Based on a homogeneous reservoir model, with the application of the method of system engineering, a pressure build-up curve can be divided into two sections according to the difference of sensitivity to the parameters charaterized by them.

During hoisting and installing a reactive reprocessor of the 300, 000t/a catalytic cracking equipment of the oil and gas treatment plant in Zhongyuan Oil Field, the reactive reprocessor was suceessfully hoisted and installed in two sections using a mast crane in order to counter the problems caused by the height of the equipment foundation and by the heaviness of the equipment.

A completion string consisted of 3 packers and 2 CMD slide sleeves was used to divide the target interval into two sections. A commingled production test was done with both slide sleeves open by the position switch tool, then only the lower section was tested with the lower slide sleeve closed and an acidizing was applied finally.

So the gradient of pressure decline in vertical well section and deviated well section is different, it aroused the gradient of fluid viscosity in the two sections has differentia.

Daqing sandstone reservoir cores ( 25×60 mm) of permeability to aqueous phase 0.487,1.57 and 2.27 μm 2, respectively,are cut into two sections of equal length and one of them are flooded with polymer 1275 solution of concentration 1 000 mg/L and TSD 918 mg/L at 45℃.

This dissertation can be divided into two sections: the research of technology of pattern recognition of stress wave's signal and the realization of system's software.

Aimed at the inspection specialty of main body and both ends of sucker rod and inspection method based on the loop magnetization, it goes deep into research of effective inspection method for the two sections.

From analysing the characteristics of the abnormality of the radioactive nuclides in two sections in the Erlian Basin,the application effect of the comprehensive methods such as 4He survey, 210 Po survey,TLD survey,gama ray spectrometric survey and ground magnetism survey in explorating oil and gas field is discribed. Then,the models of the abnormality of the radioactive nuclides for several typical oil and gas fields are established.

The main part of the work deals with abstract Higgs bundles; in the last two sections we derive the applications to Higgs bundles valued in a line bundle K and to bundles on elliptic fibrations.

In the last two sections, we review arithmetical characterization of spectra of finite simple groups and conclude with a list of groups for which the recognition problem was solved within the last three years.

A high-voltage switch used in the generator circuit is based on ten IGBT transistors connected in series and operates jointly with two sections of magnetic pulse compression.

The database BiolumBase was designed for the collection and systematization of available information on microorganisms containing bioluminescent systems; it includes two sections: natural and transgenic luminous microorganisms.

Legitimacy of the discrimination between two sections within the genus Eleutherococcus was confirmed.

This paper discusses mainly the convergence and non-uni-queness of an improved automatically matching technique for well testing data interpretationan important interpretation technique in modern well testing. These problems give much trouble in the actual field application of this technique. Based on a homogeneous reservoir model, with the application of the method of system engineering, a pressure build-up curve can be divided into two sections according to the difference of sensitivity to the parameters...

This paper discusses mainly the convergence and non-uni-queness of an improved automatically matching technique for well testing data interpretationan important interpretation technique in modern well testing. These problems give much trouble in the actual field application of this technique. Based on a homogeneous reservoir model, with the application of the method of system engineering, a pressure build-up curve can be divided into two sections according to the difference of sensitivity to the parameters charaterized by them. A new iterative process is used instead of the original one by means of a sectionally matching technique. Both results of theoretical analysis and actual application indicate that this technique will result in an improvement in the convergence and the uniqueness of the solutions. Principlly this idea can be generilized to the automatically matching techniques applied to the interpretation of the well testing data in case of more complicated reservoirs, such as reservoirs with double porosity etc.

A two-dimensional and single-phase reservoir model and afracture model were used to study the performance and predict production in fractured wells. On the basis of prior work,several conditions are considered in simulation, such as variation of fracture conductivity with time, two section conductivities in a fracture caused by tail-in proppant, infinite reservoir and five spot pattern boundaries. Simulated calculation under these conditions was made and corresponding type-curves were drawn up..

In order to replace a bending section of the fractionating tower in catalytical cracking unit and to raise the height of the tower bottom by using a combined section that is, a tower bottom cover and its supporting skirt to replace the old bottom section, a plan of suspending installation with attached high center of gravity was worked out after the neccessary calculation of strength and stability. Replacing of those two sections of the tower was succeeded in the first practice with engineering quality...

In order to replace a bending section of the fractionating tower in catalytical cracking unit and to raise the height of the tower bottom by using a combined section that is, a tower bottom cover and its supporting skirt to replace the old bottom section, a plan of suspending installation with attached high center of gravity was worked out after the neccessary calculation of strength and stability. Replacing of those two sections of the tower was succeeded in the first practice with engineering quality guaranteed.