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Drilling Waste Management Approach and Method

Drilling waste management is a hot topic these years with global attention to environmental protection, especially in O il & gas industry. Drilling waste management  into environment without any treatment is strictly forbidden. So before disposal, a series methods must be introduced to treat the cuttings and make it reach to disposal standard. Drill ing   waste   is  produced as the rock is broken by the drill bit advancing through the rock or soil; the cuttings are usually carried to the surface by  drilling fluid  circulating up from the drill bit   by  rotary ,  percussion , or auger methods. The drill ing waste  is commonly examined to make a record (a  well log ) of the subsurface materials penetrated at various depths. In the oil and gas industry, this is often called a  mud log .   One drilling method that does not produce drill ing   waste  is  core drilling , which instead produces s...

Shale Shaker Functions in Solids Control System

Shale shaker is the 1 st  stage separation equipment for oilfield solids control  system . It adopts  vibrating motor to generate vibrating force . The vibrating force  drives the drilling fluid with cuttings   pass  through the   shale shaker . When the drilling fluid  goes through the   shale shaker screen , clean mud will be filter ed and goes  into mud tank. No n- allowable bigger solids will pass the screen surface and be discharged  to cuttings pot . There are mainly two types of shale shaker applied in solids control system for drilling cuttings separation. A.  Balanced elliptical motion shale shaker . It is not recommended for oil and gas drilling since the flow capacity is big. If the mud flow is not equal, the motion of shaker will be changed. And performance will not be good. Mostly, professional users prefer linear motion for wide application. B.   Linear motion shale shaker . This is the m...

Solids Control System Equipment Mud Agitator

Application KOSUN mud agitator is part of the drilling fluids solids control equipment ,which is mainly used to agitate and mix the drilling mud to prevent solid particles settlement in circulating tank. Mud agitator is composed of explosion–proof motor, speed reducer, motor base and blade.The connections between motor and speed reducer, speeder reducer and impeller shaft by steel coupling.The impeller is welded by four blades. Structure Mud agitator mainly consists of explosion-proof motor, reducer, motor base and impeller assembly, solid couplings are used to join motor with reducer, and reducer with impeller shaft. Four vanes are installed and welded to form the impeller. Working Principle The impeller makes the fluid in vortex motion and improves the agitation effect. The pallet among the vanes can prevent solid particles in mud from depositing around the lower vanes after shutdown, which reduces the moment of resistance of deposits agai...

Vacuum Degasser and Mud Gas Separator

Vacuum Degasser Application     Gases are entrained in drilling fluid from the wellbore during normal drilling operation as well as during "kick" or well control situations, these gases present safety hazards and create operational problems, in case of the presence of hazardous gases, it is desirable to localize the point where gas is released from the mud by installing a vacuum degasser . Features & Advantages 1. Absorbing the waste gas with its own power unit independently, without the extra centrifugal pump 2. Can be worked as high power drilling mud agitator 3. Eliminating the corrosion for the solid control equipment, reducing the cost for the maintenance 4. Compact design, saving space Mud Gas Separator Application The field-proven KOSUN mud gas separator is an extremely reliable and vital piece of safety equipment for today drilling operations. It is ideal for use where drilling is likely to encounter large volumes...

Shale Shaker Screens Types and Application

S hale shakers typically consist of wire mesh  shaker screens  in various mesh sizes that shake or vibrate the drill cuttings which across and off the shaker screens as the drilling fluid or drilling mud flows through shaker screen s  and back into the drilling mud system.  There are mainly three types of shaker screens for different types of shale shakers, like PWP screen, PMD screen, and hook strip screen. PMD screens are Derrick ’ s patented products for Derrick 2000 series and Derrick 500 series shale shakers . While PWP and hook strip screens are widely used for world famous shale shakers like brand M-I SWACO, Derrick, Brandt and KOSUN. Hook strip s creen s  is a  common kind of s hale s haker s   s creen, which can be widely used in different conditions in drilling operation. This screen is constructed with two  or three layers of stainless steel wire cloths bonded to a steel...

Linear Motion Shale Shaker Function and Application

Linear motion shale shaker  is  the  first stage  solids control equipment in drilling fluid   processing system, well  known as solids treating  equipment in solids control system . Linear motion shale shaker  decides the performance of the whole solids control system . Linear motion shale shaker  for solids control system   remove s  dril l  cuttings from drilling fluid during   mud circulat ion  and drilling.  Controlling the solids in drilling fluid is important to control  drilling  cost and protect environment. Linear m otion s hale s haker s typically consist of wire mesh shaker screens in  various mesh sizes that shake or vibrate the drill cuttings  which across and off the screens as the drilling fluid or drilling mud flows through shaker screen  and back into the drilling mud  system. This separates the solid drill cuttings from the fluid so that it can be recircu...

Decanter Centrifuge Application in Oil & Gas Industry

Application D ecanter centrifuge is used in separating suspension of solid phase with 2~70% solid concentration, liquid viscosity ≤0.01PaS, particle diameter d≥2μm, in clarifying suspensions with little solids as well as amorphous material that brings difficulties for filtering cloth regeneration and suspensions which have a big change range in solid phase concentration. T he d ecanter centrifuge is also used in the solid-liquid separation  in the fields of oil & gas industry , chemical industry, food, pharmacy and environmental protection, carrying out dehydration of solid phase, liquid clarifying, liquid-liquid-solid separating, granularity grading and other separating processes. Structure DC series horizontal decanter centrifuge is driven by two motors. The main motor drives the drum and the outer casing of differential through belts while the auxiliary motor, after the differential shifting speed, drives the spiral propeller. This will make the drum and t...

Drilling Waste Separation System Information

As the drill bit grinds downward through the rock layers, it generates large amounts of ground-up rock known as drill ing waste . The conventional process of drilling oil and gas wells uses a rotary drill bit that is lubricated by drilling fluids or mud. This section discusses several alternative drilling practices that result in a lower volume of drilling waste  generated. Usually wells are not drilled from top to bottom at the same diameter, but rather in a series of progressively smaller-diameter intervals. Oil and gas wells are constructed with multiple layers of pipe known as casing. The top interval is drilled starting at the surface and has the largest diameter hole with large quantity of  drill ing waste . Drill bits are available in many sizes to drill different diameter holes. The hole diameter can be 20" or larger for the uppermost sections of the well, followed by different combinations of progressively smaller diameters....