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Abstract

Until recently, the acquisition of resistivity borehole image data from well bores less than 6” in<br>diameter has been impossible, due to the size of conventional borehole imaging tools currently<br>available on the market. In addition, conventional deployment methods limit efficient rig time<br>utilization and ultimately lead to higher risk and costs associated with acquiring image data. The<br>introduction of new logging technology now allows operators to obtain excellent image logs in wells as<br>slim as 3 inches in diameter, and in wells with challenging hole conditions.<br>Image logs are required to properly understand formation properties and fractures details; and to help<br>in future drilling and completion decisions. In Saudi Arabia, the cost savings that are possible by<br>sidetracking existing well bores makes the drilling and completion of ultra slim lateral wells very desirable.<br>Access into these wells is achieved by employing numerous conveyance techniques including well<br>tractors and drill pipe to push logging tools along the horizontal section to TD. The borehole images<br>can be acquired using small diameter imaging technology with acquisition in real time and in memory.<br>The combination of conveyance and imaging technologies enable operators to make important<br>decisions on where to place completion hardware in the well to enable the well to produce to it’s full potential.<br>This paper describes the new imaging technology and will discuss the image acquisition experience in<br>the world’s first ultra slim hole and extended reach horizontal sections in Saudi Arabia.

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/content/papers/10.3997/2214-4609-pdb.248.219
2010-03-07
2024-06-18
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