网状泡沫材料的堵漏特性研究

迟军; 马川; 尹达; 蒲晓林; 李家学; 王涛

doi:10.3969/j.issn.1001-5620.2017.06.011

网状泡沫材料的堵漏特性研究

doi: 10.3969/j.issn.1001-5620.2017.06.011

1. 中国石油塔里木油田公司, 新疆库尔勒 841000;
2. 西南石油大学石油与天然气工程学院, 成都 610500;
3. 油气藏地质及开发工程国家重点实验室, 成都 610500

基金项目:

国家重大专项“大型油气田及煤层气开发”（2016ZX05020—004）。

详细信息

作者简介:
迟军,1969年生,毕业于石油大学(华东)钻井专业,现在主要从事钻井技术管理工作。电话18139295900;E-mail:liji3211979@163.com。

中图分类号: TE282
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出版历程
- 收稿日期: 2017-08-05
- 刊出日期: 2017-11-30

Study on the Lost Circulation Control Characteristics of a Reticulated Foam

1. PetroChina Tarim Oilfield Division, Korla, Xinjiang 841000;
2. School of Oil & Natural Gas Engineering, Southwest Petroleum University, Chengdu 610500;
3. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500

摘要

摘要: 针对钻井液在长裂缝性漏失问题，室内评价了一种新型网状泡沫堵漏材料，将其与筛网堵漏材料进行对比和复配，研究出针对裂缝性漏失堵漏效果良好的配方。实验结果表明，该堵漏配方具有良好的封堵长裂缝能力，将质量分数为0.08%的网状泡沫（体积分数为4%）加入到原无法成功封堵模拟裂缝的基础配方中后可承压5 MPa，漏失水基钻井液165mL；与质量分数为0.45%筛网堵漏材料复配能使漏失量减少到45 mL，在高密度油基钻井液中也可承压5 MPa，但漏失量相对较大。网状泡沫堵漏材料可压缩变形，适用于各种尺寸裂缝。钻井液在泡沫孔隙中流动阻力大，大量网状泡沫颗粒分布于裂缝中能够形成多个较弱封堵隔墙，缓解了尾部封堵隔墙承受的压力，同时也可以在较窄裂缝中与刚性颗粒共同起到架桥作用。由于网状泡沫堵漏材料在油基钻井液和高温条件下强度变弱，因此更适于在常温水基钻井液中使用，且其来源广泛，经济实用，具有良好的应用前景。
- 钻井液 /
- 地层承压能力 /
- 裂缝性漏失 /
- 网状泡沫 /
- 堵漏材料 /
- 刚性颗粒
Abstract: A new reticulated foam was developed to deal with lost circulation. Laboratory study was conducted on the reticulated foam to examine its ability to control lost circulation in fractured formations with bridging method. A high performance lost circulation control slurry was developed through engineered concentrations of different lost circulation materials (LCMs), comparison between the reticulated foam and screen-type LCMs and compounding of the reticulated foam and screen-type LCMs. This LCM slurry was tried in a well drilled in the piedmont area in Kuche, Tarim, with a high density oil base drilling fluid. It was found that this LCM slurry had the ability of plugging long fractures, and was able to effectively increase the pressure bearing capacity of thief zones and to reduce the total amount of mud lost. The reticulated foam is deformable under pressure, suitable for plugging fractures of different shapes and sizes. Drilling fluid flowing within the foam was experiencing high flow resistance, and large amount of reticulated foam particles distributed inside the fractures formed multiple partitions of lower strengths to hinder the flow of mud, thereby buffering the pressure exerted on the end partition. The reticulated foam particles, along with rigid particles, can also effectively bridge the narrow parts of fractures to hinder mud flow in fractures. The reticulated foam becomes weak in oil base drilling fluids and at high temperatures; it therefore is suitable for use in water base drilling fluids and at low temperatures. The reticulated foam, with its raw materials readily available, is quite cost effective and is expected to find wide application in lost circulation control.
- Drilling fluid /
- Pressure bearing capacity of formation /
- Mud losses into fractured formation /
- Reticulated foam /
- Lost circulation material /
- Rigid particle

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参考文献(13)

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