第33卷第3期 2016年5月
钻井液与完井液
DRILLINGFLUID&COMPLETIONFLUID
doi:10.3696/j.issn.1001-5620.2016.03.010
新型堵漏材料的研制及性能评价
程鹏至，易文，梅林德，操晶
（成都得道实业有限公司，成都610041）
程鹏至等.新型堵漏材料的研制及性能评价[1].钻井液与完井液，2016，33（3）：51-55
Vol.33 No.3 May2016
摘要传统堵漏材料存在一定的“缺陷"，比如矿物颗粒密度过大且脆性太强，配荣易沉降且在架桥成功后会因裂缝闭合而崩解破碎，植物颗粒密度过小配浆易漂浮，经高温高压“水煮”后会变软，贝壳片、云母片脆性大强、不易变形而容易造成“封门”。它们复配堵蒲成功后，在后期作业中，易失效并发生复漏。为解决传统堵漏材料存在的缺陷，通过特殊制备工艺，研制了LCC系列堵漏材料。该材料中LCC100密度在1.30～2.30g/cm之间可调，在25MPa承压破碎率小于 10%，在pH值为12的NaOH溶液中，150℃下热滚48h，强度无明显变化，具有良好的耐压、耐温、耐碱性能；LCC200 刚柔相济；LCC300可在压差作用下以变形的方式深入裂缝封堵，提高封堵强度。实验结果表明，LCC对孔隙型和裂缝型漏失都有较好的封堵效果；LCC在API堵漏仪钢珠床中形成的封堵层可承受7MPa的压力雨不被压穿。以水基或油基钻并液为基液配制的LCC堵漏案，在高温高压堵滞仪中150℃下封堵模形裂缝时可承受20MPa的压力而不崩，并最终可稳压在19.8MPa以上。
关键词井蒲；堵漏材料LCC；刚性颗粒；合金纤维；柔性碎片；承压堵漏
中图分类号：TE282
文献标识码：A
文章编号：1001-5620（2016）03-0051-05
TheDevelopmentandEvaluationofASetofNewLostCirculationMaterial
CHENG Pengzhi, YI Caiwen, MEI Linde, CAO Jing
(ChengduDedao Industrial Co.,Ltd.,Chengdu,Sichuan610094)
Abstract Conventional lost circulation materials (LCM) have some “deficiencies", for example, the particles of mineral LCM have too big density and are too brittle, thus it is easy for the particles to settle down in drilling fluids, and to crush when the formation fractures are closing, The particles of plant LCM have densities that are too low for them to mix evenly with drlling fluid, and are always float at the top of the LCM slurries. These plant LCM become soft at HTHP conditions, no longer suitable for stopping mud losses. Flake LCM, such as seashells and mica, are also too brttle and the mouth of the opening of fractures are easy to be covered by these flake LCM. In subsequent operations, the flakes are eroded away, inducing mud losses to occur again. To solve these problems, a series of new LCM, the LCC series, have been developed using special techniques. In the LCC series, the LCC100 has densities adjustable between 1.30-2.30 g/cm', and the ratio of particles broken at 25 MPa is less than 10%. After hot rolling in NaOH solution with pH 12, no obvious changes in the strength of the particles have been found, meaning that LCC100 has good pressure resistance, aeeaa under pressure, strengthening the plugging and sealing of mud loss channels. It has been demonstrated that LCC series are effective in controlling mud losses into fractures and pores; they remain their integrity at a pressure of 7 MPa on API LCM tester. Oil base or water base LCM slurries made with LCC series can stand 20 MPa on HTHP LCM tester (with wedge-shaped fractures) at 150 °C, without being pierced, and the pressure can be stabilized at 19.8 MPa.
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合，这就需要架桥颗粒有较高的抗压强度。另外，
对于天然裂缝与闭合诱导裂缝并存的井漏，随
着井筒内正压差的增大，天然裂缝进一步扩张，闭合诱导裂缝逐步开启，当正压差消除时诱导裂缝闭
地层裂缝是不规则的，这就要求片状堵漏材料具有柔韧性，可以在压差作用下以折叠变形的方式进人
第一作者简介：程鹏至，1987年生，毕业于西南石油大学并获硕士学位，主要从事钻井液与完井液的研究。E-mail：
chengpzhi@cdddsy.com。万方数据