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在新区块录井,一般通过地层古生物对比、构造对比、电性对比、岩性对比、油气显示对比卡取地层,但这些方法有时不能满足现场卡取层位的需要。针对此问题,基于同一区块、同一批井地层预测所使用相同的地震速度模型,引入了地层预测界线和地层厚度与地层实钻界线和地层厚度误差横向对比分析方法,即根据已钻井地层预测界线和地层厚度与实钻地层界线和地层厚度误差推算出待钻井地质设计中预测的地层界线和地层厚度的误差,从而实现对待钻井地质设计预测的地层界线和地层厚度进行校正,进而达到减小地层预测与实钻地层界线和地层厚度的误差,实现地质录井准确卡取层位。通过XH2井和TK334井两口井的应用,证明该方法能够满足新区探井卡层需要,在勘探程度高、处于开发阶段的区块,其应用效果更好。
Logging in the new block generally compares the paleontology of the strata, tectonic contrast, electrical contrast, lithology contrast, and oil and gas shows the contrast stratigraphic card, but these methods sometimes can not meet the needs of the site access card. In view of this problem, based on the same block and the same seismic velocity model used in the same batch of well formation prediction, a transverse contrast analysis method of formation prediction boundary and stratum thickness and stratum solid boundary and stratum thickness error is introduced, that is, Boundary and thickness of stratum and the error of thickness of stratum boundary and thickness of stratum are deduced. The prediction of stratum boundary and stratum thickness error in geological design of drilling is deduced, so as to correct stratigraphic boundary and stratum thickness for drilling geological design prediction, and then to reduce Stratigraphy prediction and actual drilling of stratigraphic boundaries and strata thickness error, to achieve accurate logging geological logging wells. Through the application of XH2 well and TK334 well, it is proved that this method can meet the needs of exploration well card layer in new area. It has better application effect in blocks with high exploration and development stage.