By: Christina Sæland Rødne
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Report No.
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1432 |
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Discipline/Origin
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External Environment |
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Well
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Gomez |
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Date created
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2021/04/23 |
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Project Phase
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Planning |
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LL Type/Classification
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Planning |
Borgland Dolphin
Planning LL with DNO
Gomez (2/5-15)
PSA: Q
Lack of justification why BO rates are lower in ST than MB, as the ST is 500 m deeper and length of 2500 m
PSA: A
Add Energy has done an evaluation of the potential sidetrack and concludes with same or lower BO rates than mainbore. Snip of the evaluation was included in a letter sent to NEA 29.03.2021 (attached), which can be summarized:
– Same reservoir properties, except small difference in top res depth (24m – neglectable)
– 9 5/8” csg set at same TVD as MB, alsoassuming same size DP and length of 8,5” BHA as MB.
– Sidetrack will be S-shaped and vertical through the reservoir. It will give a longer flow path from the top of reservoir to release point (530 m) and hence provide more friction compared to MB.
Borgland Dolphin
Question
Lack of justification why BO rates are lower in ST than MB, as the ST is 500 m deeper and length of 2500 m
Answer
Add Energy has done an evaluation of the potential sidetrack and concludes with same or lower BO rates than mainbore. Snip of the evaluation was included in a letter sent to NEA 29.03.2021 (attached), which can be summarized:
– Same reservoir properties, except small difference in top res depth (24m – neglectable)
– 9 5/8” csg set at same TVD as MB, alsoassuming same size DP and length of 8,5” BHA as MB.
– Sidetrack will be S-shaped and vertical through the reservoir. It will give a longer flow path from the top of reservoir to release point (530 m) and hence provide more friction compared to MB.
EDITOR
CLOSE LL (testing)
New Lesson Learned
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- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
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- RIG
Borgland Dolphin- Island Innovator
- Well
Oselvar- Gomez
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
-
- RIG
- Island Innovator
- Well
- Gråspett
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
-
- RIG
- Deepsea Bergen
- WELL
- Brasse
- Rungne
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
-
NO LLs for INEOS- RIG
- Borgland Dolphin
- WELL
- Fat Canyon
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
-
- RIG
- Deepsea Yantai
- Well
- Shrek
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
-
- PROJECT PHASE
- Operational
- Planning
- Reporting
- CLASSIFICATION
- Positive
- Negative
- Origin
- Own Experience
- Experience Transfer Meeting
- NEA Q&A
- PSA Q&A
- PSA Findings
- DMF
- Norog
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- Time Estimate<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Shallow Gas<\/a><\/li>\n\t\t\t\t\t\t\t\t
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- Location specific<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Bit<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Logistics<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Mud<\/a><\/li>\n\t\t\t\t\t\t\t\t
- BHA<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Cement<\/a><\/li>\n\t\t\t\t\t\t\t\t
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- Sidetrack design<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Time Estimate<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Shallow Gas<\/a><\/li>\n\t\t\t\t\t\t\t\t
- BOP<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Casing<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Planning<\/a><\/li>\n\t\t\t\t\t\t\t\t
- Planning<\/a><\/li>\n\t\t\t\t\t\t\t\t
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