fishing options in horizontal wells

7/25/2019 Fishing Options in Horizontal Wells

1/16

Fishing Options in Horizontal

Wells

Bill Linn Weatherford International


2/16

Economics - When to Quit

Fishing? ! " #a$imum !a%s &o Fish ' " 'alue Of Fish

(s " (ost Of )idetrac*

Fd " Fishing dail% (ost

+d " +ig !ail% (ost

! " ,,,, ' (s,,, .//0/// 1//0/// Fd +d ./0/// 1/2///

! " ./ !a%s


3/16

Free-point and 3ipe +eco4er%

Free-point tool

5l6a%s chec* stretch and tor7ue - including

left hand tor7ue if 8ac*-off is an option2 Bac*-off 6ith )tring )hot

5t the second free connection if appropriate

to casing seat and 6ell 8ore geometr% and not

in a air drilled hole2


4/16


(hemical (utter3oor trac* record in attempting to cut greater

than /291/: 6all thic*ness2

;et (utter(an cut pipe in li7uid or dr% en4ironment2

!o not ha4e to appl% tor7ue to drill pipe2

!oes flare the O2!2 of the fish2


5/16


O6ens )plit )hot


6/16


)e4ering &ool

&his is not a fishing option2

If attempting to se4er drill pipe not drillcollars0 fire the se4ering tool in the tool

=oint2


7/16

Fishing Horizontal Wells

Hard Formations


8/16


Soft/Medium Formations


9/16

(atching a Fish in a Horizontal

Well Fishing Loose ;un* Bit (ones > etc2 (ore &%pe Bas*et

#agnet #ill

+e4erse (irculation Bas*et

Wash 3ipe 6 Finger Bas*et that 6ill allo6

%ou to rotate the drill pipe freel%2


10/16


Well )cre6ing into a pre4iousl% 8ac*ed offconnection

+un a slic* scre6-in assem8l% the sameO2!2 as the fish top2

5 s*irted scre6-in assem8l% ma*es the

scre6-in assem8l% trac* at a different le4elin the high angle hole2


11/16


Well &6ist-off O4ershot is the preferred tool2

)oft#edium Formation +un as small ano4ershot as 6ill ma*e the catch2

Hard Formation O4ershot selection ist%picall% no closer than @: of 8it size as6ould 8e the case in a 4ertical straighthole2


12/16

;arring Options and 3lacement

'ertical )traight Hole 3lace =arring assem8l% 6ithin t6o =oints of the stuc*

point if appropriate to casing seat and 6ell 8ore

geometr%2 (ur4e


13/16



14/16

;ar 3lacement and

ImpactImpulse (alculations 'ertical )traight Hole ;arring at A/0/// pounds o4er pull 6ith si$ 9 :

!rill (ollars 6 Oil and Intensifier ;ars placed C0///D

from the stuc* point generates an Impact of ..0.//pounds and an Impulse of C0.C2

Horizontal )traight Hole

;arring at G/0/// pounds o4er pull 6ith three =oints of

@: HW!3 6 Oil and Intensifier ;ars placed GCDfrom the stuc* point generates an Impact of .0G/9

pounds and an impulse of C0A92


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Fishing Tool B.H.A.


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Wash-o4er Operation in

Horizontal Wells

(ould ph%sicall% 8e done in short sections

in hard formation2

(ost Effecti4e 3ro8a8l%

fishing options in horizontal wells

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