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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 solid cylinders of rock or soil.   In cable-tool drilling, the drilling waste  i

DC Decanter Centrifugal Operation Principle

Separation of solids and fluid  is completed   within the  drum. Its principle is high-speed rotating drum drive inner mud rotate speedily  then  the mud is thrown onto drum’s surface  to make  a fluid circle. Under the centrifugal force, solid sedimentary force in the separated liquid will be several hundred even thousands of times heavier than its own gravity so as to separate the solids from the suspension quickly. The ratio of centrifugal force which the solids have gained and the solid’s gravity is called as separating factor. The larger the centrifugal force, the finer the separated solids, so three types of centrifuge can get according to separating factor. Hydraulic Coupler Operation Principle Hydraulic coupler mounted on main motor, it is a hydrodynamic transmission device, have the function of buffering starting shock, reduce starting current and overload protection .  It consists of shell, turbine, pump wheel, input shaft, output pulley; shell is joined with turbine, ou

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 the s

Drilling Waste Management Processing Craft Description

During oil & gas exploration and production, there are lots of drilling cuttings  and fluid  generated. These drilling waste will leak into earth with time going which is great harm to surface and ground water and the surrounding environment even causes pollution, especially in sensitive area harmful to human health and life. Therefore, it is crucial important to drilling waste management before discharged. Here is a simple processing procedure for drilling waste management. The screw conveyor mounted under the shale shaker is used for collecting drilling cuttings from shale shakers and mud cleaners (desander or desilter), then convey the drilling cuttings to the H-G dryer for solid-liquid drilling waste management . There is one conical buried tank under the shale shakers for discharging mud and alleviate the grit in mud tank. Otherwise, if serious grouting off happened, the overflow mud will enter into the conical buries tank to prevent mud grounding. There i