耐高温羧甲基胍胶压裂液性能及应用

doi:10.3969/j.issn.2097-2806.2023.10.002

日用化学工业（中英文） ›› 2023, Vol. 53 ›› Issue (10): 1125-1131.doi: 10.3969/j.issn.2097-2806.2023.10.002

耐高温羧甲基胍胶压裂液性能及应用

钟举^1,²,Bauyrzhan Sarsenbekuly¹,殷夏¹,康万利^1,^3,^*()

1.哈萨克斯坦-英国技术大学，哈萨克斯坦阿拉木图 050000
2.中石油江汉机械研究所有限公司，湖北武汉 430021
3.中国石油大学（华东）石油工程学院，山东青岛 266580

收稿日期:2023-06-20 修回日期:2023-09-19 出版日期:2023-10-22 发布日期:2023-10-27
基金资助:
国家自然科学基金海外青年学者资助(52250410349);哈萨克斯坦共和国科学和高等教育部科学委员会(AP113067796)

Performance and application of high-temperature resistant carboxymethyl guar gum fracturing fluid

Zhong Ju^1,²,Sarsenbekuly Bauyrzhan¹,Yin Xia¹,Kang Wanli^1,^3,^*()

1. Kazakhstan British University of Technology, Almaty 050000, Kazakhstan
2. PetroChina Jianghan Machinery Research Institute Co., Ltd., Wuhan, Hubei 430021, China
3. School of Petroleum Engineering, China University of Petroleum （East China）, Qingdao, Shandong 266580, China

Received:2023-06-20 Revised:2023-09-19 Online:2023-10-22 Published:2023-10-27
Contact: *E-mail: kanhwanli@126.com.

摘要/Abstract

摘要：

冀东油田西部探区山2主要为致密气藏，储层致密且温度高，孔渗较差，只有通过压裂改造才能见产。常规胍胶压裂液的耐高温性能差且容易对地层产生二次伤害。为解决此问题，基于螯合作用机理研制出了一种耐高温羧甲基胍胶压裂液，并对其快速增黏性、黏弹性、耐高温耐剪切性能以及对地层伤害性等进行详细研究。结果表明，耐高温羧甲基胍胶压裂液在4 min内黏度可达51 mPa·s，耐温能力可达130~180 ℃，破胶液的黏度小于1.5 mPa·s，能够满足目的层施工要求。最后，针对现场部分低产低效井，采用研制的羧甲基胍胶清洁压裂技术，实现了清洁压裂低伤害，堵老缝开新缝，增加改造体积，低产井产量增加了3~5倍，为西部探区持续稳产奠定了技术支撑。

关键词: 低产高效, 压裂液, 耐高温, 羧甲基胍胶, 暂堵转向

Abstract:

The “Shan-2” in the western exploration area of Jidong Oilfield is mainly a tight gas reservoir with high temperature and poor porosity and permeability, in which the gas can only be produced by fracturing. Conventional guar gum fracturing fluid has poor high-temperature resistance and it is easy to cause secondary damage to the formation. To solve this problem, based on chelation mechanism, a kind of high-temperature resistant carboxymethyl guar gum fracturing fluid was developed. Its rapid thickening, viscoelasticity, high-temperature resistance, shear resistance and formation damage performance were studied in detail. The results showed that, the viscosity of this fracturing fluid could reach 51 mPa·s within 4 minutes. Its temperature resistance could reach 130-180 ℃. The viscosity of the gel breaking fluid was less than 1.5 mPa·s. Therefore, this fracturing fluid could meet the requirements for the target stratum. Finally, for some low-producing and low-efficiency wells in the field, the clean fracturing technology using the carboxymethyl guar gum developed had achieved clean fracturing with low damage. Old cracks were closed and new cracks were opened. The stimulated reservoir volume was increased. The output of low-producing wells had been increased by 3-5 times. This work might provide technical support for continuous and stable production in the western exploration area.

Key words: low production and high efficiency, fracturing fluid, high-temperature resistance, carboxymethyl guar gum, temporary blocking steering

中图分类号:

TE35

钟举, Bauyrzhan Sarsenbekuly, 殷夏, 康万利. 耐高温羧甲基胍胶压裂液性能及应用[J]. 日用化学工业（中英文）, 2023, 53(10): 1125-1131.

Zhong Ju, Sarsenbekuly Bauyrzhan, Yin Xia, Kang Wanli. Performance and application of high-temperature resistant carboxymethyl guar gum fracturing fluid[J]. China Surfactant Detergent & Cosmetics, 2023, 53(10): 1125-1131.

图/表 11

参考文献 11

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Items	Carboxymethyl guar gum
Appearance	Yellow powder
Moisture content/%	7.5
pH	7.0

Gel breaker dosage/%	Viscosity/（mPa·s）
Gel breaker dosage/%	10 min	15 min	20 min	80 min
0.2	Gel	Gel	Gel	4.3
0.3	Gel	Gel	4.0
0.5	Gel	Diluent gel	3.9
1.0	Gel	4.4
1.2	4.5

Core number	Category	Content/%	Crosslinking agent/%	Gas permeability/ （10^-3μm²）	Damage rate/%
1#	High-temperature resistant carboxymethyl guar gum fracturing fluid	0.45	0.6	1.212	42.3
2#	Hydroxypropylguar gum fracturing fluid	0.5	0.6	1.208	57.4

耐高温羧甲基胍胶压裂液性能及应用

Performance and application of high-temperature resistant carboxymethyl guar gum fracturing fluid

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