跳至主要内容

Drilling Waste Treating by Non-landing Technology

2 Drilling waste treating non-landing target processing technology theory

2.1 Non-landing technology theory
The basic theory of “drilling waste treating non-landing target processing technology” is attenuation, flocculation and separation into three parts drilling cuttings, mud clay and fluid. That’s to say, through watering and flocculation separation and chemical reaction processing to let the drilling cuttings and mud clay reaching to discharge standard. The harmful elements and chloride ion is analyzed into water, and then formed into mud clay by vac-sorb or extrusion as well as realized useful fluid recovery. The whole craft contains three processing units.
The first processing unit: complete collecting drilling waste mud and fluid. First separating the rocks and cuttings from the collected mud thorough sand-water separation-washing-agitating equipment for agitating washing and spiral separation to release or reduce the influence of such kinds of material to subsequent processing and keep the mud in good mobility. The mud after processing is pumped into the sludge storage agitator tank with certain treating agent. After agitating and mixing, the waste mud is pumped into the second processing unit.
The second processing unit: mud and water separation. By adopting chemical treatment and multi agitating and washing to separate mud and fluid, and make the pollution material in the mud go into fluid. If there is oil pollutant in the waste fluid, it is necessary to treat by degreasing unit to recover the grease. The discharged solid can be pilled up or for paving road. The separated fluid goes into water tank for collection, and then discharged into the third processing unit.
The third processing unit: waste water processing. The fluid is with much suspended solids after centrifugal separation. It can adopt flotation sedimentation and filtration system to move it out. And then goes into reverse osmosis system for concentration treatment. The treated waste water goes into recovery water tank and is pumped into self processing system for recycling or into the recycling mud. The concentration fluid can be reused by adopting evaporative crystallization processing technology for industrial production.
标签：

评论

发表评论

此博客中的热门博文

Mono Screw Pump Working Principle and Apllication

M ono screw pump , also called  sewage pump  or  progressive cavity pump ,  belongs to the rotor type positive displacement pump .   M ono screw pump  is depend ing  on the screw meshing with liner on the discharge and suction cavity to conveying liquid volume change.   It is a kind of method of pressurized screw pump, a main working parts by bushing has a double helix cavity (stator) and the stator cavity and its meshing singlehead screw screw (rotor).   When the input shaft through the universal joint drive making planets revolving around the center of the stator, rotor stator, rotor, vice is continuous mesh form sealed cavity, the seal chamber volume invariably uniform axial movement, the medium from the suction end of deputy to the stator, rotor pressure side, the suction medium sealed cavity through the stator without stirring and destruction. M ono screw pump  is an ideal pump used to feed drilling fluids to ...
发表评论
阅读全文

Drilling Waste Disposal-Pit Burial

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...
发表评论
阅读全文

Drilling Waste Separation by Solidification and Stabilization

Drilling waste separation  from the mud at the shale shakers may be coated with so much mud that they are unsuitable for the drilling mud recycle or disposal step or are difficult to handle or transport. Constituents of the drilling cuttings or the mud coating them, like oil or metals, may leach from the drilling waste, making them unsuitable for land application or burial requirements. Kinds of materials can be added to drilling cuttings to solidify and stabilize them. Solidification is a technology that encapsulate the drilling waste in a monolithic solid of high structural integrity. The encapsulation may be of fine drilling waste particles or of a large block or container of drilling cuttings. Solidification does not necessarily involve a chemical interaction between the drilling waste separation and the solidifying reagents but may mechanically bind the drilling waste into the monolith. Contaminant migration is restrict...
发表评论
阅读全文