The West Barents Sea Basin in the Arctic is one of the most promising petroleum basins in the world. With the latest data from the IHS database, this study investigated the petroleum geology of the basin, documented the distribution characteristics of petroleum resources, systematically analyzed the petroleum systems and plays, evaluated the resource potential, and predicted the favorable exploration fairways in the West Barents Sea Basin. The results show that regionally, discovered oil and gas accumulations are mainly distributed in the southwest area of the basin; stratigraphically, oil and gas reserves are mainly confined to the Jurassic and Triassic reservoirs, which host 72.6% and 15.5% of the total proved and probable reserves, respectively. The basin has two known petroleum systems: the Jurassic/Triassic composite petroleum system and the Permian/Carboniferous composite petroleum system. The resource evaluation by the Monte Carlo statistical methodology indicates that the means of undiscovered resources in the West Barents Sea Basin are 487.4×10~6 t of oil, 1375.6×10~9 m~3 of gas, and 84.6×10~6 t of condensate, amounting to 1681.9×10~6 t, of which the gas accounts for 66.0%. Based on the results of resource evaluation and comprehensive analysis of petroleum geology, two favorable exploration fairways were selected: the favorable exploration zone of the Jurassic play and the favorable exploration zone of the Triassic play in the southern area of the basin.

With large power and good power performance advantages, natural gas engine is widely used in many areas at home and abroad, it has the very broad development prospect. In this paper, the composition structure and working principle of gas engine were introduced, the current application of natural gas engine were reviewed, its advantages in driving centrifugal pump were mainly discussed, facing difficulties of application of the gas engine driving centrifugal pump technology for long distance transmission pipeline in China were pointed out. This paper can provide some theory references to further research on natural gas engine driving pump technology.

井筒内的温度分布会影响钻井液性能、钻具应力和井壁稳定等方面,是钻井过程中需要考虑的重要因素.该文以钻井液循环过程中能量守恒为基础,考虑井筒内稳态传热及井筒与地层瞬态传热,建立了井筒温度场控制方程组,然后以注入和返出温度为边界条件,推导得到了井筒温度场的解析解.与Holmes、Kabir及唐林等人推导得到的解析解相比,该文推导过程中没有限定井底钻柱内与环空中钻井液的温度关系,因而得到的解析解可应用于变钻具尺寸、变并身结构及变温度梯度的情况.

Deepwater control mud cap drilling is an advanced technology to deal with thief zone,highpressure and high sulfur-bearing formation,but its drilling hydraulic parameters design and calculation are more complex.According to the drilling process in deepwater,the calculation model of BHP for deepwater control mud cap drilling was established.The guidelines for determining drilling fluid density under different conditions and calculation method of ECD were proposed,based on the analysis of circulating pressure loss,the calculating methods for pump pressure were put forward at subsea and surface respectively.The calculation method of mud cap height was proposed according to the characteristics of wellbore pressure distribution in thief zone,high pressure and high sulfur-bearing formation.Based on the wellbore cleaning rule and the relationship between lost amount and lost pressure differential,the calculation method of sacrificed flow rate was proposed,and hydraulic parameter design process for deep water controlled mud cap drilling was put forward.Based on the basic data of a deepwater well,hydraulic parameters for deepwater mud cap drilling were calculated and analyzed.The results show that the mud cap height is mainly decided by bottom-hole pressure,the density and flow rate have some impact,thus wellbore pressure can be controlled by adjusting the mud cap height.

Based on the research in analysis of typical problems of phase flow in horizontal pipe vibration, two - phase flow simulation equipment and dual - channel data acquisition PL302 test equipment, such as Horizontal gas - liquid flow pipeline are applied to examine a variety of vibration problems. Characteristics and principles of the above vibration problems can be obtained by applying analysis and comparison to the collected vibration signals, which provides basis for further research in vibration feature under this circumstance.

According to the analysis of failure factors about high - sulfur gas pipeline, established a failure accident tree. On the basis of the analysis results, had done the qualitative and quantitative analysis. At last, offered several suggestions to ensure the safe operation of high -sulfur gas pipeline.

简单介绍了光纤传感技术的原理及分类,主要介绍了半导体吸收型光纤温度传感器、光纤Fabry-Perot干涉式温度传感器、光纤光栅传感器的特点及各自的工作原理,并且对近几年来光纤温度传感器的应用进行了介绍.分析表明,随着科学技术的不断发展,光纤温度传感器将在各种工业领域发挥更多更重要的作用.

The reservoirs in sixth sands of Guantao Formation,Gudao oilfield,is a lithologic-structure layered oil pool.The reservoir heterogeneity is serious,and the relation of oil and water is complicate.Since Gudao Oilfield came into the stage of high water cut,the oil layer is waterflooded seriously,the remaining oil is scattered,and hence the research of the reservoir discrimination as an important content of reservoir description becomes more and more important.This article summarized the methods and principle of identifying oil reservoirs by the methods of log parameter cross-plot,logging information multivariate statistics and grey theory discriminatory analysis,and draw up the standard of oil reservoir discrimination.The result of application is basically conformed to that of well testing result,the methods have a great potential of application and practice meaning.

According to statistics,in the world of today,more than three quarters of the oil and gas come from the management improving for hydrocarbon-bearing pool in existence,while less than one quarter comes from the discover of the fresh oil and gas pool.So the urgent matter of the moment is to increase the output of the exploitation hydrocarbon-bearing pool and to increase the rate of the oil and gas recovery,and the key is to study the remaining oil.The reservoir rocks underground are hard to directly be known.The property such as the physical properties of the rocks,the thermo baric field and the fluid property is significantly different,and the laboratory study can not exactly reflect the subsurface picture.Using the simulation model to simulate formation and the distribution of the remaining oil,this can intuitively show the spatial distribution and the evolution law of the remaining oil underground,and supply more reliable materials for the developing of the remaining oil.

Sand production is an important factor affecting productivity of reservoir exploitation. Understanding the mechanism of sand production is meaningful to sand control effectively and choose the rational methods. Through summarizing many examples and literature both home and abroad,the two factors of sand production are geo-factor and engineering factor,further more,in the view of mechanics,the factors can be included shear damage and tension damage. This research has important meaning to further studies on sand production mechanics and improving the craft measure of sand prevention.