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

日用化学工业 ›› 2020, Vol. 50 ›› Issue (11): 756-761.doi: 10.3969/j.issn.1001-1803.2020.11.004

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

王田田¹(),李明星^2,³,于淑珍^2,³,张振云^2,³,马建中¹(),吕斌¹

1.陕西科技大学轻工科学与工程学院,陕西西安 710021
2.中国石油长庆油田分公司油气工艺研究院,陕西西安 710021
3.低渗透油气田勘探开发国家工程实验室,陕西西安 710021

收稿日期:2020-02-29 修回日期:2020-10-30 出版日期:2020-11-22 发布日期:2020-11-20
通讯作者: 马建中
作者简介:王田田（1995-）,女,陕西人,硕士研究生,电话:18049342897,E-mail: 17809211548@163.com。
基金资助:
中石油长庆油田油气工艺研究院横向合作科研项目资助(19YH-FW-012)

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

WANG Tian-tian¹(),LI Ming-xing^2,³,YU Shu-zhen^2,³,ZHANG Zhen-yun^2,³,MA Jian-zhong¹(),LV Bin¹

1. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an, Shaanxi 710021, China
2. Research Institute of Oil and Gas Technology, Changqing Oilfield Company, PetroChina, Xi’an, Shaanxi 710021, China
3. National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields, Xi’an, Shaanxi 710021, China

Received:2020-02-29 Revised:2020-10-30 Online:2020-11-22 Published:2020-11-20
Contact: Jian-zhong MA

摘要/Abstract

摘要：

通过对苏里格气田乌*站采出液用破乳剂的筛选评价,系统研究了10种典型破乳剂在破乳温度为25 ℃,破乳剂投加量为1 500 mg/L下对乌*站采出液的破乳效果。结果表明:SW-70与ZX-F302破乳剂的脱水效果最佳,脱水率分别为91.00%和88.30%;VT-1与ZX-F302破乳剂的脱油效果最佳,脱油率均为75.80%。进一步将上述优选出的脱水型破乳剂与脱油型破乳剂进行复配,当SW-70和VT-1的质量比为1:1时,获得破乳效果最佳的复配破乳剂配方,且破乳5 h的脱水率达96.20%,脱油率为90.25%,脱出水中含油率为16.98 mg/L,采出液中的凝析油-水-固体机械杂质悬浮物实现三相分离,油/水界面整齐,固体机械杂质悬浮物絮沉在底部,达到油净水清的效果。

关键词: 凝析油乳液, 破乳剂, 脱水率, 脱油率

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

中图分类号:

TQ423

王田田,李明星,于淑珍,张振云,马建中,吕斌. 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[J]. 日用化学工业, 2020, 50(11): 756-761.

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.

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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

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

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

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