Pulse horizontal well volume fracturing device and horizontal well volume fracturing method

Abstract

The invention relates to the technical field of oil and gas field exploitation, and relates to a volumetric fracturing device for pulsed horizontal wells and a volumetric fracturing method for horizontal wells. The former includes a coiled tubing, and a connector, a motor head assembly, and a centralizer are sequentially connected to the horizontal section of the coiled tubing. A device, a pulse tool capable of generating high-pressure fluid, an injector, a locator and a guide shoe; the latter includes the following steps: (1) Drill down and determine the perforation position. The invention has a reasonable and compact structure and is easy to use. With such a setting, it can be quickly disassembled and assembled, and the construction cost can be reduced. The pulse fluid can be generated through the pulse tool, and the pulse fluid can improve the perforation efficiency and enhance the volumetric fracturing process through the nozzle. The generation of micro-fractures in the perforation hole can also realize the increase of energy in the perforation hole, rapid formation cracking, lower construction pressure, and solve the problem of traditional volume fracturing stimulation methods for the stimulation of the target layer when the formation fracture pressure is high. limited problem.

Description

technical field [0001] The invention relates to the technical field of oil and gas field exploitation, and relates to a pulse horizontal well volume fracturing device and a horizontal well volume fracturing method. Background technique [0002] With the popularization and application of coiled tubing downhole operation technology, more and more coiled tubing is used in oil and gas field downhole operation. To meet the needs of on-site refined operations, one of the important reasons is the low utilization rate of the fluid pressure energy pumped into the surface. Increasing the bottom hole hydraulic energy or improving its utilization rate is of great significance to improving the operation efficiency and effect. At present, the main way to generate bottom-hole fluid pulse pressure is to use a special structure to realize the fluid resistance change or periodic vibration at the bottom of the hole, but it cannot fully solve the problem of unreasonable bottom-hole hydraulic en...

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Problems solved by technology

[0003] The present invention provides a volumetric fracturing device for pulsed horizontal wells and a volumetric fracturing method for horizontal wells, which overcomes the deficiencies of the prior art and can effectively solve the problem of unreasonable bottom-hole hydraulic energy matching, inaccurate injector positioning, and traditional volumetric fracturing. The relatively limited problem of fracturing reform method

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