Journal of Southwest Petroleum University(Science & Technology Edition)

CHARACTERISTICS OF CONDENSATE GAS RESERVOIR OF DAANZAI FORMATION IN BAJAOCHANG

Zhao Hangqing Han Yaowen Xiong yingming

1989, 11(1): 1-11. DOI: 10.3863/j.issn.1000-2634.1989.01.001

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The reservoir space of the shell carbonate is made up of structure crack, tiny diagenesis crack, crystal crack and corrosion pores. The bigger structure cracks which may reservoir a little oil mainly play a part of permeable passage. The tiny diagenesis cracks are mainly the reservoir space of condensate gas. The reservoir rock is characterized by low permeability and porosity, tiny throat, larger surface and affinity for oil. These characteristics have controlled the accumulation and the distribution of oil and condensate gas,and the behaviour of condensate gas reservoir.

STUDY ON SEDIMENTS OF GRAVITY FLOW IN HE FORMATION 3,SHUANGHE AREA BIYANG DEPRESSION, HENAN

Wei Kuisheng

1989, 11(1): 12-27. DOI: 10.3863/j.issn.1000-2634.1989.01.002

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On the basis of researching into the lithology,the sedimentary structure, the log facies and the analysis of grain size, and of applying computer technique, electronic microscope and X-ray diffraction in He formation 3 of Shuanghe area, it is pointed out in this paper that the sediments are deposited by both gravity flow and tractive current. The major sediments are gravity flow deposits. Three kinds of gravity flows, i.e.debris flow, grain flow and turbidity flow, are divided by the main support mechanism of sediments,and depicted the depositional properties of subfacies and their distributed patterns in space.

APPROACH TO THE RELATION BETWEEN CAP-ROCK AND OIL-GAS ACCUMULATION

Shi Baode

1989, 11(1): 28-33. DOI: 10.3863/j.issn.1000-2634.1989.01.003

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Based on the nature of macrocosm and microcosm of the cap-rock, this article systematically illustrates the relation between cap-rock and oil-gas accumulation, and its mechanism under the condition of sealing cap-rock. It is also of certain significance in the evaluation of oil-gas prospecting.

DETECTION OF FAVOURABLE AREA OF GAS ACCUMULATION IN CHUXIOG BASIN

Luo Yongmo

1989, 11(1): 34-38. DOI: 10.3863/j.issn.1000-2634.1989.01.004

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Chuxiong basin is a Mesozoic-Cenozoic sedimentary basin developed on the basis of Upper Triassic Epoch faulting-subsiding basin. Based on the discussion of the developmental history of the basin and on the division and evaluation of tectonic units, this paper has pointed out the exploration prospects of the large gas reservoirs in Chuxiong basin. The more favourable area is in the central section of the depression, where the more favoutable tectonic belt is mouding slope. Huijiguan structure is a key trap of the gas reservoirs.It is proposed in this paper that a scientific reserach well be drilled first there.

DEVELOPMENT OF TRANSMITTING PRESSURE MEDIUM Hg IN PVT HIGH PRESSURE PHYSICAL CHARACTER EQUIPMENT

Zhang Siyong Li Shilun Sun liangtian Qing Huazhong

1989, 11(1): 39-47. DOI: 10.3863/j.issn.1000-2634.1989.01.005

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In this paper two organic compounds have been found to replace mercury as transmitting pressure medium according to the function of mercury and its special requirements in the PVT high pressure physical character equipment.We obtain the compressibility coefficient, temperature coefficient and saturated steam of media ZL-Ⅰ and ZL-Ⅱ from experiment, and compare them with mercury. Then, N2 compressibility factor is measured and compared with the standard value, the result of LHSS and PR-EQS. We find it can satisfy the engineering precision requirements.

A METHOD FOR SELECTING GREY MODELS OF DYNAMIC PREDICTION OF OIL AND GAS FIELDS

Li Dachang

1989, 11(1): 48-57. DOI: 10.3863/j.issn.1000-2634.1989.01.006

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There are six grey models of dynamic prediction of oil and gas fields, but an appropriate model should be selected according to a certain oil or gas field in practice. Starting with the relation degree, this paper has presented a method for selecting a grey model,which could best fit the oil and gas field. And some practical examples have proved the method to be correct. Therefore, the blindness in selecting a grey model can be avoided. On the other hand, the quantitative description of the mutual influence.

IMPROVEMENT ON KILLING WELL CALCULATION

Liu Kai

1989, 11(1): 58-66. DOI: 10.3863/j.issn.1000-2634.1989.01.007

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This paper is mainly about the improvement on the killing well calculation of casing pressure at any depth in hole when there is always mud to circulate before the kick has been detected. By using the mathematical model derived, the calculation in Driller s method has been studied, and relative calculating formulas have been derived. It has been shown that the improved method will accord with the practice more than the conventional "continuous gas column" method.

STUDY ON MECHANICAL CONDITIONS OF CLIMBING CHAIN AND SKIPPING CHAIN IN CHAIN DRIVE

Wang Jun Cui Lan

1989, 11(1): 67-72. DOI: 10.3863/j.issn.1000-2634.1989.01.008

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On the basis of general mechanical analysis, the author has established roller chain gearing equations, put forward for the first time the concept of drive wrap angle and geometry wrap angle in chain drive, and believed that the reason why climbing chain and skipping chain occur is that the drive wrap angle is greater than the geometry wrap angle.

THREE-DIMENTIONAL BUCKLING OF LOWER DRILL STRING WITH MULTI-STABILIZERS IN DERIVATED-STRAIGHT BOREHOLE

Liang Zheng Yuan Xiangzhong

1989, 11(1): 73-81. DOI: 10.3863/j.issn.1000-2634.1989.01.009

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In this paper, we present the calculating model of three-dimentional buckling of lower drill string with multi-stabilizers in beviated-straight borehole. By Laplace transformation,we obtain the solution to the problem. Meanwhile, for the definite design the rules of selecting the string combination and the drilling parameters can be determined according to the condition of drilling straight hole and of corresponding formations by the calculating method in this paper.

TECHNICALLY RENOVATED AND FIELD-USED 6D TYPE FLOODING PUMP

Lu Zihao

1989, 11(1): 82-89. DOI: 10.3863/j.issn.1000-2634.1989.01.010

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Because 6D type flooding pump was low in efficiency, high in consumption of electricity, and short in life, it could not meet the demands of oil-field flooding water. The 6D type flooding pump having been renovated technically, its efficiency has been improved, its life has been prolonged, its function has been bettered, and a lot of energy has been saved. In this paper, the renovating method and experiences are introduced in detail.

SIMPLE METHOD OF SOLVING DUAL INTEGRAL EQUATIONS FOR GRIFFITH-CRACK PROBLEMS

Wang Wei Xiao Fangchun

1989, 11(1): 90-93. DOI: 10.3863/j.issn.1000-2634.1989.01.011

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Based on the solution of Abel s integral equation method to dual integral equations for Griffith-crack problems, a simple method called Form Function Method of solving the dual integral equations is presented in this paper. The concept of this method is clear, and the calculation is very simple.

ON CALCULATING METHOD OF EXTERNAL RATE OF RETURN OF INVESTMENT

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1989, 11(1): 94-103. DOI: 10.3863/j.issn.1000-2634.1989.01.012

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In accordance with the fact that the external of return method of in vestment has not universally been used yet to evaluate the engineering projects in our economic researches, the paper expounds the calculating method and its practicability in engineering investment projects, analyses and compares advantages and disadvantages between the external rate of return and the internal rate of return, and puts forward a proposal that the external rate of return of investment serve as one of the main evaluation methods of technical economy.

POSITION OF MARKET STUDY QUALITY IN BUSINESS MANAGEMENT

Zhang Guangming

1989, 11(1): 104-108. DOI: 10.3863/j.issn.1000-2634.1989.01.013

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On the basis of Dr.J.M.Zuran s quality theory, this paper has expounded the content of the market study and the method of improving study quality. According to the actual situation of China, it has been pointed out that the market study quality is an important part in business management, and it must be valued by the socialist business.

A MATHEMATICAL MODEL OF MONOPHASE FLUID FLOW IN TRIPLE MEDIA

Yao Hengshen

1989, 11(1): 109-111. DOI: 10.3863/j.issn.1000-2634.1989.01.014

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The monophase fluid flow in triple media is considered as Markovian renewal process, and a mathematical model is set up with a new method in this paper.

RESEARCH ON FLOW LAWS OF OIL AND WATER MIXTURE IN SIMULATION EXPERIMENT OF

Liu Shunying

1989, 11(1): 112-117. DOI: 10.3863/j.issn.1000-2634.1989.01.015

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This paper approaches the fundamental law—the slippage velocity between oil and water and the random property of oil and water distribution in the upright flow of oil and water mixture, and analyses the reasons of the errors produced by the "water-finding instrument" in measuring moisture content.

IMPROVEMENT ON ULTRAVIOLET ABSORPTION SPECTROPHOTOMETRIC METHOD IN DETERMINING PETROLEUM HYDROCARBONS IN INDUSTRIAL WASTEWATER

Xue Tingxi

1989, 11(1): 118-123. DOI: 10.3863/j.issn.1000-2634.1989.01.016

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The author tries to simplify the ultraviolet absorption spectrophotometric method in analying petroleum hydrocarbons. The experiments have shown that the transmittancy T of extract solvent petroleum ether can be applied in a larger range, and the dearomatic purification can be simplified or even be omitted. Beinga dehydrating agent, the dehydrated sodium sulfate must be used properly, otherwise a negative derivation would occur. In analysis, the standard oil sample can be replaced by a representative single oil.

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