IWCF Well Control Level 5. Celle Drilling Conference 2017

Transcription

1 IWCF Well Control Level 5 Celle Drilling Conference 2017

2 Contents IWCF well control level 5 course program Background - who is it for Structure and contents Delivery approach Questions

3 Why? Level 5 background and audience

4 Level 5 background New training level recommended by the International Association of Oil & Gas Producers Report 476 recommends enhancements to well control training, examination and certification

5 Level 5 background Engineers and approving authorities training Part of role specific training (level 1, 2, 3, 4 and 5) Engineers, senior engineers, managers, team leaders, well examiners, technical authorities Drilling, completion, well services Operations, design, petroleum, regulator

6 Level 5 background Learning outcome Capable of planning and performing safe well design and intervention operations that maintain well control and Able to evaluate technically on deviations to the well operations plan and advise accordingly

7 Level 5 objectives Overall Guarantee well over the lifecycle Design and maintain well barriers for the well lifecycle Cross-discipline Well planning Drilling Well intervention Well abandonment Consistent Definitions Standards Procedures Competence requirements

8 Structure Level 5 program structure and contents

9 Level 5 structure Course structure and length 5 days / max 12 candidates Pre-work and case study project Drilling and well intervention participate together Written assessment with invigilation

10 Level 5 content and delivery method IWCF requirements Information on recent well control or well events Case studies Region-specific standards and regulatory requirements Scenario exercises on full-scale simulator If applicable, detailed course content is decided by the employer together with the training provider Minimum content according to IOGP 476, Appendix C

11 Well management and maintenance Well deliverables lifecycle phases Risk assessment techniques Risk management Well barriers Barrier verification Annular cement Inflow testing Formation strength testing Rock mechanics Kick tolerance Maintenance and failure of well Management of corrosive fluids Shallow gas Tertiary well control Well abandonment

12 References API Spec 6A/ISO 10423:2009: Specification for Wellhead and Christmas Tree Equipment API Std 65-2: Isolating Potential Flow Zones During Well Construction API Spec 16A/ISO 13533:2001: Specification for Drill-Through Equipment API Spec 16C: Choke and Kill Equipment API Spec 16D: Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment Guidelines for the Abandonment of Wells (Issue 5, July 2015) API RP 59: Recommended Practice for Well Control Operations API RP 64: Recommended Practice for Diverter Systems Equipment and Operations API Std 53: Blowout Prevention Equipment Systems for Drilling Wells API RP 90: Annular Casing Pressure Management for Offshore Wells API RP 96: Deepwater Well Design and Construction API Bull 97: Well Construction Interface Document Guidelines ISO Risk management - Risk assessment techniques IADC Deepwater Well Control Guidelines ISO : Well Life cycle governance Norsok D-010: Well in drilling and well operations 117 Recommended guidelines for Well Integrity - NEW REVISION OP119: Well Life Cycle Integrity Guidelines, Issue 3, March 2016 EU: Offshore Safety Directive 2013/30/EU Oil & Gas UK: Well Life Cycle Integrity Guidelines (Issue 3, March 2016) ISO Risk management

13 Well management and maintenance Well deliverables lifecycle phases Risk assessment techniques Risk management Well barriers Barrier verification Annular cement Inflow testing Formation strength testing Rock mechanics Kick tolerance Maintenance and failure of well Management of corrosive fluids Shallow gas Tertiary well control Well abandonment

14 Well management and maintenance Well deliverables lifecycle phases Risk assessment techniques Risk management Well barriers Barrier verification Annular cement Inflow testing Formation strength testing Rock mechanics Kick tolerance Maintenance and failure of well Management of corrosive fluids Shallow gas Tertiary well control Well abandonment

15 Well throughout the well lifecycle Enhance knowledge and skills in planning and performing safe well design and/or intervention operations to ensure well control and well is maintained throughout the well life cycle Well guidelines: Norsok: D-010 Well Integrity in drilling and well operations O&G UK: Well Life Cycle Integrity Guidelines EU: Offshore Safety Directive 2013/30/EU ISO :2017 Well Integrity Part 1: Life Cycle Governance

16 ISO 16530: well Minimum requirements to ensure management of well Assuring well comprises two main building blocks: 1. Ensure well during well design and construction 2. Manage well throughout the remaining well life thereafter Addresses minimum compliance requirements for well operators Developed by oil and gas operating companies Practical recommendations and techniques

17 Well management system Operators implement a WIMS to ensure that well is maintained throughout the well life cycle In the WIMS a combination of technical, operational and organizational processes are applied At the highest level, a well policy shall be defined

18 Well management system WIMS should address Risk assessment Organizational structure Well barriers Performance standards Well barrier verification Reporting and documentation Management of change process Continuous improvement process Auditing

19 Well management system Optional workflow Basis of design phase Design phase Construction phase Operational phase Intervention phase Abandonment phase Lessons learned WIMS elements are common to all phases

20 Delivery Insight into detailed contents and delivery approach

21 Well management and maintenance Well deliverables lifecycle phases Risk assessment techniques Risk management Well barriers Barrier verification Inflow testing Annular cement Formation strength testing Rock mechanics Kick tolerance Maintenance and failure of well Management of corrosive fluids Shallow gas Tertiary well control Well abandonment

22 Well management and maintenance Well deliverables lifecycle phases Risk assessment techniques Risk management Well barriers Barrier verification Inflow testing Annular cement Formation strength testing Rock mechanics Kick tolerance Maintenance and failure of well Management of corrosive fluids Shallow gas Tertiary well control Well abandonment

23 Risk assessment Delegates should be able to evaluate technically on deviations to the well operations plan and advise accordingly Example: during well execution, the casing got stuck 300m off bottom can t move up or down. Only option is to cement it in place. Now what?

24 Risk assessment: management of change The MOC process should include the following steps a) Identify a requirement for change. b) Identify the impact of the change and the key stakeholders involved. This includes identifying what standards, procedures, work practices, process systems, drawings, etc. would be impacted by the change. c) Perform an appropriate level of risk assessment in accordance with the well operator risk assessment process. This includes: identifying the change in risk level(s) via use of a risk assessment matrix or other means; identifying additional preventive and mitigating measures that can be applied to reduce the risk level; identifying the residual risk of implementing the change/deviation; reviewing the residual risk level against the well operator s risk tolerability/alarp acceptance criteria; updating the risk register accordingly. d) Submit the MOC proposal for review and approval in accordance with the well operator s MOC system.

25 Well management and maintenance Well deliverables lifecycle phases Risk assessment techniques Risk management Well barriers Barrier verification Annular cement Inflow testing Formation strength testing Rock mechanics Kick tolerance Maintenance and failure of well Management of corrosive fluids Shallow gas Tertiary well control Well abandonment

26 Well management and maintenance Well deliverables lifecycle phases Risk assessment techniques Risk management Well barriers Barrier verification Annular cement Inflow testing Formation strength testing Rock mechanics Kick tolerance Maintenance and failure of well Management of corrosive fluids Shallow gas Tertiary well control Well abandonment

27 Annular cement Objective of cementing operations is to successfully seal the annulus with cement Many wells suffer from sustained casing pressure or other well issues related to non-successful cementing operations API Standard 65 part 2 and API RP 10 series

28 Annular cement Isolating potential flow zones in wells during well construction Effective fluid displacement Loss of hydrostatic pressure when cement sets Practices and factors that affect cementing success

29 Well management and maintenance Well deliverables lifecycle phases Risk assessment techniques Risk management Well barriers Barrier verification Annular cement Inflow testing Formation strength testing Rock mechanics Kick tolerance Maintenance and failure of well Management of corrosive fluids Shallow gas Tertiary well control Well abandonment

30 Well management and maintenance Well deliverables lifecycle phases Risk assessment techniques Risk management Well barriers Barrier verification Annular cement Inflow testing Formation strength testing Rock mechanics Kick tolerance Maintenance and failure of well Management of corrosive fluids Shallow gas Tertiary well control Well abandonment

31 Well management and maintenance Well deliverables lifecycle phases Risk assessment techniques Risk management Well barriers Barrier verification Inflow testing Annular cement Formation strength testing Rock mechanics Kick tolerance Maintenance and failure of well Management of corrosive fluids Shallow gas Tertiary well control Well abandonment

32 Inflow testing Incomprehension about inflow testing Incorrect usage of horner plots Incorrect interpretation of horner plots (too quick) No official standard Are supervisors on the rig trained Supervisory personnel on the rig who have to make decisions are often not trained to make those

33 Flow rate (ltr/min) 3 INFLOW TEST Return flow is reducing due to cold fluid heating up Is this still fluid heating up or a barrier leak? 0 Time (minutes)

34 Summary IWCF Well Control Level 5 Training Guarantee well over the lifecycle Design and maintain well barriers for the well lifecycle Plan and perform safe well design and intervention operations Evaluate and act technically on deviations to the plan

35 The end any questions?