Efficiency Improvement and Effective Sand Control Completion Unit by Drilling Rig in Zawtika M9 Development Field
- Veerawit Benjaboonyazit (PTT Exploration and Production PCL PTTEP) | Puwadech Chatporntanadul (PTT Exploration and Production PCL PTTEP) | Kawin Intrachai (PTT Exploration and Production PCL PTTEP) | Meth Follett (PTT Exploration and Production PCL PTTEP) | Marvin Gary Rutland (PTT Exploration and Production PCL PTTEP) | Thanawee Kreethapon (PTT Exploration and Production PCL PTTEP) | Chatchai Kongdachudomkul (PTT Exploration and Production PCL PTTEP)
- Document ID
- Society of Petroleum Engineers
- IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, 27-29 August, Bangkok, Thailand
- Publication Date
- Document Type
- Conference Paper
- 2018. IADC/SPE Asia Pacific Drilling Technology Conference
- 2.2 Installation and Completion Operations, 3 Production and Well Operations, 7 Management and Information, 2.1.3 Completion Equipment, 3.2 Well Operations and Optimization, 3.2.3 Produced Sand / Solids Management and Control, 7.2.1 Risk, Uncertainty and Risk Assessment, 2 Well completion, 1.6 Drilling Operations, 4.2.3 Materials and Corrosion, 2.2 Installation and Completion Operations, 1.10 Drilling Equipment, 3 Production and Well Operations, 3 Production and Well Operations, 1.10 Drilling Equipment, 2.4.3 Gravel pack design & evaluation, 1.8 Formation Damage, 7.2 Risk Management and Decision-Making, 2.4 Sand Control
- Tender Assist Drilling Rig, Rig Conversion, Field Development, Sand Control Completion, One Rig Strategy
- 2 in the last 30 days
- 80 since 2007
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|SPE Member Price:||USD 9.50|
|SPE Non-Member Price:||USD 28.00|
Zawtika field, Block M9, Myanmar offshore is one of the gas fields that has been developed and been producing since 2013. Two types of well designs have been selected and drilled from platforms; Monobore (Tubingless completion, Gulf of Thailand technique) and Sand control well (cased hole gravel pack). Over the course of production operation many challenges and difficulties have been encountered; one of which is sand production resulting in excessive corrosion and damages to the surface facility and shorten the well life. Hence, sand control completion has been chosen as the main design for field development. During 2013-2014 Zawtika M9 Phase1A sand control wells were drilled with a drilling rig and later completed completion with a 2nd unit hydraulic workover. Though this strategy could bring a well to production soonest, it comes with additional cost and risks; mobilization, stand by, wait on weather, overheads, etc.
Up to now, Zawtika M9 Phase1B for sustainable gas production delivery, previous strategy has been adapted for more cost effective operation during an ongoing oil price crisis starting 2014. "One rig strategy" has been implemented with a tender assist drilling rig (TADR). The strategy is to drill all required wells on the platform, then to convert the drilling rig to completion mode and to run sand control completion. Drilling rig has large deck space, high deck load capacity and capability to accommodate 170 people, and sand control equipment can be installed permanently on drilling rig without major impact to drilling operation. The key completion personnel onboard shall relentlessly prepare and commission equipment to perform completion operation right after drilling operation is completed. Ultimately drilling rig can be converted from drilling to completion mode within 3-5 days, compared with a 15 days move of 2nd unit per platform. With this strategy, risk exposure to heavy lift and marine operation reduce significantly. In fact the unpredicted rig stand by due to bad weather in Zawtika M9 Phase1A becomes manageable due to lesser number of rig moves.
Sand control completion has been operated efficiently by using rig equipment, space and experienced crews. Many offline operations and activities can be performed concurrently, e.g. cement bond evaluation, wellbore cleanout, packer installation with wire-line, rack back tubular capability, etc. Likewise the drilling rig performance can be continuously optimized and improved. This also eventually extends to running speed enhancement, non-productive time mitigation by proven equipment and crews.
With this strategy, the rig has so far completed 3 platforms in Zawtika M9 Phase1B with significant improvement and remarkable record. The total drilling and completion well duration has significantly decreased from Phase1A 18 days to 10 days in Phase1B. Therefore, millions of cost reduction and saving from "One Rig Strategy" claimed.
|File Size||1 MB||Number of Pages||10|