TY - JOUR
TI - Intelligent optimization design method for horizontal well trajectory in Longdong shale oil
AU - Gong Chenxing
AU - Li Zhijun
AU - Pan Tao
AU - Xin Qingqing
AU - Wang Chaochen
AU - Song Xianzhi
JN - Thermal Science
PY - 2024
VL - 28
IS - 4
SP - 3443
EP - 3450
PT - Article
AB - In order to select a better design trajectory, it needs to spend a lot of  energy on parameter adjustment and calculation. Therefore, this paper  establishes the intel­ligent optimization design model of horizontal well  trajectory in with the target length and drilling string drag under rotary  drilling conditions as the targets, and takes the target entry accuracy as  the complex constraints. Meanwhile, multi-ob­jective optimization algorithm  and distributed calculation are used to realize the automatic optimization  of the well trajectory. Under the given arithmetic conditions, compared  with the original design trajectory, a horizontal well was designed with  this method, the trajectory length is shortened by 92.1 m, and the maximum  build-up rate is changed from 5.50° per 30 m to 4.97° per 30 m, reducing by  9.6%. Under the same BHA and boundary conditions, the drag becomes 232.42  kN, which is 6.8% lower than that before optimization.