Drilling Waste Management Techniques and Solutions

During the process of oil exploration and production, a large amount of waste is usually left at well sites, which is kept in sewage pits. However, the poorly treated solid waste may have a bad effect on underground water and surface water, endanger the surrounding ecological environment and even cause pollution accidents when sewage pits leak, overflow or are inundated due to rain wash during the rainy season. Therefore, it is now a very important task for oilfield enterprises to take relevant waste management techniques to fight against the harmful waste and reduce its harm to environment to the greatest extent possible.

http://www.kosunsolidscontrol.com/drilling-waste-management/hi-g-drying-shaker.html

In recent years, although domestic onshore oil and gas regions have devoted great efforts to management of waste generated in well drilling and well completion, the techniques still remain too inefficient to dispose waste thoroughly.

Nowadays, domestic and foreign waste management solutions differ greatly in technological solutions, supporting equipment and environmental investments. Most domestic oilfields have been directly solidifying the waste in sewage pits after well drilling and well completion. When the waste in sewage pits falls into clear liquid and sludge by natural sedimentation under the effect of gravity, drain the upper clear liquid less than 1/3 of the total, and then directly add curing agent into the remaining sludge for solidification. Since the waste to be disposed contains much water and consumes lots of chemical agents, the solution costs much, achieves unsatisfactory results and fails to completely eliminate pollution risks. Facing local governmental requirements on environmental protection, domestic onshore oilfields now attach more and more importance to harmless drilling waste management and as a result, the disposal technology with solid-liquid separation as its core is applied to the drilling waste management, which replaces the...