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Extracting solvent for treating oil-based drillings and preparation method thereof

A technology for extracting solvents and oil-based cuttings, which is applied in the field of extraction solvents for oil-based cuttings and its preparation, can solve the problems of low recycling rate, high economic cost, volatile flash point, etc., and achieve low equipment requirements, High safety and good extraction effect

Active Publication Date: 2016-10-12
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the existing conventional solvents that are volatile and have low flash point, resulting in low recycling rate, high economic cost, serious environmental pollution and potential safety hazards.

Method used

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  • Extracting solvent for treating oil-based drillings and preparation method thereof
  • Extracting solvent for treating oil-based drillings and preparation method thereof
  • Extracting solvent for treating oil-based drillings and preparation method thereof

Examples

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Embodiment 1

[0032] In this embodiment, an extraction solvent for treating oil-based drilling cuttings is prepared by blending the following raw materials according to the mass ratio into the solvent:

[0033] 40-60 parts of chlorinated alkanes, the chlorinated alkanes are 1-chlorododecane or 1-chlorotridecane or 1-chlorotetradecane;

[0034] 5-10 parts of magnesium powder, the particle size of magnesium powder is 75μm-150μm;

[0035] 20-40 parts of chlorinated olefins, the chlorinated olefins are tetrachloroethylene or trichloroethylene;

[0036] Wherein, the mass of the solvent is 40-60% of the total mass of the raw materials, and the solvent is anhydrous ether or tetrahydrofuran.

[0037] This embodiment provides an extraction solvent with good oil solubility, low volatility and high flash point, which can solve the problem that existing conventional solvents are volatile and low in flash point, resulting in low recycling rate, high economic cost, and serious problems. Environmental p...

Embodiment 2

[0039] This embodiment provides a method for preparing an extraction solvent for oil-based drilling cuttings, comprising the following steps:

[0040] 1) Weigh the raw materials according to the ratio: chlorinated alkanes, magnesium powder and chlorinated olefins; and prepare 40-60% of the total mass of raw materials as a solvent;

[0041] 2) Infuse nitrogen gas into the reaction vessel for protection, then add the solvent, chlorinated alkanes and magnesium powder prepared in step 1) in sequence, and when the reaction temperature reaches 20-30°C, stir and react at 100r / min for 1-3h ;

[0042] 3) Add the catalyst cuprous chloride and the chloroalkene prepared in step 1) into the reaction vessel, and when the reaction temperature reaches 50-70°C, stir and react at 100r / min for 3-6 hours;

[0043] 4) After the reaction is completed, heat to 70-80°C to distill and filter to obtain the required extraction solvent for oil-based drilling cuttings.

Embodiment 3

[0045] This embodiment carries out concrete implementation description in conjunction with embodiment 1 and embodiment 2:

[0046] This example provides an extraction solvent for oil-based drilling cuttings, which is prepared from the following raw materials according to the mass ratio: 1-chlorotetradecane: 60 parts, magnesium powder with a particle size of 75 μm (purity: 99.8%): 5 parts , Tetrachloroethylene: 35 parts.

[0047] The extraction solvent for treating oil-based drilling cuttings is prepared according to the following method: Weigh the raw materials respectively according to the proportion, respectively weigh anhydrous ether and 1% cuprous chloride whose mass is 50% of the total mass of the raw materials; Introduce nitrogen for protection, add anhydrous ether, 1-chlorotetradecane, and magnesium powder in sequence in proportion, keep the temperature at 20°C and react for 2 hours under stirring at a speed of 100r / min; add cuprous chloride and tetrachloroethylene in s...

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Abstract

The invention belongs to the technical field of oil-based drilling treatment, and particularly relates to an extracting solvent for treating oil-based drillings and a preparation method thereof. The extracting solvent is prepared from alkyl chloride, magnesium powder and vinyl chloride in a solvent. The preparation method comprises the following steps: adding the solvent in a reaction vessel, pumping nitrogen for protection, and then sequentially adding the solvent, the alkyl chloride and the magnesium powder for reaction; then adding a catalyst and the vinyl chloride in the reaction vessel for reaction, and heating, distilling and filtering after the reaction is completed, thus obtaining the extracting solvent. According to the extracting solvent disclosed by the invention, the problems of lower circulation utilization rate, higher economic cost, serious environment pollution and serious potential safety hazard caused by volatility and low flash point of an existing conventional solvent are solved, and the extracting solvent has the advantages of high flash point, high security, good extracting effect, high recovery rate, small emission pollution, simple process technology, easiness in implementation and the like.

Description

technical field [0001] The invention belongs to the technical field of oil-based drilling cuttings treatment, and in particular relates to an extraction solvent for treating oil-based drilling cuttings and a preparation method thereof. Background technique [0002] In the drilling process, oil-based drilling fluid has irreplaceable advantages over water-based drilling fluid, and its technology and process are relatively mature. Therefore, more and more oil-based drilling fluids are used for drilling, and they have been widely used in deep wells, ultra-deep wells, horizontal wells, and exploration wells in shale gas and conventional gas reservoirs. However, the oil-based drilling cuttings produced during the drilling process are dangerous wastes containing oil, which have a serious impact on the environment, ecology and safety. [0003] At present, such oil-based drilling cuttings are mainly processed by pyrolysis, centrifugal partial deoiling, packaging and delivery, and co...

Claims

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Application Information

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IPC IPC(8): C10G1/04
CPCC10G1/04C10G2300/1003
Inventor 凡帆王长宁杨斌金祥哲张小平吴满祥陈磊蔺文洁丁磊王国庆陈龙赵雷高洁张艺聪蒋振伟
Owner BC P INC CHINA NAT PETROLEUM CORP
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