秦皇岛32-6油田优势通道定量评价研究

发布时间：2018-03-16 06:00

本文选题：优势通道　切入点：模糊评判　出处：《重庆科技学院》2015年硕士论文　论文类型：学位论文

【摘要】：秦皇岛32-6油田是典型的大型复杂河流相稠油油田，地质储量高达1.7×108m3，现有生产井165口，年产油量218×104m3，具有非常好的开发前景。然而，该油田具有储层结构疏松、易出砂、原油粘度大、非均质性较强等显著特点，并且，油田含水率高达86%，注入水沿优势通道窜流，导致了注入水无效循环，继续进行注水开发，效果差，给油田的后续开发带来了难题。针对以上问题，以秦皇岛32-6油田优势通道为研究对象，通过模糊综合评判方法确定存在优势通道的油水井，并计算了优势通道体积、渗透率等参数，为后期封堵优势通道提供数据支撑，同时提出了优势通道治理对策，，解决了开发中的突出矛盾，达到了开发中后期稳油控水、提高油藏采收率的目的。通过对秦皇岛32-6油田优势通道的研究，获得以下认识： ①通过模糊综合评判方法，对优势通道进行存在性识别，从定量的角度确定了优势通道的位置，将存在优势通道的油水井组与正常生产的油水井组区分开，为后期进行调剖堵水提供选择目标； ②通过动态数据法、经验公式法和概率密度模型法，获得油水井间优势通道参数，由优势通道参数计算结果可见，随着窜流程度加剧，优势通道渗透率、孔隙半径、厚度、体积和孔隙度等关键参数也随之发生变化； ③针对秦皇岛32-6油田北区和南区12口发生窜流的水井，通过将优势通道分为单向窜流和多向窜流，提出了采用聚合物冻胶的封堵对策，计算了堵剂用量并设计了大量注入堵剂的封堵方法。
[Abstract]:Qinhuangdao 32-6 oilfield is a typical large complex fluvial heavy oil field with geological reserves of 1.7 脳 108m3, 165 production wells and annual oil production of 218 脳 104m3.It has a very good development prospect. However, the oilfield is characterized by loose reservoir structure, easy sand production, high viscosity of crude oil, strong heterogeneity and so on. Moreover, the water cut of the oilfield is as high as 86%, and the injected water flows along the dominant channel, which leads to the ineffective circulation of injected water. The effect of water injection development is poor, which brings difficulties to the further development of oil fields. In view of the above problems, taking Qinhuangdao 32-6 oilfield as the research object, the oil and water wells with dominant channels are determined by fuzzy comprehensive evaluation method. The parameters such as the volume and permeability of the superior channel are calculated to provide data support for blocking the dominant channel in the later period, and the countermeasures of controlling the superior channel are put forward, which solve the outstanding contradiction in the development and achieve the stability of oil and water control in the middle and late stages of development. The purpose of improving oil recovery. Through the research on the dominant channel of Qinhuangdao 32-6 Oilfield, the following understandings are obtained:. The main results are as follows: (1) by fuzzy comprehensive evaluation method, the existence of dominant channel is identified, the location of dominant channel is determined from the quantitative point of view, and the oil-water well group with dominant channel is distinguished from the oil-water well group in normal production. To provide the selection target for profile control and water shutoff in the later stage; 2 through dynamic data method, empirical formula method and probability density model method, the parameters of dominant passage between oil and water wells are obtained. From the calculation results of the parameters of dominant channel, it can be seen that the permeability, pore radius and thickness of dominant channel are increased with the increase of channeling flow. The key parameters such as volume and porosity also changed. In view of 12 wells with channeling flow in the north and south regions of Qinhuangdao 32-6 Oilfield, by dividing the dominant channels into one-way channeling flow and multi-direction channeling flow, the plugging countermeasures using polymer gel are put forward. The amount of plugging agent was calculated and the plugging method of a large amount of plugging agent was designed.
【学位授予单位】：重庆科技学院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE358

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