Drilling mud in solid control equipment
Solid phase in drilling fluids, according to their function can be divided into two categories: one category is useful solids, such as betonies, chemical treatment agent, barite etc. another kind is harmful to home, such as drilling, inferior betonies, sand. The drilling Mud gun in solid control equipment is to remove harmful hometown, save useful solid, so as to meet the requirements of drilling technology on drilling fluid properties. Usually, the drilling fluid solid control referred to as mud solid control.
The importance of drilling mud in solid control equipment is concerned; it has become directly affect the safety, quality, fast drilling and protection of important factors of oil and gas. Mud solid control is one of the important means to realize optimizing drilling. A solid control can provide the necessary conditions for scientific drilling. Solid phase control can protect the reservoir correctly, reduce the drilling torque and friction, reduce the pressure fluctuation annulus pumping, reduce the possibility of differential pressure sticking, improving drilling speed, prolong the life of drill bit, reduce equipment wear, improve the drilling fluid circulation system to increase the life of wearing parts, wellbore stability, improve the casing conditions, reduce environmental pollution, reduce the drilling fluid cost etc.. The statistical data show that, in low density range, content of solid phase in drilling fluid reduces 1% (equivalent to the drilling fluid density decreased 0.016g/cm3), generally in the soft bottom drilling speed can be increased by 8%. Visible in the solid control benefits is very remarkable.
Waste management in solid control equipment
The Drilling mud in Solid control equipment could be solid mud drilling mud grade purification treatment, at the same time on the drilling mud was mixed, aggravating, mixing, can also recharge the wellhead mud, and has the function of detection of well kick and blowout.
Over the past few decades, petroleum and natural gas industry have taken various measures to the waste management in solid control equipment to a minimum, so as to better protect environment and public safety. Drilling operator using environmentally friendly three wastes for processing of drilling waste: in the first stage, the operator to adjust drilling process or replacement of proper drilling fluid, the drilling process waste generated at least. The second stage will have minimum drilling waste as much as possible recycling. Third, through the legal way of processing cannot recycle drilling waste.
Offshore waste management in solid control equipment is limited to emissions, recycling or shipped back to the shore for treatment. Relatively speaking, land operators have a greater range of options in the treatment of drilling dirt. Usually the onshore drilling waste treatment in situ; in the offshore platform, the majority of water base mud and cuttings and synthetic base fluid mud is thrown into the sea; some onshore drilling waste was transported to the site outside the commercial waste disposal field; and offshore oil base mud and cuttings must be returned to the bank or at the local injection to the underground.