Orienting Perforations for Permanent Fiber Optics Deployment

Transcription

1 MUSCAT, OMAN Orienting Perforations for Permanent Fiber Optics Deployment MENAPS NOV 14TH, 2016 AUTHORS: PDO; Hanshi Salem, Haitham Mohammed, Kechichian Jackie & Velazco Quesada Conny.

2 Project Team Asset PDO: Conny Valezco Jackie Kechichian Saif Jaradi Andika Rafliansyah, Suryan Guntupalli Petrus In 'T Panhuis Zainab Rawahi Nasir Oritola Solenn Bettembourg Wells P&D PDO: Said Nofli Arjan Vos Dotun Ogunwale Said Harthy Cameron: Khaled Nasr Eldin Cameron Machine Shop Shell US Kelly McCoy Steve Hirshblond 1 Wells Ops. PDO: Salim Furaisi Qasim Rawahi Ahmed Rashdi Salem Hanshi Mohamed Hathm Rig-26 Well site Team SLB: Giles Powell Mahmoud Seiam Mohd Shafie Jumaat Pablo Fernando Estrada SLB Completions SLB Wireline Wells Contracts PDO: Saif Aufi Unni Madhavan Nasser Abbadi

3 Contents Background information Need for Oriented Perforations Available Options for Oriented Perforation (electromagnetic vs mechanical) Well design Job execution Deviated well Vertical well Leanings Well performance 2 PDO :Orienting Perforations for Permanent Fiber Optics Deployment

4 Background Information Why Oriented Perforations? To Perforate away from Fiber Optic cable installed outside production casing in cased and perforated completions 3 Orienting Perforations for Permanent Fiber Optics Deployment

5 Background Fiber Optics Cable Specs ¼ or 1/8 standard control line used to deploy fiber, how do we locate it to orient the perforation guns? After cementation, the cable may cause a streak with no cement that can be detected by ultrasonic imaging tools (not warranted) Electromagnetic logging tools can detect the cable if magnetic properties enhanced Picture Courtesy of Shell Houston If cable position known from surface, orientation can be done without the need for mapping 4

6 Background - Available Options for Oriented Perforation Electric line convey Tubing convey Principle Uses motor to locate and position guns based on high electromagnetic signal Uses mechanical orientation tool to position guns based on pre-set casing profile Applications Limited gun size Limited in length of perforation High risk in vertical wells due to tool sensitivity to centralization Carry bigger gun size Can perform long perforation interval in one go Deviation is not necessary but high accuracy in cable positioning w.r.t. orientation profile is critical (rig operation) 5

7 Changes in Well Design Proposed Design for HW Polymer Pilot Water Injectors Rus Aquifer (47-192m) 9-5/ 8" 36# LTC externally coated casing Changes to standard well design and perforation strategy: Surface casing ID increased to allow for larger production hole size (larger cement sheath expected) Mid UeR Aquifer (total losses) LPC cable 7" Cement 200m above 9-5/ 8" Csg shoe Production casing run with FO cable and cable locator profile (depth based on target perforation interval) Good Top of Cement ~ 600m Shammar Shale (~ mahbdf) Natih - Carbonate Fm ( m ahbdf) Nahr Umr Shale (~ m) 4-1/ 2" GRE lined tubing with DHG 4-1/ 2 x 7" ICC profile for mechanical orientation Underbalance perforation not possible, however, dynamic underbalance considered after initial injectivity assessment Shot density reduced by half U1, U2, U3 Oriented Perforations: Calcrite (~894m) U3 and U4 Shot angle limited to 90deg coverage U4, U6 L1 Intra Mahwis Shale (~ 934m - 952m) 7" 23# K55 LTC 958m Fixed TD Risk: changes to injectivity/productivity and fluid velocity Evaluate well performance 6

8 Job Execution (Deviated Well Application) Outline program Scrapper run Jetting and dummy run of mechanical positioning tool Electromagnetic tool mapping and perforating (0deg phasing) Ultrasonic tool mapping and confirmation of 1 st perforation Tubing convey perforation (0, +/- 45deg) Temperature survey to confirm performance of perforation 7 Casing profile Mech. Positioning Tool Orienting Perforations for Permanent Fiber Optics Deployment

9 Job Execution (Vertical Well Application) Outline program Scrapper run Jetting and dummy run of mechanical positioning tool Ultrasonic tool (detect cable position at casing profile location) Tubing convey perforation (0, +/- 30deg) Temperature survey to confirm performance of perforation FO cable had not rotated w.r.t. casing profile Manufacturing pattern on pipe 8

10 Job Execution (Gun Orientation and Space Out) Run TCP guns with MPT and perforate. Casing profile Aligning Guns with Mech. Positioning Tool 9

11 Learning s Use special rotatable scraper to avoid issues with casing profile Run with location tool as dummy run to clean & confirm casing profile clear from any debris or cement. Connect the guns together in perforation workshop and make scribe to avoid misalignment while running the guns in hole. Ensure drift ID of the X/O below CSLT more than fishing tool for drop bar. Displine sub should be within 10 deg orientation range to minimize misalignment between the guns & CSLT. 10

12 Well performance DAS and DTS show injection at the same depths as the PLT, injectivity index not affected 11

13 MUSCAT, OMAN QUESTIONS? THANK YOU! Orienting Perforations for Permanent Fiber Optics Deployment