Mud Solids Control Equipment

GN solids control is specialist of solids control equipments for rotary rig in China, we have various kinds of mud equipments in stock, welcome to inquiry us.

Rotary rigs drill the vast majority of wells today, including all medium and deep wells. The rotary rig consists of four major systems. These include the engines, and the hoisting, rotating, and mud systems.

General of drilling mud(drilling fluids)

Common drilling mud is made of bentonite clay. A heavier drilling mud can be made by adding barite. Various chemicals are also used in different situations. The drilling mud liquid is usually water but is sometimes oil-based. Drilling mud are described by weight. Water weighs 8.3 pounds per gallon. Average bentonite drilling mud weighs from 9 to 10 ppg. Heavy drilling mud weighs from 15 to 20 pounds per gallon. The heavier the drilling mud, the greater the pressure it exerts on the bottom of the well.

Fluid is circulated while the drilling proceeds. Powerful pumps move the fluid down to the pipe, through the bit and back to the surface, carrying the cuttings and other debris with it. Thus, on a rotary rig , drilling can be continuous as stopping to bail the cuttings is no longer required.  The drilling mud also stabilizes the walls of the hole.

Mud circulation system for rotary rig

Drilling mud is stored in steel mud pits beside the rig. The drilling mud then flows down through the hollow rotating drill string and jets out through holes in the drilling bit on the bottom of the well. The drilling mud picks cuttings from the bottom of the well. It flows up the well in the space between the rotating drill string and well walls.

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Last month GN shipped 2 sets of 800gpm mud cleaner to a China Government Company for HDD project. They checked our complete mud system taken to CIPPE, and would like to request 2 sets similar one with small changes.

Now we have standard HDD mud system( mud cleaner) with standard equipments and specs for  150gpm, 350gpm, 500gpm, 800gpm, 1000gpm. Clients can make smaller changes according to his separate requirement.

To make some changes, such system can be used for water well drilling, coal bed methane, geothermal well drilling, diamond drilling, core drilling etc projects. So sometimes clients ask us to make a system with 2 functions( can be used for 2 different projects, and can meet the flow rate requirement for each project). So they can save cost for another set mud cleaner.

How to design the mud tank for the mud cleaner?

１　confirm type of the mud tank, trailer mounted, skid mounted or Hydraulic lift type.

2   confirm the dimension of the mud tank

  You need to consider 3aspects, 1 required storage capacity  2 transportation limit in Client’s country 3 international shipments limit, by container, by bulk cargo or by flat rack container.

3 confirm the qty of the mud tank(according to required mud storage capacity and equipments required place)

4 how many compartments for each tank( according to equipments and function of each compartment)

5 layout of the equipments on the tank

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GN solids control will attend Argentina Oil & Gas Expo 2011 in Otc. We just came back from Brazil Offshore 2011 last month with big success.We will attend the show with our exclusive agent in Argentina together, welcome to contact us by English, Portuguese, Spanish, Chinese languages.We have experienced Technician and Sales there to be ready to service for you.

General info. about

AOG 2011

• Show Name: Argentina Oil & Gas Expo 2011
• Show Time: 10^th to 13^th Otc 2011,14:00~21:00 p.m.
• Venue: La Rural, Buenos Aires, Argentina
• GN Booth number：Q12
• GN Booth Area: 38m2
• What GN show? GLW355X1250N high speed decanter centrifuge and GNZS70-3 linear motion shale shaker, etc, welcome to check our equipments during the show.

GN equipments and system can be used for the following projects:

1 HDD mud system

2 onshore drilling solids control system( oil & gas drilling, water well drilling, coal-bed methane drilling, geothermal well drilling,etc)

3 drilling waste management

4 liquid mud plant ( to prepare for clean mud)

What will be exhibited in the show?

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GN designed a new portable mud cleaning system(trailer mounted) recently. It is user-friendly and standard mud cleaning system for 150gpm operation.

Main features of 150gpm portable mud cleaning system

1

 Compact structure, convenient for transportation and operation.

Folded for transport Dimension: LxWxH=4000x2400x3800mm, the user did not need to disassembly any equipments or parts, just fold the walkway and hand rail to the tank before transportation from one site to another. It is very convenient.

2 Separation Point:20Microns

3 Nominal Handing capacity: 100GPM.

 How do 150gpm portable mud cleaning system work?

A: 50YZ40-10 Submersible slurry pump suck mud from the mud pit and feed to GNZS85-2 Shale shaker from the backside buffer box.

B:Shale Shaker first panel fixed with API 60 screen. Fluids from the slurry pump will flow to screens for solids screening. Fluids with particles only smaller then 250microns will go to tank 1# Compartment.

C:Shale Shaker second screen panel fixed with API 120 screen. SB3×2-12 Centrifugal pump will suck fluids from 1# Compartment and feed to 2x4inch desilter cones.The dirty mud will drops down to second screen panel for drying from the cones nipple,the cleaning fluids with particles under 20microns overflow from desilter pipe to the 2# compartment.

D:2# compartment fluids with 20microns solids separated can be feed to mud pump for drilling .

New development of GN

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GN solids control is in a process of design and manufacture vertical cutting dryer, we will get it into production in several months.

The first step in managing drilling wastes is to separate the solid cuttings from the liquid drilling mud. Once solid and liquid drilling wastes have been separated, companies can use a variety of technologies and practices to manage the wastes. For some applications, drilling wastes are solidified or stabilized prior to their ultimate management practice. The management technologies and practices can be grouped into three major categories: waste minimization, recycle/reuse, and disposal.

GN solids control equipments can make the first step of solids control, to clean the drilling mud and reuse for drilling rig.

If the solids collected by the shale shakers are still coated with so much mud that they are unsuitable for the next reuse or disposal step or if the used mud is valuable enough to collect as much of it as possible, the solids can be further treated with drying shakers utilizing high gravitational separation, vertical or horizontal rotary cuttings dryers, screw-type squeeze presses, or centrifuges. The cuttings dryers recover additional mud and produce dry, powdery cuttings.

Our equipments can do a series job for drilling cuttings management, firstly we use high G shaker to dry the drilling cuttings and recycle a small part of the drilling fluids for re-use. Most of the drilling cuttings are dried and transferred to vertical cutting dryer by screw conveyor. The dry the drilling cutting is, the better performance can reach by the cutting dryer.

After processed by vertical cutting dryer, the large solids are separated out, and sent to Cement Plant or brickyard or used for construction industry. The separated fluids are pumped by screw pump to a high speed centrifuge for further process. Finally the clean mud can be re-used for drilling rig or re-used to make new mud.

Following is the ways can reuse the drilling waste.

 l  Recycling Muds

l  Roadspreading

Continue reading “Drilling cuttings management system for sale”

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.

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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)

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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.

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GN solids control have VFD decanter centrifuge for sale. Welcome to inquiry us for drilling fluids decanter centrifuge GLW-V-355x1250N .

GN decanter centrifuge mainly used for drilling fluids processing, barite recovery, drilling waste treatment, mud weighted, etc projects. We also produce related equipments fitted for the centrifuge, to be assembly as a complete drilling mud processing system, including mud tank, mud agitator, mud mixer, shale shaker, etc.

Safety Device of GLW-V-355x1250N decanter centrifuge

1. Anti-overload

The device protects the Compensating gear from torque overload, which is installed in the outside end of the Compensating gear. The torque of gear is limited with a spring clutch by which power can be imputed. While overload cuts off spring clutch with driving shaft, the face of spring move the gland down to outside for 6mm and the stroke faucet switch on to switch off the power of main motor and fluid supply pump.

1. Electric interlock device (only dual motor driving system)



In the dual motor driving system without inverter speed-adjustable device, the correct program for starting a centrifuge is:

1)        Firstly start the auxiliary motor.

2)        After thirty second, the main motor allows to be started.

The correct program for stopping a centrifuge is as follow:

1)        Firstly stop the main motor.

2)        After ten minutes, the electric interlock device will automatically switch the power of the auxiliary motor.

With the electric interlock device, the correct program can be automatically carried out and unexpected result from wrong operation can be avoided.

GLW-V-355x1250N Advantages:

1. width rotary speed to satisfy technical requirement;
2. Smooth and silence when start;
3. Continue reading “VFD Decanter centrifuge for sale”