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Rigless Recompletion Using Cement Packer – EROTON E & P Experience

Authors
Onyeka Emeka (EROTON Exploration and Production Company Limited) | Yisa Adeeyo (EROTON Exploration and Production Company Limited) | Augusta Etim (EROTON Exploration and Production Company Limited) | Opeyemi Oluwalade (EROTON Exploration and Production Company Limited) | Onyema Ohabuike (EROTON Exploration and Production Company Limited) | Uzoamaka Okene (EROTON Exploration and Production Company Limited) | Leziga Bakor (EROTON Exploration and Production Company Limited) | Ikwan Ukauku (EROTON Exploration and Production Company Limited) | Niyi Afolabi (EROTON Exploration and Production Company Limited) | Jolomi Esimaje (EROTON Exploration and Production Company Limited)
DOI
https://doi.org/10.2118/198769-MS
Document ID
SPE-198769-MS
Publisher
Society of Petroleum Engineers
Source
SPE Nigeria Annual International Conference and Exhibition, 5-7 August, Lagos, Nigeria
Publication Date
2019
Document Type
Conference Paper
Language
English
ISBN
978-1-61399-691-1
Copyright
2019. Society of Petroleum Engineers
Downloads
3 in the last 30 days
84 since 2007
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SPE Non-Member Price: USD 28.00

With global Oil prices still recovering from the down cycle and coupled with high cost of drilling new wells, EROTON E & P has devised strategies to manage declining oil production, increase oil production from her existing assets and add new reserves through team integration and improved subsurface data management by using fit-for-purpose technology (cement packer) and other collaborative tools.

Cement packer technology is a relatively fast-to-deploy and cost-effective rig-less intervention technique that allows easy access to hydrocarbon reserves behind pipe which are located above and between production packers in wells where the existing completion intervals have reached their economic limit. This technology can be used to separate a new zone earmarked for completion from other intervals including non-hydrocarbon zones. The cement plug is pumped into the allocated space to serve as an effective production packer. This becomes viable and economic option when the interval is above an existing parker. Cement packer activity can be carried out using a rigless unit with the benefit of significant cost savings while achieving seamless isolation of the production intervals.

One example from the strings of successful cement parker operation, among a few others, is the CAAK-040 well in CAAK field. The well was drilled in 1988 and completed on X3050B and Y4050B reservoirs. Both intervals quit in 2001 at BSW above 80%. After the integrated subsurface evaluation using all available data including CO logging acquired across the existing and proposed completion intervals, CAAK-040 was proposed for a zone change. A rigless workover intervention of the well was executed and the production interval switched from Y4050B to C8000B reservoir on the new short string using cement packer technology to isolate Y4050B completion and recomplete in the new target sand. CAAK-040 did not flow after the cement packer and perforation operations were successfully executed and the well had to be lifted to production using a temporary gaslift system.

Currently, the well is performing above the planned potential of 1500bopd from C8000B reservoir. This paper will discuss the lessons learnt and best practices from the cement packer and re-perforation of CAAK-040 using a rigless workover unit.

There is continuous monitoring to ensure all approved company procedures and minimum standards are strictly adhered to.

To date, we have a total of five (5) wells that have been recompleted and reserve added using cement packer. This activity has accelerated the production system unlocking of short-term oil generation (STOG) production of over 5,000 b/d of oil in one-year target. The average total cost of this operation is about 20-30% of a conventional workover. Thereby saving the company over $20m with added rewards of reactivating shut-in wells and producing reserves that were previously sub-economical and inaccessible.

File Size  2 MBNumber of Pages   13

Harris, M. L. (2002, January 1). Innovative Through-Tubing Cement Packer Technique. Society of Petroleum Engineers. doi:10.2118/77804-MS

Hathcock, L., Gardner, C., Herbert, P., Hoss, R., King, L., & Norman, D. (1995, January 1). Innovative Through-tubing Workover Process Utilizing a Cement Packer. Society of Petroleum Engineers. doi:10.2118/30510-MS

Nowak, T. W., & Patout, T. S. (1997, December 1). Rigless Multi-zone Recompletion Using a Cement Packer Placed with Coiled Tubing: A Case History. Society of Petroleum Engineers. doi:10.2118/35613-PA

Jaja, A. J., Adeyinka, B., & Atanda, B. (2017, July 31). Cement Packer Re-Perforation - Well-AA Case Study. Society of Petroleum Engineers. doi:10.2118/189087-MS

Ogbuagu, F., & Tsakporhore, A. (2018, August 6). Innovative Cement Packer Deployment without the Associated Skin: A Niger Delta Case Study. Society of Petroleum Engineers. doi:10.2118/193524-MS

Osaronwaji, E., Nnajiofor, O., Chemmarikattil, R., Talabi, O., Onuh, H., Onobrakpor, O., & Omodu, O. (2018, August 6). Successful High-Angle Through-Tubing Cement Packer Deployment and Reperforation Using Coiled Tubing: Offshore Niger Delta. Society of Petroleum Engineers. doi:10.2118/193467-MS

Yoliandri, S., Wibowo, W., & Rich, D. (2002, January 1). Cement Packer: An Innovative Technique to Recover Reserves Above Packer Without Re-completion. Society of Petroleum Engineers. doi:10.2118/78493-MS

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