Design method of sand blasting perforation annular layered fracturing of coiled tube

• Main Authors: BAI JIANWEN, CUI YUNQUN, HU ZIJIAN, WU MINGSONG, LU ZHEN, ZHANG JIAZHI, MOU CHUNGUO, WANG JIAXIN, ZHU GENGGENG, TENG FEIQI, LI DA, KUANG DAN, DAI DONGMEI, MA DEHUA, CHEN XIAOLI, JIA JIANPENG, FU PENG
• Format: Patent
• Language: Chinese; English
• Published: 19.03.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ELECTRIC DIGITAL DATA PROCESSING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PHYSICS

The invention discloses a design method of sand blasting perforation annular layered fracturing of a coiled tube. The method comprises the following steps of 1, determining the shape of a crack aftera reservoir is fully reconstructed; 2, determining the construction displacement of a reconstructed stratum section of a designed well; 3, calculating the supporting dosage, the amount of sand loadingliquid and the average sand ratio of the sand loading liquid in the reconstructed stratum section; 4, calculating the amount of padding liquid and the proportion of the padding liquid; 5, determininga sand addition gradient and a construction pumping sequence for fracturing construction. According to the method, by previously determining shape parameters, such as crack length, crack height and crack width, of the crack to be reconstructed, carrying out back calculation on fracturing design parameters including the construction displacement, sand addition amount, the average construction sandratio and the proportion of