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Biomass synthetic base drilling fluid and preparation method thereof

A biomass and synthetic-based technology, applied in the field of drilling fluids, can solve the problems of difficult biodegradation and low environmental acceptability of synthetic-based drilling fluids, and achieve the effects of good ecological safety, excellent environmental protection properties, and efficient preparation methods

Inactive Publication Date: 2019-03-26
SINOPEC SSC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the synthetic-based drilling fluids disclosed above meet the drilling requirements of different complex wells in terms of performance, from the perspective of environmental acceptability, since the base fluids used are all alkane compounds, biodegradation is difficult, and the subsequent use produces Drilling cuttings are listed in the "National Hazardous Waste List" (hazardous waste list number is HW-08) because they contain hydrocarbon / water mixtures. The above shows that the traditional synthetic-based drilling fluid has a low environmental acceptability.

Method used

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  • Biomass synthetic base drilling fluid and preparation method thereof
  • Biomass synthetic base drilling fluid and preparation method thereof
  • Biomass synthetic base drilling fluid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Add 1 mol of lauryl alcohol, 0.5 mol of chloropentane, 0.5 mol of potassium hydroxide and 0.025 mol of polyethylene glycol 400 catalyst into a reaction kettle with a stirring, condensing and heating device, stir and mix evenly, at 100°C, 300rpm The reaction was carried out at room temperature for 24 hours, and the temperature was lowered to room temperature to obtain the biomass base liquid product.

[0067] The biomass base liquid product prepared in Example 1 of the present invention is carried out infrared spectrum detection, and the detection result is as follows: figure 1 as shown, figure 1 For the infrared spectrogram of the product prepared in Example 1 of the present invention, by figure 1 It can be seen that the product prepared in Example 1 of the present invention is pentyl lauryl ether, and its structural formula is: CH 3 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -O-CH 2 -CH 2 -CH 2 -CH 2 -CH 3

Embodiment 2

[0069] Add 1 mol of lauryl alcohol, 1.5 mol of n-chlorohexane, 1.5 mol of potassium hydroxide and 0.25 mol of polyethylene glycol 600 catalyst into a reaction kettle with a stirring, condensing and heating device, stir and mix evenly. After 12 hours of reaction, the temperature was lowered to room temperature, and the biomass base liquid product was obtained.

[0070] According to the method described in Example 1, the product prepared in Example 2 of the present invention is tested, and the test result is that the product lauryl hexyl ether prepared in Example 2 of the present invention has the structure: CH 3 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -O-CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 3

Embodiment 3

[0072] Add 1 mol of lauryl alcohol, 1 mol of n-heptane chloride, 1.2 mol of sodium hydroxide and 0.15 mol of polyethylene glycol 600 catalyst into a reactor equipped with a stirring, condensing and heating device, stir and mix evenly, at 140°C and 400rpm After 20 hours of reaction, the temperature was lowered to room temperature, and the biomass base liquid product was obtained.

[0073] According to the method described in Example 1, the product prepared in Example 3 of the present invention was tested, and the test result was that the product prepared in Example 3 of the present invention was lauryl heptyl ether, and its structure was: CH 3 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -O-CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 3

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Abstract

The invention provides biomass synthetic base drilling fluid and a preparation method thereof and belongs to the technical field of expansion of petroleum natural gas environment-friendly type synthetic base drilling fluid. The biomass synthetic base drilling fluid provided by the invention comprises biomass base fluid, a CaCl2 water solution, organic soil, an emulsifier, a wetting agent, a fluidloss agent, CaO and barite. The biomass base fluid, the emulsifier and the wetting agent have a cooperative agent; under the cooperative effect of all components in the drilling fluid, the biomass synthetic base drilling fluid provided by the invention has relatively good performance; and all the raw materials are green and environmentally friendly and have a relatively low price and good biodegradability, and the biomass synthetic base drilling fluid is novel green synthetic base drilling fluid.

Description

technical field [0001] The invention relates to the technical field of drilling fluid, in particular to a biomass synthesis-based drilling fluid and a preparation method thereof. Background technique [0002] With the increasing number of deep wells, ultra-deep wells, horizontal wells, and highly deviated directional wells, the probability of drilling into highly water-sensitive formations is getting higher and higher. Synthetic-based drilling fluids are obtained due to their excellent lubrication and inhibition properties. widely used. However, the base fluids currently used to prepare synthetic-based drilling fluids are mainly chemical products such as mineral oil, olefins, alkylbenzenes, and linear paraffins, which have certain environmental toxicity and poor biodegradability. already restricted. [0003] The Chinese patent document with application number 201210579597.0 discloses a synthetic base drilling fluid, the base fluid used is linear paraffin. The Chinese pate...

Claims

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Application Information

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IPC IPC(8): C09K8/32
CPCC09K8/32C09K2208/12C09K2208/34
Inventor 单海霞王中华刘明华徐勤周亚贤孙举
Owner SINOPEC SSC
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