Presentación Control-Inhinbicion Daño Formacion May 31-06

8/11/2019 Presentacin Control-Inhinbicion Dao Formacion May 31-06

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Production EnhancementFormation DamageControl & Inhibition


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Organic Deposits Managment

Paraffin Deposits: Precipitation out of waxycrudes when there is a sligh change inequilibrium conditions, causing loss of solubility.A lowering in temperature is the most commoncause.

Asphaltenes Deposits: Precipitation occurs whenthe crude loses it ability to keep asphaltensparticles dispersed. Ususally the occur at thebottom of the well adjacent to the producingformation wall.


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Visualization of paraffins deposition


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Organic Deposits Managment

Removal Aromatic and hydrocarbon based

fluids Paraffins in the wellbore,

feedlines, etc Asphaltenes sometimes inside

the formation Inhibition

Paraffins Inhibition: Materialswork by altering chemicalstructure of the paraffin crystals,difficulting them to adhere to

metal surfaces. Asphaltenes Inhibition: Materials

reduce or eliminate flocculationdownhole and allow them to flowback to surface.


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Paraffins Removal depending on melting point


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Follow up on paraffins & asphaltenes inhibition

Paraffins Cloud Point Pour Point Temperature

Asphaltenes SARA analysis & CII

CII = (Saturates+Asphaltenes)/(Resins+Aromatics)

API

Pressure Saturation pressure Refractive Index

Rioil=(S*1.4452+A*1.4982 +(R+As)*1.6624)*100(empirical equation after analyzing 67 oils byTianguang/Wang/Buckely)-New Mexico Tech

Delta Ri < 0.04 or 0.05, maybe problem oilsDelta Ri >0.06, stable asphaltenes

. .Re in os

Saturados Asfaltenos C I I

s as Aromtic


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10 September 2014

Scaling Innhibition


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What is Scale?Solid mineral deposit usually formed from producedsalt water. Scale occurs in primary production wells,Secondary wells, injection wells, disposal wells, andpipelines that connect wells to tank batteries.

Scale causes: Pressure changes Temperature changes Impurities Additives Variation of flow rates Mixing of incompatible waters


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Common OilField Scales


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Effect of temperature on solubility of CaCO 3 and CaSO 4


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How Scaling Inhibition works?

Chemical scale inhibitors control thedeposition of scale by either interacting withthe miscroscopic scale surface and altering

the crystal structure as it is forming or bysequestering the cations that precipitate asscale.


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Typical follow up after a scale inhibition treatment Control Residual LP-55 vs BOPD/BWPD

Pozo XXX Fecha Tratamiento ---------- -

0

300

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1200

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M a r c

h 1 5

, 2 0 0 0

M a y

1 5

, 2 0 0 0

J u

l y 1 5

, 2 0 0 0

A u g u s t

1 5

, 2 0 0 0

S e p

t e m

b e r

4 ,

2 0 0 0

S e p

t e m

b e r

4 ,

2 0 0 0

S e p

t e m

b e r

5 ,

2 0 0 0

S e p

t e m

b e r

5 ,

2 0 0 0

S e p

t e m

b e r

6 ,

2 0 0 0

S e p

t e m

b e r

2 0

, 2 0 0 0

O c

t o b e r

6 ,

2 0 0 0

N o v e m

b e r

3 ,

2 0 0 0

N o v e m

b e r

1 7

, 2 0 0 0

D e c e m

b e r

5 ,

2 0 0 1

D e c e m

b e r

2 8

, 2 0 0 0

J a n u a r y

1 6

, 2 0 0 1

F e

b r u a r y

8 ,

2 0 0 0

M a r c

h 1 5

, 2 0 0 1

Tiempo ( Fecha )

B O P D / B W P D ( b b l s

)

0

5

10

15

20

25

R e s

i d u a

l L P - 5

5 ( p p m

)

bopdbwpdppm LP-55

Salinidad & Retorno de calcio @ superficiePozo XXX

Fecha Tratamiento ----------

0

500

1000

1500

2000

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M a r c

h 1 5

, 2 0 0 0

J u n e

1 5

, 2 0 0 0

A u g u s

t 1 5

, 2 0 0 0

S e p

t e m

b e r

4 ,

2 0 0 0

S e p

t e m

b e r

5 ,

2 0 0 0

S e p

t e m

b e r

5 ,

2 0 0 0

S e p

t e m

b e r

2 0

, 2 0 0 0

O c

t o b e r

1 8

, 2 0 0 0

N o v e m

b e r

1 7

, 2 0 0 0

D e c e m

b e r

1 6

, 2 0 0 0

J a n u a r y

1 6

, 2 0 0 1

F e

b r u a r y

2 6

, 2 0 0 1

Tiempo ( Fecha )

C a

l c i o

& D u r e z a

C c

i c a

( p p m

)

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14000

16000

S a l

i n i d a

d ( p p m

C l o r u r o s

)

CalcioCaCO3

Cloruros ppm

Presentación Control-Inhinbicion Daño Formacion May 31-06

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