苏里格气田典型区块凝析油采出液用破乳剂的筛选及评价

doi:10.3969/j.issn.1001-1803.2020.11.004

Abstract

Abstract:

Through screening and evaluating the demulsifiers used for the produced fluids of Wu * Station in Sulige Gas Field, 10 typical demulsifiers were systematically studied at the demulsification temperature of 25 ℃ and the demulsifier dosage of 1 500 mg/L. The results showed that SW-70 and ZX-F302 demulsifiers had the best dehydration effect, with dehydration rates of 91.00% and 88.30%, respectively; VT-1 and ZX-F302 demulsifiers had the best deoiling effect, both with a deoiling rate of 75.80%. The above-selected demulsifiers were further compounded to prepare high-efficiency demulsifiers. When the mass ratio of SW-70 to VT-1 was 1:1, a compound demulsifier with the best demulsification effect was obtained. After 5 hours of demulsification, the dehydration rate was 96.20%, and the deoiling rate was 90.25%, and the oil content in the water phase was 16.98 mg/L. The condensate, water and solid-particle impurities in the condensate produced fluid were separated into three phases. The condensate-water interface was neat, and the solid-particle impurities were flocculated at the bottom. After demulsification, the condensate and water were purified.

Key words: condensate fluid, demulsifier, dehydration rate, deoiling rate

CLC Number:

TQ423

WANG Tian-tian,LI Ming-xing,YU Shu-zhen,ZHANG Zhen-yun,MA Jian-zhong,LV Bin. Screening and evaluation of demulsifiers for condensate fluids in typical blocks of Sulige Gas Field[J].China Surfactant Detergent & Cosmetics, 2020, 50(11): 756-761.

Figures/Tables 10

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References 16

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破乳剂名称	破乳剂类型	γ_cmc/（mN·m^-1）	破乳剂名称	破乳剂类型	γ_cmc/（mN·m^-1）
SW-70	非离子型	24.20	YTY-09A	非离子型	28.72
AD-1	非离子型	35.43	QT-2	阳离子型	37.55
ZX-F302	阳离子型	22.74	ZX-F303	阳离子型	25.33
VT-1	阳离子型	21.62	YB-605	阳离子型	38.47
YT-100-3	阴离子型	32.36	YT-100-5	阴离子型	33.50

m（ZX-F302）: m（VT-1）	脱水率/%		脱油率/%		5 h脱出水含油量/（mg·L^-1）	脱出水色	界面情况
m（ZX-F302）: m（VT-1）	0.5 h	5 h	0.5 h	5 h	5 h脱出水含油量/（mg·L^-1）	脱出水色	界面情况
ZX-F302	84.00	88.30	18.05	75.80	38.66	较浑浊	较齐
VT-1	4.80	80.00	54.15	75.80	25.83	较清	较齐
1:1	9.77	63.90	7.22	42.38	43.51	较浑浊	齐
1:2	14.49	82.61	9.78	61.42	18.16	较浑浊	齐
1:3	22.14	81.16	15.82	77.44	25.60	较清	齐
2:1	32.40	86.96	5.56	23.18	32.52	清	较齐
3:1	5.32	43.80	4.32	15.82	21.69	清	齐

m（ZX-F302）:m（SW-70）	脱水率/%		脱油率/%		5 h脱出水含油量/（mg·L^-1）	脱出水色	界面情况
m（ZX-F302）:m（SW-70）	0.5 h	5 h	0.5 h	5 h	5 h脱出水含油量/（mg·L^-1）	脱出水色	界面情况
ZX-F302	84.00	88.30	18.05	75.80	38.66	较浑浊	齐
SW-70	9.61	91.00	18.05	54.15	27.69	较清	较齐
1:1	12.36	58.11	4.82	34.28	59.28	较浑浊	齐
1:2	22.85	63.10	7.22	23.18	60.00	清	齐
1:3	42.16	84.06	11.22	70.52	32.95	较清	齐
2:1	34.56	81.16	15.84	61.47	59.28	清	较齐
3:1	27.92	73.92	12.66	58.42	64.92	较浑浊	齐

m（SW-70）:m（VT-1）	脱水率/%		脱油率/%		5 h脱出水含油量/（mg·L^-1）	脱出水色	界面情况
m（SW-70）:m（VT-1）	0.5 h	5 h	0.5 h	5 h	5 h脱出水含油量/（mg·L^-1）	脱出水色	界面情况
SW-70	9.61	91.00	18.05	54.15	27.69	较清	较齐
VT-1	4.80	80.00	54.15	75.80	25.83	较清	较齐
1:1	43.16	96.20	52.04	90.25	16.98	清	齐
1:2	33.58	86.90	43.32	82.64	54.30	较浑浊	齐
1:3	37.18	60.66	32.46	77.40	31.40	较浑浊	齐
2:1	40.17	70.18	27.62	68.46	35.90	清	较齐
3:1	35.10	76.26	43.20	54.38	63.23	清	齐

Screening and evaluation of demulsifiers for condensate fluids in typical blocks of Sulige Gas Field

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