KOSUN Drilling Mud Solids Control System can Effectively Separate the Large Drilling Cuttings
As everyone knows, drilling mud is the blood of oil drilling system, and it is very precious. The drilling mud solids control system can effectively separate the large drilling cuttings, barite and other large solid particles contained in the drilling mud returned to the ground from well. The treated drilling mud can be used repeatedly.Solids control equipment play a very important role in oil exploitation,and the maintenance of solids control is also a very important part for its purification handling. Following are some skills used in purification of solids control equipments.
The drilling mud has the following roles:
(1) Balance (control) the formation pressure, to avoid well blowout and lost circulation, and prevent formation fluid from polluting the drilling mud.
(2) Balance the pressure at side of borehole wall, form filter cake at side wall of the well to close and stabilize the side wall, preventing hydrocarbon reservoir pollution and hole-wall collapsing.
(3) Clean the shaft bottom and carry out the drilling cuttings. Keep the shaft bottom clean and prevent repeated cutting of drill bit, so as to reduce abrasion and increase efficiency.
(4) Cool and lubricate the drill bit and drill string. Reduce the temperature of drill bit and reduce drilling tool abrasion, so as to extend the service life of drilling tools.
(5) Suspend the drilling cuttings and weighting agent. Reduce the sedimentation velocity of drilling cuttings to prevent settling sand from blocking the drilling rig.
(6) Remove the sand and rock debris at ground level.
(7) Effectively transmit the water power. Transmit the power and drill bit water power required by downhole motor drill.
(8) Bear partial weight of the drill pipe and casing pipe.
(9) Hydraulically break the rock. The high-speed jet formed by drilling mud through nozzle can directly break or help to break the rocks.
In spite of the high difficulty exploration of shale gas, its exploration is still within present capability accounting for the similar method to oil, gas and gas layer. Accordingly, exploration of shale gas also needs drilling, collecting and final processing. Therefore, drilling mud solid control system equipment including shale shakers, vacuum degassers, desanders, desilters, decanter centrifuges and accessories such as mud tanks, centrifugal pumps and mud agitators are all needed in the process of shale gas exploration.
Decanter Centrifuge is Widely Used in Drilling Mud Separation
KOSUN Drilling Mud Decanter Centrifuges are designed specifically to remove unwanted solids and fine particles from virtually all kinds of used drilling mud, including those based on water/synthetics and conventional oil-based drilling fluids.
Decanter centrifuge is widely used in drilling mud separation to separate smaller solid particles after the equipment processing such as drilling mud shale shaker and drilling fluids mud cleaner or desander and desilter. Usually, decanter centrifuge is equipped with screw pumps or slurry pumps to feed drilling mud to the centrifuge. Correct and proper operation and good condition make sure that drilling mud decanter centrifuge operate ordinarily with high performance. Next, in this essay, expedient measures to maintain drilling fluids will be closely described by steps.
Tilting the decanting centrifuge of Solid control equipment usages is mainly used for the suspension of solid particles and liquid separation; Or emulsion in the two kinds of different density and mutual miscibility of liquid separation (such as isolated from milk cream); It can also be used to eliminate wet solid in the liquid, such as use washing machine to jilt dry wet clothes; Special speed tubular separator can separate different density of gas mixture; With different density and particle size of solid particles in a liquid sedimentation velocity of different characteristics, some sedimentation centrifuge for solid particles according to density and grain size grading.
VERTI-G Dryer Shaker can Deliver Dry Solids Under the Most Severe Loading
In the request for improved environmental practices, operators need solutions that take liquids/solids separation to a new level. The vertical centrifuge incorporates a high-speed vertical cuttings dryer that achieves maximum liquids/solids separation in large-volume processing. It gives operators a critical advantage in meeting increasingly stringent environmental regulations for onshore and offshore cutting disposal.
KOSUN VC-1000 series vertical centrifuges selected by the African customer are vertical flight discharge centrifuges and separate liquid from solids by using the operating principle of centrifugal separation. The vertical centrifuge can effectively recover the liquid from drilling cuttings and make solids very dry, which is suitable for water-base mud, oil-base mud and synthetic-base mud. The recycling of mud in cuttings reduces drilling cost and pollution to environment. Its capacity is 40~60t/h, and the liquid/oil on cuttings treated is below 5% (w/w), which is up to international discharge standards and environmental requirements. The equipment can be used in drilling cuttings treatment in onshore and offshore drilling operations.
The DWM Solids control of vertical centrifuge is capable of processing over 50 tons per hour and VERTI-G dryer shaker can deliver dry solids under the most severe loading. Vertical cuttings dryer has seen duty on rigs where instantaneous drilling conditions have reached 300ft per hour and was able to process these rates comfortably. But price than conventional drilling and completion of domestic waste higher processing means a lot, drying shaker to be in the country to promote the foreign advanced equipment and technology, we must first solve the cost problem.
Oilfields Drilling Solids Control System Equipment Used in Domestic and Abroad
In oilfields drilling plant, normal working state of any system equipment is the basic requirement of drilling. Solid control system is one of the most important circulation system in the drilling process, and in last essay, three kinds of common faults and according solutions have been described. In this essay we will mainly talk about another tips of drilling mud solids control equipment operation, which will improve drilling efficiency to a great extent.
Sometimes solids control equipment desander and desilter in swirling funnel will be blocked causing equipment can not be used, the reason is the use of unreasonable or shaker screen cloth damage, followed by addition Sand Pump and except water pipes mud pump not installed filters, large particles into the cyclone funnel debris caused by blocked. Therefore, we must ensure a reasonable installation location, the complete parts’ installation.
When the solids control equipment being used in drilling,the mud agitator is an often damaged equipment. The main reason is high fluid density, high viscosity, low power mixer, resulting overload of use and can not insist on continuous operation. If no timely maintenance,lubrication and unreasonable installation,they can also cause this phenomenon. So we need to pay attention when we maintaining and repairing the equipment, we must operate it in normal methods so that we can get normal efficiency.
With 23 years development, Xian KOSUN Machinery CO., Ltd. always insists on the idea of realizing the maximum value of customers, share holders and staff and supporting clients with superior and high quality and service of KOSUN products, which, to some extent, reflecting the development principle and base of KOSUN.
KOSUN DC Series Decanter Centrifuge Separation Principle
As everybody knows, drilling mud is the blood of oil drilling system, and it is very precious. The drilling mud solids control system can effectively separate the large drilling cuttings, barite and other large solid particles contained in the drilling mud returned to the ground from well. The treated drilling mud can be used repeatedly. The role of drilling mud solids control is to treat and recycle the drilling mud returned to the ground from well with solids control system or some solids control equipment, so as to reduce the drilling cost and protect environment.
KOSUN DC series decanter centrifuge is used in separating suspension of solids phase with particle diameter(d≥2μm) for drilling mud and fluids handling. Ruggedly built for oilfield and industrial services, it is especially effective in environmentally sensitive areas. It delivers high fluid-recovery rates and efficient solids control to significantly reduce the costs of makeup fluids and disposal. The centrifuge must test the dynamic balance for smooth operation over long periods.Speed ranging from 0 to 3900 RPM, generating centrifugal forces reach up to 3000G.
The mud separation process between solid phase and liquid phase is completed in the roller. Decanter centrifuge separation principle is to use high-speed rotating roller driven into the mud in the high speed rotating drum, mud was dumped into the wall to form a liquid circle, solid phased particles of liquid ring get greater than its own gravity for undreds or even thousands of times the effect of centrifugal force, will overcome the resistance of the slurry viscosity to the roller on the inner wall of rapid subsidence formed solid layer, liquid forming liquid layer.
KOSUN decanter centrifuge can meet with different requirements of mud treatment under various drilling conditions, that can do sedimentation and separation for particles more than 2 um. KOSUN is a decanting centrifuge supplier in China. After treatment, the mud can achieve ideal viscosity an proportion, results in better recycling, high efficiency, saving and environment protection.
Drilling Mud Decanter Centrifuge Separation Principle
KOSUN drilling mud decanter centrifuges unit of measurement designed to deliver high fluid recovery rates and economical solids management. Together, that adds up to an enormous reduction at intervals the operator’s total fluids worth and fewer waste for disposal.
The KOSUN line of ruggedly built drilling decanting centrifuge were designed for every field and industrial applications. They are notably effective in meeting the fluid-on-cuttings discharge desires in environmentally sensitive areas.
The series of horizontal centrifuge by our company has been developed a few years with the continual improvement and improvement style, that possesses the characteristics of excellent results of separation and settlement, yet as lots of abundance, reliable work, longer life, lower energy consumption, simple maintenance, sleek operation, lower noises, etc.
Drilling mud decanter centrifuge separation principle is to use high-speed rotating roller driven into the mud within the high speed rotating drum, mud was drop into the wall to create a liquid circle, solid phased particles of liquid ring get bigger than its own gravity for undreds or maybe thousands of times the result of force, can overcome the resistance of the suspension body to the roller on the inner wall of fast subsidence fashioned solid layer, liquid forming liquid layer.
Hi-G shaker and Vertical Cuttings Dryer in Drilling Waste Treatment
In recent years, although domestic onshore oil and gas regions have devoted great efforts to management of waste generated in well drilling and well completion, the techniques still remain too inefficient to dispose waste thoroughly. Nowadays, domestic and foreign drilling waste management solutions differ greatly in technological solutions, supporting equipment and environmental investments.
The mud treated by solids control equipment can be directly put into use, and the dewatered waste can be directly delivered by conveyor to Hi-G shaker and vertical cuttings dryer for further solid-liquid separation. The separated water can be recycled after being treated by purifying equipment. The waste residues become very dry after being treated by Hi-G shaker and vertical cuttings dryer, and can be finally disposed by means of solidification, biodegradation, thermal desorption and cuttings reinjection, by which the zero discharge of waste is achieved.
Since the waste to be disposed contains much water and consumes lots of chemical agents, the solution costs much, achieves unsatisfactory results and fails to completely eliminate pollution risks. Facing local governmental requirements on environmental protection, domestic onshore oilfields now attach more and more importance to harmless drilling waste treatment and as a result, the disposal technology with solid-liquid separation as its core is applied to the drilling waste management, which replaces the out-dated direct solidification with the process integrating chemical method, solid-liquid separation and solidification method.
