Applied Mechanics and Materials Vols. 416-417

Abstract: As an emerging technology in the field of oil and gas well project, oil and gas well expansion pipe could maximally reduce the hole size decrease resulting from reduced catheter column of the wellbore, so as to achieve the purpose of saving costs. Meanwhile, this technology brings good news to Nerve well drilling in complicated geological condition and improvement of well structure. This article starts from the working principles of expansion pipe, and puts emphasis on the key technologies of expansion pipe and gives a detailed analysis of the application of expansion pipe technology.

Abstract: We should construct a spatial database system for mineral resource reserve in Hebei province based on the database with the application of GIS spatial database technology based on the MapGIS software platform. Combined with the construction process of the database, this paper summarizes the problems and the solutions encountered in the construction of large database, and analyzes some techniques the departments of land and resources often use in basic geographic data to discuss with colleagues to further improve the quality and efficiency of database construction.

Abstract: water injection development is an effective means of tight reservoir to maintain formation energy, and high formation pressure is the basis of reservoir maintain a long-term and stable, therefore, give enough water injection, so as to maintain high pressure is the key to maintain the long-term stability of the reservoir. Liu Maoyuan block Changqing Oilfield is a typical part of tight sandstone reservoir, water injection wells long is not up to the demand of injection, after fracturing, acidizing by invalid injection measures, is not conducive to long-term and stable block. Therefore, research on comprehensive countermeasures of long-term stability of dense oil reservoir. Through the research and development of new antihypertensive drag reduction agent for the overall pressure on block; select suitable for dense reservoir single well stimulation measures and local boosting measures, measures ineffective wells and local abnormal pressure injection is difficult to solve the problem of the cause, to maintain formation pressure. A good result has been obtained by field test, effectively solve the tight reservoir by high-pressure injection resulted in not long-term stability problems, and provides a new idea and reference for solving dense reservoir long-term stability problem.

Abstract: The East China Sea shelf basin, which is a fault subsidence during the Cenozoic Era, locates in the East China Sea continental shelf. In this paper, balanced section technique has been applied to analyzing the differential evolution in the East China Sea shelf basin south of Cenozoic tectonic and summarizing the control factors of tectonic activities on the petroleum accumulation. Our study results will provide essential data and basis for the distribution of the Cenozoic oil and gas and promote the development of the petroleum exploration in the East China Sea shelf basin.

Abstract: Because the petroleum production is larger investment, higher risk, and the traditional risk evaluation tools usually gave an evaluated value only, which being not in accord with the actual, the paper introduces the ideas of Value at Risk into the Human Errors (HEs) quantification for the petroleum operation, and develops the the model of Human Errors at Risk (HEaR) to quantify the HEs. The model can in detail depict the actual risk statuses of production system under different risk conditions.

Abstract: In view of the characteristics of market demands of high-tech products life cycle at all stages, the response time model of the products life cycle at all stages was established according to the differences of products stage response points. Based on this, the production cost/time, transportation cost/time, shortage cost, sales price, and other factors of the products life cycle at all stages were taken into consideration. The 0-1 mixed integer optimization model of multi-factory and multi-distribution center with profit maximization as the optimization objective was established. Particle Swarm Optimization (PSO) algorithm was used to solve the decision variables. Finally, a numerical example was used to illustrate the practical application value of this model.

Abstract: The formation in Wudong area is complex, and oil and gas reservoirs are seriously concealed and very difficult to identify. Thus, to accurately predict the sand bodies by using seismic data, the facies controlled multi-point geological statistical model constrained inversion technology under the isochronous framework is applied. Through a comprehensive explanation on the seismic and geological data, the deposit facies space distribution in the study area is reveled, and then a very stable space variation function is solved in combination with the multi-point geological statistical model analyzed in the developed well. Seismic stochastic inversion constrained by the model is implemented, and its prediction accordance rate of the sand bodies reaches 87.5%, proving the facies controlled multi-point geological statistical model constrained inversion technology under the isochronous framework are only targeted at a few wells, and plays a very significant effect on the area of few wells, uneven distribution, and complex formation evolution. Thus, the model can meet the needs of the oil field exploration and development.

Abstract: In Fuyang oil layer, the later-period structure is complex; the reservoir is mostly composed by river-way sand; the oil and gas reservoir is significantly concealed, so it is greatly difficult to identify. To accurately describe the reservoir, facies controlled reservoir is simulated stochastically using Geocad software in the study area: Lithofacies is first established using Gauss truncation algorithm to construct a facies model of mudstone, dry sandstone, poor sandstone, and sandstone, and its fitting rate is 0.814, and then a porosity model is established using sequential Gauss method under the constraint of the lithofacies model and its fitting rate is 0.814, and its correlation coefficients are as follows: 0.845 is for sandstone; 0.893 is for poor sandstone; 0.915 is for dry stone; a permeability model is established using cloud transformation method under the constraint of the porosity model and its fitting rate is 0.732, and its correlation coefficients are as follows: 0.695 is for sandstone; 0.734 is for poor sandstone; 0.824 is for dry sandstone. These prove that the facies controlled reservoir modeling based on Geocad plays a significant role in the areas where the later-period structure is complex and sand is thin and changed intricately. Thus, the needs of the oil field exploration and development can be fulfilled by the model to a certain extent.

Abstract: Mine dynamic disasters is due to a sudden release of energy by mine engineering disturbed. Shallow-focus earthquake is due to plate movement caused by sudden release of energy. In this paper, on the basis of plate tectonics, geophysical, In this paper, on the basis of plate tectonics, geophysical, through the shallow source analogy is the mechanism of dynamic disaster, earthquake and mine exploration seismic energy result in mine power. The mechanism of disaster analysis seismic energy has the possibility of mine dynamic disaster, combining shallow-focus earthquake and the mine dynamic natural disaster site scheduling, and shallow-focus earthquake and the mine dynamic disasters of space position relations. Analysis in complex geological conditions shallow-focus earthquake geological structure as the first energy transmission medium for mine power disaster role relationship, for the prediction of mine dynamic disaster and the effective prevention and control provides the basis of the production test.

Abstract: The railway passenger volume has an obvious seasonal behavior, and has volatility and instability. The features of it brings a lot of difficulties to forecast the volume in short-term. To investigate the trends and seasonal variations of railway passenger flow, we discuss multiplicative Holt-Winters model as a method. This paper states the basic theory and algorithm of the model, and provides the experimental results by using the data of China railway passenger volume in 2006 to 2010. The result shows the feasibility and effectiveness of the proposed approaches