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Modular zonal fluid sampling and pressure testing technology for production well

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Petroleum Exploration and Development 2022年第2期49卷 438-447页

作者： XU Jianguo YANG Qinghai YI Peng hou Ze JIA Weite FU Tao ZHANG Zonglin YUE Qingfeng Jilin Oilfield Oil&Gas Engineering Research Institute Songyuan 138000China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China Jilin Oilfield Xinmu Production Plant Songyuan 138000China Daqing Oilfield Production Engineering Research Institute Daqing 163453China

To accurately obtain development dynamic data such as zonal pressure and fluid parameters of each oil layer in the late development stage of a high water-cut old oilfield, a modular zonal sampling and testing technology with the characteristics of modularization, full electronic control and rapidity was proposed and developed. Lab testing and on-site testing was carried out. The modular zonal sampling and testing system is composed of 10 functional modules, namely ground control system, downhole power supply module, drainage pump, electronically controlled anchor, electronically controlled packer, electronically controlled sampler, magnetic positioning sub, terminal sub, adapter cable, and quick connector. Indoor tests have confirmed that the performance parameters of each module meet the design requirements. The downhole function modules of the system can withstand pressures up to 35 MPa and temperatures up to 85 ℃. The rubber cylinder of the electronically controlled packer can withstand a pressure difference of more than 10 MPa. The electronically controlled anchor has an anchoring force of greater than 6.9 t, and can be forcibly detached in the event of an accident. The discharge pump has a displacement of 0.8 m;/d and a head of 500 m. The electronically controlled sampler can meet the requirement of taking 500 mL of sample in each of the 3 chambers. Field tests in Jilin Oilfield show that the system can realize rapid isolation and self-check of isolation of a certain production interval downhole, as well as layer-by layer pressure build-up test. The drainage pump can be used to discharge the mixed liquid between the upper and lower packers and near the wellbore to obtain real fluid samples of the tested formation interval. The data obtained give us better understanding on the pay zones in old oilfields, and provide important basis for development plan adjustment, reservoir stimulation, and EOR measures.

关键词： zonal sampling zonal testing modularization full electronic control rapidity enhanced oil recovery fluid sampling pressure testing

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面向大规模集群作业并发规模的数据库连接池优化技术

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物探化探计算技术 2024年第2期46卷 235-241页

作者：师伟王向辉林茂春侯红军程实中国石油东方地球物理公司涿州072751

数据库作为地震勘探处理软件系统的多学科数据存储管理的核心组件,在底层支撑着处理作业的读写访问需求。在当前,随着地震勘探处理技术的飞速发展,大规模集群下处理作业的并发规模也快速扩张,底层数据库采用常规的读写一体化部署方式难... 详细信息

数据库作为地震勘探处理软件系统的多学科数据存储管理的核心组件,在底层支撑着处理作业的读写访问需求。在当前,随着地震勘探处理技术的飞速发展,大规模集群下处理作业的并发规模也快速扩张,底层数据库采用常规的读写一体化部署方式难以支撑大规模并发作业的读写请求。笔者针对地震勘探大规模集群数据资料处理作业并发场景,提出一种“1+N”读写分离部署方式的数据库连接池优化技术,设计了基于数据库服务器节点信息的资源分配器,对并发作业的数据库读写请求进行了合理的优化,并在实验室环境和实际地震勘探数据资料处理生产中进行了验证,能够支撑大规模集群下处理作业长事物、高并发等特征的数据库访问请求。

关键词：数据库读写请求集群作业并发规模

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Percutaneous management in hepatic alveolar echinococcosis:A sum of single center experiences and a brief overview of the literature

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World Journal of Gastrointestinal Surgery 2023年第3期15卷 398-407页

作者： Suat Eren Sonay Aydın Mecit Kantarci Volkan Kızılgöz Akın Levent Düzgün CanŞenbil Okan Akhan Department of Radiology Faculty of MedicineAtatürk UniversityErzurum 25100Turkey Department of Radiology Faculty of MedicineErzincan Binali Yıldırım UniversityErzincan 24100Turkey Department of Radiology Hacettepe UniversityAnkara 06090Turkey

BACKGROUND Hepatic alveolar echinococcosis(HAE)is a serious zoonotic infection that affects *** may have a tumor-like appearance at *** treatment of HAE patients is extremely relaxing for *** is a significant human zoonotic infection caused by the fox tapeworm Echinococcus Multilocularis *** possesses the characteristics of an invasive tumor-like lesion due to its infiltrative growth pattern and protracted incubation *** disease is endemic over central Europe,Asia,and North *** To characterize HAE patients who were treated percutaneously,their outcomes,and the major technical features of percutaneous treatment in *** Patients who were treated with percutaneous cyst drainage and/or percutaneous biliary drainage were included in the *** abnormal coagulation values and solid or non-infected HAE with minor necrotic change were *** Thirty-two patients underwent percutaneous cyst drainage,two patients underwent percutaneous biliary drainage,and four patients underwent percutaneous biliary drainage *** radiology is utilized to drain echinococcal necrosis and abscesses within/without the liver,as well as diseased and clogged bile *** Percutaneous drainage of cyst contents and/or biliary channels using a minimally invasive technique is a very *** cyst drainage with albendazole therapy improves quality of life in patients who are unable to undergo surgery,even when the mass resolves with long-term treatment.

关键词： Interventional Radiology Treatment Alveolar echinococcosis Liver

Chronic otitis media and middle ear variants:Is there relation?

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World Journal of Clinical Cases 2023年第15期11卷 3481-3490页

作者： Fatma Dilek Gokharman Düzgün Can Senbil Sonay Aydin Erdal Karavas Ozge Ozdemir Arzu Gülsah Yalcin Pınar Nercis Kosar Department of Radiology Ankara Training and Research HospitalAnkara 06230Turkey Department of Radiology Erzincan Binali Yildirim UniversityErzincan 24100Turkey Department of Radiology Bandırma 17 Eylül UniversityBalıkesir 10200Turkey

BACKGROUND Chronic otitis media(COM)is an inflammatory disease that lasts for a long *** is common in developing *** loss can result from *** relationship between variations in middle ear anatomy and COM was investigated in our *** To compare the prevalence of middle ear anatomic variations between the cases with COM and healthy *** This retrospective study included 500 patients with COM and 500 healthy *** presence of those variants was determined:Koerner’s septum,facial canal dehiscence,high jugular bulb,jugular bulb dehiscence,jugular bulb diverticulum,sigmoid sinus anterior location and deep tympanic *** A total of 1000 temporal bones were *** incidences of these variants were respectively(15.4%-18.6%),(38.6%-41.2%),(18.2%-4.6%),(2.6%-1.2%),(1.2%-0%),(8.6%-0%),(0%-0%).It was observed that only high jugular bulb(P<0.001)and anteriorly located sigmoid sinus frequencies(P=0.002)in the case group were statistically significantly higher than the control *** COM is a multifactorial disease and variants of middle ear have always been important in terms of potential risk for complication during surgery but rarely associated with COM as an etiology or as a consequence of the *** didn't find a positive correlation between COM and Koerner’s septum and facial canal *** ended up with a significant conclusion with the variants of dural venous sinuses-high jugular bulb,dehiscence of jugular bulb,diverticulum of jugular bulb and anteriorly located sigmoid sinus-that have been studied less and frequently associated with inner ear illnesses.

关键词： Chronic otitis media Radiology Inflammation Hearing loss Mastoid cells Head and neck

Diagnosis of asymptomatic atrial septal aneurysms using two-dimensional color Doppler and contrast transthoracic echocardiography

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中华医学杂志(英文版) 2003年第5期 57-60页

作者： enol Coskun,Cevad ekuri,zgür Bayturan, ,Hasan Yüksel,Osman Saribülbül,Ali Bilge Department of Pediatric Cardiology Faculty of Medicine Celal Bayer University Manisa Turkey Department of Cardiology Faculty of Medicine Celal Bayer University Manisa Turkey Department of Pediatric Cardiology Faculty of Medicine Celal Bayer University Manisa Turkey Department of Cardiovascular Surgery Faculty of Medicine Celal Bayer University Manisa Turkey Department of Cardiology Faculty of Medicine Celal Bayer University Manisa Turkey

Objective To evaluate the dimensions of atrial septal aneurysm (ASA), the presence and characteristics of interatrial shunt, the movement of the wall of the aneurysm, and correlation between these findings and sign and/or symptoms suggesting embolism in Manisa, a district of a western Anatolian city of Turkey. Methods Two thousand five hundred cases were examined by routine transthoracic echocardiography (TTE) in both pediatric and adult cardiology outpatient clinics. ASA was detected in 20 cases and evaluated by two-dimensional color Doppler echocardiography (CDE). The length of the base, the maximum radius and the maximum displacement of ASA were measured. The shunt between the atria was examined by CDE. In cases where a shunt could not be found, galactose and palmitic acid was injected. Standard 12-lead electrocardiogram (ECG) and exercise stress test were also performed. Results No clinical signs or symptoms were found, suggesting a systemic or cerebral embolism. The maximum displacement of ASA was between 2 and 5 mm. All of the aneurysms were localized in the right atrium, and the walls of the aneurysm did not move beyond the base of the left atrium during the maximum displacement. Interatrial shunt was detected in 14 of 20 patients (70%) by CDE and in the remaining six cases by contrast TTE. Frequent ventricular ectopic beats were observed in one patient. Conclusions During routine TTE we observed 0.8% asymptomatic ASA in our population. The use of a contrast agent was found to be a valuable additional method in patients with ASA when the shunt could not be detected by CDE. The risk for embolism is not high when the maximum displacement of the wall of ASA was 5 mm or less and no bulge into the left atrium was observed. Based on our experience with this method, TTE is easy to perform, well-tolerated and acceptable.

关键词： aneurysm · echocardiography · embolism

Evaluation of Terra SAR-X Optic Image Fusion Performance for Image Classification in a Complex Urban Environment

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Evaluation of Terra SAR-X Optic Image Fusion Performance for...

Numerical Computation of the Green's Function of a Layered Media With Rough Interfaces

2012 4th International Conference on Environmental Science and Information Application Technology(ESIAT 2012)

作者： Arzu Erener Gülcan Sarp Sebnem Düzgün Department of Geomatics Engineering Selcuk University Department of Geological Engineering Suleyman Demirel University Department of Mining Engineering & Geodetic and Geographic Information Technologies Middle East Technical University

The main objective of this study includes to evaluate the SAR and optic image fusion performance for image classification in a complex urban environment. The Terra SAR-X (TS-X) SAR image and Quickbird optical data is used as the classifier inputs for land cover/use classification. Initially, multispectral imagery and high-resolution PAN imagery of Quickbird data were fused. After removing the SAR speckle from the SAR image it was fused by the pan sharpened optic image. Both pan sharpened optic image and fused SAR image were classified using the same training set in order to remove the uncertainty caused by training location. The urban environment selected for performance test of proposed approach involves buildings with various shapes and surface materials and some buildings may appear indistinguishable from roads and pavements. Due to this complexity in the region each building type is classified into different classes and then aggregated into one class. Each land cover/use classes are then evaluated by an error matrix for both classification result. The classification result of fused SAR image slightly changes from classification result of pan sharpened optic image for complex urban environment, and it performs well for all types of urban classes.

关键词： Terra SAR-X (TS-X), Fusion, Classification.

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Numerical Computation of the Green's Function of a Layered M...

20000 kN钻机提升设备静载试验装置能力提升改造

2006 7th International Symposium on Antennas, Propagation and EM Theory

作者： Yasemin Altuncu Ibrahim Akduman zgr zdemir Ali Yapar Istanbul Technical University Electrical and Electronics Engineering Faculty 34469MaslakIstanbulTurkey

A method in order to obtain the Green's function of a layered media containing rough interfaces is *** method is based on the assumption that the perturbations of the rough surfaces from the planar ones are objects buried in a layered media with planar *** to some scattering problems show that the Green's function obtained through the proposed method can be effectively used for locally rough surfaces.

关键词： Numerical Computation of the Green's Function of a Layered Media With Rough Interfaces Media

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机械工程师 2024年第10期 104-109页

作者：刘宏亮李淑芳任小伟侯晓东雷广进宝鸡石油机械有限责任公司陕西宝鸡721002 中油国家油气钻井装备工程技术研究中心有限公司陕西宝鸡721002

现有的20000 kN钻机提升设备静载试验装置试验能力和功能已不能满足需要,通过强度和变形计算分析,对其进行了能力提升改造,使其试验能力提升至25000 kN。对改造后的试验装置进行了计量校准,利用该试验装置完成了YC1125游车23000 kN载荷... 详细信息

现有的20000 kN钻机提升设备静载试验装置试验能力和功能已不能满足需要,通过强度和变形计算分析,对其进行了能力提升改造,使其试验能力提升至25000 kN。对改造后的试验装置进行了计量校准,利用该试验装置完成了YC1125游车23000 kN载荷的设计验证试验,验证了试验装置的改造效果。相比于新建试验装置,可节省投资320余万元,并获得良好应用及效益。

关键词：钻机提升设备静载试验装置提升改造

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Evaluation of proximal tubule functions in children with COVID‑19:a prospective analytical study

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World Journal of Pediatrics 2022年第9期18卷 607-612页

作者： Fatma Devrim Elif Böncüoğlu Elif Kıymet ŞahikaŞahinkaya Ela Cem Mine Düzgöl Aybüke Akaslan Kara KamileÖtiken Arıkan AslıKantar Ebru Yılmaz Nida Dinçel Nuri Bayram İlker Devrim Department of Pediatric Nephrology University of Health Sciences Dr.Behçet Uz Child Disease and Pediatric Surgery Training and Research HospitalİzmirTurkey Department of Pediatric Infectious Diseases University of Health Sciences Dr.Behçet Uz Child Disease and Pediatric Surgery Training and Research HospitalİzmirTurkey

Background There are limited numbers of studies focusing on renal efects of coronavirus disease 2019(COVID-19)infection and proximal tubular dysfunction in children with COVID-19 *** purpose of this study was to evaluate the functions of the proximal tubule in hospitalized children with confrmed acute *** The children who were hospitalized for confrmed COVID-19 were included in this prospective descriptive *** presence of at least two of the following four abnormalities was used to diagnose proximal tubule injury:abnormal tubular reabsorption of phosphate,normoglycemic glycosuria,hyperuricosuria,and *** A total of 115 patients were included in the *** a third of the individuals had elevated blood creatinine levels or *** addition,abnormal renal tubular phosphate loss measured by renal tubular phosphate loss was found in 10(8.7%)patients,as was hyperuricosuria in 28.6%.As a result,total proximal tubular dysfunction was found in 24(20.9%)*** One in every fve children with acute COVID-19 infections had proximal tubular dysfunction,according to our ***,the rate of proximal tubular dysfunction was lower than in adults,it should be *** recovery of proximal tubular function in children with COVID-19 should be followed.

关键词： Coronavirus disease 2019(COVID-19) Proteinuria Proximal tubular dysfunction Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2) Tubular reabsorption of phosphate