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| 1 | Profile improvement during CO_2 flooding in ultra-low permeability reservoirs显示文摘Gas flooding such as CO2 flooding may be effectively applied to ultra-low permeability reservoirs, but gas channeling is inevitable due to low viscosity and high mobility of gas and formation heterogeneity. In order to mitigate or prevent gas channeling, ethylenediamine is chosen for permeability profile control. The reaction mechanism of ethylenediamine with CO2, injection performance, swept volume, and enhanced oil recovery were systematically evaluated. The reaction product of ethylenediamine and CO2 was a white solid or a light yellow viscous liquid, which would mitigate or prevent gas channeling. Also, ethylenediamine could be easily injected into ultra-low permeability cores at high temperature with protective ethanol slugs. The core was swept by injection of 0.3 PV ethylenediamine. Oil displacement tests performed on heterogeneous models with closed fractures, oil recovery was significantly enhanced with injection of ethylenediamine. Experimental results showed that using ethylenediamine to plug high permeability layers would provide a new research idea for the gas injection in fractured, heterogeneous and ultra-low permeability reservoirs. This technology has the potential to be widely applied in oilfields. | Zhao Fenglan Zhang Lei Hou Jirui Cao Shujun | 2014 | Petroleum Science2014，11，2： | 12 |
| 2 | Influence of wettability on flow characteristics of water through microtubes and cores显示文摘The flow characteristics of deionized water in hydrophilic and hydrophobic microtubes with diameters of 14.9,5.03 and 2.05 μm are investigated experimentally.The results indicate that the flow characteristics of deionized water in microtubes with diameter of 14.9 μm are in agreement with the classical Hagen-Poiseuille(H-P) equation,but for hydrophilic and hydrophobic microtubes with smaller diameters,the results show significant departure from the prediction of conventional theory,and the discrepancies are influenced by wettability of the microtubes and increase as the Reynolds numbers decrease.Besides,flows of fluid in cores are the macroscopic reflection of flows in countless micron-sized pore throats,the influence of wettability on microscale flow in pore throats will cause the change of seepage characteristic in cores.Therefore,flow experiments of brine through cores with different wettabilities are conducted.The results demonstrate that wettability exerts similar influence on water flows in cores and microtubes. | WANG Fei YUE XiangAn XU ShaoLiang ZHANG LiJuan ZHAO RenBao HOU JiRui | 2009 | Chinese Science Bulletin2009，54，13： | 7 |
| 3 | Experimental investigation on flow characteristics of deionized water in microtubes显示文摘The flow characteristics of deionized water in microtubes with diameters ranging from 2 to 30 μm are investigated. The experimental results show that the flow characteristics in microtubes with diameters of 16 μm and larger ones are in agreement with the classical theory. However, as the diameters are de-creased to 5 and 2 μm, the nonlinear flow characteristics prevail and the results indicate significant departure of flow characteristics from the predictions of the conventional theory, and the smaller the diameters, the larger the departure. As the Reynolds number increases, the degree of nonlinear flow characteristics decrease gradually and the experimental results are approximately equal to the theo-retical expectation. The minimum Reynolds number in this study is only 2.46×10^(-5). | XU ShaoLiang YUE XiangAn HOU JiRui | 2007 | Chinese Science Bulletin2007，52，6： | 6 |
| 4 | Feasibility of Gas Drive in Fang-48 Fault Block Oil Reservoir显示文摘The Fang-48 fault block oil reservoir is an extremely low permeability reservoir, and it is difficult to produce such a reservoir by waterflooding. Laboratory analysis of reservoir oil shows that the minimum miscibility pressure for CO2 drive in Fang-48 fault block oil reservoir is 29 MPa, lower than the formation fracture pressure of 34 MPa, so the displacement mechanism is miscible drive. The threshold pressure gradient for gas injection is less than that for waterflooding, and the recovery by gas drive is higher than waterflooding. Furthermore, the threshold pressure gradient for carbon dioxide injection is smaller than that for hydrocarbon gas, and the oil recovery by carbon dioxide drive is higher than that by hydrocarbon gas displacement, so carbon dioxide drive is recommended for the development of the Fang-48 fault block oil reservoir. | Cui Lining Hou Jirui Yin Xiangwen | 2007 | Petroleum Science2007，4，3： | 3 |
| 5 | Experimental investigation on continuous N_(2) injection to improve light oil recovery in multi-wells fractured-cavity unit显示文摘The purpose of this experimental study is to evaluate the feasibility and oil recovery efficiency of continuous N_(2) injection in a multi-well fractured-cavity reservoir.In this study,the similar criterion of physical simulation was firstly discussed.In order to reveal the mechanism of remaining oil startup and production performance characteristic by continuous N_(2) injection,a visualized twodimensional fractured-cavity model and a three-dimensional pressure resistant model were designed and fabricated respectively based on the similar theory.And the 2D visualized physical experiments and 3D physical experiments were performed with the simulated oil and brine reservoir samples in Tahe oilfield.Four groups of experiments in 2D and 3D model were performed,each of which included bottom water depletion driving,water injection and N_(2) injection.The 2D visualized experiments indicated the main mechanism of N_(2) developing remaining oil was to occupy the high position and replace the attic oil due to gravitational differentiation.Furthermore,both the 2D and 3D experiments demonstrated that higher oil recovery factor could be achieved if N_(2) was injected through high positional wells.The 3D physical model is closer to the real reservoir condition,so the production performance can reflect the real field production process.This paper confirmed the efficiency of continuous N2 flooding in the light oil saturated fractured-cavity reservoir. | Wei Su Jirui Hou Teng Zhao Yuanyuan Xi Can Cui | 2017 | Petroleum2017，3，3： | 3 |
| 6 | Supplement and optimization of classical capillary number experimental curve for enhanced oil recovery by combination flooding显示文摘In the middle of the last century,American scientists put forward the concept of capillary number and obtained the relation curve between capillary number and residual oil through experiments.They revealed that the corresponding residual oil saturation decreased with increasing of capillary number;after capillary number reached up to a limit,residual oil saturation would become stable and did not decrease.These important achievements laid a theoretical base for enhanced oil recovery with chemical flooding.On the basis of the theory,scholars developed chemical flooding numerical simulation software UTCHEM.During the numerical simulation study of combination flooding,the authors found that as the capillary number is higher than the limit capillary number,the changes of the residual oil saturation along with the capillary number differ from the classical capillary number curve.Oil displacement experiments prove that there are defects in classic capillary number experimental curve and it is necessary to mend and improve.Capillary number‘calculation’curve is obtained with a method of numerical simulation calculation and a complete description of capillary number curve is provided;On this basis,combination flooding capillary number experimental curve QL is obtained through experiments,which is different from the classical capillary curve;and based on which,an expression of corresponding combination flooding relative permeability curve QL is given and the corresponding relative permeability parameters are determined with experiments.Further oil displacement experiment research recognizes the cause of the singular changes of the capillary number curve.'Combination flooding capillary number experimental curve QL'and'combination flooding relative permeability curve QL'are written in combination flooding software IMCFS,providing an effective technical support for the application of combination flooding technical research. | QI LianQing LIU ZongZhao YANG ChengZhi YIN YanJun HOU JiRui ZHANG Jian HUANG Bo SHI FengGang | 2014 | Science China(Technological Sciences)2014，57，11： | 2 |
| 7 | Effect of active species in crude oil on the interfacial tension behavior of alkali/synthetic surfactants/crude oil systems显示文摘The effect of active species present in crude oil on the interfacial tension(IFT)behavior of alkali/synthetic surfactants/crude oil systems was studied.The system consisted of heavy alkyl benzene sulfonate,sodium chloride,sodium hydrate and Daqing crude oil.Experimental results indicated that active species would diffuse from oil/aqueous interface to aqueous phase and finally an equilibrium could be reached in the system with increasing contact time.Moreover,the minimum IFT and equilibrium IFT values increased with increasing contact time and a linear relationship existed between dynamic IFT and t-1/2 when IFT value approaching the minimum and after the minimum IFT was reached.This indicated that the dynamic IFT-time behavior was diffusion controlled.The oil and aqueous phases were analyzed by infrared(IR)spectroscopy.IR spectra of oil and aqueous phases illustrated that the content of active species in the oil phase decreased,but the content of active species in the aqueous phase increased after alkali reacted with crude oil.This indicated that the active species present in oil played an important role in reducing IFT. | Liu Liwei Hou Jirui Yue Xiang'an Zhao Ji | 2008 | Petroleum Science2008，5，4： | 2 |
| 8 | Effects of Shear Fracture on In-depth Profile Modification of Weak Gels显示文摘Two sand packs were filled with fine glass beads and quartz sand respectively.The characteristics of crosslinked polymer flowing through the sand packs as well as the influence of shear fracture of porous media on the in-depth profile modification of the weak gel generated from the crosslinked polymer were investigated.The results indicated that under the dynamic condition crosslinking reaction happened in both sand packs,and the weak gels in these two cases became small gel particles after water flooding.The differences were:the dynamic gelation time in the quartz sand pack was longer than that in the glass bead pack.Residual resistance factor(FRR)caused by the weak gel in the quartz sand pack was smaller than that in the glass bead pack.The weak gel became gel particles after being scoured by subsequent flood water.A weak gel with uniform apparent viscosity and sealing characteristics was generated in every part of the glass bead pack,which could not only move deeply into the sand pack but also seal the high capacity channels again when it reached the deep part.The weak gel performed in-depth profile modification in the glass bead pack,while in the quartz sand pack,the weak gel was concentrated with 100 cm from the entrance of the sand pack.When propelled by the subsequent flood water,the weak gel could move towards the deep part of the sand pack but then became tiny gel particles and could not effectively seal the high capacity channels there.The in-depth profile modification of the weak gel was very weak in the quartz sand pack.It was the shear fracture of porous media that mainly affected the properties and weakened the in-depth profile modification of the weak gel. | Li Xianjie Song Xinwang Yue Xiang'an Hou Jirui Fang Lichun Zhang Huazhen | 2007 | Petroleum Science2007，4，1： | 2 |
| 9 | The Yin and Yang actions of North American ginseng root in modulating the immune function of macrophages显示文摘 | AZIKE C G CHARPENTIER P A HOU Jirui | 2011 | Chinese Medicine2011，6，1： | 1 |
| 10 | Synergy of alkali and surfactant in emulsification of heavy oil in brine显示文摘 | Qiang Liu Mingzhe Dong Xiangan Yue Jirui Hou | 2005 | Colloids and Surfaces A: Physicochemical and Engineering Aspects2005，，1： | 1 |
| 11 | The role of viscoelasticity of alkali/ surfactant/polymer solutionsin enhanced oil recovery 显示文摘 | Hou Jirui Liu Zhongchun | 2005 | Journal of Petroleum Science and Engineering2005，47，： | 1 |
| 12 | The role of viscoelasticity of alkali/surfactant/polymer solutions in enhanced oil recovery显示文摘 | Jirui Hou Zhongchun Liu Shufen Zhang Xiang'an Yue Jinzong Yang | 2005 | Journal of Petroleum Science and Engineering2005，，3： | 1 |
| 13 | Stochastic and upscaled analytical modeling of fines migration in porous media induced by low-salinity water injection显示文摘Fines migration induced by injection of low-salinity water(LSW) into porous media can lead to severe pore plugging and consequent permeability reduction. The deepbed filtration(DBF) theory is used to model the aforementioned phenomenon, which allows us to predict the effluent concentration history and the distribution profile of entrapped particles. However, the previous models fail to consider the movement of the waterflood front. In this study, we derive a stochastic model for fines migration during LSW flooding, in which the Rankine-Hugoniot condition is used to calculate the concentration of detached particles behind and ahead of the moving water front. A downscaling procedure is developed to determine the evolution of pore-size distribution from the exact solution of a large-scale equation system. To validate the proposed model,the obtained exact solutions are used to treat the laboratory data of LSW flooding in artificial soil-packed columns. The tuning results show that the proposed model yields a considerably higher value of the coefficient of determination, compared with the previous models, indicating that the new model can successfully capture the effect of the moving water front on fines migration and precisely match the effluent history of the detached particles. | Yulong YANG Weifeng YUAN Jirui HOU Zhenjiang YOU Jun LI Yang LIU | 2020 | Applied Mathematics and Mechanics(English Edition)2020，41，3： | 1 |
| 14 | Evaluation of oil- tolerant foam for enhanced oil recovery : Laboratory study of a sys- tem of oil-tolerant foaming agents 显示文摘 | Duan Xianggang Hou Jirui Cheng Tinging | 2014 | Journal of Petroleum Science and Engineering2014，30，2： | 1 |
| 15 | Study on the Variation Rule of Produced Oil Components during CO_(2) Flooding in Low Permeability Reservoirs显示文摘CO_(2) flooding has been widely studied and applied to improve oil recovery from low permeability reservoirs.Both the experimental results and the oilfield production data indicate that produced oil components(POC)will vary during CO_(2) flooding in low permeability reservoirs.However,the present researches fail to explain the variation reason and rule.In this study,the physical model of the POC variation during CO_(2) flooding in low permeability reservoir was established,and the variation reason and rule were defined.To verify the correctness of the physical model,the interaction rule of the oil-CO_(2) system was studied by related experiments.The numerical model,including 34 components,was established based on the precise experiments matching,and simulated the POC variation during CO_(2) flooding in low permeability reservoir at different inter-well reservoir characteristics.The POC monitoring data of the CO_(2) flooding pilot test area in northeastern China were analyzed,and the POC variation rule during the oilfield production was obtained.The research results indicated that the existence of the inter-well channeling-path and the permeability difference between matrix and channeling-path are the main reasons for the POC variation during CO_(2) flooding in low permeability reservoirs.The POC variation rules are not the same at different inter-well reservoir characteristics.For the low permeability reservoirs with homogeneous inter-well reservoir,the variation of the light hydrocarbon content in POC increases initially followed by a decrease,while the variation of the heavy hydrocarbon content in POC is completely opposite.The carbon number of the most abundant component in POC will gradually increase.For the low permeability reservoirs with the channeling-path existing in the inter-well reservoir,the variation rule of the light hydrocarbon content in POC is increase-decrease-increase-decrease,while the variation rule of the heavy hydrocarbon content in POC is completely opposite.The carbon number variation rule of the most abundant component in POC is increase-decrease-increase. | Ganggang Hou Tongjing Liu Xinyu Yuan Jirui Hou Pengxiang Diwu | 2020 | Computer Modeling in Engineering & Sciences2020，，6： | 0 |
| 16 | An enhanced oil recovery technique by targeted delivery ASP flooding显示文摘Aiming at the problem of the loss of the ASP flooding near the injection wells, this paper gives a new idea to enhance oil recovery called 'Technique of Targeted Delivery', which combines the radial horizontal well with ultra-short radius drilled by high pressure water jet with the ASP flooding, the horizontal wells work as the 'Target channel' transport the ternary composite system to the remaining oil enrichment area directly, to avoid the loss of the ternary composite system near the injection wells. The plate homogeneous experiment and numerical simulation show that the technique can significantly improve the sweep efficiency and the effect of the oil displacement, and greatly improve the oil recovery rate. The optimal flooding parameters of the target transport technique are: the right angle target, the length of the channel is about 15% of the well distance and the injection volume of the ternary composite system is 0.4 PV. Under such conditions, this technique can enhance recovery by 48.87% and 22.04% respectively, compared with the water flooding and conventional ASP flooding. The target transport technique solves the problem of high loss of chemical agent in near-wellbore area during the ASP flooding, and compensates for the high cost of ASP flooding and the limitation of application, and has a broad application prospect. | WU Fan HOU Jirui WANG Zhiming MA Yunfei WANG Dongying | 2018 | Petroleum Exploration and Development2018，45，2： | 0 |
| 17 | Imbibition mechanisms of high temperature resistant microemulsion system in ultra-low permeability and tight reservoirs显示文摘Lower-phase microemulsions with core-shell structure were prepared by microemulsion dilution method.The high temperature resistant systems were screened and the performance evaluation experiments were conducted to clarify the spontaneous imbibition mechanisms in ultra-low permeability and tight oil reservoirs,and to direct the field microfracture huff and puff test of oil well.The microemulsion system(O-ME)with cationic-nonionic surfactant as hydrophilic shell,No.3 white oil as oil phase core has the highest imbibition recovery;its spontaneous imbibition mechanisms include:the ultra-low interfacial tension and wettability reversal significantly reduce oil adhesion work to improve oil displacement efficiency,the nanoscale“core-shell structure”formed can easily enter micro-nano pores and throats to expand the swept volume,in addition,the remarkable effect of dispersing and solubilizing crude oil can improve the mobility of crude oil.Based on the experimental results,a microfracture huff and puff test of O-ME was carried out in Well YBD43-X506 of Shengli Oilfield.After being treated,the well had a significant increase of daily fluid production to 5 tons from 1.4 tons,and an increase of daily oil production to 2.7 tons from 1.0 ton before treatment. | XIAO Lixiao HOU Jirui WEN Yuchen QU Ming WANG Weiju WU Weipeng LIANG Tuo | 2022 | Petroleum Exploration and Development2022，49，6： | 0 |
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