Chamber Gas Lift in Horizontals
- C. N. Hardegree (Occidental Oil and Gas Corp.) | B. A. Gerrard (Occidental Oil and Gas Corp.) | S. L. Wildman (Occidental Oil and Gas Corp.) | K. S. McKenzie (Occidental Oil and Gas Corp.)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- February 2020
- Document Type
- Journal Paper
- 18 - 25
- 2020.Society of Petroleum Engineers
- chamber lift, intermittent lift, pilot, artificial lift, gas lift
- 7 in the last 30 days
- 135 since 2007
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In this paper we highlight a pilot project in which chamber gas lift was installed in two unconventional horizontal wells. Chamber gas lift, a combination of deep gas lift and intermittent gas lift, allows for an efficient, closed completion with the cyclic injection of high-pressure gas, which expands and rapidly displaces fluid at high velocity from deep in the well. Development of the system was a collaboration internally and in conjunction with the vendor to install what was historically a vertical-well assembly through the curve section and into a horizontal wellbore. The chamber assembly was successfully designed, sourced, manufactured, installed, and operated. To modify the design from vertical to horizontal applications, components were custom-designed to maintain a sealed chamber. Components deemed most likely to fail are replaceable by slickline intervention. Results indicate a sustained lower downhole pressure than the previous intermittent-gas-lift system, an increase in production, and a good chamber-sweep efficiency.
|File Size||847 KB||Number of Pages||8|
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