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Modified gum resin with anti-salt filtrate reducer for drilling fluid

A technology of fluid loss control agent and drilling fluid, which is applied in the preparation of salt-resistant fluid loss control agent modified gum resin, and in the field of salt-resistant fluid loss control agent modified gum resin for drilling fluid. Land environmental pollution, complex production process and other issues, to achieve the effect of reducing complex drilling accidents, not polluting the environment, and good compatibility

Active Publication Date: 2020-11-20
石家庄华莱鼎盛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The raw materials used in the above technology are highly alkaline, not easy to degrade, and easy to cause environmental pollution to the land
And the production process is complicated and the cost is high
The above technologies have not given specific guidance on how to use salt-resistant fluid loss additives for drilling fluids to fully resist salt and reduce fluid loss, avoid complex drilling accidents, improve drilling quality and efficiency, and have environmental protection functions.

Method used

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  • Modified gum resin with anti-salt filtrate reducer for drilling fluid
  • Modified gum resin with anti-salt filtrate reducer for drilling fluid
  • Modified gum resin with anti-salt filtrate reducer for drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: The anti-salt fluid loss additive modified gum resin for drilling fluid according to the present invention is made of the following raw materials in parts by mass: 100 parts of clear water, 25 parts of gum resin, performance improver namely polyethylene 15 parts of alcohol, 4.0 parts of chloropropanol, and 1.5 parts of sodium 3-chloro-2-hydroxypropanesulfonate.

[0017] The preparation method of the salt-resistant fluid loss reducer modified gum resin for drilling fluid includes the following process steps: add 100 parts of clean water into the reaction kettle, and start stirring (the stirrer speed is 75-90r / min), press After adding the gum resin and the performance improver in order to dissolve the above mass ratio, add NaOH solution with a mass percentage concentration of 20% to adjust the pH value to 10.5, then add chloropropanol and 3-chloro-2-hydroxypropanesulfonate sodium, Slowly heat to 50°C to react. The reaction time is 10 hours to obtain viscous ...

Embodiment 2

[0018] Embodiment 2: The anti-salt fluid loss additive modified gum resin for drilling fluid according to the present invention is made of the following raw materials in parts by mass: 110 parts of clear water, 30 parts of gum resin, performance improver namely polyethylene 10 parts of alcohol, 4.5 parts of chloropropanol, and 2.0 parts of sodium 3-chloro-2-hydroxypropanesulfonate.

[0019] The preparation method of the salt-resistant fluid loss reducer modified gum resin for drilling fluid includes the following process steps: add 110 parts of clean water into the reaction kettle, and start stirring (the stirrer speed is 70-85r / min), press After adding the gum resin and the performance improver in order to dissolve the above mass ratio, add NaOH solution with a mass percentage concentration of 20% to adjust the pH value to 11.5, then add chloropropanol and 3-chloro-2-hydroxypropanesulfonate sodium, Slowly heat up to 55°C to react. The reaction time is 9 hours, and viscous liq...

Embodiment 3

[0020] Embodiment 3: The salt-resistant fluid loss reducer modified gum resin for drilling fluid according to the present invention is made of the following raw materials in parts by mass: 120 parts of clear water, 30 parts of gum resin (gum arabic gum), performance The improver is 20 parts of polyvinyl alcohol, 5.5 parts of chloropropanol, and 1.5 parts of sodium 3-chloro-2-hydroxypropanesulfonate.

[0021] The preparation method of the salt-resistant fluid loss reducer modified gum resin for drilling fluid includes the following process steps: add 120 parts of clean water into the reaction kettle, and start stirring (the stirrer speed is 65-80r / min), press After adding gum resin and performance improver in order to dissolve the above mass ratio, add NaOH solution with a concentration of 20% by mass to adjust the pH value to 11, then add chloropropanol and 3-chloro-2-hydroxypropanesulfonate sodium, Slowly heat to 60°C to react. The reaction time is 8 hours to obtain a viscous...

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Abstract

A salt-resistant filtrate reducer modified gum resin for a drilling fluid is prepared from, by mass, 100-120 parts of clear water, 20-30 parts of gum resin, 10-20 parts of a performance improver, 4.0-6.0 parts of chloropropanol and 1.0-2.0 parts of sodium 3-chloro-2-hydroxypropanesulfonate; and the performance improver is polyvinyl alcohol. The screen residue of the product is less than or equal to 10.0%, the water content is less than or equal to 12.0%, the pH value is 9-10, the room-temperature filter pressing loss of 4-8% saline water at room temperature is less than or equal to 10.0 mL, and the room-temperature filter pressing loss of 4-8% saline water after aging at 150 DEG C is less than or equal to 12.0 mL. The product has good performances and good salt resistance and filtrate lossreduction performance, still has good temperature and salt resistance after being aged at a high temperature of 150 DEG C, effectively avoids or reduces drilling complex accidents, and improves the drilling quality and efficiency.

Description

technical field [0001] The invention relates to a petroleum drilling fluid additive, in particular to a salt-resistant fluid loss reducer modified gum resin for drilling fluid. The invention also relates to a preparation method of the salt-resistant fluid loss reducer-modified gum resin for the drilling fluid. Background technique [0002] Drilling fluid is an important fluid in drilling engineering, and its performance is directly related to the quality of drilling, and plays a crucial role in the oil recovery efficiency of an oil field. At present, there are many kinds of anti-salt fluid loss additives on the market, but they often cannot have both high efficiency and environmental protection. At present, the commonly used salt-resistant fluid loss reducers that can meet the requirements of environmental protection have certain deficiencies in their performance. It is difficult to effectively resist salt and reduce fluid loss, and it is difficult to ensure the high-effici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/035C08G81/02
CPCC08G81/02C09K8/035
Inventor 陈利赵秀平
Owner 石家庄华莱鼎盛科技有限公司