CN116285922A - 一种转向压裂专用复合暂堵剂及其制备方法 - Google Patents
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Abstract
本发明提供了一种转向压裂专用复合暂堵剂及其制备方法，属于复合暂堵剂技术领域。本发明首先在高速搅拌器中依次加入一定重量份数的丙烯酸树脂、黄原胶、聚碳酸亚丙酯，搅拌均匀制成混合树脂A，放置备用；接着在高速搅拌器中加入一定重量份数的膨润土、改性聚酯纤维、玻璃纤维进行充分搅拌，混合均匀后制成填料B，放置备用；然后在高速搅拌器中加入混合树脂A后，再加入填料B进行搅拌，接着加入过氧化氢二异丙苯进行充分混合，最后加入十二烷基硫酸钠，搅拌均匀，即得所述复合暂堵剂。本发明中的膨润土、改性聚酯纤维、玻璃纤维填料能够维持压裂中的稳定性，丙烯酸树脂、黄原胶、聚碳酸亚丙酯在填堵压裂后期可被高温降解。
Description
本申请是名为《一种用于暂堵转向压裂中的复合暂堵剂制备方法》的专利申请的分案申请，原申请的申请日为2021年02月18日，申请号为202110187539.2。
技术领域
本发明属于复合暂堵剂技术领域，尤其涉及一种转向压裂专用复合暂堵剂及其制备方法。
背景技术
压裂用暂堵剂技术是为了堵塞已经压开的裂缝，憋起压力，并迫使压裂裂缝转向延伸。压裂用暂堵剂技术必须服从三个原则：注得进、堵得住、解得开。所有暂堵剂都是对储层裂缝产生物理性“堵塞”而憋起压力的。但暂堵剂技术首先要解决的是“注得进”问题，只有先“注得进”，才能进一步在储层裂缝中发挥“堵得住”功能。而且在压裂施工发生裂缝转向和压裂施工时，需要暂堵剂在储层裂缝中憋起压力，但是当压裂施工发生裂缝转向和压裂施工完毕后，又需要暂堵的裂缝被解开，发挥增大泄流面积的作用，即遵循暂堵转向技术中的“解得开”原则。而常规暂堵剂注入施工尚且困难、“解得开”就更困难了。
黄原胶是用淀粉作原料经黄单孢杆菌发酵产生的一种新型高分子生物多糖，是由D-葡萄糖、D-甘露糖、葡萄糖醛酸、乙酸和丙酮酸组成的“五糖重复单元”结构聚合体，在水溶液中可能具有双螺旋结构，因此具有一定得稳定性和抗盐性。由于黄原胶分子的特殊结构，其溶液具有同常规瓜尔胶交联冻胶相当的黏弹性，因此黄原胶基液可直接作为压裂液使用。非交联黄原胶压裂液具有配制简便、弹性高携砂性能好、流变性能稳定，适应地下水、海水、采油污水、压裂液返排液等各种高矿化度水质，与胍胶压裂液相比，成本更低。但是目前尚未有人将黄原胶与其他原料组分组配应用到转向压裂专用复合暂堵剂的制备中。
因此，亟需一种充分利用黄原胶，采用可降解树脂与填料制备，且同时具备注入施工容易，堵塞性能优异，可高温降解排出三重优势的转向压裂专用复合暂堵剂。
发明内容
为了解决上述技术问题，本发明提供了一种转向压裂专用复合暂堵剂，由以下重量份数的原料组分构成：黄原胶30-45份、丙烯酸树脂15-30份、聚碳酸亚丙酯15-30份、膨润土10-18份、改性聚酯纤维10-20份、玻璃纤维5-15份、过氧化氢二异丙苯2-5份、十二烷基硫酸钠5-10份；
所述转向压裂专用复合暂堵剂的制备方法包括以下步骤：
S1：首先在高速搅拌器中依次加入所述重量份数的丙烯酸树脂、黄原胶、聚碳酸亚丙酯，搅拌均匀制成混合树脂A，放置备用；
S2：接着在高速搅拌器中加入所述重量份数的膨润土、改性聚酯纤维、玻璃纤维进行充分搅拌，混合均匀后制成填料B，放置备用；
S3：在高速搅拌器中加入上述混合树脂A后，再加入上述填料B进行搅拌，接着加入所述重量份数的过氧化氢二异丙苯进行充分混合，最后加入所述重量份数的十二烷基硫酸钠，搅拌均匀，即得转向压裂专用复合暂堵剂；
所述转向压裂专用复合暂堵剂注入施工容易，堵塞性能优异，并且可高温降解排出。
优选的，所述转向压裂专用复合暂堵剂由以下重量份数的原料组分构成：黄原胶30份、丙烯酸树脂25份、聚碳酸亚丙酯25份、膨润土16份、改性聚酯纤维14份、玻璃纤维7份、十二烷基硫酸钠8份、过氧化氢二异丙5份。
优选的，所述丙烯酸树脂、黄原胶、聚碳酸亚丙酯均为可降解树脂材料。
优选的，所述膨润土、改性聚酯纤维、玻璃纤维均为填料。
优选的，所述十二烷基硫酸钠为分散剂。
与现有技术相比，本发明具有以下有益效果：
本发明通过在丙烯酸树脂、黄原胶、聚碳酸亚丙酯这类可降解树脂材料中加入膨润土、改性聚酯纤维、玻璃纤维填料，以及过氧化氢二异丙苯和十二烷基硫酸钠，同时严格设定各原料组分的用量配比，成功制成一种转向压裂专用复合暂堵剂，且该暂堵剂同时具备注入施工容易，堵塞性能优异，可高温降解排出三重优势。其中膨润土、改性聚酯纤维、玻璃纤维填料能够维持压裂中的稳定性，丙烯酸树脂、黄原胶、聚碳酸亚丙酯在填堵压裂后期可被高温降解。
附图说明
图1为本发明具体实施例中复合暂堵剂的制备步骤图。
具体实施方式
以下结合附图对本发明做进一步描述：
本发明提供了一种用于暂堵转向压裂中的复合暂堵剂制备方法，所述复合暂堵剂的重量组成成分为：黄原胶30-45份、丙烯酸树脂15-30份、聚碳酸亚丙酯15-30份、膨润土10-18份、改性聚酯纤维10-20份、玻璃纤维5-15份、十二烷基硫酸钠5-10份、过氧化氢二异丙苯2-5份；
所述复合暂堵剂的制备方法如附图1所示，具体为：
(1)首先在高速搅拌器中依次加入15-30份的丙烯酸树脂、30-45份的黄原胶、15-30份的聚碳酸亚丙酯，搅拌均匀制成混合树脂A，放置备用；
(2)接着在高速搅拌器中加入10-18份的膨润土、10-20份的改性聚酯纤维、5-15份的玻璃纤维进行充分搅拌，混合均匀后制成填料B，放置备用；
(3)在高速搅拌器中加入混合树脂A后，再加入填料B进行搅拌，接着加入2-5份的过氧化氢二异丙苯进行充分混合，最后加入5-10份的十二烷基硫酸钠，搅拌均匀，制得复合暂堵剂。
具体的，所述丙烯酸树脂、黄原胶、聚碳酸亚丙酯均为可降解树脂材料。
具体的，所述膨润土、改性聚酯纤维、玻璃纤维均为填料。
具体的，所述十二烷基硫酸钠为分散剂。
实施例1
(1)首先在高速搅拌器中依次加入25份的丙烯酸树脂、30份的黄原胶、25份的聚碳酸亚丙酯，搅拌均匀制成混合树脂A，放置备用；
(2)接着在高速搅拌器中加入16份的膨润土、14份的改性聚酯纤维、7份的玻璃纤维进行充分搅拌，混合均匀后制成填料B，放置备用；
(3)在高速搅拌器中加入混合树脂A后，再加入填料B进行搅拌，接着加入5份的过氧化氢二异丙苯进行充分混合，最后加入8份的十二烷基硫酸钠，搅拌均匀，制得复合暂堵剂。
利用本发明所述的技术方案，或本领域的技术人员在本发明技术方案的启发下，设计出类似的技术方案，而达到上述技术效果的，均是落入本发明的保护范围。
Claims (5)
1.一种转向压裂专用复合暂堵剂，其特征在于，由以下重量份数的原料组分构成：黄原胶30-45份、丙烯酸树脂15-30份、聚碳酸亚丙酯15-30份、膨润土10-18份、改性聚酯纤维10-20份、玻璃纤维5-15份、过氧化氢二异丙苯2-5份、十二烷基硫酸钠5-10份；
所述转向压裂专用复合暂堵剂的制备方法包括以下步骤：
S1：首先在高速搅拌器中依次加入所述重量份数的丙烯酸树脂、黄原胶、聚碳酸亚丙酯，搅拌均匀制成混合树脂A，放置备用；
S2：接着在高速搅拌器中加入所述重量份数的膨润土、改性聚酯纤维、玻璃纤维，充分搅拌，混合均匀后制成填料B，放置备用；
S3：在高速搅拌器中依次加入上述混合树脂A和填料B并进行搅拌，接着加入所述重量份数的过氧化氢二异丙苯并充分混合，最后加入所述重量份数的十二烷基硫酸钠，搅拌均匀即得所述转向压裂专用复合暂堵剂；
所述转向压裂专用复合暂堵剂注入施工容易，堵塞性能优异，并且可高温降解排出。
2.根据权利要求1所述的转向压裂专用复合暂堵剂，其特征在于，由以下重量份数的原料组分构成：黄原胶30份、丙烯酸树脂25份、聚碳酸亚丙酯25份、膨润土16份、改性聚酯纤维14份、玻璃纤维7份、十二烷基硫酸钠8份、过氧化氢二异丙5份。
3.根据权利要求1～2任一所述的转向压裂专用复合暂堵剂，其特征在于，所述丙烯酸树脂、黄原胶、聚碳酸亚丙酯均为可降解树脂材料。
4.根据权利要求1～2任一所述的转向压裂专用复合暂堵剂，其特征在于，所述膨润土、改性聚酯纤维、玻璃纤维均为填料。
5.根据权利要求1～2任一所述的转向压裂专用复合暂堵剂，其特征在于，所述十二烷基硫酸钠为分散剂。
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