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01 September 1991, Volume 12 Issue 3 Previous Issue    Next Issue

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TYPES,SUPERIMPOSED PATTERNS AND EVOLUTION OF THE MESOZOIC TARIM BASIN Yang Kerning 1991, 12 (3):  181-189.  Abstract ( 125 )   PDF (716KB) ( 212 )   Save During Mesozoic,Tarim Basin is a huge petroliferous basin which is characterized by the superimposed sedimentary bodies formed through multiple tectonic phases and basining epoches. The Mesozoic can be vertically divided Into four basining epoches(P.-T, J,K, and K2+1) bounded by tectomc phases,and 10 prototype basins formed.These tosins can be classified into four species (foreland basin .down-warped basin,graben basin and sttike-slip basin) based on boundary conditions for the basin formation at each basining epoch stress field features. Depending on their superimposed positions and patterns,they can also be classified into four superimposed types (multi-superimposed .cross-superimposed, overlap-superimposed and mosaic-superimposed). In Tarim Basin,abundant source beds exist in the Mesozoic and Paleoxoic. With, substancial hydrocarbon traps being developed. Oil generated in the Paleozoic and accumulated in the Mesozoic is the most important style for hydrocarbon accumulation. References | Related Articles | Metrics

PERMIAN SEDIMENTARY FACIES AND PALAEOGEOGRAPHY IN ILI BASIN Hao Jipeng 1991, 12 (3):  190-197.  Abstract ( 164 )   PDF (620KB) ( 281 )   Save Hi Basin is considered as a ctmtinental rifting basin in which sedimentary facies contain volcanic rock, clastic rock,mudstone and limestone through an analysis of 6 sections in Qiongblark,Ining county. During early pre—Permian, the eruption of continental volcanic rocks resulted in the deposition of 3000 m volcanoclastic rocks. In late Permian,a rifting freshwater lake was formed and underwater fan developed. The active lacustrine sedimentation becomes stable*which is benificial f〇T hydiocarbon generation and accumulation. References | Related Articles | Metrics

APPLICATION OF VITRINITE REFLECTANCE,STERANE AND HOPANE ISOMER DATA TO THERMAL HISTORY RECONSTRUCTION OF BASINS Wang Xulong 1991, 12 (3):  198-205.  Abstract ( 77 )   PDF (584KB) ( 260 )   Save The principles and methods of reconstructing the thermal history of basins using vitrinlte reflectance f sterane and hopane isomer data are described in this paper with case analysis of well Aican No.1 in the northwestern margin of Junggar Baijin presented. It is suggested that while some of TTI and Ro reiationships used are not suitable for the well, the thermal history of the well reconstructed using stcrane and hopane data is in good accordance wiih that done using day mineral data and fission scars in apatite by other investigators. References | Related Articles | Metrics

DRIFT CORRECTION IN SYNTHETIC SEISMOGRAMS Wu Jianhua, Wang Xulong 1991, 12 (3):  206-212.  Abstract ( 105 )   PDF (589KB) ( 259 )   Save This paper presents the principle and method of synthetic seismograms using sonig log data, and discusses the drift correction in more detail. By using the drift correction accuracy of the synthetic seismograms is improved. References | Related Articles | Metrics

STUDY FOR MOVING VELOCITY OF CONTEMPORANEOUS FAULT Mu Zhonghai 1991, 12 (3):  212-217.  Abstract ( 102 )   PDF (422KB) ( 294 )   Save Moving velocity of a contemporaneous fault reflects its moving intensity. It is associated not only with thickness difference of the formations in upper and lower walls of the fault within one time unit,but also with the differential References | Related Articles | Metrics

CONDITIONS AND TIMING OF CONVERTING CYCLIC STEAM INJECTION TO STEAMFLOODING FOR SHALLOW HEAVY OIL AND THEIR AFFECTING FACTORS Sun Chuansheng, Zhang Weiming 1991, 12 (3):  217-223.  Abstract ( 90 )   PDF (528KB) ( 249 )   Save Worldwide field applications have confirmed that steamflooding process is one of the effective means for improving" shallow heavy oil recovery. However,steamflooding process is more complicated than cyclic strain injection. The process is limited by reservoir geology and related to the process and time of steam stimulation tsteam quality, well patterns and injection—production strength. A more detailed discussion on conditionst time and its effective factors for steam stimulation—steamflooding conversion is based on an analysis of on—site data frewn Ditrict 9 and stcamflooding pilot areas in Kaiamay Oilfield using reservoir numerical simulation technology. Also, several ways for improving steamflooding efficiency are introduced. Related Articles | Metrics

SIMULATION STUDY OF GAS WELL PERFORMANCE FOR GAS RESERVOIR WITH BOTTOM WATER Zhen Hongyin 1991, 12 (3):  223-228.  Abstract ( 63 )   PDF (394KB) ( 250 )   Save A simulation study of gas reservoir performance with bottom water is carried out by employing the coning model. By means of the sensitlvity analysis production ratio,net pay thickness of gas一bearing formation,aquifer volume, vertical permeability to horizontal permeability ratio,horizontal permeability and gas well penetration are studied. Effects of these parameters on prcduction result of the gas reservoir are obtained, which provides a scientific basis for valid development of the gas reservoir with bottom water. References | Related Articles | Metrics

METHODOLOGY FOR EVALUATION OF FORMATION DAMAGE AND PRODUCTIVITY IN THE NORTHWE-STERN MARGIN OF JUNGGAR BASIN Yang Shengzhen, Shan Shouhui, Han Xiaoping 1991, 12 (3):  229-235.  Abstract ( 68 )   PDF (489KB) ( 221 )   Save This paper presents a methodologv of how to various dat to evalate torniadn drimage and productivity in the northwestern margin of Junggar Easin. it is pointed our that analylical methods of well test, production history and single well history have wide applicability in the evaluation of formation damage. A new methodology is proposed to evaluate reservoirs using production rate predicting method, which is indicated to be feasible from the field data. Related Articles | Metrics

APPLICATION OF STATISTICS TO THE CLASSIFICATION OF RESERVOIRS IN KARAMAY OILFIELDS Liu Shunsheng, Sun Lixia 1991, 12 (3):  237-242.  Abstract ( 68 )   PDF (416KB) ( 180 )   Save Taking 183 sand units in Karamay oilfields as specimen,7 parameters of reservoir characteristics are detdermined as bases for the classification by using correspondence analysis and cluster analysis in this paper. Many classi fication projcts were proposed. Combined With the specialists,the best classification system was formed, In the paper,characteristics and distribution of each type of reservoir were also discussed. References | Related Articles | Metrics

CHARACTERISTICS OF RESERVOIR PORE STRUCTURE IN KEKEYA CONDENSATE GAS FIELD Li Yude 1991, 12 (3):  243-249.  Abstract ( 86 )   PDF (1155KB) ( 174 )   Save The characteristics of pore structure for ihe major reservoir in Kekeya Condensate Gas Field are studied in this paper,based on thin section and petrophysical data from the wells Ke 233 and Ke 30,and X--ray diffraction and SEM data from other wells . The author indicates that the formation under X8 section of Xihefu group is of no value for exploration,since it is in the later period of late diagenesis and the secondary pore volume is greatly reduced. Related Articles | Metrics

CHARACTERISTICS AND DISTRIBUTION OF ZEOLITE GROUP MINERALS IN KARAMAY OILFIELDS Sun Yushan, Cao Ziqiang 1991, 12 (3):  253-259.  Abstract ( 75 )   PDF (1078KB) ( 358 )   Save Using modern analysis methods,a great number of complex zeolite group minerals arc identifled in details,and their lateral and vcrical distribution summarized. The authors suggest that formation of the zeolites is mainly due to alteration and hydration of the volcanic materials,and also due to the buriaJ and thermal histories. References | Related Articles | Metrics

A NEW METHOD OF RAPID DETECTION TECHNOLOGY FOR OIL AND GAS—BEARING STRATA DURING DRILLING PROCESS—AN INTRODUCTION TO OSA AND P—K INSTRUMENT FIELD APPLICATIONS Chi Kaihong, Lei Zhenming 1991, 12 (3):  262-268.  Abstract ( 118 )   PDF (488KB) ( 153 )   Save This paper emphatically desciibes the testing applications and results of EBH' s rapid oil show analyser (OSA) and porosity—permeability analyser (p—k) following a brief introduction to their operating principle and flowchart. Having summarized and analysed from the testing results,it is considered that these instruments can rapidly provide a great deal of geologic informations. These can meet the requirements for drilling exploration, and also the suggestions for further understanding and improvements are presented based on authors' field applications. Related Articles | Metrics