WO2007090338A1 - A hydraulic diameter variable casing expansion method and apparatus - Google Patents
A hydraulic diameter variable casing expansion method and apparatus Download PDFInfo
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- WO2007090338A1 WO2007090338A1 PCT/CN2007/000356 CN2007000356W WO2007090338A1 WO 2007090338 A1 WO2007090338 A1 WO 2007090338A1 CN 2007000356 W CN2007000356 W CN 2007000356W WO 2007090338 A1 WO2007090338 A1 WO 2007090338A1
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000008859 change Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 239000003638 chemical reducing agent Substances 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 235000014443 Pyrus communis Nutrition 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000000227 grinding Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
- E21B43/105—Expanding tools specially adapted therefor
Definitions
- the downhole expansion device may be directly connected to the casing deformation or to be subsidized by the oil pipe, and is composed of a variable diameter expansion head, a boosting cylinder and a casing anchor connected in order from bottom to top, wherein
- the oil pipe connecting the casing anchor and pushing and pulling back the expansion head is connected with the casing anchor and then connected with the booster cylinder, when the downhole expansion device is lowered into the casing deformation or the casing to be subsidized
- the power liquid anchors the casing anchor on the casing, and the boosting cylinder pushes the variable diameter expansion head to reduce the diameter under the action of the power liquid, and expands the deformation sleeve or the subsidy tube. Achieve quick fixes.
- the K-direction thrust overcomes the pressure of the compression spring 103, the steel ball 101 pushes the steel ball 102 to move in the centrifugal direction along the radial cylindrical hole 106, and the steel ball 102 extends out of the expansion head housing 104.
- the compression spring 103 is reset, and the steel ball 102 is retracted into the expansion head casing 104 when the casing is smoothly passed through the expansion head casing 104.
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- Piles And Underground Anchors (AREA)
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Abstract
A hydraulic diameter variable casing expansion method comprises: using hydraulic change to realize the expansion head with variable diameter which is arranged at the deformation position or fixing position of a casing; processing the expansion and retract motions of expansion head(1) to make the inner diameter of the casing expanded is not less than the nominal diameter. An apparatus used for the method comprises: a downhole expansion device, a hydraulic pump(8,9) for providing the hydraulic change, pressure-resistant tubes(41,42,43) connected on the hydraulic pump(8,9) to deliver the liquid and a transmission device(11) for transmitting the expansion device. The method and apparatus make the well maintenance time shorter, and the operation easier.
Description
一种液压变径套管胀压方法及其设备 技术领域 Hydraulic reduction casing expansion pressure method and equipment thereof
本发明涉及一种油气水井套管胀压技术及设备，尤其是一种液压变径套管胀压方法 及其设备， 属于解决油田套管变形及损坏套管补贴技术。 背景技术 The invention relates to an expansion and contraction technology and equipment for oil and gas water well casings, in particular to a hydraulic reduction casing expansion pressure method and a device thereof, and belongs to a technology for solving oil field casing deformation and damage casing subsidy. Background technique
油气水井井下套管在使用过程中，由于腐蚀，地壳运动等原因，常会造成套管变形， 磨损， 通径变小， 使油水井无法工作。 目前套管整形主要釆取的技术是： 梨形器整形， 磨铣， ***整形。 梨形器整形技术是用管柱将梨形器下到套管变形处， 用撞击方式将套 管胀开， 它存在的缺陷是由于弹形变形， 使胀开的套管反弹， 套管内径小于标准通径。 磨铣技术是对变形套管进行磨削或铣削， 会对套管造成伤害。 上述技术存在的共同缺陷 是起下管柱， 使工人劳动强度大。 ***整形是将***下到套管变形处， 点燃***， 炸开 变形套管， 它会对套管造成伤害。 发明内容 During the use of oil and gas water well casings, due to corrosion, crustal movement and other reasons, the casing will often be deformed, worn, and the diameter will be small, making the oil and water wells unable to work. At present, the main techniques for casing shaping are: pear shape shaping, milling, and explosion shaping. The pear shape shaping technology uses the column to lower the pear shape to the deformation of the casing, and expands the casing by impact. The defect is due to the deformation of the elastic shape, which causes the expansion sleeve to rebound and the inner diameter of the casing. Less than the standard diameter. Grinding technology is the grinding or milling of the deformed casing, which can cause damage to the casing. A common drawback of the above techniques is that the lower tubular string is used to make the worker labor intensive. Explosive shaping is to break the explosive down to the casing, ignite the explosive, and blast the deformed casing, which will cause damage to the casing. Summary of the invention
本发明的目的在于： 提供一种液压变径套管胀压方法， 通过胀压头的膨胀， 使套管 变径部份快速恢复原状。 The object of the present invention is to provide a method for expanding the pressure of a hydraulic reducer casing, and the expansion portion of the casing is quickly restored to its original shape by the expansion of the expansion head.
本发明还提供一种在胀压方法中使用的胀压装置。 The present invention also provides a inflation device used in a method of inflation.
本发明目的通过下述技术方案实现：一种液压变径套管胀压方法， 利用通过液压变 化实现变径的胀压头， 置于套管变形或待补贴处， 使胀压头进行膨胀、 收缩的动作， 实 现胀压后的套管内径不小于标准通径。因无需连同管柱一起下井，使修井工期减少很多， 工人劳动强度和危险减小很多； 同时， 对套管无损坏。 The object of the present invention is achieved by the following technical solution: a hydraulic expansion sleeve expansion method, using an expansion head that achieves a variable diameter by hydraulic pressure, placed in a casing deformation or to be subsidized, and the expansion head is expanded, The action of the contraction, the inner diameter of the sleeve after the expansion is achieved is not less than the standard diameter. Because there is no need to go down the well together with the pipe string, the workover period is reduced a lot, the labor intensity and danger of the workers are much reduced; at the same time, there is no damage to the casing.
确 认 本
一种用于上述液压变径套管胀压方法的设备，包括井下胀压装置、提供液压变化的 液压泵、 接在液压泵上输送液体的耐压管和运送井下胀压装置的传送机构组成。 Confirmation The invention relates to a device for expanding the pressure of the hydraulic reducer casing, comprising a downhole expansion device, a hydraulic pump providing hydraulic pressure change, a pressure pipe connected to the hydraulic pump to transport the liquid, and a conveying mechanism for conveying the underground expansion device. .
其中，所述的井下胀压装置被一根钢丝绳直接下入到套管变形或待补贴处， 自下而 上依序由变径胀压头、 双向液压缸、 套管锚连接在一起组成， 其中， 一根耐压软管连接 套管锚， 双向液压缸连接了二根分别对胀压头起到推动和拉回作用的耐压管。 Wherein, the downhole expansion device is directly driven into a casing deformation or to be subsidized by a wire rope, and is composed of a variable diameter expansion head, a bidirectional hydraulic cylinder and a casing anchor connected in sequence from bottom to top. Among them, a pressure-resistant hose is connected to the casing anchor, and the two-way hydraulic cylinder is connected with two pressure-resistant pipes respectively for pushing and pulling back the expansion head.
当井下胀压装置下入到套管变形或套管待补贴部位时，动力液使套管锚锚固在套管 上，双向液压缸在动力液的作用下推动变径胀压头变形，胀开变形套管或补贴管。实现快 速修复的目的。 When the downhole expansion device is inserted into the casing deformation or the casing to be subsidized, the power fluid anchors the casing anchor on the casing, and the two-way hydraulic cylinder pushes the variable diameter expansion head under the action of the power liquid to expand. Deformed casing or subsidized pipe. Achieve quick fixes.
在遇到套管弯曲时， 井下胀压装置中的变径胀压头与双向液压缸之间， 以及双向液 压缸与套管锚之间都有小于直角的自由摆动， 能够自动找通道。 When the casing is bent, the variable expansion head in the downhole expansion device and the two-way hydraulic cylinder, and the two-way hydraulic cylinder and the casing anchor have a free swing that is smaller than a right angle, and the passage can be automatically found.
所述的井下胀压装置还可被油管直接下入到套管变形或待补贴处， 自下而上依序由 变径胀压头、 增压缸、 套管锚连接在一起组成， 其中， 控制套管锚锚固且对胀压头起到 推动和拉回作用的油管与套管锚连接后再与增压缸连接， 当井下胀压装置下入到套管变 形或套管待补贴部位时，动力液使套管锚锚固在套管上,增压缸在动力液的作用下推动变 径胀压头变径， 胀开变形套管或补贴管。 实现快速修复的目的。 The downhole expansion device may be directly connected to the casing deformation or to be subsidized by the oil pipe, and is composed of a variable diameter expansion head, a boosting cylinder and a casing anchor connected in order from bottom to top, wherein The oil pipe connecting the casing anchor and pushing and pulling back the expansion head is connected with the casing anchor and then connected with the booster cylinder, when the downhole expansion device is lowered into the casing deformation or the casing to be subsidized The power liquid anchors the casing anchor on the casing, and the boosting cylinder pushes the variable diameter expansion head to reduce the diameter under the action of the power liquid, and expands the deformation sleeve or the subsidy tube. Achieve quick fixes.
在遇到套管弯曲时， 井下胀压装置中的变径胀压头与增压缸之间， 以及增压缸与套 管锚之间都有小于直角的自由摆动， 能够自动找通道。 When the casing is bent, the variable expansion head and the booster cylinder in the downhole expansion device, and the booster cylinder and the sleeve anchor have a free swing that is smaller than a right angle, and the passage can be automatically found.
考虑到胀压装置的安全环保， 在油管上设有安全接头， 该安全接头设在油管与泄油 器之间。 Considering the safety and environmental protection of the expansion device, a safety joint is provided on the oil pipe, and the safety joint is arranged between the oil pipe and the oil drain.
为了保证胀压头在套管内通行顺畅， 变径胀压头外壳的外径大于井下胀压装置中的 其它部分的外径,胀压头的长度大于增压缸与套管锚之和。 In order to ensure that the expansion head is smoothly circulated in the casing, the outer diameter of the variable expansion head housing is larger than the outer diameter of the other portion of the downhole expansion device, and the length of the expansion head is greater than the sum of the boost cylinder and the casing anchor.
为了胀压装置结构稳固， 增压缸与套管锚无摆动连接。 In order to stabilize the expansion device, the booster cylinder and the casing anchor have no swing connection.
为了使胀压头在套管内通行时顺畅，在胀压头的锥形头部嵌装有减小摩擦用的小球。
本发明的优越性在于： 实现胀压后的套管内径不小于标准通径， 修井工期短， 操作 方便， 工人劳动强度和危险性小， 对变形套管损害小。 附图说明 In order to make the expansion head pass smoothly in the casing, a small ball for reducing friction is fitted in the conical head of the expansion head. The invention has the advantages that: the inner diameter of the casing after the expansion pressure is not less than the standard diameter, the workover period is short, the operation is convenient, the labor intensity and the danger of the worker are small, and the damage to the deformation sleeve is small. DRAWINGS
附图 1本发明所用设备的结构示意图。 Figure 1 is a schematic view showing the structure of the apparatus used in the present invention.
附图 2为实施例 1变径胀压头结构示意图。 Figure 2 is a schematic view showing the structure of the variable diameter expansion head.
附图 3为附图 2之 A- A剖示图。 Figure 3 is a cross-sectional view taken along line A-A of Figure 2;
附图 4为实施例 2之变径胀压头结构示意图。 Figure 4 is a schematic view showing the structure of the variable diameter expansion head of the second embodiment.
附图 5为本发明所用另一设备的结构示意图。 Figure 5 is a schematic view showing the structure of another apparatus used in the present invention.
附图 6为嵌装有小球的胀压头示意图。 Figure 6 is a schematic view of a compression head with a small ball embedded therein.
图中- 图 1中：胀压头一 1;双向液压缸一 2;套管锚一 3; 耐压软管一 41， 42, 43； 卡扣一 5; 套管一 6; 井口一 7; 高压泵一 8; 高压栗一 9; 滚筒一 10; 钢丝绳一 11; 绞车一 12; In the figure - in Figure 1: expansion head 1; two-way hydraulic cylinder one 2; casing anchor one 3; pressure hose a 41, 42, 43; buckle one 5; casing one 6; wellhead a 7; High pressure pump one 8; high pressure pump one 9; drum one 10; wire rope one 11; winch one 12;
图 2、图 3中：钢球一 101;钢球一 102;压缩弹簧一 103;胀压头外壳一 104;垫块一 105; 圆柱孔一 106; 2, FIG. 3: steel ball 101; steel ball 102; compression spring 103; expansion head housing 104; spacer 105; cylindrical hole 106;
图 4中： 有若干个斜面或渐开曲面的圆柱体一107' ， 钢球一 102' ， 压缩弹簧 —103' ， 胀压头外壳一 104， ， 圆柱孔一106' In Figure 4: a cylinder with a number of beveled or involute curved surfaces 107', steel ball 102', compression spring - 103', expansion head housing 104, cylindrical hole 106'
图 5中： 胀压头一 1"; 增压缸一 2"; 套管铺一 3"; 耐压软管一 4"; 油管一 5"; 套管 一 6"; 泄油器一 13"; 安全接头一 14"; Figure 5: Expansion head 1"; booster cylinder 2"; casing 1"; pressure hose 1"; tubing 5"; casing one 6"; drain one 13" ; Safety connector 14";
图 6中： 胀压头一 Γ"; 小球一 108"， 具体实施方式 In Figure 6: the expansion head is Γ"; the ball is 108", the specific embodiment
一种液压变径套管胀压方法， 利用通过液压变化实现变径的胀压头， 置于套管变形
处， 使胀压头进行膨胀、 收縮的动作， 实现胀压后的套管内径不小于套管的标准通径。 实施例 1 A hydraulic reducer casing expansion method, which uses a pressure expansion head which realizes a variable diameter by hydraulic pressure, and is placed in a casing deformation At the position, the expansion head is expanded and contracted, and the inner diameter of the sleeve after the expansion is realized is not less than the standard diameter of the sleeve. Example 1
针对上述方法， 本发明提供一种用于液压变径套管胀压方法的设备， 包括井下胀压 装置、 提供液压变化的液压泵、 接在液压泵上输送液体的耐压软管和运送胀压装置的传 送机构组成。 如图 1本发明所用设备的结构示意图所示， 井下胀压装置被一根钢丝绳 11 直接下入到套管 6变形处，井下胀压装置自下而上依序由变径胀压头 1、双向液压缸 2、套 管锚 3连接在一起组成， 一根耐压软管 41连接套管锚 3， 另外两根耐压软管 42、 43与双向 液压缸 2两端相连， 分别起到推动和拉回胀压头 1的作用， 当地面切换开关向 "推动"方 向切换时， 双向液压缸 2的输出轴向下推动胀压头 1，胀幵套管 6变形段， 恢复原有套管的 通径。 传送机构由绞车 12及其带动的与井下胀压装置连接的钢丝绳 11组成。 在钢丝绳 11 和耐压软管 4上设一起到归拢作用的卡扣 5，井口 7上的地面上，设置传动机构和高压泵 8、 高压泵 9及卷绕软管 4的滚筒 10。 . In view of the above method, the present invention provides an apparatus for a hydraulic expansion sleeve expansion method, comprising a downhole expansion device, a hydraulic pump providing hydraulic pressure, a pressure hose connected to a hydraulic pump, and a delivery pressure The transmission mechanism of the pressure device. As shown in the structural schematic view of the apparatus used in the present invention, the downhole expansion device is directly driven into a deformation portion of the casing 6 by a wire rope 11, and the downhole expansion device is sequentially changed from the bottom to the top by the variable diameter expansion head. The two-way hydraulic cylinder 2 and the casing anchor 3 are connected together, one pressure-resistant hose 41 is connected to the casing anchor 3, and the other two pressure-resistant hoses 42, 43 are connected to the two ends of the two-way hydraulic cylinder 2, respectively And pulling back the function of the expansion head 1, when the ground switch is switched to the "push" direction, the output shaft of the two-way hydraulic cylinder 2 pushes the expansion head 1 downward, the deformation section of the expansion sleeve 6 is restored, and the original casing is restored. The path. The transport mechanism consists of a winch 12 and its associated wire rope 11 connected to the downhole expansion device. On the wire rope 11 and the pressure-resistant hose 4, a buckle 5 is provided for the close-up, and on the ground on the wellhead 7, a transmission mechanism and a high-pressure pump 8, a high-pressure pump 9, and a drum 10 for winding the hose 4 are disposed. .
当井下装置部分下入到套管 6变形部位时， 动力液使套管锚 3锚定在套管 6上， 起到 固定作用。 双向液压缸 2在动力液的作用下推动变径胀压头 1变形， 胀开变形套管 6。 When the downhole device portion is lowered into the deformed portion of the casing 6, the motive fluid anchors the casing anchor 3 to the casing 6 to provide a fixing function. The two-way hydraulic cylinder 2 pushes the variable diameter expansion head 1 under the action of the power liquid to expand and deform the deformation sleeve 6.
在遇到套管弯曲时，井下胀压装置中的变径胀压头与双向液压缸之间， 以及双向液 压缸与套管锚之间采用柔性连接， 都可以有小于直角的自由摆动， 使胀压装置能够自动 找通道 When the casing is bent, the flexible expansion head between the variable expansion head and the two-way hydraulic cylinder in the downhole expansion device, and the flexible connection between the two-way hydraulic cylinder and the casing anchor may have a free swing smaller than a right angle, so that The expansion device can automatically find the channel
当套管变形段较长时， 松开套管锚 3， 将切换开关切换到 "拉回"方向， 使套管锚 与液压缸体一起下行。 然后重复上述动作直到变形套管完全胀开为止。 当完成上述任务 后， 地面绞车 12通过钢丝绳 11及三根耐压软管 4将井下装置部分提出井口 7。 When the deformation section of the casing is long, loosen the casing anchor 3 and switch the diverter switch to the "pull back" direction to lower the casing anchor together with the hydraulic cylinder. Then repeat the above action until the deformation sleeve is fully expanded. When the above task is completed, the ground winch 12 lifts the downhole device portion through the wire rope 11 and the three pressure resistant hoses 4 to the wellhead 7.
在以往对变形套管整形方法中， 因为弹性变形作用， 变形套管都会发生回弹， 内径 缩小。 为解决此问题， 本实施例中提供了一种变径胀压头 1， 如图 2变径胀压头结构示意 图和图 3A- A剖示图所示，其有锥形头部的胀压头外壳 104，锥形头部上方有压缩弹簧 103,
在中心部位自下而上排列有钢球 101、钢球 101间有垫块 105，钢球 102环列均布在钢球 101 的 K向侧前方并被限位于径向圆柱孔 106内，当变形套管 6阻挡胀压头 1前进时， K向推力克 服压缩弹簧 103的压力，钢球 101推动钢球 102沿径向圆柱孔 106向离心方向运动，钢球 102 伸出胀压头外壳 104直接胀压变形套管处，当套管经胀压后能顺利通过胀压头外壳 104时， 压缩弹簧 103复位， 钢球 102缩回胀压头外壳 104内。 In the conventional method of shaping the deformed sleeve, the deformed sleeve rebounds due to the elastic deformation, and the inner diameter is reduced. In order to solve this problem, in the present embodiment, a variable diameter expansion head 1 is provided, as shown in the schematic diagram of the variable diameter expansion head of FIG. 2 and the sectional view of FIG. 3A-A, which has the inflation pressure of the tapered head. The head housing 104 has a compression spring 103 above the tapered head. There are steel balls 101 and steel balls 101 arranged in the center from bottom to top. The steel balls 102 are arranged in the front of the K-direction side of the steel ball 101 and are limited to the radial cylindrical holes 106. When the deformation sleeve 6 blocks the advancement of the expansion head 1, the K-direction thrust overcomes the pressure of the compression spring 103, the steel ball 101 pushes the steel ball 102 to move in the centrifugal direction along the radial cylindrical hole 106, and the steel ball 102 extends out of the expansion head housing 104. When the casing is directly expanded and deformed, the compression spring 103 is reset, and the steel ball 102 is retracted into the expansion head casing 104 when the casing is smoothly passed through the expansion head casing 104.
对胀压头 1的结构还可提供以下改进， 钢球 101可以是均布有若千个斜面或渐开曲 面的圆柱体。 The following improvements can also be made to the structure of the expansion head 1 which can be a cylinder uniformly distributed with thousands of bevels or involute curved surfaces.
所述的圆柱体与垫块 15可以为一个整体。 The cylinder and the spacer 15 may be one unitary.
本发明工作原理是： 当需要对变形套管进行胀压时， 传动机构利用钢丝绳连同三根 高压软管将井下装置部分直接下到套管变形处， 高压泵输出髙压液体， _分别经三根高压 ' 软管进入井下， 其中一根与套管锚相连， 高压液体使套管锚锚定在套管上， 起到固定作 用。 另外两根高压软管与双向液压缸两端相连， 分别起到推动和拉回胀压头的作用， 当 地面切换开关向 "推动"方向切换时， 双向液压缸的输出轴向下推动胀压头， 胀开变形 段， 恢复原有套管的通径。 当套管变形段较长时， 松开套管锚， 将切换幵关切换到 "拉' 回"方向， 使套管锚与液压缸体一起下行。 然后重复上述动作直到变形套管完全胀开为 止。当完成上述任务后，传动机构通过钢丝绳及三根高压软管将井下装置部分提出井口。 实施例 2 The working principle of the invention is: When the deformation sleeve needs to be expanded, the transmission mechanism uses the steel wire rope together with three high-pressure hoses to directly lower the downhole device part to the deformation of the casing, and the high pressure pump outputs the pressure liquid, _ respectively through three high pressures 'The hose enters the well, one of which is connected to the casing anchor. The high-pressure liquid anchors the casing anchor to the casing for fixing. The other two high-pressure hoses are connected to both ends of the two-way hydraulic cylinder to respectively push and pull back the expansion head. When the ground switch is switched to the "push" direction, the output of the two-way hydraulic cylinder pushes the expansion pressure downward. Head, expand the deformation section, restore the original casing diameter. When the deformation section of the casing is long, loosen the casing anchor and switch the switching jaw to the "pull back" direction to lower the casing anchor together with the hydraulic cylinder. Then repeat the above action until the deformation sleeve is fully expanded. When the above tasks are completed, the transmission mechanism raises the portion of the downhole device to the wellhead through the wire rope and the three high-pressure hoses. Example 2
如图 4本实施例之变径胀压头结构示意图所示， 在上述.方案基础上， 本发明还提供 一种用于液压变径套管胀压方法的设备，所述的变径胀压头有锥形头部的胀压头外壳 104， ，胀压头外壳外径等于套管的标准通径,锥形头部上方有压缩弹簧 103' ，在其中心 部位均布有若干个抵顶钢球 102' 的斜面或渐开曲面的圆柱体 107' ，圆柱体 107' 与牵引 棒连接为一体，钢球 102' 环列均布在圆柱体 107' 的 K向侧前方，并被限位于径向圆柱孔 106' 内，本胀压头特别适合用于补贴管， 当贴补管阻挡胀压头前进时， 拉力克服压缩弹
簧 103' 的压力， 圆柱体 107' 的斜面或渐开曲面推动钢球 102' 沿径向圆柱孔 106' 向离 心方向运动， 钢球 102' 伸出胀压头外壳 104' 直接胀压补贴套管处， 当补贴管经胀压后 能顺利通过胀压头外壳 104' 时， 压缩弹簧 103' 复位， 钢球 102， 缩回胀压头外壳 104， 内。 4 is a schematic view showing the structure of the variable diameter expansion head according to the embodiment of the present invention. On the basis of the above solution, the present invention further provides an apparatus for a method for expanding the pressure of a hydraulic reducer, the variable expansion pressure. The expansion head housing 104 having a conical head, the outer diameter of the expansion head housing is equal to the standard diameter of the sleeve, the compression head 103' is above the conical head, and a plurality of tops are arranged at the center portion thereof. The inclined surface of the steel ball 102' or the cylindrical body 107' of the involute curved surface, the cylindrical body 107' is integrally connected with the pulling rod, and the ring of the steel ball 102' is evenly distributed in front of the K-direction side of the cylindrical body 107', and is limited to In the radial cylindrical hole 106', the expansion head is particularly suitable for the subsidy tube, and the tension force overcomes the compression bomb when the patch tube blocks the expansion head from advancing. The pressure of the spring 103', the inclined surface or the involute curved surface of the cylinder 107' pushes the steel ball 102' to move in the centrifugal direction along the radial cylindrical hole 106', and the steel ball 102' extends out of the expansion head housing 104'. At the tube, when the subsidy tube can smoothly pass through the inflation head housing 104' after being expanded, the compression spring 103' is reset, and the steel ball 102 is retracted into the expansion head housing 104.
实施例 3 Example 3
如图 5本发明所用另一设备的结构示意图所示， 井下胀压装置被油管 5"直接下入到 套管 6"变形或待补贴处， 自下而上依序由变径胀压头 1"、增压缸 2"、 套管锚 3"连接在一 起组成，控制套管锚 3"錨固且对胀压头 1"起到推动和拉回作用的油管 5"与套管锚 3"连接 后再与增压缸 2"连接， 油管 5"上设有控制用的泄油器 13"和安全接头 14"。当井下胀压装 置下入到套管 6"变形或套管待补贴部位时， 动力液使套管锚 3"锚固在套管 6"上,增压缸 2"在动力液的作用下推动变径胀压头 1"变径，胀开变形套管 6"或补贴管。油管 5"上端与 耐压软管 4"连接。 其中， 胀压头 1"的结构与实施例 1相同。 As shown in the structural diagram of another apparatus used in the present invention, the downhole expansion device is directly deformed into the casing 6 by the oil pipe 5", or is to be subsidized, and the pressure expansion head 1 is sequentially changed from bottom to top. ", the booster cylinder 2", the casing anchor 3" are connected together, and the control casing anchor 3" is anchored and the oil pipe 5" which pushes and pulls back the expansion head 1" is connected with the casing anchor 3" Then connected to the booster cylinder 2", the oil pipe 5" is provided with a drain 13" and a safety joint 14" for control. When the downhole expansion device is lowered into the casing 6" deformation or casing to be subsidized The power fluid causes the casing anchor 3 to be anchored on the casing 6", and the boosting cylinder 2" pushes the variable diameter expansion head 1" to reduce the diameter, expands the deformation sleeve 6" or subsidizes the tube under the action of the power liquid. The upper end of the oil pipe 5" is connected to the pressure resistant hose 4". The structure of the expansion head 1" is the same as that of the first embodiment.
考虑到胀压装置应具有安全环保的技术特点， 故设计了泄油管 18"和安全接头 19"。 其工作原理是： 当胀压工作完成时， 胀压装置被提上井口前， 泄油器 13"泄油， 以防止 喷油， 保证胀压器环保操作。 同时， 当受到阻力不能顺利提升胀压装置时， 因安全接头 14"与油管 5"采用螺旋连接， 可通过旋动油管 5"， 先将部份胀压装置提出井口。 Considering that the expansion device should have the technical characteristics of safety and environmental protection, the drain pipe 18" and the safety joint 19" are designed. The working principle is as follows: When the expansion and pressure work is completed, before the expansion and contraction device is lifted to the wellhead, the oil drainer 13" drains oil to prevent oil injection and ensure the environmental protection operation of the expander. At the same time, when the resistance is not improved, the expansion can not be smoothly improved. When the device is pressed, because the safety joint 14" is connected with the oil pipe 5" by screwing, the partial expansion device can be raised to the wellhead by rotating the oil pipe 5".
实施例 4 Example 4
在本实施例中，用于液压变径套管胀压方法的设备的结构与实施例 3相同，而胀压头 的内部结构则与实施例 2相同， 只是如附图 6为嵌装有小球的胀压头示意图所示， 所述胀 压头 1 "，的锥形头部嵌装有减小摩擦用的钢球 108"'。
In the present embodiment, the structure of the apparatus for the hydraulic reduction sleeve expansion method is the same as that of the embodiment 3, and the internal structure of the expansion head is the same as that of the embodiment 2, except that it is embedded as shown in Fig. 6. As shown in the schematic diagram of the expansion head of the ball, the tapered head of the expansion head 1" is fitted with a steel ball 108"' for reducing friction.
Claims
1、一种液压变径套管胀压方法，利用液压变化实现变径的胀压头， 置于套管变形或待补 贴处，使胀压头进行膨胀、收缩的动作， 实现胀压后的套管内径不小于套管的标准通径。1. A method for expanding the pressure of a hydraulic reducer casing, which uses a hydraulic pressure change to realize a variable diameter expansion head, which is placed in the deformation of the casing or to be subsidized, so that the expansion head is expanded and contracted, and the expansion pressure is realized. The inner diameter of the casing is not less than the standard diameter of the casing.
2、 一种用于权利要求 1所述液压变径套管胀压方法的设备， 由井下胀压装置、 提供液压 变化的液压泵、 接在液压泵上输送液体的耐压管和运送胀压装置的传送机构组成。 2. An apparatus for use in a method of expanding a pressure of a hydraulic reducer casing according to claim 1, comprising a downhole expansion device, a hydraulic pump providing hydraulic pressure, a pressure tube for conveying liquid on the hydraulic pump, and a delivery expansion pressure The transmission mechanism of the device.
3、 根据权利要求 2所述的用于液压变径套管胀压方法的设备， 其特征在于： 所述的井下 胀压装置被一根钢丝绳直接下入到套管变形或待补贴处， 自下而上依序由变径胀压头、 双向液压缸、 套管锚连接在一起组成， 其中， 一根耐压软管连接套管锚， 双向液压缸连 接了二根分别对胀压头起到推动和拉回作用的耐压管， 当井下胀压装置下入到套管变形 或套管待补贴部位时， 动力液使套管锚固定在套管上， 双向液压缸在动力液的作用下推 动变径胀压头变形， 胀开变形套管或补贴管。 3. The apparatus for a hydraulic reducer casing expansion method according to claim 2, wherein: said downhole expansion device is directly driven into a casing deformation or to be subsidized by a wire rope, The bottom up is composed of a variable diameter expansion head, a bidirectional hydraulic cylinder, and a casing anchor. Among them, one pressure hose is connected to the casing anchor, and the two-way hydraulic cylinder is connected to the two respectively. To the pressure-resistant pipe for pushing and pulling back, when the downhole expansion device is lowered into the casing deformation or the casing to be subsidized, the power fluid fixes the casing anchor on the casing, and the two-way hydraulic cylinder acts on the power fluid Under the push, the deformation of the expansion head is deformed, and the deformation sleeve or the subsidy tube is expanded.
4、 根据权利要求 2所述的用于液压变径套管胀压方法的设备， 其特征在于： 所述的传送 机构由绞车， 及其带动的与井下胀压装置连接的钢丝绳组成。 4. The apparatus for a hydraulic reducer casing expansion method according to claim 2, wherein: said conveying mechanism is composed of a winch and a wire rope connected thereto and connected to the downhole expansion device.
5、 根据权利要求 3所述的用于液压变径套管胀压方法的设备， 其特征在于： 所述的变径 胀压头有锥形头部的胀压头外壳（104)，胀压头外壳外径等于套管标准通径,锥形头部上 方有压缩弹簧（103)，在中心部位自下而上排列有钢球（101 )、钢球（101 )间有垫块（105)， 钢球 （102) 环列均布在钢球 （101 ) 的 K向侧前方并被限位于径向圆柱孔 （106) 内， 当 变形套管或补贴管阻挡胀压头前进时， K向推力或拉力克服压缩弹簧 （103) 的压力， 钢 球（101 ) 推动钢球 （102) 沿径向圆柱孔 （106) 向离心方向运动， 钢球（102)伸出胀 压头外壳（104)直接胀压变形套管或补贴管处， 当套管或补贴管经胀压后能顺利通过胀 压头外壳 ( 104) 时， 压缩弹簧 ( 103)复位， 钢球 ( 102) 缩回胀压头外壳内。 5. The apparatus for a hydraulic reducer casing expansion method according to claim 3, wherein: said variable diameter expansion head has a conical head expansion head casing (104), and a pressure expansion The outer diameter of the head casing is equal to the standard diameter of the casing, and there is a compression spring (103) above the cone head, and a steel ball (101) is arranged from the bottom to the center, and a spacer (105) is arranged between the steel balls (101). The steel ball (102) is evenly distributed in front of the K-direction side of the steel ball (101) and is confined in the radial cylindrical hole (106). When the deformation sleeve or the subsidy tube blocks the expansion head, the K-direction The thrust or pulling force overcomes the pressure of the compression spring (103), the steel ball (101) pushes the steel ball (102) to move in the centrifugal direction along the radial cylindrical hole (106), and the steel ball (102) extends out of the expansion head housing (104) Direct expansion and deformation of the casing or subsidy pipe, when the casing or subsidy pipe can pass through the expansion head casing (104) after inflation, the compression spring (103) is reset, and the steel ball (102) is retracted to the expansion head. Inside the enclosure.
6、 根据权利要求 5所述的用于液压变径套管胀压方法的设备， 其特征在于： 钢球 （101 )
是均布有若干个斜面或渐开曲面的圆柱体。 6. Apparatus for a hydraulic reducer casing expansion method according to claim 5, wherein: the steel ball (101) It is a cylinder that is evenly distributed with several beveled or involute curved surfaces.
7、 根据权利要求 6所述的用于液压变径套管胀压方法的设备， 其特征在于： 所述圆柱体 与垫块 （105) 为一个整体 7. Apparatus for a hydraulic reducer casing expansion method according to claim 6, wherein: said cylinder and spacer (105) are integral
8、 根据权利要求 3所述的用于液压变径套管胀压方法的设备， 其特征在于： 井下胀压装 置中的变径胀压头与双向液压缸之间， 以及双向液压缸与套管锚之间柔性连接， 都有小 于直角的自由摆动， 在遇到套管弯曲时自动找通道。 8. The apparatus for a hydraulic reducer casing expansion method according to claim 3, wherein: the variable diameter expansion head and the two-way hydraulic cylinder in the downhole expansion device, and the two-way hydraulic cylinder and the sleeve The flexible connection between the pipe anchors has a free swing smaller than a right angle, and the channel is automatically found when the casing is bent.
9、根据权利要求 3所述的用于液压变径套管胀压方法的设备，其特征在于：所述的变径胀 压头有锥形头部的胀压头外壳 （104'), 胀压头外壳外径等于套管的标准通径，锥形头部 上方有压缩弹簧（103，）， 在其中心部位均布有若干个斜面或渐开曲面的圆柱体（107，）， 圆柱体 （107') 与牵引棒连接为一体， 钢球 （102' ) 环列均布在圆柱体 （107') 的 K向侧 前方并被限位于径向圆柱孔 （106') 内， 当补贴管阻挡胀压头前进时， 拉力克服压缩弹 簧 （103') 的压力， 圆柱体 （107') 的斜面或渐开曲面推动钢球 （102')沿径向圆柱孔 9. The apparatus for a hydraulic reducer casing expansion method according to claim 3, wherein said variable diameter expansion head has a conical head expansion head casing (104'), which is inflated The outer diameter of the indenter shell is equal to the standard diameter of the casing, and there is a compression spring (103,) above the conical head, and a plurality of inclined or involute curved cylinders (107,) are arranged at the center thereof, the cylinder (107') is integrated with the tow bar. The steel ball (102') ring is evenly distributed in front of the K-direction side of the cylinder (107') and is confined in the radial cylindrical hole (106'). When the expansion head is blocked, the pulling force overcomes the pressure of the compression spring (103'), and the inclined surface or the involute surface of the cylinder (107') pushes the steel ball (102') along the radial cylindrical hole.
(106，) 向离心方向运动， 钢球 (102，) 伸出胀压头外壳 (104，) 直接胀压补贴套管处， 当补贴管经胀压后能顺利通过胀压头外壳（104' )时，压缩弹簧（103，）复位，钢球（102' ) 缩回壳内。 (106,) moving in the direction of the centrifugal direction, the steel ball (102,) extends out of the expansion head housing (104,) directly into the subsidized casing, and when the subsidy tube is expanded, it can smoothly pass through the expansion head casing (104' When the compression spring (103,) is reset, the steel ball (102') is retracted into the casing.
10、根据权利要求 2所述的用于液压变径套管胀压方法的设备，其特征在于： 所述的井下 胀压装置被油管直接下入到套管变形或待补贴处， 自下而上依序由变径胀压头 （1")、 增压缸 （2")、 套管锚 （3") 连接在一起组成， 其中， 控制套管锚 （3")锚固且对胀压 头起到推动和拉回作用的油管 （5") 与套管锚 （3")连接后再与增压缸 （2")连接， 油 管 （5")上设有泄油器 （13")， 当井下胀压装置下入到套管变形或套管待补贴部位时， 动力液使套管锚 （3") 锚固在套管上,增压缸 （2") 在动力液的作用下推动变径胀压头 10. The apparatus for a hydraulic reducer casing expansion method according to claim 2, wherein: said downhole expansion device is directly pushed into the casing deformation or to be subsidized by the oil pipe, and The upper step consists of a variable diameter expansion head (1"), a booster cylinder (2"), and a casing anchor (3"), wherein the control casing anchor (3") is anchored and the expansion head is The oil pipe (5") that pushes and pulls back is connected to the casing anchor (3") and then connected to the booster cylinder (2"). The oil pipe (5") is provided with an oil drain (13"). When the downhole expansion device is lowered into the casing deformation or the casing to be subsidized, the power fluid anchors the casing anchor (3") to the casing, and the booster cylinder (2") pushes under the action of the power fluid. Diameter expansion head
(1") 变径， 胀开变形套管或补贴管。 (1") Reducing, expanding the deformation sleeve or subsidizing tube.
11、 根据权利要求 10所述的用于液压变径套管胀压方法的设备， 其特征在于： 油管上设
有安全接头 (14"), 该安全接头 (14") 设在油管 (5，，) 与泄油器 (13") 之间。 11. The apparatus for a hydraulic reducer casing expansion method according to claim 10, wherein: the oil pipe is provided There is a safety joint (14"), which is located between the oil pipe (5,,) and the oil drain (13").
12、根据权利要求 10或 11所述的用于液压变径套管胀压方法的设备,其特征在于：变径胀 压头外壳（104")外径大于井下胀压装置中的其它部分的外径,其长度大于增压缸（2") 与套管锚 (3") 之和。 12. Apparatus for a hydraulic reducer casing expansion process according to claim 10 or claim 11 wherein the outer diameter of the variable expansion head housing (104") is greater than the remainder of the downhole expansion device The outer diameter is greater than the sum of the booster cylinder (2") and the casing anchor (3").
13、根据权利要求 12所述的用于液压变径套管胀压方法的设备,其特征在于：增压缸（2") 与套管锚 （3") 无摆动连接。 13. Apparatus for a hydraulic reducer casing expansion process according to claim 12, wherein the booster cylinder (2") is non-swingingly coupled to the casing anchor (3").
14、根据权利要求 5或 9或 10所述的用于液压变径套管胀压方法的设备，其特征在于：所述 胀压头的锥形头部嵌装有减小摩擦用的小球 （108'")。
14. Apparatus for a hydraulic reducer casing expansion method according to claim 5 or 9 or 10, wherein the tapered head of the expansion head is fitted with a ball for reducing friction (108'").
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610023757.8 | 2006-02-06 | ||
| CN 200610023757 CN1807830B (en) | 2006-02-06 | 2006-02-06 | Hydraulic diameter-variable casing expansion method and apparatus therefor |
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| WO2007090338A1 true WO2007090338A1 (en) | 2007-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/CN2007/000356 WO2007090338A1 (en) | 2006-02-06 | 2007-02-02 | A hydraulic diameter variable casing expansion method and apparatus |
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| CN (1) | CN1807830B (en) |
| WO (1) | WO2007090338A1 (en) |
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| WO2010072751A3 (en) * | 2008-12-24 | 2011-03-10 | Shell Internationale Research Maatschappij B.V. | Expanding a tubular element in a wellbore |
| CN106567687A (en) * | 2015-10-12 | 2017-04-19 | 中石化石油工程技术服务有限公司 | Top-down expandable casing expansion method for deep well |
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| CN112727394A (en) * | 2019-10-28 | 2021-04-30 | 中国石油化工股份有限公司 | Coiled tubing hydraulic workover string and method |
| CN116066001A (en) * | 2021-11-03 | 2023-05-05 | 中国石油天然气股份有限公司 | Hydraulic shaping method for sleeve-type well |
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| CN102305053B (en) * | 2011-08-28 | 2013-09-04 | 中国石油集团长城钻探工程有限公司 | Two-stage hydraulic reducing expansion tool |
| CN111636840B (en) * | 2020-06-24 | 2022-06-03 | 松原市永久石油技术服务有限公司 | Reducing rolling type expansion pipe column and using method thereof |
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- 2007-02-02 WO PCT/CN2007/000356 patent/WO2007090338A1/en active Application Filing
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010072751A3 (en) * | 2008-12-24 | 2011-03-10 | Shell Internationale Research Maatschappij B.V. | Expanding a tubular element in a wellbore |
| US8726985B2 (en) | 2008-12-24 | 2014-05-20 | Enventure Global Technology, Llc | Expanding a tubular element in a wellbore |
| CN106567687A (en) * | 2015-10-12 | 2017-04-19 | 中石化石油工程技术服务有限公司 | Top-down expandable casing expansion method for deep well |
| CN112727394A (en) * | 2019-10-28 | 2021-04-30 | 中国石油化工股份有限公司 | Coiled tubing hydraulic workover string and method |
| CN112727394B (en) * | 2019-10-28 | 2023-01-13 | 中国石油化工股份有限公司 | Coiled tubing hydraulic workover string and method |
| CN110608007A (en) * | 2019-10-31 | 2019-12-24 | 西安石油大学 | Rotary propelling type hydraulic ball sleeve shaper |
| CN110608007B (en) * | 2019-10-31 | 2023-06-20 | 西安石油大学 | Rotary push type hydraulic ball sleeve shaper |
| CN116066001A (en) * | 2021-11-03 | 2023-05-05 | 中国石油天然气股份有限公司 | Hydraulic shaping method for sleeve-type well |
| CN116066001B (en) * | 2021-11-03 | 2024-04-26 | 中国石油天然气股份有限公司 | Hydraulic shaping method for sleeve-type well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1807830B (en) | 2011-07-06 |
| CN1807830A (en) | 2006-07-26 |
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