CO2 Storage Scenario for Dongfang Gas Field Terminal

Abstract

Abstract:

The available CO₂ volume in Dongfang gas reservoir is rather abundant, which brings an important problem, that is, how to bury the CO₂ to realize CO₂ emission reduction. According to the specific situation of Dongfang gas field terminal, four schemes to recycle CO₂ are proposed, including burying on site onshore or offshore and injecting in Weizhou oil field or Bohai oil field for enhancing oil recovery (EOR). On that basis, four utilization programs, all of which include treatment, liquefaction, transportation and burying of CO₂, are put forward. Finally, process calculation, apparatus selection and economic analysis are developed for every scheme. Results show that the first scheme (onshore local storage near Dongfang gas field terminal) possesses the least investment, but no profit. The fourth scheme [EOR/enhancing gas recovery (EOR/EGR) in Bohai Gulf] takes the largest investment. The investment of the second scheme (EGR in Dongfang 1-1 gas field) is less than that of the third scheme (EGR/EOR in Weizhou 12-1 platform). EGR/EOR can always get profit. The optimum scheme should be determined by economic evaluation.

Key words: CO2, treatment, storage, economic evaluation, enhancing recovery

CLC Number:

TE99

Zhi-jun LI, Xi-chong YU, Yu-xing LI, Qing WANG, Bing CHENG. CO₂ Storage Scenario for Dongfang Gas Field Terminal[J]. Ocean Engineering Equipment and Technology, 2015, 2(2): 105-110.

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组分	摩尔分数/%	组分	摩尔分数/%
CO₂	95.1022	C₄H₁₀	0.0005
N₂	0.0742	C₅H₁₂	0.0002
CH₄	0.2880	C₆H₁₄	0.0001
C₂H₆	0.0045	H₂O	4.5283
C₃H₈	0.0011

名称	输送状态	方式	管径/mm	壁厚/mm	总费用/万元
东方终端陆上就地埋存	密相	管道	219.1	4	8130
东方1-1气田EGR或埋存	密相	管道	219.1	4.8	22447
涠洲12-1油田EOR或埋存	一般液态	船运	219.1	3.2	45982
渤海NB 35-2附近EOR或EGR	一般液态	船运	219.1	3.2	159341

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CO₂ Storage Scenario for Dongfang Gas Field Terminal

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