Desander and Desilter's difference

Desander and Desilter's difference

The diameter of the hydrocyclone's upper parts is the important factor which decide the hydrocyclone's treating capacity and separation size. The diameter of the cylinder is called the nominal size of the cyclone. The lower cone part's angle is between 15-20 degrees. The diameter of underflow mouth is 10-30 mm. Generally, a group of hydrocyclones which nominal size is 150-300mm, is called Desander. And a group of hydrocyclones which nominal size is 50-125mm, is called Desilter.

(1) Hydrocyclone desander

According to the treating capacity required, the desander has one to three hydrocyclones. Each hydrocyclone's treating capacity is no less than 20-120m3/h under the pressure of 0.2 Mpa. The normal working hydrocyclones can remove 95% of particles bigger than 74 micron meters and 50% of particles bigger than 40 micron meters. In order to improve the using efficiency, in choosing the hydrocyclones, the treating capacity must be 125% of whole drilling capacity.

(2) Hydrocyclone desilter

According to the treating capacity required, the desilter has more than 4 pieces of hydrocyclones. Each hydrocyclone's treating capacity is no less than 5-15m3/h under the pressure of 0.2 Mpa. The normal working hydrocyclones can remove 95% of particles bigger than 40 micron meters and 50% of particles bigger than 15 micron meters. The desilter can remove 12-13 micron meters' barites. So the desilter can not be used in treating heavier drilling fluid. In choosing the desilter, the treating capacity must be 125%-150% of whole drilling fluid capacity.

Website: www.jxsolidscontrol.com

Email: alisa@jxsolidscontrol.com

     

The Purification Process of Drilling Fluid in the System

The Purification Process of Drilling Fluid in the System
1) Primary Purification
    Primary purification is the drilling fluid treatment through Shale shaker. The configured drilling fluid was taken into bottom of drilling well, then turn back to the ground with drilling cuttings. Through the drilling pumps then come into the shale shaker. The shale shaker separate the bigger solids out from the drilling fluid.

2). The secondary purification
     When the drilling fluid was soaked in gas, using the Vacuum degasser can remove the gas in the drilling fluid. So thus can recover the drilling fluid density, stable drilling fluid viscosity.

3). Tertiary purification
     After the secondary purification, the drilling fluid enters the Desander by the power of centrifugal pump. Through the desander's hydrocyclones, the solids size bigger than 40-60 micron meters were separated out.

4). The level fourth purification
     After the tertiary purification, the drilling fluid enters the Desilter by centrifugal pump. Through the desilter's hydrocyclones, the solids size bigger than 15-40 micron meters were separated out.

5). The fifth level purification
     The drilling fluid after the fourth level come into the Decanter Centrifuge by the power of Screw pump. The decanter centrifuge can separate the solids size 5-15 micron meters out.

Completer Photos:

     
Origin: Hebei JinXin Machinery Co., Ltd

Email: alisa@jxsolidscontrol.com

Solids Control System's Composition Equipment (II)

Now we continue yesterday's solids control system's composition equipment. To make sure the drilling fluid's good performance, different drilling rigs has different solids control equipment. According to SY/T6223-2005 "Use and Maintenance of Drilling Fluid Cleaning Device", the 4000-7000 meters' drilling rig solids control equipment is as below:

2). 

5000 meters' solids control equipment paramete
No.	Equipment Name	Parameters	Qty.
1	Mud Tank	Total effective volume is no les than 200 m3, the storage tank volume is more than 120 m3	1 Suit
2	Shale shaker	Treating capacity is no less than 181.5 m3/h	2 Sets
3	Desander	Treating capacity is no less than 181.5 m3/h	1 Set
4	Desilter	Treating capacity is no less than 181.5 m3/h	1 Set
5	Mixing Devices	Sand pump's flow rate:200m3/h, head: 36m	1 Suit
6	Shearing pump	Shearing pump's flow rate:155m3/h, head 32m	1 Set
7	Grouting pump	Flow rate: 50m3/h, head 28m	1 Set
8	Degasser	Treating capacity is no less than 181.5 m3/h	1 Set
9	Middle speed  centrifuge	Treating capacity: 40 m3/h. separation size: 5-7μm	1 Set
10	High speed Centrifuge	Treating capacity: 40 m3/h. separation size:3-5μm

3). 

7000 meters' solids control equipment paramete
No.	Equipment Name	Parameters	Qty.
1	Mud Tank	Total effective volume is no les than 270 m3, the storage tank volume is more than 160 m3	1 Suit
2	Shale shaker	Treating capacity is no less than 181.5 m3/h	2 Sets
3	Desander	Treating capacity is no less than 181.5 m3/h	1 Set
4	Desilter	Treating capacity is no less than 181.5 m3/h	1 Set
5	Degasser	Treating capacity is no less than 181.5 m3/h	1 Set
6	Middle speed  centrifuge	Treating capacity: 40 m3/h. separation size: 5-7μm	1 Set
7	High speed Centrifuge	Treating capacity: 40 m3/h. separation size:3-5μm
8	Mixing Devices	Sand pump's flow rate:200m3/h, head: 36m	2 Suit
9	Shearing pump	Shearing pump's flow rate:155m3/h, head 32m	1 Set
10	Grouting pump	Flow rate: 50m3/h, head 28m	1 Set

In the design requirement of solids control equipment, the mud tank's effective volume is the 75% of mud tank's outside size. 

Tag: Mud Tank, Solids Control Equipment, JinXin Machinery, Hebei JinXin Machinery Co.,Ltd

Solids Control System's Composition Equipment (I)

Solids Control System's Composition Equipment

Solids control system is used to store, configure, circulate and purify drilling fluid . 

Generally, its composition is Drilling fluid tank, Shale shaker, Degasser, Desander, Desilter, Centrifuge etc necessary five grade cleaning equipment. And also including overhead line (from drilling well to shale shaker), drilling pump's pumping line, mixing pimp's line, mud tank bottom connection line, feeding line, discharging line,  drilling line, shearing pump's suction and discharge line etc. 

The solids control system also equipped with drilling fluid replenishment system, chemical adding hopper, pumps, agitators, lights etc accessory equipment. In addition, the system also has passage, ladders, guard rail to make sure workers' safe.  The solids control system can remove the solids bigger than 5-15 micron meters effectively, and then keep useful solids, to provide good performance drilling fluid for the whole drilling progress.

To make sure the drilling fluid's good performance, different drilling rigs has different solids control equipment. According to SY/T6223-2005 "Use and Maintenance of Drilling Fluid Cleaning Device", the 4000-7000 meters' drilling rig solids control equipment is as below:

1) 

4000 meters' solids control equipment paramete
No.	Equipment Name	Parameters	Qty.
1	Mud Tank	Total effective volume is more than 180 m3, the storage tank volume is more than 80 mthe storage tank volume is more than 80 m3	1 Suit
2	Shale shaker	Treating capacity is no less than 181.5 m3/h	2 Sets
3	Desander	Treating capacity is no less than 181.5 m3/h	1 Set
4	Desilter	Treating capacity is no less than 181.5 m3/h	1 Set
5	Mixing Devices	Sand pump's flow rate:200m3/h, head: 36m	1 Suit
6	Shearing pump	Shearing pump's flow rate:155m3/h, head 32m	1 Set
7	Grouting pump	Flow rate: 50m3/h, head 28m	1 Set
8	Degasser	Treating capacity is no less than 181.5 m3/h	1 Set
9	Middle speed centrifuge	Treating capacity: 40 m3/h. separation size: 5-7μm	1 Set

In next blogger will continue the 5000 meters, 7000 meters' equipment details.

Thanks for your kindly support, welcome to contact with us have discussion.

Email: alisazhao@foxmail.com