Month: June 2011

What is Sand Control?

By Oilfield glossary, sand control is one of the process of well completions. “The installation of equipment or application of techniques to prevent migration of reservoir sand into the wellbore or near-wellbore area. In weak formations, sand control may be necessary to maintain the structure of the reservoir around the wellbore. In other formation types, the migration of sand and fines into the near wellbore area may severely restrict production. Each of these conditions requires different treatments. The principal sand-control techniques include gravel packing and sand consolidation.”

Sand control focusing on gravel packing, the most popular choice.

What is Gravel packing?

Gravel packing involves the complete placement of selected gravel across the production interval to prevent the production of formation fines or sand. Any gap or interruption in the pack coverage will enable undesirable sand or fines to enter the producing system.

It includes the following components:

1 production tubing

2 production casing

3 Gravel-pack packer

4 Gravel placed in casing and perforations

5 Gravel pack screen

6 Sump packer

Sand control V.S. Solids control

Sand control has always played an important role in oil production, but solids control plays an important role in oil well drilling. They are utilized in different area.

Solids control is a technique used for well drilling to provide prepared drilling fluids for drilling rigs. Drilling fluid maintenance cost, clean up, and disposal cost as well as the overall cost of boring can be reduced dramatically when proper solids control techniques are utilized.

Continue reading “Sand control V.S. Solids control equipments”

GN solids control attends Brazil Offshore 2011 in Macae last week from 14^th to 17^th, June, 2011. We got success during the show, we met some valuable clients, we show the world of GN brand and learn from other companies.

 We met some clients and talking about proposal of drilling waste management system, decanter centrifuge, onshore and offshore drilling fluids treatment system, also we contact with big petroleum companies,drilling companies, oilfield service companies, also solids control equipments manufacturers in the world, such as Petrobras, BAKER HUGHES,TSC OFFSHORE, CPTDC, OIL STATES,NOV, Derrick, GE OIL&GAS,ETC.They are very interested in the products and service provided by GN, and hope to have further cooperation after the show.

 During Brazil Offshore 2011, we showed our main products including linear motion shale shaker, Balanced elliptical motion shale shaker, decanter centrifuge, centrifugal pump, desander, desilter, mud cleaner, vacuum degasser, mud gas separator, shaker screens and oilfield drilling rig solids control system & HDD mud system.

 If you are interested in GN solids control equipments and would like to meet us in the oil show, we could have a meeting in the following show.

1 For clients in South America, we can meet in AOG(Argentina) which is held on 10~13 October,2011.

2 For clients in Russia, we can meet in 11th Moscow International exhibition “Oil and Gas” held on 21th~24^th, June, 2011.

3 For clients worldwide, we can meet in OTC2012 held in TX, USA.

For detailed exhibition information and GN booth, we will public in GN website timely.

Continue reading “GN back from Brazil Offshore 2011 with success”

GN new designed GNZS63-4 shale shaker is mainly used for drilling fluids separation for oilfiled drilling.

What consist of GNZS63-4 shale shaker?

Deck adjustment, vibration motor, shaker deck, base frame, support, baffle box, explosion proof starter, shaker screen, wedge plate, torsional spring ,etc.

Feature of GNZS63-4 shale shaker

(1). Adopt two sets same vibration motor take advantage of double motor in-phase principle, shaker deck makes linear motion vibration at 45°sling angle, some spare parts are interchangeable with other brand shale shaker

(2). Adopts high quality reliable vibration motor provides long time operation without any problem.

(3). Shaker screen can be flat type or pyramid one. According to drilling mud property the screen can be 10~200mesh

(4) Shaker screen will be tensioned by wedge plate, this is more convenient and easy for operation it is very reliable

(5) Shaker deck is adjustable, the adjustment is worm wheel and screw type. Beside shaker deck two sides middle shaft is connecting two worm, when we make adjustment the shaker deck will be consistent and in-phase

(6) The complete shaker body will be treated by sand-blast, paint it by anticorrosive painting so it is more anti-corrosive and better appearance.

Specs of GNZS63-4 shale shaker

1 Vibrating motor: 2 x1.94KW

2 Screen Area: 3.15㎡(33.9 sq ft)

Continue reading “4 panel shale shaker for sale”

Generally speaking, decanter centrifuge plays a role in separating solids from liquids. Alfa Laval decanter centrifuge is one of the best sold centrifuges in the world, especially in South America. The other brands in South America market including Derrick, MI-Swaco, NOV, Derrick, GN, etc. GN solids control is new brand player in the market, but fast developing.

How a decanter centrifuge works

A decanter centrifuge separates solids from one or two liquid phases in one single continuous process. This is done using centrifugal forces that can be well beyond 3000 times greater than gravity.

When subject to such forces, the denser solid particles are pressed outwards against the rotating bowl wall, while the less dense liquid phase forms a concentric inner layer. Different dam plates are used to vary the depth of the liquid – the so-called pond – as required.

The sediment formed by the solid particles is continuously removed by the screw conveyor, which rotates at a different speed than the bowl. As a result, the solids are gradually “ploughed” out of the pond and up the conical “beach”.

The centrifugal force compacts the solids and expels the surplus liquid. The dried solids then discharge from the bowl. The clarified liquid phase or phases overflow the dam plates situated at the opposite end of the bowl. Baffles within the centrifuge casing direct the separated phases into the correct flow path and prevent any risk of cross-contamination. The speed of the screw conveyor may be automatically adjusted by use of the variable frequency drive (VFD) in order to adjust to variation in the solids load.

Continue reading “Alfa Laval decanter centrifuge”