Preparation method of high-temperature-resistant modified sulfonated phenol formaldehyde resin for drilling fluids

A sulfonated phenolic resin, high temperature resistance technology, applied in the field of resin, can solve the problem of not meeting drilling needs and other problems, and achieve the effect of excellent performance

Active Publication Date: 2015-07-22
TIANJIN BO XING ENG SCI & TECH LIMITED COMPANY OF CNPC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sulfonated phenolic resin will also play a more important role as the main anti-high temperature treatment agent, but the current temperature resistance of the product is generally 180°C, and it will gradually fail to meet the drilling needs of high-temperature wells and ultra-high-temperature wells in the future

Method used

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  • Preparation method of high-temperature-resistant modified sulfonated phenol formaldehyde resin for drilling fluids
  • Preparation method of high-temperature-resistant modified sulfonated phenol formaldehyde resin for drilling fluids
  • Preparation method of high-temperature-resistant modified sulfonated phenol formaldehyde resin for drilling fluids

Examples

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Effect test

Embodiment 1

[0036] A method for preparing a high temperature resistant modified sulfonated phenolic resin for drilling fluid provided by an embodiment of the present invention comprises the following steps:

[0037] 1) Add 1 mol of phenol, 0.5 mol of formaldehyde and 0.001 mol of phosphoric acid into the reactor in sequence, mix and stir for 10 minutes, keep the temperature at 70°C, and react for 20 minutes.

[0038] 2) Dissolve 1.0 mol of sodium sulfite in 100 mL of water, and slowly add 0.5 mol of formaldehyde under stirring to prepare a sulfonating agent.

[0039] 3) After the reaction in the above step 1), add 1.0 moles of sodium hydroxide and 0.01 moles of formaldehyde, and keep the temperature at 60° C., add the sulfonating agent in the above step 2) to the reactor in batches, and continue the reaction for 100 minutes.

[0040] 4) After the reaction, cool down and discharge the material, keep the temperature of the material at 55° C., and obtain the product of Example 1 by spray dry...

Embodiment 2

[0042] A method for preparing a high temperature resistant modified sulfonated phenolic resin for drilling fluid provided by an embodiment of the present invention comprises the following steps:

[0043] 1) Add 1.0 moles of p-cresol, 1.0 moles of acetaldehyde and 0.1 moles of hydrochloric acid to the reactor in sequence, mix and stir for 10 minutes, keep the temperature at 80°C, and react for 100 minutes.

[0044] 2) Dissolve 1.0 mole of sodium bisulfite in 100 mL of water, and slowly add 1.0 mole of formaldehyde under stirring to prepare a sulfonating agent.

[0045] 3) After the reaction in the above step 1), add 0.001 mol of potassium hydroxide and 0.6 mol of acetaldehyde, and keep the temperature at 70° C., add the sulfonating agent in the above step 2) to the reactor in batches, and continue the reaction for 20 minutes.

[0046] 4) After the reaction, cool down and discharge the material, keep the temperature of the material at 65° C., and obtain the product of Example 2 ...

Embodiment 3

[0048] A method for preparing a high temperature resistant modified sulfonated phenolic resin for drilling fluid provided by an embodiment of the present invention comprises the following steps:

[0049] 1) Add 1.0 moles of p-ethylphenol, 1.0 moles of formaldehyde and 1.5 moles of acetic acid to the reactor in sequence, mix and stir for 10 minutes, keep the temperature at 80°C, and react for 300 minutes.

[0050]2) Dissolve 1.0 mol of sodium metabisulfite in 100 mL of water, and slowly add 1.0 mol of formaldehyde under stirring to prepare a sulfonating agent.

[0051] 3) After the reaction in the above step 1), add 0.5 moles of barium hydroxide and 0.7 moles of formaldehyde, and keep the temperature at 80° C., add the sulfonating agent in the above step 2) to the reactor in batches, and continue the reaction for 300 minutes.

[0052] 4) After the reaction, cool down and discharge the material, keep the temperature of the material at 75° C., and obtain the product of Example 3 ...

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Abstract

The invention discloses a preparation method of a high-temperature-resistant modified sulfonated phenol formaldehyde resin for drilling fluids, which comprises the following steps: 1) adding a phenol reactant, an aldehyde reactant and an acid catalyst into a reaction kettle, mixing, and reacting at 50-110 DEG C for 10-400 minutes; 2) adding an alkali catalyst and an aldehyde reactant into the reaction kettle, keeping the temperature at 50-110 DEG C, adding a sulfonating agent in batches, and reacting for 10-600 minutes; and 3) after the reaction finishes, cooling, discharging, and carrying out spray drying to obtain the product. The temperature resistance of the modified sulfonated phenol formaldehyde resin product can reach 200 DEG C. The high-temperature high-pressure filter loss of the drilling fluid under the aging condition of 200 DEG C can be effectively lowered as compared with the base mud, and the salt resistance can reach the salt concentration of 15% NaCl.

Description

technical field [0001] The invention relates to the field of resins, in particular to a preparation method of modified sulfonated phenolic resin for drilling fluid. Background technique [0002] Sulfonated phenolic resin (SMP) is a high-temperature and salt-resistant fluid loss reducer developed in the 1970s. It, together with sulfonated lignite (SMC) and sulfonated tannin (SMT), constitute the famous "three Sulfur drilling fluid". The drilling fluid system reduces downhole complex accidents, improves the success rate of deep well drilling, and greatly promotes the technological progress of high-temperature deep well drilling fluids in China. Now sulfonated phenolic resin has become one of the treatment agents that are widely used and must be used in high-temperature well sections. In the future, with the depletion of shallow oil and gas resources, the world's exploration and development will gradually develop into deep strata. Deep well and ultra-deep well oil and gas dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/28C09K8/035
Inventor 张勇王彪刘晓栋刘建军马永乐朱红卫马学勤
Owner TIANJIN BO XING ENG SCI & TECH LIMITED COMPANY OF CNPC
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