Stifled device is separated in acidizing of screen pipe well completion horizontal well of casing deformation

• Main Authors: WANG ZHIBO, WANG LEI, DONG WENMING, ZHANG TENG, PENG SONGLIANG, YANG XIN, LENG BING, LI HONGSHUANG, WU XIAOMING, WANG YINGYING, QU SHAOGANG, SUN ZHENYU, ZHAO JICHENG, ZHANG LIN
• Format: Patent
• Language: English
• Published: 05.08.2015
• 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 provides a stifled device is separated in acidizing of screen pipe well completion horizontal well of casing deformation. This stifled device is separated in acidizing of screen pipe well completion horizontal well of casing deformation includes coiled tubing, mass flow umbrella and impregnation valve, coiled tubing gos deep into the horizontal well when using, the mass flow umbrella encloses to be established on the outer wall of coiled tubing's afterbody, the impregnation valve sets up coiled tubing's tail end. The utility model discloses changing the original acidizing modification method that can only adopt general mode, adopting the segmentation acidizing, can realize the even acidizing operation of horizontal well, what increase the horizontal section acidizing receives the effect degree, improves the reservoir permeability, and well development effect improves the standard.