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Journal of Hydrodynamics 2007年第6期19卷 671-676页

作者： YUAN Ai-wu CUI Hai-qing GAO Tao Management institute Tianjin University Tianjin 300072 China Department of petroleum Engineering Daqing Petroleum Institute Daqing 163318 China Daqing Exploration and Development institute Daqing 163712 China

The governing equation, together with the formulas of the averaged flux and the stability parameter for Newtonian fluid flowing in eccentric annulus via the axial reciprocation of the inner tube was established in the bipolar coordinate system. Numerical calculation was conducted for the measurement of water flow using the formulas above, of which the results agree well with the experimental data. It is shown that the flow instability can be induced by the increase of the stroke, the frequency, and the eccentricity of annulus, making the sucker rod more susceptible to partial abrasion. Some protecting methods, including adding centralizers, adjusting the stroke and frequency, are proposed to protect the sucker rod from the partial abrasion, and satisfactory results have been achieved in the oilfields.

关键词： eccentric annulus axial reciprocation flow stability partial abrasion

Distribution and fractionation mechanism of stable carbon isotope of coalbed methane

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Science china Earth Sciences 2006年第12期49卷 1252-1258页

作者： QIN Shengfei1, TANG Xiuyi2, SONG Yan1 & WANG Hongyan3 1. Research institute of petroleum Exploration and Development, Petrochina, Beijing 100083, china 2. Anhui Science and Technology College, Huainan 232000, china 3. Langfang Branch, Research institute of petroleum Exploration and Development, Petrochina, Langfang 065007, china 1. Research institute of petroleum Exploration and Development PetroChina Beijing 100083 China 2. Anhui Science and Technology College Huainan 232000 China 3. Langfang Branch Research Institute of Petroleum Exploration and Development PetroChina Langfang 065007 China

The stable carbon isotope values of coalbed methane range widely, and also are gener- ally lighter than that of gases in normal coal-formed gas fields with similar coal rank. There exists strong carbon isotope fractionation in coalbed methane and it makes the carbon isotope value lighter. The correlation between the carbon isotope value and Ro in coalbed methane is less obvious. The coaly source rock maturity cannot be judged by coalbed methane carbon isotope value. The carbon isotopes of coalbed methane become lighter in much different degree due to the hydrodynamics. The stronger the hydrodynamics is, the lighter the CBM carbon isotopic value becomes. Many previous investigations indicated that the desorption-diffusion effects make the carbon isotope value of coalbed methane lighter. However, the explanation has encountered many problems. The authors of this arti- cle suggest that the flowing groundwater dissolution to free methane in coal seams and the free methane exchange with absorbed one is the carbon isotope fractionation mechanism in coalbed methane. The flowing groundwater in coal can easily take more 13CH4 away from free gas and com- paratively leave more 12CH4. This will make 12CH4 density in free gas comparatively higher than that in absorbed gas. The remaining 12CH4 in free gas then exchanges with the adsorbed methane in coal matrix. Some absorbed 13CH4 can be replaced and become free gas. Some free 12CH4 can be ab- sorbed again into coal matrix and become absorbed gas. Part of the newly replaced 13CH4 in free gas will also be taken away by water, leaving preferentially more 12CH4. The remaining 12CH4 in free gas will exchange again with adsorbed methane in the coal matrix. These processes occur all the time. Through accumulative effect, the 12CH4 will be greatly concentrated in coal. Thus, the stable carbon isotope of coalbed methane becomes dramatically lighter. Through simulation experiment on wa- ter-dissolved methane, it had been proved that the f

关键词： coalbed methane,methane stable carbon isotope,fractionation mechanism,accumulative effect.

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自走式修井机游动系统仿真模型

石油学报 2002年第4期23卷 90-92,96页

作者：侯勇俊艾志久任杰王文武西南石油学院机电工程学院四川南充637001 川油广汉宏华有限公司四川广汉618300 四川石油管理局川西南矿区四川自贡643000

为了获得自走式修井机的系统动力学特性 ,在系统动力学仿真软件ADAMS中建立了修井机游动系统的起升和下钻仿真模型 ,成功地用Rack_and_PinionJoint模拟了钢丝绳与滑轮间的缠绕关系 ,用SingleComponentForce模拟出了钢丝绳在起升、下钻... 详细信息

为了获得自走式修井机的系统动力学特性 ,在系统动力学仿真软件ADAMS中建立了修井机游动系统的起升和下钻仿真模型 ,成功地用Rack_and_PinionJoint模拟了钢丝绳与滑轮间的缠绕关系 ,用SingleComponentForce模拟出了钢丝绳在起升、下钻过程中刚度的变化过程。对仿真模型在额定工况时的起升、下钻过程进行了仿真运算 ,得到了游动系统中快绳、死绳、各游绳及井架上的最大动载荷和动载系数。仿真结果可用于钢丝绳的选择、井架的设计和使用时参考。该仿真模型中解决钢丝绳与滑轮间的缠绕和钢丝绳的刚度随时间变化的方法也可为研究钻机、矿井提升系统等类似的时变结构系统动力学时借鉴。

关键词：自走式修井机游动系统动态特性仿真模型

Quantitative studies of hydrocarbon loss of the Silurian bitumen sandstone in the Tarim Basin

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Science china Earth Sciences 2008年第S2期51卷 101-107页

作者： JIANG ZhenXue1,2,PANG XiongQi1,2,LIU LuoFu1,2,WANG XianDong3,ZHANG Jun4 & LI HongYi1,2 1 Basin and Reservoir Research Center,china University of petroleum,Beijing 102249,china 2 State Key Laboratory of petroleum Resource and Prospecting,china University of petroleum,Beijing 102249,china 3 Research institute of Exploration and Development,Daqing Oilfield Company Ltd,Daqing 163712,china 4 petroleum Exploration and Production institute of SINOPEC,Beijing 100083,china china Univ Petr Basin & Reservoir Res Ctr Beijing 102249 Peoples R China china Univ Petr State Key Lab Petr Resource & Prospecting Beijing 102249 Peoples R China Daqing Oilfield Co Ltd Res Inst Explorat & Dev Daqing 163712 Peoples R China SINOPEC Petr Explorat & Prod Inst Beijing 100083 Peoples R China

The evolution of Tarim Basin experienced several tectonic movements,of which Caledonian movement caused a serious damage to reservoirs of Silurian. The earlier reservoirs size and the later hydrocarbon loss are two key factors to exploration prospect of Silurian. On the basis of net thickness of bituminous sandstone and recovery coefficient of crude oil converting to bitumen,the scale of the hydrocarbon loss of palaeo-accumulation in bitumen sandstone of Silurian was calculated (86.30×108t). The deter-mination of net thickness of bitumen sandstone was completed mainly by several methods,such as physical property demarcation,observing lithology,grains with oil inclusion (GOI) technology,and quantitative grains fluorescence (QGF) technology. The samples of black sandstone and white sand-stone were collected and compared by means of the methods mentioned above. The results showed that there was little hydrocarbon,or none,in the white sandstone. The recovery coefficient was ob-tained by the analyses of plentiful physical parameters of crude oil and bitumen sandstone,based on the hypothesis that nonhydrocarbon compounds and bitumen were invariable in the process of bitu-men forming. The calculated result,which is more scientific and actual,indicates the exploration pros-pect is more promising in Silurian of the Tarim Basin.

关键词： Tarim Basin Silurian bitumen sandstone hydrocarbon loss quantitative research recovery coefficient

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大位移井钻井技术研究及在渤海油田的应用

石油学报 2003年第2期24卷 84-88,93页

作者：蒋世全姜伟付建红季细星付鑫生中海石油研究中心北京100027 西南石油学院四川南充637001 中国石油勘探开发研究院北京100083 西安石油学院陕西西安710065

针对渤海油田钻 40 0 0m水平位移井遇到的技术难题 ,进行了摩阻扭矩预测及评价、井眼净化计算、井壁稳定计算 ,设计了软件集成平台 ,研制了可变径稳定器及井下闭环可变径同心稳定器 ,开发了用于大位移井的水基泥浆。这些技术及设备在... 详细信息

针对渤海油田钻 40 0 0m水平位移井遇到的技术难题 ,进行了摩阻扭矩预测及评价、井眼净化计算、井壁稳定计算 ,设计了软件集成平台 ,研制了可变径稳定器及井下闭环可变径同心稳定器 ,开发了用于大位移井的水基泥浆。这些技术及设备在渤海秦皇岛 3 2 6等油田 6口大位移井中应用 ,均取得了良好的效果。

关键词：大位移井钻井技术扭矩可变径稳定器水基泥浆渤海油田

Magnetic mineralogy of the Hongqiling Cu-Ni sulphide deposit: Implications for ore genesis

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Progress in Natural Science:Materials International 2007年第10期17卷 1192-1198页

作者： Xi Aihua1,2, Ge Yuhui1, Cai Yuanfeng2 and Zhang Xuefeng3(1. Faculty of Resources & Environment, southwest petroleum University, Chengdu 610500, china 2. State Key Laboratory for Endogenic Metal Deposit Research, Nanjing University, Nanjing 210093, china 3. Department of Natural Resources & Technology Information, china University of petroleum, Beijing 102249, china) Faculty of Resources & Environment Southwest Petroleum University Chengdu 610500 China State Key Laboratory for Endogenic Metal Deposit Research Nanjing University Nanjing 210093 China Department of Natural Resources & Technology Information China University of Petroleum Beijing 102249 China

Pyrrhotite is one of the common ore minerals in Cu-Ni sulphide deposits, but only monoclinic pyrrhotite is ferromagnetic at room temperature. X-ray and EPA analyses reveal that most pyrrhotite forming sideronitic texture in the Hongqiling Cu-Ni sulphide deposit is monoclinic, but that in the massive ore is a mixture of monoclinic and hexagonal pyrrhotites. Differential thermal and magnetic- thermogravimetric analyses of massive ore indicate a magnetic transition and heat absorption at 323℃, suggesting that this temperature is the thermomagnetic and phase transition point of pyrrhotite. For massive pyrrhotite ores heated at 400oC for 30 h and then quenched by cool water, the monoclinic pyrrhotite (mpo) transforms completely into the hexagonal pyrrhotite (hpo). However, all the pyrrhotites resulting from slow cooling of the sample in air are mpo. These results indicate that transformation between hpo and mpo depends upon the cooling rate. Therefore, massive ores in this deposit might have been formed via rapid cooling of ore melts. On the other hand, it is significant to study the effect of the ratio of the magnetite in total ores on the genesis of magmatic Cu-Ni suphide deposits.

关键词： pyrrhotite magnetite genesis of Cu-Ni sulphide deposit Hongqiling.

Carbon and hydrogen isotopic characteristics of natural gases from the Luliang and Baoshan basins in Yunnan Province, china

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Science china Earth Sciences 2006年第9期49卷 938-946页

作者： XU Yongchang1, LIU Wenhui2, SHEN Ping1, WANG Wanchun1, WANG Xiaofeng1, Tenger1, YAN Yaomin3 & LIU Ruobin3 1. Lanzhou Center of Oil & Gas Resources, institute of Geology and Geophsics, Chinese Academy of Sciences, Lanzhou 730000, china 2. Research institute of petroleum Exploration and Production, SINOPEC, Beijing 100083, china 3. South Branch of petroleum Exploration and Production Company, SINOPEC, Kuming 650000, china 1. Lanzhou Center of Oil & Gas Resources Institute of Geology and Geophsics Chinese Academy of Sciences Lanzhou 730000 China 2. Research institute of petroleum Exploration and Production SINOPEC Beijing 100083 China 3. South Branch of petroleum Exploration and Production Company SINOPEC Kuming 650000 China

The Luliang and Baoshan basins of Yunnan Province are two small-sizedcontinental oil/gas-bearing sedimentary basins, which were developed at the bases of theCarboniferous and Devonian systems during the Late Tertiary, covering an area of 325 km^2 and 254km^2, respectively. Since the 1990s, there have been discovered small-sized natural gas pools inthese two basins. The natural gases are composed mainly of hydrocarbon gases, with nonhydrocarbonsaccounting for less than 2%. Of the hydrocarbon gases, methane accounts for more than 99%, and thecomponents above C_2 account for less than 0.2%. On the basis of previous studies of geologicalbackground, the composition of natural gases and their carbon isotopic composition, it has beendefined that these two gas pools are of bacterial origin. In this work we have comprehensivelymeasured the carbon and hydrogen isotopic composition of natural gases from these two basins andhave gone into the details of the mechanism of gas generation. The δ^(13)C_1 values of naturalgases from the Luliang Basin are within the range of -72.1 per thousand - -73.3 per thousand, andthe δD_(CH_4) values, -242 per thousand - -234 per thousand, indicating that the bacterial gasgeneration is dominated by the way of CO_2 reduction. It has been evidenced that undercontinental-facies fresh water conditions there did occur the CO_2 reduction as a process ofbacterial gas generation. The δ^(13)C_1 values of natural gases from the Baoshan Basin are withinthe range of - 62.5 per thousand - -63.5 per thousand, and the δD_(CH_4) values, -252 per thousand- -260 per thousand. These isotopic characteristics are fallen into transitional phase of acetatefermentation and CO_2 reduction as defined by Whiticar et al. (1986). An important discovery in theLuliang Basin is the carbon isotopic composition of ethane of purely biogenetic origin, i.e., itsδ^(13)C_2 values are within the range of - 61.2 per thousand - - 66.0 per thousand. These carbonisotopic values have been r

关键词： bacterial gas, carbon and hydrogen isotope, CO2 reduction, acetate fermentation.

Control of the Rendition Wavelength Shifts of Color Lippmann Holograms Recordedin Single-layer panchromatic Silver-halide Emulsion

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Chinese Journal of Lasers 2000年第2期9卷 155-160页

作者： ZHU Jianhua, GUO Lurong, LI Zuoyou, LIU Zhenqing (Information Optics institute, Sichuan University, Chengdu 610064, china institute of southwest Find Physics, Chengdu 610003, china ) 四川大学四川成都中国工程物理研究院西南流体物理所四川成都

Russian PFG-03C panchromatic ultra-high resolution silver-halide emulsion is regarded as the most successful material for the fabrication of color reflection holograms. But the lack of established and reliable processing sequences prevents its practical applications in business and everyday life. Though much attention is drawn upon the processing of PFC-03C color reflection holograms, the color desaturation is still a problem. The article describes the new processing of color holograms recorded in PFC- 03C plates which is demonstrated experimentally to have the capacity of controlling the rendition wavelength shifts and improving the color desaturation effectively. The rendition spectra of Red-Green-Blue (R. G. B. ) single-line reflection holographic gratify, and the color reflection hologram as well, are given in this paper.

关键词： color holography reflection holograms rendition wavelength color desaturation

A NEW WELL TEST MODEL FOR STRESS-SENSITIVE AND RADIALLY HETEROGENEOUS DUAL-POROSITY RESERVOIRS WITH NON-UNIFORM THICKNESSES

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Journal of Hydrodynamics 2011年第6期23卷 759-766页

作者： ZHANG Lie-hui, GUO Jing-jing, LIU Qi-guo State Key Laboratory of Reservoir Geology and Exploitation, southwest petroleum University, Chengdu 610500, china State Key Laboratory of Reservoir Geology and Exploitation Southwest Petroleum University Chengdu 610500 China

This article presents a new well test model for stress-sensitive composite dual-porosity reservoirs based on the concept of permeability modulus, where the rock and fluid properties as well as the formation thickness vary in the radial direction. An analytical solution in the Laplace space for the pressure-transient behavior for a line-source, constant-rate well of this type of reservoir is obtained with the Laplace transformation and the perturbation technique. The pressure and its derivative in the reservoir and the effects of relevant parameters on the pressure-transient response are obtained. The model as well as the corresponding type curves may be used in predicting the production performance or analyzing the production data for this type of reservoir.

关键词： non-uniform thickness stress-sensitive composite dual-porosity well test model type curve

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气液固三相相平衡计算

石油学报 2002年第1期23卷 98-101页

作者：李闽李士伦郭平西南石油学院石油工程系四川南充637001

根据对油气烃类体系相态特征的一般性认识与文章中提出的沥青组分特征化方法 ,导出了与之相应的有其自身特殊性的气液沥青三相相平衡物料平衡方程组。用考虑沥青沉降三相闪蒸数值算法 ,能对沥青沉降进行有效的量化模拟计算。此外 ,... 详细信息

根据对油气烃类体系相态特征的一般性认识与文章中提出的沥青组分特征化方法 ,导出了与之相应的有其自身特殊性的气液沥青三相相平衡物料平衡方程组。用考虑沥青沉降三相闪蒸数值算法 ,能对沥青沉降进行有效的量化模拟计算。此外 ,文章提出了大的交互作用系数可以描述沥青与原油中轻烃不相溶性的观点。结合实例计算 ,给出了沥青质参考逸度的计算、饱和压力和沥青沉降量的拟合方法。

关键词：沥青沉降逸度状态方程闪蒸计算饱和压力气液固三相相平衡石油开采油气烃