Xinjiang Petroleum Geology

Xinjiang Petroleum Geology ›› 2009, Vol. 30 ›› Issue (2): 228-231.

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Regulation of Horizontal Well Producing Pressure Differential in Unsaturated Reservoir

ZHU Wei-hong1a, WANG Tao1b,2, RUAN Yang1c, ZHANG Jin3, ZHANG Jian-hua1b   

  1. 1. Tarim Oilfield Company, PetroChina, a.Research Institute of Exploration and Development; b.Department of Development; c.Department of Production Operation, Korla, Xinjiang 841000, China;
    2. Faculty of Petroleum and Natural Gas Engineering, China University of Petroleum, Beijing 102249, China;
    3. College of Petroleum Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
  • Received:2008-10-08 Revised:2008-12-10 Online:2009-04-01 Published:2020-08-25

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Abstract: HD water drive sandstone reservoir in Tarim basin is a complex reservoir with water cut differential in different areas controlled by structure and stratigraphy, which is developed by horizontal wells on the whole. Based on the percolation law of horizontal wells, integrated with performance monitoring data from the fluid producing section logging and production testing of horizontal wells, this study reveals that the differential of skin effects within horizontal intervals is an essential reason for aggravating or weakening the intrastratal contradictions. And the effect of regulating producing pressure differential on development effectiveness is studied for guiding related production and measure regulation, keeping the production stable while bringing the water-cut under control as well as highly effective development by horizontal wells in this area.

Key words: complex reservoir, horizontal well, producing pressure differential, regulation, control, skin effect

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