New method for increasing reservoir reconstruction volume through subdivision cutting and temporary plugging steering combined technology

Abstract

The invention relates to a new method for increasing the reservoir reconstruction volume through a subdivision cutting and temporary plugging steering combined technology, and belongs to the field ofpetroleum and natural gas exploitation. The invention aims to provide the new method for increasing the reservoir reconstruction volume through the subdivision cutting and temporary plugging steeringcombined technology to solve problems, subdivision cutting of a horizontal well is achieved through fast drilling bridge plugs and high-density clustered jet holes, and fracturing fluid and active fluid are injected to open a first-stage artificial fracture in a pressing mode; then sand-carrying fluid containing cleaning steering material fluid is injected to temporarily plug the fracture which ispressed to be open before and a blast hole, the fracture is forced to steer longitudinally, and displacement fluid is used for displacing; and finally a fracture lattice structure is formed. According to the new method, through an adopted subdivision cutting method, high-density artificial fracture well completion is conducted to sufficiently cut a reservoir so as to achieve reservoir working volume maximization, and the production efficiency of all jet hole clusters can be improved by combining with a temporary plugging steering technology; and meanwhile, large-displacement fracturing construction is conducted, the complexity degree of the artificial fractures can be increased, the petroleum leakage area is increased, and the reservoir reconstruction volume is increased.

Description

technical field [0001] The invention relates to a new method for increasing reservoir reconstruction volume by subdivision cutting combined with temporary blocking and steering technology, which belongs to the field of oil and gas exploitation. Background technique [0002] my country has huge low-permeability oil and gas resources. Among the proven reserves, low-permeability reservoirs account for more than 2 / 3 of the national reserves, and the development potential is huge. This kind of oil and gas resources has the characteristics of three lows, that is, low permeability, low abundance, and low single well productivity. [0003] With the rapid development of hydraulic fracturing technology, staged multi-cluster fracturing of horizontal wells has played a huge role in the development of low-permeability oil and gas reservoirs. Fracturing stimulation volume is a crucial parameter affecting the stimulation effect of low-permeability reservoirs. For low-permeability unconve...

AI Technical Summary

Problems solved by technology

Distributed temperature sensors and acoustic sensor monitoring show that about 1 / 3 of the perforation clusters do not form effective fractures, and about 1 / 3 of the perforation clusters with fractures do not contribute to productivity

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