Shear strength improving composition, shear strength improving agent and preparation method and application of shear strength improving agent

The technology of a composition and a cutting agent is applied in the preparation of organic compounds, the composition of drilling holes, the preparation of carboxylic acid amides, etc., which can solve the problems of low cutting force performance, and achieve increased hardness and modulus, simple formula, High stability effect

Pending Publication Date: 2021-12-17
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a preparation method and application of a shearing composition, a shearing agent and a shearing agent, so as to solve the problem of low shearing performance of the drilling fluid system in the prior art

Method used

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  • Shear strength improving composition, shear strength improving agent and preparation method and application of shear strength improving agent

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preparation example Construction

[0029] The shear raising agent obtained by the preparation method of the present application has excellent high-temperature stability and high cutting efficiency.

[0030] In yet another typical embodiment of the present application, an application of a cutting agent is provided, which includes using the cutting agent for an oil-based drilling fluid system, preferably the oil-based drilling fluid system is diesel oil, white oil or Any one of the gas-to-oil-based drilling fluid systems, preferably the oil-water ratio of the oil-based drilling fluid system is in the range of 80:20 to 95:5.

[0031]Applying the shear raising agent of the present application to the above-mentioned oil-based drilling fluid system is more conducive to increasing the shear force of diesel oil, white oil or gas-based oil-based drilling fluid system, thereby enhancing its barite suspension and rock-carrying ability, and compensating for organic Insufficient soil viscosification and cutting efficiency, ...

Embodiment 1

[0036] First, add 146 parts of adipic acid and 108 parts of diethylenetriamine into the reaction vessel in sequence, heat up to 165°C under constant stirring, and carry out dehydration condensation reaction for 3 hours to obtain the first post-reaction system. Then add 296 parts of oleic acid to the system after the first reaction, and continue to carry out the dehydration condensation reaction at 165°C for 3h. After the reaction is completed, cool down to 120°C, add 150 parts of 3# white oil and 30 parts of propylene carbonate, and stir evenly. The finished product of the cutting agent is obtained after discharging, which is recorded as the cutting agent A.

Embodiment 2

[0038] Firstly, 120 parts of adipic acid and 80 parts of diethylenetriamine were sequentially added into the reaction vessel, heated to 165°C under constant stirring, and dehydration condensation reaction was carried out for 3 hours to obtain the first post-reaction system. Then add 250 parts of oleic acid to the system after the first reaction, and continue to carry out the dehydration condensation reaction at 165°C for 3h. After the reaction is completed, cool down to 120°C, add 100 parts of 3# white oil and 30 parts of propylene carbonate, and stir evenly. The finished product of the cutting agent is obtained after discharging, which is recorded as the cutting agent B.

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Abstract

The invention provides a shear strength improving composition, a shear strength improving agent and a preparation method and application of the shear strength improving agent. The shear strength improving composition is prepared from the following components in parts by weight: 120-160 parts of adipic acid, 80-120 parts of diethylenetriamine and 250-350 parts of oleic acid. The cross-linking density of the high-molecular condensation polymer formed by the monomers in parts by weight is beneficial to fully inhibiting sliding between molecular chains of the high-molecular condensation polymer and increasing the hardness and modulus of the high-molecular condensation polymer, so that the high-molecular condensation polymer has relatively high stability. In addition, the long straight chain alkyl group in the high-molecular condensation polymer can form a three-dimensional network structure through an association effect. When the high-molecular condensation polymer is used as a shear strength improving agent of an oil-based drilling fluid system, the shear strength of the oil-based drilling fluid system can be improved, so that the barite suspension and rock-carrying capabilities of the oil-based drilling fluid system are enhanced. The shear strength improving composition is simple in formula, wide in monomer raw material source and relatively low in production cost.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a preparation method and application of a cutting composition, a cutting agent and a cutting agent. Background technique [0002] As my country's oil and gas exploration and development goals continue to move towards deep, ultra-deep and complex formations, the technical difficulties and challenges faced in the drilling process of various complex formations such as high-temperature and high-pressure deep wells, high-inclination directional wells, extended-reach horizontal wells, and super water-sensitive formations Accidents are becoming more and more complicated. Oil-based drilling fluids have incomparable advantages over water-based drilling fluids, such as high temperature stability, high permeability recovery value, good lubricity, little damage to reservoirs, good wellbore stability, strong shale inhibition, and a wide range of density adaptation , stable perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035C07C233/38C07C231/14C07C231/02C07C233/36
CPCC09K8/035C07C233/38C07C231/14C07C231/02C07C233/36
Inventor 王茂功孟先虎彭洁郝惠军张蝶
Owner BC P INC CHINA NAT PETROLEUM CORP
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