Resin cementing material for oil-gas well as well as preparation method and application thereof
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A technology of resin glue and oil and gas wells, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of corrosion resistance, inability to change completely, and high brittleness
Pending Publication Date: 2020-10-20
BC P INC CHINA NAT PETROLEUM CORP +2
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However, only by adding admixtures to ordinary Portland cement, it is impossible to completely change its inherent defects, such as high brittleness, corrosion resistance, etc.
Method used
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[0058] On the other hand, if figure 1 As shown, the embodiment of the present invention also provides a method for preparing a resin gelling material for oil and gas wells, the method comprising:
[0059] S1, prepare bisphenol F epoxy resin and curing agent by weight ratio of 9-11: 4-10, prepare diluent by weight ≤ 10-20% of the weight of the bisphenol F epoxy resin, by weight ≤ the described 9% of bisphenol F epoxy resin weight prepares coagulant;
[0060] S2, uniformly mixing the bisphenol F epoxy resin and the diluent to obtain a first mixture;
[0061] S3, uniformly mixing the first mixture, the curing agent and the coagulation regulator to obtain a resin cementitious material for oil and gas wells.
[0062] After mixing the bisphenol F epoxy resin and the diluent, the reason for adding the curing agent and the coagulation agent is that the simple mixing of the resin and the diluent will not cause a curing reaction, and the mixture obtained after mixing the two can be us...
Embodiment 1
[0070] At room temperature, add 100 parts of bisphenol F epoxy resin NPEF-170 into a beaker, add 20 parts of diluent dodecyl glycidyl ether, stir evenly, and let stand for 5 minutes. Add 40 parts of curing agent 3,3'-diethyl-4,4'-diaminodiphenylmethane into the beaker and stir evenly.
Embodiment 2
[0072] The difference between this example and Example 1 is that: after adding the curing agent and stirring evenly, add 0.5 parts of coagulation regulator N, N-dimethylaniline. The performance test method is the same as in Example 1.
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Abstract
The invention particularly relates to a resin cementing material for an oil-gas well and a preparation method and application thereof, and belongs to the technical field of oil-gas well engineering. The resin cementing material is prepared from bisphenol F epoxy resin and a curing agent, wherein the bisphenol F epoxy resin is prepared from at least one of the following components: epoxy resin NPEF-170, epoxy resin NPEF-175, epoxy resin NPEF-185 and epoxy resin NPEF-198; and the curing agent comprises at least one of an amine curing agent and an anhydride curing agent. An amino group or a carboxyl group in the amine curing agent or the anhydride curing agent opens a ring of an epoxy group in the epoxy resin in a high temperature environment in an oil-gas well; a curing agent molecule is taken as a center to form a four-arm star-shaped structure, in the microscopic level, linear epoxy resin molecules are crosslinked to form a three-dimensional network structure, in the macroscopic level,a liquid resin cementing material is solidified into a solid state with certain mechanical strength after a period of time in an underground high-temperature environment, and the cementing and packing effects are achieved.
Description
technical field [0001] The invention belongs to the technical field of oil and gas well engineering, and in particular relates to a resin gelling material for oil and gas wells, a preparation method and application thereof. Background technique [0002] Cementitious material, also known as cementitious material. Under physical and chemical action, it can change from slurry to solid stone-like body, and can cement other materials to form a composite solid material with certain mechanical strength. Among them, asphalt, natural or synthetic resin, etc. belong to organic gelling materials. [0003] With the exploration and development of oil and gas resources expanding from shallow to deep layers, the difficulty of mining is increasing, the downhole environment is becoming more and more complex, and the proportion of unconventional oil and gas resources is increasing. The traditional ordinary Portland cement is difficult to fully meet the needs of various complex well conditio...
Claims
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Application Information
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