FRACTURING METHOD TO REDUCE TORTUOSITY,申请号CA20112802674-传众专利搜索

FRACTURING METHOD TO REDUCE TORTUOSITY

申请公布号：CA2802674(A1)

申请号：CA20112802674

申请日期：2011.05.23

申请公布日期：2011.12.22

申请人：

BAKER HUGHES INCORPORATED

发明人：O'CONNELL, MARIA M.;JOHNSON, MICHAEL H.;CASTILLIO, DAVID A.

分类号：E21B43/114;E21B10/60;E21B43/26

主分类号：E21B43/114

摘要：A series of jet nozzles have a telescoping structure designed to impact the borehole wall and initiate a fracture. The nozzles can be extended through fluid pumped through them or with some mechanical force from within the bottom hole assembly. The leading ends of the telescoping assembly can be sharp and hardened to facilitate the initiation of a formation fracture in an open hole. The telescoping structures can be disposed in a single or multiple rows with the circumferential spacing being such that each telescoping structure is designed to cover a target circumferential distance of 45 degrees or less so that jetted fluid from at least one jet will be within 22.5 degrees of a location of maximum formation stresses to reduce the tortuosity of the created fractures from jetting through the nozzles with possible enhancement of the fracturing from added annulus pressure.