公开(公告)号：US20140138085A1

公开(公告)日：2014-05-22

申请号：US14165395

申请日：2014-01-27

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Timothy M. Lesko ,  J. Ernest Brown ,  Dean M. Willberg ,  Ivan Ivan Vitalievich ,  Anatoly Vladimirovich Medvedev

IPC: E21B43/267 ,  C09K8/80

CPC classification number: E21B43/267 ,  C09K8/665 ,  C09K8/68 ,  C09K8/72 ,  C09K8/80

Abstract: A method of heterogeneous proppant placement in a subterranean fracture is disclosed. The method comprises injecting well treatment fluid including proppant (16) and proppant-spacing filler material called a channelant (18) through a wellbore (10) into the fracture (20), heterogeneously placing the proppant in the fracture in a plurality of proppant clusters or islands (22) spaced apart by the channelant (24), and removing the channelant filler material (24) to form open channels (26) around the pillars (28) for fluid flow from the formation (14) through the fracture (20) toward the wellbore (10). The proppant and channelant can be segregated within the well treatment fluid, or segregated during placement in the fracture. The channelant can be dissolvable particles, initially acting as a filler material during placement of the proppant in the fracture, and later dissolving to leave the flow channels between the proppant pillars. The well treatment fluid can include fibers to provide reinforcement and consolidation of the proppant and, additionally or alternatively, to inhibit settling of the proppant in the treatment fluid.

Abstract translation: 公开了一种在地下裂缝中布置非均相支撑剂的方法。 该方法包括将包括支撑剂（16）和称为通道（18）的支撑剂间隔填料的井处理流体通过井筒（10）注入到裂缝（20）中，将支撑剂不均匀地放置在多个支撑剂团簇 或通过所述通道（24）间隔开的岛（22），以及移除所述通道填充材料（24）以形成围绕所述柱（28）的开放通道（26），用于流体从所述地层（14）通过所述断裂 ）朝向井眼（10）。 支撑剂和输送管可以在井内处理液中分离，或在放置在裂缝中时分离。 通道剂可以是可溶解的颗粒，最初在将支撑剂置于断裂中时充当填料，然后溶解以留下支撑剂柱之间的流动通道。 井处理流体可以包括纤维以提供支撑剂的增强和固结，并且还可以或另外地抑制支撑剂在处理流体中的沉降。