Volume 35 Issue 2
Mar.  2018
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2018  >  35(2): 40-43
SONG Xuncheng, WANG Peng, ZHANG Yu, WANG Junxing, LUO Renwen, TIAN Hui, JIA Jianchao, WANG Zhanqiang. Low Solids Ultra-high Temperature Drilling Fluid Technology for Well Antan-4X[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(2): 40-43. doi: 10.3969/j.issn.1001-5620.2018.02.006
Citation: SONG Xuncheng, WANG Peng, ZHANG Yu, WANG Junxing, LUO Renwen, TIAN Hui, JIA Jianchao, WANG Zhanqiang. Low Solids Ultra-high Temperature Drilling Fluid Technology for Well Antan-4X[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(2): 40-43. doi: 10.3969/j.issn.1001-5620.2018.02.006
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Low Solids Ultra-high Temperature Drilling Fluid Technology for Well Antan-4X

doi: 10.3969/j.issn.1001-5620.2018.02.006

  • 1. China University of Petroleum, Qingdao, Shandong 266580;

  • 2. Research Institute of Engineering Technology of CNPC Bohai Drilling Engineering Company Limited, Tianjin 300457;

  • 3. The Second Drilling Branch of CNPC Bohai Drilling Engineering Company Limited, Langfang, Hebei 06500;

  • 4. Development Department of Huabei Oilfield, Renqiu, Hebei 062552;

  • 5. International Drilling Materials Supply Company(Bidding Center), BHDC, Tianjin 300457

  • Received Date: 2017-11-03
  • Publish Date: 2018-03-30
    Abstract
  • Well Antan-4X is a prospecting well for exploring the oil/gas reserves in the Yangshuiwu buried hill area in Huabei Oilfield. The depth of this well, 6455 m, has set a new record of well depth in Huabei Oilfield. The fourth interval of the well penetrated formations mainly with limestone and mudstone, and the down-hole temperatures are between 210-217℃, which poses rigorous requirement on the high temperature resistance of drilling fluid. Laboratory studies on the mud samples taken from well site have been conducted, and based on the studies 4 key mud additives have been selected to optimize the mud formulation, a low solids drilling fluid with temperature resistance up to 200-220℃. In field operations, the drilling fluid was maintained at its best state in accordance with bottom hole temperature, thereby to maximize the cost performance of the drilling fluid. During the entire drilling operations, the drilling fluid showed stable properties and good cuttings carrying performance, ensuring the safe drilling operations in the ultra-high temperature fourth interval.

     

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