One more project for CNPC, as well known for good quality & rich experienced & higher standard research development ability, now GN waste management system is widely used in China oil field market.

This is a typical water based mud (WBM) waste management system, as in China, CNPC or whichever the big player, WBM is the most popular choice, collect the drilling waste from solids control system shale shaker, to two Hi-G dryer shakers, the G force up to 8.0. Then to the centrifuge for better separation, collect the useful drilling fluids, and get the waste solids out.

Normally the waste management system design must follow the origin design of the rig layout and solids control system. If properly designed, as this video, http://gnsolidscontrol.com/video/gn-high-g-drying-shaker-and-centrifuge-for-cnpc-wbm-waste-management, a lower tank can be arranged to collect the liquids treated by High G shaker, then it saves the delivery unit. Some clients dig a pit to place the vertical cuttings dryer, to make everything arranged properly on site.

Process of the close loop WBM drilling

1. Solids Control Mud System

This is well known, and widely used, almost a common sense for drilling operations. Even for the countries which are not so strict on environment protection, this is a must, as it actually saving drilling cost. Normally consist of shale shakers, mud cleaners and sometimes centrifuges.

2. Waste Management

GN Solids Control has designed several modular products for drilling waste management. The first one is delivery unit, which collects the waste solids from shale shaker to High G shaker, or vertical cuttings dryer. Then first step of drying, High G shaker, or vertical cuttings dryer; then the liquid go to next stage, High Speed decanter centrifuge.

The solids can be dumped after the solidification unit or TDU, which need to be collected from the dryer shaker, or vertical cuttings dryer; the liquid will be treated by centrifuge, or with a dewatering unit adding chemicals. Then finally reused or dumped to the environment.