Volume 32 Issue 3
Jul.  2015
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WU Zaixu, WANG Yaning, ZHENG He, GU Kejiang. Study and Application of Compound Organic Salt Drilling Fluid in Block Xuwen[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(3): 93-95. doi: 10.3969/j.issn.1001-5620.2015.03.026
Citation: WU Zaixu, WANG Yaning, ZHENG He, GU Kejiang. Study and Application of Compound Organic Salt Drilling Fluid in Block Xuwen[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(3): 93-95. doi: 10.3969/j.issn.1001-5620.2015.03.026
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Study and Application of Compound Organic Salt Drilling Fluid in Block Xuwen

doi: 10.3969/j.issn.1001-5620.2015.03.026

  • Drilling Department of Sinopec's Jiangsu Petroleum Engineering Ltd. Co., No. 101 Shaobogantang Lu, Jiangdu District, Yangzhou City, Jiangsu 225261, China

  • Received Date: 2015-01-15
  • Publish Date: 2015-05-31
    Abstract
  • Block Xuwen is located in Beibu Gulf Basin, composed of Weixinan Sag, Wushi Sag, Fushan Sag and Leidong Sag. The deeper formations are mainly hard and brittle fractured shales with high collapsing pressures and are easy to collapse. Compound organic salt drilling fluid had been chosen to drill the unstable shale formations to prevent the borehole from collapsing. Compared with offset wells, three wells drilled with organic salt drilling fluid had rate of penetration increased by 44%, drilling time reduced by 26 days (average), and rate of hole enlargement reduced by 50%, indicating that borehole instability was greatly mitigated. Wireline logging, because of improved borehole stability, was performed with higher rate of success.

     

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    • References(5)
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