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Biomass synthetic resin filtrate reducer for drilling fluid as well as preparation method and application thereof

A technology of synthetic resin and fluid loss reducer, applied in the field of petroleum industry, can solve the problems of large price fluctuation, poor biodegradability, difficult treatment and disposal, etc. green effect

Pending Publication Date: 2021-11-09
中石化石油工程技术服务有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the severe environmental protection situation, this type of product has the following problems: (1) The production raw materials are mainly fossil resources, which have poor degradability and large price fluctuations. The raw materials for SMP production are mainly formaldehyde and phenol, and the structure contains benzene rings. The product itself is non-toxic, but there is a lack of special degrading bacteria in nature, and the biodegradability is poor. In some areas with relatively high environmental protection requirements, the application of SMP has been limited; (2) Residual phenol has certain toxicity. Phenol has certain toxicity, although many means and measures have been taken, it is still difficult to completely remove it, and its release into the air will affect the atmospheric environment and human health; (3) the used sulfonated drilling cuttings and waste water have high COD, Large chroma, low biodegradability, difficult handling and disposal, and high processing costs

Method used

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  • Biomass synthetic resin filtrate reducer for drilling fluid as well as preparation method and application thereof
  • Biomass synthetic resin filtrate reducer for drilling fluid as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In parts by weight, extract lignin from 25 parts of corncobs, 50 parts of phenol, 3 parts of hydrochloric acid and 20 parts of 1,3-diisoamylimidazole hexafluorophosphate ([D(i-C 5 )Im][PF 6 ]) The temperature-controlled ionic liquid is added to a three-necked flask with a stirrer, a condensing device and a thermometer in sequence, and the rotation speed is controlled at 180r / min. The oil bath is heated to 105°C for liquefaction for 1 hour. After the reaction is completed, cool to room temperature, and the ionic liquid is solid The ionic liquid after precipitation and separation can be reused, and the liquid phase is liquefied lignin.

[0045] In parts by weight, 100 parts of liquefied lignin obtained, 30 parts of anhydrous sodium sulfite, 35 parts of paraformaldehyde, and 350 parts of water were mixed, reacted at 60°C for 0.5h, continued to heat up to 90°C for 2h, and cooled naturally to room temperature to obtain a biomass synthetic resin fluid loss reducer for drilli...

Embodiment 2

[0048] In parts by weight, 50 parts of enzymatic lignin, 50 parts of phenol, 15 parts of hydrochloric acid and 20 parts of 1,3-bis(2-methylbutyl) imidazole hexafluorophosphate ([D(2 -mb)Im][PF 6 ]) The temperature-controlled ionic liquid is added to a three-necked flask with a stirrer, a condensing device and a thermometer in sequence, and the rotation speed is controlled at 350r / min. The oil bath is heated to 125°C for liquefaction for 3 hours. After the reaction is completed, cool to room temperature, and the ionic liquid is in a solid state. The ionic liquid after precipitation and separation can be reused, and the liquid phase is liquefied lignin.

[0049] In parts by weight, mix 100 parts of the obtained liquefied lignin, 40 parts of sodium metabisulfite, 50 parts of paraformaldehyde, and 600 parts of water, react at 70°C for 1.5h, continue to heat up to 100°C for 4h, and then cool naturally to room temperature , to obtain a biomass synthetic resin fluid loss reducer for...

Embodiment 3

[0052] In parts by weight, 40 parts of lignin derivatives, 50 parts of phenol, 10 parts of hydrochloric acid and 20 parts of 1,3-diisoamylimidazole hexafluorophosphate ([D(i-C 5 )Im][PF 6 ]) The temperature-controlled ionic liquid was added to a three-necked flask with a stirrer, a condensing device and a thermometer in turn, and the rotation speed was controlled at 250r / min. The oil bath was heated to 110°C for liquefaction for 2 hours. After the reaction was completed, it was cooled to room temperature, and the ionic liquid was solid. The ionic liquid after precipitation and separation can be reused, and the liquid phase is liquefied lignin.

[0053] In parts by weight, mix 100 parts of the obtained liquefied lignin, 35 parts of p-aminobenzenesulfonic acid sulfonating agent, 40 parts of paraformaldehyde, and 500 parts of water, react at 65°C for 1h, and continue to heat up to 95°C for 3h. , naturally cooled to room temperature to obtain a biomass synthetic resin fluid loss ...

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Abstract

The invention provides a preparation method of a biomass synthetic resin filtrate reducer for drilling fluid, which comprises the following steps of: carrying out a reaction on lignin, phenol, hydrochloric acid and temperature-controlled ionic liquid to obtain liquefied lignin; and reacting the liquefied lignin with paraformaldehyde, a sulfonating agent and water to obtain a biomass synthetic resin filtrate reducer. The temperature-controlled ionic liquid is used as a solvent, so that the solubility and the reaction activity of a lignin compound in the ionic liquid can be improved, and isotropic cracking of lignin compound molecules at beta-O-4 is facilitated; and generated free radicals are combined with phenol, the molecular weight and the spatial steric hindrance of the lignin compound are reduced, the chemical reaction activity of lignin molecules is improved, subsequent sulfonation and condensation polymerization are facilitated, and an environment-friendly biomass synthetic resin filtrate reducer is obtained. The invention further provides a biomass synthetic resin filtrate reducer for drilling fluid and application thereof. The filtrate reducer is environmentally friendly, resistant to temperature and salt and easy to biodegrade.

Description

technical field [0001] The invention belongs to the technical field of petroleum industry, and in particular relates to a biomass synthetic resin fluid loss reducer for drilling fluid, a preparation method and application thereof. Background technique [0002] With the rapid increase in demand for oil and gas resources in the world and the advancement of drilling technology, countries around the world have increased their investment in the exploration and development of oil and gas resources in deep formations. my country's unproven oil and gas resources are mainly distributed in the Tarim, Junggar, Qaidam, Turpan-Hami, and Sichuan basins. 73% of the resources are buried in deep layers, and the underground conditions are extremely complex. Therefore, oil and gas drilling and supporting facilities for deep and ultra-deep wells Advanced development technology has become a key factor restricting the development of oil and gas resources. [0003] High-temperature and high-pressu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/28C09K8/035
CPCC08G8/28C09K8/035
Inventor 单海霞王中华位华周亚贤周启成蒋金宝
Owner 中石化石油工程技术服务有限公司
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