CN103233715A - 一种压裂混砂装置 - Google Patents

一种压裂混砂装置 Download PDF

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CN103233715A
CN103233715A CN2013101650407A CN201310165040A CN103233715A CN 103233715 A CN103233715 A CN 103233715A CN 2013101650407 A CN2013101650407 A CN 2013101650407A CN 201310165040 A CN201310165040 A CN 201310165040A CN 103233715 A CN103233715 A CN 103233715A
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CN103233715B (zh
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崔日哲
吕亮
刘�东
韩增平
李守哲
张怀智
杜明强
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Yantai Jereh Oilfield Services Group Co Ltd
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Abstract

本发明提供了一种压裂混砂装置,用于混配压裂液,其特征在于,包括固体输送装置和与所述固体输送装置导通的固液混配装置,所述固液混配装置为压力容器,其包括:能够将所述固体输送装置输出的所述压裂液的固体颗粒导入的固体导入口;导入所述压裂液的基液的基液导入口;容纳所述固体颗粒和所述基液的混配内腔;导出混配而成的所述压裂液的固液导出口。本发明提供的压裂混砂装置,其能够将在常温下呈气态的二氧化碳或石油气等物质通过高压使其保持为液体状态,进而与固体颗粒混合形成压裂液,实现了制备以液态二氧化碳或液化石油气(丙烷)作为基液的压裂液的目的。

Description

一种压裂混砂装置
技术领域
本发明涉及采油/气设备技术领域,更具体地说,涉及一种压裂混砂装置。
背景技术
油、气井在试油或生产过程中,由于近井地带有污染(钻井、固井、洗压井过程都会造成污染)或地层原始渗透率低的原因会造成油、气井的产量较低,而此问题可以通过压裂技术来解决。
压裂技术是指采油或采气过程中,利用液体压力作用,使油、气的储层形成裂缝的一种方法,其具体操作是采用高压大排量的泵,利用液体传压的原理,将具有一定粘度的液体(即压裂液),以大于储层的吸收能力的压力向储层注入,并使井筒内压力逐渐升高,从而在井底憋起高压,当此压力大于井壁附近的地应力和地层岩石的抗张强度时,便在井底附近地层产生裂缝,继续注入压裂液,裂缝向前延伸并填以压裂液,关井后压裂液存在于裂缝中,从而在井底附近地层内形成具有一定几何尺寸和高导流能力的填砂裂缝,使井达到增产增注的目的。其中,压裂液由作为溶剂的液体(一般称为基液)和作为溶质的固体颗粒(如石英砂等)混配而成。
目前,传统的压裂工艺中普遍采用水基或者油基的压裂液对油层或者气层进行压裂,但是使用水基或者油基的压裂液进行压裂操作存在着一定的缺陷:首先,水基或者油基的压裂液在降解以后,会对储层造成伤害,尤其是降解产生的杂质会对储层裂缝周围的毛细孔造成伤害。其次,压裂完成后,水基或者油基的压裂液反排时间长,而且反排效果很难预测,影响油、气田的正常开采。为了避免上述问题的出现,人们采用了液态二氧化碳或液化石油气(丙烷)作为压裂液的基液,但是,二氧化碳或石油气(丙烷)只能在一定压力下呈液体状态存在,而现有的适用于水基或者油基压裂液的混砂装置(用于混配固、液原料使其成为压裂液)因为无需使压裂液存在于高压环境中,所以其容纳空间均为开放式设计,并不适用于以液态二氧化碳或液化石油气(丙烷)作为基液的压裂液的制备。
因此,如何提供一种用于制备以液态二氧化碳或液化石油气(丙烷)作为基液的压裂液的压裂混砂装置,是目前本领域技术人员亟待解决的问题。
发明内容
有鉴于此,本发明提供了一种压裂混砂装置,其能够适用于以液态二氧化碳或液化石油气(丙烷)作为基液的压裂液的制备。
为了达到上述目的,本发明提供如下技术方案:
一种压裂混砂装置,用于混配压裂液,其特征在于,包括固体输送装置和与所述固体输送装置导通的固液混配装置,所述固液混配装置为压力容器,其包括:
能够将所述固体输送装置输出的所述压裂液的固体颗粒导入的固体导入口;
导入所述压裂液的基液的基液导入口;
容纳所述固体颗粒和所述基液的混配内腔;
导出混配而成的所述压裂液的固液导出口。
优选的,上述压裂混砂装置中,还包括底盘车,所述固液混配装置设置在所述底盘车的后悬上。
优选的,上述压裂混砂装置中,还包括用于容纳所述固体颗粒的密闭存储装置,且所述存储装置设置于所述底盘车上。
优选的,上述压裂混砂装置中,所述固体输送装置与所述存储装置的内腔导通以将存储于所述存储装置内的所述固体颗粒输送出所述存储装置。
优选的,上述压裂混砂装置中,还包括设置在所述底盘车上且与所述混配内腔连通的液体添加装置。
优选的,上述压裂混砂装置中,所述底盘车上设置有驱动所述固液混配装置和所述液体添加装置工作的液压驱动装置。
优选的,上述压裂混砂装置中,所述存储装置为压力罐。
本发明提供的压裂混砂装置中,其在工作时,对固液混配装置的混配内腔施加压力,固体颗粒在固体输送装置的驱动下从固体导入口进入到固液混配装置中,由于固液混配装置为压力容器,其混配内腔为高压环境,基液通过基液导入口进入到固液混配装置内部后,在高压作用下依旧能够保持为液体状态,使其成为压裂液的基液,固体颗粒和基液在混配内腔中混配成压裂液后从固液导出口导出。本发明提供的压裂混砂装置,其能够将在常温下呈气态的二氧化碳或石油气等物质通过高压使其保持为液体状态,进而与固体颗粒混合形成压裂液,实现了制备以液态二氧化碳或液化石油气(丙烷)作为基液的压裂液的目的。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的压裂混砂装置的结构示意图。
图1中:
底盘车1、液压驱动装置2、存储装置3、固液混配装置4、固体输送装置5、液体添加装置6。
具体实施方式
本发明提供了一种压裂混砂装置,其能够适用于以液态二氧化碳或液化石油气(丙烷)作为基液的压裂液的制备。
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
如图1所示,本发明实施例提供的压裂混砂装置,用于混配压裂液,例如以液态二氧化碳或液化石油气(丙烷)作为基液的压裂液,其包括:固体输送装置5和与固体输送装置5导通的固液混配装置4,固液混配装置4为压力容器,其包括:
能够将固体输送装置5输出的压裂液的固体颗粒导入的固体导入口;
导入压裂液的基液的基液导入口;
容纳固体颗粒和基液的混配内腔;
导出混配而成的压裂液的固液导出口。
本实施例提供的压裂混砂装置中,其在工作时,对固液混配装置4的混配内腔施加压力,固体颗粒在固体输送装置5的驱动下从固体导入口进入到固液混配装置4中,由于固液混配装置4为压力容器,其混配内腔为高压环境,基液通过基液导入口进入到固液混配装置4内部后,在高压作用下依旧能够保持为液体状态,使其成为压裂液的基液,固体颗粒和基液在混配内腔中混配成压裂液后从固液导出口导出。
本实施例提供的压裂混砂装置,其能够将在常温下呈气态的二氧化碳或石油气等物质通过高压使其保持为液体状态,进而与固体颗粒混合形成压裂液,实现了制备以液态二氧化碳或液化石油气(丙烷)作为基液的压裂液的目的。
为了进一步优化上述技术方案,本实施例提供的压裂混砂装置中,还包括底盘车1和用于容纳压裂液的固体颗粒的密闭存储装置3,且存储装置3和固液混配装置4设置于底盘车1上,具体的固液混配装置4设置在底盘车1的后悬上,如图1所示。在现有技术中,混砂装置均为开放式设计,其进行的混配操作是在常压环境中进行的,而本实施例提供的存储装置3优选为密闭存储装置3,其能够通过固体输送装置5与固液混配装置4导通,进而共同形成一个封闭空间,并使此封闭空间中的压力大于外界大气压,进而使得固体颗粒在固体输送装置5的驱动下能够更加方便的进入到固液混配装置4中,而无需担心固体颗粒在进入固液混配装置4的过程中对固液混配装置4的混配内腔的压力造成影响,进而使压裂液的混配工作能够连续进行。当然,本实施例提供的存储装置3也可以为非密闭存储装置3,固体颗粒在固液混配装置4工作前通过固体输送装置5进入到固液混配装置4中,然后固液混配装置4在密封状态下进行工作。
将存储装置3和固液混配装置4设置在底盘车1上,有利于本实施例提供的压裂混砂装置的运输移动,提高了其工作灵活性,可以很方便的在不同施工场地之间进行运输。具体的,将固液混配装置4设置在底盘车1的后悬上能够进一步减小本实施例提供的压裂混砂装置的占用空间,使设备布局更加紧凑。
如图1所示,在本实施例中,因为存储装置3处于其轴线沿水平方向设置的状态,所以为了使存储装置3内的固体颗粒能够顺利进入到固液混配装置4中,本实施例提供了水平设置且贯穿存储装置3的内腔的固体输送装置5,以对内腔中的固体颗粒进行驱动,进而将其导入到固液混配装置4中。
本实施例提供的压裂混砂装置中,还包括设置在支撑装置上与固液混配装置4的混配内腔连通的液体添加装置6,如图1所示。在压裂液混配的过程中,如果需要在压裂液中添加添加剂,则使液体添加装置6进行工作,进而通过液体添加装置6将添加剂导入到固液混配装置4的混配内腔中,并与压裂液混合。
具体的,固液混配装置4和液体添加装置6通过设置在底盘车1驾驶室后方的液压驱动装置2提供动力以进行工作,如图1所示。
优选的,存储装置3为压力罐,为低温压力容器。其在工作时能够与固液混配装置4连通形成一个密封空间,并可承受一定的低温和压力要求,能够满足液态二氧化碳或液化石油气(丙烷)的存在要求。
本实施例提供的压裂混砂装置,在具体使用时,首先将固液混配装置4的基液导入口与上游的液态二氧化碳或液化石油气(丙烷)存储设备连接,将固液混配装置4的固液导出口与下游的压裂泵送设备连接,这样就能够通过固液混配装置4的三个接口将上游的液态二氧化碳或液化石油气(丙烷)存储设备、压力罐,下游的压裂泵送设备形成一个连通的密闭空间,作业之前,首先在压力罐内加入作业要求的砂子,加砂完毕后,将压力罐与液态二氧化碳或液化石油气(丙烷)存储设备连接,向压力罐内缓慢充装液态二氧化碳或液化石油气(丙烷),当压力罐内砂子的温度和压力达到施工作业要求时,停止充装,关闭液态二氧化碳或液化石油气(丙烷)充装阀门,整套设备开始工作,工作过程中,液态二氧化碳或液化石油气(丙烷)通过基液导入口进入到固液混配装置4中,与固体输送装置5从压力罐内运送出来的砂子混合后从固液导出口排出,进入下游的压裂泵送设备。在此混配过程中,如果需要添加添加剂,则通过液体添加装置6将添加剂添加到压裂液中。
对所公开的实施例的上述说明,使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。因此,本发明将不会被限制于本文所示的这些实施例,而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (7)

1.一种压裂混砂装置,用于混配压裂液,其特征在于,包括固体输送装置(5)和与所述固体输送装置(5)导通的固液混配装置(4),所述固液混配装置(4)为压力容器,其包括:
能够将所述固体输送装置(5)输出的所述压裂液的固体颗粒导入的固体导入口;
导入所述压裂液的基液的基液导入口;
容纳所述固体颗粒和所述基液的混配内腔;
导出混配而成的所述压裂液的固液导出口。
2.根据权利要求1所述的压裂混砂装置,其特征在于,还包括底盘车(1),所述固液混配装置(4)设置在所述底盘车(1)的后悬上。
3.根据权利要求2所述的压裂混砂装置,其特征在于,还包括用于容纳所述固体颗粒的密闭存储装置(3),且所述存储装置(3)设置于所述底盘车(1)上。
4.根据权利要求3所述的压裂混砂装置,其特征在于,所述固体输送装置(5)与所述存储装置(3)的内腔导通以将存储于所述存储装置(3)内的所述固体颗粒输送出所述存储装置(3)。
5.根据权利要求4所述的压裂混砂装置,其特征在于,还包括设置在所述底盘车(1)上且与所述混配内腔连通的液体添加装置(6)。
6.根据权利要求5所述的压裂混砂装置,其特征在于,所述底盘车(1)上设置有驱动所述固液混配装置(4和所述液体添加装置(6)工作的液压驱动装置(2)。
7.根据权利要求3所述的压裂混砂装置,其特征在于,所述存储装置(3)为压力罐。
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