CN108625780A - A kind of eccentric location device suitable for radial bore - Google Patents
A kind of eccentric location device suitable for radial bore Download PDFInfo
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- CN108625780A CN108625780A CN201710176783.2A CN201710176783A CN108625780A CN 108625780 A CN108625780 A CN 108625780A CN 201710176783 A CN201710176783 A CN 201710176783A CN 108625780 A CN108625780 A CN 108625780A
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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Abstract
本发明涉及石油天然气采油作业工具领域，是一种适于径向钻孔的偏心定位装置，包括上下依次连接的钻孔转向器1、偏心接头6，其中，钻孔转向器1配套有钻头扶正套2，所述的偏心接头6上下接头不在一条轴线上，是一个偏心结构；在钻孔转向器1和偏心接头6之间还相连有活接头3；所述活接头3包括与钻孔转向器1建立连接的上接头和与偏心接头6建立连接的下接头，且上、下接头之间通过止转垫片4和紧定螺钉5构成旋转定位锁定。该装置能够有效利用适用于小尺寸套管的转向器，在大尺寸套管内径向钻孔时无需更换转向器，通过偏心定位装置使钻头扶正套贴近大尺寸套管壁，完成径向钻孔施工。
The present invention relates to the field of oil and gas production tools, and is an eccentric positioning device suitable for radial drilling, including a drilling diverter 1 and an eccentric joint 6 connected up and down in sequence, wherein the drilling diverter 1 is equipped with a drill bit righting Sleeve 2, the upper and lower joints of the eccentric joint 6 are not on the same axis, and are an eccentric structure; a live joint 3 is also connected between the drilling diverter 1 and the eccentric joint 6; The upper joint that establishes the connection with the device 1 and the lower joint that establishes the connection with the eccentric joint 6, and the rotation positioning lock is formed by the anti-rotation washer 4 and the set screw 5 between the upper and lower joints. The device can effectively utilize the steering gear suitable for small-sized casings, and there is no need to replace the steering gear when drilling radially in large-sized casings. The eccentric positioning device makes the drill bit centering sleeve close to the wall of large-sized casings to complete radial drilling construction.
Description
技术领域technical field
本发明的偏心定位装置涉及油层套管钻孔领域，钻孔后通过水力作用使软管通过所钻的套管孔进入油层，建立起油流通道。具体地，本发明使径向钻孔工具在大尺寸油层套管中，依旧能够使钻头扶正套紧贴油层套管，便于油层套管钻孔。The eccentric positioning device of the present invention relates to the field of oil layer casing drilling. After drilling, the hose is driven into the oil layer through the drilled casing hole through hydraulic action to establish an oil flow channel. Specifically, the present invention enables the radial drilling tool to be used in large-sized oil layer casings, and the drill bit centralizing sleeve can still be tightly attached to the oil layer casing, which is convenient for oil layer casing drilling.
背景技术Background technique
径向钻孔技术是油气井增产的一项重要措施，对于低渗透油气藏的增产改造中有很好的效果。通常适用于套管径向钻孔的转向器，在径向钻孔过程中，钻头扶正套需要一直紧贴套管壁，这样才能在套管上钻孔。但是在大尺寸套管内进行径向钻孔施工时，由于套管内径增大，钻头扶正套不能贴近套管，原有径向钻孔工具无法适用于大尺寸套管内施工。Radial drilling technology is an important measure to increase production of oil and gas wells, and it has a good effect on stimulation of low permeability oil and gas reservoirs. It is usually suitable for diverters for casing radial drilling. During the radial drilling process, the drill bit centering sleeve needs to be close to the casing wall all the time, so that holes can be drilled on the casing. However, when radial drilling is carried out in a large-size casing, due to the increase in the inner diameter of the casing, the drill bit centering sleeve cannot be close to the casing, and the original radial drilling tool cannot be used for construction in a large-size casing.
通常的解决该方法是更换大尺寸径向钻孔转向器，但是该方法不能有效利用现有的小尺寸转向器，造成浪费。The usual solution to this problem is to replace the large-size radial drilling diverter, but this method cannot effectively utilize the existing small-size diverter, resulting in waste.
发明内容Contents of the invention
本发明的目的针对现有技术存在的问题，提供一种适用于不同尺寸的套管内径进行钻孔施工的适于径向钻孔的偏心定位装置。使用该偏心定位装置，在无需更换转向器的情况下完成不同尺寸套管的径向钻孔施工，为大尺寸的套管内径向钻孔施工提供一种简单有效的装置。The object of the present invention aims at the problems existing in the prior art, and provides an eccentric positioning device suitable for radial drilling, which is suitable for drilling construction with different sizes of casing inner diameters. Using the eccentric positioning device, the radial drilling construction of casings of different sizes can be completed without changing the steering gear, and a simple and effective device is provided for the radial drilling construction of large-sized casings.
为了实现上述目的，本发明采取以下技术方案：In order to achieve the above object, the present invention takes the following technical solutions:
一种适于径向钻孔的偏心定位装置，包括上下依次连接的钻孔转向器1、偏心接头6，其中，钻孔转向器1配套有钻头扶正套2，所述的偏心接头6上下接头不在一条轴线上，是一个偏心结构；在钻孔转向器1和偏心接头6之间还相连有活接头3；所述活接头3包括与钻孔转向器1建立连接的上接头和与偏心接头6建立连接的下接头，且上、下接头之间通过止转垫片4和紧定螺钉5构成旋转定位锁定。An eccentric positioning device suitable for radial drilling, comprising a drilling diverter 1 and an eccentric joint 6 connected up and down sequentially, wherein the drilling diverter 1 is equipped with a drill bit centering sleeve 2, and the eccentric joint 6 is connected up and down Not on one axis, it is an eccentric structure; a live joint 3 is also connected between the drilling diverter 1 and the eccentric joint 6; 6. Establish the connected lower joint, and the rotation positioning lock is formed by the anti-rotation washer 4 and the set screw 5 between the upper and lower joints.
止转垫片4的结构包括上、下两个面和两个面上相互咬合的钳牙。The structure of the anti-rotation washer 4 includes two upper and lower surfaces and jaw teeth that engage with each other on the two surfaces.
钳牙形状包括梯形或三角锥形。Jaw shape includes trapezoid or triangular cone.
本发明的装置主要由钻孔转向器、钻头扶正套、活接头、止转垫片、紧定螺钉和偏心接头等部件构成。在钻孔转向器和偏心接头之间增设活接头，松开紧定螺钉和止转垫片，调节活接头，使偏心接头的偏心侧与钻头扶正套在一个方向对齐，上紧紧定螺钉。The device of the present invention is mainly composed of a drilling diverter, a drill bit centralizing sleeve, a movable joint, a stop washer, a set screw, an eccentric joint and the like. Add a live joint between the drilling diverter and the eccentric joint, loosen the set screw and the anti-rotation washer, adjust the live joint so that the eccentric side of the eccentric joint is aligned with the drill bit centering sleeve in one direction, and tighten the set screw.
本发明的优点在于：在无需更换转向器的情况实现钻头扶正套在大尺寸套管内贴近套管壁，完成不同尺寸套管的径向钻孔施工，降低施工成本，提高转向器适用范围。The invention has the advantages of realizing that the drill bit centralizing sleeve is close to the casing wall in the large-size casing without changing the steering gear, completing the radial drilling construction of casings of different sizes, reducing the construction cost, and increasing the application range of the steering gear.
附图说明Description of drawings
图1是一种适于径向钻孔的偏心定位装置结构示意图；Fig. 1 is a kind of structural schematic diagram of the eccentric positioning device suitable for radial drilling;
其中1钻孔转向器，2钻头扶正套，3活接头，4止转垫片，5紧定螺钉，6偏心接头，7套管，8油管锚。Among them, 1 drilling diverter, 2 drill bit centralizing sleeve, 3 union, 4 anti-rotation washer, 5 set screw, 6 eccentric joint, 7 casing, 8 tubing anchor.
图2是止转垫片的钳牙形状示意图；Fig. 2 is a schematic diagram of the jaw shape of the anti-rotation gasket;
止转垫片两面上的钳牙有多种齿形，有梯形牙齿或者三角形牙齿。The jaws on both sides of the anti-rotation spacer have various tooth shapes, such as trapezoidal teeth or triangular teeth.
具体实施方式Detailed ways
下面结合附图说明中的图1对本发明做进一步说明。The present invention will be further described below in conjunction with Fig. 1 in the description of the drawings.
在图1中所示的是一种适于径向钻孔的偏心定位装置，包括自上而下依次连接的钻孔转向器1、偏心接头6和油管锚8，其中，钻孔转向器1配套有钻头扶正套2，所述的偏心接头6上下接头不在一条轴线上，是一个偏心结构；在钻孔转向器1和偏心接头6之间还相连有活接头3；所述活接头3包括与钻孔转向器1建立连接的上接头和与偏心接头6建立连接的下接头，且上、下接头之间通过止转垫片4和紧定螺钉5构成旋转定位锁定。What is shown in Figure 1 is an eccentric positioning device suitable for radial drilling, including a drilling diverter 1, an eccentric joint 6 and a tubing anchor 8 connected sequentially from top to bottom, wherein the drilling diverter 1 It is equipped with a drill bit centering sleeve 2, and the upper and lower joints of the eccentric joint 6 are not on the same axis, which is an eccentric structure; a live joint 3 is also connected between the drilling diverter 1 and the eccentric joint 6; the live joint 3 includes The upper joint connected with the drilling diverter 1 and the lower joint established with the eccentric joint 6, and the rotation positioning lock is formed by the anti-rotation washer 4 and the set screw 5 between the upper joint and the lower joint.
止转垫片4的结构包括上、下两个面和两个面上相互咬合的钳牙。The structure of the anti-rotation washer 4 includes two upper and lower surfaces and jaw teeth that engage with each other on the two surfaces.
钳牙形状包括一字梯形或三角锥形。The shape of jaws includes straight trapezoid or triangular cone.
一种适于径向钻孔的偏心定位装置的定位过程为：将钻孔转向器和偏心接头相连，偏心接头下方接油管锚；连接好后，观察钻头扶正套与偏心接头偏心侧是否在一个方向上；若不在一个方向上，松开紧定螺钉，调节活接头，使偏心接头的偏心侧与钻头扶正套在一个方向对齐，上紧紧定螺钉，通过止转垫片使其固定。下钻到预定井深，坐挂油管锚，套管钻孔。The positioning process of an eccentric positioning device suitable for radial drilling is as follows: connect the drilling diverter with the eccentric joint, and connect the oil pipe anchor under the eccentric joint; If it is not in one direction, loosen the set screw and adjust the joint so that the eccentric side of the eccentric joint is aligned with the drill bit centering sleeve in one direction, then tighten the set screw and fix it through the anti-rotation washer. Drill down to the predetermined well depth, install the tubing anchor, and drill the casing.
上述实施例的偏心定位装置能够实现在无需更换大尺寸的径向钻孔转向器的情况下，能够有效利用现有的径向钻孔的转向器，使其适用不同尺寸的套管径向钻孔施工。The eccentric positioning device of the above embodiment can effectively utilize the existing radial drilling diverter without replacing the large-sized radial drilling diverter, making it suitable for casing radial drills of different sizes hole construction.
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| CN201710176783.2A CN108625780B (en) | 2017-03-23 | 2017-03-23 | An eccentric positioning device suitable for radial drilling |
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| CN201710176783.2A CN108625780B (en) | 2017-03-23 | 2017-03-23 | An eccentric positioning device suitable for radial drilling |
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| CN108625780A true CN108625780A (en) | 2018-10-09 |
| CN108625780B CN108625780B (en) | 2024-02-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027343A (en) * | 2021-04-12 | 2021-06-25 | 西华大学 | An eccentric rotary positioning tool |
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| CN104481399A (en) * | 2014-11-20 | 2015-04-01 | 西南石油大学 | Near-bit well track control tool and control method thereof |
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| CN206769809U (en) * | 2017-03-23 | 2017-12-19 | 中石化石油工程技术服务有限公司 | A kind of eccentric location device suitable for radial bore |
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2017
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5040619A (en) * | 1990-04-12 | 1991-08-20 | Halliburton Logging Services, Inc. | Wireline supported perforating gun enabling oriented perforations |
| CN202023504U (en) * | 2011-01-31 | 2011-11-02 | 中国石油化工集团公司 | Rotary eccentric casing drilling device |
| CN102135011A (en) * | 2011-02-15 | 2011-07-27 | 上海宏睿油气田径向井技术服务有限公司 | Device for pumping coal bed gas through underground radial drilling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027343A (en) * | 2021-04-12 | 2021-06-25 | 西华大学 | An eccentric rotary positioning tool |
| CN113027343B (en) * | 2021-04-12 | 2023-09-29 | 定边县泽林石油工程有限公司 | Eccentric rotary positioning tool |
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Effective date of registration: 20250513 Address after: Room 1202, No. 22 Chaoyangmen North Street, Chaoyang District, Beijing, 100728 Patentee after: Sinopec Petroleum Engineering Technology Service Co.,Ltd. Country or region after: China Patentee after: Sinopec Shengli Petroleum Engineering Co., Ltd. Patentee after: Sinopec Shengli Petroleum Engineering Co., Ltd. Drilling Technology Research Institute Address before: 100101 Beijing, Beichen West Road, No. 8 Beichen world center, block A, No. 703, No. Patentee before: SINOPEC OILFIELD SERVICE Corp. Country or region before: China Patentee before: Sinopec Shengli Petroleum Engineering Co., Ltd. Patentee before: Sinopec Shengli Petroleum Engineering Co., Ltd. Drilling Technology Research Institute |