The Open Petroleum Engineering Journal最新文献_第8页

Numerical Simulation of Fracture Permeability Change in Production ofPressure-sensitive Reservoirs with In-situ Stress Field 地应力场下压敏油藏生产裂缝渗透率变化的数值模拟

The Open Petroleum Engineering Journal Pub Date : 2015-10-22 DOI: 10.2174/1874834101508010440

Shaohua Gu, Yunqing Shi, Zhangxin Chen

{"title":"Numerical Simulation of Fracture Permeability Change in Production ofPressure-sensitive Reservoirs with In-situ Stress Field","authors":"Shaohua Gu, Yunqing Shi, Zhangxin Chen","doi":"10.2174/1874834101508010440","DOIUrl":"https://doi.org/10.2174/1874834101508010440","url":null,"abstract":"In pressure sensitive reservoirs, interaction effects among the porous media flow field, the fracture field and the stress field can cause some specific flow characteristics entirely different from those in conventional reservoirs. Dynamic fracture behavior is one of them, which generates a change in the value of fracture aperture and even a variation in the anisotropy of permeability. In this paper, we focus on the dynamic behavior of fractures and some affecting factors, in- cluding driving pressure and in-situ stress. Numerical discrete fracture network (DFN) models are built and solved by the finite element method to investigate what the range-ability the fracture presents and what impact these affecting factors have. In these mathematical models, both dynamic fractures and the fluid-solid coupling are taken into account, and a stress-strain model, a flow field model and a fluid-solid coupling model are included. Based on the models, the variation of fracture aperture in pressure sensitive reservoirs is studied and the results show that a different direction and connectivity of fractures lead fracture dilation to varying degrees as pressure changes so that the idea of anisotropic frac- ture porosity is proposed for reservoir scale simulation. The study also indicates that the drop of formation pressure de- termines the conductivity of fractures and anisotropy of permeability but just has a slight impact on the direction of prin- cipal permeability. Finally, the study shows the interaction of the in-situ stress pressure and the fracture field.","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114813363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D Reconstruction Algorithm of Weld Pool Surface Based on Computer Vision Technology 基于计算机视觉技术的熔池表面三维重建算法

The Open Petroleum Engineering Journal Pub Date : 2015-10-07 DOI: 10.2174/1874155x01509010820

Zhen-Hai Mu

{"title":"3D Reconstruction Algorithm of Weld Pool Surface Based on Computer Vision Technology","authors":"Zhen-Hai Mu","doi":"10.2174/1874155x01509010820","DOIUrl":"https://doi.org/10.2174/1874155x01509010820","url":null,"abstract":"As is well known that sensing and measuring the weld pool surface is very important to design intelligent weld- ing machines which is able to imitate a skilled human welder who can choose suitable welding parameters. Therefore, in this paper, we concentrate the problem of weld pool surface 3D reconstruction, which is a key issue in intelligent welding machines development. Firstly, the framework of the weld pool surface 3D reconstruction system is described. The weld pool surface 3D reconstruction system uses a single camera stereo vision system to extract original data from weld pool, and then the left and right image are collected. Afterwards, we utilize Pixel difference square and matching algorithm and Stereo matching algorithm to process images. Next, the 3D reconstruction of weld pool surface is constructed using the point cloud data. Secondly, stereo matching based weld pool surface 3D reconstruction algorithm is illustrated. In this al- gorithm, the matching cost function is computed through the Markov random field, and then the weighted matching cost is calculated via the guided filter. Thirdly, to test the performance of our proposed algorithm, we develop an experimental platform to measure weld pool width, length, convexity and the previous inputs based on a linear model predictive con- troller. Experimental results demonstrate that the proposed 3D reconstruction algorithm of weld pool surface can achieve high quality under both current disturbance and speed disturbance.","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130484062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The Design of the Acoustic Isolator Used in Acoustic Telemetry WhileDrilling 随钻声遥测用隔声器的设计

The Open Petroleum Engineering Journal Pub Date : 2015-09-28 DOI: 10.2174/1874834101508010427

Xie Haiming, Zhou Jing, Zhang Feng

引用次数: 2

Productivity Prediction Model of Vertical Artificial Fracture Well andAnalysis of Influence Factor in Low Permeability Reservoir 低渗透油藏垂直人工裂缝井产能预测模型及影响因素分析

The Open Petroleum Engineering Journal Pub Date : 2015-09-17 DOI: 10.2174/1874834101508010420

Chengli Zhang, Dezhi Liang, D. Yin, Guoliang Song

引用次数: 2

Experiment on the Influence of Vertical Heterogeneity of Reservoir on theSteam Drive Effect 储层垂向非均质性对蒸汽驱效果影响的实验研究

The Open Petroleum Engineering Journal Pub Date : 2015-09-15 DOI: 10.2174/1874834101508010415

Pang Jin, Yue Yixing, Peng Xu, Chen Guiping, Li lu

{"title":"Experiment on the Influence of Vertical Heterogeneity of Reservoir on theSteam Drive Effect","authors":"Pang Jin, Yue Yixing, Peng Xu, Chen Guiping, Li lu","doi":"10.2174/1874834101508010415","DOIUrl":"https://doi.org/10.2174/1874834101508010415","url":null,"abstract":"This paper carried out experimental studies on the influence of vertical heterogeneity of reservoir on the steam drive effect after multiple-round steam stimulations. Taking the actual productive process of a heavy oil reservoir as an example, a physical model for the vertical heterogeneity was established. First, under the initial reservoir conditions, conduct multiple rounds of steam stimulations to obtain the initial reservoir conditions of steam drive, and then carry out physical simulation of steam drive, including the simulation of the horizontal reservoir and the tilted one. The development of temperature field and the oil-water output changes indicate that when the steam drive is conducted after the steam stimulations, the steam advances along the high permeability layer with better steam stimulation effect, once it gets a breakthrough, the swept volume will not change. For the tilted reservoir, due to the beneficial effects of the gravity drainage, its displacement effect is better than the horizontal one, which provides an important basis for the adjustment of layers and the section of methods of gas injection when the steam simulation is converted into steam drive.","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125492084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic Nonlinear Correlation Studies on Stock and Oil Market Based onCopula 基于copula的股票与石油市场动态非线性相关性研究

The Open Petroleum Engineering Journal Pub Date : 2015-09-15 DOI: 10.2174/1874834101508010405

He Xin, Zhang Guofu

引用次数: 0

Study on Inversion of Mining Subsidence Based on PSO-BP Algorithm forOkada Model 基于okada模型PSO-BP算法的开采沉陷反演研究

The Open Petroleum Engineering Journal Pub Date : 2015-09-15 DOI: 10.2174/1874834101508010410

Wu Jifeng, Y. Zhiqiang, Wu Xiaolong

引用次数: 0

Volumetric Source Model to Predict Productivity of Fractured HorizontalWell in Naturally Fractured Reservoirs 基于体积源模型的压裂水平井产能预测

The Open Petroleum Engineering Journal Pub Date : 2015-09-10 DOI: 10.2174/1874834101508010373

Tianhui Wang, Haitao Li, Jun-chao Wang, Yun-Wei Jia, Lifeng Liu

{"title":"Volumetric Source Model to Predict Productivity of Fractured HorizontalWell in Naturally Fractured Reservoirs","authors":"Tianhui Wang, Haitao Li, Jun-chao Wang, Yun-Wei Jia, Lifeng Liu","doi":"10.2174/1874834101508010373","DOIUrl":"https://doi.org/10.2174/1874834101508010373","url":null,"abstract":"To predict productivity of fractured horizontal wells with different completion methods, the flow models of reservoir and hydraulic fractures are developed by utilizing volumetric source idealization, while the models solved by taking orthogonal transformation. Compared to traditional point source functions, volumetric source function has many advantages in properties of function and programming calculation. A practical example of fractured horizontal well of open-hole and cased-hole is simulated, result shows flow rates of two cases have significant difference at early time, since benefit of production of horizontal well; but it also causes additional pressure, which has disadvantage in the productivity. The difference of productivity of fractured horizontal wells with different completion is decided by the interaction of horizontal well’s production and additional pressure drop, which has advantage and disadvantage in the open-hole case respectively. As a result, methods to cause additional pressure drop more seriously such as increasing number, length or conductivity of hydraulic fractures, would reduce the difference; methods to enhance horizontal well’s production such as better reservoir flow capacity, would raise the difference.","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122282274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Sedimentary Mechanism in the Coal and Oil Shale Bearing SuccessionGraben Basins: The Comparision between Fushun and Huangxian Basins,Eastern China 含煤油页岩序贯地堑盆地的沉积机制——以抚顺盆地与黄县盆地为例

The Open Petroleum Engineering Journal Pub Date : 2015-09-10 DOI: 10.2174/1874834101508010385

Dawei Lv, Xiaoyan Wu, Zengxue Li, T. Feng, Haiyan Liu, Dongdong Wang, Luyang Zhao

{"title":"Sedimentary Mechanism in the Coal and Oil Shale Bearing SuccessionGraben Basins: The Comparision between Fushun and Huangxian Basins,Eastern China","authors":"Dawei Lv, Xiaoyan Wu, Zengxue Li, T. Feng, Haiyan Liu, Dongdong Wang, Luyang Zhao","doi":"10.2174/1874834101508010385","DOIUrl":"https://doi.org/10.2174/1874834101508010385","url":null,"abstract":"The association of coal and oil shale had been a hot topic for a long time. Various types of association of coal and oil shale can be found in one basin, for instance, the coal can act as the roof or floor or interlayer of the oil shale, etc. The most crucial factor for the formation of oil shale is stratification and seasonal blooming of lower plankton, while the final formation of the coal still needs a hypoxia restored deposition environment. We take Huangxian and Fushun basins as typical examples to study the coal and oil shale sedimentary mechanisms controlled by the boundary fault. We found that the sedimentary mechanisms are different in different stages during the process of basin evolution. In the early stage, the association of coal and oil shale with thinner layers can be found. In the late part of early stage, thick layer coal seams and oil shale can be formed because of the relative stable faults. In the middle stage, thicker oil shale can be formed in deep lake and thicker coal seams can be formed in the lacustrine shore. In the late stage of basin evolution, the association of thickest coal seams and oil shale can be formed as the stable tectonic environment. Compared with the depression ba- sin, more active fault and short cycle subsidence controlled by the episodic tectonic movements are the obvious character- istics. Higher rate of tectonic subsidence and a vast difference between sedimentary (peat-bearing) supply rate and ac- commodation space change rate are in favor of forming oil shale, and slower rate of tectonic subsidence is favor of form- ing coal. The study found that faulted structures obviously control the development, thickness and distribution characteris- tics of oil shale and coal. As mentioned above, the episodic tectonic movement of continental rift basin controls the types and filling and evolution of deposits.","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130732812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Experimental Study of Chemical Flooding of Suizhong 36-1 Oilfield 绥中36-1油田化学驱试验研究

The Open Petroleum Engineering Journal Pub Date : 2015-09-10 DOI: 10.2174/1874834101508010392

Pi Yan-fu, Guo Xiaosai, Pi Yanming, Wu Peng

引用次数: 3