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常压页岩气油管断裂原因与防腐策略讨论 被引量:3
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作者 冯旻祎 高茂萍 周成香 《广州化工》 CAS 2022年第19期203-204,234,共3页
南川页岩气田2021年某井油管发生腐蚀断裂,给页岩气开采带来了较大的安全隐患。本文主要针对南川页岩气田某井油管断裂现象展开分析,通过对采出气、采出水和腐蚀产物等研究,发现硫酸盐还原菌是造成油管腐蚀穿孔的主要原因,CO_(2)的存在... 南川页岩气田2021年某井油管发生腐蚀断裂,给页岩气开采带来了较大的安全隐患。本文主要针对南川页岩气田某井油管断裂现象展开分析,通过对采出气、采出水和腐蚀产物等研究,发现硫酸盐还原菌是造成油管腐蚀穿孔的主要原因,CO_(2)的存在促进了点蚀的发展,同时,Cl^(-)起到催化与促进点蚀的作用,最终导致油管腐蚀穿孔甚至断裂。为了有效遏制油管穿孔现象,需对井筒加注缓释杀菌剂,并结合对油管涂敷内涂层,实现对油管腐蚀的有效控制。 展开更多
关键词 页岩气 油管 腐蚀 穿孔断裂 硫酸盐还原菌
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Hepatothorax due to a right diaphragmatic rupture related to duodenal ulcer perforation 被引量:1
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作者 Se-Jin Baek Jin Kim Sung-Ho Lee 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第39期5649-5652,共4页
Here, we present the case of a 53-year-old man with a hepatothorax due to a right diaphragmatic rupture related to duodenal ulcer perforation. On admission, the patient complained of severe acute abdominal pain, with ... Here, we present the case of a 53-year-old man with a hepatothorax due to a right diaphragmatic rupture related to duodenal ulcer perforation. On admission, the patient complained of severe acute abdominal pain, with physical examination findings suspicious for a perforated peptic ulcer. Of note, the patient had no history of other medical conditions or recent trauma, and the initial chest radiography and laboratory findings were not specific. A subsequent abdominal computed tomography revealed intrathoracic displacement of the liver, gallbladder, transverse colon and omentum through a right diaphragmatic defect. The patient then underwent an explorative laparotomy that confirmed duodenal ulcer perforation. A primary repair of the duodenal perforation was performed, and the diaphrag-matic defect was repaired using a polytetrafluoroeth-ylene patch after the organs were reduced and the cavity irrigated. This particular case proves interesting as right-sided spontaneous diaphragmatic ruptures are very rare and difficult to diagnose. Additionally, the best treatment for such large diaphragmatic defects is still controversial, especially in cases of intrathoracic or intra-abdominal contamination. 展开更多
关键词 Diaphragmatic rupture Hepatothorax Du-odenal ulcer perforation Polytetrafluoroethylene mesh
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Complications of collagenous colitis
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作者 Hugh James Freeman 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第11期1643-1645,共3页
Microscopic forms of colitis have been described, including collagenous colitis. This disorder generally has an apparently benign clinical course. However, a number of gastric and intestinal complications, possibly co... Microscopic forms of colitis have been described, including collagenous colitis. This disorder generally has an apparently benign clinical course. However, a number of gastric and intestinal complications, possibly coincidental, may develop with collagenous colitis. Distinctive inflammatory disorders of the gastric mucosa have been described, including lymphocytic gastritis and collagenous gastritis. Celiac disease and collagenous sprue (or collagenous enteritis) may occur. Colonic ulceration has been associated with use of nonsteroidal anti-inflammatory drugs, while other forms of inflammatory bowel disease, including ulcerative colitis and Crohn's disease, may evolve from coUagenous colitis. Submucosal "dissection", colonic fractures or mucosal tears and perforation from air insufflation during colonoscopy may occur and has been hypothesized to be due to compromise of the colonic wall from submucosal collagen deposition. Similar changes may result from increased intraluminal pressure during barium enema contrast studies. Finally, malignant disorders have also been reported, including carcinoma and lymphoproliferative disease. 展开更多
关键词 Colonic fractures Colonic perforation Celiac disease Collagenous gastritis Collagenous sprue Cat scratch colon Colon cancer Microscopic colitis
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