WE Report

Lessons Learned

Lesson Learned





By: Drilling Engineer

Report No.

5175

Discipline/Origin

Drilling
No origin

Well

Carmen
35/10-10S

Date created

2023/05/08
943 days ago

Project Phase

Operational
Project Phase

LL Type/Classification

Operational
N/A

Deepsea Yantai


What happened in Reservoir section:
Followed the HPHT manual for fingerprinting. Fingerprinter found some improvement point to the procedure

What Was Planned

To follow the HPHT manual procedure for fingerprinting

What Was Learned

Findings:
– Fingerprint 1, instrument synchonization: To check all the GSS sensors against rig sensors.
– Fingerprint 4, flowback to pits after shutting pumps down: Fingerprint max possible circulation rate as well (above the drilling flow rate)
– Fingerprint 8, Trapped pressure with (a) drilling and (b) slow circulation flow rates: To use different flow rates possible while drilling. And to do it on both K&C lines. Then both can be used for further fingerprints. And to record both the flow line and downhole temperature before stopping pumps.
Suggestion ot fingerprint 12: Thermal expansion

What Actions Are Required

See improvement points from fingerprinter in attached word document.

Additional Documentation


HPHT-Fingerprinting.docx

EDITOR


CLOSE LL (testing)





New Lesson Learned

You do not have permission to view this form.




\n\t\t

\n\t\t\t\n\t\t\t