Optimization of Big-Bore HTHP Wells to Exploit a Low Pressure Reservoir in Indonesia
- Jonathan M. Benesch (ExxonMobil Qatar) | Nazri Nor (RasGas Co. Ltd.) | _ Ngatijan (BPMIGAS)
- Document ID
- Society of Petroleum Engineers
- SPE Drilling & Completion
- Publication Date
- March 2006
- Document Type
- Journal Paper
- 44 - 53
- 2006. Society of Petroleum Engineers
- 2 Well Completion, 1.6.6 Directional Drilling, 1.12.1 Measurement While Drilling, 5.3.4 Integration of geomechanics in models, 1.6.1 Drilling Operation Management, 1.7.6 Wellbore Pressure Management, 4.6 Natural Gas, 1.2.2 Geomechanics, 4.1.2 Separation and Treating, 4.2 Pipelines, Flowlines and Risers, 1.14.1 Casing Design, 3.2.3 Hydraulic Fracturing Design, Implementation and Optimisation, 1.10 Drilling Equipment, 2.4.3 Sand/Solids Control, 4.1.5 Processing Equipment, 1.11.4 Solids Control, 1.11.2 Drilling Fluid Selection and Formulation (Chemistry, Properties), 1.10.1 Drill string components and drilling tools (tubulars, jars, subs, stabilisers, reamers, etc), 5.4.2 Gas Injection Methods, 4.2.3 Materials and Corrosion, 1.7 Pressure Management, 3 Production and Well Operations, 1.14 Casing and Cementing, 4.3.4 Scale, 1.7.1 Underbalanced Drilling, 1.6 Drilling Operations, 1.8 Formation Damage, 5.6.4 Drillstem/Well Testing, 1.5 Drill Bits, 4.1.9 Heavy Oil Upgrading, 1.11 Drilling Fluids and Materials, 1.7.5 Well Control, 1.1 Well Planning
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A big-bore, high-pressure/high-temperature (HP/HT) drilling and completion program of seven wells was undertaken under challenging conditions in a low-pressure carbonate reef in Indonesia. Significant enhancements made during the program substantially reduced well times and cost. These wells incorporated the largest tubingless gas completions in the world. Higher-than-anticipated initial flow rates were achieved through an innovative strategy to decrease formation damage. The wells were completed openhole without pumping kill-weight fluids at the end of underbalanced drilling (UBD) operations. These wells are the first to combine big-bore completions, drill-in liners, and UBD in individual wellbores.
The Arun field was initially developed in the 1970s, with world-class gas reserves at HP/HT conditions. The first big-bore wells were designed and implemented in the early 1990s to enhance field development. These wells enabled a maximum gas-flow rate per well and reduced overall field-development cost by minimizing the number of required wells. Eleven wells were drilled and completed, realizing flow rates up to 217 MMscf/D each, and were considered highly successful.
Since the initial drilling program, reservoir pressure in the Arun field has declined from 7,100 psi to less than 600 psi. As a result, 31 wells have been lost to formation subsidence and wellbore collapse. This prompted a need for additional big-bore wells to meet volume requirements. The new wells were executed under more challenging conditions caused by the severely drawndown completion interval.
|File Size||1 MB||Number of Pages||10|
Benesch, J.M. 1991. Planning for and Operating in Hostile Offshore DrillingEnvironments. Paper presented at the Indonesia Petroleum Assn. AnnualConference, Jakarta, 15-17 November.
Benesch, J.M., Camacho, A.G., Matsuzawa, S., and Dawson, C.R. 1995. Planning and Execution of aRecord-Extended Reach Well in Japan. Paper SPE 29923 presented at the SPEInternational Meeting on Petroleum Engineering, Beijing, 14 -17 November.
Cannan, W.L. et al. 1993. Bigbore Well Completions: A NewCompletions Technique for Arun Field. Paper SPE 25384 presented at the SPEAsia Pacific Oil and Gas Conference, Singapore, 8-10 February.
Dolan, S.P., Williams, G.J., and Crabtree, R.J. 2001. Planning and Execution of Big BoreWells—Offshore NW Australia. Paper SPE/IADC 67820 presented at the SPE/IADCDrilling Conference, Amsterdam, 27 February-1 March.
Sinor, L.A., Tybero, P., Eide, O., and Wenande, B.C. 1998. Rotary Drilling Liner for DepletedReservoirs. Paper IADC/SPE 39399 presented at the IADC/SPE DrillingConference, Dallas, 3-6 March.
Vogt, C., Makohl, F., Suwarno, P., and Quitzau, B. 1996. Drilling Liner Technology forDepleted Reservoir. Paper SPE 36827 presented at the SPE European PetroleumConference, Milan, Italy, 22-24 October.