RH Petrogas Limited（以下简称“公司”，连同其子公司统称“集团”）董事会谨此宣布，其持股82.65%的子公司Petrogas (Basin) Ltd.已于2025年11月21日在印度尼西亚西南部巴布亚省的Kepala Burung生产分成合同区（以下简称“分成合同”）开钻Karim-1勘探井。Karim

-1井位于Arar区块内勘探程度相对较低的陆上区域，距离集团现有的Arar生产集群以东约23公里。Karim-1井将使用集团自有钻机，以垂直井形式钻探，预计总深度约为4,300英尺（约1,311米）。钻井和完井预计耗时43天。

Karim-1井旨在评估位于先前Klaifi-1油田发现地层上倾构造圈闭内的中新世Kais储层的石油潜力，该油田位于Karim-1井西北约7公里处。中新世Kais组是一套碳酸盐岩层序，形成了一个广阔的浅海平台，其中包含局部礁体复合体，是该生产分成合同（PSC）的主要产油储层。Karim

-1井完井后，钻井平台将部署至西北Klagagi-1勘探井进行钻探，该井位于Arar生产集群东北约15公里处，距离Karim-1井场约12公里。 Karim-1井和西北Klagagi-1井是集团根据Kepala Burung PSC项目承诺进行的勘探井项目的一部分，该项目于2020年启动。

集团首席执行官兼执行董事Francis Chang先生评论道：“我们很高兴开始在Kepala Burung PSC项目中钻探这两口背靠背的勘探井。自2024年以来，我们一直在进行准备工作，包括获得必要的环境和林业许可证、采购和场地准备，以及升级钻机以提高其产能和可靠性。这两口井位于Arar区块东部一个偏远但前景广阔的区域，背靠背钻探将显著降低钻机调动和辅助物流成本。”

The Board of Directors of RH Petrogas Limited (the “Company”, and together with its subsidiaries, the “Group”) wishes to announce that its 82.65% owned subsidiary Petrogas (Basin) Ltd. has on 21 November 2025 spudded the Karim-1 exploration well in the Kepala Burung Production Sharing Contract (“PSC”), Southwest Papua, Indonesia.

The Karim-1 well is being drilled onshore in a relatively under-explored area within the Arar block and is situated approximately 23 km east of the Group’s existing Arar production cluster. Utilising the Group’s own rig, Karim-1 will be drilled as a vertical well to a proposed total depth of approximately 4,300 feet (approximately 1,311 m). Drilling and completion is estimated to take 43 days.

The Karim-1 well is designed to assess the oil potential of the Miocene Kais reservoir within a structural closure located updip of the previous Klaifi-1 oil discovery, situated approximately 7 km northwest of the Karim-1 well. The Miocene Kais formation is a carbonate sequence that forms a broad shallow marine platform with localised reefal complexes and is the main producing reservoir in the PSC.

Following the completion of the Karim-1 well, the drilling rig will be deployed to drill the Northwest Klagagi-1 exploration well, which is located approximately 15 km northeast of the Arar production cluster and about 12km from the Karim-1 well site. The Karim-1 well and the Northwest Klagagi-1 well are part of the Group’s exploration wells being drilled under the firm work commitment of the Kepala Burung PSC which commenced in 2020.

Mr. Francis Chang, Group CEO and Executive Director, commented, “We are excited to commence the drilling of our two back-to-back exploration wells in the Kepala Burung PSC. Preparations have been underway since 2024, including securing the requisite environmental and forestry permits, procurement and site preparation, and upgrading of the drilling rig to enhance its capacity and reliability. The two wells are located in a remote but prospective area in the eastern part of the Arar block, and drilling them back-to-back will significantly reduce rig mobilisation and ancillary logistics costs.”