临盘稠油木质素基自乳化驱油剂的研制及现场应用

doi:10.3969/j.issn.1001-1803.2021.08.001

Abstract

Abstract:

With the decline of international crude oil price, the previous petroleum-based oil-displacing agent （NB-5034A） is difficult to be applied in oil field because of its high cost. To solve this problem, the low cost lignin-based self-emulsification oil-displacing agent was studied. First, according to the characteristics of Linpan heavy oil, the formula of lignin-based self-emulsification oil-displacing agent （NB-50PA） was optimized in the lab; then the effects of concentration, temperature, displacement velocity and mode, rock properties and oil viscosity on oil recovery were evaluated using simulation tests; the application conditions of NB-50PA for Linpan heavy oil were obtained. According to the field experiment, NB-50PA can increase the average recovery of Linpan heavy oil by 24.51%, and the cost is only 1/3 of the previous petroleum-based self-emulsification oil-displacing agent.

Key words: Linpan heavy oil, lignin-based, self-emulsification, oil-displacing agent, field experiment

CLC Number:

TQ423

Wang Zaihua,Zhang Jun,Feng Jiaying,Liu Mudan,Liu Jianguo,Chen Tao. Development and application of lignin-based self-emulsification oil-displacing agent for Linpan heavy oil[J].China Surfactant Detergent & Cosmetics, 2021, 51(8): 697-704.

Figures/Tables 17

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References 18

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配方编号	配方组成
1	LSA,ASO
2	LSA,ET,AS,ASO,AP
3	LSA,AO,ET,ASO,AP,RS,MO
4	LSA,AO,ET,AS,ASO,AP,FS,RS,MO
5	AO,ASO

配方编号	降黏率/%
1	11.50
2	22.31
3	44.56
4	48.30
5	7.31

配方编号	降黏率/%
1	20.83
2	45.68
3	65.42
4	70.00
5	15.62

驱替速度/（mL·min^-1）	水驱驱油率/%	总驱油率/%	驱油率提高值/%
0.2	42.57	61.21	18.64
0.5	42.00	64.67	22.67
1	41.98	66.47	24.49
2	40.03	68.53	28.50

段塞（PV）	水驱驱油率/ %	总驱油率/ %	驱油率提高值/ %	油量/剂量
0.05	41.32	43.36	2.04	20.40
0.1	41.78	47.79	6.01	30.05
0.3	40.26	55.64	15.38	25.63
0.5	41.63	60.88	19.25	19.25

Development and application of lignin-based self-emulsification oil-displacing agent for Linpan heavy oil

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井号		A	B	C	D	E	F	G
日油量/t	试验前	1.32	0.31	0.56	1.31	3.80	2.50	4.52
日油量/t	试验后	1.78	0.72	0.84	1.62	4.77	3.10	5.00
增油百分比/%		34.85	132.26	50.00	23.66	25.53	24.00	10.62
月增油量/t	第1个月	-2.31	0.23	1.32	8.62	15.05	25.28	8.19
	第2个月	0.16	11.01	15.53	8.32	8.92	19.33	6.27
	第3个月	7.64	12.21	-1.25	7.13	9.86	11.33	5.92
	第4个月	8.60	11.96	9.07	10.85	34.57	10.82	11.87
	第5个月	9.21	13.31	8.56	8.97	41.36	10.23	13.64
	第6个月	31.38	10.21	停采	9.44	30.47	14.27	10.77
	第7个月	39.82	12.80	停采	6.73	10.14	18.56	19.05
	第8个月	6.01	12.61	停采	5.49	29.30	18.95	12.36
	第9个月	停采	10.51	停采	10.44	39.19	13.00	16.14
	第10个月	停采	14.32	停采	8.84	39.29	17.33	19.78
	第11个月	停采	12.19	停采	12.53	46.24	16.11	28.07
合计/t		100.51	121.36	33.23	97.36	304.39	175.21	152.06

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温度/℃	黏度/（mPa·s）
50	120
60	57
70	30
80	18

渗透率/mD	驱油率提高值/%
102.3	21.18
232.7	21.34
302.9	21.79
397.3	22.39
460.9	22.67

岩心类型	水驱驱油率/%	总驱油率/%	驱油率提高值/%
低渗岩心	28.53	55.36	26.83
高渗岩心	55.69	67.58	11.89

黏度/（mPa·s）	水驱采收率/%	化学驱采收率/%	总采收率/ %	降黏率/%
120	42.00	22.67	64.67	49
519	31.00	23.88	54.88	55
1 023	28.35	24.36	52.71	67