Solid Control & Drilling Waste Management Solution

The use of earthen or lined pits is integral to drilling waste management. During most China  drilling operations, the drilling cuttings separated by the shale shaker are sent to a pit called the reserve pit located near the drill rig. The pit is generally open to the atmosphere, so it also accumulates stormwater and washwater from the rig. The strategic location of small pits near drilling sites can also help minimize spillage of drilling waste. Unless site characteristics are such that no significant threat to water resources can occur, liners are generally required. Where pits must be constructed adjacent to water bodies or on sloping terrain, engineering precautions incorporated into the design will help to ensure pit integrity. Precautions should be taken to prevent disposal of chemicals, refuse, debris, or other materials not intended for pit disposal. At the end of the drilling job, any hydrocarbon products floating on top of the pits are recovered and any free...

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...

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...

On Sept. 2 nd  of 2009, well YM7-12 was started to drill together with the complete set of drilling waste management  equipment operated, to uninterrupted while drilling processing the waste mud from the solid control system . On Nov. 2 nd  of 2009, the second section drilling finished. The complete system operated for a total time of 57 days, accumulative handling drilling waste mud 3450m³, including bentonite polymer mud 250m³, polymer mud 2225m³, polysulfonate drilling fluid -KC1-polysulfonate unsaturated salt water 975m³. After treatment and mud discharging, the water is 620m³, sand (drilling cuttings>5mm) 170m³, non-harmful mud clay 1150m³. Through monitoring and sample test to the mud clay and discharged water, all material during the whole operation reached to discharging standard. On May 5 th  of 2010, well Ha 702 was conducted a second time pilot test. This well is a three stage structure. The first drilling section is 419.1mm big wellbore, the seco...

E pisode I  Tarim Oilfield Drilling Waste  Treatment Current Situation Drilling cuttings is the main waste produced during drilling operation, including clay, heavy material, chemical treating agent, waste water, sump oil and drilling cuttings, and the kinds of polymer, heavy metal ion, salt, pitch and other modifying substance is harmful to environment. During drilling , each well generally produces about 800m³ drilling waste fluid, the drilling cuttings has no recovery value, only be piled up at wellsite mud pit, and the environment pollution is caused by hidden dangers. During recent years, Tarim oilfield oil and gas resources developed rapidly. And with the drilling wells quantity continuous increasing, the cumulative drilling waste has been placing a growing hazard to environment pollution. According to statistical data, in year 2009, the Tarim oilfield drilling waste reached to 130,000m³, including drilling cuttings about 50,000. While in year 2010, the dril...

In  geotechnical engineering ,   drilling fluid is used to aid the drilling of  boreholes   into the earth , o ften used while drilling  oil  and  natural gas  wells and on exploration drilling rigs , and  also for much simpler boreholes  like   water wells . Liquid drilling fluid is often called drilling mud. The three main categories of drilling fluids are water-based mud (which can be dispersed and non-dispersed), non-aqueous mud, usually called oil-based mud, and gaseous drilling fluid, in which a wide range of  gases  can be used. The main functions of drilling fluids include :  providing  hydrostatic pressure  to prevent  formation fluids  from entering into the well bore, keeping the  drill bit  cool and clean during drilling, carrying out drill cuttings, and suspending the drill cuttings while drilling is paused and when the drilling assembly is brought in and out...

With the increasing attention to environmental protection, drilling waste randomly disposal has been seriously forbid by many countries. Considering the global need of such kind of equipment need, KOSUN  focused on drilling waste management solutions for many years. Contamination of drilling fluids  with drilled cuttings is an unavoidable consequence of successful drilling operations. If the  drilling fluid  does not carry cuttings and caving  to the surface, the rig is not either “making hole” or soon will be stuck in the hole it is making. The drill cuttings that are separated from the drilling fluid on the surface by the so lid s control equipment and some quantity of unrecoverable or economically unwanted drilling fluid are a major source of drilling waste. Drilled and formation solids that are sized smaller than can be removed by the solids control equipment are often reported as drill solids. Some quantity of drill s...