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CN101566056B - Body-free coaxial following synergistic perforator - Google Patents

Body-free coaxial following synergistic perforator Download PDF

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Publication number
CN101566056B
CN101566056B CN 200910022819 CN200910022819A CN101566056B CN 101566056 B CN101566056 B CN 101566056B CN 200910022819 CN200910022819 CN 200910022819 CN 200910022819 A CN200910022819 A CN 200910022819A CN 101566056 B CN101566056 B CN 101566056B
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powder
fracturing
free
body
perforator
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CN 200910022819
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Chinese (zh)
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CN101566056A (en )
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戴鹏
段萍
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西安瑞通能源科技有限公司
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Abstract

The invention discloses a body-free coaxial following synergistic perforator, which comprises a body-free perforator firing mount and a body-free perforating bullet arranged on the firing mount, wherein the body-free perforating bullet comprises a cartridge case, a powder-type cover and a high explosive, the front end outer wall of the cartridge case is provided with an initiation half slot and apressure wire, the front end inner wall of the cartridge case is provided with a booster hole, the back end of the cartridge case is provided with a fracturing powder box airtightly, and special fracturing powder is poured in the fracturing powder box and is distributed annularly along the inner wall of the fracturing powder box, wherein the special fracturing powder is prepared by evenly mixing ammonium permanganate of which the weight percentage is between 50 and 80 percent and aluminum powder of which the weight percentage is between 20 and 50 percent. The body-free coaxial following synergistic perforator has a simple structure and reliable mounting, the special fracturing powder is initiated and performs pulse fracturing on stratums directly while the powder-type cover forms high-speed jet flow to perform perforation, and the fracturing effect of the perforation is good, thus the body-free coaxial following synergistic perforator is particularly suitable for operations of high-density and low-permeability stratums.

Description

无枪身同轴随进式射孔器 Into the gun body coaxially with no perforator formula

技术领域 FIELD

[0001] 本发明涉及一种油井射孔压裂复合装置,尤其是涉及一种无枪身同轴随进式射孔 [0001] The present invention relates to a perforating oil well fracturing composite device, in particular it relates to an intake perforating gun body coaxially with

O O

背景技术 Background technique

[0002] 现有的射孔压裂复合器均为有枪身设计,在使用其进行油井射孔压裂作业时,复合药在枪内起爆并将射孔枪预制泄压孔压开,对井筒产生压力,井压升高再对地层产生压力,数据统计,射孔压裂后的水泥环深度为800mm左右,压裂裂缝为2500mm左右,所以整个做功过程能量损耗大,射孔压裂效果一般;且由于枪身的内部空间狭小,整个装置的设计容易受到限制。 [0002] Fracturing is a conventional perforating gun body are designed to have, when using it for perforating oil well fracturing operation, the drug compound in the perforating gun and the gun detonation preform open pore pressure relief of a pressure wellbore, the well pressure is increased regenerate formation pressure, statistics, cement perforation depth after fracture is about 800mm, fracture of about 2500mm, so that the entire work process large energy loss, fracturing effect perforation Usually; and due to the narrow inner space of the gun body, the design of the entire apparatus easily restricted. 而现有的无枪身射孔器只能用于单纯的油井射孔作业,不能在射孔的同时对地层进行压裂。 The existing body - free perforator only for oil well perforating operations alone, can not simultaneously fracturing the formation perforation.

发明内容 SUMMARY

[0003] 本发明所要解决的技术问题在于针对上述现有技术中的不足,提供一种无枪身同轴随进式射孔器,其结构简单,安装可靠,能在药型罩形成高速射流进行射孔的瞬间,专用压裂药起爆并直接对地层进行脉冲压裂,射孔压裂效果好。 [0003] The present invention solves the technical problem that the prior art in view of the above deficiencies, to provide a free-type gun body coaxially with the perforator into the structure is simple, reliable installation, can be formed in the high velocity jet Liner perforating a moment, and with a cartridge dedicated fracturing of the formation fracturing direct pulse, good perforating fracturing effect.

[0004] 为解决上述技术问题,本发明采用的技术方案是:一种无枪身同轴随进式射孔器, 包括无枪身射孔器弹架和安装在所述无枪身射孔器弹架上的无枪身射孔弹,所述无枪身射孔弹包括弹壳、设置在弹壳内部的药型罩以及压装在弹壳和药型罩之间的高能炸药,所述弹壳的前端外壁上设置有用于放置导爆索的起爆半圆槽和用于固定该导爆索的压丝,所述弹壳的前端内壁上设置有充满高能炸药的传爆孔,其特征在于:所述弹壳的后端密封安装有碗形压裂药盒,其中,在弹壳的后端外侧设置有环形凸台,所述压裂药盒的前部紧密套装在所述环形凸台的外侧,所述压裂药盒内浇注有专用压裂药,所述专用压裂药沿压裂药盒的内壁环形分布,并在压裂药盒的内腔中部形成与所述药型罩内腔相通的射流通道, 所述弹壳、药型罩和压裂药盒的中心线位于同一直 [0004] To solve the above technical problem, the technical solution adopted by the invention is: a non-perforating gun body coaxially with the feed, comprising body - free perforator perforating charge carrier and is mounted in the body - free an elastic body - free shelf perforating charge, said projectile comprising a shell without perforating gun body, disposed inside the shell and the high explosive shaped charge liner press fitted between the shell and the shaped charge liner, the cartridge case the front end of the outer wall is provided for placing detonating cord initiation semicircular grooves for fixing the wires and the pressing detonating cord is provided with a hole filled with high explosive booster of the front end wall of the shell, characterized in that: said shell sealing the rear end is attached to bowl fracturing cartridge, wherein the rear end of the outer shell is provided with an annular projection, the front portion of the cartridge fracturing the outer package tight annular boss, the pressure pouring a dedicated internal crack fracture drug cartridge, said cartridge fracturing dedicated fracturing along the inner wall of the drug distribution ring, and Liners formed with the lumen in communication with the lumen of the central jet passage fracturing kit the shell, liner and fracturing centerline drug cartridge has been located on the same 上;所述专用压裂药由重量百分比为50-80 %的高锰酸铵和重量百分比为20-50 %的铝粉均勻混合制成。 ; Said dedicated fracturing agent is prepared by mixing a 50-80% by weight of ammonium permanganate and 20 to 50% by weight of aluminum uniformly.

[0005] 所述环形凸台的外侧表面上开有环形凹槽,所述环形凹槽中设置有密封圈。 [0005] The open annular groove on the outer surface of the annular projection, the annular groove is provided with a sealing ring.

[0006] 所述密封圈由氟橡胶制成。 [0006] The sealing ring is made of Viton.

[0007] 所述无枪身射孔弹通过弹壳和压裂药盒安装在无枪身射孔器弹架上。 [0007] None of the gun body through the shell and the shaped charge mounted in the cartridge body - free fracturing perforator bomb rack.

[0008] 本发明与现有技术相比具有以下优点:1、本发明结构简单,现场安装使用方便,且安全可靠,不易发生事故。 [0008] The present invention as compared with the prior art has the following advantages: 1, the present invention is simple in structure, easy to install on-site, reliable and safe, less prone to accidents. 2、本发明的做功过程中有效能量损耗小,射孔压裂效果好,特别适用于高致密、低渗透地层的作业。 2, the work process of the present invention effective energy loss is small, good perforating fracturing effect, especially for high density, low permeability formation job. 弹壳后端设置有压裂药盒,在压裂药盒内部浇注有压裂效果好且成本小的专用压裂药,所以在导爆索作用下,高能炸药起爆(微秒级)并使药型罩形成高速射流的瞬间,专用压裂药起爆(毫秒级)并直接形成压裂体,压裂体同轴随进进入地层并直接对地层进行脉冲压裂,经实验证明,本发明射孔压裂后的水泥环深度能达到IOOOmm以上,压裂裂缝为3000mm左右,效果优于现有有枪身射孔压裂复合器。 Rear shell is provided with a cartridge fracturing, fracturing cast fracturing effect inside the cartridge and good low-budget dedicated fracturing agent, so in effect detonating cord, detonating high explosives (microseconds) and drugs liner instantaneous high velocity jets are formed, dedicated, fracturing detonating (milliseconds) is formed directly, fracturing the fracturing member coaxially with the feed into the formation and fracturing of the formation direct pulse, the experiments show that the present invention is perforating cement depth after fracturing to achieve IOOOmm above, fractures of about 3000mm, better than with a conventional perforating gun body fracturing multiplexer. [0009] 下面通过附图和实施例,对本发明的技术方案做进一步的详细描述。 [0009] The following drawings and embodiments, detailed description of the further aspect of the present invention. 附图说明 BRIEF DESCRIPTION

[0010] 图1为本发明的结构示意图。 [0010] FIG. 1 is a schematic structural diagram of the present invention.

[0011] 附图标记说明: [0011] REFERENCE NUMERALS:

具体实施方式 detailed description

[0015] 如图1所示,本发明包括无枪身射孔器弹架2和安装在无枪身射孔器弹架2上的无枪身射孔弹,无枪身射孔弹包括弹壳3、药型罩5和高能炸药4,药型罩5设置在弹壳3的内部并用来封装高能炸药4,高能炸药4通过压药装置压装在弹壳3和药型罩5之间。 [0015] As shown in FIG. 1, the present invention comprises a perforator body - free body - free charge carrier 2 and mounted on a shaped charge perforator body - free charge carrier 2, the shaped charge includes a shell body - free 3, liner 5 and 4 high explosives, liner 5 disposed inside the shell 3 and 4 for encapsulating high explosive, high explosives metering device 4 by press press-fitted between the shell 3 and liner 5. 弹壳3的前端外壁上设置有用于放置导爆索的起爆半圆槽和用于固定该导爆索的压丝1,与所述起爆半圆槽相对在弹壳3的前端内壁上设置有充满高能炸药4的传爆孔。 The front end wall of the outer shell 3 is provided for placing detonating cord initiation semicircular grooves for fixing the wires and the pressing detonating cord 1, the initiation filled with a semi-circular groove disposed opposite the high explosive shell 4 on the inner wall of the front end 3 the booster hole. 弹壳3的后端密封安装有碗形压裂药盒8,其中,在弹壳3的后端外侧设置有用于安装压裂药盒8的环形凸台,压裂药盒8的前部紧密套装在所述环形凸台的外侧。 Sealing the rear end of the shell 3 is attached to the cartridge fracturing bowl 8, wherein the rear end of the outer shell 3 is provided with a kit for mounting fracturing annular boss 8, the front portion 8 of the cartridge fracturing tightly sleeved the outer annular bosses. 压裂药盒8的内壁上浇注有专用压裂药7,即专用压裂药7沿压裂药盒8的内壁呈环状分布,并在压裂药盒8的内腔中部形成与药型罩5内腔相通的射流通道9,弹壳3、药型罩5和压裂药盒8的中心线位于同一直线上。 Pouring a dedicated fracturing the fracturing agent on the inner wall 8 of the cartridge 7, i.e., fracturing specific drug cartridge 7 along the inner wall 8 of fracturing annular distribution, drug type and formed in the central lumen 8 of the cartridge fracturing 5 cover fluidic channel 9 communicating with the lumen, the cartridge case 3, liner 5 and 8 located on the centerline of the cartridge fracturing the same straight line. 其中,无枪身射孔器弹架2为粉碎性弹架,帽形弹壳3由45号钢加工而成,圆锥形药型罩5由金属粉末制成,高能炸药4为聚黑-16,压裂药盒8由20号钢加工而成。 Wherein the body - free perforator charge carrier of the charge carrier 2 is comminuted, processed by a hat-shaped shell 3 made of steel 45, a conical shaped charge liner 5 made of a metal powder, polyethylene black high explosives 4 -16, 8 machined from fracturing cartridge 20 steel.

[0016] 专用压裂药7由重量百分比为50-80%的高锰酸铵与重量百分比为20-50%的铝粉均勻混合制成后,再浇注在压裂药盒8内。 After uniform aluminum [0016] 7-specific fracturing agent, by weight percent of 50-80% ammonium permanganate and 20 to 50% by weight of the blend, and then cast in the cartridge 8 fracturing.

[0017] 实施例1 [0017] Example 1

[0018] 专用压裂药7由重量百分比为50%的高锰酸铵与重量百分比为50%的铝粉均勻混合制成。 Aluminum homogeneous [0018] 7-specific fracturing agent, by weight percent 50% ammonium permanganate and 50% by weight of the blend.

[0019] 实施例2 [0019] Example 2

[0020] 专用压裂药7由重量百分比为60%的高锰酸铵与重量百分比为40%的铝粉均勻混合制成。 Aluminum homogeneous [0020] 7-specific fracturing agent, by weight percent of 60% ammonium permanganate and 40% by weight of the blend.

[0021] 实施例3 [0021] Example 3

[0022] 专用压裂药7由重量百分比为80%的高锰酸铵与重量百分比为20%的铝粉均勻混合制成。 [0022] 7-specific fracturing agent, by weight percent 80% ammonium permanganate and 20% by weight of aluminum powder blend uniformity.

[0023] 为保证弹壳3和压裂药盒8之间的密封效果,在弹壳3的环形凸台的外侧表面上开有环形凹槽,环形凹槽中设置有密封圈6。 [0023] In order to ensure the sealing effect between the shell 3 and the cartridge 8 fracturing open annular groove on the outside surface of the annular projection of the shell 3, annular groove 6 is provided with a sealing ring. 在本实施方式中,密封圈6由氟橡胶制成。 In the present embodiment, the seal ring 6 is made of fluororubber.

[0024] 无枪身射孔弹通过弹壳3和压裂药盒8安装在无枪身射孔器弹架2的安装孔上。 [0024] No shaped charge gun body by fracturing cartridge shell 3 and 8 are mounted on the mounting hole perforator body - free charge carrier 2.

[0025] 本发明无枪身同轴随进式射孔器的工作过程为:首先,将导爆索放置在起爆半圆槽内,并通过压丝1将导爆索固定;引爆导爆索,导爆索起爆并击穿弹壳3上位于起爆半圆槽和传爆孔之间的前端壁,高能炸药4起爆并使药型罩5形成高速射流,该高速射流穿透套管、水泥环后,进入地层并形成孔道;在高能炸药4起爆的瞬间,专用压裂药7起爆并形成压 [0025] None of the gun body coaxially with the present invention during operation into the perforating gun is of formula: First, the detonating cord placed initiation semicircular groove, and by pressing the wire 1 is fixed to the detonating cord; detonating the detonating cord, located on the detonating cord and detonator shell breakdown end wall 3 between the semicircular groove and the detonating booster hole, and detonating high explosives 4 liner 5 a high velocity jet, the high-speed jet penetrates the casing, the cement, and forming a bore into the formation; 4 instantaneously detonating high explosives, drugs specific fracture initiation and 7 form a press

[0012] 1-压丝; [0012] 1- voltage wire;

[0013] 4-高能炸药; [0013] 4- high explosives;

[0014] 7-专用压裂药; [0014] 7-specific drug fracturing;

2-无枪身射孔器弹架; 5-药型罩; 8-压裂药盒; 2- body - free perforator charge carrier; 5- Liner; 8- fracturing kit;

3-弹壳; 6-密封圈; 9-射流通道。 3- shell; 6- ring; 9- fluidic channel. 裂体,继而压裂体顺着射孔形成的孔道同轴随进进入地层进行爆燃压裂。 Body split, and then fracturing the body along the perforation tunnel formed coaxially with the inlet into the formation for fracturing deflagration. [0026] 以上所述,仅是本发明的较佳实施例,并非对本发明作任何限制,凡是根据本发明技术实质对以上实施例所作的任何简单修改、变更以及等效结构变换,均仍属于本发明技术方案的保护范围内。 [0026] The above, only the preferred embodiment of the present invention, the present invention is not any limitation, any simple modification according to any of the technical spirit of the present invention made of the above embodiment of the embodiment, changes and equivalents structural transformations they fall within the scope of the technical solution of the present invention.

Claims (4)

1. 一种无枪身同轴随进式射孔器,包括无枪身射孔器弹架(¾和安装在所述无枪身射孔器弹架(¾上的无枪身射孔弹,所述无枪身射孔弹包括弹壳(3)、设置在弹壳(3)内部的药型罩(5)以及压装在弹壳(¾和药型罩(¾之间的高能炸药G),所述弹壳(¾的前端外壁上设置有用于放置导爆索的起爆半圆槽和用于固定该导爆索的压丝(1),所述弹壳(3) 的前端内壁上设置有充满高能炸药(4)的传爆孔,其特征在于:所述弹壳C3)的后端密封安装有碗形压裂药盒(8),其中,在弹壳C3)的后端外侧设置有环形凸台,所述压裂药盒(8)的前部紧密套装在所述环形凸台的外侧,所述压裂药盒(8)内浇注有专用压裂药(7),所述专用压裂药(7)沿压裂药盒(8)的内壁环形分布,并在压裂药盒(8)的内腔中部形成与所述药型罩(5)内腔相通的射流通道(9),所述弹壳(3)、药型罩 1. A non-coaxial with the intake perforating gun body, comprising body - free perforator charge carrier (¾ and mounted in the body - free perforator charge carrier (¾ without perforating charge on Barrel the body - free shell comprises a shaped charge (3), disposed on shell (3) inside the liner (5) and pressed onto the cartridge case (¾ and high explosive shaped charge liner between ¾ G (), is provided on the front end wall of the shell (the outer wall of the front end is provided with a ¾ semicircular groove disposed for detonating the detonating cord and detonating cord for fixing the wire press (1), the shell (3) is filled with a high explosive (4) a booster aperture, wherein: said shell C3) is attached to the rear end of the seal cartridge fracturing bowl (8), wherein the rear end of the outer shell is provided C3) with an annular projection, the fracturing said cartridge front portion (8) is closely nested outside the annular boss, the cartridge fracturing the fracturing dedicated casting agents (7) (8), the dedicated fracturing agent (7 ) along the inner wall of the annular fracturing kit (8) distribution, and (8) forming the central lumen of the shaped charge liner (5) communicating with the lumen of the fluidic channel (9), said cartridge shell fracturing (3), liner 5)和压裂药盒(8)的中心线位于同一直线上;所述专用压裂药(7)由重量百分比为50-80%的高锰酸铵和重量百分比为20-50%的铝粉均勻混合制成。 5) and fracturing kit (8) of the center line on the same line; the dedicated fracturing agent (7) consists of 50-80% by weight of ammonium permanganate and 20 to 50% by weight of aluminum a uniform powder blend.
2.按照权利要求1所述的无枪身同轴随进式射孔器,其特征在于:所述环形凸台的外侧表面上开有环形凹槽,所述环形凹槽中设置有密封圈(6)。 2. Barrel according to claim 1 without coaxially with the feed type perforator, comprising: an annular groove open on the outer surface of the annular projection, the annular groove is provided with a sealing ring (6).
3.按照权利要求2所述的无枪身同轴随进式射孔器,其特征在于:所述密封圈(6)由氟橡胶制成。 3. The body - free according to claim 2 coaxially with the feed perforator, characterized in that: the sealing ring (6) is made of fluororubber.
4.按照权利要求1或2所述的无枪身同轴随进式射孔器,其特征在于:所述无枪身射孔弹通过弹壳(¾和压裂药盒(8)安装在无枪身射孔器弹架(¾上。 4. The gun body or not according to claim 12 coaxially with the intake perforator, characterized in that: said non perforating gun body by a bomb shell (¾ and fracturing cartridge (8) installed in the absence Barrel perforator charge carrier (the ¾.
CN 200910022819 2009-06-04 2009-06-04 Body-free coaxial following synergistic perforator CN101566056B (en)

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CN102432405B (en) * 2011-07-26 2013-08-21 国营红林机械厂 Low density explosive and preparation method thereof
CN102493792B (en) * 2011-12-23 2015-04-22 甘肃省化工研究院 Energetic perforating bullet holder for oil and gas well
CN104169521B (en) * 2013-04-27 2016-12-07 西安瑞通能源科技有限公司 A coaxial with the perforator charge into and elimination from the compact strip Perforation
CN105041273A (en) * 2015-06-25 2015-11-11 西安物华巨能爆破器材有限责任公司 External directional, orientation and perforation-angle-fixed multistage pulse enhanced-perforator

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US5148868A (en) 1991-08-12 1992-09-22 Christian J B Method and apparatus for perforating tubing
CN1129276A (en) 1995-02-14 1996-08-21 史慧生 Perforation and fracturing device for oil well
CN201358768Y (en) 2009-03-04 2009-12-09 西安瑞通能源科技有限公司 Retrievable coaxial simultaneous entry type enhanced perforator

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US5148868A (en) 1991-08-12 1992-09-22 Christian J B Method and apparatus for perforating tubing
CN1129276A (en) 1995-02-14 1996-08-21 史慧生 Perforation and fracturing device for oil well
CN201358768Y (en) 2009-03-04 2009-12-09 西安瑞通能源科技有限公司 Retrievable coaxial simultaneous entry type enhanced perforator

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