WO2019085472A1 - 免钻免捞固完井一体化管柱及其应用 - Google Patents

免钻免捞固完井一体化管柱及其应用 Download PDF

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Publication number
WO2019085472A1
WO2019085472A1 PCT/CN2018/089733 CN2018089733W WO2019085472A1 WO 2019085472 A1 WO2019085472 A1 WO 2019085472A1 CN 2018089733 W CN2018089733 W CN 2018089733W WO 2019085472 A1 WO2019085472 A1 WO 2019085472A1
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WO
WIPO (PCT)
Prior art keywords
string
free
cementing device
drill
hole
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Application number
PCT/CN2018/089733
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English (en)
French (fr)
Inventor
高彦才
程文佳
董社霞
刘刚芝
李良庆
梁月松
刘明娟
王东
周欢
仲晔
Original Assignee
中国海洋石油集团有限公司
中海油田服务股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 中国海洋石油集团有限公司, 中海油田服务股份有限公司 filed Critical 中国海洋石油集团有限公司
Priority to CA3080647A priority Critical patent/CA3080647C/en
Publication of WO2019085472A1 publication Critical patent/WO2019085472A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/122—Multiple string packers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained

Definitions

  • This article refers to, but is not limited to, the field of filling equipment, especially an integrated pipe string that is free from drilling and fishing.
  • offshore oilfield cementing operations and completion operations belong to two different construction processes, and construction has problems such as long construction time and complicated casing procedures.
  • land-based integrated drilling and finishing processes are being applied.
  • the string structure lead shoes + screen tube + drill-free tools + casing
  • the wellhead is pressed, firstly, the outer packer on the drill-free tool is sealed, the ring is sealed, the pressure is continued, the drill-free tool is opened, the cement is set up, the circulation is established, and the normal procedure is cemented. The rubber plug is pressed and the cementing is finished;
  • the small drill pipe with the fishing tool is used to salvage the internal structure of the drill-free tool, and the well is ground and the completion of the whole completion is completed.
  • Drill-free tools require casing cementing and rubber plugs to replace cement.
  • Rubber plug replacement cement may have incomplete replacement and residual cement on the inner wall of the casing;
  • the process uses hydraulic opening to open the cementing machine circulation hole, and the rubber plug is pressed to close the circulating hole of the cementing device.
  • the circulation hole switch is not easy to be formed, which affects the cementing quality;
  • the inventors of the present application have provided a large-scale study to provide a drill-free, dry-free and complete integrated tubular column, which solves the problems of poor circulation loop closure and difficulty in returning the rubber plug.
  • the outer packer is set to be closed; the stringer string is pressed down to open the on/off type cementing device; the cement is filled in the drill pipe and the rubber plug is replaced; Seal the tool string column to close the on/off type cementing device, and retrieve the rubber plug.
  • the whole construction process is continuous, avoiding waiting time.
  • the present invention provides a drill-free, dry-free completion integrated pipe string, including a casing pipe string and a set-up tool string pipe installed in the casing pipe string and closed in a lower section;
  • the column comprises an on/off type cementing device, an outer tube packer and an inner seal shorting connected in sequence from top to bottom, wherein the outer tube packer is provided with a pressure transmitting hole;
  • the setting tool string tube includes an outer seal shorting, a pressure pressing seat and an inner seal connected in sequence from top to bottom, and the outer seal is shortly provided with a flow hole, and the overflow hole is located in the open/close type cementing Between the inner seal and the inner seal short, the open/close grout is sealed with the outer seal short, the inner seal short is sealed with the inner seal, and the open/close type There is an anchoring mechanism for releasing the hand between the cementing device and the outer seal shorting.
  • the setting tool string string may further include: a drill rod located above the outer seal shorting, the lower end of the drill rod being short with the outer seal The upper ends of the connections are connected.
  • the setting tool string string may further include: a lower end closed inner guiding shoe, the inner guiding shoe is located below the inner seal, and the upper end of the inner guiding shoe is The lower ends of the inner seals are connected.
  • the setting tool string column may further include: a rubber plug that can be inserted into the outer sealing short joint to be sealed with the pressure pressing seat.
  • the casing string may further include: a screen tube located below the inner seal shorting, the upper end of the screen tube being short-circuited with the inner seal The lower ends are connected.
  • the casing string may further include: an outer guiding shoe penetrating at a lower end, the outer guiding shoe is located below the screen tube, and an upper end of the outer guiding shoe and the sieve The lower ends of the tubes are connected.
  • the casing string may further include: a generating sleeve, the generating sleeve is located above the opening/closing type cementing device, and the lower end of the generating sleeve is The upper ends of the open/close type cementing devices are connected.
  • the on/off type cement grout may include a mechanical on/off type cement grout.
  • the mechanical on/off type cementer may include: an inner cylinder provided with a first through hole; and an outer cylinder having a lower end of the outer cylinder Connected to the outer tube packer, the outer cylinder is provided with a second through hole; and wherein the inner cylinder is configured to be vertically movable to be mounted in the outer cylinder when the mechanical opening
  • the first through hole is above the second through hole, the side wall of the inner cylinder covers the second through hole when the mechanical grinder is turned on/off
  • the inner cylinder moves downward relative to the outer cylinder to electrically connect the first through hole and the second through hole.
  • the anchoring mechanism may include a threaded fastener disposed on the outer seal shorting and a barb disposed on the open/close type cementing device.
  • the present invention provides a method for the integration of a well-free and dry-free completion, the method comprising the use of the drill-free, dry-free completion integrated tubular string according to any one of the embodiments of the present invention, the method comprising the following steps :
  • the step of pressing the outer tube packer may include: shorting the outer casing seal and the setting tool string string by the outer seal and the After the seal between the seal between the open/close grouting device and the seal between the inner seal and the inner seal is connected to the pressure transmitting hole of the outer packer, The set tool string is pumped, the pressure enters the pressure transfer hole and the plurality of sets of shear pins of the outer packer are cut to complete the setting of the outer packer.
  • the step of opening the on/off type cementing device may include: cutting the setting tool string string to a certain tonnage, and cutting the on/off type cementing device Cutting the nail, the inner cylinder of the open/close type cementing device is moved downward to make the first through hole of the inner cylinder of the open/close type cementing device and the outside of the opening/closing type cementing device
  • the second through hole of the barrel is electrically connected such that the inside of the casing string is electrically connected to the well.
  • the step of injecting cement into the casing string and the inside of the well through the on/off type cementer may include: putting the rubber plug into the setting After the tool string is in the column, an injection fluid is displaced to replace the rubber plug to inject cement into the casing string and the inside of the well through the on/off type cementing device.
  • the step of closing the on/off grouting device by the anchoring mechanism may include: after lifting the setting tool string string, the anchoring mechanism drives the The inner cylinder of the open/close type cementing device is moved up to close the first through hole of the inner cylinder of the open/close type cementing device and the outer cylinder of the open/close type cementing device The conduction between the second through holes is to achieve the closing of the on/off type cementer.
  • the integrated drill pipe and the application of the drill-free and dry-free completion well provided by the embodiment of the invention solve the problems of unsatisfactory closure of the circulation hole and difficulty in retrieving the rubber plug.
  • the outer packer is set to be closed; the stringer string is pressed down to open the on/off type cementing device; the cement is injected into the drill pipe, and the lower rubber plug is replaced; Set the tool string column to close the on/off type cementing device, and take back the rubber plug.
  • the whole construction process is continuous, avoiding waiting time.
  • FIG. 5 are schematic cross-sectional structural views showing different working states of a drill-free, dry-free and completion-completed tubular string according to an embodiment of the present application.
  • the drill-free and dry-free completion integrated pipe string provided by the present application comprises a casing pipe string and a set-up tool string pipe installed in the casing pipe string and closed in the lower section
  • the casing string includes an on/off type cementing device, an out-of-pipe packer 8 and an inner seal shorting 9 connected in series from top to bottom, and the outer tube packer 8 is provided with a pressure transmission
  • the sealing tool string column includes an outer sealing shorting 5, a pressing seat 7 and an inner sealer 11 connected in sequence from top to bottom, and the outer sealing shorting 5 is provided with a flow hole 17,
  • the through hole 17 is located between the open/close type cementing device and the inner sealing shorting 9 , and the opening/closing type cementing device is sealed with the outer sealing shorting 5, the inner sealing is short
  • the joint 9 and the inner seal 11 are sealed, and an anchoring mechanism for releasing the hand is provided between the open/close type cementer and the outer seal short.
  • the drill-free, dry-free and completion-completed pipe string provided by the application solves the problems that the circulation hole is not tightly closed and the rubber plug 15 is difficult to be retrieved.
  • the outer tube packer 8 is set; the pressure setting string string is pressed down to open the on/off type cementing device; the cement in the drill pipe 10 is cemented and the lower rubber plug 15 is replaced; Lifting the tool string to close the on/off type cementing device, and returning the rubber plug 15, the whole construction process is continuous, avoiding waiting time.
  • the setting tool string column further includes: a drill pipe 10 located above the outer seal shorting 5, the lower end of the drill pipe 10 is connected with the upper end of the outer sealing shorting 5; a closed inner guiding shoe 12, located below the inner seal 11, the upper end of the inner guiding shoe 12 is connected with the lower end of the inner sealer 11; and a rubber plug 15, the rubber plug 15 can be placed
  • the outer seal is shortened 5 and sealed on the pressing seat 7.
  • the casing string further includes: a screen 14 located below the inner seal shorting 9, the upper end of the screen 14 is connected to the lower end of the inner seal short 9; the lower end is continuous
  • An outer guiding shoe 13 is located below the screen tube 14, an upper end of the outer guiding shoe 13 is connected with a lower end of the screen tube 14; and a generating sleeve 4 is located at the opening/closing type cementing device Upper, the lower end of the generating sleeve 4 is connected to the upper end of the open/close type cementer.
  • the on/off type cementing device is a mechanical on/off type cementing device 6, and the mechanical on/off type cementing device 6 comprises: an inner cylinder body on which a first through hole 18 is disposed; An outer cylinder having a lower end connected to the outer tube packer 8 and a second through hole 19 disposed in the outer cylinder, wherein the inner cylinder is vertically movable
  • the mechanical on/off type cementing device 6 is in a closed state, the first through hole 18 is above the second through hole 19, and the side wall of the inner cylindrical body covers the second through hole 19,
  • the mechanical on/off type cementer 6 is in an open state, the inner cylinder moves downward relative to the outer cylinder to make the first through hole 18 and the second through hole 19 coincide.
  • the anchoring mechanism includes a threaded buckle disposed on the outer sealing shorting 5 and a barb disposed on the opening/closing type cementing device to rotate the setting tool string by reverse rotation To achieve the handle of the stringing string and the casing string.
  • the wellhead first enters the casing string, and then enters the sealing tool string column, as shown in Figure 1.
  • the casing string is lowered according to the above connection sequence, and after the completion of the completion, the casing string is suspended from the wellhead by a slip, and then, for example, by a large hook or a top drive, the casing string is lowered into the string. If the hook or top drive has an abnormal change in the hanging weight, the set of the tool string is lowered into place.
  • the casing string and the set tool string string are sealed by means of an outer seal shorting 5 and a mechanical on/off type cementing device 6 and an inner seal 11 and an inner sealing short 9 .
  • the formed sealing space is connected with the pressure transmitting hole of the outer packer 8, and is pumped from the wellhead according to the step pressure to the drill pipe 10, the pressure enters the pressure transmitting hole and the plurality of sets of shearing pins of the outer packer 8 are sequentially cut. The setting of the outer tube packer 8 is completed.
  • the rubber plug 15 is put into the stringer string of the setting tool through the cement head, and the displacement liquid is injected, and the displacement liquid is replaced by the rubber plug 15 to pass the cement through the circulation hole of the mechanical open/close type cementing device 6, and injected into the casing string and Inside the open hole, the rubber plug 15 is in contact with the pressing seat 7 to achieve a pressing force.
  • the rotating and sealing tool string string is lifted and inverted, and the inner cylinder is moved up by the anchoring mechanism to close the circulation hole of the mechanical opening/closing type cementing device 6, and the casing string and the setting are completed.
  • the tool string pipe is released from the hand, and the string of the sealing tool string is taken out, Hou Ning, and the integrated cementing operation is completed.
  • the well structure includes: a formation 1, an outer sleeve 2, an outer layer cement 3, and a tubing 16.
  • the integrated drill-free and dry-finished integrated tubular string provided by the invention solves the problems that the circulation hole is not tightly closed and the rubber plug is difficult to retrieve.
  • the tube pack is installed in place, and the outer packer is set by the tube.
  • the press string is installed to open the open/close type cementing device, and the cement and the rubber plug are replaced in the drill pipe, and the setting tool string is lifted.
  • the pipe column closes the on/off type cementing device to retrieve the rubber plug, and the whole construction process is continuous, avoiding the waiting time of the waiting time.
  • connection may be a fixed connection, a detachable connection, or an integral connection. They can be directly connected or indirectly connected through an intermediate medium.
  • connecting may be a fixed connection, a detachable connection, or an integral connection. They can be directly connected or indirectly connected through an intermediate medium.
  • specific meanings of the above terms herein may be understood on a case-by-case basis.
  • the integrated drill pipe without the drill-free and the completion of the well provided by the embodiment of the invention solves the problems that the circulation hole is not tightly closed, the rubber plug is difficult to retrieve, and the like, and is convenient for application in the integrated solid completion operation.
  • the application method of the drill-free, dry-free and completion integrated pipe string provided by the embodiment of the invention can complete the solid-complete completion operation with high efficiency and high quality.

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Abstract

一种免钻免捞固完井一体化管柱，包括套管管柱和安装在套管管柱内且下段封闭的坐封工具串管柱；套管管柱包括自上至下依次相连接的开/关式注水泥器（6）、管外封隔器（8）和内密封短接（9），管外封隔器上设置有传压孔；坐封工具串管柱包括自上至下依次相连接的外密封短接（5）、碰压座（7）和内密封器（11），外密封短接上设置有过流孔（17），过流孔位于开/关式注水泥器和内密封短接之间，开/关式注水泥器与外密封短接相密封，内密封短接和内密封器相密封，且开/关式注水泥器与外密封短接之间具有用于脱手的锚定机构。同时，一种免钻免捞一体化固完井的方法被公开。

Description

免钻免捞固完井一体化管柱及其应用 技术领域
本文涉及但不限于充填设备领域，尤指一种免钻免捞固完井一体化管柱。
背景
通常情况下，海上油田固井作业和完井作业分属两个不同的施工工艺，施工存在着施工时间长、套管程序复杂等问题。目前陆地正在应用免钻固完井一体化工艺。
目前陆地应用的免钻固完井一体化工艺流程如下：
一、管串结构组成：引鞋+筛管+免钻工具+套管；
二、管串到位后，井口打压，首先胀封免钻工具上的管外封隔器，封隔环空，继续打压，打开免钻工具分级注水泥器，建立循环，正常程序固井，后期投胶塞碰压，固井结束；
三、侯凝结束后，下带打捞工具的小钻杆，打捞免钻工具内部结构，并磨铣通井，整个完井施工结束。
发明概述
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请发明人发现，目前的免钻固完井一体化工艺存在较大的隐患与不足，如下所述：
1.免钻工具需要套管注水泥以及胶塞顶替水泥，胶塞顶替水泥可能存在顶替不完全，套管内壁残留水泥的情况；
2.该工艺采用液压打开注水泥器循环孔、胶塞碰压关闭注水泥器循环孔，实际施工中容易出现循环孔开关不严的情况，影响固井质量；
3.固井后，需要下打捞工具打捞免钻工具内部结构，打捞回取困难。
本申请发明人经大量研究，提供了一种免钻免捞固完井一体化管柱，很 好地解决了循环孔关闭不严、回取胶塞困难等的问题。坐封工具串管柱安装到位后，坐封管外封隔器；下压坐封工具串管柱，打开开/关式注水泥器；钻杆内注水泥并且下胶塞顶替；上提坐封工具串管柱以关闭开/关式注水泥器，并回取胶塞，整个施工流程连贯，避免侯凝等待时间。
因此，本文提供了一种免钻免捞固完井一体化管柱，包括套管管柱和安装在所述套管管柱内且下段封闭的坐封工具串管柱；所述套管管柱包括自上至下依次相连接的开/关式注水泥器、管外封隔器和内密封短接，所述管外封隔器上设置有传压孔；所述坐封工具串管柱包括自上至下依次相连接的外密封短接、碰压座和内密封器，所述外密封短接上设置有过流孔，所述过流孔位于所述开/关式注水泥器和内密封短接之间，所述开/关式注水泥器与所述外密封短接相密封，所述内密封短接和所述内密封器相密封，且所述开/关式注水泥器与所述外密封短接之间具有用于脱手的锚定机构。
在本申请示例性实施方案中，所述坐封工具串管柱还可以包括：钻杆，所述钻杆位于所述外密封短接的上方，所述钻杆的下端与所述外密封短接的上端相连接。
在本申请示例性实施方案中，所述坐封工具串管柱还可以包括：下端封闭的内引鞋，所述内引鞋位于所述内密封器的下方，所述内引鞋的上端与所述内密封器的下端相连接。
在本申请示例性实施方案中，所述坐封工具串管柱还可以包括：胶塞，所述胶塞可投放入所述外密封短接内而与所述碰压座相密封。
在本申请示例性实施方案中，所述套管管柱还可以包括：筛管，所述筛管位于所述内密封短接的下方，所述筛管的上端与所述内密封短接的下端相连接。
在本申请示例性实施方案中，所述套管管柱还可以包括：下端贯通的外引鞋，所述外引鞋位于所述筛管的下方，所述外引鞋的上端与所述筛管的下端相连接。
在本申请示例性实施方案中，所述套管管柱还可以包括：生成套管，所述生成套管位于所述开/关式注水泥器的上方，所述生成套管的下端与所述开 /关式注水泥器的上端相连接。
在本申请示例性实施方案中，所述开/关式注水泥器可以包括机械开/关式注水泥器。
在本申请示例性实施方案中，所述机械开/关式注水泥器可以包括：内筒体，所述内筒体设置有第一通孔；和外筒体，所述外筒体的下端与所述管外封隔器相连接，所述外筒体设置有第二通孔；并且其中，所述内筒体配置为可上下移动地安装于所述外筒体内，当所述机械开/关式注水泥器处于关闭状态时，所述第一通孔处于所述第二通孔的上方，所述内筒体的侧壁覆盖所述第二通孔，当所述机械开/关式注水泥器处于打开状态时，所述内筒体相对于所述外筒体向下移动以使所述第一通孔和所述第二通孔相导通。
在本申请示例性实施方案中，所述锚定机构可以包括设置于所述外密封短接上的螺纹扣和设置于所述开/关式注水泥器上的倒钩。
本文提供了一种免钻免捞一体化固完井的方法，所述方法包括使用本发明实施方案任一项所述的免钻免捞固完井一体化管柱，所述方法包括如下步骤：
在井口处，先下入所述套管管柱，再下入所述坐封工具串管柱；
打压坐封所述管外封隔器；
下压所述坐封工具串管柱，并打开所述开/关式注水泥器，按设计量注入水泥；
将胶塞投入所述坐封工具串管柱中，并使水泥通过所述开/关式注水泥器注入到所述套管管柱与井的内部，同时使所述胶塞与与所述碰压座接触实现碰压；并且
上提所述坐封工具串管柱以通过所述锚定机构关闭所述开/关式注水泥器，完成所述套管管柱与所述坐封工具串管柱的脱手，侯凝，完成一体化固完井。
在本申请示例性实施方案中，打压坐封所述管外封隔器的步骤可以包括：在所下入的套管管柱与坐封工具串管柱依靠所述外密封短接和所述开/关式注水泥器之间的密封与所述内密封器和所述内密封短接之间的密封所形成的 密封空间与所述管外封隔器的传压孔相连后，向所述坐封工具串管柱泵压，压力进入所述传压孔并剪断所述管外封隔器的多组剪钉，完成所述管外封隔器的坐封。
在本申请示例性实施方案中，打开所述开/关式注水泥器的步骤可以包括：下压所述坐封工具串管柱到一定吨位后，剪断所述开/关式注水泥器的剪钉，所述开/关式注水泥器的内筒体下移以使所述开/关式注水泥器的内筒体的第一通孔与所述开/关式注水泥器的外筒体的第二通孔导通，从而使所述套管管柱的内部与所述井导通。
在本申请示例性实施方案中，使水泥通过所述开/关式注水泥器注入到所述套管管柱与井的内部的步骤可以包括：在将所述胶塞投入到所述坐封工具串管柱中后，注入顶替液顶替所述胶塞使水泥通过所述开/关式注水泥器注入到所述套管管柱与井的内部。
在本申请示例性实施方案中，通过所述锚定机构关闭所述开/关式注水泥器的步骤可以包括：在上提所述坐封工具串管柱后，所述锚定机构带动所述开/关式注水泥器的内筒体上移，以关闭所述开/关式注水泥器的内筒体的第一通孔与所述开/关式注水泥器的外筒体的第二通孔之间的导通，来实现所述开/关式注水泥器的关闭。
本发明实施例提供的免钻免捞固完井一体化管柱及其应用，很好地解决了循环孔关闭不严、回取胶塞困难等的问题。坐封工具串管柱安装到位后，坐封管外封隔器；下压坐封工具串管柱，打开开/关式注水泥器；钻杆内注水泥，并且下胶塞顶替；上提坐封工具串管柱以关闭开/关式注水泥器，并且回取胶塞，整个施工流程连贯，避免侯凝等待时间。
本文的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得清楚明白，或者通过实施本文而了解。本文的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图简述
附图用来提供对本文技术方案的进一步理解，并且构成说明书的一部分，与本申请的实施例一起用于解释本文的技术方案，并不构成对本文技术方案 的限制。
图1至图5为本申请一个实施例所述的免钻免捞固完井一体化管柱不同工作状态的剖视结构示意图。
其中，图1至图5中附图标记与部件名称之间的对应关系为：
1地层，2外层套管，3外层水泥，4生成套管，5外密封短接，6机械开/关式注水泥器，7碰压座，8管外封隔器，9内密封短接，10钻杆，11内密封器，12内引鞋，13外引鞋，14筛管，15胶塞，16油管，17过流孔，18第一通孔，19第二通孔。
详述
为使本申请的目的、技术方案和优点更加清楚明白，下文中将结合附图对本申请的实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
在下面的描述中阐述了很多具体细节以便于充分理解本文，但是，本文还可以采用其他不同于在此描述的方式来实施，因此，本文的保护范围并不受下面公开的具体实施例的限制。
下面结合附图描述本文一些实施例的免钻免捞固完井一体化管柱。
本申请提供的免钻免捞固完井一体化管柱，如图1至图5所示，包括套管管柱和安装在所述套管管柱内且下段封闭的坐封工具串管柱；所述套管管柱包括自上至下依次相连接的开/关式注水泥器、管外封隔器8和内密封短接9，所述管外封隔器8上设置有传压孔；所述坐封工具串管柱包括自上至下依次相连接的外密封短接5、碰压座7和内密封器11，所述外密封短接5上设置有过流孔17，所述过流孔17位于所述开/关式注水泥器和内密封短接9之间，所述开/关式注水泥器与所述外密封短接5相密封，所述内密封短接9和所述内密封器11相密封，且所述开/关式注水泥器与所述外密封短接5之间具有用于脱手的锚定机构。
本申请提供的免钻免捞固完井一体化管柱，很好地解决了循环孔关闭不严、回取胶塞15困难等的问题。坐封工具串管柱安装到位后，坐封管外封隔 器8；下压坐封工具串管柱，打开开/关式注水泥器；钻杆10内注水泥并且下胶塞15顶替；上提坐封工具串管柱以关闭开/关式注水泥器，并回取胶塞15，整个施工流程连贯，避免侯凝等待时间。
具体地，所述坐封工具串管柱还包括：钻杆10，位于所述外密封短接5的上方，所述钻杆10的下端与所述外密封短接5的上端相连接；下端封闭的内引鞋12，位于所述内密封器11的下方，所述内引鞋12的上端与所述内密封器11的下端相连接；和胶塞15，所述胶塞15可投放入所述外密封短接5内而密封在所述碰压座7上。
具体地，所述套管管柱还包括：筛管14，位于所述内密封短接9的下方，所述筛管14的上端与所述内密封短接9的下端相连接；下端贯通的外引鞋13，位于所述筛管14的下方，所述外引鞋13的上端与所述筛管14的下端相连接；和生成套管4，位于所述开/关式注水泥器的上方，所述生成套管4的下端与所述开/关式注水泥器的上端相连接。
其中，所述开/关式注水泥器为机械开/关式注水泥器6，所述机械开/关式注水泥器6包括：内筒体，其上设置有第一通孔18；和外筒体，其下端与所述管外封隔器8相连接，所述外筒体上设置有第二通孔19，所述内筒体可上下移动地安装于所述外筒体内，并且当机械开/关式注水泥器6处于关闭状态时，所述第一通孔18处于所述第二通孔19的上方，所述内筒体的侧壁覆盖所述第二通孔19，当机械开/关式注水泥器6处于打开状态时，内筒体相对于外筒体向下移动以使第一通孔18和第二通孔19重合相导通。具体地，所述锚定机构包括设置于所述外密封短接5上的螺纹扣和设置于所述开/关式注水泥器上的倒钩，以通过反向转动坐封工具串管柱来实现坐封工具串管柱与套管管柱丢手。
五个实施过程分述如下：
一、井口先下入套管管柱，再下入坐封工具串管柱，如图1所示。
在井口处，按照上述连接顺序下入套管管柱，下入完成后用卡瓦将套管管柱悬于井口，再例如，通过大钩或顶驱下入坐封工具串管柱，直到大钩或顶驱有悬重异常变化，则坐封工具串管柱下入到位。
二、井口打压坐封管外封隔器8，如图2所示。
套管管柱与坐封工具串管柱依靠外密封短接5和机械开/关式注水泥器6及内密封器11和内密封短接9实现两处密封。形成的密封空间与管外封隔器8的传压孔相连，从井口按照阶梯压力向钻杆10内泵压，压力进入传压孔并依次剪断管外封隔器8的多组剪钉，完成管外封隔器8的坐封。
三、打开机械开/关式注水泥器6，按设计量注水泥，如图3所示。
下压钻杆10到一定吨位，剪断机械开/关式注水泥器6的剪钉，打开循环孔(即内筒体下移导通第一通孔18和第二通孔19)，循环孔导通套管管柱内与套管管柱外，按设计量注入水泥。
四、胶塞15顶替水泥、碰压，如图4所示。
将胶塞15通过水泥头投入坐封工具串管柱内、并注入顶替液，顶替液顶替胶塞15使水泥通过机械开/关式注水泥器6的循环孔，注入到套管管柱与裸眼井内部，胶塞15与碰压座7接触实现碰压。
五、脱手坐封工具串管柱，侯凝，完成一体化固井作业，如图5所示。
碰压后，上提并倒扣旋转坐封工具串管柱，依靠锚定机构带动内筒体上移以关闭机械开/关式注水泥器6的循环孔，完成套管管柱与坐封工具串管柱脱手，取出坐封工具串管柱，侯凝，完成一体化固井作业。
其中，井内结构包括：地层1、外层套管2、外层水泥3和油管16。
综上所述，本发明提供的免钻免捞固完井一体化管柱，很好地解决了循环孔关闭不严、回取胶塞困难等的问题。坐封工具串管柱安装到位后坐封管外封隔器，下压坐封工具串管柱打开开/关式注水泥器，钻杆内注水泥及下胶塞顶替，上提坐封工具串管柱关闭开/关式注水泥器回取胶塞，整个施工流程连贯，避免侯凝等待时间。
在本文的描述中，术语“安装”、“相连”、“连接”、“固定”等均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本文中的具体含义。
在本说明书的描述中，术语“一个实施例”、“一些实施例”、“具体 实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本文的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
本公开内容是本申请实施例的原则的示例，并非对本申请作出任何形式上或实质上的限定，或将本申请限定到具体的实施方案。对本领域的技术人员而言，很显然本申请实施例的技术方案的要素、方法和系统等，可以进行变动、改变、改动、演变，而不背离如上所述的本申请的实施例、技术方案的，如权利要求中所定义的原理、精神和范围。这些变动、改变、改动、演变的实施方案均包括在本申请的等同实施例内，这些等同实施例均包括在本申请的由权利要求界定的范围内。虽然可以许多不同形式来使本申请实施例具体化，但此处详细描述的是本发明的一些实施方案。此外，本申请的实施例包括此处所述的各种实施方案的一些或全部的任意可能的组合，也包括在本申请的由权利要求界定的范围内。在本申请中或在任一个引用的专利、引用的专利申请或其它引用的资料中任何地方所提及的所有专利、专利申请和其它引用资料据此通过引用以其整体并入。
以上公开内容规定为说明性的而不是穷尽性的。对于本领域技术人员来说，本说明书会暗示许多变化和可选择方案。所有这些可选择方案和变化旨在被包括在本权利要求的范围内，其中术语“包括”意思是“包括，但不限于”。
在此完成了对本发明可选择的实施方案的描述。本领域技术人员可认识到此处所述的实施方案的其它等效变换，这些等效变换也为由附于本文的权利要求所包括。
工业实用性
本发明实施例提供的免钻免捞固完井一体化管柱，解决了循环孔关闭不严、回取胶塞困难等的问题，便于应用于一体化固完井操作中。本发明实施例提供的免钻免捞固完井一体化管柱的应用方法，能够高效、高质量地完成固完井作业。

Claims (15)

  1. 一种免钻免捞固完井一体化管柱，包括套管管柱和安装在所述套管管柱内且下段封闭的坐封工具串管柱；
    所述套管管柱包括自上至下依次相连接的开/关式注水泥器、管外封隔器和内密封短接，所述管外封隔器上设置有传压孔；以及
    所述坐封工具串管柱包括自上至下依次相连接的外密封短接、碰压座和内密封器，所述外密封短接上设置有过流孔，所述过流孔位于所述开/关式注水泥器和所述内密封短接之间，所述开/关式注水泥器与所述外密封短接相密封，所述内密封短接和所述内密封器相密封，且所述开/关式注水泥器与所述外密封短接之间具有用于脱手的锚定机构。
  2. 根据权利要求1所述的免钻免捞固完井一体化管柱，其中，所述坐封工具串管柱还包括：
    钻杆，所述钻杆位于所述外密封短接的上方，所述钻杆的下端与所述外密封短接的上端相连接。
  3. 根据权利要求1或2所述的免钻免捞固完井一体化管柱，其中，所述坐封工具串管柱还包括：
    下端封闭的内引鞋，所述内引鞋位于所述内密封器的下方，所述内引鞋的上端与所述内密封器的下端相连接。
  4. 根据权利要求1至3中任一项所述的免钻免捞固完井一体化管柱，其中，所述坐封工具串管柱还包括：
    胶塞，所述胶塞能够投放入所述外密封短接内而与所述碰压座相密封。
  5. 根据权利要求1至4中任一项所述的免钻免捞固完井一体化管柱，其中，所述套管管柱还包括：
    筛管，所述筛管位于所述内密封短接的下方，所述筛管的上端与所述内密封短接的下端相连接。
  6. 根据权利要求5所述的免钻免捞固完井一体化管柱，其中，所述套管管柱还包括：
    下端贯通的外引鞋，所述外引鞋位于所述筛管的下方，所述外引鞋的上端与所述筛管的下端相连接。
  7. 根据权利要求1至6中任一项所述的免钻免捞固完井一体化管柱，其中，所述套管管柱还包括：
    生成套管，所述生成套管位于所述开/关式注水泥器的上方，所述生成套管的下端与所述开/关式注水泥器的上端相连接。
  8. 根据权利要求1至7中任一项所述的免钻免捞固完井一体化管柱，其中，所述开/关式注水泥器为机械开/关式注水泥器。
  9. 根据权利要求8所述的免钻免捞固完井一体化管柱，其中，所述机械开/关式注水泥器包括：
    内筒体，所述内筒体设置有第一通孔；和
    外筒体，所述外筒体的下端与所述管外封隔器相连接，所述外筒体设置有第二通孔；并且
    其中，所述内筒体配置为能够上下移动地安装于所述外筒体内，当所述机械开/关式注水泥器处于关闭状态时，所述第一通孔处于所述第二通孔的上方，所述内筒体的侧壁覆盖所述第二通孔，当所述机械开/关式注水泥器处于打开状态时，所述内筒体相对于所述外筒体向下移动以使所述第一通孔和所述第二通孔相导通。
  10. 根据权利要求1至9中任一项所述的免钻免捞固完井一体化管柱，其中，所述锚定机构包括设置于所述外密封短接上的螺纹扣和设置于所述开/关式注水泥器上的倒钩。
  11. 一种免钻免捞一体化固完井的方法，所述方法包括使用根据权利要求1至10中任一项所述的免钻免捞固完井一体化管柱，所述方法包括如下步骤：
    在井口处，先下入所述套管管柱，再下入所述坐封工具串管柱；
    打压坐封所述管外封隔器；
    下压所述坐封工具串管柱，并打开所述开/关式注水泥器，按设计量注入水泥；
    将胶塞投入所述坐封工具串管柱中，并使水泥通过所述开/关式注水泥器注入到所述套管管柱与井的内部，同时使所述胶塞与所述碰压座接触实现碰压；并且
    上提所述坐封工具串管柱以通过所述锚定机构关闭所述开/关式注水泥器，完成所述套管管柱与所述坐封工具串管柱的脱手，侯凝，完成一体化固完井。
  12. 根据权利要求11所述的方法，其中，打压坐封所述管外封隔器的步骤包括：在所下入的套管管柱与坐封工具串管柱依靠所述外密封短接和所述开/关式注水泥器之间的密封与所述内密封器和所述内密封短接之间的密封所形成的密封空间与所述管外封隔器的传压孔相连后，向所述坐封工具串管柱泵压，压力进入所述传压孔并剪断所述管外封隔器的多组剪钉，完成所述管外封隔器的坐封。
  13. 根据权利要求11或12所述的方法，其中，打开所述开/关式注水泥器的步骤包括：下压所述坐封工具串管柱到一定吨位后，剪断所述开/关式注水泥器的剪钉，所述开/关式注水泥器的内筒体下移以使所述开/关式注水泥器的内筒体的第一通孔与所述开/关式注水泥器的外筒体的第二通孔导通，从而使所述套管管柱的内部与所述井导通。
  14. 根据权利要求11至13中任一项所述的方法，其中，使水泥通过所述开/关式注水泥器注入到所述套管管柱与井的内部的步骤包括：在将所述胶塞投入到所述坐封工具串管柱中后，注入顶替液顶替所述胶塞使水泥通过所述开/关式注水泥器注入到所述套管管柱与井的内部。
  15. 根据权利要求11至14中任一项所述的方法，其中，通过所述锚定机构关闭所述开/关式注水泥器的步骤包括：在上提所述坐封工具串管柱后，所述锚定机构带动所述开/关式注水泥器的内筒体上移，以关闭所述开/关式注水泥器的内筒体的第一通孔与所述开/关式注水泥器的外筒体的第二通孔之间的导通，来实现所述开/关式注水泥器的关闭。
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