Integrated Drilling Management: Jasa manajemen Drilling Rig: Jasa pelaksanaan aktivitas utama Drilling Supporting: Jasa pendukung kegiatan

99 Management discussion and analysis 2015 annual report PT Elnusa Tbk Company made a purchase of EWL Ofshore and HWU to improve the compeiive posiion of the company. drilling services The Company provides services in the ield of Drilling services and drilling support services where the current focus was on-shore drilling in accordance with the owned competence and equipment. At the same ime, the Company was sill exploring and developing the potenial in ofshore drilling and geothermal drilling, given the magnitude of the potenial for growth in the sector. Meanwhile, on services supporing drilling, the Company has eWL, MLu, CMT, h2s and others. Below is the explanaion of each business unit of drilling services:

1. integrated Drilling management: The management

service to integrate all drilling, through drilling rig and drilling supporing.

2. Drilling Rig

: Services on main drilling aciviies. 3. Drilling Supporing: The services supporing drilling aciviies, which include: - Mud Logging: The service to measure drilling parameters, including service to detect h2s content surrounding the well. - Mud engineering: service of providing material and mud. - Wireline Logging: service to comprehend the physical character of luids and rocks that contain oil and gas. - Cemening: Service in insulaing layers that selain itu perseroan melakukan pembelian eWL Ofshore dan hWu untuk meningkatkan posisi saing perusahaan. 2015 2014 Kapasitas Capacity utilitas Utility kapasitas Capacity utilitas Utility hydraulic Workover 10 unit hydraulic rig 75 11 unit hydraulic rig 60 Coiled Tubing 4 unit Coiled Tubing 69 3 unit Coiled Tubing 56 Cementing 3 unit Cementing unit 70 3 unit Cementing unit 70 slickline 7 unit portable slickline 92 7 unit portable slickline 83 LCT boat 1 unit LCT boat 90 1 unit LCT boat 100 Testing barge 3 unit Testing barge 81 3 unit Testing barge 100 surface Testing 3 unit surface Testing 71 3 unit surface Testing 27 drill stem 4 unit drill stem Testing 25 4 unit drill stem Testing 23 dua unit hydraulic rig dianggap sudah usang dan ada penambahan satu unit hydraulic rig baru Two unit of hydraulic rig were considered obselete and were replaced by one new hydraulic rig Jasa Pengeboran perseroan memberikan jasa layanan di bidang jasa pengeboran dan Jasa pendukung pengeboran di mana saat ini difokuskan pada jasa pengeboran di darat sesuai dengan kompetensi dan alat yang dimiliki, namun tetap melakukan penjajakan dan pengembangan potensi pada jasa pengeboran lepas pantai dan jasa pengeboran panas bumi mengingat masih besarnya potensi pertumbuhan pada sektor tersebut. sementara itu pada jasa pendukung pengeboran, perseroan memiliki jasa eWL, MLu, CMT, h2s dan lainnya. Persiapan dan mobilisasi Preparaion and Mobilizaion • peralatan pengeboran rig Drilling equipment • pengadaan casing oCTg Casing procurement oCTg • pengadaan aksesori pengeboran Drilling peripheral procurement • pengadaan material lumpur Mud chemical procurement • peralatan penunjang pengeboran Drilling support equipment MLu, eWL, CMT, WT operasi Pengeboran Drilling Operaion • Manajemen pengeboran Terintegrasi Integrated Drilling Management • pengeboran Drilling • pendukung pengeboran Drilling supporing: MLu, eWL, CMT, WT • pembongkaran rig Rig release • demobilisasi Demobilize • perpindahan antar well Rig movement Proses usaha Jasa Pengeboran business proCess in driLLing serViCes Persiapan lokasi Site Preparaion berikut ini adalah penjelasan masing-masing unit usaha dari jasa pengeboran :

1. Integrated Drilling Management: Jasa manajemen

untuk mengintegrasikan seluruh pelaksanaan pengeboran, melalui aktivitas pengeboran dan pendukung pengeboran.

2. Drilling Rig: Jasa pelaksanaan aktivitas utama

pengeboran.

3. Drilling Supporting: Jasa pendukung kegiatan

pengeboran yang meliputi: - Mud Logging: Jasa untuk mengetahui parameter pengeboran, termasuk jasa untuk mendeteksi kandungan h2s disekitar sumur. - Mud Engineering: Jasa untuk menyediakan material dan lumpur. - Wireline Logging: Jasa untuk mengetahui sifat fisika fluida dan batuan yang mengandung migas. - Cementing: Jasa untuk menyekat lapisan yang 100 analisis dan pembahasan Manajemen PT Elnusa Tbk Laporan Tahunan 2015 mengandung migas dengan lapisan lain yang mengandung formasi air. - Well Testing: Jasa untuk mengetahui jenis dan besar kandungan migas dalam lapisan batuan yang diuji. sebagian besar proyek pada segmen usaha ini merupakan proyek dengan kontrak jangka menengah dari tahun lalu dengan sebaran lokasi proyek terutama pada pulau sumatera, Jawa dan kalimantan. kontributor utama pendapatan berasal dari bisnis eWL dan drs. berikut kontrak utama yang diperoleh perseroan selama tahun 2015: no. Klien Client Tanggal Perjanjian Date of Agreement Periode Kontrak Contract Period Jenis Pekerjaan Type of Work Wilayah Kerja Working Area 1 pertamina 11 Januari January 2015 26 bulan months eWL kalimantan Timur east kalimantan 2 pertamina 01 Juli July 2015 14 bulan months eWL sumatera selatan south sumatera 3 Job pertamina petrochina east Java 18 Februari February 2015 06 bulan months eWL Jawa Timur east Java Kontribusi Pendapatan per bisnis – Jasa Pengeboran reVenue ConTribuTion per business – driLLing serViCes 2015 rp693,6 miliar rp693.6 billion 2014 rp963,5 miliar rp963.5 billion 35 2 4 59 drilling rig services Mud Logging h2s services drilling Fluid services eWL services 30 3 10 57 drilling rig services drilling Fluid services eWL services Mud Logging h2s services Tingkat uilisasi alat secara keseluruhan mengalami penurunan. penambahan dua unit Wireline Logging baru mulai bekerja pada pertengahan tahun 2014 dan awal tahun 2015. Sementara itu ingkat uilisasi peralatan Mud Logging dan h2s Removal yang rendah terkait kondisi peralatan yang sudah usang sementara pasar beralih ke peralatan dan teknologi baru. unit bisnis Business Unit 2015 2014 Kapasitas Capacity utilitas Utility kapasitas Capacity utilitas Utility Wireline Logging services 21 unit Wireline Logging 83 20 unit Wireline Logging 88 drilling rig services 3 unit drilling rig 73 2 unit drilling rig 83 Mud Logging services 9 unit Mud Logging 26 16 unit Mud Logging 28 h2s remover services 7 unit h2s remover 17 9 unit h2s remover 24 drilling Fluid services 1 Liquid Mud plant 1 Liquid Mud plant 100 Tujuh unit Mud Logging dan dua unit h2s remover sudah usang seven unit of Mud Logging and two unit of h2s remover were considered obsolete Jasa akuisisi dan Pengolahan Data seismik Layanan perseroan dalam kegiatan usaha ini merupakan satu-kesatuan yang terpadu dan terintegrasi dalam eksplorasi sumur-sumur migas yang mencakup semua tahap yang dibutuhkan dalam peneliian geoisika seismic. proses dimulai dari pengumpulan data dan survei lapangan, contain oil and gas with other layer containing water formaion. - Well Tesing: Service to idenify the type and size of oil and gas contents in rock layers being tested. Most projects in this business segment were under medium- term contract and their locaions were concentrated especially on the islands of sumatera, Java and kalimantan. The main contributors to the income derived from the business eWL and drs. These are main contracts with signiicant value obtained by the Company during 2015: Overall tool uilizaion rate had decreased. The addiion of two units of Wireline Logging had just started the operaion in the middle of 2014 and the beginning of the year 2015. Meanwhile, low Mud Logging equipment uilizaion rate and H2S Removal were related to the condiion of outdated equipment while the market was switching to new equipment and technology. Seismic Data Acquisiion and Processing services The company’s services in this business acivity are integrated with exploraion of oil and gas wells, which cover all steps needed in geophysical research seismic. The process begins from collecing data and ield surveys, processing data of the survey result, to data 101 Management discussion and analysis 2015 annual report PT Elnusa Tbk interpretaion for making further step in exploraion of oil and gas wells. however, the services are made to order, according to the needs of the company’s customers. Customers require subsurface geology data to determine the presence of oil and gas as well as the magnitude of oil and gas contained in the earth at the locaion where the companies operate. The work area of them may be both onshore and ofshore as well as in the transiion between land and coastal areas. Seismic Data Acquisiion and Processing Services are performed by the division of gsC, which include:

1. Geo Data acquisition land GDl: 2d 3d seismic data