公开(公告)号：US5981446A

公开(公告)日：1999-11-09

申请号：US891320

申请日：1997-07-09

申请人： Xiaoping Qiu ,  Erik B. Nelson ,  Philip F. Sullivan ,  Vernon Constien

发明人： Xiaoping Qiu ,  Erik B. Nelson ,  Philip F. Sullivan ,  Vernon Constien

IPC分类号： C09K8/64 ,  C09K8/68 ,  C09K8/70 ,  C09K3/00 ,  E21B43/17

CPC分类号： B01F3/1228 ,  B01F13/0035 ,  B01F3/0861 ,  B01F5/0256 ,  C09K8/64 ,  C09K8/685 ,  C09K8/703 ,  B01F5/0413 ,  Y10S507/922

摘要： Methods and apparatus are disclosed for fracturing subterranean formations using fracturing fluids that are hydrated from dry mix blends. One aspect of the invention comprises a dry blended particulate composition for hydraulic fracturing comprising a particulate hydratable polysaccharide, a particulate crosslinking agent, and a slowly releasing particulate base. The compositions employ controlled release methods of particle dissolution. The invention reveals a dry blended particulate composition capable of significantly improved high temperature stability. Further, methods of fracturing and apparatus for rapidly hydrating and pumping the fracturing fluid into subterranean formations are disclosed.

摘要翻译： 公开了使用从干混混合物中水合的压裂液来压裂地下地层的方法和装置。 本发明的一个方面包括用于水力压裂的干混颗粒组合物，其包含颗粒状可水合多糖，颗粒交联剂和缓慢释放的颗粒基料。 该组合物采用控制释放的颗粒溶解方法。 本发明揭示了能够显着提高高温稳定性的干混颗粒组合物。 此外，公开了压裂方法和用于将压裂液快速水合和泵送到地层中的装置。

公开(公告)号：US20050065037A1

公开(公告)日：2005-03-24

申请号：US10979308

申请日：2004-11-02

申请人： Vernon Constien

发明人： Vernon Constien

IPC分类号： C09K8/52 ,  C09K8/536 ,  E21B43/08 ,  E21B43/00

CPC分类号： E21B43/08 ,  C09K8/52 ,  C09K8/536 ,  Y10S507/902

摘要： Coatings for well screens that protect the screens from damage as they are inserted into the wellbore and once in the well, release reactive materials to react with and degrade potentially plugging materials such as drill solids, fluid filtercakes, fluid loss additives, and drilling fluids. The coatings can be specifically designed for individual well conditions and are comprised of a binder that either melts or dissolves within the wellbore and one or more reactive materials such as acids, enzymes, surfactants, chelants, oxidizers or free radical generators and the like which are released into the screen and the near wellbore area and which are effective in degrading or dissolving materials which could potentially plug the screen.

摘要翻译： 用于井眼筛网的涂层，当屏幕被插入井筒中时，防止屏幕受到损坏，并且一旦在井中，释放反应性材料与潜在的堵塞材料如钻石固体，流体滤饼，流体损失添加剂和钻井液反应并降解。 涂层可以专门设计用于个别井条件，并且包括在井眼内熔化或溶解的粘合剂和一种或多种反应性材料，例如酸，酶，表面活性剂，螯合剂，氧化剂或自由基发生剂等，它们是 释放到屏幕和近井眼区域，并且有效地降解或溶解可能堵塞屏幕的材料。