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火烧山油田氮气泡沫堵水技术应用研究 被引量:3
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作者 叶俊华 王国先 王惠清 《新疆石油天然气》 CAS 2007年第2期40-42,共3页
火烧山油田是一个特低渗裂缝性油田,经过历年调剖堵水效果逐渐变差,试验过所种堵剂,均不尽人意,终究不能形成一套有效的完善的调剖堵水体系。分析了裂缝性油藏泡沫堵水技术的可行性,针对火烧山油田进行了氮气泡沫堵水的室内研究及现场... 火烧山油田是一个特低渗裂缝性油田,经过历年调剖堵水效果逐渐变差,试验过所种堵剂,均不尽人意,终究不能形成一套有效的完善的调剖堵水体系。分析了裂缝性油藏泡沫堵水技术的可行性,针对火烧山油田进行了氮气泡沫堵水的室内研究及现场应用。从室内实验结果可以看出,泡沫冻胶的封堵率都很高,并且随着HPAM质量分数的增加,封堵能力增强。实际实施效果表明,氮气泡沫堵水技术是可行的,而且具有较好的效果和应用前景。 展开更多
关键词 火烧山油田 裂缝 氮气泡沫 堵水研究 应用效果
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Transcatheter closure of coronary artery fistula using Guglielmi detachable coil 被引量:8
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作者 Muhammad Munawar Bambang B. Siswanto +1 位作者 Ganesha M. Harimurti Thach N. Nguyen 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2012年第1期11-16,共6页
Background Coronary artery fistula (CAF) is a rare anomaly.Transcatheter CAF closure has been introduced using various materials,but only few data are available on the Guglielmi detachable coil (GDC).The advantage... Background Coronary artery fistula (CAF) is a rare anomaly.Transcatheter CAF closure has been introduced using various materials,but only few data are available on the Guglielmi detachable coil (GDC).The advantage of using GDC for transcatheter CAF closure is more controllable,therefore much safer when compared to other coils.This report is about our experience in transcatheter closure of CAF using fibered GDC in our hospital.Methods & Results From 2002 to 2007,there were 10 patients with CAFs (age range:28 to 56 year-old,7 males) who underwent transcatheter CAF closure.There were a total of 19 CAFs which originated from right coronary (n =5),left circumflex (n =3),left anterior descending artery (n =10) and left main trunk (n =1).Median number of coil deployment for each fistula was 3 (range:1 to 6).The pulmonary artery was the most common site of the distal communication of CAFs (n =14),followed by right atrium (n =3),left atrium (n =1) and left ventricle (n =1).Immediate coronary angiography after GDC deployment revealed no residual shunt in 12 (63.2%) CAFs,significant reduction of the flow in 5 (26.3%),while 2 (10.5%) could not be closed due to small size.Nine (90%) patients underwent a repeated angiography within 3 to 8 months.Among 12 CAFs that were occluded immediately post-deployment,there were 2 CAFs with insignificant residual flow.Among 6 CAFs with significantly decreased flow immediately post-deployment,2 were occluded totally in the follow-up angiography.In total,12 (70.5%) CAFs were occluded completely and 5 (29.5%) CAFs still had insignificant residual flow,which did not need any additional coil deployment.During a mean follow up of 4.3 ± 0.7 year,all patients remained symptom and complication free.Conclusions The fibered GDC is a safe and effective method for percutaneous closure of the CAFs. 展开更多
关键词 Coronary artery fistula Transcatheter closure Guglielmi detachable coil
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