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| 1 | Inadvertent insertion of nephrostomy tube into the renal vein following percutaneous nephrolithotomy: A case report and literature review显示文摘Percutaneous nephrolithotomy(PCNL)is an effective and well accepted procedure for the treatment of large and complex renal calculi.We encountered a patient with a mis-placed percutaneous nephrostomy drainage tube(PNDT)into the contralateral renal vein re-sulting thrombus formation after undergoing right side PCNL.We placed a temporary filter to prevent embolism and started anti-coagulation therapy immediately and finally the PNDT was removed without bleeding. | Guangju Ge Zhenghui Wang Mingchao Wang Gonghui Li Zuhao Xu Yukun Wang Shawpong Wan | 2020 | Asian Journal of Urology2020，7，1： | 3 |
| 2 | The characteristics of recycling gas drilling technology显示文摘Recycling gas drilling is a new drilling technology. This paper can be divided into three parts, with the purpose of introducing and analyzing the characteristics of this new technology. First, the major equipment characteristic of this technology was introduced. Secondly, compared with conventional gas drilling, Angel's model was used to analyze the wellbore flow characteristics. Due to the closed loop and the effect of back pressure caused by the equipment, the gas flow rate decreases dramatically during drilling. Apart from this, it is also found that the kinetic energy at the casing shoe is always smaller than that at the top of the collar. The proposing of the drilling limit concept points out the basic difference between the two gas drilling technologies. Lastly, according to the results of the theoretical analysis, gas supplement operations for the wellbore must be conducted. Thus, two gas supplement schemes are presented in this paper, to provide some guidance for field operations. | Yang Shunji Liu Gonghui Li Jun | 2012 | Petroleum Science2012，9，1： | 3 |
| 3 | Development and application of wellbore heat transfer model considering variable mass flow显示文摘Dual-gradient drilling technology is being increasingly used in formations with narrow pressure margins.For dual-gradient drilling based on downhole separation,hollow spheres are separated into the annulus at the separator position,resulting in variable mass flow in the wellbore.Thus,existing heat transfer models are no longer suitable for describing wellbore temperature profiles in dual-gradient drilling.This study focused on developing a wellbore heat transfer model that fully considers separated hollow spheres entering the annulus,complex casing programs,and heat sources,for dual-gradient drilling based on downhole separation.The model was solved using an iterative method.Then,the accuracy of the model was verified using temperature data measured from two wells.Finally,the difference in the annular temperature distributions between dual-gradient drilling and conventional single-gradient drilling were investigated,as were the wellbore heat transfer characteristics for dual-gradient drilling.The following major conclusions were drawn:(1)for dualgradient drilling based on downhole separation,at the separator location,the annular fluid temperature does not decrease,but rather increase in the flow direction because of the inflow of hollow spheres;(2)a clear inflection point exists in the annular fluid temperature curve at the location where the separator would be;(3)the magnitude of the mutation of the temperature curve at the inflection point is considerably affected by the heat capacities of the hollow spheres and the pure drilling fluid;(4)under the same change in separation efficiency,distance between the bit and separator,flow rate,and thermal conductivity of formation,the variation range of the fluid temperature at the bottom hole is greater than that at the wellhead. | Jiangshuai Wang Jun Li Gonghui Liu Shujie Liu Meipeng Ren Kuidong Luo Shanxun Tao | 2021 | Underground Space2021，6，3： | 3 |
| 4 | Comparative Study of the Disinfection Effects of Three Types of Conjunctiva Sac Irrigations显示文摘Purpose:The antiseptic effectiveness of 5% anerdian Ⅲ, 0.016% gentamicin,and 0.5% tobramycin solutions in pre-surgical irrigation of conjunctival sac were compared. Methods:A total of 295 cataract patients (302 eyes) who had undergone phacoemulsification aspiration combined with intraocular lens insertion. (IOL).were recruited in this prospective study.Operative eyes were given 0.3% levofloxacin eye drops for 3 days and then were randomized into three treatment groups:anerdian. (A), gentamicin (B) and tobramycin (C).The patients received conjunctival sac irrigation using the respective solutions at 10 minutes preoperatively.Conjunctival sac sampling was performed before and after irrigation and the samples were used for subsequent bacterial culture and swab tests. The positive culture rate was used as the main outcome. Results:The positive rates of bacterial culture before conjunctival sac irrigationwere 17.31% (18 eyes) in group A, 13.86% (14 eyes) in group B and 17.3% (14 eyes) in group C.Post irrigation,the positive rates in the three groups decreased to 5.76% . (6 eyes),5.94% . (6 eyes) and 7.22% (7 eyes), respectively. The positive rates among the three groups did not differ significantly.However,the positive rate in group A only significantly differed before and after the irrigation (P<0.05). No toxic or allergic reactions were observed on the ocular surface of any patient after irrigation. Conclusion: The antiseptic effects of the three types of con junctival sac irrigations did not differ. (Eye Science 2013; 28: 20-23) | Shibin Lin Gonghui Li Huichun Huang | 2013 | Eye Science2013，28，1： | 2 |
| 5 | Neutrope-nia with impaired host defense against microbial infection in micelacking androgen receptor显示文摘 | Kuang-Hsiang Chuang Saleh Altuwaijri Gonghui Li | 2009 | J Exp Med2009，206，5： | 1 |
| 6 | Parameters optimization in deepwater dual-gradient drilling based on downhole separation显示文摘To ensure safe drilling with narrow pressure margins in deepwater, a new deepwater dual-gradient drilling method based on downhole separation was designed. A laboratory experiment was conducted to verify the effectiveness of downhole separation and the feasibility of realizing dual-gradient in wellbore. The calculation of dynamic wellbore pressure during drilling was conducted. Then, an optimization model for drilling parameters was established for this drilling method, including separator position, separation efficiency, injection volume fraction, density of drilling fluid, wellhead back pressure and displacement. The optimization of drilling parameters under different control parameters and different narrow safe pressure margins is analyzed by case study. The optimization results indicate that the wellbore pressure profile can be optimized to adapt to the narrow pressure margins and achieve greater drilling depth. By using the optimization model, a smaller bottom-hole pressure difference can be obtained, which can increase the rate of penetration(ROP) and protect reservoirs. The dynamic wellbore pressure has been kept within safe pressure margins during optimization process, effectively avoiding the complicated underground situations caused by improper wellbore pressure. | WANG Jiangshuai LI Jun LIU Gonghui HUANG Tao YANG Hongwei | 2019 | Petroleum Exploration and Development2019，46，4： | 1 |
| 7 | Targeted and imaging-guided in vivo photodynamic therapy for tumors using dual-function, aggregation- induced emission nanoparticles显示文摘 | Xianhe Sun Abudureheman Zebibula Xiaobiao Dong Gonghui Li Guanxin Zhang Deqing Zhang Jun Qian Sailing He | 2018 | Nano Research2018，11，5： | 1 |
| 8 | Modeling the pressure characteristics of parallel chokes used in managed pressure drilling and related experiments显示文摘Based on the local resistance computation model for a choke valve and using the flow characteristics of choke valves, we studied the relationships between the back pressure of a parallel choke assembly and the opening extent of choke valves and developed a model to characterize the pressure regime of the manifold assembly. A comparison of pressure characteristic curves shows that a parallel choke manifold assembly has obvious advantages over the conventional serial type including high linearity of pressure-regulating characteristics curves, the elimination of the overshoot interval, wider effective regulating interval and the higher system security. Laboratory hydraulic experiments have validated the capability of a back pressure control model for the parallel choke assembly to accurately control pressure. This study is of great theoretical and practical significance to further improve the performance of chokes used in managed pressure well drilling. | Liu Gonghui Zhang Tao Li Jun Yang Yulong | 2012 | Petroleum Science2012，9，3： | 1 |
| 9 | A Cementing Technology for Shale Oil Horizontal Wells显示文摘Organic rich dark shale of Q Formation can be found in many areas(e.g.,in the North of S Basin).The shale target stratum is easy to hydrate and often undergoes spallation.Therefore,centering the casing in the horizontal section of the irregular borehole is relatively difficult.Similarly,achieving a good cementflushing efficiency under complex borehole conditions is a complex task.Through technologies such as centralizer,efficient preflushing,multi-stageflushing and ductile cement slurry,better performances can be achieved.In this study,it is shown that the cementing rate in the DY2H horizontal section is 97.8%,which is more than 34%higher than that of adjacent wells.This cementing matching technology for sidetracking horizontal wells can be used to improve the cementing quality of continental shale and provides a reference for future applications in thisfield. | Yudong Tian Gonghui Liu Yue Qi Jun Li Yan Xi Wei Lian Xiaojie Bai Penglin Liu Xiaoguang Geng | 2023 | Fluid Dynamics & Materials Processing2023，19，11： | 1 |
| 10 | Experimental study of the movement of control fluid in compound perforation显示文摘The interaction between the high pressure gas and the control fluid and the movement mechanism of the control fluid in compound perforation were studied by a series of large-scale experiments,where the movement behavior of the control fluid was observed.The curves of measured pressure were analyzed,a mathematical model for the rigid movement of the control fluid was established,and the movement velocity of control fluid was analyzed.Moreover,the velocity from experimental results and velocity from an analytical solution were contrasted.The movement of the control fluid in the initial stage was similar to the rigid movement;however,the propagation of the pressure wave in the control fluid should be taken into account.Experimental results are significant for research on the movement mechanism of control fluid in compound perforation. | Zhao Xu Liu Gonghui Li Jun Ding Qingxin | 2009 | Petroleum Science2009，6，4： | 0 |
| 11 | Management of major vascular injury in laparoscopic urology显示文摘Objective:During the past three decades,laparoscopy has played a significant role in the management of urological disorders.This study aims to standardize the management of major vascular injury,which is a life-threatening complication in the laparoscopic urological procedures.Methods:A total of 8210 patients with the urological disorder,who underwent laparoscopic surgery at Sir Run Run Shaw Hospital from January 2000 to December 2018,were included in this retrospective study.Patients’data of the laparoscopic major vascular injury were collected and analyzed,and the basic principles of the procedure were summarized.Results:A total of 15(0.18%)cases of major vascular injury were found among the 8210 patients,and 2 of them were converted to open surgery.Although the type of laparoscopic surgery,causes,and management of major vascular injury among the patients were diverse,the main management strategies of major vascular injury in laparoscopic surgery were to keep the vision clear,control bleeding rapidly by clamping and compression,make full preparation for possibly needed liquid resuscitation,and try best to repair under laparoscope.If necessary,converse to open surgery.Conclusion:Although the reported incidence of major vascular injury in laparoscopic urological surgery is extremely low,such injury can result in high morbidity and mortality.It is important to rapidly identify the cause and strictly follow the standardized management for better outcomes. | Sheng Cheng Qiming Zheng Liwei Xu Weiping Zhao Gonghui Li Guoqing Ding | 2020 | Laparoscopic, Endoscopic and Robotic Surgery2020，3，4： | 0 |
| 12 | Comparison of combined laparoscopic ureterolithotomy and flexible ureteroscopy with percutaneous nephrolithotomy for removing large impacted upper ureteral stones with concurrent renal stones显示文摘Objectives:The present study compared the safety and efficacy of combined laparoscopic ureterolithotomy(LU)and flexible ureteroscopy with percutaneous nephrolithotomy(PCNL)for removing large impacted upper ureteral stones with concurrent renal stones.Methods:This study included 52 patients who underwent combined LU and retrograde flexible ureteroscopy for removing renal stones(group A)or PCNL(group B)for removing large upper impacted ureteral stones and concurrent renal stones at our department from January 2014 to December 2016.Patient demographics,stone characteristics,and procedure-related parameters including stone-free rate,operation time,hospital stay after surgery,mean decrease in hemoglobin levels,visual analog scale(VAS)score,auxiliary procedure rate,and complication rate were compared between groups A and B.Results:Results of this study showed that both procedures were effective for removing large impacted upper ureteral stones with concurrent renal stones.The stone-free rate after a single procedure was 95.7%in group A and 89.7%in group B(p?0.62).The operation time was longer in group A than in group B(112.2±23.3 min versus 96.2±16.4 min,p?0.006).However,no significant difference was observed between the two groups with respect to the length of hospital stay after the surgery(5 days versus 6 days,p?0.06).The decrease in hemoglobin levels was significantly higher in group B than in group A(0.64±0.36 g/dL versus1.44±0.65 g/dL,p<0.0001).The mean VAS scores obtained at 24 hours(2.91±1.08 versus 5.10±1.01,p<0.0001)and 48 hours after the surgery(1.09±0.73 versus 2.28±0.96,p<0.0001)were significantly higher for group B than for group A.Moreover,the auxiliary procedure rate was higher in group B than in group A(6.9%versus 0%).Conclusion:These results indicate that both combined LU and flexible ureteroscopy and PCNL are suitable for removing large impacted upper ureteral stones with concurrent renal stones and are associated with a high rate of patients being stone free afterwards.Despite the longer operation time,the combined laparoscopic and endourological procedure may be associated with less postoperative pain and fewer major complications.However,the choice of treatment depends on the preferences of surgeons and patients. | Liwei Xu Youyu Zhang Zhenghui Wang Gonghui Li Shicheng Yu | 2018 | Laparoscopic, Endoscopic and Robotic Surgery2018，1，2： | 0 |
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