Fracturing method adopting ultralow-density proppant and fracturing system applicable to fracturing method

• Main Authors: HOU JINYE, ZHOU CHANGJING, GU YONGHONG, ZHOU SHAOWEI, LYU WEI, LAI XUANANG, HAN QIAORONG, LI XIANWEN, ZHANG YANMING, MA XINXING, ZHAO QIANYUN, SHI HUA, LIU XIAORUI, MA XU, DING YONG
• Format: Patent
• Language: Chinese; English
• Published: 20.07.2016
• 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 invention belongs to the technical field of oil production engineering and particularly relates to a fracturing method adopting an ultralow-density proppant and a fracturing system applicable to the fracturing method. The ultralow-density proppant is mainly adopted for fracturing, a highly concentrated ultralow-density sand blended liquid is designed, a centrifugal pump is adopted for pumping, and a magnetic flow meter is adopted for metering the concentration of the sand blending liquid precisely; a flowback liquid is treated and recycled after fracturing, and the problems of transportation, uniform mixing with a fracturing fluid and metering of the ultralow-density proppant are solved; the laying distance of the proppant in a crack is increased, a crack supporting area is increased, the non-continuous single-layer laying of the ultralow-density proppant in the crack is realized, the diversion capacity is improved, the production decline rate of an oil and gas well is retarded, the dosage of the proppant