定向鑽孔

定向鑽孔英語:) 是钻孔在施工時,随着深度的增加,变化钻孔倾角,達到以設計的角度穿过目標層位[1] 。定向鑽孔的施工技术复杂,设计前要有足够的地质资料,如岩层厚度、深度、倾角、硬度变化等[2] 。定向鑽井有以下幾個目的:增加儲層在钻孔長度的暴露,和增加采收率。不能用垂直钻孔施工地區,例如城鎮、湖泊或其他難以施工的地面。定向鑽孔能集中地表井口位置,減少工地干擾或鑽機移動、並增加經濟效益[1]。例如,在一個海上钻井平台,可钻40口井或更多井。從而降低成本。鑽“洩壓井”可以釋放噴井管綫的壓力,然後鑽“減壓井”,將重質流體泵入以抑制噴井高壓[3]

定向鑽孔的照片

參考文獻

  1. "Development tendency of horizontal directional drilling". DC Solid control. 6 June 2013. Archived from the original on 8 July 2013
  2. "Maersk drills longest well at Al Shadeen". The Gulf Times. 21 May 2008. Archived from the original on 14 February 2012. Retrieved 5 March 2012
  3. Julia Cauble Smith (12 June 2010). "East Texas Oilfield". Handbook of Texas Online. Texas State Historical Association. Retrieved 23 September 2014
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.