This paper has clarified the surface fluid characteristics and main longitudinal physicochemical properties of five reservoirs in Kekeya condensate field, and studied, by using the data of high pressure physical properties, the changes and controlled factors of main parameters of oil, gas and water under the stratum condition in W4~2-W5 capital gas reservoirs being developed at present, and its facies state properties of underground fluids.
According to predecessor's research materials, the chemical characteristics of oil field water in continental sedimentary basin of China are: wide-ranged fluctuation of mineralization degree; obvious ion separation; higher content of sulfates; containing of many miniature elements，such as，I，Br, B etc; positive isotope , negative :and richly accumulated organic materials. The article further points out that the occurence of the chemical characteristics of oil field water is chiefly restricted by different depositional environments and conditions at last, the author approaches the classification of continental oil field water，and believes that it remains to be further discussed that the classification of continental oil field water according to the variation coefficient of ion composite is applied to the west and South-west of China.
This paper summarizes current well testing theory and analysis techniques for fissured reservoirs with double-porosity behavior，which include mathematical models and their analytic solutions and numerical solutions. Based on these solution，a new well testing analysis method and interpretation system are computer-aided presented. Also, the basic structure of the interpretation system is described in the paper.
This paper introduces the results of electricity simulation and mathematical model of finite element method of perforating completion well, analyze the elect of peroration perforation, perforation density and perforation phase on well productivity, and analyzes the arrangement order of relative importance of affecting PR of perforated well. It also introduces calculating software and quanta alive relationship and monograms, Finally，it presents the applied results of optimally selected perforation parameters in the field of North China.
This paper deals mainly with hydrodynamic dispersion. Based on the analysis of the experiment results and the widely used formulas for calculating dispersion coefficients reported in the literatures，two improved methods are presented for determining the coefficients, The relational expression of flow rates and dispersion coefficient has also been developed for similar cores.
The ROP is increased as hydraulic horsepower per square inch of bit is increased. At the same time, the hydraulic end of pumps. the damageable parts of high pressure circulating system，and the expenses of oil fuel are increased while the useful life of equipment and drilling tool is shortened.Therefore, the principle of hydraulic parameter design is that economic profits obtained from the increment of ROP must be equal to or more than those caused by hydraulic horsepower increment.
In this paper，the nodal expansion method of neutron diffusion equation is applied to the computation of flowing field and the nonconforming nodal expansion finite element approximation is set up for solving stationary viscous impressible Navier-Stokes equations. The existence uniqueness convergence of the finite element solution are proved . The numerical test Stokes problem is carried out and satisfactory results are obtained
The optimal allocation model for the production of gas field development is presented in this paper. It is used to optimize the allocation of the production and to make the investment minimum in gas field development. It is applied in gas field，and the satisfactory results are obtained.
By improving RMS method a new unidimensional search (named IRMS method) is presented in this paper. And concrete steps of the algorithm are also given. The results of calculating many examination problem show that the method is efficient，the calculation is correct and the applicability is wide.
The test study of the corrosion fatigue of two new high strength low alloy steels potentials is conducted under different corrosion environments, cathodic stress frequencies. The effect of the above factors on the corrosion fatigue crack propagation rate is described and analyzed in this paper.
Electrical oil submersible pump is one of the mail artificial lift method s in oil-field mid back development stage and has been widely used in mail oil-producing countries. Starting with shaft’s strength and stiffness questions of oil submersible multi-stage centrigugal pumps, this paper approaches the limit setting depth of electrical oil submersible pump using the continuous beams theory under the action of direct compression and lateral load. Finally the 200 m3 D electrical oil submersible pump mad in china is taken for example to show the effect of concerned parameters on deformation and strength of the shaft, and analyze and discuss the main calculation results
In general，the results of treating high residue drilling wastewater by coagulation are dissatisfactory. Based on the experiments，this paper sums up the relationship between the doses of coagulants and the total residues in drilling wastewater，and presents the ways to improve the results of treating high residue drilling wastewater: dilution method and grading coagulation method.
An UPS inverter system is designed in this Paper. The double half bridge structure is used in the main circuit. Inverter output voltage waveform is the sixteen step-waves, The combination of the PWM control with the sequence pulse control is used in the control circuit which can perform the transistors functions of transistors. By using CAD technique, the power transistors are thought of as the ideal switches and used for analyzing characteristics of the magnetic coupling device, By analyzing the effect states and the circuit parameters，the basis is provided for the circuit design.
A Robertson-walker universe coupled to a conformally invariant scalar field is quantized following the canonical formalism for constrained Hamiltonian systems, The exact solution is found to corresponding wheeler-Dewitt equation. It is shown that in the case under discussion the parameter vanishing. The parameter p denotes some factor-ordering ambiguty in the Quantum Gravitational Theory. It is also shown that the extreme value of the scale factor of the universe is the order of planck length.
It has been shown through organic geochemical study that there existfour oil--generating strata:lower Cambrian black grey shales, Permian darkgrey organic limestones and black grey shales, middle Triassic Leikoupoformation dolomites, and Upper Triassic Xu jiahe formation grey blackmudstones and coal beds in the overthrust nappe and its leading edge.Re--servoirs in the area are characterized by low porosity, low permeability,intensive structural damage and poor oil一preserving conditions, but they are still favourable for finding structural or lithostructural oil and gas pools inweakly pressed, completely preserved structures in the frontal zone, suchas the downblock of the south-eastern flank of Tian jinshan anticline，Feng-shunchang protruding anticline.
