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Identification of Oil Reservoir Meeting Atypical Archie Phenomenon 满足非典型阿奇现象的油藏识别
The Open Petroleum Engineering Journal Pub Date : 2015-08-19 DOI: 10.2174/1874834101508010354
Shi Yuan, Haimin Guo, Yu Ding, R. Deng
{"title":"Identification of Oil Reservoir Meeting Atypical Archie Phenomenon","authors":"Shi Yuan, Haimin Guo, Yu Ding, R. Deng","doi":"10.2174/1874834101508010354","DOIUrl":"https://doi.org/10.2174/1874834101508010354","url":null,"abstract":"According to core data, this paper studies variation of resistivity in different pore structures and wettability conditions. The results show that with the increase of pore structure index m, the resistivity will increase significantly when the saturation is constant. Similarly, with increasing saturation index n, the resistivity will also increase even with the same saturation. With fixed m and n, the calculated formation water saturation will be very high, resulting in hydro- carbon reservoir being ignored. This variation characteristic is significant for the identification of hidden reservoir with atypical Archie formula.","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127363750","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
The Key and the Countermeasures Research of Shale Gas FracturingTechnology 页岩气压裂技术关键与对策研究
The Open Petroleum Engineering Journal Pub Date : 2015-08-19 DOI: 10.2174/1874834101508010325
Yong Tang, Bin Wang, F. Zeng, Jun Wang
{"title":"The Key and the Countermeasures Research of Shale Gas FracturingTechnology","authors":"Yong Tang, Bin Wang, F. Zeng, Jun Wang","doi":"10.2174/1874834101508010325","DOIUrl":"https://doi.org/10.2174/1874834101508010325","url":null,"abstract":"Shale gas resources are abundantly distributed with low porosity and permeability. Horizontal well and fractur- ing are prior considerations. Fracturing is a widely-used technology to enhance gas production. In this paper, the author (a) investigated the present stimulation of Barnett and Haynesvile gas fields (Fig. 1) in America, Sichuan basin (Fig. 2) in China and Cooper basin (Fig. 3) in Australia; (b) compared different characteristics and limitations of multi-stage fractur- ing, water-fracturing, simultaneous fracturing, net fracturing, refracturing and hydraulic jet fracturing; (c) analyzed the critical point of the shale fracturing; (d) offered solutions to the fracturing fluid manufacture, selection and improvement of the fracturing fluids, fractures extension, equipments, fracturing effect evaluation and reservoir protection. It has a far- reaching significance to improve fracturing and stimulation of shale gas reservoirs, in view of the high risk, low success ratio and poor stimulation effect the shale gas exploration would face.","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123736990","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
Empirical Study of Factors Affecting Training Transfer of GrassrootsEmployees in Petroleum Enterprises 石油企业基层员工培训转移影响因素实证研究
The Open Petroleum Engineering Journal Pub Date : 2015-08-19 DOI: 10.2174/1874834101508010368
Jun Shi, Xiantao Liu
{"title":"Empirical Study of Factors Affecting Training Transfer of GrassrootsEmployees in Petroleum Enterprises","authors":"Jun Shi, Xiantao Liu","doi":"10.2174/1874834101508010368","DOIUrl":"https://doi.org/10.2174/1874834101508010368","url":null,"abstract":"From the economic perspective, training can be perceived as an enterprise's act of investing in employees, and the post-training transfer effect is the return acquired by the enterprise. Obviously, training transfer provides a new per- spective for research of the training effect and training return on investment of the enterprise. From three aspects includ- ing personal characteristics, training design, and transfer atmosphere, this paper designs a questionnaire to investigate the factors that affect training transfer of grassroots employees in petroleum enterprises. The empirical analysis has shown that the main factors affecting training transfer of grassroots employees in petroleum enterprises are personal characteris- tics, organizational support and management support.","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131777631","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
Review of Well Logs and Petrophysical Approaches for Shale Gas inSichuan Basin, China 四川盆地页岩气测井与岩石物理方法综述
The Open Petroleum Engineering Journal Pub Date : 2015-08-19 DOI: 10.2174/1874834101508010316
Yuanzhong Zhang, Sicheng Jin, Hao Jiang, Yuwei Wang, Peng Jia
{"title":"Review of Well Logs and Petrophysical Approaches for Shale Gas inSichuan Basin, China","authors":"Yuanzhong Zhang, Sicheng Jin, Hao Jiang, Yuwei Wang, Peng Jia","doi":"10.2174/1874834101508010316","DOIUrl":"https://doi.org/10.2174/1874834101508010316","url":null,"abstract":"China has vast reserves of shale gas. Currently, shale gas is one of the focuses of the unconventional reservoir. Well logs play an import role in shale gas production, and it is the bridge connecting geology, geophysics and petroleum engineering. In the exploration stage, well logs are used to identify lithology, evaluate the parameters of mineral types and compositions, total organic carbon (TOC), porosity, permeability, gas content, and the potential resources quantity. In the development stage, well logs offer various parameters of geological and engineering for horizontal drilling and produc- tion, evaluate the mechanical properties and calculate the magnitude and orientation of the in-situ stress for hydraulic frac- turing stimulation. We reviewed current well logs for shale gas in China and discussed the development trend in the paper. A case history in Sichuan Basin presented to analyze the logs response characteristics and parameters calculation for a shale gas well. The difficulty and the future attention focus are also discussed.","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"28 32","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134412740","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: 11
Editorial: Recent Advances in Borehole Geophysics in Unconventional Resources:Applications, Techniques and Challenges 社论:非常规资源井眼地球物理的最新进展:应用、技术和挑战
The Open Petroleum Engineering Journal Pub Date : 2015-08-19 DOI: 10.2174/1874834101508010262
Hua Wang
{"title":"Editorial: Recent Advances in Borehole Geophysics in Unconventional Resources:Applications, Techniques and Challenges","authors":"Hua Wang","doi":"10.2174/1874834101508010262","DOIUrl":"https://doi.org/10.2174/1874834101508010262","url":null,"abstract":"More percentage of new productions in oil industry is from unconventional oil and gas such as oil shale, tar sand, laminated sand, tight oil (siltstone), tight gas, gas hydrate, and igneous rock, because the conventional oil and gas can no longer meet the need of the world. Researchers in response pay more attentions to the unconventional resources. Formation properties such as total organic carbon (TOC), porosity, permeability and saturation are critical for exploration and development of the unconventional reservoirs. Recent developments in wire-line methods to determine these properties have led to the completion and production strategies based on those mentioned properties. Logging-WhileDrilling measurements have the capability of determining some of these properties in real-time, so that completion decisions can be made rapidly and wells can be steered using the real-time data [1].","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134614899","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
Recognition of Oil Shale Based on LIBSVM Optimized by Modified GeneticAlgorithm 基于改进遗传算法优化LIBSVM的油页岩识别
The Open Petroleum Engineering Journal Pub Date : 2015-08-19 DOI: 10.2174/1874834101508010363
Q. Hu, Cong Wang, Xin Zhang, Jing Fan
{"title":"Recognition of Oil Shale Based on LIBSVM Optimized by Modified GeneticAlgorithm","authors":"Q. Hu, Cong Wang, Xin Zhang, Jing Fan","doi":"10.2174/1874834101508010363","DOIUrl":"https://doi.org/10.2174/1874834101508010363","url":null,"abstract":"In order to improved the speed, accuracy and generalization of oil shale recognition model with log dada, con- sidering parameters of traditional SVM were chosen by experience, a LIBSVM recognition model with optimized pa- rameters was proposed based genetic algorithm. First of all, all the samples data were processed to double type as LIBSVM tool needing, and the best normalization way was chosen through comparing different accuracies of various normalization ways. Secondly, the fitness value was calculated by the traditional LIBSVM. Finally, parameters C and g were optimized by genetic algorithm according the fitness value. The optimized LIBSVM oil shale recognition model was applied in northern Qaidam basin to identify oil shale, the results show that optimized recognition model is a tool of better generalization ability and the recognition accuracy reaches as much as 97.2806%. According to the popularization effects in the well area of same geology background, this optimized LIBSVM model is the best for now.","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130620220","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
Feasibility Study of While-drilling Data Transmission Technology Basedon Radio Frequency Identification 基于射频识别的随钻数据传输技术可行性研究
The Open Petroleum Engineering Journal Pub Date : 2015-08-19 DOI: 10.2174/1874834101508010293
Ni Weining, Jibo Li, Shan-Guo Li, Wei Zhang
{"title":"Feasibility Study of While-drilling Data Transmission Technology Basedon Radio Frequency Identification","authors":"Ni Weining, Jibo Li, Shan-Guo Li, Wei Zhang","doi":"10.2174/1874834101508010293","DOIUrl":"https://doi.org/10.2174/1874834101508010293","url":null,"abstract":"Downhole data transmission methods based on mud-pulse and low-frequency electromagnetic waves can't sat- isfy the need of large amount and high speed data uploading during drilling. In this paper, a novel data transmission tech- nique based on releasing RFID tags by LWD tools is designed and validated. As the memory and transmission media, RFID tags are pre-mounted tactfully in cavities of the downhole releasing tool which can transmits/write LWD data to these tags. By releasing regularly or irregularly into the annulus fluids, RFID tags can be carried to the surface by mud circulation. To finish data transportation function, LWD data can be read out on the surface. Wireless charging high ca- pacity (1Mbits) RFID tags are designed, which contains microprocessor and memory, to expand the storage capacity of RFID tags. The power supply for microprocessor and memory in the tag is electromagnetic waves from RF Reader/Writer module. The equivalent data transmission speed of this system can be up to 278 bit/s (1 tag/h is assumed), which is more much faster than the traditional mud pulser (<10 bit/s).","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"349 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124300825","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
Logging Evaluation Method for Pore Pressure of Shale Gas Reservoirs-Taking Fuling Area, Sichuan Basin as an Example 页岩气储层孔隙压力测井评价方法——以四川盆地涪陵地区为例
The Open Petroleum Engineering Journal Pub Date : 2015-08-19 DOI: 10.2174/1874834101508010350
Hao Shibo, Jin Wujun
{"title":"Logging Evaluation Method for Pore Pressure of Shale Gas Reservoirs-Taking Fuling Area, Sichuan Basin as an Example","authors":"Hao Shibo, Jin Wujun","doi":"10.2174/1874834101508010350","DOIUrl":"https://doi.org/10.2174/1874834101508010350","url":null,"abstract":"Unconventional oil and gas resources, especially shale gas resources have great potential for exploration and development in China. In Shale gas exploration and development process, reservoir pore pressure is a very important pa- rameter, and the pore pressure prediction can improve the appraisal accuracy of project dessert. This paper analyzes sev- eral formation pore pressure calculation methods based on logging data, and optimized the \"Equivalent depth method\". The preliminary results show that this method can carry out the accurate evaluation on the abnormal high pressure of the shale gas reservoirs of Fuling area with high calculation precision and application potential. Shale gas is natural gas extracted from shale, and mainly exists in the dark mud shale or high carbon mud shale. Shale has changeable mineral composition and complex pore struc- ture, therefore it mainly exists in surfaces of kerogen or clay particles in the adsorbed state, and exists in the cracks, pores and other storage space in the free-state, and also a very small amount of shale gas is present in dissolved state in kerogen or asphalt. The study area of this paper lies in the Fuling area of Sichuan basin, and its good potential of organ- ic rich shale mainly developed in the Longmaxi formation of Silurian to the Wufeng formation of Ordovician. The shale thickness is generally 40-210 m, the TOC content is from 1.0% to 5.0%, porosity ranges from 2% to 7.2%, and the buried depth is in the 2000 m to 3000 m range. The Longmaxi formation of Silurian is a set of black shale with gray green muddy siltstone. And the lithology of the Wufeng formation of Ordovician is gray dark silty mudstone that contain graptolite fossils.","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128502554","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: 1
Productivity Model for Shale Gas Reservoir with Comprehensive Considerationof Multi-mechanisms 综合考虑多机理的页岩气藏产能模型
The Open Petroleum Engineering Journal Pub Date : 2015-07-31 DOI: 10.2174/1874834101508010235
Ya Deng, R. Guo, Zhong-yuan Tian, Cong Xiao, H. Han, Wen-Jing Tan
{"title":"Productivity Model for Shale Gas Reservoir with Comprehensive Considerationof Multi-mechanisms","authors":"Ya Deng, R. Guo, Zhong-yuan Tian, Cong Xiao, H. Han, Wen-Jing Tan","doi":"10.2174/1874834101508010235","DOIUrl":"https://doi.org/10.2174/1874834101508010235","url":null,"abstract":"Multi-stage fracturing horizontal well currently has been proved to be the most effective method to produce shale gas. This method can activate the natural fractures system defined as stimulated reservoir volume (SRV), the re- maining region similarly is defined as un-stimulated reservoir volume (USRV). At present, no type curves have been de- veloped for hydraulic fractured shale gas reservoirs in which the SRV zone has triple-porosity dual-depletion flow behav- ior and the USRV zone has double porosity flow behavior. In this paper, the SRV zone and USRV zone respectively are simplified as cubic triple-porosity and slab dual porosity media. We have established a new productivity model for multi- fractured horizontal well shale gas with Comprehensive consideration of desorption, diffusion, viscous flow, stress sensi- tivity and dual-depletion mechanism in matrix. The rate transient responses are inverted into real time space with stehfest numerical inversion algorithm. Type curves are plotted, and different flow regimes in shale gas reservoirs are identified. Effects of relevant parameters are analyzed as well. The whole flow period can be divided into 8 regimes: bilinear flow in SRV; pseudo elliptic flow; dual inter-porosity flow; transitional flow; linear flow in USRV; inter-porosity flow and boundary-dominated flow. The stress sensitivity basically has negative influence on the whole productivity period .The less the value of Langmuir volume and the lager the value of Langmuir pressure, the more lately the inter-porosity flow and boundary-dominated flow occurs. It in concluded that the USRV zone has positive influence on production and could not be ignored.","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130441898","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: 6
The Research of Capillary Pressure in the Process of CO2Displacement in Low-permeability Reservoir 低渗透油藏co2驱替过程中的毛管压力研究
The Open Petroleum Engineering Journal Pub Date : 2015-07-31 DOI: 10.2174/1874834101508010248
Li Jiqiang, Huang Xiaoliang, Niu Xiaofeng, Yuan Yingzhong, Yan Wende
{"title":"The Research of Capillary Pressure in the Process of CO2Displacement in Low-permeability Reservoir","authors":"Li Jiqiang, Huang Xiaoliang, Niu Xiaofeng, Yuan Yingzhong, Yan Wende","doi":"10.2174/1874834101508010248","DOIUrl":"https://doi.org/10.2174/1874834101508010248","url":null,"abstract":"The function of capillary pressure in the process of CO2 displacement in low-permeability reservoir is re- searched through combination indoor experiments and numerical simulation. On the basis of different displacement ex- periments in long core chamber, one-dimensional numerical simulation component model is built to research the function of capillary pressure under the different CO2 displacement ways. The results show that the capillary pressure under the different CO2 displacement ways is not consistent. Capillary pressure is driving force in the process of CO2 displacement while resistance force in the process of CO2 pressure buildup and displacement. In order to promote reasonable and effi- cient development of low-permeability reservoirs, it is suggested that further study about microscopic effects and laws of the capillary pressure in the reservoir should be done through experiment.","PeriodicalId":377053,"journal":{"name":"The Open Petroleum Engineering Journal","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133280904","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
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