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Multifunctional drilling fluid additive and preparation method thereof

A drilling fluid treatment agent and active agent technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of increased difficulty in maintenance and treatment, increased labor intensity of workers, and complex components of drilling fluid, so as to facilitate discharging and Product packaging, low cost, and the effect of eliminating air bubbles

Inactive Publication Date: 2013-02-13
CHINA UNIV OF PETROLEUM (EAST CHINA) +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Adding multiple treatment agents to the drilling fluid at the same time not only increases the cost of the drilling fluid, but also increases the labor intensity of the workers. At the same time, the composition of the drilling fluid is complicated and the maintenance and treatment are more difficult.

Method used

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  • Multifunctional drilling fluid additive and preparation method thereof
  • Multifunctional drilling fluid additive and preparation method thereof
  • Multifunctional drilling fluid additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Add 759 parts of water to the reactor, raise the temperature to 40°C, add 60 parts of cationic fluorocarbon surfactant JSC2170T, and stir for 30 minutes; add 30 parts of triethanolamine, and stir for 10 minutes; slowly add 150 parts of Span-20, and finish adding Continue to stir for 60 minutes; cool down to 30°C, add 1 part of tributyl phosphate, stir for 10 minutes and discharge.

[0055] The performance of the various functional drilling fluid treatment agents prepared by the above method was investigated, and the results are shown in Table 1.

[0056] Table 1

[0057] project

Embodiment 2

[0059] Add 679 parts of water to the reactor, raise the temperature to 50°C, add 80 parts of cationic fluorocarbon surfactant JSC2180T, and stir for 30 minutes; add 40 parts of triethanolamine, and stir for 10 minutes; slowly add 200 parts of Span-60, and finish adding Continue to stir for 90 minutes; cool down to 30°C, add 1 part of n-octanol, stir for 20 minutes and discharge.

[0060] The performance of the anti-high temperature viscosity-increasing fluid loss reducer prepared by the above method was investigated, and the results are shown in Table 2.

[0061] Table 2

[0062] project

Embodiment 3

[0064] Add 633 parts of water to the reactor, raise the temperature to 45°C, add 70 parts of cationic fluorocarbon surfactant AF4018-SJ, and stir for 30 minutes; add 45 parts of triethanolamine, and stir for 10 minutes; slowly add 250 parts of Span-80, Continue to stir for 80 minutes after the addition; cool down to 30°C, add 2 parts of polydimethylsiloxane, stir for 15 minutes and discharge.

[0065] The performance of the anti-high temperature viscosity increasing fluid loss reducer prepared by the above method was investigated, and the results are shown in Table 3.

[0066] table 3

[0067] project

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Abstract

The invention provides a multifunctional drilling fluid additive and a preparation method of the multifunctional drilling fluid additive. The preparation method comprises a first step of heating water up to 35-70 DEG C; cation fluorocarbon surfactant, alcamines chemical compound and nonionic surfactant are respectively added under the condition of stirring. When the cation fluorocarbon surfactant, the alcamines chemical compound and the nonionic surfactant are all added, the mixture of the water, the cation fluorocarbon surfactant, the alcamines chemical compound and the nonionic surfactant are stirred for 0.5-2h. A second step of cooling down the temperature to 30-34 DEG C; antifoaming agents are added, and the water, the cation fluorocarbon surfactant, the alcamines chemical compound, the nonionic surfactant and the antifoaming agents are stirred and emptied to obtain the multifunctional drilling fluid additive. The multifunctional drilling fluid additive and the preparation method of the multifunctional drilling fluid additive are simple in craft and low in cost. The product obtained has the advantages of being lubricated, anti-sloughed and de-filtrated, and reducing surface tension and the like. The ability of resistance to temperature reaches 180 DEG C, and the multifunctional drilling fluid additive and the preparation method of the multifunctional drilling fluid additive can be applied for a deep well and an extradeep well, have good compatibility performance of the drilling fluid, and have no blighting effects on the drilling fluid.

Description

technical field [0001] The invention relates to a multifunctional drilling fluid treatment agent and a preparation method thereof, belonging to the technical field of drilling fluid treatment agents in the oil drilling process. technical background [0002] In the process of oil drilling, in order to ensure the smooth progress of drilling and protect the oil and gas layers, the drilling fluid needs to have multiple functions: in order to maintain the stability of the well wall, the drilling fluid should have good anti-collapse performance; The friction and torque in the process, the drilling fluid should have good lubricating properties; in order to reduce the water lock damage after the drilling fluid invades the low permeability oil and gas layer, the drilling fluid should have good fluid loss control and low surface tension, etc. Wait. [0003] The adjustment and maintenance of drilling fluid performance are realized by adding suitable treatment agents for drilling fluid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035
Inventor 吕开河任冠龙刘天科
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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