PERJANJIAN PENTING, KOMITMEN DAN KONTINJENSI lanjutan SIGNIFICANT AGREEMENTS, COMMITMENTS AND CONTINGENCIES continued

Indonesian language. PT ELNUSA Tbk DAN ANAK PERUSAHAAN CATATAN ATAS LAPORAN KEUANGAN KONSOLIDASI Enam Bulan Yang Berakhir Pada Tanggal-tanggal 30 Juni 2011 dan 2010 Disajikan dalam Jutaan Rupiah, Kecuali Dinyatakan Lain PT ELNUSA Tbk AND SUBSIDIARIES NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS Six Months Ended June 30, 2011 and 2010 Expressed in Millions of Rupiah, Unless Otherwise Stated 96

28. PERJANJIAN PENTING, KOMITMEN DAN KONTINJENSI lanjutan

28. SIGNIFICANT AGREEMENTS, COMMITMENTS AND CONTINGENCIES continued

Perusahaan Company Tanggal Perjanjian Date of Agreement Nilai Kontrak Contract Value Periode Kontrak Contract Period Jenis Pekerjaan Type of Work Lundin Rangkas BV, Belanda Netherlands 3 Mei 2010 May 3, 2010 AS6.077.117 US6,077,117 4 empat bulan 4 four months Jasa Akuisisi Data Seismik 2D 2D Seismic Data Acquisition Services Lapindo Brantas Ltd 12 September 2010 September 12, 2010 AS128.300 US128,300 4 empat bulan 4 four months 2D 3D TZ Pseudo Seismic Processing PSTM Murphy South Barito Ltd., Bahama Bahamas 5 Maret dan 31 Agustus 2010 March 5 and August 31, 2010 AS3.849.818 US3,849,818 6 enam bulan 6 six months Jasa Akuisisi Data Seismik 2D 2D Seismic Data Acquisition Services PT Medco EP Indonesia 15 Juni 2010 June 15, 2010 AS108.174 US108,174 1 satu tahun 1 one year Gravity Magnetic Survey Nico Resources 15 Desember 2010 December15, 2010 AS984.363 US984,363 15 lima belas bulan 15 fifteen months Ocean Current Measurement Services Orchard Energy West Belida Pte. Ltd., Singapura Singapore 29 Desember 2010 December 29, 2010 AS2.420.985 US2,420,985 6 enam bulan 6 six months Akuisisi Data Seismik 2D 2D Seismic Data Acquisition Pasir Petroleum Resources Ltd., British Virgin Islands 23 Juli 2010 July 23, 2010 AS2.369.302 US2,369,302 6 enam bulan 6 six months Jasa Akuisisi Data Seismik 2D 2D Seismic Data Acquisition Services Pilona Petro Tanjung Lontar, Ltd 25 Agustus 2010 August 25, 2010 AS802.875 US802.875 10 sepuluh bulan 10 ten months Pengadaan Jasa Wireline Logging Provision of Wireline Logging, Services Petrochina International Jabung Ltd., CinaChina 1 September 2009 September 1, 2009 AS4.989.800 US4,989,800 6 enam bulan 6 six months 3D Land Seismic Data Acquisition di Suko, Sumatera 3D Land Seismic Data Acquisition in Suko, Sumatera Ranhill Jambi Inc., Singapura Singapore 30 Januari 2009 January 30, 2009 AS5.450.560 US5,450,560 24 dua puluh empat bulan 24 twentyfour months Seismic Data Acquisition Services 2D Land di Jambi, Sumatera Seismic Data Acquisition Services 2D Land in Jambi, Sumatera Roda Drilling Nusantara 29 November 2010 November 29, 2010 AS600.000 US600,000 5 lima bulan 5 five months Penyediaan Jasa Cementing Sumur LHD - 73 Pertamina Geothermal Energy - Area Geothermal Lahedong Well Cementing Services LHD - 7 3 Pertamina Geothermal Energy - Geothermal Area Lahedong Indonesian language. PT ELNUSA Tbk DAN ANAK PERUSAHAAN CATATAN ATAS LAPORAN KEUANGAN KONSOLIDASI Enam Bulan Yang Berakhir Pada Tanggal-tanggal 30 Juni 2011 dan 2010 Disajikan dalam Jutaan Rupiah, Kecuali Dinyatakan Lain PT ELNUSA Tbk AND SUBSIDIARIES NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS Six Months Ended June 30, 2011 and 2010 Expressed in Millions of Rupiah, Unless Otherwise Stated 97

28. PERJANJIAN PENTING, KOMITMEN DAN