A decade of self-sealing cement technology application to ensure long-term well integrity

Arash Shadravan, Mahmood Amani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Recent studies have shown that more than 50% of wells that are 15 years old or older have at least one casing string with sustained casing pressure. Cement sheath failure will result in sustained casing pressure, cross flow, lost production, collapsed casing, contaminated water zones and increased workover costs. Today, US federal regulation do not allow wells with sustained annular pressure to be plugged and abandoned. Remediation in these cases is both difficult and expensive. Therefore, utilizing a cement formulation which repairs itself in case of any failure under downhole conditions would be ideal for ensuring long-term well integrity and preventing the occurrence of sustained casing pressure. The objective of this paper is to review the self-sealing cement technology presented in the literature. This study manifests the latest novel laboratory equipment which allowed the cement to cure, get cracked and then seal under downhole conditions. The hydrophilic essence of this material provides a durable cement sheath to help ensure well integrity and zonal isolation for the life of the well. Mechanical properties testing could demonstrat the improved tensile to compressive strength ratio, lower Young's modules and higher Poisson's ratio. In addition, self sealing cement could self seal multiple times and therefore deliver a durable cement sheath in a wide variety of field cases.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - SPE Kuwait Oil and Gas Show and Conference
PublisherSociety of Petroleum Engineers
ISBN (Electronic)9781613994061
Publication statusPublished - 2015
Externally publishedYes
EventSPE Kuwait Oil and Gas Show and Conference - Mishref, Kuwait
Duration: 11 Oct 201514 Oct 2015

Other

OtherSPE Kuwait Oil and Gas Show and Conference
CountryKuwait
CityMishref
Period11/10/1514/10/15

Fingerprint

sealing
Cements
cement
Seals
Sealing (closing)
well
Poisson ratio
Remediation
compressive strength
Compressive strength
repair
mechanical property
remediation
Repair
Mechanical properties
Testing
cost
Costs
Water

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Cite this

Shadravan, A., & Amani, M. (2015). A decade of self-sealing cement technology application to ensure long-term well integrity. In Society of Petroleum Engineers - SPE Kuwait Oil and Gas Show and Conference Society of Petroleum Engineers.

A decade of self-sealing cement technology application to ensure long-term well integrity. / Shadravan, Arash; Amani, Mahmood.

Society of Petroleum Engineers - SPE Kuwait Oil and Gas Show and Conference. Society of Petroleum Engineers, 2015.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shadravan, A & Amani, M 2015, A decade of self-sealing cement technology application to ensure long-term well integrity. in Society of Petroleum Engineers - SPE Kuwait Oil and Gas Show and Conference. Society of Petroleum Engineers, SPE Kuwait Oil and Gas Show and Conference, Mishref, Kuwait, 11/10/15.
Shadravan A, Amani M. A decade of self-sealing cement technology application to ensure long-term well integrity. In Society of Petroleum Engineers - SPE Kuwait Oil and Gas Show and Conference. Society of Petroleum Engineers. 2015
Shadravan, Arash ; Amani, Mahmood. / A decade of self-sealing cement technology application to ensure long-term well integrity. Society of Petroleum Engineers - SPE Kuwait Oil and Gas Show and Conference. Society of Petroleum Engineers, 2015.
@inproceedings{b2e049f8cc9145d29b9d273915ea765c,
title = "A decade of self-sealing cement technology application to ensure long-term well integrity",
abstract = "Recent studies have shown that more than 50{\%} of wells that are 15 years old or older have at least one casing string with sustained casing pressure. Cement sheath failure will result in sustained casing pressure, cross flow, lost production, collapsed casing, contaminated water zones and increased workover costs. Today, US federal regulation do not allow wells with sustained annular pressure to be plugged and abandoned. Remediation in these cases is both difficult and expensive. Therefore, utilizing a cement formulation which repairs itself in case of any failure under downhole conditions would be ideal for ensuring long-term well integrity and preventing the occurrence of sustained casing pressure. The objective of this paper is to review the self-sealing cement technology presented in the literature. This study manifests the latest novel laboratory equipment which allowed the cement to cure, get cracked and then seal under downhole conditions. The hydrophilic essence of this material provides a durable cement sheath to help ensure well integrity and zonal isolation for the life of the well. Mechanical properties testing could demonstrat the improved tensile to compressive strength ratio, lower Young's modules and higher Poisson's ratio. In addition, self sealing cement could self seal multiple times and therefore deliver a durable cement sheath in a wide variety of field cases.",
author = "Arash Shadravan and Mahmood Amani",
year = "2015",
language = "English",
booktitle = "Society of Petroleum Engineers - SPE Kuwait Oil and Gas Show and Conference",
publisher = "Society of Petroleum Engineers",

}

TY - GEN

T1 - A decade of self-sealing cement technology application to ensure long-term well integrity

AU - Shadravan, Arash

AU - Amani, Mahmood

PY - 2015

Y1 - 2015

N2 - Recent studies have shown that more than 50% of wells that are 15 years old or older have at least one casing string with sustained casing pressure. Cement sheath failure will result in sustained casing pressure, cross flow, lost production, collapsed casing, contaminated water zones and increased workover costs. Today, US federal regulation do not allow wells with sustained annular pressure to be plugged and abandoned. Remediation in these cases is both difficult and expensive. Therefore, utilizing a cement formulation which repairs itself in case of any failure under downhole conditions would be ideal for ensuring long-term well integrity and preventing the occurrence of sustained casing pressure. The objective of this paper is to review the self-sealing cement technology presented in the literature. This study manifests the latest novel laboratory equipment which allowed the cement to cure, get cracked and then seal under downhole conditions. The hydrophilic essence of this material provides a durable cement sheath to help ensure well integrity and zonal isolation for the life of the well. Mechanical properties testing could demonstrat the improved tensile to compressive strength ratio, lower Young's modules and higher Poisson's ratio. In addition, self sealing cement could self seal multiple times and therefore deliver a durable cement sheath in a wide variety of field cases.

AB - Recent studies have shown that more than 50% of wells that are 15 years old or older have at least one casing string with sustained casing pressure. Cement sheath failure will result in sustained casing pressure, cross flow, lost production, collapsed casing, contaminated water zones and increased workover costs. Today, US federal regulation do not allow wells with sustained annular pressure to be plugged and abandoned. Remediation in these cases is both difficult and expensive. Therefore, utilizing a cement formulation which repairs itself in case of any failure under downhole conditions would be ideal for ensuring long-term well integrity and preventing the occurrence of sustained casing pressure. The objective of this paper is to review the self-sealing cement technology presented in the literature. This study manifests the latest novel laboratory equipment which allowed the cement to cure, get cracked and then seal under downhole conditions. The hydrophilic essence of this material provides a durable cement sheath to help ensure well integrity and zonal isolation for the life of the well. Mechanical properties testing could demonstrat the improved tensile to compressive strength ratio, lower Young's modules and higher Poisson's ratio. In addition, self sealing cement could self seal multiple times and therefore deliver a durable cement sheath in a wide variety of field cases.

UR - http://www.scopus.com/inward/record.url?scp=84959110740&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84959110740&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84959110740

BT - Society of Petroleum Engineers - SPE Kuwait Oil and Gas Show and Conference

PB - Society of Petroleum Engineers

ER -