公开(公告)号：US07565929B2

公开(公告)日：2009-07-28

申请号：US11872973

申请日：2007-10-16

申请人： Oscar Bustos ,  Christopher N. Fredd ,  Yiyan Chen ,  Carlos Abad ,  Goke Adeogun

发明人： Oscar Bustos ,  Christopher N. Fredd ,  Yiyan Chen ,  Carlos Abad ,  Goke Adeogun

IPC分类号： E21B43/267 ,  E21B33/138

CPC分类号： E21B43/267 ,  C09K8/68 ,  C09K8/74 ,  C09K8/80 ,  C09K8/88 ,  C09K2208/30

摘要： Degradable material assisted diversion (DMAD) methods for well treatment, DMAD treatment fluids, and removable plugs for DMAD in downhole operations. A slurry of solid degradable material is injected into the well, a plug of the degradable material is formed, a downhole operation is performed around the plug diverter, and the plug is then degraded for removal. Degradation triggers can be temperature or chemical reactants, with optional accelerators or retarders to provide the desired timing for plug removal. In multilayer formation DMAD fracturing, the plug isolates a completed fracture while additional layers are sequentially fractured and plugged, and then the plugs are removed for flowback from the fractured layers. In DMAD fluids, an aqueous slurry can have a solids phase including a degradable material and a fluid phase including a viscoelastic surfactant. The solids phase can be a mixture of fibers and a particulate material.

摘要翻译： 用于井下处理的可降解材料辅助转移（DMAD）方法，DMAD处理流体和用于DMAD的可拆卸插头。 将固体可降解材料的浆料注入井中，形成可降解材料的塞子，在塞子转向器周围进行井下操作，然后将塞子降解以除去。 降解触发器可以是温度或化学反应物，可选择的加速器或缓凝剂可提供插头去除所需的时间。 在多层形成DMAD压裂中，塞子将完成的裂缝隔离，而另外的层被依次断裂和堵塞，然后将塞子从裂缝层中回流回去。 在DMAD流体中，含水浆料可以具有包含可降解材料的固体相和包含粘弹性表面活性剂的流体相。 固相可以是纤维和颗粒材料的混合物。

公开(公告)号：US20080093073A1

公开(公告)日：2008-04-24

申请号：US11872973

申请日：2007-10-16

申请人： Oscar Bustos ,  Christopher Fredd ,  Yiyan Chen ,  Carlos Abad ,  Goke Adeogun

发明人： Oscar Bustos ,  Christopher Fredd ,  Yiyan Chen ,  Carlos Abad ,  Goke Adeogun

IPC分类号： C09K8/00 ,  C09K8/60

CPC分类号： E21B43/267 ,  C09K8/68 ,  C09K8/74 ,  C09K8/80 ,  C09K8/88 ,  C09K2208/30

摘要： Degradable material assisted diversion (DMAD) methods for well treatment, DMAD treatment fluids, and removable plugs for DMAD in downhole operations. A slurry of solid degradable material is injected into the well, a plug of the degradable material is formed, a downhole operation is performed around the plug diverter, and the plug is then degraded for removal. Degradation triggers can be temperature or chemical reactants, with optional accelerators or retarders to provide the desired timing for plug removal. In multilayer formation DMAD fracturing, the plug isolates a completed fracture while additional layers are sequentially fractured and plugged, and then the plugs are removed for flowback from the fractured layers. In DMAD fluids, an aqueous slurry can have a solids phase including a degradable material and a fluid phase including a viscoelastic surfactant. The solids phase can be a mixture of fibers and a particulate material.

摘要翻译： 用于井下处理的可降解材料辅助转移（DMAD）方法，DMAD处理流体和用于DMAD的可拆卸插头。 将固体可降解材料的浆料注入井中，形成可降解材料的塞子，在塞子转向器周围进行井下操作，然后将塞子降解以除去。 降解触发器可以是温度或化学反应物，可选择的加速器或缓凝剂可提供插头去除所需的时间。 在多层形成DMAD压裂中，塞子将完成的裂缝隔离，而另外的层被依次断裂和堵塞，然后将塞子从裂缝层中回流回去。 在DMAD流体中，含水浆料可以具有包含可降解材料的固体相和包含粘弹性表面活性剂的流体相。 固相可以是纤维和颗粒材料的混合物。