Month: March 2018

At present, more and more customers have noticed the considerable prospects of domestic oil sands disposal projects, and drill cuttings dryers are one of the most common separation methods among oil sands separation methods. However, what is the economic benefit of the use of rock chip dryers in the recovery of waste oil-based drilling fluids?

Let us make a simple analysis and evaluation:

1. Generally, the oil content of drill cuttings with oil-based drilling fluid is 20%, and the oil content of drill cuttings after spinning treatment is about 10%. Dryer processing capacity of about 10t / h, 25 tons of debris can be recovered 1 tons of impurities in oil (cuttings density of 2.5t / m3). 0.4 tons of oil after purification. Each ton of oil can make a profit of 15,000 yuan (CNY), 0.4tx1.5 yuan/t=0.6 yuan (CNY).
2. There are 7 persons required to build the factory in a centralized manner. The annual cost of personnel is about 1 million (CNY) (the estimated annual income of employees), and the cost per person per day is about 397 yuan. 7 people cost 2778 yuan per day (CNY).

3, equipment depreciation fee to pay 250 ÷ 3 ÷ 12 ÷ 30 ≈ 2315 yuan / day (calculated as 2.5 million yuan total equipment manufacturing). The recovery of 1 ton of oil products requires the payment of 2315 ÷ 24 × 3 = 289 yuan. (The solids control equipment will be depreciated in 3 years and calculated in 360 days per year)

4. Site construction and lease fee 100÷3÷12÷30=926yuan (CNY)/day. (site construction and rental fees are calculated based on 1 million yuan (CNY))

5、Equipment electricity fee: According to the dryer, processing 10 tons of oil-based drill cuttings per hour, and producing 1 ton of oil requires 2.5 hours of electricity and the cost is 40×2×2.5×1≈200 yuan.

6. Vehicle use fee: RMB 1200 for each 30 tons of vehicles, RMB 400 for each ton, and RMB 25×400 for each ton of oil produced.

7, diesel, water costs 50 yuan (CNY)

8, equipment maintenance costs about 50 yuan (CNY)

9, other costs of about 200 yuan (CNY), (environmental protection, fire, out, foreign employment, etc.).

6000-289-200-2778-1000-50-50-200-926=507 yuan (CNY)

Two dryers can produce 6.4 tons of oil products every day for 8 hours. The income is RMB 38,400 and the profit is RMB 3224.8 (CNY).

 

This is suitable equipment to save cost for client,with more detail,please contact GN solids control

GN Solid Controls has devoted many years to the R&D and production of mud solids control equipment and waste mud processing equipment. At present, the product line covers more than 40 types, covering the fields of oil and gas drilling, construction mud purification, oil sludge treatment, and river clearing. In the field of silt treatment, the solid-liquid waste environmental protection field, and the six major types of professional equipment in the field of medium transportation are processed and manufactured.

The following describes a widely used conveying conveyor,screw conveyor mechanical equipment, screw conveyor application is very extensive, mainly the use of rotating spiral blades will be pushed into the material to be transported to the other end of the shell discharge. Spiral conveyors are widely used in food, pharmaceutical, chemical, papermaking, environmental protection, metallurgy, building materials, petroleum, electric power and other industries. There are many types of screw conveyors to meet the requirements of different working conditions and different materials.

 

The difference between GN solid-contained screw conveyors and ordinary conveyor manufacturers is that GN solid control’s production, processing and manufacturing standards meet the requirements of high-risk operation sites such as petroleum, mining, marine, and chemical engineering. The screw conveyors produced meet the requirements of the American Petroleum Institute. API manufacturing standards, meet EU export CE certification standards, and meet Australian national security and environmental standards. GN solid-controlled screw conveyors are characterized by high wear resistance, strong acid and alkali resistance, oil resistance, and easy maintenance.

 

Structural features:

1, simple structure, cross-sectional size, small size, easy to arrange.

2, easy to load or unload at different locations, that is, you can set a number of feeding port or discharge port.

3, operation safety, easy maintenance.

4, have a good seal, keep the environment clean.

5, the delivery of easily broken materials, the higher the broken rate.

6, when the material is conveyed to overcome the friction of the material, so the spiral blade wear.

7, with high wear resistance, strong acid and alkali resistance, oil resistance and other characteristics, can adapt to high-risk, rough workplace.

More question,please contact GN solids control

It is well known that oil-based mud is often used for drilling in shale gas drilling projects. The properties of the oil-based mud also determine that the oil-based drill cuttings are often much more difficult to handle than water-based cuttings and the cost is much higher. At this time, customers often choose to focus on oil-based drill cuttings.

Here we briefly introduce the application of the GN cuttings dryer to oil-based drill cuttings.

 

In the first step, the drill cuttings processed by solid-phase control equipment such as drilling fluid vibrating screens, de-sanders, and drilling fluid desilters are discharged into the cuttings box for unified collection during the drilling process, and the rock is lifted by a lift-swiveling forklift. Chip boxes loaded into the transport truck.

 

In the second step, according to the preset commuting route, the trucks will use the forklift trucks placed in trucks and transport them to the oil-based drill cuttings drying treatment plant.

 

In the third step, the oil-based drill cuttings are lifted and lifted by a rotary forklift to raise the cuttings box to the elevated funnel to dump the cuttings. The cuttings enter the elevated funnel and flow to the screw conveyor track, which can be adjusted by spirals. The conveyor controls the flow of cuttings and sends the cuttings evenly into the drill cuttings dryer. After the first treatment, the liquid phase is recovered by the liquid collection tank and stored in a primary treatment liquid collection tank.

 

In the fourth step, the solid waste is transported to the debris box through the screw conveyor at the bottom of the dryer for subsequent processing. The liquid phase after primary treatment is pumped into the high-speed mud centrifuge for secondary treatment via the screw pump on the collection tank, and the waste discharged from the mud outlet is collected in the cuttings box for treatment, and the liquid discharged from the discharge pipe of the centrifuge is discharged. The phase is a clean, recyclable white oil that is stored in a secondary treatment liquid collection tank.

 

Finally, the solid phases discharged from the spin dryer and the centrifuge are all stored in special debris boxes. After being collectively collected, they are loaded into trucks by lifting and rotating forklift trucks and transported by trucks to incineration plants, brick factories, cement plants, etc. Waste-producing manufacturers perform the final waste utilization or detoxification treatment.

The test data collected by the barite recovery system produced by our company shows that:

1. Barite recycling centrifuge: The rotation speed is about 1800RPM, the “G” value is about 700, the low density separation point: 6 ~ 10μm, and the high density separation point: 4 ~ 10μm.

 

2. Large-capacity centrifuge: The rotation speed is about 1900-2200 RPM, the “G” value is about 800, and the low-density separation point is 5-7 μm (not in the drilling fluid), which is used to exclude the low-density solid phase;

 

3. High-speed centrifuge: The rotation speed is about 2500~3300 RPM, and the “G” value is about 1200~2100. The low-density separation point: 2~5μm is mainly used to remove the low-density content in the un-weighted drilling fluid.

The influence of various parameters of the centrifuge on the operation of the barite recovery system:

1. Main engine rotation speed V: It is mainly used to control the size of the particle size of the separated particles. The higher the rotation speed, the smaller the particle size can be separated.

 

2. Auxiliary machine (drum) speed V2: mainly used to control the pushing speed, the higher the speed, when the host speed is constant, due to the difference in speed [X = (V1-V2) / differential speed ratio] reduced ( V1: differential shaft input shaft speed), pushing material speed is reduced, at the same time, due to the reduction of pushing material speed, small particle size particles have settling time, which makes the proportion of small-size particles discharged out of the solid phase increase;

 

3. Liquid supply volume: The amount of liquid supplied by the system determines the speed of the mud cleaning system to treat the drilling fluid, and it also affects the effect of barite recovery: the greater the amount of liquid supplied, the greater the amount of drilling fluid to be treated. The amount of barite that needs to settle during the time increases. When the sedimentation amount exceeds the system discharge amount, a part of the barite does not have enough time to settle, and the liquid phase separated by the centrifuge carries out the centrifuge system, thereby reducing the barite recovery rate. At the same time, as the amount of liquid supplied is increased, more barite is recovered, which may cause system operation failures, in particular, the increase of solid adherence on the screw feeder of the centrifuge, resulting in the balance of the centrifuge drum. Not enough but strong vibration and stuck.

 

4. Meniscus: mainly controls the sediment thickness (liquid pool depth) in the drum of the mud centrifuge and the water content of the solids discharged, and affects the particle size: when the meniscus is completely removed (the height is lowest) The grit thickness (liquid pool depth) is the shallowest, the water content of the solids discharged is the lowest, and the content of small-size particles is the least, but at the same time the pushing load is increased. When the height of the meniscus is the highest, the thickness of the grit sand (the depth of the liquid pool) is the deepest, the water content of the solids discharged is the largest, the content of the small-size particles is the highest, and the pushing load is reduced. Therefore, the depth of the liquid pool must be properly adjusted when the treated drilling fluid contains a large amount of liquid and has a high viscosity.

More question,please contact GN solids control