Anti-sand construction process using water to dilute carrying phenolic resin

Abstract

The invention relates to an anti-sand construction process using water to dilute carrying phenolic resin. The anti-sand construction process comprises the following steps: mixing a phenolic resin anti-sand agent with a suspending agent so as to obtain a premix, and then mixing the premix with water so as to obtain a phenolic resin suspension, wherein the suspending agent is light calcium carbonate, glycerin, diesel oil and / or kerosene; and injecting the phenolic resin suspension into a formation, and performing anti-sand construction operation. The anti-sand construction process is a simple and safe phenolic resin anti-sand construction process, by adopting the construction process, the radius of curing treatment on the formation of the phenolic resin anti-sand agent is increased, the anti-sand cost is reduced, and the risk of high possibility of formation blockage caused by directly utilizing phenolic resin to perform anti-sand construction be eliminated.

Description

technical field [0001] The invention relates to a sand control construction technology used in petroleum exploitation, in particular to a sand control construction technology for diluting phenolic resin with water. Background technique [0002] Sand control construction can alleviate the pressure on oilfield production caused by sand production in unconsolidated sandstone reservoirs. Sand control technology adopted at home and abroad can be divided into mechanical sand control and chemical sand control. Although mechanical sand control has a long effective period, it has not fundamentally solved the problem of sand production in the formation. Mechanical sand control is relatively weak in the control of fine silt sand, and mechanical sand control cannot be used in casing variable wells. The promising application fields of chemical sand control include: fine silt control, casing well sand control, combined with mechanical sand control or alone. Preliminary sand control for ...

AI Technical Summary

Problems solved by technology

However, the price of the organic solvents used in these methods is relatively high, resulting in a substantial increase in the cost of sand control. Moreover, the damage to the permeability of the formation is relatively large, especially the risk of clogging the formation.

[0005] (2) Inject polymerizable monomers into the formation, and use underground synthetic resins for sand control construction: Zhang Guorong and Yan Jingen et al. in "Underground Synthesis of FSJ-III Phenolic Resin Adhesives" ("China Adhesives", 2001, Vol.10, No.3, 24-26 pages) introduces the underground synthesis of phenolic resin and its sand control effect, but the cost of sand control input is relatively high

However, the adoption of this sand control process requires a special operation vehicle, and the construction cost is relatively high, resulting in a substantial increase in cost

[0007] The construction techniques of the above three phenolic resin sand control agents all have shortcomings in varying degrees, which limit their popularization and application.