Sleeve pipe is bridging plug for fracturing

• Main Authors: ZHANG LIJUAN, ZHANG ANKANG, WANG XIAOMING, HU XIANGJUN, GUI JIE, LI XUMEI, SHAO YUAN
• Format: Patent
• Language: English
• Published: 18.11.2015
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model relates to a sleeve pipe is bridging plug for fracturing, the top connection and the lower clutch at both ends about the centibar is with it, the middle part cover of centibar have long packing element and a short packing element, outside the upper portion of centibar and the lower part respectively the cover have to go up and support cover and under bracing cover, go up that the support is overlapped and the under bracing is put in and is fixed with the packing element seat respectively, lies in on the long packing element the short packing element of lower extreme and all install at the packing element seat, going up and being provided with the seating ring between support cover and the top connection, the lower extreme supports joint and last support cover respectively on the seating ring, be provided with the slips between under bracing cover and the lower clutch, be provided with the fluke on the slips. This kind of design has slips and locking mechanism's sleeve pipe is bridging plug for fracturing, can guarantee the reliability of bridging plug, adopts the degradation material, when reaching certain pit shaft condition, and can be along with the time degradation. This kind of sleeve pipe is bridging plug for fracturing has the bearing capacity height, exempts from to bore the characteristics of stopper, big latus rectum, can be used to highly deviated well and the transformation of horizontal well reservoir multistage, the quick operation.