Research and application of the temperature sensitive plugging cement slurry system
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摘要: 温敏形状记忆聚合物是形状记忆材料的一种，其结构中存在记忆起始形状的固定相和随温度变化能可逆地固化和软化的可逆相。本文将这种材料性能应用于石油工程的固井领域，利用温敏聚合物温敏形变的特点，在井下温度升高时激发粒子形变形成大形变体，为封堵漏失层提供架桥结构，解决固井水泥浆防漏堵漏效果差、水泥车不能泵送较大尺寸颗粒的难题。研制的温敏堵漏材料初始粒径1 mm，达到温敏点后体积形变膨胀，应用温度60~140 ℃，加量0~2% BWOC；据此构建的温敏堵漏水泥浆体系，能有效封堵2 mm的缝隙板，承压7 MPa。温敏堵漏水泥浆先后在东北分公司北209井、北8井、北213-1井等的尾管或油层固井中进行了现场应用，尤其在北213-1井的固井堵漏过程中有效解决了固井漏失难题。Abstract: Temperature sensitive shape memory polymer is a kind of shape memory material. In its structure， there are fixed phases that remember the initial shape and reversible phases that can be cured and softened reversibly with temperature. In this paper， these properties of materials are applied to the cementing field of petroleum engineering. The temperature sensitive deformation characteristics of temperature sensitive polymer allows the particle deformation to be excited at high downhole temperature to form a large deformation， which provides a bridge structure for sealing and plugging the lost circulation layer； thus， solving the problems of poor leakage prevention and plugging effect of cementing slurry， and inability of the cement truck to pump large particles. The initial particle size of the temperature sensitive plugging material is 1mm. After reaching the temperature sensitive point， it deforms and expands in volume. The application temperature is 60 to 140℃， and the dosage is 0 to 2%BWOC； The temperature sensitive plugging cement slurry system prepared on these conditions can effectively seal the 2mm slotted plate at 7MPa. The temperature sensitive plugging cement slurry has been applied in North-209 well， North-8 well and North-213-1 well for cementing of the liner or oil bearing layers by the Northeast oil and gas branch company successively， especially in North 213-1 well where it effectively solved the problem of cementing leakage.
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Key words:
- shape memory /
- temperature sensitive materials /
- cement slurry /
- cementing /
- plugging
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[1] 吴天乾，李明忠，蒋新立，等.鄂尔多斯杭锦旗区块低漏失压力井固井工艺技术［J］.复杂油气藏，2018，11（4）：69-73.
[2] [2] 孙威威.海坨区块高效堵漏体系的优化与应用［J］.钻探工程，2021，48（12）：72-78.
[3] [3] 杨现禹，蔡记华，蒋国盛，等.维持页岩井壁稳定的物理封堵模拟和化学抑制实验研究［J］.钻探工程，2021，48（4）：37-46.
[4] [4] 吕斌，侯力伟，王克诚.新型承压堵漏水泥浆体系的室内研究［J］.钻井液与完井液，2011，28（4）：51-53.
[5] [5] 李波，魏周胜，周兵，等.防渗漏水泥浆体系的研究与应用［J］.钻井液与完井液，2012，29（1）：60-62.
[6] [6] 余婷婷，邓建民，李键，等.纤维堵漏水泥浆的室内研究［J］.石油钻采工艺，2007，29（4）：89-91.
[7] [7] Li Shuai， Zhang Jun， Chen Jianjun， et al. Biodegradable body temperature-responsive shape memory polyurethanes with self-healing behavior［J］. Applied Polymers， 2019，59（2）：E310-E316.
[8] [8] Li Shuai， Zhang Jun， Chen Jianjun， et al. Self-healing polycarbonate-based polyurethane with shape memory behavior［J］. Macromol. Res.， 2019，27（7）：649-656.
[9] [9] Thérien-Aubin Héloïse， Gautrot Julien E.， Yu Shao， et al. Shape memory properties of main chain bile acids polymers［J］. Polymer， 2010，51（1）：22-25.
[10] [10] Heng Zhang， Wang Haitao， Wei Zhong， et al. A novel type of shape memory polymer blend and the shape memory mechanism［J］. Polymer， 2009，50（6）：1596-1601.
[11] [11] Nair Devatha P.， Cramer Neil B.， Scott Timothy F.， et al. Photopolymerized thiol-ene systems as shape memory polymers［J］. Polymer， 2010，51（19）：4383-4389.
[12] [12] 郑一泉，任少平，凌有道，等.热感应型形状记忆高分子材料［J］.高分子通报，2006（4）：70-75，92.
[13] [13] 张晟，罗海亚，余志军，等.热致型形状记忆高分子材料的研究进展［J］.高分子材料科学与工程，2008，24（8）：27-31.
[14] [14] 周成飞.形状记忆聚合物泡沫材料的研究进展［J］.橡塑技术与装备，2016，42（20）：4-8.
[15] [15] 童征，裴晓含，沈泽俊，等.橡胶基增强型热致形状记忆复合材料体系［J］.石油勘探与开发，2016，43（6）：1005-1013.
[16] [16] Hughes Baker，李世毅，唐山.形状记忆材料成就贝克休斯防砂系统［J］.石油知识，2016（2）：43.
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