致密油水平井试油工艺及产能评价方法研究

发布时间：2018-03-07 11:55

  本文选题：致密油　切入点：水平井　出处：《东北石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：与常规储层试油工艺相比,致密储层由于密度高、孔隙度低、渗透性差,压裂改造规模大,施工压力高,对井下压裂工具及井口、地面管汇的耐温、耐磨要求高;致密储层滤失小,导致放喷周期长,排液量大。针对致密储层这一复杂的勘探目标,压裂技术不断进步,相继开发了缝网压裂、转向压裂等技术,压裂规模也越来越大。为了与之相配套,相应的致密储层试油工艺技术及评价方法还存在问题,需通过科研攻关来实现。本文主要就致密油水平井试油工艺研究、现场试验、资料录取及评价解释方面四项研究内容:(1)设计了致密油平台井多井压裂的三通转六通由壬压裂装置,优化了深层气井防砂、控砂的测气地面流程,形成了致密储层大型压裂改造的井口及地面管汇配套技术。(2)研究形成了水平井排液求产地面及井下工具配套技术,形成了水平井多相流自动计量技术、油水分离技术、沉降罐自动计量技术,有效地解决了水平井试油施工中自动分离和精确计量的问题。(3)形成了压后早期合理控制放喷及水平井、直井低回压排液求产方法,压后合理控制放喷,对于防止和控制地层出砂意义重大。(4)通过探索致密储层弹性开采条件下的产能变化规律,形成了中长期产能评价两点理论新认识、一种定产优化新方法,中长期产能预测为试采方案制定、指导油田后期开发提供依据。
[Abstract]:Compared with conventional reservoir testing technology, dense reservoir has high density, low porosity, poor permeability, large scale of fracturing modification, high operation pressure, high temperature resistance and high wear resistance to downhole fracturing tools and wellhead and surface pipe. The filtration loss of tight reservoir is small, which results in long blowout period and large amount of liquid discharge. In view of the complex exploration target of tight reservoir, fracturing technology has been continuously improved, and fracturing technology has been developed successively, such as fracturing with fracture net, turning to fracturing and so on. The scale of fracturing is also getting larger and larger. In order to match it, there are still some problems in the relevant technology and evaluation method of tight reservoir oil testing, which need to be realized through scientific research. This paper mainly focuses on the research of tight oil horizontal well oil test technology, field test, Data acquisition and evaluation and interpretation four research contents: 1) designed a three-way to six-way non-nonfracturing device for multi-well fracturing of a tight oil platform well, and optimized the gas logging surface flow of deep gas wells for sand control and sand control. The matching technology of wellhead and surface pipe assembly for large-scale fracturing reconstruction in dense reservoir is formed. The technology of producing area and downhole tool for horizontal well drainage is studied, and the multi-phase flow automatic measurement technology and oil-water separation technology are formed in horizontal well. The automatic measurement technology of settling tank has effectively solved the problems of automatic separation and accurate measurement in horizontal well testing operation. In order to prevent and control formation sand production, it is of great significance to explore the law of productivity change under the condition of elastic exploitation of tight reservoir, and to form two new theories of medium and long term productivity evaluation and a new method of constant production optimization. Medium-and long-term productivity prediction provides basis for production test plan formulation and for guiding oil field later development.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE273
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本文编号：1579188