CN-121993833-A - Oilfield heating system and control method

CN121993833ACN 121993833 ACN121993833 ACN 121993833ACN-121993833-A

Abstract

The application discloses an oil field heating system and a control method, relates to the technical field of thermal engineering, and discloses the oil field heating system. The heat storage module is also connected with external heat utilization equipment. The heat storage module is used for supplying heat to external heat utilization equipment and the heat storage module, when the heat supply load of the heat supply module is insufficient, the heat storage module is used for supplementing, when the heat supply load of the heat supply module is excessive, the heat storage module is used for saving heat resources, when the heat supply module is not used for supplying heat, the valley electricity is used for storing heat, so that the economic cost is saved, the heat storage module in the oil field heat supply system is introduced, the flexibility and the economy of the heat supply system are greatly improved, the application range is wider, and the energy utilization rate is improved.

Inventors

WANG YUKE
PENG YI
PEI YAN
CHEN YUTING
ZHU YIZHOU
YU HAI

Assignees

中石油深圳新能源研究院有限公司
中国石油天然气股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241104

Claims (10)

1. An oilfield heating system is characterized by comprising a heating module and a heat storage module; The heat supply module is connected with the heat storage module and external heat utilization equipment; the heat storage module is also connected with external heat utilization equipment; The heat supply module is used for outputting heat energy to external heat utilization equipment and outputting residual heat energy to the heat storage module when the heat supply load is excessive; the heat storage module is used for storing the residual heat energy of the heat supply module; the heat storage module is also used for outputting heat energy to external heat utilization equipment when the heat supply load of the heat supply module is insufficient; the heat storage module is also used for storing heat by using valley electricity when the heat supply module stops supplying heat.
2. The oilfield heating system of claim 1, wherein the system further comprises a cascade thermal module; the heat storage module is also connected with the thermal module for the steps; the heat storage module is also used for outputting heat energy to the heat module for the steps; The heat module for the steps is used for converting heat energy into energy with different gradients for heat supply after receiving the heat energy transmitted by the heat storage module.
3. The oilfield heating system of claim 2, wherein the heating module comprises a cogeneration unit; The heat and power cogeneration unit is connected with the heat storage module and external heat utilization equipment; The cogeneration unit is used for outputting heat energy to external heat equipment and outputting hot steam to the heat storage module when the heat supply load is excessive.
4. An oilfield heating system according to claim 3, wherein the heat storage module comprises a steam heat accumulator, a screw compressor, and a heater; The steam heat accumulator is respectively connected with the screw compressor and the thermal module for the steps; The heater is respectively connected with the cogeneration unit and the screw compressor; The steam heat accumulator is used for storing energy through generating saturated water through condensation heat release after receiving hot steam; the steam heat accumulator is also used for flashing saturated water to generate hot steam to supply heat to external heat equipment when the heat supply load is insufficient; The heater is used for heating the air flooding of the cogeneration unit by using valley electricity when the cogeneration unit stops supplying heat, and outputting the heated air flooding to the screw compressor; the screw compressor is used for compressing the heated pan gas into saturated steam by using valley electricity to store heat; the steam heat accumulator is also used for outputting hot steam to supply heat to the heat module for the steps.
5. The oilfield heating system of claim 4, wherein the thermal storage module further comprises a water tank, an energy storage water replenishment pump, and a backheating water replenishment pump; The water tank is connected with the steam heat accumulator through the energy storage water supplementing pump; The water tank is also connected with the cogeneration unit through the regenerative water supplementing pump; The water tank is used for storing equipment water and is also used for supplementing equipment water for the steam heat accumulator and the cogeneration unit.
6. The oilfield heating system of claim 5, wherein the cascade heat module comprises a screw expander; The screw expander is connected with the steam heat accumulator; And the screw expander is used for generating power by expansion after receiving the hot steam output by the steam heat accumulator, and supplying heat through exhaust generated by expansion power generation.
7. A control method, characterized in that it applies an oilfield heating system as defined in any one of claims 1 to 6, the method comprising: Acquiring working condition information of a heat supply module; judging whether the heat supply load of the heat supply module meets the heat utilization requirement of external heat utilization equipment or not based on the working condition information; when the heat supply load meets the heat utilization requirement of external heat utilization equipment, controlling the heat storage module to store redundant heat energy; When the heat supply load does not meet the heat utilization requirement of external heat utilization equipment, controlling the heat storage module to supplement heat energy; When the heat supply module stops supplying heat, the heat storage module is controlled to store heat by using valley electricity.
8. The control method according to claim 7, wherein the step of controlling the heat storage module to store heat using the valley electricity further comprises, when the heat supply module stops supplying heat: When the heat supply load meets the heat utilization requirement of external heat utilization equipment or the heat supply module stops supplying heat, controlling the heat storage module to output heat energy to the cascade heat utilization module; And controlling the heat module for the steps to convert heat energy into energy with different gradients for heat supply.
9. A storage medium, characterized in that the storage medium is a computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the control method according to any one of claims 7 to 8.
10. A computer program product, characterized in that it comprises a computer program which, when executed by a processor, implements the steps of the control method according to any one of claims 7 to 8.

Description

Oilfield heating system and control method Technical Field The application relates to the technical field of thermal engineering, in particular to an oil field heating system and a control method. Background Along with the gradual increase of the installed capacity of new energy, the energy structure starts to develop towards the green, low-carbon and high-efficiency directions, and the cogeneration unit is limited by a 'heat fixed electricity' operation mode in winter heat supply, so that the deep peak regulation target cannot be completed under a certain heat load, the wind abandoning rate is increased, a large amount of new energy is connected to the network to bring larger power grid load fluctuation, the cogeneration unit needs to ensure the heat supply load preferentially, compared with the regulation capability of the unit electric load under the pure condensation condition, the operation flexibility is reduced, the unit keeps a single mode of the pure condensation condition operation in a non-heat supply season, and the operation economy of the unit is also reduced. Disclosure of Invention The application mainly aims to provide an oil field heating system and a control method, and aims to solve the technical problems of poor flexibility and economy of the existing oil field heating system. The application provides an oilfield heating system which comprises a heating module and a heat storage module, wherein the heat storage module is also connected with external heat utilization equipment, the heating module is used for outputting heat energy to the external heat utilization equipment and outputting residual heat energy to the heat storage module when the heat supply load is excessive, the heat storage module is used for storing the residual heat energy of the heating module, the heat storage module is also used for outputting heat energy to the external heat utilization equipment when the heat supply load of the heating module is insufficient, and the heat storage module is also used for utilizing valley electricity to store heat when the heat supply module stops supplying heat. In one embodiment, the system further comprises a heat storage module for the steps, wherein the heat storage module is further connected with the heat storage module for the steps, the heat storage module is further used for outputting heat energy to the heat storage module for the steps, and the heat storage module for the steps is used for converting the heat energy into energy with different gradients for heat supply after receiving the heat energy transmitted by the heat storage module. In one embodiment, the heat supply module comprises a cogeneration unit, wherein the cogeneration unit is connected with the heat storage module and external heat utilization equipment, and is used for outputting heat energy to the external heat utilization equipment and outputting hot steam to the heat storage module when the heat supply load is excessive. In one embodiment, the heat storage module comprises a steam heat accumulator, a screw compressor and a heater, wherein the steam heat accumulator is respectively connected with the screw compressor and the cascade heat module, the heater is respectively connected with the cogeneration unit and the screw compressor, the steam heat accumulator is used for storing energy through saturated water generated through condensation heat release after receiving hot steam, the steam heat accumulator is also used for flashing the saturated water to generate hot steam to supply heat to external heat equipment when the heat supply load is insufficient, the heater is used for heating the air flooding of the cogeneration unit by valley electricity when the cogeneration unit stops supplying heat and outputting the heated air flooding to the screw compressor, and the screw compressor is used for compressing the heated air flooding into saturated steam by valley electricity to store heat and is also used for outputting the hot steam to supply heat to the heat module. In an embodiment, the heat storage module further comprises a water tank, an energy storage water supplementing pump and a backheating water supplementing pump, wherein the water tank is connected with the steam heat accumulator through the energy storage water supplementing pump, is also connected with the cogeneration unit through the backheating water supplementing pump, and is used for storing water for equipment and supplementing water for the steam heat accumulator and the cogeneration unit. In one embodiment, the thermal module for the steps comprises a screw expander, the screw expander is connected with the steam heat accumulator, and the screw expander is used for generating electricity by expansion after receiving hot steam output by the steam heat accumulator and supplying heat through exhaust generated by expansion. In addition, in order to achieve the aim, the application also provides a control method, the method is applied