广1平5井_地质导向分析.ppt

Well Placement Schlumberger XCH/WYF 2009-9-1 Content Landing Plan and decision make着陆计划和指令 Decision making after the Landing着陆后指令 Analysis总结分析 Landing Plan-Target top prediction(着陆计划—目的层预测) Landing Plan (着陆计划) decision make at Landing point (着陆点指令) Decision making after the Landing—Why build? Decision making after the Landing—how to build? Result Thanks！ Schlumberger Confidential Schlumberger Confidential G1P5 地质导向分析报告 Projected Target top @ 1830.5m TVD according Q1-3-1(1) Top @1826.5m Model indicated Formation dip down 0.5deg Case 1: Target top is at 1830.5m TVD Case 2: Target top is at 1832m TVD From the case2, the VS will delay 15m comparing with original plan, Plan target A, confirm with client. 方案2中水平位移滞后15米， 和客户确认 WP suggest landing with inclination 87.5deg or more to decrease the risk of touch bottom or delay VS if possible. Client agreed the suggestion WP建议以87.5度以上着陆，以保证油层厚度在0.8米不触底 Target top @ 2004.3m, Slide from 2012m, build up to 89.4deg at 2025m, TVD drop 0.47m 2. No repeat section in Gr and Res curves 1. It is cutting down according to the azimuthal data from GVR 3. Cuttings are not from the top of target formation Case 1: same dip, should chasing target at 2056m MD/1831.8m TVD Case 2: Plate, should chasing target at 2090m MD or more 1.Keep incl between 90-90.5deg to reduce the risk of drill out the target again 2. It is expected at 2060-2070m MD dip0.5deg 1. Build up to 91-92deg to explorer the target 2. It is expected at 2090-2100m MD dip0.5deg Current depth2117m MD/inclination 92deg 1830.6m TVD 1m 0.4m Scenario 2– formation dip down quickly(2o) 1m 0.4m Scenario 3– formation dip up(2o) 0.4m 1m Scenario 1– formation pitch out or property change Not worth to drilling ahead due to no reservoir Huge drilling and geological risk for sidetrack due to Unstable and complex structure * * Schlumberger Confidential Schlumberger Confidential