The invention discloses a sectional free corresponding control oil recovery process for horizontal wells, which solves the problem of low oil production in the existing technology. It is specific that the oil well and well are divided into N sections according to the geological scheme, and then the tube columns are put into the well and the oil well respectively. According to the production order from the root to the finger, the first layer of the oil well is mined, the other layers of the well are closed, and all the N layers of the well are injected into the well to the well until the well. The first stage of water cut rises to 98%; in the same way, the other sections of the oil well are exploited. In this process, the effect of flow around the well is produced by the production of water well in turn, and the water injection is increased in each layer of the horizontal water injection well, so that the effect of the flow around the well is more obvious, the volume of the wave is enlarged and the oil in the well near the well is driven, and the water cut of the well is reduced and the production of the well is increased.
【技术实现步骤摘要】
一种油田水平井分段自由对应控制采油工艺
本专利技术涉及一种石油开发
分层注采工艺。
技术介绍
国内油田进行水平采出井分段开采工艺,由图1所示:是利用封隔器将油井分隔几个层段,每段下液压或电控开关的方式实现分段开采,通过地面打压向井下压控开关发出指令,压控开关在井下实现任意层段的开或关。通过井口计产和含水数据,找出高含水层位,操控压控开关将出水层关闭,实现找堵水分层开采的目的。采用上述工艺,在油井周围部署注水井,由于油层发育比较好,含水上升速度快,油井产量低。
技术实现思路
有鉴于此,本专利技术提供一种水平井分段自由对应控制采油工艺,通过油水井对应调整,利用强制绕流扩大波及体积,提高油井产量。为实现上述专利技术目的,本专利技术采用的技术方案是:一种油田水平井分段自由对应控制采油工艺,首先依据地质方案将油井和水井对应划分N个层段,然后在水井和油井中分别下入水平井分段注入工艺管柱和水平井分段采油工艺管柱,其特征在于:按照从根端到指端的生产顺序,通过打压方式,开采油井第一层段,关闭油井其它层段,向水井的N个层段全部注水,直至油井第一层段含水上升到98%及以上;继续通过打 ...
【技术保护点】
1.一种油田水平井分段自由对应控制采油工艺,首先依据地质方案将油井和水井对应划分N个层段,然后在水井和油井中分别下入水平井分段注入工艺管柱和水平井分段采油工艺管柱,其特征在于:按照从根端到指端的生产顺序,通过打压方式,开采油井第一层段,关闭油井其它层段,向水井的N个层段全部注水,直至油井第一层段含水上升到98%及以上;继续通过打压方式,开采油井第二层段,关闭油井其它层段,水井继续注N个层段,直至油井第二层段含水上升到98%及以上;依次类推,直至油井所有剩余层段均被开采。
【技术特征摘要】
1.一种油田水平井分段自由对应控制采油工艺,首先依据地质方案将油井和水井对应划分N个层段,然后在水井和油井中分别下入水平井分段注入工艺管柱和水平井分段采油工艺管柱,其特征在于:按照从根端到指端的生产顺序,通过打压方式,开采油井第一层段,关闭油井其它层段,向水井的N个层段全部注水,直至油井第一层段含水上升到98%及以上;继续通过打压方式,开采油井第二层段,关闭油井其它层段,水井继续注N个层段,直至油井第二层段含水上升到98%及以上;依次类推,直至油井所有剩余层段均被开采。2.根据权利要求1所述的油田水平井分段自由对应控制采油工艺,其特征在于:所述水平...
【专利技术属性】
技术研发人员:徐国民,孔令维,任志刚,刘亚三,
申请(专利权)人:中国石油天然气股份有限公司,大庆油田有限责任公司,
类型:发明
国别省市:北京,11
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