石油实验地质

ONCE MORE DISCUSSION ON THE MIDDLE JURASSIC MARINE-FLOODING EVENT DEPOSITION OF THE TARIM BASIN

Chen Ronglin

1995, 17(4): 311-315. doi: 10.11781/sysydz199504311

Abstract(546) PDF-CN(305)

Abstract:
This paper mainly discusses the Middle Jurassic marine-flooding event the Tarim Basin. Based on the factual materials.the southwestern Tarim and Kuqu de-deposition of pressions are suggested to be in varying degree influnced by marine-flooding during the late Middle Jurassic. The event has an important significance in evaluating the Jurassic hydrocarbon resource of the Basin.

EXTENSIONAL PATTERN AND DYNAMIC PROCESS OF THE CENOZOIC RIFTING BASIN IN THE BOHAI BAY

Qi Jiafu, Zhang Yiwei, Lu Kezheng, Yang Qiao

1995, 17(4): 316-323. doi: 10.11781/sysydz199504316

Abstract(757) PDF-CN(730)

Abstract:
The Bohai bay Basin is a Cenozoic rifting one.Based on a synthetic study of the litho-spheric structure and basinal tectonic characteristics of the basinal area,the extensional deformation of the continental lithosphere can be interpreted as a double or muliple layered extensional pattern, which is dominated by simple shear extensional deformation in the upper part and pure shear extensional deformation in the lower part. Thermal action withinthe mantle is a major factor which controls thc dynamic process of rifting extension in thebasinal area, as shown by the "event" sequences of the tectonic evolution proces,in thebasinal area. Nevertheless, the strike-slip of the deep fault is driven by regional stressfield formed by plate boundary effort transferring to the basinal area.

THE MESOZOIC GROUP AND ITS RELATIONSHIP WITH HYDROCARBON EXPLORATION IN THE EASTERN HEBEI PROVINCE

Zhang Shen

1995, 17(4): 324-333. doi: 10.11781/sysydz199504324

Abstract(496) PDF-CN(422)

Abstract:
The Mesozoic group in the Eastern Hebei Province was mainly studied in this paper.The classification,correlation and time of the Mesozoic stratigraphy were discussed to establishing the stratigraphic sequence. The generation,accumulation factors of hydrocarbon and the distribution pattern of oil and gas pools in this area were studied. There by aproposal for oil and gas exploration was suggested.

THE CHARACTRISTICS OF THE UPPER JURASSIC─LOWEKR CRETACEOUS SEQUENCE STRATIGRAPHY AND THEIR SIGNIFICANCE IN HYDROCARBON EXPLORATION IN THE SOUTHERN SONGLIAO BASIN

Yang Changqing

1995, 17(4): 334-342. doi: 10.11781/sysydz199504334

Abstract(505) PDF-CN(321)

Abstract:
In using of the basic concepts and research method of sequence stratigraphy,the Upper Jurassic-Lower Cretaceous sequences were preliminarily divided into four sequences according to seismic section and well data,each of which consisted of three system domains.The sedimentation of the domains and distribution of the lithofacies were mainly controlled by structural subsidence,while influnce of water level changes subsidiary.Meanwhile,two kinds of sequence stratigraphic frameworks were established.The faulted basin with Shiwu type(faulted depression)of strtigraphic framework has a favorable combination of generation, reservoir and seal of hydrocarbon,showing a good potentiality ofoil and gas resources.

A DISCUSSION ON THE GENETIC MODEL OF CRACK SYSTEM IN THE PERMIAN CARBONATE ROCKS OF SICHUAN PROVINCE

Fan Shengli, Tong Chongguang

1995, 17(4): 343-350. doi: 10.11781/sysydz199504343

Abstract(477) PDF-CN(257)

Abstract:
The authors proposed a genetic model of crack system of the Permian carbonate reservoirs of the Sichuan basin. The model shows that structural fractures were developed inthe dense carbonate rocks due to tectonic activity, then the fractures were dissolved and enlarged,and various secondary pores,cavities and cracks were formed and connected with each other, generating a crack system with the function of reservoir and permeability for fluid flow. The crack system can continuously be reformed and may be filled during the long tectonic activity and diagenesis. The present valid crack systems are the final result of multicycle tectonic movements and diagenesis. Their distribution is regular and anisotropicor probabilistic.

CHARACTERISTICS AND CLASSIFICATION OF THE MIDDLEAND LOWER TRIASSIC CARBONATE ROCK RESERVOIRS IN THE CHISHUI AREA OF GUIZHOU PROVINCE

Ye Sujuan

1995, 17(4): 351-356. doi: 10.11781/sysydz199504351

Abstract(745) PDF-CN(306)

Abstract:
The characteristics of carbonate rock reseryoirs of Leikoupo Fm. and Jialingjiang Fm. of the Middle and Lower Triassic was mainly studied in the Chishui area,Guizhou.Thelower limit of the reservoirs was determined by prodiuction-coefficient-method.The reservoirs were classified into four levels based on the integrative characteristics of their lithology, physical property, pore texture and rese rvoir lower limit.Most of the reservoirs in thearea are located in the second and the third class,which are reservoirs of crack-pore type.

THE EARLY GENERATION OF OIL FROM SALINE LAKE FACIES

Zhang Guofang, Wu Deyun, Ma Jinyu

1995, 17(4): 357-366. doi: 10.11781/sysydz199504357

Abstract(605) PDF-CN(308)

Abstract:
Based on the simulation of generation and expelling of hydrocarbon in the source rocks of muriate saline and carbonate sediments in the saline lake facies,and combining with immature oil exploration practice of the salt-bearing basins in the Eastern China,the authors discussed the early genenration and migration mechanism of oil the saline lake facies.

AN APPLICATON OF WELL LOGGING INTERPRETATION OF CARBONATE ROCKS IN THE CALCULATION OF RESERVES OF THE NORTHERN TARIM

Wei Liling, Fan Zhengjun, Wang Qian, Jin Yizhi

1995, 17(4): 367-371. doi: 10.11781/sysydz199504367

Abstract(540) PDF-CN(330)

Abstract:
On the basis of the actual well log data of carbonate oil and gas pools of the Northern Tarim and the rules for calculating reserves of oil and gas pools, integrating the interpretation of carbonate crack reserviors with synthetic crack-probability method determinating crack zones,the authors discuss the reservoir parameters and contents for calculation of reserves and acquires a satisfactory result.

SIMULATION EXPERIMENTS OF HYDROCARBON-EXPELLING OF SOURCE ROCKS AND APPARENT OIL-EXPELLONG EFFICIENCY OF THE TARIM BASIN

Wang Zhenping, Zhao Xigu, Fu Xiaotai Lu Shuangfang, Qu Jiayan

1995, 17(4): 372-376. doi: 10.11781/sysydz199504372

Abstract(591) PDF-CN(349)

Abstract:
Based on the simulating experiments and calculated results of multivariant gas-liquid balance sitnulation,the geochemical characters and hydrocarbon-generating processcs of samples and the influnce of experimental temperature on oil-expelling efficiency were analysed.The authors recognized that oil generation was a main motive force for oil-expelling;thermal evaporation was a major factor resulting in a false apparent oil-expelling efficiency in the thermal pressure oil-expelling experiment.On this hasis,a confidence index for quantitative evaluation of experimental oil-expelling efficiency and a reasonable calculating method of apparent oil-expelling efficiency were suggested.

CHARACTERISTICS OF ORGANIC MACERAL MATURITY AND EVALUATION OF COAL-RELATED HYDROCARBON PHASES

Wu Jun

1995, 17(4): 377-383. doi: 10.11781/sysydz199504377

Abstract(535) PDF-CN(270)

Abstract:
ksed on the distribution of reflectances of main macerals of coal,the formation of hydrocarbon in coal and the phases of coal-related hydrocarbon were evaluated.There is certain correlation between the evolution of optical character of organic maceral and the generation of oil and gas,and hydrocarbon-generating phases can be evaluated in terms of their composite characters. In this paper,the author detailed the coal-related hydrocarbon of the Longtan coal-bearing series of the Nantong Coal field, Southern China.

PEOTOMETRIC CHANGES AS A METBOD TO EVALUATE THE HYDROGEN-RICH TYPES OF VITRINITES

Wang Feiyu, He Ping, Fu Jiamo, Liu Dehan, Zhao Shiqing

1995, 17(4): 384-393. doi: 10.11781/sysydz199504384

Abstract(639) PDF-CN(273)

Abstract:
Based on the detailed photometric analytical results of vitrinite photometric changes in the coals and hydrocarbon source rocks of China,the interrelations of the characteristics ofvitrinite photometric changes and coal ranks(maturity)to vitrinite types are established,and the forms and ranges of photometric changes are suggested as a new method to evaluate the hydrogen-rich types of vitrinites. In oil windows or during the bituminizationstage, clear positive photometric changes are features of hydrogen-rich vitrinites, displaying obvious increases of fluorescence intensity and "yellowward shift" of fluorescence spectra to short wavelength. The clear positive photometric changes of hydrogen-rich vitriniteshave something to do with the higher contents of flow facies among them. Using the features of vitrinite photometric changes to distinguish the types of vitrinites has importantsignificance in coking blend, the evaluation of hydrocarbon source rocks in coals and terrigenous orgnic mass and the restraint correction of vitrinite reflectance.

THE APPLICATION OF COMPREHENSIVE GRAVITY METHOD TO THE EVALUATON OF HYDROCARBON RESOURCE OF THE SANSHUI BASIN

Zhong Huizhi, Wang Yixin, Fan Taiyong

1995, 17(4): 394-401. doi: 10.11781/sysydz199504394

Abstract(565) PDF-CN(292)

Abstract:
In the light of comprehensive geophysical method,the authors indicate that the San-shui basin is a fault one controlled by faulting.The basement of the basin consists of three depressions and four uplifts,There are three kinds of different lithologies-the Sinian metamorphic rocks,the Paleozoic clastic rocks and the upper Paleozoic and Mesozoic clastic rocks and limestones,Baoyue and its surrounding are the most favorable area for oil andgas accumulation,and the southern depression of the basin is a beneficial area for exploration.

A NEW METHOD FOR DETERMINING HUMIDITY──WILHELMY DYNAMUIC PLATE METHOD

Ma Yonghai

1995, 17(4): 402-405. doi: 10.11781/sysydz199504402

Abstract(693) PDF-CN(243)

Abstract:
Wilhelmy dynamic plate method is a new way to determine humidity.It determines adhesive force(attached power),which can directly be compared with other forces of oillayer. Thus,humidity can be used in oil pool evaluation taking the form of forces.

A QUANTITATIVE DETERMINATION OF SR AND BA IN SILICATE ROCKS BY SPECTROMETRY

Li Youfa

1995, 17(4): 406-407. doi: 10.11781/sysydz199504406

Abstract(518) PDF-CN(238)

Abstract:
Aquantitative determinatiom of rare Sr and Ba in silicate rocks and muddy sourcerocks by atomic emission spectro metry(AES) was suggested. Based on various test underdifferent conditions,the experiment method process as well as the spectral-line pairs andmeasurement rang were determined.

1995, 17(4): 408-408. doi: 10.11781/sysydz199504408

Abstract(614) PDF-CN(186)

Abstract:

1995 Vol. 17, No. 4

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