常压页岩气全电动压裂装备及技术示范应用效果分析

doi:10.13809/j.cnki.cn32-1825/te.2021.03.009

Abstract

Abstract:

With the expansion of domestic shale gas development demand and production capacity, the all-electric fracturing equipment and technology has become the recommended application technology for normal pressure shale gas fracturing engineering due to the low efficiency of conventional fracturing equipment, large environmental pollution and insufficient water power guarantee in the domestic market. This paper focuses on analyzing the demonstration application effect of all-electric fracturing technology in atmospheric shale gas resource block, demonstrating its advantages in shale gas benefit development and green and low-carbon development. Results show that the all-electric fracturing all-electric case can achieve stable high load, high reliable and continuous construction of the large displacement, high construction efficiency, The comprehensive costs of construction equipment, power, labor and maintenance, etc., fell by more than 40 %, pollution emissions by 70 %, the effective control of noise at boundary of atmospheric pressure shale gas can effectively help realize benefit the development and construction of green mining enterprises of the forehead.

Key words: atmospheric shale gas, full electric fracturing, demonstration application, benefit development, green low-carbon

CLC Number:

TE377

Huaicheng YANG,Sujiang XIA,Qiguo GAO, et al. Application effect of full-electric fracturing equipment and technology for normal pressure shale gas[J]. Petroleum Reservoir Evaluation and Development, 2021, 11(3): 348-355.

Figures/Tables 9

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References 26

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设备模块	主要节点	主要控制项目
电动泵送设备	7	精确启动控制、排量控制、限压控制、系统急停、参数控制、报警监控、参数监视
电动混砂设备	7	启停控制、供液控制、液位控制、输砂控制、干添控制、液添控制、泵主程序订单模式集成控制
电动输砂设备	4	启停控制、砂阀和速度控制、余量监控
电动供液设备	2	启停控制、供液速度控制
电动储液设备	3	进出液控制、余量监控、阀门控制
电动混配设备	3	设备启停、配液参数控制、运行状态监控
远程自动供水系统	3	远程启停、液位监控、参数控制

配套设备	型号	参数	配置数量
智能配电装置	PCR-30	输入30 kV;输出10 kV;容量：2.5~25 MVA	1
智能配电装置	PCR-10	输入10 kV;输出10 kV;容量：2.5~25 MVA	1
VFD变频系统	HHE6000-2	输入：30/10 kV;输出：0.6 kV;功率：2×4 500 kW。	5~6
电动泵送设备	HH6000-2	总功率：45 000 kW	10~12
电动混砂设备	HSQ130	20 m³/min	1
电动供液设备	HHAT60	15 m³/min	2
电动混配设备	HPQ720	12 m³/min	2
自动输砂设备	CSG120	容量：120 m³,输砂排量：2.0 m³	1
电控柔性储罐	SHG210	2 100 m³	1
智能控制中心	HHDV-3	iFrac.PC、iFrac.BC、iFrac.View	1
高低压管汇撬	SJGH-20	接口12个,?180/105 MPa或140 MPa	1

样本井序号	破裂压力（MPa）	施工压力（MPa）	最高压力（MPa）	排量区间（m³/min）	最大排量（m³/min）	单泵排量（m³/min）	实际功率（kW）	功率利用率（%）	最高砂比（%）	平均砂比（%）
1	105.2	104.1~102.3	104.1	11~13.0	13.0	1.30	22 896.978	0.51	4	2.6
2	95.8	96.7~99.3	99.3	12~13.0	13.0	1.30	21 841.388	0.49	8	5.0
3	96.5	95.6~101.1	101.1	13~14.9	14.9	1.49	25 487.090	0.57	8	4.8
4	98.9	98.1~105.0	105.0	8~10.5	10.5	1.05	18 653.730	0.42	7	4.5
5	104.1	104~108.1	108.1	7~9.4	9.4	0.94	17 192.316	0.38	8	4.9
6	107.4	104.2~110.7	110.7	4~9.8	9.8	0.98	18 355.330	0.41	8	4.6
7	107.6	98.3~109.1	109.1	0.5~9.6	9.6	0.96	17 720.484	0.40	8	4.7
8	107.8	105.5~111.7	111.7	6~8.5	8.5	0.85	16 064.364	0.36	8	4.8
9	97.6	95~97.8	97.8	13.5~14	14.0	1.40	23 165.538	0.52	12	6.1
10	97.1	95.2~100.2	100.2	14~14.5	14.5	1.45	24 582.192	0.55	13	6.2
11	93.1	96.2~100.4	100.4	13~14	14.0	1.40	23 781.734	0.53	9	5.6
12	97.3	94.9~100.8	100.8	15~16	16.0	1.60	27 287.188	0.61	13	5.7

样本编号	开机待命状态							施工状态
	A区半径50 m		B区半径80 m		C区半径100 m			A区半径50 m		B区半径80 m		C区半径100 m
	A-1	A-2	B-1	B-2	C-1	C-2	A-1	A-2	B-1	B-2	C-1	C-2
1	55.3	62.2	49.9	50.1	47.6	46.9		66.3	65.3	63.3	58.1	61.8	51.2
2	54.7	61.8	49.8	51.4	46.8	47.1		65.9	65.6	63.8	60.1	60.9	51.3
3	56.1	61.8	50.1	50.2	47.3	47.0		64.7	63.1	57.9	59.5	60.7	51.1
4	54.7	60.9	48.7	51.2	48.2	45.3		65.9	65.3	62.7	60.1	60.9	50.5
5	55.1	63.1	48.7	51.1	48.1	47.1		66.5	64.7	63.2	57.8	60.9	51.5
6	56.5	61.8	48.4	51.2	49.2	47.9		67.1	65.8	64.1	59.5	60.9	51.2
7	54.9	61.1	50.1	51.1	47.4	46.5		67.1	66.1	62.7	57.9	60.8	51.2
8	54.9	61.7	48.7	51.2	47.8	45.9		67.1	66.4	61.2	59.1	60.7	50.9
9	57.1	63.5	51.2	51.2	48.1	47.2		68.1	66.1	64.1	59.2	60.9	50.7
10	57.3	61.9	51.3	50.3	48.4	47.2		66.5	66.2	63.5	60.2	61.1	52.4
11	56.1	62.2	51.2	51.1	48.4	46.6		67.2	66.3	62.8	57.4	61.5	50.9
样本平均	55.7	62.0	49.8	50.9	47.9	46.8		66.6	65.5	62.7	58.9	61.0	51.2
区域平均	58.8		50.4		47.4			66.0		60.8		56.1

能耗类型	大气主要污染物排放值
能耗类型	废气（10⁴ m³）	CO₂（t）	SO₂（kg）	NO_x（kg）	烟尘（kg）
柴油	5.70	54.93	179.58	156.34	21.76
电	1.31	12.63	41.30	35.95	5.00
吨标准煤排放系数^[23-24]	0.27	2.60	8.50	7.40	1.03

Application effect of full-electric fracturing equipment and technology for normal pressure shale gas

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压裂类别	成本（万元）
	不同压裂等级施工设备		动力	人工	维护
	105 MPa	140 MPa	动力	人工	维护
常规压裂	1 096	1 536	89	42	60
全电动压裂	634	802	29	23.5	30

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