An oil operator in Mexico was looking to stimulate production in an open hole section of a well that was not previously producing. Halliburton proposed using a self-positioning tool to perform selective acid stimulation across 14 clusters in the open hole section. This solution improved production, reducing treatment volumes by 63% and increasing oil production by 3,535 barrels per day for the operator.

1. © 2008 Halliburton
First Acid Stimulation with SPT
in Open Hole section improves
operator production in 27%
Location: Paraíso Offshore Region / Mexico
OPERATOR’S CHALLENGE
A major operator in offshore region was looking to perform an
acid stimulation in challenging conditions . One major targeted
area was the utilization of coiled tubing in order to place
accurately the treatment at JSK formation, in order to
overcome the high costs of treatment volumes compared to
bullheading option. The operator goal was to stimulate lower
sections of the open hole to increase production, the well has
no production at that time. The challenges associated for this
intervention are as follow:
• Pass BHA through small restrictions 2.562”
• Open Hole Section (477 m)
• Provide a divergence method for stimulation
• Overcome carbonate formation issues like low
porosity, low permeability, HP/HT
HALLIBURTON’S SOLUTION
Based on the results obtained from the analysis of the Sigma®
process, a selective acid stimulation using self position tool
(SPT) was recommended, solvents systems and both Acids
Gelled and organic (MOD PAD Gel and HTA 1210) as a
bundled solution; with the objective of stimulating and
connecting the best areas of natural fractures. In this well, SPT
was proposed to execute 14 clusters in order make selective
stimulation and increase effective stimulated contact zones
with the reservoir.
ECONOMIC VALUE CREATED
After intervention well has recovered production as follow:
• Reduction over 63% in volumes of treatment
• 14 intervals treated in 3 hr with CT
• 99.7% Oil and 0.3% water cut
• Increase in 3,535 bopd for the operator
Operation Graph after intervention (May 30th 2015)
Self Positioning Tool (SPT) – Stimulation Downhole Tools
www.halliburton.com
Self Positioning Tool (SPT)
Ixtal-83 Ixtal-B
Estimulacion Matricial x TF 1 ¾" + Htta SPT
30/05/2015
12:30 13:00 13:30 14:00 14:30 15:00
30/05/2015
15:30
Time
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
A
0
1
2
3
4
5
6
7
8
B
0
50
100
150
200
250
300
350
DPresion TF (psi) Gasto de Bombeo (bpm) Vol. Acumulado (bbl)A B D
3332
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
876543
1413121110987654321
Local Event Log
1 2 3
4 5 6
7 8 9
10 11 12
13 14
Intersection Intersection Intersection
Cluster 1 Cluster 2 Cluster 3
Cluster 4 Cluster 5 Cluster 6
Cluster 7 Cluster 8 Cluster 9
Cluster 10 Cluster 11 Cluster 12
Cluster 13 Cluster 14
13:00:20 13:16:54 13:29:23
13:40:05 13:47:17 13:58:08
14:07:47 14:20:08 14:32:04
14:43:04 14:56:05 15:07:28
15:16:50 15:27:09
PTF PTF PTF
333.0 3980 3207
1815 2194 1880
1545 1584 778.4
1848 1337 683.3
872.4 675.3
Cliente: PEMEX EXPLORACION Y PRODUCCION Fecha: 30-May-2015 Consecutivo: HS123/2015
Pozo: Ixtal-83 Intervalo: 4453 - 4930 md Ing. Op'n: (HS) Francisco Solano / German Tovar
Plataforma: Ixtal-B Rep. Cliente: Rafael Antonio Falconi Supervisor (HS) Daniel GomezOsorio
INSITEfor Stimulationv4.6.0
30-May-1517:12