World's First 15.8-Ppg Geopolymer Cement-Free System: An Indonesia-Origin Innovation Using Local Materials for Low-Carbon Well Construction and CO2 Reduction
世界初の15.8-ppgジオポリマーセメントフリーシステム：インドネシア発の国産材料による低炭素坑井建設とCO2削減の革新 (AI 翻訳)
F. R Herqafsi, A. Afrianto, A. Wibowo, A. Putra, S. Fitryansyah, C. Wijaya
🤖 gxceed AI 要約
日本語
本論文は、インドネシアのPertamina Hulu Rokan（PHR）油田で、従来のClass Gセメントに代わるセメントフリーのジオポリマー障壁システムを開発・実証した。国産材料を99%使用し、現場試験で従来と同等の性能を確認。ライフサイクル分析では埋蔵CO2を83.5%削減し、単一ジョブで16.56トンのCO2排出を回避した。ロカン油田全体では年間最大28,900トンの削減が見込まれる。
English
This paper presents the development and field deployment of a cement-free geopolymer barrier system as a drop-in alternative to Class G cement in Indonesia's Pertamina Hulu Rokan field. Using 99% local materials, the system achieved comparable operational performance and an 83.5% reduction in embedded CO2, avoiding 16.56 tonnes per job. Extrapolated to Rokan operations, annual emissions could drop by up to 28,900 tonnes, supporting Indonesia's decarbonization goals.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の石油・ガス事業や坑井建設においても、セメント代替によるCO2削減は重要。本技術は国産材料活用とサプライチェーン強靭化の好事例であり、日本のSSBJ開示やカーボンニュートラル目標への貢献が期待される。
In the global GX context
This innovation offers a scalable low-carbon solution for oil and gas well construction, aligning with global decarbonization targets. It provides empirical evidence of geopolymer viability, relevant for ISSB-aligned disclosure and transition finance, and demonstrates how local materials can enhance supply-chain security while cutting emissions.
👥 読者別の含意
🔬研究者:Provides field-validated data on geopolymer cement replacement, useful for low-carbon construction research.
🏢実務担当者:Offers a proven alternative to Portland cement for well construction, reducing Scope 1 emissions and supporting sustainability targets.
🏛政策担当者:Highlights a concrete technology for reducing upstream emissions, relevant for national decarbonization policies.
📄 Abstract（原文）
Abstract Well construction is a major source of hard-to-abate emissions in the upstream sector, as primary and remedial cementing rely on high-emission Portland cement. Cement production releases roughly one metric ton of CO2 per ton due to limestone calcination and high-temperature processing. In Pertamina Hulu Rokan (PHR), annual cementing activities contribute more than 34,000 tonnes of CO2eq. To support Pertamina's 2060 net-zero mandate, a high-impact reduction opportunity was identified through low-carbon barrier technologies. This paper presents the multidisciplinary development, laboratory qualification, and field deployment of a novel cement-free geopolymer barrier system engineered as a drop-in alternative to conventional Class G cement under the tested field conditions. Unlike traditional systems, geopolymers generate mechanical integrity by eliminating the clinker step and its associated CO2 emissions. The designed geopolymer leveraged predominantly domestically sourced minerals, enabling favorable lifecycle energy and carbon intensity, supply-chain security, and broader sustainability impacts. A comprehensive laboratory testing program demonstrated that the geopolymer system offers stable rheology, flexible thickening time, minimal free fluid, and rapid strength development under a range of simulated surface-mixing and downhole conditions. These properties met or exceeded operational and integrity criteria for surface-casing applications at PHR. The field pilot—Indonesia's first use of cement-free geopolymer for well barrier and the world's first application of a 15.8-ppg geopolymer slurry with 99% local content—was successfully executed in the M-Field with unmodified existing rig equipment or procedures. Operational performance, evaluated via pressure testing and cement bond logs, confirmed placement quality, interfacial bonding, and zonal isolation comparable to Class G cement. Lifecycle analysis using the industry standard (IPCC 2021 CC-GWP100) showed an 83.5% embedded CO2 reduction versus Class G cement, avoiding 16.56 tonnes CO2 in a single job. Extrapolated across Rokan field operations, annual emissions could decrease by up to 28,900 tonnes without compromising reliability or well integrity. These results establish a technical foundation for scaling low-carbon geopolymer systems in mature basins and support Indonesia's broader decarbonization agenda in oil and gas operations.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.2118/233129-msfirst seen 2026-08-05 04:54:42
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