An Innovative Approach for Tubing Integrity Monitoring With the Application of Electromagnetic Tool and Caliper Tool in Tandem
- Haziq Norintan Farina (Dimension Bid (Malaysia) Sdn.Bhd) | Azzad Hafiz (Dimension Bid (Malaysia) Sdn.Bhd) | Aliff Safwan (Dimension Bid (Malaysia) Sdn.Bhd) | Norfasya Norfasya (Dimension Bid (Malaysia) Sdn.Bhd) | Choi Yee Xiong (Petronas Carigali Sdn. Bhd) | Ahmad Zawawi (Petronas Carigali Sdn. Bhd) | M. Yusmanizeil (Petronas Carigali Sdn. Bhd) | Siti Aisyah (Petronas Carigali Sdn. Bhd) | M. Idham (Petronas Carigali Sdn. Bhd) | M. Wahyudeen (Petronas Carigali Sdn. Bhd)
- Document ID
- International Petroleum Technology Conference
- International Petroleum Technology Conference, 6-9 December, Doha, Qatar
- Publication Date
- Document Type
- Conference Paper
- 2015. International Petroleum Technology Conference
- 3 Production and Well Operations, 4.2.3 Materials and Corrosion, 3 Production and Well Operations
- Workover, Corrosion, Electromagnetic, Caliper, Tubin Integrity
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- 114 since 2007
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Caliper survey is well known for its accurate measurement of inner casing and tubing since the introduction to the market few years ago. From the survey, most pipe integrity issues with failure size as small as pitting can be measured to a better understanding on the tubing conditions. Most of the failures on pipe developed over time and small pitting more than often turn into damaging large hole as time goes by. Thus, caliper survey provides an ideal solution for monitoring the pipe integrity condition.
Not until the recent innovation of a new electromagnetic tool altered the perspective on monitoring the pipe integrity condition. By combining with caliper tool, it improves the pipe integrity survey by identifying the location of weaknesses; in specific the exact point of metal loss, as well as to measure the thickness of the tubing. Applying the remote eddy current concept, the magnetic wave will travel from the wave generator, along the outside of the casing before passing back through the 12 sensors mounted on the inside of the tool's bowsprings. The casing thickness affects the arrival time, phase and amplitude of the returning signal and this info will be analyzed with the improved 3D visualization software and statistical software.
Three (3) wells; A, B and C were completed during 1990's. The wells have high CO2 content at 9–15%. Surface facilities in the field have limitation in handling high CO2 fluid, thus these wells were producing intermittently from 1996–2010. An upgrading of surface facilities were undertook from year 2012–2014 to maximize the technical potential of the wells in the field. Workover job was agreed upon the upgrading but intervention team has another idea in looking into the matters. A logging survey was proposed consists of caliper, electromagnetic and pressure gauge to evaluate the conditions of the tubing integrity. The logging involved the entire tool associated in real time and tandem, the first time ever done in this region. The results from the survey showed differences of corrosion percentage between caliper data only and combination of caliper and electromagnetic tool. Combining these techniques of survey in tandem gives a more details corrosions percentage and thickness compared to caliper only. It also minimized the operation logging time and well downtime. In conclusion, it was found that the current tubing thicknesses of these wells are within the allowable corrosions rate, consequently workover campaign was dropped and roughly around USD 30 Million had been saved.
The comprehensive strategy on running these surveys in tandem provided in this paper can be used as guidance for an innovative approach in corrosion monitoring.
|File Size||3 MB||Number of Pages||13|