIN Cai Chunfang, Qiu Lirui 1998, 19 (1):  32-34.  Abstract ( 64 )   PDF (157KB) ( 152 )   Save This paper analyzed the stable constant value of acetic acid and metal element complex compound published since late 1980's, discovered that big difference appeared between these data and those from SOLMINEQ.88 software data base, hence modified this data base, and simulated the form of metal-organic acid complex compound with high salinity oilfield water and calculated its content in Tarim basin.The results showed that acetic acid of 16% to 69% occurred in form of Ca, Na, Mg, Sr, Al, K, Fe complex compound, AlAc2 + accounted for 19% to 94 % of total aluminum quantity.And there is a close relation between AlAc2 + content and pH value. References | Related Articles | Metrics

SEVERAL PROBLEMS IN OIL/GAS SEQUENCE STRATIGRAPHY STUDY Qiu Dongzhou 1998, 19 (1):  35-42.  Abstract ( 92 )   PDF (301KB) ( 249 )   Save Oil/gas sequence stratigraphy is a new comprehensive borderline subject developed on the basis of seismic stratigraphy, sequence stratigraphy and petroleum geology.In fact, it is an origin unit analysis techniques of oil/gas sequences in isochronal formation framework.It includes methods of seismic, well log and outcrop sequence stratigraphies and can be applied to study stratigraphy sequences of petroliferous basin combined with computer and simulation techniques, make a stratigraphic correlation and analysis of the source-reservoir-cap assemblage and petroliferous system, and further point out favourable oil/gas exploration areas, specially non-structured petroliferous reservoirs.The basic principle and study method of oil/gas sequence stratigraphy in marine facies petroliferous basin are suitable for transitional and terrestrial facies petroliferous basins. References | Related Articles | Metrics

EVALUATION OF RESERVOIR-CAP ASSEMBLAGE IN NORTHERN TARIM BASIN Ye Desheng, Wang Quangui, Li Guiqing, Wang Hui 1998, 19 (1):  43-49.  Abstract ( 67 )   PDF (362KB) ( 165 )   Save According to the characteristics of reservoir and caprock and their relations, evaluation of continuous and discontinuous reservoir-caprock assemblage in Tabei area and suggestion of the most favourable assemblages in study area to be the combination of Jidike formation as caprock and Suweiy iformation and Upper Cretaceous-Paleogene as reservoi r, as well as the combination of mid-upper member in Kapushaliang group as caprock and lower member as reservoir were made.Moreover, this paper discussed the relations between reservoi r-caprock assemblage and hydrocarbon migration and accumulation, and pointed out that Hercynian and Himalayan movement are two reservoir-forming periods. References | Related Articles | Metrics

CHARACTERISTICS OF CLASTIC RESERVOIR ROCK IN CARBONIFEROUS AND PERMIAN, NORTHERN CHINA Yu Jiaren, Leihuaiyu 1998, 19 (1):  50-53.  Abstract ( 118 )   PDF (192KB) ( 201 )   Save Based on regional geologic information and core analysis data in Suqiao, Wenan area in center Hebei province, this paper discussed the rock types, percolation features and pore structures of clastic rocks in Carboniferous and Permian, and analyzed factors affected the percolation features.It is considered that sandstone reservoir in Carboniferous and Permian are poor in petrophysical property, but are still better reservoirs for accumulating hydrocarbons. The petrophysical property of reservoir may become better if there is weathering denudation in sedimentary discontinuity and developed structural fractures in some area. References | Related Articles | Metrics

STUDYON CALCISILTIC BUILDUP REEFS IN LATE ORDOVICIAN IN LUNNAN AREA, NORTHERN TARIM BASIN XiaoChuantao, Jiang Weidong, Liu Lingshan, LiWeifeng 1998, 19 (1):  54-56.  Abstract ( 68 )   PDF (152KB) ( 193 )   Save Late Ordovician organic reefs composed of cyanophyta and calcareous sponge were firstly discovered in northern Tarim basin.Study showed that they can be classified into algal binding calcisiltic buildup reef and calcisponge-cyanophyta baffling-binding buildup reef.From study of paleoecology of reeef body, recognition of cyanophyta and calcisponge community was made, and their evolution was discussed.The study on their origin and mechanism indicated that the reefs in study area were formed resulted from co-operating of organisms and water power, namely co-operating of algal binding, calcisponge baffling and mechanical depositing, and went through following four stages: colonization, binding, baffling-binding and declination, their evolution was distinctly controlled by the environment. References | Related Articles | Metrics

SPOROPOLLEN FROM SPILLER OF MUD VOLCANO IN DUSHANZI Zhan Jiazhen, Gan Zhenbo 1998, 19 (1):  57-60.  Abstract ( 104 )   PDF (179KB) ( 246 )   Save There are many mud volcanos in southern margin of Junggar basin.This paper analyzed spiller sample from Dushanzi mud volcano, and found its sporopollen assemblage is dominated by angiospern aporopollen with rich gymnospermae sporopollen.The geologic time of sporopollen belongs to mid-late period of Oligocene. References | Related Articles | Metrics

STUDYON THE RELATION BETWEEN FORMATION OIL VISCOSITY ANDWATER DRIVE CURVEMETHOD Chen Yuanqian 1998, 19 (1):  61-67.  Abstract ( 86 )   PDF (339KB) ( 246 )   Save Water drive curve methods of A, B, C and D types are usually used to predict recoverable reserves and recovery factor in water drive oilfields.However, some researchers considered that A,B, C and D types water drive curve method are suitable for oilfields with different formation oil viscosities.The study of this paper indicated that there is no directly relations between different formation oil viscosities and the selection of water drive curve methods. References | Related Articles | Metrics

BASIC PRINCIPLES OF WATER-CUT RAISE IN WATERDRIVE SANDSTONE RESERVOIR, DAQINGOILFIELD Wang Junkui, Zhan Jianfei 1998, 19 (1):  68-70.  Abstract ( 108 )   PDF (177KB) ( 404 )   Save On the basis of monolayer water displacement data and mutilayers water-injection development data, analysis of basic principles of water-cut raise during water-injection development in sandstone oilfield was made by combining with the relation curve of water-cut vs. recovery percent of recoverable reserves in different oil viscosity oilfields, pointing out that high viscosity oilfield with more than 80 % of water-cut is an important stage for oilfield development. Moreover, three basic formulae for regularity of water-cut raise were compared, among which dual logarithm water displacement type curve assumed straight-line segment from low water-cut till high water-cut stages, and can be as a better formula for describing regularity of water-cut raise in oilfield. References | Related Articles | Metrics

APPLICATION OF TRANSIENT TESTING DATA IN STUDY OF RESERVOIR FLOW SYSTEM MODEL—An Example From Zundong Oil Area Wang Guoxian 1998, 19 (1):  71-74.  Abstract ( 69 )   PDF (179KB) ( 216 )   Save Starting with classification of transient testing Horner curve patterns and considering reservoir performance characteristics, this paper made a classification of reservoir flow system and preliminarily determined characteristics parameters and development characteristics of different flow systems.The reservoir flow systems can be classified into three types (pore, dual porosity and fracture flow syatems)composed of five subtypes.Particularly, a combination mode of dual porosity “series-parallel connection” flow system was presented, which has important reference value for either working out the development plan in new oil areas or drawing up the development policy in old oil areas. References | Related Articles | Metrics

NUMERICAL SIMULATION STUDY OF RESERVOIR IN NORTH OF CENTER DISTRICT NO.2, KARAMAY OILFIELD Gu Hongjun, Pan Qianying 1998, 19 (1):  75-77.  Abstract ( 99 )   PDF (187KB) ( 142 )   Save Based on numerical simulation study of water displacement reservoir, determination of the initial conditions for continuous water drive in high water-cut stage was discussed.According to the latest data from 13 wells drilled in pilot area and reservoir engineering methods, the simulation model was corrected to be more suitable for reservoir avalable, and model for continuous water drive was then developed in order to match the performance history of reservoir in high water-cut stage.Based on these, the injection allocation, proration production and development pattern of reservoir were worked out and estimated, thus the optimum project for continuous water drive of reservoir was selected. This simulation study has a directive significance for oilfield development in high water-cut stage. References | Related Articles | Metrics

EFFECT OF WETTABILITY AND PERMEABILITY ON IMBIBITION DISPLACEMENT Fu Xiujuan, Yan Cunzhang 1998, 19 (1):  78-80.  Abstract ( 125 )   PDF (166KB) ( 157 )   Save This paper discussed the effect of wettability and permeability of matrix and fracture on imbibition displacement process by applying COMP simulation software of SSI Co.in USA, and concluded that wettability of rock has obvious effect on imbibition velocity of matrix, that is, the stronger wettability reservoir, the faster imbibition velocity, suitable for production with higher oil recovery rate, so does permeability of matrix on imbibition velocity.But if matrix permeability is low, higher recovery rate is not allowed to use due to its low imbibition displacement velocity.Permeability of fracture has a distinct effect on oil displacement processes of whole matrix-fracture system.If fracture permeability is too high, the whole oil displacement process of the reservoir might be too short, resulting in low recovery factor under unfinished imbibition displacement process of matrix. References | Related Articles | Metrics

THREE-TIME UPS AND DOWNS IN MODERN XINJIANG PETROLEUM INDUSTRY Chen Yanqi 1998, 19 (1):  81-90.  Abstract ( 191 )   PDF (179KB) ( 308 )   Save In Qing Dynasty(1906), a reconnaissance survey for oil shows was made under the leadership of Wang Shudan, chief executive of Xinjiang region, and some oil drilling and production equipments were introduced from abroad, initially starting Xinjiang petroleum industry in Dushanzi area.However, such a effort was ended up with falling of Qing Dynasty.In a period of the Republic of China(1918 ~ 1923), development of oil producing and refining was reorganized by Yang Zengxin, governor of Xinjiang province, but there 's little improvement due to lack of expenditures.In addition, a plant was built up in Wangjiagou area by Pan Zuhuan, a local figure, initiating oil producing and refining industry with a few profits, which made some contribution to the second prosperity of Xinjiang petroleum industry.In the early of 1940s, cooperation between China and former Sovient Union allowed the construction of considerable large-scale oil production management in Dushanzi oilfield, emerging the third period of great prosperity for the industry.Afterwards, because Sheng Shicai, chairman of Xinjiang province at that time, went and sought with the Kuomintang and implemented a policy of counter communism and counter-Soviet Union, followed by a worsened relations with Soviet Union, the oil producing and refining situation in Dushanzi field seemed to be a flash in the pan and moved towards the decline rapidly. References | Related Articles | Metrics