Designing multi-function rapid right angle set slurry compositions for a high pressure-high temperature well

Cementing in high-pressure-high-temperature (HPHT) wells presents challenges due to gas penetration into the cement, leading to low bonding quality and well isolation failures. This study aimed to design a novel multi-target cement formula to deter gas penetration and prevent complications such as f...

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Main Authors: Pooria Kianoush, Mostafa Gomar, Nasser Keshavarz Faraj Khah, Seyednooroldin Hosseini, Ali Kadkhodaie, Shahaab Varkouhi
Format: Article
Language:English
Published: Elsevier 2025-12-01
Series:Results in Earth Sciences
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Online Access:http://www.sciencedirect.com/science/article/pii/S2211714825000111
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author Pooria Kianoush
Mostafa Gomar
Nasser Keshavarz Faraj Khah
Seyednooroldin Hosseini
Ali Kadkhodaie
Shahaab Varkouhi
author_facet Pooria Kianoush
Mostafa Gomar
Nasser Keshavarz Faraj Khah
Seyednooroldin Hosseini
Ali Kadkhodaie
Shahaab Varkouhi
author_sort Pooria Kianoush
collection DOAJ
description Cementing in high-pressure-high-temperature (HPHT) wells presents challenges due to gas penetration into the cement, leading to low bonding quality and well isolation failures. This study aimed to design a novel multi-target cement formula to deter gas penetration and prevent complications such as formation creep and cement deterioration. A cement slurry was developed for two liner intervals in the first exploratory well in the Minoo field, SW Iran, at a depth of over 6000 m. The thermal gradient was 1.62 °F/100 ft, significantly impacting cement performance; elevated temperatures can accelerate hydration reactions, potentially causing strength retrogression. A blend of additives—including 3 % boric acid as a dual-functioning dispersant and 1 % latex materials—enhanced dispersing properties, compressive strength, and gas migration resistance. The designed slurry achieved an API fluid loss of 4.5 cc and 15 cc, transition times (30BC to 70BC) under 1 minute, with compressive strengths of 25.29 MPa and 35.44 MPa, respectively, compared to ordinary slurries that typically exhibited fluid losses greater than 50 cc and lower strengths. Gas migration resistance was analyzed through fluid migration tests, showing a 50 % reduction in permeability with silica nanoparticles. CBL/VDL logging data confirmed effective bonding and isolation in the wellbore. The innovative formulation enhances the mechanical properties of the cement—improving its durability and ensuring long-term stability in extreme conditions—while also addressing gas migration challenges. This study advances cement technology, enhancing the performance and reliability of cement-based materials in extreme environments through innovative methods, including using boric acid and latex materials in HPHT cement compositions.
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spelling doaj-art-e6c171789ecf4747ae1c01cca52ddd4c2025-02-09T05:00:05ZengElsevierResults in Earth Sciences2211-71482025-12-013100069Designing multi-function rapid right angle set slurry compositions for a high pressure-high temperature wellPooria Kianoush0Mostafa Gomar1Nasser Keshavarz Faraj Khah2Seyednooroldin Hosseini3Ali Kadkhodaie4Shahaab Varkouhi5Department of Petroleum and Mining Engineering, South Tehran Branch, Islamic Azad University, Tehran 1777613651, Iran; National Iranian Oil Company, Exploration Directorate (NIOC-EXP), Tehran 1994814695, Iran; Corresponding author at: Department of Petroleum and Mining Engineering, South Tehran Branch, Islamic Azad University, Tehran 1777613651, Iran.National Iranian Oil Company, Exploration Directorate (NIOC-EXP), Tehran 1994814695, Iran; Department of Geoscience and Petroleum, Norwegian University of Science and Technology, Trondheim, NorwayGeoscience Faculty, Research Institute of Petroleum Industry (RIPI), Tehran, IranDepartment of Petroleum Engineering, Omidiyeh Branch, Islamic Azad University, Omidiyeh, IranEarth Sciences Department, Faculty of Natural Sciences, University of Tabriz, Tabriz, IranDepartment of Earth Sciences, University College London, London WC1E 6BT, UKCementing in high-pressure-high-temperature (HPHT) wells presents challenges due to gas penetration into the cement, leading to low bonding quality and well isolation failures. This study aimed to design a novel multi-target cement formula to deter gas penetration and prevent complications such as formation creep and cement deterioration. A cement slurry was developed for two liner intervals in the first exploratory well in the Minoo field, SW Iran, at a depth of over 6000 m. The thermal gradient was 1.62 °F/100 ft, significantly impacting cement performance; elevated temperatures can accelerate hydration reactions, potentially causing strength retrogression. A blend of additives—including 3 % boric acid as a dual-functioning dispersant and 1 % latex materials—enhanced dispersing properties, compressive strength, and gas migration resistance. The designed slurry achieved an API fluid loss of 4.5 cc and 15 cc, transition times (30BC to 70BC) under 1 minute, with compressive strengths of 25.29 MPa and 35.44 MPa, respectively, compared to ordinary slurries that typically exhibited fluid losses greater than 50 cc and lower strengths. Gas migration resistance was analyzed through fluid migration tests, showing a 50 % reduction in permeability with silica nanoparticles. CBL/VDL logging data confirmed effective bonding and isolation in the wellbore. The innovative formulation enhances the mechanical properties of the cement—improving its durability and ensuring long-term stability in extreme conditions—while also addressing gas migration challenges. This study advances cement technology, enhancing the performance and reliability of cement-based materials in extreme environments through innovative methods, including using boric acid and latex materials in HPHT cement compositions.http://www.sciencedirect.com/science/article/pii/S2211714825000111HPHT wellCement slurryAnti-gas migrationThickening timeCompressive strengthBearden unit of consistency (BC)
spellingShingle Pooria Kianoush
Mostafa Gomar
Nasser Keshavarz Faraj Khah
Seyednooroldin Hosseini
Ali Kadkhodaie
Shahaab Varkouhi
Designing multi-function rapid right angle set slurry compositions for a high pressure-high temperature well
Results in Earth Sciences
HPHT well
Cement slurry
Anti-gas migration
Thickening time
Compressive strength
Bearden unit of consistency (BC)
title Designing multi-function rapid right angle set slurry compositions for a high pressure-high temperature well
title_full Designing multi-function rapid right angle set slurry compositions for a high pressure-high temperature well
title_fullStr Designing multi-function rapid right angle set slurry compositions for a high pressure-high temperature well
title_full_unstemmed Designing multi-function rapid right angle set slurry compositions for a high pressure-high temperature well
title_short Designing multi-function rapid right angle set slurry compositions for a high pressure-high temperature well
title_sort designing multi function rapid right angle set slurry compositions for a high pressure high temperature well
topic HPHT well
Cement slurry
Anti-gas migration
Thickening time
Compressive strength
Bearden unit of consistency (BC)
url http://www.sciencedirect.com/science/article/pii/S2211714825000111
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