CN101338663A - Horizontal well mechanical staged fracturing blocking-proof process pipe column - Google Patents

Horizontal well mechanical staged fracturing blocking-proof process pipe column Download PDF

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Publication number
CN101338663A
CN101338663A CN 200810136897 CN200810136897A CN101338663A CN 101338663 A CN101338663 A CN 101338663A CN 200810136897 CN200810136897 CN 200810136897 CN 200810136897 A CN200810136897 A CN 200810136897A CN 101338663 A CN101338663 A CN 101338663A
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CN
China
Prior art keywords
sand
centralizer
packer
column jacket
horizontal well
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CN 200810136897
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Chinese (zh)
Inventor
合 刘
张书进
徐德奎
王金友
裴晓含
谢建华
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大庆油田有限责任公司
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Priority to CN 200810136897 priority Critical patent/CN101338663A/en
Publication of CN101338663A publication Critical patent/CN101338663A/en

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Abstract

The present invention belongs to a technical column jacket which is used for preventing sand sticking in oil-water well horizontal well pressure crack. The technical column jacket mainly solves the problem of column jacket sand sticking caused by small oil casing annular area at the underside and sand deposit under a sand nozzle during the pressure crack process of a low-permeability oil pool horizontal well. The technical column jacket mainly consists of an oil pipe (1), a safe joint (2), a centralizer (3), a water power anchor (4), a packer (5), a pressure guide sand sprayer (6) and a guide plug (7), wherein, the lower end of the oil pipe (1) is orderly connected with the safe joint (2), the centralizer (3), the water power anchor (4), the packer (5), the centralizer (3), the pressure guide sand sprayer (6) and the guide plug (7). The technical column jacket is mainly used in the oilfield horizontal well pressure crack and has the advantages of preventing construction column jacket sand sticking, improving the safety and the stability of the column jacket, etc.

Description

水平井机械分段压裂防卡工艺管柱 Fracturing horizontal wells mechanical card string segment

技术领域:本发明属于一种用于油水井水平井压裂防砂卡的工艺管柱。 Technical Field: The present invention belongs to the tubing string one kind of Oil Well Fracturing horizontal wells for sand card.

背景技术:随着油气田开发的不断深入和水平井技术的不断提高,低孔低渗油藏逐渐受到重视,为了提高采收率,几乎所有的低渗油藏水平井都需压裂投产;以前水平井压裂一般釆用笼统限流分段压裂、机械封隔器与可捞桥塞进行分段压裂、水力喷射分段压裂。 BACKGROUND: With the continuous improvement of oil and gas field development and deepening of horizontal well technology, low porosity and low permeability reservoir gradually be taken seriously, in order to improve oil recovery, almost all of the low permeability reservoir fracturing horizontal wells are to be put into operation; previous fracturing horizontal wells generally preclude the use of staged fracturing limiting general, mechanical packers and bridge plugs may be segmented fishing fracturing, hydraulic fracturing jet segment. 这些压裂技术施工时间长,分段少,成本高。 These construction techniques fracturing long time, less segment, the high cost. 针对这些情况,研制了水平井压裂防卡工艺管柱,它可以实现水平井分段压裂,提高了效率,大大降低了施工成本、施工管柱砂卡的风险。 For these conditions, the development of horizontal well fracturing anti-card string, it can achieve staged fracturing of horizontal wells, improve efficiency, greatly reduce the construction costs, construction risks string of sand cards. 使压裂管柱在施工过程中安全可靠。 The fracturing string safe and reliable in the construction process.

发明内容:本发明的目的是提供了一种即能在水平井顺利下入,压裂过程防止砂卡,又可以用来实现水平井分段压裂的水平井机械分段压裂防卡工艺管柱。 SUMMARY OF THE INVENTION: The purpose of the present invention, i.e. to provide a smooth run into the well, to prevent fracturing sand card, and can be used to achieve the mechanical segment Fracturing horizontal wells card staged fracturing of horizontal wells column.

本发明主要由油管、安全接头、扶正器、水力锚、封隔器、 导压喷砂器及导向丝堵组成;其中油管下端依次连接安全接头、 扶正器、水力锚、封隔器、扶正器、导压喷砂器、封隔器及导向丝堵。 The present invention is mainly composed of tubing, safety joint, centralizer, hydraulic anchor packer, sand blasting and the pressure guiding guidewire blocking composition; wherein the lower end of the tubing sequentially connected safety joint, centralizer, hydraulic anchor packer centralizer , pilot pressure sandblasting, packer plug and a guide wire.

扶正器与水力锚之间有一根油管;扶正器与导压喷砂器之间由油管连接;封隔器为膨胀式K344型。 Between stabilizer and a hydraulic anchor tubing; between the centralizer and the pilot pressure connected by a blast pipe; inflatable packer is a type K344.

本发明与已有技术相比具有以下优点: Prior art and the present invention has the following advantages:

利用封隔器及配套工具可对欲处理层位强制分段,通过导压喷砂器的节流压差坐封压裂封隔器,采取上提的方式, 一趟管柱可完成各层段的压裂。 Using a packer and associated tool to force the segment to be treated horizon, fracturing packer packer pressure guide by sand blasting throttle pressure, taken on the manner mentioned, the layers can be accomplished trip string fracturing segment. 导压喷砂器的喷砂口距右侧封隔器的胶简端面距离短,减少了封隔器上端的沉砂,安全接头釆用液压丢手, Blasting sand blast pilot pressure port from the right side of the plastic profile packer end surface a short distance, the reduced upper end of the sump packer, hydraulic safety joint preclude lost hand,

提高了压裂工艺的安全性能。 Improve the safety performance of the fracturing process. 该工艺结构简单,封隔器下端为活动端,其承压高,为水平井实施分段改造提供了手段。 The process is simple configuration, the lower end of the packer movable end, its high pressure, provides a means for the transformation of segmented horizontal wells embodiment.

附图说明:图1为本发明结构简图; BRIEF DESCRIPTION OF DRAWINGS: Figure 1 structure diagram of the present invention;

具体实施方式:本发明主要由油管1、安全接头2、扶正器3、 水力锚4、封隔器5、导压喷砂器6及导向丝堵7组成;其中油管1下端依次连接安全接头2、扶正器3、水力锚4、封隔器5、扶正器3、导压喷砂器6、封隔器5及导向丝堵7。 DETAILED DESCRIPTION: The present invention is mainly composed of a tubing, safety joints 2, centralizer 3, 4 hydraulic anchor packer 5, 6 and pressure guiding sand plugs guide 7; wherein a lower end of the tubing 2 are sequentially connected safety joint centralizer 3, 4 hydraulic anchor packer 5, centralizer 3, pressing guide 6 sandblasting, packer 5 and the guide plugs 7.

扶正器3与水力锚4之间有一根油管1;扶正器3与导压喷砂器6之间由油管1连接;封隔器5为膨胀式K344型。 3 has a centralizer tubing between 1 and 4 hydraulic anchor; 3 centralizer 6 is connected between the pilot pressure from the sandblasting pipe 1; 5 is a packer expansion type K344.

安全接头2釆用液压丢手,压裂后一旦上提负荷较大,卡管柱时,井口投d)52隨的钢球憋压打开内滑套,使安全接头2的上、 下接头分离,从而起出上部油管1。 Safety connector 2 lost preclude hydraulic hand, once put on the fracture load is large, a card column, wellhead cast d) 52 with the ball hold open the inner pressure sleeve, so that the safety joint 2, the separation of the joint to 1 from the upper portion of the tubing. 扶正器3在起下管柱过程中使该工具居中,防止封隔器5受损,在水平段可以使封隔器5更好的居中坐封。 3 centralizer from the column process, to the tool center, to prevent damage to the packer 5, in the horizontal section 5 can be made better packer center packer. 封隔器5具有保护目的层以上套管,且分隔油层的作用。 The packer 5 above object layer serves as a protective sleeve, and the separated oil layer. 导压喷砂器6可以产生节流压差使其左右侧的封隔器5 同时坐封,同时也是压裂液进入目的层的通道,在砂卡时,还可作为反洗井通道。 6 pilot pressure sand blasting may generate a throttle pressure so that the left and right sides of the packer while the packer 5, but also the purpose of the fracturing fluid into the channel layer, when the sand in the card, but also as the backwashing channel wells. 在管柱起下过程中,导向丝堵7起到导向的作用。 In the process from the lower column, the guide plugs 7 plays the role of a guide.

现场施工时,当油管携带该管柱下到套管内预定位置后,坐好井口,然后地面注液,导压喷砂器6产生节流压差使左右侧的封隔器5同时坐封,实现分隔油层段的目的,压裂液经导压喷砂器6的侧孔进入到地层中,压开地层。 When the construction site, when the inner sleeve into the pipe carrying the string at the predetermined position, sit wellhead injection ground, the pressure guiding sandblasting 6 then generates the throttle pressure differential packer 5 while the left and right sides of the packer, object is achieved reservoir section partition, a fracturing fluid through the side holes 6 pilot pressure blasted into the formation, the formation pressure to open. 压裂完一个层段后上提管柱,使该管柱行进到另一层段进行压裂,这样一趟管柱就可完成各层段的压裂。 After completion of a fracturing interval the lifting column so that the column travels to another interval fracturing, and fracturing trip string can be completed each interval.

Claims (4)

1、水平井机械分段压裂防卡工艺管柱,其特征在于:它主要由油管(1)、安全接头(2)、扶正器(3)、水力锚(4)、封隔器(5)、导压喷砂器(6)及导向丝堵(7)组成;其中油管(1)下端依次连接安全接头(2)、扶正器(3)、水力锚(4)、封隔器(5)、扶正器(3)、导压喷砂器(6)、封隔器(5)及导向丝堵(7)。 1, the mechanical segment Fracturing horizontal wells card tubing string, characterized in that: it is mainly composed of tubing (1), safety joint (2), the centralizer (3), hydraulic anchor (4), a packer (5 ), blasting pressure guide (6) and a guide plug (7); wherein the tubing (1) are sequentially connected to the lower end of safety joint (2), the centralizer (3), hydraulic anchor (4), a packer (5 ), centralizer (3), sand blasting pressure guiding (6), a packer (5) and a guide plug (7).
2、 根据权利要求1所述的水平井机械分段压裂防卡工艺管柱,其特征在于:扶正器(3)与水力锚(4)之间有一根油管(1)。 2, the mechanical segment Fracturing horizontal wells card tubing string according to claim 1, wherein: there is a tube (1) between the centralizer (3) and a hydraulic anchor (4).
3、 根据权利要求1所述的水平井机械分段压裂防卡工艺管柱,其特征在于:扶正器(3)与导压喷砂器(6)之间由油管(1)连接。 3, according to the mechanical segment Fracturing horizontal wells card tubing string according to claim 1, characterized in that: between the centralizer (3) and the blast pressure guiding (6) is connected by a tube (1).
4、 根据权利要求1所述的水平井机械分段压裂防卡工艺管柱,其特征在于:封隔器(5)为膨胀式K344型。 4. The machine as claimed segments Fracturing horizontal wells card tubing string according to claim 1, wherein: a packer (5) for the expansion type K344.
CN 200810136897 2008-08-07 2008-08-07 Horizontal well mechanical staged fracturing blocking-proof process pipe column CN101338663A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102174880A (en) * 2011-02-28 2011-09-07 中国石油集团川庆钻探工程有限公司 Releasing method applicable to packer layered sand fracturing string
CN101560875B (en) 2009-05-18 2012-07-04 中国石油辽河油田钻采工艺研究院 Multifunctional horizontal well completion tubular pile device
CN102758599A (en) * 2012-08-03 2012-10-31 中国海洋石油总公司 Separate mining and combined mining pipe column for sieve pipe well completion horizontal well and mining method thereof
CN102852504A (en) * 2012-09-13 2013-01-02 中国石油天然气股份有限公司 Immobile pipe column multi-layer fracturing tool string for vertical shaft
RU2493353C1 (en) * 2012-10-19 2013-09-20 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Packer assembly
CN104213895A (en) * 2013-06-05 2014-12-17 中国石油天然气股份有限公司 Hydraulic sand jet perforation, fracture and sand filling integrated technological method
CN105178905A (en) * 2015-09-11 2015-12-23 中国石油天然气股份有限公司 Process tubing string and method for integrated setting and channeling testing of bridge plugs of horizontal wells
CN105221094A (en) * 2015-09-23 2016-01-06 中国石油天然气股份有限公司 Horizontal well double-sealing and single-stick blowout control technology
CN105735916A (en) * 2016-03-25 2016-07-06 西南石油大学 Crawling horizontal well drill string feed-in tool
CN105781504A (en) * 2016-03-07 2016-07-20 中国石油天然气股份有限公司 Pressure testing method for segmented oil pool and segmented trial-squeezing tubing string
CN106481324A (en) * 2015-08-25 2017-03-08 中国石油化工股份有限公司 Hydraulically controlled self-deblocking staged fracturing string
US9708889B2 (en) 2011-06-22 2017-07-18 China Petroleum & Chemical Corporation Sleeve fracturing assembly, device using the same and method for using the same

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101560875B (en) 2009-05-18 2012-07-04 中国石油辽河油田钻采工艺研究院 Multifunctional horizontal well completion tubular pile device
CN102174880B (en) 2011-02-28 2013-09-11 中国石油集团川庆钻探工程有限公司 Releasing method applicable to packer layered sand fracturing string
CN102174880A (en) * 2011-02-28 2011-09-07 中国石油集团川庆钻探工程有限公司 Releasing method applicable to packer layered sand fracturing string
US9708889B2 (en) 2011-06-22 2017-07-18 China Petroleum & Chemical Corporation Sleeve fracturing assembly, device using the same and method for using the same
CN102758599A (en) * 2012-08-03 2012-10-31 中国海洋石油总公司 Separate mining and combined mining pipe column for sieve pipe well completion horizontal well and mining method thereof
CN102852504A (en) * 2012-09-13 2013-01-02 中国石油天然气股份有限公司 Immobile pipe column multi-layer fracturing tool string for vertical shaft
RU2493353C1 (en) * 2012-10-19 2013-09-20 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Packer assembly
CN104213895A (en) * 2013-06-05 2014-12-17 中国石油天然气股份有限公司 Hydraulic sand jet perforation, fracture and sand filling integrated technological method
CN104213895B (en) * 2013-06-05 2018-02-02 中国石油天然气股份有限公司 Hydraulic fracturing abrasive perforating and filling with sand as a process for
CN106481324A (en) * 2015-08-25 2017-03-08 中国石油化工股份有限公司 Hydraulically controlled self-deblocking staged fracturing string
CN105178905A (en) * 2015-09-11 2015-12-23 中国石油天然气股份有限公司 Process tubing string and method for integrated setting and channeling testing of bridge plugs of horizontal wells
CN105221094A (en) * 2015-09-23 2016-01-06 中国石油天然气股份有限公司 Horizontal well double-sealing and single-stick blowout control technology
CN105781504A (en) * 2016-03-07 2016-07-20 中国石油天然气股份有限公司 Pressure testing method for segmented oil pool and segmented trial-squeezing tubing string
CN105781504B (en) * 2016-03-07 2019-06-11 中国石油天然气股份有限公司 A kind of segmentation reservoir pressure test method
CN105735916A (en) * 2016-03-25 2016-07-06 西南石油大学 Crawling horizontal well drill string feed-in tool

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