We performed crosswell tomography on a real crosswell seismic line from shengli oilfield by using simultaneous iterative reconstruction technique ( sirt ) based on shortest path tree ( spt ) curved ray tracing 摘要利用基于最短路徑樹彎曲射線追蹤的聯(lián)合迭代重建層析成像( sirt )技術進行井間地震層析成像,對勝利油田的一對井間實際資料進行了處理。
The authors established an initial velocity model based on the first break time of the actual data , then realized the forward calculation with the improved shortest path ray tracing algorithm , and applied the improved constrained damped simultaneous iterative reconstruction technique ( cdsirt ) to solve large - scale and sparse equations for inversing the near - surface velocity field 根據(jù)實際地震數(shù)據(jù)的初至波時間建立初始速度模型;采用改進的最短路徑射線追蹤算法進行正演;利用改進的約束帶阻尼聯(lián)合迭代重建技術( cdsirt )求解大型、稀疏的方程組來反演近地表的速度場。