High-temperature resisting leakproof type unfreezing acid for well drilling and preparation method thereof

A technology for high temperature resistance and acid removal, applied in the field of drilling, can solve the problems of poor leakage resistance and weak high temperature resistance, and achieve the effects of reducing acid fluid loss, shortening time, and eliminating stuck drill accidents.

Inactive Publication Date: 2018-11-27
ZHONGMAN GASOLINEEUM & NATURAL GAS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a kind of anti-high-temperature and anti-leakage anti-jamming acid for drilling and its preparation method, which is used to solve the problem of weak high-temperature resistance and anti-leakage performance of existing anti-jamming agents. bad question

Method used

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  • High-temperature resisting leakproof type unfreezing acid for well drilling and preparation method thereof
  • High-temperature resisting leakproof type unfreezing acid for well drilling and preparation method thereof
  • High-temperature resisting leakproof type unfreezing acid for well drilling and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, a kind of high temperature anti-leakage anti-leakage type carboxylic acid for well drilling, the components of the carboxylic acid and the parts by weight of each component are as follows:

[0023]

[0024] In this embodiment, the hydrochloric acid is industrial hydrochloric acid with a concentration of 31%, the diesel oil is 0# diesel oil, the emulsifier is industrial grade Swan 80, and the corrosion inhibitor is imidazoline type industrial corrosion inhibitor agent, the surfactant is a nonionic surfactant, the nonionic surfactant is polyoxyethylene octylphenol ether or polyoxyethylene nonylphenol ether, and the temporary blocking agent is organic sodium salt temporary Blocking agent.

[0025] In this embodiment, the preparation method of the anti-high temperature and anti-leakage type karyolytic acid for well drilling comprises the following steps: sequentially add 12.5 parts by weight of water, 0.6 parts by weight of corrosion inhibitor, and 13 parts...

Embodiment 2

[0026] Embodiment 2, a kind of anti-high temperature and anti-leakage anti-leakage type carboxylic acid for well drilling, the components of the carboxylic acid and the parts by weight of each component are as follows:

[0027]

[0028] In this embodiment, the hydrochloric acid is industrial hydrochloric acid with a concentration of 31%, the diesel oil is 0# diesel oil, the emulsifier is industrial grade Swan 80, and the corrosion inhibitor is imidazoline type industrial corrosion inhibitor agent, the surfactant is a nonionic surfactant, the nonionic surfactant is polyoxyethylene octylphenol ether or polyoxyethylene nonylphenol ether, and the temporary blocking agent is organic sodium salt temporary Blocking agent.

[0029] In the present embodiment, the preparation method of the anti-high-temperature and anti-leakage type karboxic acid for drilling comprises the following steps: adding 16 parts by weight of water, 0.8 parts by weight of corrosion inhibitor, and 18 parts by...

Embodiment 3

[0030] Embodiment 3, a kind of anti-high temperature and anti-leakage type carboxylate for well drilling, the components of the carboxylate and the parts by weight of each component are as follows:

[0031]

[0032] In this embodiment, the hydrochloric acid is industrial hydrochloric acid with a concentration of 31%, the diesel oil is 0# diesel oil, the emulsifier is industrial grade Swan 80, and the corrosion inhibitor is imidazoline type industrial corrosion inhibitor agent, the surfactant is a nonionic surfactant, the nonionic surfactant is polyoxyethylene octylphenol ether or polyoxyethylene nonylphenol ether, and the temporary blocking agent is organic sodium salt temporary Blocking agent.

[0033] In the present embodiment, the preparation method of the anti-high temperature and anti-leakage type karyolysis acid for well drilling comprises the following steps: adding 20 parts by weight of water, 1.0 parts by weight of corrosion inhibitor, and 22.5 parts by weight of i...

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Abstract

The invention discloses a high-temperature resisting leakproof type unfreezing acid for well drilling and a preparation method thereof and belongs to the technical field of well drilling. The unfreezing acid comprises the following components in parts by weight: 12-50 parts of hydrochloric acid, 30-70 parts of diesel oil, 0.3-0.7 part of ferrous stabilizer, 1.5-4.2 parts of emulsifying agent, 0.3-2.1 parts of corrosion inhibitor, 0.9-2.1 parts of surfactants, 0.9-2.1 parts of temporary plugging agents and 7-35 parts of water. The preparation method for the unfreezing acid comprises the following steps: successively adding 7-35 parts of water, 1.5-4.2 parts of corrosion inhibitor, 12-50 parts of industrial hydrochloric acid, 0.3-0.7 part of ferrous stabilizer, 0.9-2.1 parts of surfactants,1.5-4.2 parts of emulsifying agent, 0.9-2.1 parts of temporary plugging agents and 30-70 parts of diesel oil into an acid mixing tank, and then stirring for 30 minutes in the acid mixing tank, therebyacquiring the unfreezing acid. The unfreezing acid is a stable emulsion which is formed by an oil phase and acid liquor under the effect of emulsifying agent, and has higher viscosity, better retarding property and demulsification property. The unfreezing with the unfreezing acid has the characteristics of short time, quick effect and high success rate.

Description

technical field [0001] The invention belongs to the technical field of drilling, and in particular relates to a high-temperature-resistant and leak-proof karbic acid for drilling and a preparation method thereof. Background technique [0002] During drilling construction, pipe sticking is a common accident, and differential pressure pipe sticking accounts for the largest proportion. Differential pressure sticking usually occurs in the stabilizing section or the falling section, especially in the drilling of deep wells, complex wells, extended-reach wells, branch wells, etc. The occurrence of stuck pipe will seriously delay the operation time and cause serious economic losses. The main reason for pipe sticking accidents is that when a section of drilling tool is in contact with the well wall of a permeable formation, the drilling tool is squeezed and adhered to the well wall under the action of the pressure difference between the well pressure and the formation pressure. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/03C09K8/035C09K8/506
CPCC09K8/032C09K8/035C09K8/506C09K2208/34
Inventor 王鹏
Owner ZHONGMAN GASOLINEEUM & NATURAL GAS GROUP
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