世界石油天然气工业安全会议论

1、2021/3/10授课：XXX1 Study on Safety in Treatment, Transportation and Injection of Carbon Dioxide in Jilin Oilfield China University of Petroleum (East China) 2010, 09 Shuren Liu The 3rd World Conference on Safety of Oil and Gas Industry WCOGI 2010Beijing 2021/3/10 授课：XXX 2 Contents Introduction Informa

2、tion of CO2 displacement in Jilin Oilfield Dehydration and Purification Safety Analysis Compression and Liquefaction Safety Analysis Transportation Safety Analysis Injection Safety Analysis Conclusions WCOGI 2010Beijing 2021/3/10 授课：XXX 3 Introduction CO2 is a greenhouse gas. Carbon capture and stor

3、age (CCS) is an effective mean to mitigate CO2. - Weyburn project: Canada, first commercial example, started in 2000, inject 5000ton CO2/d, enhanced oil recovery by 16%. - Sleipner project: Norway, started in 1996, inject 2800ton/d WCOGI 2010Beijing 2021/3/10 授课：XXX 4 Introduction Weyburn projectSle

4、ipner project WCOGI 2010Beijing 2021/3/10 授课：XXX 5 Introduction CO2 capture, treatment, transportation and injection technologies attract interest. CO2 displacement in Jilin oilfield (China) started many years ago. - Matching technologies have been formed - Using natural associated CO2 for EOR is pe

5、rforming WCOGI 2010Beijing 2021/3/10 授课：XXX 6 Introduction This paper has focused on - Analyze safety problems and causes in treatment, transportation and injection of CO2 in Jilin oilfield - Put forward well-targeted, technically feasible and economically reasonable safety countermeasure suggestion

6、s WCOGI 2010Beijing 2021/3/10 授课：XXX 7 Information of CO2 Displacement Figure 1 Procedure of the surface CO2 gathering and transporting system 1-Changshen 4 gas well 2-Gas gathering station 3-Dehydration unit 4-Liquefaction unit 5-Storage tank 6-Booster pump 7-8km pipeline 8-Injection station 9-Inje

7、ction wells WCOGI 2010Beijing 2021/3/10 授课：XXX 8 Dehydration and Purification Safety Analysis Molecular sieve dehydration technology is used to dehydrate CO2 in Jilin oilfield Corrosion - Results leakage explosion and other accidents - Measures adding corrosion inhibitors coating on the adsorption t

8、ower WCOGI 2010Beijing 2021/3/10 授课：XXX 9 Hydrate - Results Limiting flow rate Reducing processing gas volume Blocking pipelines - Measures adding hydrate inhibitors increasing gas temperature Dehydration and Purification Safety Analysis WCOGI 2010Beijing 2021/3/10 授课：XXX 10 Low temperature and low

9、pressure liquefaction technology is used in the CO2 liquefaction Jilin oilfield adopts the liquid ammonia refrigerating machine system Compression and Liquefaction Safety Analysis WCOGI 2010Beijing 2021/3/10 授课：XXX 11 Leakage of liquid ammonia - Results poisoning burning or explosion - Measures infl

10、ammable gas detector dress Compression and Liquefaction Safety Analysis WCOGI 2010Beijing 2021/3/10 授课：XXX 12 Transportation Safety Analysis 8km pipeline goes through residential areas, farmland and other areas of intensive human activities. Cause failure of pressure relief valve, bad sealing perfor

11、mance of welds, gaskets and valves, corrosion, external forces and so on WCOGI 2010Beijing 2021/3/10 授课：XXX 13 - Results Pipeline rupture Leakage - Measures Automatic control system Mercaptan and other additives Transportation Safety Analysis WCOGI 2010Beijing 2021/3/10 授课：XXX 14 Injection Safety An

12、alysis Leakage of carbon dioxide through injection well strings - Cement bond logging - Tracer - Ultrasonic detector Corrosion of injection strings - Multi-arm caliper - Electromagnetic thickness measurement tools - Underground imaging device - adding corrosion inhibition, using anti-corrosion steel

13、 pipe and coating of tubing WCOGI 2010Beijing 2021/3/10 授课：XXX 15 Conclusions Analyzed the safety problems caused by CO2 phase change, such as CO2 corrosion, hydrate plugging, gas leakage Put forward effective measures to strengthen the safety of pipeline, station equipment, automatic control system and other aspects of management. WCOGI 2010Beijing 2021/3/10 授课：XXX