MAASP Analysis with SEPAL Well Surveillance Solution About

MAASP Analysis with SEPAL - Well Surveillance Solution

About Us! 100% indigenous Petroleum Engineering Software Development & Consulting Company Providing Engineering Solutions for Oil & Gas upstream sector with focus on subsurface asset management Commenced Engineering Research in 2003 and commenced SEPAL WSS design in 2008 Seasoned Nigerian partners across the industry ©Cypher. Crescent Ltd. 1

Outline Overview of Well Surveillance Solution What is MAASP Calculation MAASP Reporting Benefits Conclusion ©Cypher. Crescent Ltd. 2

Overview of SEPAL-WSS An advanced well schematic management system Easy generation and management of well schematic diagrams. Provides presentation options (charts and reports) and decision analysis tools that aid the engineer obtain useful information about his wells ©Cypher. Crescent Ltd. 3

WSS Architecture ©Cypher. Crescent Ltd. 4

Maximum Allowable Annular Surface Pressure MAASP is the highest pressure that an annulus will be exposed to, beyond which the integrity of some elements in that annulus will be compromised MAASP Evaluation Requires Ø Well Completion Configuration information Ø Mechanical Performance Specification of all the components in the well completion Ø Annuli properties including cement information ©Cypher. Crescent Ltd. 5

COMMON MAASP CALCULATION CHALLENGES Lack of relational database for well schematics Insufficient/ inaccurate well data for calculation Uncertainty in the type of fluid above TOC Cumbersome Excel spreadsheets Non-standardization of MAASP variables Multiple Well Scenarios for MAASP calculation & recalculation ©Cypher. Crescent Ltd. 6

Consequences: Every Operator fears Harm to People Asset Damage Environmental Effect Impact on Company’s reputation Penalties ©Cypher. Crescent Ltd. 7

No More. . . Running around for data Use of calculators Multiple Excel Spreadsheets Time spent on calculations Irregularities in MAASP results ©Cypher. Crescent Ltd. 8

We Offer. . Basic 4 step approach Generate Well Schematic Enter Engineering Properties Enter Wellhead rating & Annulus Data Based on ISO Standards Easy to Use Accurate results Robust database of casing and tubing pressure ratings Option for client to define their own MAASP functions Display MAASP ©Cypher. Crescent Ltd. 9

MAASP: Our 4 Wellhead Steps Approach 1: Enter 2: 3: Generate Engineering Annulus Well Data Schematic Properties Step 4: Rating ©Cypher. Crescent Ltd. 10

MAASP IN WSS… ©Cypher. Crescent Ltd. 11

Reports ©Cypher. Crescent Ltd. 12

Reports ©Cypher. Crescent Ltd. 13

MAASP Customization: showing scripts ©Cypher. Crescent Ltd. 14

MAASP Customization: Results Customized to suit operators standards and requirements Change default report format to suit client needs Interoperability feature enables interaction with other applications ©Cypher. Crescent Ltd. 15

Benefits Time savings in creating & managing hundreds of well schematics Transparent , consistent and auditable way of managing MAASP Support company’s HSE/Operational policies Easy integration of data from other sources Quicker planning schedules & estimation of workover requirements Deliver MAASP projects within shortest possible time ©Cypher. Crescent Ltd. 16

Conclusion Represents a shift towards good practices Simplifies a very complex and error prone workflow Clients can define their MAASP functions In addition to MAASP, obtain comprehensive status diagrams for all wells Centralized database for managing schematics ©Cypher. Crescent Ltd. 17

Appreciation THANK YOU ©Cypher. Crescent Ltd. 18

WSS Sample Schematics ©Cypher. Crescent Ltd. i

MAASP Values Calculation for Annulus A Examples of two different A- annuli, for calculating MAASP ©Cypher. Crescent Ltd. ii

MAASP Calculation Equations for Annulus A ©Cypher. Crescent Ltd. iii

MAASP Values Calculation for Annulus B Examples of two different B- annuli, for calculating MAASP ©Cypher. Crescent Ltd. iv