| Autor: |
Ulrich Herz, Oscar Kelder, Jerry Fontanilla, Fowzi Al-Shammari, Bader A. Alshammari, Abdullah Hamood Al Towijri, Shouxiang Mark Ma, Shaizad Ahmed Chatriwala, Andrew Kesson Murray |
| Předmět: |
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| Zdroj: |
Scopus-Elsevier |
| Popis: |
This paper discusses the first successful coiled-tubing-conveyed production logging operation in a short radius horizontal well in Saudi Arabia. The production logging tool (Polaris[TM]) was modified with knuckle joints to pass through the severe well dogleg of 58 degrees per 100 ft in openhole. Subsequently, the tool was conveyed an additional 1400 ft in the horizontal section. The logging objective was to determine the flow profile for oil and water and identify the water entry points. The major challenge was tool deployment in this short radius well to gain access to the horizontal section. Monitoring of short radius horizontals has been almost nonexistent due to high dogleg severity. Because of the rigid tool length of conventional production logging systems, tool modifications were crucial and extensive job planning preceded the operations. Planning included modeling maximum rigid tool length, tool modifications, simulations for job feasibility with 1.75 in coiled tubing, and tool string bending moment tests. Prior to the main run, a dummy tool was successfully conveyed through the high dogleg to determine the feasibility of the operation. The successful completion of the log allowed the generation of a flow profile and identification of the major fluid entry poiints. These will help determine the most efficient way of sidetracking wells in the Ghawar Field to maximize reservoir sweep efficiency and to aid in planning future short radius horizontal wells. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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