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发明公开
CN105778874A 钻井井下交联凝胶堵漏剂及其堵漏方法 无效 - 驳回

钻井井下交联凝胶堵漏剂及其堵漏方法
摘要：
本发明涉及一种钻井井下交联凝胶堵漏剂及其堵漏方法。以堵漏剂的重量百分含量为100％计，其组分包括高分子聚合物10％?30％、交联剂10％?30％、促凝剂或缓凝剂0％?20％、高分子纤维10％?30％、增韧剂2％?10％和分散剂10％?30％。在上述堵漏剂中，通过促凝剂缩短交联时间，通过缓凝剂延长交联时间，促凝剂或缓凝剂也可以不加入配方。此堵漏剂具有很好的堵漏效果，同时具备驻留与承压能力，并且承压能力强、成胶时间基本不受盐侵、钻屑等的影响。
摘要（英）：

The invention relates to a downhole drilling crosslinked gel leak stopping agent and a leak stopping method thereof. Taking weight percent of the leak stopping agent as 100%, the leak stopping agent comprises 10-30% of a macromolecular polymer, 10-30% of a crosslinking agent, 0-20% of a coagulant or retarder, 10-30% of polymer fibers, 2-10% of a toughening agent and 10-30% of a dispersing agent. In the leak stopping agent, the coagulant is used for shortening crosslinking time, the retarder is used for prolonging the crosslinking time, and the coagulant or retarder also can not be added into a formula. The leak stopping agent has good leak stopping effect and also has retention and pressure-bearing capabilities; meanwhile, the pressure-bearing capability is strong, and gelling time is basically not influenced by salt invasion, drilling cuttings and the like.

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