The necessity of drilling waste disposal

• Dec 07, 2021
• Excessive useless solid phase in the mud has the biggest hidden danger of destroying the function of the drilling fluid, reducing the drilling rate and incurring various downhole miscellaneous conditions. In temporary practice and from time ...

Excessive useless solid phase in the mud has the biggest hidden danger of destroying the function of the drilling fluid, reducing the drilling rate and incurring various downhole miscellaneous conditions. In temporary practice and from time to time research, people have concluded that the excessively high useless solid phase in the mud will bring the following beneficial effects to the drilling task.
 

 

1. The influence of solid relative drilling speed

The solid content of mud is high, the specific gravity becomes larger, and the bottom hole pressure difference increases, which improves the holding effect of the liquid column on the rock, which is beneficial to the rock bottom of the hole. The solid content of the mud is high, and the ability to respond to drill cuttings is weakened. A small amount of larger particles of drill cuttings cannot be discharged out of the hole in time, forming a drill bit that is repeated intact cuttings, which increases the wear of the drill tool and affects the drilling speed.
 

2. The influence of solid phase on the circulatory system

The greater the solid content, the greater the mechanical wear on the circulatory system. Excessive mud will slow down the wear of mud pump cylinder liners and pistons, which will increase maintenance time and cause a decrease in drilling efficiency. Excessive solid content will also cause scaling on the inner wall of the drill pipe, which will affect the fishing of the inner pipe and voluntarily lift the drill to dispose of the fouled drill pipe, which will interrupt the general task sequence. The drilling efficiency will also be clear due to the small increase in the auxiliary operation time. reduce.
 

3. Increased waste pulp discharge, resulting in environmental pollution

During the drilling process, because the drill cuttings enter the mud from time to time, if it is not cleaned out in time, the function of the mud will change. When the mud sand content is greater than 4%, it is regarded as waste slurry and needs to be discharged and replaced with new slurry. Most of the mud is an alkaline solution. Random discharge will not only destroy vegetation, but also form soil alkalization and affect vegetation regeneration. In addition, there are some additives in the mud that make the mud color black, and a small amount of discharge will cause environmental damage. Visual pollution.
 

 

KOSUN’s corporate vision is to gather resources, based on the Chinese market, and with a spirit of responsibility and continuous innovation, to provide one-stop oil drilling fluid solids control products and waste treatment products, solutions and services, and value employees, customers, and shareholders. , Regard customer satisfaction as the pursuit of our KOSUN people.