斜井层位标定技术及其应用

Deviated well horizon calibration technology and its application

河南油田地质调查处,南阳 473132

Geological Survey Division, Henan Oilfield, Nanyang 473132

随着油田勘探开发的深入, 对许多岩性、裂缝性、地层不整合、低渗透性及高陡构造等特殊圈闭类型的油气藏的勘探开发, 已广泛采用斜井技术, 斜井层位标定技术是储层研究和油藏描述中的关键技术之一。本文从斜井轨迹方程入手, 论述了斜井的层位标定技术, 介绍了空间层位标定和虚拟井层位标定的两种方法原理, 并以斜井测井信息为纽带, 建立起标志层和主力油层与地震剖面上反射同相轴的对应关系。通过实际应用具有较好的实用性。

The deviated well technology has found extensive application in the exploration and devel-opment of special-trap type oil and gas reservoirs such as lithologic, fractured, stratigraphic unconformi-ty, low permeability, and high-dip structure traps. The horizon calibration technique of deviated wells is one of key techniques for reservoir characterization. In this paper we start with the deviated well trajec-tory equation, discuss the technique, and introduce the principles for both space and virtual well horizon calibrations. Taking the deviated well log information as a link, we then construct the corresponding re-lation between the seismic reflection events and the marker layers or the main oil layers. Actual applica-tion results prove the practicality of the technique.