Journal of Southwest Petroleum University(Science & Technology Edition)

PERMIAN AND TRIASSIC CONODONT COLOUR ALTERATION AND ITS PETROLEUM GEOLOGICAL SIGN下ICANCE IN GUIZHOU PROVINCE

Zhou Xi-yun

1985, 7(3): 1-13. DOI: 10.3863/j.issn.1000-2634.1985.03.001

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This paper deals with the colour alteration of Permian and Triassic
conodonts in Guizhou Province.According to the sequence of the colour
alteration index of conodonts，it can be divided into several grades of CAI
from 1.5 to 5.The distribution of CAI isograde lines of Upper Permian
and Lower 'Triassic in the CAI isograde maps shows a"X"shape (see Fig.
12)，and m ay be divided into four different CAI value areas.These area
correspond to the to w or high value areas of the vitrinite reflectance
respectively.(See Fig.3)"This paper discusses the calculation of paleogeotem perature，paleogeother-mal gradient and primitive depth of burial by means of CAI.It is thought that the result of calculation of tem perature is a little lower，but can be corrected according to the corresponding relation betwxen the colour alteration index and the vitrinite reflectance.
The field data and the result of calculation show that the medium or
high CAI value area is directly related to the larger primitive depth
of burial and the higher paleogeotherm al gradient，and the low CAI value
area to the less primitive depth of burial and the lower paleogeothermal
gradient.This paper also discusse、tie corresponding relation between CAI valueand hydrocarbon occurrence.

ANALYTICAT STUDY OF UNSTEADY AND NON-DARCY HIGH-SPEED ELOVV THROUGH MULTIPLE MEDIUM IN COMPOSITE RESERVOIRS

Feng Wen-guang Ge Jia-li

1985, 7(3): 14-27. DOI: 10.3863/j.issn.1000-2634.1985.03.002

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This paper has revised Forchheimer Equation by dividing the curve into two segments linearly,established mathematical models of unsteady and Non-Darcy high-speed flow through porous medium, double medium and triple medium in composite reservoirs,and gained their solutions and their corresponding long time asymptotic solutions. The unsteady Darcy flow and the Darcy flow in composite reservoirs through porous medium, double medium and triple medium are special cases of their own.

It is realized from long time asymptotic solutions that there are two steps at the pressure curve of triple medium，one step at the
pressure curVe of double medium，and no step at the curve of
pressure porous medium.The pressure curve will become T一shaped when the production of oil well is very- high.

NUMERICAL SIMULATION OF GAS-CONDENSATE RESERVOIRS

Li Yun Ge Jia_li

1985, 7(3): 28-42. DOI: 10.3863/j.issn.1000-2634.1985.03.003

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T his paper describes a new method for simMating gas-condensate
reservoirs numerically.The sim ulator accounts not only for retrograde
condensation and vaporization of condensed liquid，and for arbitrary
field shapes, well patterns and heterogeneities as w ell.Because
formulation of the simulator is based on a formation volume factor， 0r
the Beta-type analysis which has analogy to that used in a conventional
black-oil simulation model，it is of comparable computational simplici-
ty and efficiency. Finally, some examples of the application of the
method to an actual gascondensate field are given in this paper.

THE EXPERIMENTAL STUDY OF THE FRICTION—WEAR PROPERTY OF HIGH-CHROMIUM CAST IRON AND PERBUNAN RUBBER

Peng Sheng-shang Yang Qi-ming

1985, 7(3): 43-52. DOI: 10.3863/j.issn.1000-2634.1985.03.003

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1'he effect of different hardness and surface finish of the friction sur-
face of drilling pump on its friction—wear property under abrasive wear
is mainly dealt with in this paper with the purpose of finding out the
optimum match for the friction surface with proper hardness and surface
finish according to technical and economic considerations.Fight tests for
the testing rings，;which are made of high—chromium cast iron with differ-
cnt hardness and surface finish，rubbing against the testing blocks，which
are made of Perbunan Rubber with different hardness，are carried out on
MLD—10 dynamic abrasive machine.More than 500 data are obtained，and
a nuwbex of interesting phenomena are also discovered.On the basis of
-tlisr the—gararneters for. designing liners and piskpns are pre-seteH in thus paper.

THE APPLICATIdN OF FUZZY COMPREHENSIVE ESTIMAT旧N IN OILFIELD GEOLOGY

Zhou Nang-xiang CaiZheng-qi Wang Shou-ching He Zu-rong

1985, 7(3): 53-64. DOI: 10.3863/j.issn.1000-2634.1985.03.005

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This paper consists of two parts.One part is that the reservOirs of
VII oil group of Hsmember in Shuanghe oilfield have been estimated by
means of five mathematical models of Fuzzy Comprehensive Estimation
in search of their applied effects.The effect of model III is considered
best.The other part is that the single factor esimation is made in
this paper to build a relational matrix by building subordinate function
Ii or multiple estimation factors tW0-grade，even multigrade，tom-
prehensive estimation is made after their being divided into groups.

ON FUNDAMENTAL SOLUTION OF UNSTEADY FLOW EQUATION FOR THE GAS PIPELINE WITH CONCENTRATED GAS OUTPUT

Jiang Mao-ze Zeng Zi-qiang

1985, 7(3): 65-73. DOI: 10.3863/j.issn.1000-2634.1985.03.006

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With the help of the conception of fundamental solutions，this paper
gives three kinds of fundamental solutions of unsteady flow equation
for the gas pipeline with concentrated gas output，and constructs the
general expressions of three kinds of complex problems, This method is easy and the computational algorithms are simple.It can be applied to some more complex and general problems.Meantime,we have also corrected some errors in reference literature(1).

AN EASIER METHOD OF MEASURING CURRE POINTS OF FERROMAGNETIC MATERIALS

Wang Yu-qin Tang Fu-rong

1985, 7(3): 74-81. DOI: 10.3863/j.issn.1000-2634.1985.03.007

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An easier method of measuring Curre Points of ferromagnetic materials has been presented through an experiment. Its principle is to observe the disappearance of the magnetic hysteresis loop. This method has the advantages of vividness, intuition, and accuracy over other methods, and the appartus used is simple and easy to operate. The results obtained from measuring the value of iron and nickel show that the error is within 2 centigrade compared with that in the literature.

A STUDY OF DISPERSIONRELATION BY USING A MICROCOMPUTER

Luo Xian-chun

1985, 7(3): 82-88. DOI: 10.3863/j.issn.1000-2634.1985.03.008

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The characteristic of normal dispersion relation in the range of vissible light is studied by means of microcomputer, and a relation of the variation of refractive index with the wave length of incident light is obtained in this paper. The result is of important real significance to further understanding the interaction of light and substances and solving some practical problems with the help of this relation

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