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Mechanical property design method of cement sheath in a horizontal shale oil well under fracturing co.ditions

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Petroleum Exploration and Development 2022年第4期49卷 919-928页

作者： SU Donghua HUANG Sheng LI Zaoyuan LI Jin XIAO Dunqing WANG Ziyu LI Juan NI Shuai State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500China petrochina Dagang oilfield co.pany Tianjin 300280China Foreign co.peration Projects Department of petrochina Dagang oilfield co.pany Tianjin 300280China Oil Production Technology Institute PetroChina Dagang Oilfield CompanyTianjin 300280China NO.2 Cementing Branch of CNPC Bohai Drilling Engineering co. Ltd.Tianjin 300280China

Based on the elastoplastic model of cement sheath co.sidering the influence of three-dimensional principal stress and the stress field model of interface crack,a mechanical performance design method of cement sheath is established to meet the wellbore sealing requirements during *** method takes the failure types of the cement sheath,such as tensile failure,plastic yield,interface crack propagation along interface and zigzag propagation into ***,the elasticity modulus and Poisson's ratio quantitative design charts of cement sheath are co.structed based on this method,and the safety and risk areas of wellbores are defined,which quantify the yield strength and tensile strength indexes of cement *** results show that decreasing elasticity modulus,increasing yield strength and Poisson's ratio of cement sheath can avoid plastic deformation of cement sheath;increasing the tensile strength of cement sheath can prevent its tensile failure;increasing elasticity modulus and Poisson's ratio of cement sheath is good for shortening the length of the interface crack,but will increase the risk of interface cracks zigzagging into cement *** model calculation and case verification has proved that the method in this paper can give accurate calculation results and is co.venient for field application.

关键词： shale oil horizontal well fracturing cement sheath mechanical properties wellbore sealing failure type quantitative chart

Origin and Source of Deep Natural Gas in Nanpu sag, Bohai Bay Basin, China

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Acta Geologica Sinica(English Edition) 2013年第4期87卷 1081-1096页

作者： ZHU Guangyou WANG Zhengjun WANG Yongjun ZHAO Jie DONG Yuexia WANG Kai LIU Yongchang WANG Jianwei Research Institute of Petroleum Exploration and Development PetroChina petrochina Jidong oilfield

Natural gas exploration in Nanpu sag, Bohai Bay Basin, has achieved breakthroughs in recent years, and a number of natural gas and co.densate wells with high yield have been found in several structures in the beach area. Daily gas production of single wells is up to 170,000 m3, and high-yield wells are mainly distributed in？the Nanpu No. 1 structural belt.？Studies have shown that these natural gases are mainly hydrocarbon gases, with methane co.tent about 80% to 90% and ethane 6%-9%, so they are mainly wet gas; and non-hydrocarbons are at a low level.？Carbon isotopes of methane range from -42‰ to -36‰, and ethane from -28‰ to -26‰. Calculated maturity based on the relationship between δ13C and Ro of natural gas, the gases are equivalent to those generated from organic matter when Ro is 1.0%-1.7% （mainly 1.25%-1.32%）. The natural gas is oil-type gas generated from the source rocks at mature to high mature stage, associated with co.densate, so carbon isotopes of the gases are heavier. Natural gas in the Nanpu No.1 structural belt is mainly associated gas with co.densate. The analysis of the origin and source of natural gas and co.densate, co.bined with the monomer hydrocarbon carbon isotopes and biomarker, indicated that the main source rocks in the Nanpu No.1 structural belt were Es3 （the lower member of the Shahejie Formation）, followed by Es1 （the upper member of the Shahejie Formation）.？The high-mature hydrocarbons from source rocks in the deep sag mainly migrated through deep inherited faults into shallow traps and accumulated to form oil and gas pools. Therefore, there is a great potential for exploring gas in deep layers.

关键词： Deep layer Natural gas co.densate Source rocks Shahejie Formation Nanpu sag,Bohai Bay Basin

Recycle Demetallating Process for Hydrocarbonaceous Feedstocks

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China Petroleum Processing & Petrochemical Technology 2008年第1期10卷 41-47页

作者： Zhang Haibing Luo Lailong Ma Zhongting LüXiurong (Petrochemical Research Institute, Karamay Petrochemical co.plex, petrochina co. ltd., Karamay 834000) Petrochemical Research Institute Karamay Petrochemical Complex PetroChina Co. Ltd. Karamay 834000 China

The development and research on the recycle demetallating process are introduced. It shows the recycle demetallating process is effective on removing metal elements in heavy crude oil, especially with regard to calcium, through co.mercial application in delayed co.ing unit. Finally, the ash co.tent in petroleum co.e can be decreased to less than 0.5%, which co.plies with the IB co.e standard. At the same time, the recycle demetallating process is an environmentally friendly technique, which has little effect on production quality and equipment co.rosion.

关键词： demetallation recycle process industrial application

co.alt doped Fe-Mn@CNTs catalysts with highly stability for lowtemperature selective catalytic reduction of NO_(x)

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Nano Research 2022年第4期15卷 3001-3009页

作者： Pengfei Li Tiezhen Zhang Haixiao Sun Yufeng Gao Yanyuan Zhang Yuanyuan Liu Chengmin Ge Hao Chen Xiaoping Dai Xin Zhang State Key Laboratory of Heavy Oil Processing College of Chemical EngineeringChina University of PetroleumBeijing 102249China petrochina daqing Petrochemical Research Center Daqing 163714China ShanDong DongYuan New Material Technology co. LtdDongying 257300China

In this paper,we report the fabrication of co.alt-doped de-NO_(x)catalyst by pyrolyzing an analogous metal-organic framework-74(MOF-74)co.taining Fe&*** resulted catalyst exhibits distinctive microstructures of manganese,co.alt,and iron immobilized on N-doped carbon nanotubes(CNTs).It is found through experiments that the trimetallic catalyst Fe_(2)Mn_(1)co.(0.5)/CNTs-50 has the best NH_(3)-selective catalytic reduction(SCR)*** Fe_(2)Mn_(1)co.(0.5)/CNTs-50 exhibited excellent water and sulfur resistance and good stability under the harsh gas environment of 250℃ and/or 170℃,NO=NH_(3)=1,000 ppm,8 vol.%O_(2),20 vol.%H2O,1,000 ppm SO_(2),and gas hourly space velocity(GHSV)=75,000 h^(-1).The de-NO_(x)co.version was maintained about 55%and 25%after 192 *** water and sulfur resistance performance were much higher than co.mercial vanadium series *** highly water and sulfur resistance performance may be attributed to the unique co.e-shell microstructure and the synergistic effect of manganese,co.alt,and iron which helps reduce the formation for byproducts(NH_(4)HSO_(4)).This study may promote to explore the development of a high stability catalyst for low-temperature selective catalytic reduction of NO_(x)with NH_(3).

关键词： low-temperature NH_(3)-selective catalytic reduction(SCR) metal-organic framework(MOFs) water and sulfur resistance high stability

Test Research on Special Sucker Rod for Screw Pump

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China Oil & Gas 2006年第4期13卷 35-39页

作者： Zhang Mingyi Chen Mingzhan Li Zhi Research Institute of Production Engineering PetroChina Daqing Oilfield Company Ltd. daqing oilfield Engineering co.pany ltd.

Acco.ding to the statistics of straight thread sucker rods' application in screw pump in daqing oilfield before 2000, the proportion of sucker rods' yearly breakaway reached to 41.6%, taking up 70% of the total wells that were checked. Thus it can be seen that the rods breakaway problem was beco.ing the main barrier restricting screw pump large-scale population and application. Since then, the development work on the special sucker rods for screw pump had been carried on. Through the analysis on the failure position and failure form of the sucker rods', the following co.clusions

关键词：螺杆泵抽油杆设计断裂试验研究

co.trolling the uncertainty in reservoir stochastic simulation

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Petroleum Science 2010年第4期7卷 472-476页

作者： Cui Yong Chi Bo Chen Guo Ouyang Cheng Xia Bairu China University of Geosciences Beijing 100083 China Research Institute of daqing oilfield co.pany ltd. Heilongjiang 163712 China Geological Exploration ＆ Development Research Institute PetroChina Chuanqing Drilling Engineering CompanyChengdu Sichuan 610051 China

Unexpected noise in reservoir stochastic simulation realization may be too high to make the realization useful, especially when there is a lack of hard data. Through discussing the uncertainties, we present two ways to co.trol the uncertainty ratio that is brought by the algorithm of stochastic simulation. By reasonably reducing the random value of the stochastic simulation result, the unexpected values introduced by the residual that associates with random series can be co.trolled. Another way when the data disperse unevenly is to co.trol the stochastic simulation order by grouping the points that need to be simulated to make those points which can be simulated by more neighborhood hard data calculated first. Both methods do not go against the co.e stochastic simulation algorithm.

关键词： Reservoir stochastic simulation hard data Kriging algorithm residual realization

Aco.stic response characteristics of unsaturated porous media

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Science China(Physics,Mechanics & Astronomy) 2010年第8期53卷 1388-1396页

作者： ZHAO HaiBo WANG XiuMing CHEN ShuMin LI LaiLin Research Institute of Exploration and Development Daqing OilField Co.Ltd.Daqing 163712China State Key Laboratory of Aco.stics Chinese Academy of SciencesBeijing 100080China

By employing the plane wave analysis method, the dispersion equations associated with co.pressional and shear waves using Santos’s three-phase poroelastic theory were driven. co.sidering the reservoir pressure, the high frequency co.rections and the co.pling drag of two fluids in pores, the influences of frequency and gas saturation on the phase velocities and the inverse quality factors of four body waves predicted by Santos’s theory were discussed in detail. The theoretical velocities of the fast co.pressional and shear waves were co.pared with the results of the low and high frequency experiments from open publications, respectively. The results showed that they are in good agreement in the low frequency case rather than in the high frequency case. In the latter case, several popular poroelastic models were co.sidered and co.pared with the experimental data. In the models, the results of White’s theory fit the experimental data, but the parameter b in White’s model has a significant impact on the results. Under the framework of the linear visco.lasticity theory, the attenuation mechanism of Santos’s model was extended, and the co.parisons between the experimental and theoretical results were also made with respect to attenuation. For the case of water saturation less than 90%, the extended model makes good predictions of the inverse quality factor of shear wave. There is a significant difference between the experimental and theoretical results for the co.pressional wave, but the difference can be explained by the experimental data available.

关键词： unsaturated porous media poroelastic media phase velocity attenuation

3D visualization of hydraulic fractures using micro-seismic monitoring:Methodology and application

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Petroleum 2022年第1期8卷 92-101页

作者： Chenghua Ou Chenggang Liang Zhaoliang Li Li Luo Xiao Yang State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500China Petroleum Engineering School Southwest Petroleum UniversityChengdu610500China Jiqing Operation Area of petrochina Xinjiang oilfield Branch Fukang831511China Exploration and Development Research Institute of petrochina Qinghai oilfield Branch Dunhuang736200China Southwest Branch of China Petroleum Group Logging co. Ltd.Chongqing400021China Southwest Research Institute of Dongfang Geophysical Exploration co. Ltd.Chengdu610051China

In this paper,a new 3D visualization technical method was developed for hydraulic fractures using micro-seismic *** technical method co.sists of four steps:*** the geologic hydraulic fracture model based on seismic source location data from micro-seismic monitoring;*** a hydraulic fracture indication model,relying on the 3D spatial freeze-frame of micro-seismic monitoring sources from hydraulic fracturing;*** a hydraulic fracture density model using the intensity from the micro-seismic monitoring;and *** a 3D visualization of the hydraulic fractures,relying on the spatial co.straints of the density model,the hydraulic fracture indication model,and the properties of the hydraulic *** proposed technical method was used to produce 3D visualizations of the hydraulic fractures in well X in the Jiao reservoir,China,and the 3D visualizations of the distribution,development,extent and cutting relationships of hydraulic fractures were successfully *** results show that this technical method can be used as a practical and reliable approach to characterize hydraulic fractures.

关键词： 3D visualization Micro-seismic monitoring Hydraulic fracture Jiao reservoir Reservoir modelling

Chemical looping co.version of methane via Fe_(2)O_(3)-LaFeO_(3)calcined from LaFe-MOF precursor

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Chinese Journal of Chemical Engineering 2023年第10期62卷 225-237页

作者： Jitong Deng Yongjun Zhang Xiaopeng Wang Wei Zhang Hongjing Han Haiying Wang Huimin Yuan Yanan Zhang Yanguang Chen co.lege of Chemistry&Chemical Engineering Northeast Petroleum UniversityDaqing 163318China petrochina daqing Petrochemical Research Center Daqing 163714China CNPC Safety and Environmental Technology Research Institute co.ltd. Beijing 102206China

The effective utilization of natural gas resources is a promising option for the implementation of the"dual carbon"***,the capture of carbon dioxide with relatively lower co.centration after the co.bustion of natural gas is the crucial ***,the lattice oxygen is used for chemical cycle co.version of methane to overco.e the shortco.ings mentioned above.A method was proposed to synthesize perovskite for methane cycle co.version using metal organic framework as a *** and pore structure of Fe_(2)O_(3)-LaFeO_(3)co.posite oxides were regulated by precursor synthesis co.ditions and calcination ***,the chemical looping co.version performance of methane was *** results showed that the pure phase precursor of La[Fe(CN)_(6)]·5H_(2)O was synthesized with the specific surface area of 23.91 m^(2)·g^(-1)under the crystallization of 10 h and the pH value ***_(2)O_(3)-LaFeO_(3)was obtained by co.trolled calcination of La[Fe(CN)_(6)]·5H_(2)O and Fe_(2)O_(3)with variable mass *** selectivity of co.(2)can reach more than 99%under the optimal parameters of methane chemical looping co.version:m(Fe_(2)O_(3)):m(LaFeO_(3))=2:1,the reaction temperature is 900℃,the lattice oxygen co.version is less than 40%.Fe_(2)O_(3)-LaFeO_(3)still has good phase and structure stability after five redox reaction and regeneration cycles.

关键词： co.posite Chemical looping co.version Carbon dioxide Metal organic frameworks Lattice oxygen Methane