跳至主要内容

Oil Based Mud Drilling Cuttings Treating Solutions

 

Drilling cuttings treating solutions will depend on the drilling mud characteristics. Oil-based mud is a mud where the base fluid is a petroleum product such as diesel fuel, kerosene, fuel oil, selected crude oil or mineral oil. For OBM’s complexity, the drilling cuttings treating solutions will have more strict demands on the processing  equipment.
Oil-based mud are used for many reasons, including increased lubricity, enhanced shale inhibition, and greater cleaning abilities with less viscosity. Oil-based mud also withstand greater heat without breaking down. The use of oil-based mud has special considerations, including cost, environmental considerations such as disposal of cuttings in an appropriate place, and the exploratory disadvantages of using oil-based mud, especially in wildcat wells.
Using an oil-based mud interferes with the geochemical analysis of cuttings and cores and with the determination of API gravity because the base fluid cannot be distinguished from oil returned from the formation. Successful drilling performance always come along with drilling cuttings from under ground. Those drilling cuttings mix with the drilling mud which are containing regularly 30%-40% crude oil. In this case, to recycle the oil is necessary for cost-effective drilling cuttings treating solutions. According to International Environmental Law,the oil based mud belongs to hazardous waste which can not be disposal without proper treatment.While the handling fee of the solids control is expensive and what we tried to do with the OBM UNIT is to dry and minimize the solids waste volume.

Considering the high cost and environmental pollution of oil mud in well drilling, recycle it through proper drilling cuttings treating solution for continuous drilling operation is significantly important. Just like water based mud recycle, we also need to use a series equipment to realize mud recovery.

KOSUN OBM unit is specially designed for oil based mud recycle and waste minimization. During the process, we will solid control equipment like gas-liquid separator, shakers, vacuum degasser, mud cleaner, desander, desilter, decanter centrifuge, centrifugal pump, screw pump, centrifugal pump, mud agitator and mud pump, and drilling cuttings management equipment like screw conveyor and vertical centrifuge (cuttings dryer). In this case, the solids waste can be easily stored and transferred. The late treatment charge on the solids be effectively decreased. (From yuan.yan@adkosun.com, MP (WhatsApp) +86 18602928622)
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