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petroleum Migration Direction of the Silurian Paleo-pools in the Tarim Basin, Northwest China

Acta Geologica Sinica(English Edition) 2008年第1期82卷 174-183页

作者： LIU Luofu ZHAO Yande HUO Hong CHEN Lixin CHEN Yuanzhuang ZHAO Suping LI Chao LI Shuangwen GUO Yongqiang LI Yan Key Lab for Hydrocarbon Accumulation Mechanism in the China university of petroleum,Ministry of Education Basin and Reservoir Research Center, China university of petroleum,Beijing 102249, China China univ petr Key Lab Hydrocarbon Accumulat Mech Minist Educ Beijing 102249 Peoples R China China univ petr Basin & Reservoir Res Ctr Beijing 102249 Peoples R China

The results obtained in this paper indicate that carbazole-type compounds have high thermal stability and also show stability in oxidation and bio-degradation. This kind of compounds still has a high concentration and complete distribution in the analyzed dry asphalt samples, showing that they are particularly useful in studying petroleum migration of paleo-pool. During the basin＇s first-stage of oil-gas pool formation in the Silurian in Tazhong and Tabei areas of Tarim Basin （at the end of Silurian period） and the second-stage in the Awati area （in Permian）, the petroleum experienced a long-distance migration. During the formation of the Silurian paleo-pools in Tazhong Uplift at the end of Silurian, the petroleum mainly came from the lower and middle Cambrian source rocks in the Manjiaer sag. The petroleum migrated towards the southwest-south entering the Silurian reservoir beds in Tazhong first. Then, it further migrated within Silurian from northwest to southeast along the highs of the Structural Belts to the region of the Silurian pinchout boundary in Tazhong. In Tabei Uplift, during the first-stage of pool formation, the petroleum was also from the lower and middle Cambrian source rocks in the Manjiaer sag. It migrated northwest entering the Silurian reservoir beds in the Tabei Uplift firstly, and then the migration continued in the same direction within the Silurian reservoirs and finally the petroleum was trapped in higher positions. During the second-stage pool formation in the Silurian beds in the areas around Awati sag, the petroleum mainly came from the lower-middle Cambrian source rocks in the Awati sag. The petroleum migrated from the generation center to Silurian reservoirs in all directions around the sag through major paths, and the petroleum was finally trapped in higher locations.

关键词： nitrogen pyrrolic compound carbazole petroleum migration Paleo-poois Silurian Tarim Basin

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Sulfur deposition in sour gas reservoirs:laboratory and simulation study

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petroleum Science 2009年第4期6卷 405-414页

作者： Xiao Guo Zhimin Du Xuefeng Yang Yong Zhang Dekui Fu SW petr univ State Key Lab Oil & Gas Reservoir Geol & Exploita Chengdu 610500 Sichuan Peoples R China

Sulfur deposition in the formation, induced by a reduction in the solubility of the sulfur in the gas phase, may significantly reduce the inflow performance of sour gas wells and some wells in sour gas reservoirs have even become completely plugged with deposited sulfur within several months. Accurate prediction and effective management of sulfur deposition are crucial to the economic viability of sour gas reservoirs. In this paper, a dynamic flow experiment was carried out to investigate formation damage resulting from sulfur deposition using an improved experimental method. The core sample was extracted from the producing interval of the LG2 well, LG gas field in the Sichuan Basin. The experimental temperature was 26 °C and the initial pressure was 19 MPa. The displacement pressure continuously decreased from 19 to 10 MPa, and the depletion process lasted 15 days. Then the core was removed and dried. The core mass and core permeability were measured before and after experiments. Experimental results indicated that the core mass increased from 48.372 g before experiment to 48.386 g afterwards, while the core permeability reduced from 0.726 to 0.608 md during the experiment. Then the core was analyzed with a scanning electron microscope (SEM) and energy-dispersive X-ray mapping. The deposition pattern and micro-distribution of elemental sulfur was observed and the deposited elemental sulfur distributed as a film around the pore surface.

关键词： Sour gas reservoir sulfur deposition experiment numerical simulation formation damage

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经自然腔道取标本手术(NOSES)治疗胃癌的国际共识(2019)

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Gastroenterology Report 2020年第1期8卷 5-10,I0001页

作者： Xu Guan Zheng Liu Amjad Parvaiz Antonio Longo Avanish Saklani Ali AShafik Jian-Chun Cai Charles Ternent Lin Chen Cuneyt Kayaalp Fatih Sumer Fernanda Nogueira Feng Gao Fang-Hai Han Qing-Si He Ho-Kyung Chun Chang-Ming Huang Hai-Yang Huang Rui Huang Zhi-Wei Jiang Jim S Khan Joaquim Manuel da Costa Pereira JosephWNunoo-Mensah Jung Tack Son Liang Kang Keisuke Uehara Ping Lan Le-Ping Li Han Liang Bing-Rong Liu Juan Liu Dan Ma Ming-Yin Shen Mohammad Rashidul Islam Narimantas Evaldas Samalavicius Kai Pan petr Tsarkov Xin-Yu Qin Ricardo Escalante Sergey Efetov Seung Kyu Jeong Suk-Hwan Lee Dong-Hui Sun Li Sun Tatiana Garmanova Yan-Tao Tian Gui-Yu Wang Guo-Jun Wang Guo-Rong Wang Xiao-Qiang Wang William Tzu-Liang Chen Woo Yong Lee Su Yan Zu-Li Yang Gang Yu Pei-Wu Yu Dan Zhao Yun-Shi Zhong Jian-Ping Wang Xi-Shan Wang The International Alliance of NOSES Department of Colorectal Surgery National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingP.R.China Poole Hospital NHS Trust PooleUK European Center of Coloproctology and Pelvic Diseases-Multimedica Hospital MilanItaly Department of GI Surgical Oncology Tata Memorial HospitalMumbaiIndia Department of Colorectal Surgery Cairo UniversityCairoEgypt Department of Gastrointestinal Surgery Zhongshan Hospital of Xiamen UniversityXiamenFujianP.R.China Section of Colon and Rectal Surgery Creighton University School of MedicineOmahaNEUSA Department of General Surgery Chinese People’s Liberation Army General HospitalBeijingP.R.China Department of Gastrointestinal Surgery Inonu UniversityMalatyaTurkey Department of Surgery Hospital de BragaBragaPortugal Department of Colorectal Cancer Surgery the Second Affiliated Hospital of Harbin Medical UniversityHarbinHeilongjiangP.R.China Department of Gastroenterological Surgery Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhouGuangdongP.R.China Department of General Surgery Shandong University Qilu HospitalJinanShandongP.R.China Department of Surgery Kangbuk Samsung HospitalSungkyunkwan University School of MedicineSeoulSouth Korea Department of Gastric Surgery Fujian Medical University Union HospitalFuzhouFujianP.R.China Department of General Surgery Jiangsu Province Hospital of Traditional Chinese MedicineNanjingJiangsuP.R.China Department of Colorectal Surgery PortsmouthHospitals NHSTrustQueen Alexandra HospitalPortsmouthUK King’s College Hospital LondonUK Department of Colorectal Surgery The Sixth Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdongP.R.China Division of Surgical Oncology Department of SurgeryNagoya University School of MedicineNagoyaJapan Department of Gastrointestinal Surgery Shandong Provincial Hospital Affiliated to Shandong UniversityJinanShandongP.R.China Department of Gastric Cancer

At present,natural orifice specimen extraction surgery(NOSES)has attracted more and more attention worldwide,because of its great advantages including minimal cutaneous trauma and post-operative pain,fast post-operative recovery,short hospital stay,and positive psychological impact.However,NOSES for the treatment of gastric cancer(GC)is still in its infancy,and there is great potential to improve its theoretical system and clinical practice.Especially,several key points including oncological outcomes,bacteriological concerns,indication selection,and standardized surgical procedures are raised with this innovative technique.Therefore,it is necessary to achieve an international consensus to regulate the implementation of GC-NOSES,which is of great significance for healthy and orderly development of NOSES worldwide.

关键词： gastric cancer natural orifice specimen extraction surgery transanal specimen extraction transvaginal specimen extraction transoral specimen extraction consensus

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