lesson 4.ppt

7/25/2019 Lesson 4.Ppt

1/23

MUD SYSTEM


2/23

MUD SYSTEM

mud system acts as the circulatory

system of the rig. The drilling mud

provides lubrication and cooling to the

drill bit. The fluid then carries the drill

cuttings back to the surface. At the

surface the mud is cleaned and returneddo!n the drill string in a circulating flo!

during the drilling.


3/23

MUD SYSTEM COMPONENTS

"entrifugal pump Shale shaker

Desilter

Desander

Mud agitator

Standpipe manifold

#otary hose


4/23

CENTRIFUGAL PUMP


5/23

Centrifugal pump functin T!e mu" pump i# a reciprcal pump$ %!ic!

mean# a pi#tn m&e# up an" "%n in a

c'lin"er t frce ut flui"( U#ing a #'#tem

f &al&e#$ pi#tn# an" liner#$ t!e mu" pump

circulate# flui" "%n int t!e !le t cl

t!e "rilling part#(


6/23

)#t STAGE OF CLEANING S!ale #!a*er# are t!e fir#t #tatin in t!e

#li" cntrl #'#tem( S!a*er# can +e

elliptical$ linear mtin r a !'+ri"(


7/23

S,ALE S,A-ER


8/23

Shale Shakers$ T!e "u+le."ec*er

#!ale #!a*er !a# t% #creen# munte"

n a flat.+e" cn#tructin( T!e #creen#

can range "%n t )// me#! %it! t!e

me#! cr## #ectin &ar'ing frm #0uare

t an e1aggerate" rectangle( Drille"

#li"# "%n t )22 micrn# are rem&e"

+' 3/.me#! #creen#$ an" 34/.micrn

#i5e particle# +' 6/.me#! #creen#(

Shale Shaker


9/23

S!ale #!a*er functin T!e #!ale #!a*er rem&e# rc* cutting# an"

t!er #li" material# frm t!e "rilling mu"

# t!at it can +e #afel' reu#e" &er an"

&er again( S!ale #!a*er# !elp t *eep t!e

"rilling mu" free f nt nl' #li"#$ +ut

al# un%ante" ga#e# an" t!ercntaminant#(


10/23

,O7 S,ALE S,A-ER 7OR-S8

The shale shakers consist of a vibratingtray lined !ith a !ire mesh screen.

#ocks and other solid materials remain

on top of the screen !hile li%uid passes

through. The vibrating action of the

screen helps to facilitate this process.


11/23

S,ALE S,A-ER SCREEN


12/23

Mud "leaner$ T!e mu" cleaner i# "e#igne" fr

interme"iate mu" %eig!t range# f ))(/ t )4(/

ppg( It cn#i#t# f an eig!t.cne "e#ilter +an*

munte" &er a #mall !ig!.#pee" #!a*er( T!e mu"

cleaner cm+ine# t!e a"&antage# f #li"#

#eparatin +' mean# f centrifugal frce an"

#li"# rem&al +' #creening(

T!e #creen #i5e# &ar'$ +ut t!e #i5e m#t cmmnl'

u#e" i# 6// me#!$ %!ic! can rem&e fine# "%n

t 29 micrn# in #i5e( It i# impractical t u#e

#creen #i5e# muc! +el% 6// me#! +ecau#e f

e1ce##i&e l## f +arite &er t!e #!a*er #creen(

Mud Cleaner


13/23

"entrifuge$ In %eig!te" mu" #'#tem# it i# ften "e#ira+le t re"uce mu" maintenance c#t# +'

met!"# t!er t!an "ilutin( Since it i# nt practical t u#e "e#ilting e0uipment in t!e#e #'#tem#$ a

centrifuge i# ften u#e"(

Mu" centrifuge# %r* n t!e "ecanting principle( T!e mu" fl% enter# a c!am+er rtating at a

!ig! #pee"$ an" centrifugal frce #eparate# t!e mu" #tream int t!ree cmpnent#: flui" p!a#e$

l%.#pecific.gra&it' #li"#$ an" !ig!.#pecific.gra&it' #li"#( Fll%ing #eparatin f t!e l%.

gra&it' #li"#$ t!e !ig!.gra&it' #li"# are returne" t t!e acti&e mu" #'#tem(

In un%eig!te" mu" #'#tem#$ a !ig!.&lume "ecanting centrifuge rem&e# l%.#pecific.gra&it'

"rille" #li"# m#t efficientl' an" ecnmicall'( T!e centrifuge can +e perate" n un%eig!te"

mu"# at #pee"# up t 66// t 64// rpm$ creating centrifugal frce# greater t!an )9// G.frce( T!e

!ig!.&lume centrifuge can rem&e fine #li"# "%n t t% micrn# ;e(g($ +entnite an" cla'#< (

Centrifuge


14/23

T'pe# f Cau#e#=a#ic Cau#e#

Pr Management Safet' Plic' > Deci#in#

Per#nal Factr#?En&irnmental Factr#

Un#afe Act

PerfrmanceCn"itin#

Unplanne" relea#e f energ'

;Direct Cau#e

lesson 4.ppt

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