抗高温复合凝胶堵漏剂的研究

巴文轩; 王正良; 王昌军

doi:10.12358/j.issn.1001-5620.2021.06.010

抗高温复合凝胶堵漏剂的研究

doi: 10.12358/j.issn.1001-5620.2021.06.010

长江大学化学与环境工程学院, 湖北荆州 434023

基金项目: 国家自然科学基金“基于数据驱动的深水钻井溢流智能识别与反演解释研究”(51904034)

详细信息

作者简介:
巴文轩，现在主要从事油气田应用化学技术研究工作。电话15166226376；E-mail：15166226376@163.com

通讯作者:
王正良，教授，电话 13972116127；E-mail：wzl9228@126.com

中图分类号: TE254.4
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出版历程
- 收稿日期: 2021-09-21
- 刊出日期: 2021-11-30

Study on High Temperature Resistant Compound Gel Plugging Agent

School of chemistry and environmental engineering, Yangtze University，Jingzhou,Hubei 434023

摘要

摘要: 以钠膨润土、硅酸钠、氢氧化铝、氧化钙、氢氧化镁、矿石粉等为主体材料，并添加黄原胶作为增黏剂，硼砂为交联剂，以重晶石调密度，形成一种新型的无机有机复合凝胶堵漏剂体系，简称CGPLUG。常温下CGPLUG具有良好的流变性能，尤其具有优良的剪切稀释性和触变性，有利于钻井漏失通道中停留，适合不同类型漏失通道堵漏。CGPLUG具有很高的凝胶成胶强度，在80～200 ℃下成胶后，凝胶强度均可达到5000 g/cm²以上，抗温能力可达240 ℃。CGPLUG对不同粒径的石英砂床（4～10目，10～20目，20～40目）均具有良好的堵漏效果，承压强度可达8.0 MPa以上。
- 复合凝胶 /
- 堵漏剂 /
- 触变凝胶 /
- 抗高温 /
- 承压堵漏
Abstract: A new organic-inorganic compound gel plugging agent called CGPLUG was developed by adding sodium bentonite, sodium silicate, aluminum hydroxide, calcium oxide, magnesium hydroxide, ore powder, expansion agent, etc., and xanthan gum, konjac gum as Tackifier borax as cross-linking agent, and add with barite density adjustment. CGPLUG possesses good rheological properties at room temperature, especially excellente shear dilution and thixotropy, which is conducive to stay in the drilling loss channel. It can "stop" and is suitable for plugging different drilling loss channel. The gel strength of CGPLUG can reach more than 5000 g/cm² at 80～200 ℃ temperatures, and the temperature resistance can reach 240 ℃ .CGPLUG has good plugging effect for quartz sand beds of different particle sizes (4～10 mesh, 10～20 mesh, 20～40 mesh) is good, and the Bearing Strength can reach more than 8.0 MPa.
- Composite gel /
- Plugging agent /
- Thixotropicgel /
- Hightemperature resistance /
- Pressure leakage stoppage

HTML全文

图 1 CGPLUG堵漏剂不同静置时间的形态

下载: 全尺寸图片幻灯片

图 2 CGPLUG堵漏剂在不同温度下的固结形态

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图 3 堵漏剂CGPLUG在不同温度恒温168 h的凝胶强度

下载: 全尺寸图片幻灯片

表 1 复合凝胶堵漏剂的流变性能

t_静置/ h	AV/ mPa·s	PV/ mPa·s	YP/ Pa	YP/PV Pa/mPa·s	φ₆/ φ₃	pH
0	38.0	13.0	25.0	1.92	27.0/22.0	12
1	38.5	13.5	25.0	1.85	27.0/22.0	12
2	40.5	14.0	26.5	1.89	28.0/22.0	12
3	40.0	15.0	25.0	1.67	28.0/21.5	12
4	39.0	15.0	24.0	1.60	27.0/21.0	12
5	40.5	16.0	24.5	1.53	28.0/22.0	12
注：考虑到现场应用时，搅拌速度较低，室内用普通搅拌器在低速1000～1500 r/min下配制CGPLUG堵漏剂，可适当增加钠膨润土和黄原胶XC用量，并适当延长搅拌时间，可达到接近的流变性。

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表 2 温度对堵漏剂CGPLUG成胶性能的影响

T/ ℃	凝胶强度/ g·cm^-2	t_成胶/ h	T/ ℃	凝胶强度/ g·cm^-2	t_成胶/ h
80	5003	6.5	160	5316	3.0
100	5324	4.5	180	5466	2.5
120	5322	4.0	200	5456	2.0
140	5263	3.5

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