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SOLID CONTROL EQUIPMENT --- MUD CLEANER/ DEGASSER/ CENTRIFUGE/
LINEAR MOTION SHALE SHAKER :
Item description:
A. HIGH SPEED LINEAR MOTION SHALE SHAKERS (LMSS) & LINEAR MOTION MUD
CLEANER (LMMC) PACKAGE.
HIGH SPEED LINEAR MOTION SHALE SHAKERS (LMSS) & LINEAR MOTION MUD
CLEANER (LMMC) PACKAGE. EACH SET CONSISTING OF 2 (TWO) UNITS OF LMSS,
1(ONE) UNIT OF LMMC & 1 (ONE) SUITABLE TWO WAY FLOW DIVIDER, with the
following specifications:
ITEM DESCRIPTION: HIGH SPEED LINEAR MOTION SHALE SHAKERS (LMSS) &
LINEAR MOTION MUD CLEANER (LMMC) PACKAGE.
Sl.
No
Specifications
SPECIFICATION FOR LINEAR MOTION SHALE SHAKER (LMSS)
1. APPLICATION: LMSS will be used as a solid control equipment to sieve off
larger cuttings / gumbo as well as fine particles from the drilling mud on
an oil well drilling rig operating continuously with the specified rated
conditions & parameters.
2 LMSS shall be suitable for operation in oilfield conditions having operating
fluid temperature up to 90 degree centigrade.

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3 Packages shall be suitable for onshore application & for use with all types
of water or oil based drilling fluids such as XC-Polymer-PAC; Resinex-
Sulphonate Asphalt Mud System, KCL-PHPA Polymer mud system, Low
solid non-dispersant mud system, etc.
4 Package shall be new, unused and free from all defects and of recent
manufacture
5 Type of LMSS: Single type; 2 (two) nos of single units placed side by side
or in tandem on a common rugged oilfield type skid.
6 Flow rate capacity: Each unit should be capable of handling minimum 500
GPM (1893 LPM) with 68 lbs/cu.ft. (1.09 Sp. Gr.) Water based mud at
Screen no API 170 as per API RP 13C. The combined fluid handling
capacity with twin shale shakers units operated simultaneously under
above condition should not be less than 1000 GPM (US).
7 Tentative mud properties to be able to handle by the LMSS:
Density of mud (Drilling fluid): 65 to 156 lbs /cu.ft. (1.04 to 2.5 sp.gr.)
Viscosity of mud (Drilling fluid): 35 - 70 centipoise.
8 Vibratory pattern: Linear Motion
9 Centrifugal `G' force: 7 G or higher
10 Number of deck per unit: Single.
a Deck angle adjustment range: ( -)3 degree to (+)3 degree downhill and
uphill respectively or as per the design of the manufacturer.
b Deck angle adjustment type: Manual with locking arrangement to
maintain desired angle.
c Screen tensioning: Through quick release device - Positive Lock/Wedge
system.
d Screen mounting / support: Over slung design.
e Screen type & construction: Refer clause 1.7 below for screen system
f Flow line Connections: 25.4 mm (10") OD. Raised face flange type

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g Electrical features: Explosion proof AC motor & starter suitable for 3
phase, 3-wire (no neutral), power Supply 415 Volts AC, 50 Hz. Vibratory
drive : Direct electric motor driven with eccentric weights
h Safety Guards : On all rotating / moving parts & assemblies
11 SPECIFICATION FOR VIBRATORY DRIVE SYSTEM
a Vibratory assembly shall be easily detachable from the unit for simple &
quick field replacement.
b LMSS shall incorporate two integral vibrator motors with eccentric
counterweights for attaining required `G' force & delivering high - speed
centrifugal force to the screen frame.
c Motion of particle shall be such that the screen angle is adjusted to a
positive angle (uphill) for obtaining drier particles & reducing fluid losses.
d Locking mechanism / arrangement shall be provided for maintaining
desired screen angle.
e Vibratory drive shall be incorporated with self - contained lubrication
system for lubrication of essential parts including integral vibrator
bearings.
f Vibratory shaft shall be integral without any joint & provided with
independent safety guard.
g No separate pump should be used for any lubrication.
12 SPECIFICATION FOR BASKET SYSTEM
a LMSS shall comprise of suitable deck as per manufacturer's design to
meet the flow rate requirement as indicated in technical specification &
features.
b For variable screen angle adjustment: - Deck shall incorporate
variable deck angle adjustment during drilling operation either with
synchronized jack system or independent jack system. Suitable provision
shall be provided for avoiding by-pass of drilling fluid. Movable bracket

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shall be provided with locking arrangement to avoid side jerking.
c Deck shall be supported / mounted by vibration isolation members (Made
up of natural rubber / rubber compound / coil spring isolators) connected
to the bed for eliminating excessive vibration to avoid structural member
breakage.
13 SPECIFICATION FOR SCREEN SYSTEM
a Screen shall be easily replaceable type & designed to provide highest fluid
throughout (Conductance) & dryness of drilled solid with maximum
screen life.
b LMSS should efficiently operate with up to API 325 Screen [As per API RP
13C] sizes & interchangeable to meet varied flow rate conditions (GPM).
Screen openings in terms of mesh & microns with required mud handling
capacity against different hole section are given below:
c Screen shall be easily repairable through flexible polyurethane plugs.
14 SCREEN TENSIONING SYSTEM shall be simple in design allowing quick
engagement / dis-engagement of screens.

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All screens shall be indelibly stamped /engraved with mesh count, wire
diameter & manufacturer name as per API RP 13C designation.
Mud Parameters For 17.1/2" Hole For 12.1/4"
Hole
For 8.1/2"
Hole
Density 68 lbs/ cft (1.09
Sp.gr.)
70-80 lbs/cft
(1.12-1.28
Sp.gr.)
80-100 lbs/cft
(1.28-1.6
Sp.gr.)
PV 8-15 cp 10-20 cp 12-30 cp
YP 15-30
lbs/100sq.ft.
15-25
lbs/100sq.ft.
12-25
lbs/100sq.ft
ROP (max.) 120 m/hr 120 m/hr 50 m/hr
Formation Alluvium /
Pebble/ Clay
Sand / Sand
Stone / shale /
Mud Stone /
Coal.
Sand / Sand
Stone / shale /
Mud Stone.
Minimum
Processing rate
with one unit of
LMSS
using API 50
screens 500
GPM (US)
using API 80
screens 450
GPM (US)
Using API 140
screens - 350
GPM (US)
Minimum
Processing rate
with two units of
LMSS
using API 50
screens 1000
GPM (US)
Using API 80
screens- 900
GPM (US)
Using API 140
screens - 700
GPM (US)
15 Deck screen system shall be suitable for the installation of Pyramid /
corrugated / pre-tension screen.
16 Screen shall be easily repairable through flexible polyurethane plugs.
17 SCREEN TENSIONING SYSTEM shall be simple in design allowing quick
engagement / dis-engagement of screens
a All screens shall be indelibly stamped /engraved with mesh count, wire
diameter & manufacturer name as per API RP 13C designation.
18 SUPPLY & DISCHARGE LINES

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a Flow line: - Flow line pipe shall be 10 inch diameter raised face flange
suitable for two-way flow diverter.
b Fluid discharge :- (Underflow) shall be made from both sides & discharge
directly into the sand traps or bypass directly into degasser / mud cleaner
pit.
c Special arrangement shall be made to throw the cutting a little away from
the unit by providing a plate just below the screen outlet.
16 ELECTRICAL FEATURES
a Vibratory drive system of LMSS should be powered by explosion-proof,
pre-wired & suitably matched motor.
b Motor shall be explosion proof, Induction type, Squirrel cage, with sealed
bearings & suitable for 415 V AC, 50 Hz, 3 - phase power supply at 40
degree centigrade ambient & 90% relative humidity. Motor should not be
loaded above 90% of its continuous rating when the unit is running at its
maximum output. Motor shall be temperature class T3.
c Motor shall be operated through separate suitable rating, manual,
explosion proof, flame proof, water & weather proof starter fixed to the
unit with two positioned push button switch (ON / OFF & O/L RESET).
d Motor installation: Motor shall be suitably located on LMSS & starter
installed in a water & weatherproof box to avoid mud splashes. Motor
foundation bolts shall be of such designed & made up of material to avoid
shearing off / breakage during normal operation.
e Explosion proof motor & starter should be provided with suitable FLP
double compression cable glands.
f Vibrator maintenance schedule (both routine & overhauling) and
procedure is to be submitted with bid:
g Vibrator routine maintenance such as bearing greasing (if required at all)
should be simple (through easily accessible external grease nipple) and
should not require removal / adjustment of counterweights and / or any
similar extensive procedure.

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h It must be possible to carry out such routine maintenance at site by non-
OEM personnel. It must be confirmed in routine maintenance schedule
and procedure to be submitted by the bidder along with Techno-
Commercial Unpriced bid .
i Bidder should clearly indicate vibrator overhauling schedule, procedure,
tools, consumables, expertise & infrastructure requirement. Bidder to
indicate what support service can be provided from their end.
j Bidder to mention vibration level `G' at base of vibrators / vibrator
mounting plate and specify if it is same as that of screen.
k Bidder to indicate rating of high pressure jet cleaner and to indicate
power supply requirement (in case electric driven jet cleaner HP, Volts etc
and for pneumatic, minimum supply air pressure requirement).
17 MOUNTING SKID
a Both LMSS together with associated accessories shall be mounted on a
single heavy duty, rigid steel oilfield type skid for placement over the mud
tank.
b Unit shall be equipped with four lifting points looking the C.G. of unit and
located at each corner of the base frame.
c The dimensions (L x W) of skid for proper installation of the units should
not exceed the following:-
Length = 3980 mm Measured perpendicular to the direction of mud flow
over the screens.
Width = 2434 mm (minimum) Measured along the direction of mud flow
over the screens.
d The units of LMSS should not be permanently fixed but should be
detachable for transportation purpose. The process of assembling &
disassembling of LMSS units on to the skid should be simple & should not
consume much time. Accordingly the combined / coupled overall
dimensions (L x W) of two units of LMSS should not exceed Length 5334

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mm x Width 2930 mm and Height 1768 mm.
e PAINTING
The complete LMSS units & skid should be grit / sand blasted to bare
white metal, covered with 2-5 mils coat of zinc rich epoxy primer
containing anti-corrosive pigments. Intermediate coat of epoxy polyamide
primer & aliphatic acrylic polyurethane top 3-4 mils coat to withstand
tropical conditions.
18 MATERIAL
a All components of wetted area including basket shall be made up of
stainless steel 304 or higher grade steel.
b Vibration isolators : Neoprene / Rubber compound / coil spring
c Skid : Structural Carbon steel
d Cross & side support assembly: Fibre glass / Polyurethane / stainless steel
e O-rings : Teflon
f Guard : Non-Sparking material
19 SPECIFICATION FOR LINEAR MOTION MUD CLEANER (LMMC)
a Linear motion mud cleaner (LMMC) is intended to be used as solid control
equipment in oil well drilling operation for removal of fine solids or silt
from the drilling mud. LMMC shall use two stage mechanical processes for
solid control. First stage shall remove fine solids through DESANDER &
DESILTER (Hydro cyclones) & in the second stage the under flow from De-
sander and De-silter shall discharge on fine mesh screens of linear motion
vibrating shale shaker. The unit shall work on LINEAR MOTION principle
operating continuously, at specified rated conditions.
b The LMMC shall be shipped under assembled and in ready to start

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condition.
c The unit should have a combination of 2 nos. of 12 inch Hydro-cyclone as
De-sander each having capacity of minimum 500 GPM (US) & maximum of
4 inch 20 nos. of hydro cyclones as Desilter arranged either in twin parallel
rows of 10 cones each or in circular design. Both De-sander & Desilter
shall be capable of handling a minimum of 1000 GPM (US). (No. of Desilter
hydro-cyclone may vary as per the design of the manufacture but total
capacity must not be less than 1000 GPM (US).
d Under flow from De-sander & Desilter shall discharge on fine mesh
screens of linear motion vibrating shale shaker with fine mesh screen that
works on linear motion principle.
e The LMMC assembly shall be mounted on standard rugged oil field type
skid suitable for easy movement and installation unit shall be equipped
with four lifting points located at each corner of the case frame. Unit shall
have gates at each side for direct discharge in to mud tank.
f LMMC shall be incorporated with integral vibrator motor(s) for imparting
energy to the shaker basket (to provide linear motion). Vibratory system
shall be directly coupled to self- contained lubricating system suitably
matched with the specified operating conditions located on shaker skid to
avoid being damaged by spilling mud. Motor shall be designed for 415V,
50Hz, 3 –PHASE & CLASS-F insulation for top terminal box, sealed and pre-
greased bearings designed for continuous service.
g The electrical features for motor & starter should be same as indicated
against clause 1.9 (i.e. for LMSS).

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FACT SHEET
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h LMMC assembly shall be complete with Pressure gauge in both De-sander
& Desilter feed line (feed gauge to read feed pressure of various mud
weights), Feed and over flow headers, Victaulic clamps/couplings over
flow header vent, Rubber bushing shall all be included and mounted on
the LMMC skid. The offered LMMC should be complete with screens API
200 or nearby fitted on each unit.
i Any other item i.e. not mentioned here but is normally supplied with the
standard package, should be indicated in the Techno-Commercial
Unpriced bid & to be supplied along with equipment.
j Shaker of LMMC should work on Linear Motion Principle with manually
adjustable deck angle setting ranging between ( -)3 degree to (+)3 degree
downhill and uphill respectively or as per design of the manufacturer
k Rated capacity should not be less than 1000 GPM (US) and should be
suitable for separating cuttings from the mud of specific gravity 1.05 to
2.50 and viscosity 40 to 70 cps.
l LMMC should be suitable for all types of mud including weighted or non
weighted oil based or water based or PHPA
m Centrifugal 'G' force - 7.0 or higher
n Minimum operating pressure should be 2.25 kg/sq.cm. (32 PSI) with mud
specific gravity of 1.05 & maximum operating pressure of 5.5 kg/sq.cm.
(78 PSI) with mud specific gravity of 2.50.
o Micron cut of De-sander cones should be of 74-40 microns. De-sander
Hydro-cyclones should be 12 inch size made of polyurethane material,
ceramic insert molded to withstand high abrasion, temperature and
pressure. Cones should be slant mounted, light weighted and having high
abrasion resistance with robust support. The discharge apex of the cone
should be of easily removable type for clearing and replacement. Blanking
facilities or butterfly valves should be provided with the cones for
isolation of the cones.

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p Feed line should have such a design to provide adequate pressure to each
cone.
q The De-sander feed manifold shall preferably be of 8-inch. (203.2-mm) in
diameter and Discharge manifold shall preferably be of 10-inch (254-mm)
in diameter. Header line to the cone should be provided with Victaulic
Couplings on weld nipple. The De-sander should includes a solids
discharge trough to distribute the hydro-clone underflow evenly onto the
screening surface.
r The Desilter feed manifold shall preferably be of 6-inch. (152.4-mm) in
diameter and Discharge manifold shall preferably be of 8-inch (203.2-mm)
in diameter. Header line to the cone should be provided with Victaulic
Couplings on weld nipple. A discharge trough to distribute the hydro-
cyclone underflow evenly onto the screening surface should be provided.
s Pressure gauge of suitable size and rating (minimum 100 PSI) should be
provided on inlet line of De-sander & Desilter.
t LMMC should be suitable for continuous operations in oil field condition
having operating fluid (MUD) temperature up to 90 degree centigrade.
u LMMC should operate efficiently with screen of API 100 to 325 mesh size.
Screen should be designed to provide highest throughput (conductance)
and dryness of drilled particles with maximum screen life.
v Safety guards should be fitted to all rotating / moving parts or assemblies
(non- sparking material)
x Easily accessible grease Fittings to be provided.
t The equipment should be designed for minimum maintenance
z The complete LMMC units & skid should be grit / sand blasted to bare
white metal, covered with 2-5 mils coat of zinc rich epoxy primer
containing anti-corrosive pigments. Intermediate coat of epoxy polyamide
primer & aliphatic acrylic polyurethane top 3-4 mils coat to withstand
tropical conditions.

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aa All connections should be leak proof.
bb LMMC together with skid should not exceed the following overall
dimension:
Length = 2000 mm (minimum) to 2500 mm (maximum) - Measured
perpendicular to the direction of mud flow over the screens.
Width = 2800 (minimum) to 3250 mm (maximum) - Measured along the
direction of mud flow over the screens.
Height = 2200 mm (minimum) to 2770 (maximum) with Desilter mounted
cc Screen should be of standard size as per API RP 13C.
dd Screen mounting and tensioning system should be simple in design
allowing quick and easy engagement / disengagement of screen. The
screen mounting mechanism should ensure trouble free long life of the
screen.
ee Provision should be made for collection of discharge (coming out from
hydro cyclone) either over linear motion shaker of LMMC or directly to
discharge pit.
ff Units shall be suitable for onshore application & for use with all types of
water or oil based drilling fluids such as XC-Polymer-PAC; Resinex-
Sulphonate Asphalt Mud System, KCL-PHPA Polymer mud system, Low
solid non-dispersant mud system, etc.
gg Unit shall be new, unused and free from all defects and of recent
manufacture.
hh Unit shall be supplied fitted with the screens, complete in all respect &
should be in ready to use condition.
20 TWO WAY FLOW DIVIDER FOR LINEAR MOTION SHALE SHAKERS
a The two way flow diverter should have 10 inch diameter raised face flange
suitable for connection to twin shale shaker unit. The inlet of flow divider

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should be suitably designed having at least 12 inch diameter raised face
flange complete with blind flange (for OIL's open mud channel). The two
way flow divider should have non-adjustable sliding type gates for
diverting the inlet to either of the LMSS units or to the mud tank through
a suitably 10 inch diameter raised face flange by-pass. The divider should
be provided with a by-pass opening. The by-pass opening of the divider
should be covered with blind flange.
b The flow divider should meet the followings:
Material: Structural Carbon Steel.
Painting: Same as indicated in clause 1.11 above.
c Three-way design flow divider from the bidder is also acceptable subject
to all other specifications remaining the same.
d An alternate design of “POSSUM BELLY” by any manufacturer substituting
Flow divider is also acceptable subject to all other specifications remaining
the same.
e The dimensions of mud tanks over which Twin Skid mounted unit of
LMSSs & unit of LMMC need to be installed is 9900 mm (Length) x
2285mm (Breadth) x 2550 mm (Height).
Vibrator current at 415V, 50 Hz.
b) Vibration level at screen, at base of vibrator & starter.
Any Query Please Contact: indeg@oilindia.in