水平井技术在新海27块稠油底水油藏开发中的应用

随着油气田开发技术的进步，水平井开采技术日臻完善，并在底水油藏、高角度裂缝性油藏、稠油和低渗透油藏开发中广泛应用，并取得了明显的效果。新海27块东一段是典型的稠油底水油藏，经过10多年的直井开发已进入高含水开发后期，开发调整效果较差，底水锥进严重，含水上升快。在搞清油藏地质特征和剩余油分布规律的基础上，共实施3口水平井，投产后效果很好，初期产能高，含水率低，大大提高了采油速率，取得了良好的经济效益和社会效益。

Application of Horizontal Well Technology in Bottom Water and Heavy Oil Reservoir of Bloke Xinhai 27

With the progress of oilfield development technique, the production technologies of horizontal well are getting more and more perfect. These technologies are widely used in bottom water reservoir, vertical fracture reservoir, heavy oil reservoir and low permeability reservoir, and bring into obvious economic benefit. D1 reservoir of Block Xinhai 27 is a typical bottom water reservoir. Over 10 years development with vertical wells, it has entered a high water cut period of development. The effect of development and adjustment with vertical wells is not good, as a result of bottom water coning more seriously and water cut rising faster. Therefore, 3 horizontal wells have been drilled on the basis of research on the geologic characteristic of reservoir and the distribution of remaining oil. After putting into production, the effect is comparatively good, showing a high initial productivity and low water cut. Oil production rate has greatly been increased.