Research Into Problems of Plugged Submarine Gas Line in the Bo-Xi Oil Field

2008 7th International Pipeline Conference, Volume 1 ◽

10.1115/ipc2008-64110 ◽

2008 ◽

Author(s):

Da Yu ◽

Xiaojiao Cheng

Keyword(s):

Transmission Efficiency ◽

Gas Pipeline ◽

Oil Field ◽

Liquid Volume ◽

Hydrate Plug

Trough research on plugging problems of the submarine gas line in the Bo-Xi oil field, the cause of plugging, composition of plug stuff were found out, and a method to predict the position of hydrate plug is proposed. The accumulated liquid volume and the transmission efficiency of the pipeline were calculated. It is suggested that a special pig was developed to sweep off the accumulated liquid in the gas pipeline and to prevent formation of hydrate plug.

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Improving the efficiency of oilfield electric power distribution

Oil and Gas Power Engineering ◽

10.31471/1993-9868-2019-2(32)-79-87 ◽

2019 ◽

pp. 79-87

Author(s):

Yu. F. Yu. F. Romaniuk ◽

О. V. Solomchak ◽

М. V. Hlozhyk

Keyword(s):

Power Distribution ◽

Reactive Power ◽

Power Transmission ◽

Transmission Efficiency ◽

Active Power ◽

Oil Field ◽

Total Power ◽

Simultaneous Increase ◽

Active Load ◽

Step Down

The issues of increasing the efficiency of electricity transmission to consumers with different nature of their load are considered. The dependence of the efficiency of the electric network of the oil field, consisting of a power line and a step-down transformer, on the total load power at various ratios between the active and reactive components of the power is analyzed, and the conditions under which the maximum transmission efficiency can be ensured are determined. It is shown by examples that the power transmission efficiency depends not only on the active load, but also largely on its reactive load. In the presence of a constant reactive load and an increase in active load, the total power increases and the power transmission efficiency decreases. In the low-load mode, the schedule for changing the power transmission efficiency approaches a parabolic form, since the influence of the active load on the amount of active power loss decreases, and their value will mainly depend on reactive load, which remains unchanged. The efficiency reaches its maximum value provided that the active and reactive components of the power are equal. In the case of a different ratio between them, the efficiency decreases. With a simultaneous increase in active and reactive loads and a constant value of the power factor, the power transmission efficiency is significantly reduced due to an increase in losses. With a constant active load and an increase in reactive load, efficiency of power transmission decreases, since with an increase in reactive load, losses of active power increase, while the active power remains unchanged. The second condition, under which the line efficiency will be maximum, is full compensation of reactive power. Therefore, in order to increase the efficiency of power transmission, it is necessary to compensate for the reactive load, which can reduce the loss of electricity and the cost of its payment and improve the quality of electricity. Other methods are also proposed to increase the efficiency of power transmission by regulating the voltage level in the power center, reducing the equivalent resistance of the line wires, optimizing the loading of the transformers of the step-down substations and ensuring the economic modes of their operation.

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Subsea Gas Pipeline Coiled Tubing Intervention for Hydrate Plug Removal

10.2118/171322-ms ◽

2014 ◽

Author(s):

M. Nepomiluev ◽

V. Streletskaya

Keyword(s):

Gas Pipeline ◽

Coiled Tubing ◽

Hydrate Plug

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Pigging Technique Research of Submarine Gas Line in the Bo-Xi Oil Field

2008 7th International Pipeline Conference, Volume 1 ◽

10.1115/ipc2008-64109 ◽

2008 ◽

Author(s):

Xiaojiao Cheng ◽

Da Yu

Keyword(s):

Flow Rate ◽

Gas Pipeline ◽

Oil Field ◽

Low Flow ◽

Low Flow Rate

In order to deal with the single seal of ball valves and the deformation of the plugged gas pipeline at low flow rate, a foam pig was successfully modified and used in the plugged submarine gas line of the Bo-Xi Oil Field.

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