CN2648065Y - 油井用高孔密射孔装置 - Google Patents

油井用高孔密射孔装置 Download PDF

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CN2648065Y
CN2648065Y CN 03201346 CN03201346U CN2648065Y CN 2648065 Y CN2648065 Y CN 2648065Y CN 03201346 CN03201346 CN 03201346 CN 03201346 U CN03201346 U CN 03201346U CN 2648065 Y CN2648065 Y CN 2648065Y
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perforating
bullet
axis
perforating bullet
group
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许为
史慧生
佟成秋
曹宇新
庄立田
程远刚
杨胜荣
吴永华
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Jilin Petroleum Refco Group Ltd Logging Co
Oil Production Technology Research Institute Of Petrochina Jilin Oilfield Co
JILIN SHUANGLIN PERFORATION EQUIPMENT CO Ltd
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Jilin Petroleum Refco Group Ltd Logging Co
Oil Production Technology Research Institute Of Petrochina Jilin Oilfield Co
JILIN SHUANGLIN PERFORATION EQUIPMENT CO Ltd
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Abstract

油井用高孔密射孔装置,一种石油开采完井作业中使用的射孔装置。其特征是具有固定在射孔枪内的弹架和固定在弹架上的射孔弹组,每个射孔弹组中具有2至3发射孔弹,每个射孔弹组的各个射孔弹按周向均布,每组射孔弹的各个射孔弹的轴线在同一直线或同一平面上,该直线或平面与弹架轴线垂直。该实用新型解决了在射孔装置中因单位长度装弹密度低而进行二次射孔对套管造成伤害的技术问题,成倍地提高单位长度上的装弹密度,降低了作业成本。

Description

油井用高孔密射孔装置
技术领域:
本实用新型属于石油开采完井作业中使用的射孔装置。
背景技术:
在石油勘探和开采作业中,通常先是在含油区块上钻井,将套管放入井中,用水泥灌注套管及井眼周围的环形空间,将套管固定好。然后将射孔弹装在射孔枪内下到井内油层位置。深度校准后,引爆射孔枪中的射孔弹,射孔弹起爆后,在套管、水泥环及周围油层中射出孔道,使井筒与油层联通起来,这样地层中的油气就可以通过这些孔道进入井筒,至此完成了完井作业。
在采油过程中,对于多数构造油气产量和井筒与油层相联接的有效通道数量成正比,即与单位长度的装弹密度成正比。然而,在传统的射孔装置中,由于装配方式的局限,孔密一般很低,通常不超过20孔/米,影响了油气产出量。为了提高射孔孔密,通常采用二次射孔,由于第二次射孔和第一次射孔形成的孔距不均匀,对套管造成了伤害。同时二次射孔还提高了作业成本。
发明内容:
本实用新型提供的一种油井用高孔密射孔装置,具有所述的枪身(4)、弹架(5)和射孔弹组(6),弹架(5)为圆筒形。其特征是每个射孔弹组由2发射孔弹组成,该2发射孔弹同轴,该2发射孔弹可以加工成一体,也可以分体加工,每发射孔弹的口部朝外,各射孔弹组的轴线与弹架轴线垂直;相邻两组射孔弹的轴线相互关系为空间异面直线,且相邻射孔弹组的轴线交角为30度至90度。射孔弹安装固定在弹架(5)上,并沿弹架(5)长度方向依次排布,导爆索从射孔弹组(6)的中间穿过。
本实用新型提供的另一种油井用高孔密射孔装置具有所述的枪身(4)、弹架(5)和射孔弹组(6),弹架(5)为圆筒形,其特征是每个射孔弹组由3发射孔弹组成,该3发射孔弹在周向上均布,该3发射孔弹的轴线均布在与弹架(5)轴线垂直的同一平面上,且该3发射孔弹的长度方向上的中心等分设置在同一圆周上。每个射孔弹组(6)的各个射孔弹的轴线在发射方向上与相邻射孔弹组(6)的各个射孔弹的轴线在发射方向上的最小交角为30度至60度,导爆索从射孔弹组(6)的中间穿过。
由于采取了以上结构,本实用新型成功地解决了传统射孔装置因单位长度内装弹密度低而进行二次射孔对套管造成伤害的技术问题,可以成倍地提高装弹密度,降低作业成本。
附图说明:
图1、油井射孔作业示意图
图2、本实用新型实施例1
图3、图2的A-A剖面图
图4、本实用新型实施例2
图5、图4的A-A剖面图
具体实施方式:
本实用新型由所述的射孔枪(4)、弹架(5)和射孔弹组(6)组成。在进行油井射孔作业时,先将射孔弹组(6)依次安装在弹架(5)上,将导爆索从射孔弹组的中间穿过,然后把装满射孔弹的弹架(5)装入射孔枪(4)中,最后将装配好的射孔枪(4)下到井筒(3)中的油层位置。当深度校准后,可以引爆射孔弹进行射孔作业。射孔弹将井筒(3)、水泥环(2)及含油岩层(1)射出孔道,原油(气)通过孔道汇集到井筒中,然后用抽油机将油抽出,汇入输油管道。
图2是本实用新型实施例1,图3是图2的A-A剖面图。实施例1的结构特征是每个射孔弹组有2发射孔弹,该2发射孔弹同轴,该2发射孔弹的轴线和弹架的轴线垂直,口部向外,装在弹架(5)上,相邻两组射孔弹的轴线交角为30°~90°角,导爆索在射孔弹组(6)的中间穿过。本实施例每米装弹32发
图4是本实用新型实施例2,图5是图4的A-A剖面图。实施例2的结构特征是所述的射孔装置中每个射孔弹组有3发射孔弹,该3发射孔弹在周向上均布,轴线在垂直于弹架轴线的同一平面上,且射孔弹口部向外,安装在弹架(5)上,每个射孔弹组(6)的各个射孔弹的轴线在发射方向上与相邻射孔弹组(6)的各个射孔弹的轴线在发射方向上的最小交角为30度至60度,导爆索在射孔弹组(6)的中间穿过。本实施例每米装弹39~48发。
本实用新型的这种结构提高了装弹密度,避免了二次射孔对套管造成的伤害,大幅度降低了作业成本。

Claims (5)

1、一种油井用高孔密射孔装置,具有固定在射孔枪(4)中的弹架(5),其特征在于:还具有射孔弹组(6),每个射孔弹组(6)中具有2至3发射孔弹,且每发射孔弹的口部朝外,每个射孔弹组(6)的各个射孔弹按周向均布,各个射孔弹组(6)设置在弹架(5)中,且固定在弹架(5)上,并沿弹架(5)的长度方向依次排布,导爆索从各个射孔弹组(6)的中间穿过,且其两端用导爆索固定套固定住。
2、根据权利要求1所述的油井用高孔密射孔装置,其特征在于:弹架(5)的基本形状为圆筒形:每个射孔弹组(6)中的射孔弹有2发,该2发射孔弹的轴线相同,而作为射孔弹组(6)的轴线,各射孔弹组(6)的轴线与弹架(5)的轴线相垂直。
3、根据权利要求2所述的油井用高孔密射孔装置,其特征在于:各相邻射孔弹组(6)的轴线的相互间的关系为空间异面直线、且相邻射孔弹组(6)的轴线的交角为30度至90度。
4、根据权利要求1所述的油井用高孔密射孔装置,其特征在于:弹架(5)的基本形状为圆筒形;每个射孔弹组(6)中的射孔弹有3发,该3发射孔弹的轴线均布在与弹架(5)的轴线相垂直的同一平面上、且该3发射孔弹的长度方向上的中心等分设置在同一圆周上。
5、根据权利要求4所述的油井用高孔密射孔装置,其特征在于:每个射孔弹组(6)的各个射孔弹的轴线在发射方向上与相邻射孔弹组(6)的各个射孔弹的轴线在发射方向上的最小交角为30度至60度。
CN 03201346 2003-01-23 2003-01-23 油井用高孔密射孔装置 Expired - Fee Related CN2648065Y (zh)

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CN101832123A (zh) * 2010-05-21 2010-09-15 中国科学技术大学 一种连续多向聚能射孔弹
US11339632B2 (en) 2018-07-17 2022-05-24 DynaEnergetics Europe GmbH Unibody gun housing, tool string incorporating same, and method of assembly
US11480038B2 (en) 2019-12-17 2022-10-25 DynaEnergetics Europe GmbH Modular perforating gun system
US11499401B2 (en) 2021-02-04 2022-11-15 DynaEnergetics Europe GmbH Perforating gun assembly with performance optimized shaped charge load
US11542792B2 (en) 2013-07-18 2023-01-03 DynaEnergetics Europe GmbH Tandem seal adapter for use with a wellbore tool, and wellbore tool string including a tandem seal adapter
US11661824B2 (en) 2018-05-31 2023-05-30 DynaEnergetics Europe GmbH Autonomous perforating drone
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US11753909B2 (en) 2018-04-06 2023-09-12 DynaEnergetics Europe GmbH Perforating gun system and method of use
US11795791B2 (en) 2021-02-04 2023-10-24 DynaEnergetics Europe GmbH Perforating gun assembly with performance optimized shaped charge load
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CN101832123A (zh) * 2010-05-21 2010-09-15 中国科学技术大学 一种连续多向聚能射孔弹
US12078038B2 (en) 2013-07-18 2024-09-03 DynaEnergetics Europe GmbH Perforating gun orientation system
US11542792B2 (en) 2013-07-18 2023-01-03 DynaEnergetics Europe GmbH Tandem seal adapter for use with a wellbore tool, and wellbore tool string including a tandem seal adapter
US11661823B2 (en) 2013-07-18 2023-05-30 DynaEnergetics Europe GmbH Perforating gun assembly and wellbore tool string with tandem seal adapter
US11753909B2 (en) 2018-04-06 2023-09-12 DynaEnergetics Europe GmbH Perforating gun system and method of use
US11661824B2 (en) 2018-05-31 2023-05-30 DynaEnergetics Europe GmbH Autonomous perforating drone
US11339632B2 (en) 2018-07-17 2022-05-24 DynaEnergetics Europe GmbH Unibody gun housing, tool string incorporating same, and method of assembly
US11525344B2 (en) 2018-07-17 2022-12-13 DynaEnergetics Europe GmbH Perforating gun module with monolithic shaped charge positioning device
US11773698B2 (en) 2018-07-17 2023-10-03 DynaEnergetics Europe GmbH Shaped charge holder and perforating gun
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US11795791B2 (en) 2021-02-04 2023-10-24 DynaEnergetics Europe GmbH Perforating gun assembly with performance optimized shaped charge load
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