20230712_ELSA_Laporan Informasi dan Fakta Material_31340821_lamp1.pdf

Narahubung:
Jayanty Oktavia Maulina (Anty)
Manager of Corporate Communications
Graha Elnusa 16th Floor, Jl. TB Simatupang Kav. 1B, Jakarta 12560
Tel: (021) 7883 0850 | Fax: (021) 7883 0907 | Mob: +62813 1787 1717
E-mail: jayanty.maulina@elnusa.co.id


Press Release
        Elnusa's Contribution to the Mudi-27
    Development Well Was Completed Faster Than
                     The Target
Jakarta, 10 July 2023 - PT Elnusa Tbk (Elnusa), a leading energy services company incorporated in Pertamina's Upstream
Subholding, contributed to the successful drilling of the Mudi-27 development well, which was completed faster than the set
target. Previously, the Mudi-27 development well located in Tuban Regency, East Java, was successfully completed 230 hours
or about 9.5 days faster by Pertamina Hulu Energi Tuban East Java (PHE TEJ) which is part of Pertamina's Zone 11 Regional 4
Subholding Upstream.

"We are grateful that the Elnusa team can contribute to accelerating the drilling time of the Mudi-27 development well so
that it can help Pertamina's Zone 11 Regional 4 Upstream Subholding in achieving its drilling KPI. The drilling plan is targeted
for 45 days, then it can be completed in less than 36 days," said Elnusa Director of Operations Charles Harianto Lumbantobing.

There are two main works that Elnusa is working on on the Mudi-27 PHE TEJ Project, namely Drilling Fluid Services (DFS) and
H2S Monitoring. DFS or drilling mud services is quite important in a drilling activity, where mud is like mandatory blood in a
drilling process. Charles said that the very crucial DFS work could be handled well by the Elnusa team. "During the drilling of
the Mudi-27 well there were no significant obstacles during the drilling process so that it ran smoothly and according to the
program and expectations. This condition was supported by the performance of Elnusa's DFS work which was quite well
performed there," he said.

Meanwhile for H2S Monitoring work, Elnusa has been competent there since 2006. For typical wells in the East Java area it
is known to have a fairly high content of the hazardous gas H2S/Hydrogen Sulfide so it is very important to monitor H2S
during the drilling process, completion, and even during drilling. during production. Charles also revealed that Elnusa as a
whole managed to record zero accidents in this Mudi-27 Project.

Elnusa is quite experienced in the East Java area by working on many wells, starting from Kedung Tuban, Kawengan, Sukawati,
to the Kolibri exploration well. For Mudi itself, 27 wells have been drilled and Elnusa has been involved by PHE TEJ since 2018.
From this experience the Elnusa team has understood that the well treatment for each well there is different from one
another.

Apart from DFS and H2S Monitoring work, Elnusa also exists to provide other services at Mudi wells, such as Mud Logging
Services, Wireline Services, Slickline Services, to Well Testing. "As a subsidiary of Pertamina's Upstream Subholding, Elnusa
hopes that more activities from PHE Tuban East Java will involve Elnusa. Not only services related to drilling mud and H2S,
because Elnusa still has many other services that might be able to support various operational activities there," said Charles.