CAJ | 학술논문

吴仓堡油区三叠系油层有长6、长8、及长9等开采层系，均具有低孔、低渗透、低压、低产等特征，一般不经压裂无自然产能，但是常规水力压裂改造后，单井产量低、产量下降快、油田稳产形势严峻，严重制约了三叠系油藏的有效开发。本文针对三叠系主力油层长6、长8和长9为主要研究对象，结合吴起油田勘探开发过程中的水力压裂改造实践经验，借鉴国内外低渗透、低压致密油层改造先进技术理念，以储层研究为基础，分析了体积压裂的增产机理及在吴仓堡油区开展体积压裂的可行性，探索了吴仓堡油区三叠系油层体积压裂的工艺设计模式，为吴起油田低渗透、低压致密油层开展体积压裂提供了有益的参考。
오창보유구삼첩계유층유장6、장8、급장9등개채층계，균구유저공、저삼투、저압、저산등특정，일반불경압렬무자연산능，단시상규수력압렬개조후，단정산량저、산량하강쾌、유전은산형세엄준，엄중제약료삼첩계유장적유효개발。본문침대삼첩계주력유층장6、장8화장9위주요연구대상，결합오기유전감탐개발과정중적수력압렬개조실천경험，차감국내외저삼투、저압치밀유층개조선진기술이념，이저층연구위기출，분석료체적압렬적증산궤리급재오창보유구개전체적압렬적가행성，탐색료오창보유구삼첩계유층체적압렬적공예설계모식，위오기유전저삼투、저압치밀유층개전체적압렬제공료유익적삼고。
Chang 6, Chang 8 and Chang 9 oil formations which are being mined in Wucangbu area are characterized by low prosity, low permeability,low pressure, low production etc. In general, the well without fracturing always has no natural productivity. However, fracturing has been completed, there still exist some problems that hamper the oil efficient recovery such as lower single well production, rapidly declined production and unexpected situation for stable production. The paper takes examples of Chang 6, Chang 8 and Chang 9 formations that are mainly produce layers. We have drawn lessons from the advanced technical idea deals with the lower permeability and lower pressure tight reservoirs at home and abroad , combining with the practical experience of hydraulic fracturing during the process of exploration and development of WuQi Oilfield,based on the reservoir research, we make an analysis on the enhance mechanism of volume fracturing and investigate the feasibility of volume fracturing design patterns at Triassic reservoirs Wucangbu area, then explores the process design model of the volume fracturing for the Triassic reservoir. The study will be a beneficial reference for the volume fracturing performed on low permeability and low pressure tight reservoir in Wuqi oilfield.