地层压力预测技术及其在准中董2井北三维区 的应用地层压力预测技术及其在准中董2井北三维区 的应用.pdf

Advances in Geosciences 地球科学前沿, 2015, 5(6), 414-420 Published Online December 2015 in Hans. /journal/ag /10.12677/ag.2015.56041 Formation Pressure Prediction Technology and Its Application in 3D Area of Northern Block Well Dong 2, Central Junggar Basin Shuhua Wang, Jianhua Zhang, Huanju Qian Western Subdivision of Exploration Development Research Institute, Shengli Oilfield Company, SINOPEC, Dongying Shandong th th th Received: Dec. 4 , 2015; accepted: Dec. 25 , 2015; published: Dec. 28 , 2015 Copyright © 2015 by authors and Hans Publishers Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). /licenses/by/4.0/ Abstract The formation pressure is mostly predicted by the interval velocity. In 3D area of Northern Block Well Dong 2, central Junggar Basin, the original interval velocity field was established by the stack- ing velocity data through Dix formula, and then corrected the original interval velocity field by using sonic logging velocity, the more accurate interval velocity field was obtained. The 3D formation pressure of work area was predicted by using the Eaton method, the prediction result indicated that the top interface of abnormal overpressure in study area was basically located at the bottom inter- face of Toutunhe Formation, the pressures of Toutunhe Formation and its overlying layers were normal, only part of Toutunhe Formation developed the abnormal overpressure, Xishanyao Forma- tion, Sangonghe Formation and Badaowan Formation were abnormal overpressure intervals. The final pressure prediction result was reasonable after it was analyzed by logging pressure detecting, measured formation p