Water-based drilling fluid system solid waste recycle disposal and utilization process

Abstract

The invention discloses a water-based drilling fluid system solid waste recycle disposal and utilization process. The water-based drilling fluid system solid waste recycle disposal and utilization process includes: mixing polymer drilling fluid system drilling solid wastes uniformly, inoculating microorganism strains having degradation function according to a weight ratio of 0.1%-0.3% and uniformly mixing the microorganism stains with the polymer drilling fluid system drilling solid wastes, and then uniformly mixing the polymer drilling fluid system drilling solid wastes doped with the microorganism stains with soil containing 15%-20% of water, setting a mixing weight ratio of the drilling solid wastes and the soil as 1:0.2-0.5, stacking mixtures to be disposed, and using a microorganism-soil joint system for performing degradation disposal on organic polymers in the drilling solid wastes. The water-based drilling fluid system solid waste recycle disposal and utilization process achieves bioremediation disposal for the drilling solid wastes, obtains disposal materials which can be used as soil for completion well field second ploughing, achieves recycle disposal and utilization, and then achieves disposal recycling for different categories of the drilling water-based solid wastes.

Description

technical field [0001] The invention discloses a solid waste resource disposal and utilization process of oil and gas different water-based drilling fluid systems, and belongs to the technical field of oil and gas exploration and drilling pollution control. Background technique [0002] Drilling solid waste is an inevitable product of oil and gas exploration and drilling operations, and has certain environmental hazards. The output in Sichuan and Chongqing areas is generally 0.35-0.4m 3 / m footage. At present, all kinds of conventional water-based drilling solid wastes in Sichuan and Chongqing are mixed together and sent to local brick factories for brick making disposal or solidification landfill. Different methods of collecting and sorting solid wastes for different drilling fluids are not used. If all bricks are disposed of, the volume of delivery and transshipment will be large, the disposal cost will be high, and the safety and environmental protection risks during tr...

AI Technical Summary

Problems solved by technology

If all bricks are disposed of, the volume of delivery and transshipment will be large, the disposal cost will be high, and the safety and environmental protection risks during transportation will be high. At the same time, due to the limited solid waste receiving capacity of the surrounding brick factories, the transshipment and disposal of solid waste will be affected, and it will be easy in the future. Restricted by the control of local enterprises and raising the disposal price; such as solidification landfill, the landfill volume is large, and more cement-based curing agents are required, which is not conducive to resource conservation, and landfill occupies a lot of land, which is not conducive to ecological restoration. Does not comply with the national environmental protection policy