深部煤层气油电混驱压裂设备配置与工艺技术

doi:10.13809/j.cnki.cn32-1825/te.2025.02.014

Abstract

Abstract:

In order to address the technical challenges in equipment configuration for hybrid oil-electric fracturing in deep coalbed methane reservoir modification, this study used the configuration of hybrid oil-electric fracturing equipment for deep coalbed methane at the Jishen 11-7A platform in the Daning-Jixian block on the eastern edge of the Ordos Basin as a case study. Specific configuration requirements were proposed in aspects such as the calculation of fracturing pump group power, power grid capacity calculation considering power loss in transmission lines and auxiliary system power, the capacity of transportation and sand mixing equipment, calculation of the liquid supply capacity for the low-pressure manifold system, and the functions of the high-pressure manifold system and instrument skid. A method for calculating the configuration of hybrid oil-electric fracturing equipment for deep coalbed methane was proposed by integrating fracturing operation requirements with equipment performance and applied to three wells on the platform. The application results showed that the developed configuration method met the requirements for high pressure, large displacement, high sand ratio, large sand volume, and 24-hour continuous fracturing operations in deep coalbed methane. With a pump power reserve factor of 1.3, the power redundancy factor was 1.46. The applied capacity of 19 000 kVA exceeded the total line demand of 18 269 kVA, meeting power demand. The capabilities of sand transportation, sand mixing, and low-pressure liquid supply equipment also met operational requirements. Fracturing operations at the Jishen 11-7A platform began on March 10, 2024, and concluded on March 31, 2024. The operating pressure ranged from 55 to 75 MPa, with a displacement of 19 to 20 m³/min and 14 to 16 m³/min in risk zones. The sand ratio ranged from 6% to 24%, with a maximum single-pump displacement of 2.0 m³/min. The three wells had a total liquid volume of 73 926.7 m³, including 36 458.1 m³ from the electric pump, with a total electricity consumption of 719 200 kW⋅h. A total of 34 fracturing sections across 3 wells were finished, completing the reservoir reconstruction of the horizontal wells of China’s First Hybrid Oil-Electric Deep Coalbed Methane Platform. The findings provide a method for configuring fracturing equipment in deep coalbed methane operations and offer insights for fracturing equipment configuration in other oil and gas blocks in China.

Key words: deep coalbed methane, hybrid oil-electric fracturing, equipment configuration, operation mode, Daning-Jixian block

CLC Number:

TE934

ZHAO Chongsheng,WANG Bo,GOU Bo, et al. Equipment configuration and process technology of hybrid oil-electric fracturing for deep coalbed methane[J]. Petroleum Reservoir Evaluation and Development, 2025, 15(2): 292-299.

Figures/Tables 10

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References 24

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冲次/(s/min)	柱塞尺寸
	3.75″（92.25 mm）		4″（101.6 mm）		4.5″（114.3 mm）		5″（127 mm）
	排量/（m³/min）	压力/MPa	排量/（m³/min）	压力/MPa	排量/（m³/min）	压力/MPa	排量/（m³/min）	压力/MPa
80	0.87	140	0.99	120	1.25	95	1.54	77
120	1.30	140	1.48	120	1.88	95	2.32	77
160	1.74	140	1.98	120	2.50	95	3.09	77
180	1.96	128	2.22	112	2.82	89	3.48	72
200	2.17	115	2.47	101	3.13	80	3.86	65
230	2.50	100	2.84	88	3.60	70	4.44	56

参数	数值
排量/（m³/min）	12
压力/MPa	80
泵组压裂负荷功率/kW	16 003.2
辅助设备用电功率/kW	800
用电终端有功功率/kW	16 803.2
功率因数	0.95
用电终端容量/kVA	17 688
用电终端无功功率/kVar	5 523
负荷电流/A	277
线路长度/km	10
电缆线每千米电阻/（Ω/km）	0.138
线路电缆线电阻/Ω	1.38
电缆线每千米感抗/（Ω/km）	0.369
线路电缆线电抗/Ω	3.69
线路有功损耗功率/kW	318
线路无功损耗功率/kVar	851
线路总计有功功率/kW	17 121
线路总计无功功率/kVar	6 373
线路总计容量/kVA	18 269

Equipment configuration and process technology of hybrid oil-electric fracturing for deep coalbed methane

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用电设备	数量/台	单台功率/kW	负荷/kW
电动压裂泵橇辅助系统	10	50	500
电动混砂撬	1	200	200
营区	1	100	100

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