Oil-base illegal cooking oil lubricant for drilling fluids and preparation method thereof

Abstract

The invention provides an oil-base illegal cooking oil lubricant for drilling fluids, which comprises the following components in percentage by weight: 90-95% of illegal cooking oil, 0.1-0.15% of preservative, 0.5-1% of antioxidant, 5-7% of extreme-pressure additive, 0.1-0.15% of ultraviolet absorbent and 0.5-1% of pour-point depressant. The oil-base illegal cooking oil lubricant for drilling fluids is developed by using the illegal cooking oil as the base raw oil. The lubricant has the advantages of favorable water solubility, high stability, low fluorescence and no influence on geological logging, effectively solves the problem that the lubrication lowers the torque and friction resistance in the horizontal well drilling process, provides a brand-new way for recovery and reutilization of illegal cooking oil, has wide and profound social benefits, and has wide prospects for popularization and application.

Description

technical field

[0001] The invention specifically relates to an oil base ditch oil lubricant for drilling fluid and a preparation method thereof. Background technique

[0002] At present, with the continuous expansion of the development scale of horizontal wells in oil and gas fields (especially branched horizontal wells, ultra-long horizontal wells, gas storage wells, etc.), the horizontal section passes through a large section of carbonaceous mudstone, and the horizontal section is continuously lengthened, resulting in the The friction and torque increase significantly, leading to a sharp increase in lubricant consumption and a rapid increase in the cost of drilling fluid. Therefore, lubricant products with low cost, high efficiency, low toxicity and environmental protection characteristics have become one of the main directions of development.

[0003] At the same time, as the state strengthens the rectification of edible waste oil, effective measures are continuously in...

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