Fine fracture control temporary plugging diversion fracturing method

Abstract

The invention discloses a fine fracture control temporary plugging diversion fracturing method. The method comprises the steps that when temporary plugging steering fracturing is conducted on a target well, micro-seismic monitoring is adopted in the fracturing process of all stages of fracturing sections of the target well to conduct fracture extension dynamic real-time monitoring; when it is monitored that fracture extension which is not beneficial to fracturing occurs on a fracturing section in the fracturing process of a certain stage of the fracturing section, a temporary plugging adjustment scheme is determined in real time, and follow-up fracturing is completed after temporary plugging adjustment is conducted on the fracturing section according to the temporary plugging adjustment scheme; wherein the temporary plugging adjustment scheme comprises the number of times of delivery of a temporary plugging agent, and the number of times of delivery of the temporary plugging agent is determined on the basis of monitored crack extension characteristics of crack extension which is not beneficial to fracturing.

Description

technical field [0001] The invention belongs to the technical field of fracturing and production stimulation, and in particular relates to a fine seam-controlled temporary plugging and diverting fracturing method. Background technique [0002] In recent years, the scale of fracturing has developed towards large sand volume, large liquid volume, and large displacement (industrialization). Repeated fracturing of old wells in old oilfields and old areas, stimulation of new layers, development and utilization of tight oil and gas and shale oil and gas resources and Economic construction and production, etc., have become the foundation and key to supporting the security of oil and gas strategies. The concept of volume fracturing and fracture network fracturing guides the development direction of fracturing technology. [0003] However, volume fracturing and fracture network fracturing often have the problem that the expansion of fractured fractures cannot meet the expectations o...

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Problems solved by technology

[0003] However, volume fracturing and fracture network fracturing often have the problem that the expansion of fractured fractures cannot meet the expectations of the fracturing process design, mainly manifested in the uneven expansion of fractured fractures, poor fracture complexity, and large differences in stimulation between layers / clusters A series of problems, such as volume fracturing and fracture network fracturing, did not meet expectations, which greatly affected the effect of fracturing reconstruction and production establishment.

[0004] At present, a large number of temporary plugging and fracturing measures have been carried out at home and abroad for old wells and old formations, tight oil and gas, and shale oil and gas. There are many problems in the temporary plugging technology that has been implemented so far. Among them, the quantitative calculation of the design is not targeted enough, and the diagnosis and adjustment of the construction process is poor. Insufficient post-press analysis and evaluation are common problems

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