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Monthly Archives: January 2015

Importance of use shear pump in solid control system

Shear Pump is new tape equipment which provides the fast configuration and treatment mud for the user, the user satisfy with configuration high performance mud. It can meet the requirements of customers with high-performance mud.

To improve the drill fluid properties, the polymers or clay should be highly sheared before adding them to the drill fluid system. The product can effectively mix and fully hydrate the material added into the drilling fluid, which can save the added polymer and shorten mud configuration time.

shear pumps

Structure features of drilling fluid shear pumps

1. Through special design, the impeller which is the main component of the mud shear pump has a wider flow path and smooth vanes.
2. The shaft of the product is designed with high strength to bear certain load.
3. With a hopper, mud gun and transfer line orifice plate available, the mud shear pump can be used as a belt driven or diesel driven package.
4. The pump is equipped with stainless steel turbine and a shear plate.
5. The turbine drilling mud shear pump installed in the special base ,and pulley, narrow V belt and 55KW/75kw explosion-proof motor drives

Function of shear pumps

1. Make the compounds dilute, shear and hydrate in a shorter time while saving over 30% of bentonites;.
2. Greatly enhance the hydration of the soil particles.
3. Shear pump can mix material effectively, fully hydrate material, save material using, shorten drilling fluid preparation time, supply good drilling fluid performance to drilling process.

How to maintain shale shaker vibration motor

Vibration motor is the main part of drilling fluid shale shakers which is the center and power source. So how to maintain vibration motor is a very important class.

1. Eliminating the dirt on the enclosure regular intervals.
2. We must check motor fixed bolt whether is loose before used.
3. Checking the entrance cable whether have friction, bury and squeezed.
4. The motor should be ensured with the good lubrication in operation process.

Before install the motor we have already fill the defined amount appropriative high temperature lubricating grease produced by SKF company, the suitable temperature is -40~200°C.

Long vibration motor

The vibration  motor each operate 2000 hours should be filled once the LGH2 lubricating grease by oil gun, the recruitment amount of each bearing shouldn’t exceed 25.8g.
During 2000 hours if we find bearing average daily temperature rise (temperature rise is referring the motor outer skin bearing location actual measurement temperature minus outside environment temperature, demand every half month should monitor bearing temperature) above 10°C which show that maybe bearing lubrication is not enough, this time, we should decrease the lubrication interval and added amount of grease. In principle to keep replenish lubricating grease gross of each 2000 hours of each bearing can’t exceed 25.8g. For example: when lubrication interval is halved than normal condition, the replenish lubrication grease shouldn’t bigger than 12.9g. Usually the bearing average daily temperature come-up 10°C, lubrication interval and replenish lubrication grease should be halved.

SONY DSC

In order ensure the bearing can proper works, we must adopt LGHP2 high temperature lubricating grease, we should clean the oil filler hole before add the new come-up fresh lubricating grease.

In general condition, after the bearing is lubricated or re-lubricated will have a natural temperature rising and will kept on one or two days.In order to avoid dirt enter into oil filler hole to damage the bearing, we should use oil cup seals it.

5. When use the equipment which stopped with a long times. We should measure the motor winding. Using 500V tramegger measures the insulation resistance which is can’t bigger than 0.5MSZ can be used.

Notice:

If the vibration motor doesn’t operate with electrifying, we should rapidly cut off the electric source to avoid burn the motor.
After starting the machine, we should view if the motor have abnormal condition, and whether the motors have unusual sound. If the two motors can’t be synchronized operated, we should turn off the machine immediately and after troubleshooting the machine can be restarted.The motor cannot be restarted continuously for more than 5 times if the motor is under cold condition. And it cannot be restarted for more than 3 times when the machine if 5 turned off and the motor is under hot condition.

Advantages of DC mud cleaners

A mud cleaner is a combination of desanders and/or desilters to remove drilled solids from mud. Drilling mud is fed to the inlet of the hydrocyclone (desander and/or desilter) to separate particles and the underflow passes to the fine screen mesh where in particles larger than barite are discarded and thrown away. In most drilling operations, a mud cleaner is installed in its mud systems. It is usually located in a mud tank in the same location as with the desilters.

Mud cleaner1

Mud Cleaner is the second class and the third class solids control equipment which is the newest type to treat the drilling fluid. Mud cleaner has the higher cleaning function compared with separated desander and desilter. In addition to the reasonable design process, it equals another shale shaker. DC mud cleaner structure is compact, it occupy small space and the function is powerful. Mud cleaner is the ideal device of the second class and the third class solid control to treat the drilling mud.

mud cleaners

Mud Cleaner has the following Specifications:

Mounted over different type shakers
2 – Explosion proof, 3 phase, 60hz, 1800rpm vibrators
2 – Panel, 3-panel or 4 -panel screening area
Explosion-proof starter control wired to both vibrators
Up to 10 ” desilter cones
Up to 2″ desander cones
Wedgelok system provides quick screen change
Manifold, cone unders pan and feed box
Marshmellows, wedges, deck rubbers, discharge flap
AWD Jacking Mechanisms
Low maintenance shaker

Taipan Provides Drilling Update on Badada-1 Well in Kenya’s Block 2B

Taipan Resources Inc. (Taipan, the Company), through its Kenya-based subsidiary Lion Petroleum (Lion), provided Wednesday the following update on drilling operations for the Badada-1 well, Block-2B, onshore Kenya.

drilling mud cleaning system

The Badada-1 well commenced drilling operations at 14:00 GMT Jan. 7 and has been drilled to a total depth of 3,011 feet (918 meters) MDBRT (Measured Depth Below the Rotary Table) intersecting a Neogene sequence. A 20-inch casing has been set at 977 feet (298 meters) MDBRT and the well is currently drilling ahead with the 17.5-inch section to the next casing point. The plan is to drill the well to a total depth of between 9,842 and 13,123 feet (3,000 and 4,000 meters) in order to test primary targets in Tertiary age reservoirs. Lion, the operator on Block-2B, expects the well to take up to 70 days to complete.

The Company will provide further operational updates as the Badada-1 well progresses. A comprehensive update will also be provided once operations on the Badada-1 well have been fully completed and analyzed.

Taipan estimates gross mean unrisked recoverable resources of 251 million barrels of oil equivalent (Source: Sproule International Limited, February 2014) for Badada.

Vacuum degasser and mud gas separator

Vacuum degasser and mud gas separator are all the degassing equipment in oil&gas drilling fluid recyclong system. But working performance is different, now I will introducing its difference of vacuum degasser and mud gas separator.

Installation location

Vacuum degasser is usually to be as the second stage solid control equipment which is located the back of shale shaker and in front of desander and desilter. But mud gas separator is in front of the shale shaker.

mud gas separator

Degassing effect

Vacuum degasser can get rid of various gas of invasive drilling quickly. Vacuum degasser is very important for returning mud gravity, stabilizing mud viscosity and reducing drilling cost. Also, at the same time vacuum degasser can be used as a heavy-power agitator and supported applicable to all types of mud circulation purification system. But mud gas separator is commonly called a gas-buster or poor boy degasser. It captures and separates large volume of free gas within the drilling fluid. If there is a “KICK” situation, this vessel separates the mud and the gas by allowing it to flow over baffle plates.

vacuum degasser

Operational Theory

Vacuum degasser utilize negative pressure by vacuum pump to withdraw entrained gases from the mud. In order for this to work, mud is pumped through a venturi, which develops a negative pressure in the vessel by vacuum pump, thus sucking mud into the unit. The choice between horizontally- or vertically-mounted units is typically based on the footprint requirements of the specific rig.

The working principle of the mud gas separator( poor boy degasser )is simple. The drilling mud with gas mixture in the bore hole is transferred by mud return lines to the inlet of the mud gas separator, allowing it to impinge on a series of baffles which separates gas from drilling mud. The free gas flows into the flare line to be burned and the mud discharges to the shale shaker and to the mud tank.

DC Machinery screen to Russian

hookstrip screen is widely used in DCS700-3 shakers. At present we have 500 pcs  screen delivery to Russian. The size of screen is 700x1050mm. Material of the screen cloth is stainless and the frame is carbon steel.

IMG_3173(1)

Shaker screen test

These shaker screens were tested under specific procedure. The test report mainly including the API RP13C sieve testing, the conductance testing, and the non-blanked area determination.

shaker screen

Famous shaker screen manufacture

All over the world there are so many famous brand shaker screens. And the famous manufacturers enjoy high reputation and poplarity on the quality.

Conventional screen types

There are flat type shaker screen and corrugated screens. For example, for DCS series shale shakers, there are PMD or PWP type. Furthermore, the treating capacity of pyramid shaker screen is larger than flat screen.

 

Working steps of decanter centrifuges

In order to fully understand how a decanter centrifuge operates, we must first define what a centrifuge does. In many industrial jobs, solid material often mixes with liquids, contaminating water supplies or turning mud into sludge. A decanter centrifuge is useful in that it separates solids and liquids, and has become an essential component of water waste facilities and the chemical, oil, and food processing industries. Moreover, without a centrifuge, many of these companies would become so inefficient they could not function.

centrifuges

There are several types of decanter centrifuges currently utilized in the industry, the most common of which are vertical, horizontal and conveyor centrifuges. The principle behind a decanter centrifuge is based on the theory of gravitational separation.

decanter centrifuge

Working steps of decanter centrifuge

Step 1: The slurry is inserted into the centrifuge through a connecting pipe and onto a conveyor.
Step 2: Utilizing an internal feed compartment, the conveyor ushers the slurry through a nozzle into the bowl area.
Step 3: The bowl rotates at high speeds to induce gravitational forces.
Step 4: High speed rotation separates the solid material from the liquid in a matter of seconds.
Step 5: The conveyor delivers the solid material upwards where it is discharged through a nozzle.
Step 6: The solid material removed, the purified liquid is released from a separate output.

The ability to purify a liquid makes decanter centrifuges ideal for waste water treatment facilities. However, there are variety of industries for which such centrifuges play an important role. Similar to other decanter equipment, centrifuges are simple to install and do not require a foundation to build upon.

 

Diesel tank, water tank, oil tank China supplier

Diesel tank and drilling mud tank are indispensable components of the oil & gas well drilling operation site. Water tank is one of the system equipment at the oil drilling site. There is a lot of water stored in the tank to meet the requirements of water supply of the circulation tanks and fire protection.

diesel tank

Diesel tank is the specialized liquid storage tank for diesel engine and generator. It mainly consists of diesel storage tank, self-priming centrifugal oil pump, filter, flow meter, explosion-proof liquid-level switch, liquid level meter, manifolds and stainless steel valves.

mud-tank

Mud tank is a large storage container used to hold reserves of drilling fluid, also known as drilling mud, for a drill rig. Drilling fluid is used to reduce friction on drill components to allow them to work harder and faster with less risk of breaking down.

water tank

Water tank is ideally suited to manage water based drilling including flocculation water drilling, dewatering and solids control utilizing its patented multi chamber flow pattern along with an integrated polymer blending, agitating and metered injection system. The water tank cells are allocated for either dewatering or solids control and both processes take place simultaneously. This split allocation is particularly advantageous as the drilling operation closes in on total depth or the end of a hole section and the mud system needs to be dewatered for disposal and the water reclaimed for subsequent wells.

Shale shaker and mud cleaners for different drill rigs

Linear motion or balanced elliptical motion shale shaker are properly operated with API200 screens, mud cleaners have been found to remove significant quantities of drilled solids.

Mud cleaners are normally located on the surface tanks in the same position as desilters. They are frequently the same piece of equipment, with only the hydrocyclones being used while the drilling fluid is unweighted. When weighting material is added, screens are placed on the mud cleaners;”barite in, screens on.”

shale shaker

Newer rigs, especially those found offshore, are outfitted with several linear or elliptical motion shale shakers. After surface and/or intermediate casing strings have been set, fewer shale shakers are needed to handle the correspondingly lower flow rates for smaller hole sizes. Some rigs have been modified with as many as twenty 4-inch hydrocyclones mounted above one of the main shale shakers.

When drilling fluid is initially passed through a mud cleaner, the mud weight decreases, and more barite is needed to maintain density. If mud passes too quickly through the mud cleaner screen and the materials on the screen become too dry, solid particles separations will be inefficient. Barite will clump together with other solids and be carried over to discard.

DCS700-3 shale shaker is in inventory

Shale shaker is the first class solid control equipment in the drilling fluid circulating system. Shale shaker is divided into linear motion, elliptical motion, circle motion shale shaker according to the movement locus.

shale shaker

We all known,  linear motion shakers are widely used in the word with its unique features. DC Solid control absord abroad advanced features and domestic mature technology to develop the shale shaker.

DERRICK shaker

 

Recent days, DC Solid control manufactured 20 sets DCS700 shale shakers, 16 sets shale shakers are for Russian, and the rest of 4 sets are in inventory. If you have interest to know more about it please send inquiry to us.

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