Retarding thermosetting resin gelling composition and preparation method thereof

A thermosetting resin and composition technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems that the thickening time is difficult to control stably and cannot be satisfied, and achieve the effect of prolonging the thickening time and improving performance

Inactive Publication Date: 2021-03-09
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a slow-setting thermosetting resin gelling composition and a preparation method thereof, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem that the thickening time of the existing high-temperature phosphate thermosetting resin gelling system is difficult to control stably , the longest setting time cannot meet the requirements of initial setting of 4h to 6h and final setting within 24h

Method used

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  • Retarding thermosetting resin gelling composition and preparation method thereof

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Embodiment 1

[0020] Embodiment 1: The slow-setting thermosetting resin gel composition, the raw materials include 80 to 120 parts of metal oxide, 30 to 60 parts of phosphate, 10 to 50 parts of thermosetting resin, resin 5 to 15 parts of curing agent, 1 to 6 parts of fluid loss reducing agent, 10 to 20 parts of composite regulator, and 30 to 120 parts of water. The composite regulator is made of stearyl acrylate-styrene-maleic anhydride copolymer Compound, sodium alkylbenzene sulfonate and porous glass microspheres are compounded according to the weight ratio of 3:2 to 5:1, and obtained according to the following steps: the first step, weigh the required amount of sodium alkylbenzene sulfonate and Octadecyl acrylate-styrene-maleic anhydride copolymer, after mixing and grinding to a particle size of 100nm to 200nm, the first mixture is obtained; in the second step, the required amount of porous glass beads is added to the first mixture, Control the stirring speed at 100rpm to 200rpm and stir...

Embodiment 2

[0021] Embodiment 2: The slow-setting thermosetting resin gelling composition, the raw materials include 80 or 120 parts of metal oxides, 30 or 60 parts of phosphates, 10 or 50 parts of thermosetting resins, resin 5 or 15 parts of curing agent, 1 or 6 parts of fluid loss reducer, 10 or 20 parts of composite regulator and 30 or 120 parts of water, composite regulator is copolymerized by stearyl acrylate-styrene-maleic anhydride Compound, sodium alkylbenzene sulfonate and porous glass microspheres are compounded according to the weight ratio of 3:2 or 5:1, and obtained according to the following steps: the first step, weigh the required amount of sodium alkylbenzene sulfonate and Octadecyl acrylate-styrene-maleic anhydride copolymer, after mixing and grinding to a particle size of 100nm or 200nm, the first mixture is obtained; in the second step, the required amount of porous glass beads is added to the first mixture, After controlling the stirring speed at 100rpm or 200rpm and ...

Embodiment 3

[0024] Embodiment 3: As an optimization of the above embodiments, the metal oxide is at least one of dead-burned magnesia, aluminum oxide, iron oxide, dicalcium oxide and metakaolin.

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Abstract

The invention relates to the technical field of preparation of thermosetting resin for oil drilling, in particular to a retarding thermosetting resin gelling composition and a preparation method thereof, the retarding thermosetting resin gelling composition comprises metal oxide, phosphate, thermosetting resin, a resin curing agent, a fluid loss agent, a composite regulator and water, the composite regulator is formed by compounding an octadecyl acrylate-styrene-maleic anhydride copolymer, sodium alkyl benzene sulfonate and porous glass beads according to a weight ratio of 3: 2 to 5: 1. The preparation method comprises six steps. The retarding thermosetting resin gelling composition obtained by the invention has the effect of prolonging the thickening time, the initial setting time under the environment of about 80 DEG C is 4-6 hours after mixing, the overall setting can be completed within 24 hours, the density of the composition is 0.8-1.8 g/cm<3>, the compressive strength of a solidified body can reach 22.4 MPa/48 hours, and the elastic modulus can reach 8.27 GPa.

Description

technical field [0001] The invention relates to the technical field of preparation of thermosetting resins for petroleum drilling, and relates to a slow-setting thermosetting resin gelling composition and a preparation method thereof. Background technique [0002] Thermosetting resin refers to a resin that undergoes chemical changes after heating, gradually hardens and forms, and does not soften or dissolve when heated. In the field of oil drilling, the high-strength properties of thermosetting resins are often used to form a section of resin pipe at the enlarged part of the downhole wall to play the role of temporary casing. The thermosetting resin gel system used in this process needs to be mixed on the surface, then pumped to the corresponding position downhole through the drill pipe, and then solidified after being pumped into the corresponding position. However, the existing thermosetting resin has a fast curing speed, and generally thickens and solidifies within 30 mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/44
CPCC09K8/44
Inventor 乔东宇王维周段文广刘顽郑义平屈璠吴金星王伟罡
Owner BC P INC CHINA NAT PETROLEUM CORP
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