Menu
Search
Filters
Close
Menu

Save 20% on select titles with code HIDDEN24 - Shop The Sale Now

51316-7115-Risk Assessment And Downhole Chemical Treatment Program For Production Wells Within The Wafra Field

Picture for Risk Assessment And Downhole Chemical Treatment Program For Production Wells Within The Wafra Field
Available for download

Chemical treatment of reservoir fluids within the wellbore is essential for the control of associated corrosion and scale deposition. The Wafra Risk Assessment was developed with the Likelihood of Failure (LoF) based on historical corrosion well workover failures and the Consequence of Failure (CoF) directly tied to oil daily oil production.

Product Number: 51316-7115-SG
ISBN: 7115 2016 CP
Author: Tariq Kamshad
Publication Date: 2016
Industries: Chemical Inhibitors , Oil and Gas Production
$0.00
$20.00
$20.00

The chemical treatment of reservoir fluids within the wellbore is essential for the control of associated corrosion and scale deposition issues that adversely affect the integrity of the downhole pumping systems as well as casings and production tubing strings. Scale deposition and/or corrosion within downhole pumps and production tubing strings can lead to major losses in production and costly workovers which adversely affects operational economics. Therefore immediate attention was required for the development of a practical field based risk assessment protocol for the design and application of the appropriate chemical treatment and monitoring programs to achieve mitigation of inherent scaling and corrosion issues.Joint Operation’s wafra field producing wells tubing/casing materials made of L-80 carbon steel. Due to the aggressive nature of the high H2S and carbonate salinity brine the workover rate on downhole pump and tubing failures were too frequent. The Wafra risk assessment was developed with the likelihood of failure (LoF) based on historical corrosion/scale well workover failures and the consequence (CoF) of failure directly tied to oil daily oil production. Therefore selection of the higher risk wells (Risk = LoF x CoF) became a direct relationship between the wells with the higher workover failure rates (associated with corrosion and scaling issues) and higher oil producing wells.Further selection and baseline monitoring considerations were also given to dissolved Iron & Manganese concentrations within the individual production well water samples utilizing the COPRA corrosion modelling techniques for sour brines. Chemical treatment and monitoring programs were then designed with consideration given to downhole pumping systems (SRP PCP and ESP) vs. effective chemical treatment and delivery system economics. Selection and design of chemical programs included a step-wise implementation to ensure the effective level of treatment was being accomplished for ensuring the dependability and integrity of the wells as well as the downstream gathering system and facilities.

Key words: Downloadable, Risk Assessment, Corrosion, Scale, Workover, Failures, Production, CoF, LoF

The chemical treatment of reservoir fluids within the wellbore is essential for the control of associated corrosion and scale deposition issues that adversely affect the integrity of the downhole pumping systems as well as casings and production tubing strings. Scale deposition and/or corrosion within downhole pumps and production tubing strings can lead to major losses in production and costly workovers which adversely affects operational economics. Therefore immediate attention was required for the development of a practical field based risk assessment protocol for the design and application of the appropriate chemical treatment and monitoring programs to achieve mitigation of inherent scaling and corrosion issues.Joint Operation’s wafra field producing wells tubing/casing materials made of L-80 carbon steel. Due to the aggressive nature of the high H2S and carbonate salinity brine the workover rate on downhole pump and tubing failures were too frequent. The Wafra risk assessment was developed with the likelihood of failure (LoF) based on historical corrosion/scale well workover failures and the consequence (CoF) of failure directly tied to oil daily oil production. Therefore selection of the higher risk wells (Risk = LoF x CoF) became a direct relationship between the wells with the higher workover failure rates (associated with corrosion and scaling issues) and higher oil producing wells.Further selection and baseline monitoring considerations were also given to dissolved Iron & Manganese concentrations within the individual production well water samples utilizing the COPRA corrosion modelling techniques for sour brines. Chemical treatment and monitoring programs were then designed with consideration given to downhole pumping systems (SRP PCP and ESP) vs. effective chemical treatment and delivery system economics. Selection and design of chemical programs included a step-wise implementation to ensure the effective level of treatment was being accomplished for ensuring the dependability and integrity of the wells as well as the downstream gathering system and facilities.

Key words: Downloadable, Risk Assessment, Corrosion, Scale, Workover, Failures, Production, CoF, LoF

Product tags
Also Purchased
Picture for Biocide Injection to Eliminate the Risk of Bacterial Growth and Corrosion Failure in Non Internal Co
Available for download

51316-7117-Biocide Injection to Eliminate the Risk of Bacterial Growth and Corrosion Failure in Non Internal Coated Pressure Safety Valve from an Eocene Sub Centre at Partitioned Zone (Kingdom of Saudi Arabia and Kuwait). – A Case Study

Product Number: 51316-7117-SG
ISBN: 7117 2016 CP
Author: Hamed Al-Shammary
Publication Date: 2016
$20.00

The case study demonstrates different approaches towards what went wrong and why on pressure safety valve susceptible to MIC growth. The Eocene Sub Centre-1 Shipping Pump discharge header connected pressure safety valve (01PSV172) reported leaking from the body and POD requested Asset Integrity Division to conduct Root Cause Analysis with recommendation.
Picture for Sour Service Performance of EPR - 110ksi Grade Material
Available for download

51316-7119-Sour Service Performance of EPR - 110ksi Grade Material

Product Number: 51316-7119-SG
ISBN: 7119 2016 CP
Author: Thodla Ramgopal
Publication Date: 2016
$20.00

Sour service behavior of a 110ksi material was investigated in a range of production environments. Slow strain rate tests were performed at a strain rate of 510-7/s, in sweet as well as in sour production environments. The strain to failure in sweet environments is lower than the in-air values and is substantially lower in the presence of H2S.

 

 
Picture for Flow Accelerated Corrosion of Carbon Steel Pipe Carrying Hot Condensate Water in a Chemical Plant
Available for download

51316-7127-Flow Accelerated Corrosion of Carbon Steel Pipe Carrying Hot Condensate Water in a Chemical Plant

Product Number: 51316-7127-SG
ISBN: 7127 2016 CP
Author: Fengmei Song
Publication Date: 2016
$20.00

Multiple leaks occurred with a carbon steel pipe carrying hot condensate water (300F and 140 psi).  A root cause analysis was performed, including visual and metallographic examination of two failed samples chemical, analysis of weld metal and base metal and chemical analysis of water samples.  Results show that flow accelerated corrosion (FAC) was the responsible mechanism leading to the failures.
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support