CN104314509A - Deep drill hole pressure measuring and blocking method and device - Google Patents
Deep drill hole pressure measuring and blocking method and device Download PDFInfo
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- CN104314509A CN104314509A CN201410527523.1A CN201410527523A CN104314509A CN 104314509 A CN104314509 A CN 104314509A CN 201410527523 A CN201410527523 A CN 201410527523A CN 104314509 A CN104314509 A CN 104314509A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000000903 blocking effect Effects 0.000 title 1
- 229920001971 elastomer Polymers 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 33
- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 26
- 229920002635 polyurethane Polymers 0.000 claims abstract description 23
- 239000004814 polyurethane Substances 0.000 claims abstract description 23
- 238000009423 ventilation Methods 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 5
- 239000002775 capsule Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000512259 Ascophyllum nodosum Species 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
- E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
本发明涉及一种深钻孔测压封堵方法及装置，包括以下步骤：1)设置一分开放置有聚氨酯A、B料的圆筒，在圆筒中穿设一瓦斯采集管，在瓦斯采集管的一伸出端连通一瓦斯进气头，且在该端的圆筒和瓦斯采集管上连接一橡胶套；在圆筒两端设置分别连通聚氨酯A、B料的通气管，其中一侧的通气管位于橡胶套内；2)将圆筒、橡胶套及瓦斯进气头插入钻孔至预定深度；3)将留在钻孔外端的瓦斯采集管和通气管分别连通瓦斯压力测定仪表和压力气源；4)启动压力气源，压力气体将聚氨酯A、B料挤压进入橡胶套混合反应封堵住钻孔；5)从瓦斯进气头进入的瓦斯气体通过瓦斯采集管进入瓦斯压力测定仪表。本发明结构简单，它可以广泛应用于深钻孔测压封堵过程中。
The invention relates to a method and device for pressure measurement and plugging of deep boreholes, comprising the following steps: 1) setting a cylinder separately placed with polyurethane materials A and B, and installing a gas collection pipe in the cylinder; One protruding end of the cylinder is connected to a gas inlet head, and a rubber sleeve is connected to the cylinder at this end and the gas collection pipe; ventilation pipes connected to polyurethane A and B materials are arranged at both ends of the cylinder, and the ventilation pipe on one side Located in the rubber sleeve; 2) Insert the cylinder, rubber sleeve and gas inlet head into the drill hole to a predetermined depth; 3) Connect the gas collection pipe and the ventilation pipe left at the outer end of the borehole to the gas pressure measuring instrument and the pressure gas source respectively ; 4) Start the pressure gas source, and the pressure gas squeezes the polyurethane materials A and B into the rubber sleeve to mix and react to seal the drill hole; 5) The gas gas entering from the gas inlet head enters the gas pressure measuring instrument through the gas collection pipe. The invention has a simple structure and can be widely used in the process of pressure measurement and plugging of deep boreholes.
Description
技术领域technical field
本发明涉及一种钻孔测压封堵方法及装置，特别是关于一种深钻孔测压封堵方法及装置。The invention relates to a method and device for pressure measurement and plugging of boreholes, in particular to a method and device for pressure measurement and plugging of deep boreholes.
背景技术Background technique
瓦斯压力是煤层中最基础的参数之一，目前，煤层瓦斯压力的测定有两种方法：一种是液体封孔法，其封孔长度大约为15m左右，适用于测压钻孔长度20m之内，其是通过两段胶囊封堵中间一段液体，由液体封堵测压室中瓦斯气体，本方法在钻孔过深时，测压室会留得过大，造成测压平衡时间很长；另一种是固体封孔法，适用于深钻孔测压，其是通过水泥浆等无机材料或高分子发泡材料密封测压钻孔，其主要问题之一是测压钻孔最里段需要形成可靠的堵头，以避免后续注浆时浆液在压力作用下，越过堵头阻塞瓦斯进气头，造成测压失败。常用的形成测压钻孔最里端堵头的方法有挡板缠绕棉纱，挡板缠绕海带，毛巾缠绕聚氨酯和注水胶囊等。挡板缠绕棉纱和挡板缠绕海带由于本身材料的膨胀能力有限，难以密封住钻孔；毛巾缠绕聚氨酯由于材料反应较快(不超过5分钟)，来不及送到深钻孔最里段；注水胶囊通过加水压膨胀密封钻孔，比较可靠，但对钻孔壁要求较高(光滑平整)，并且胶囊价格昂贵，结构复杂。Gas pressure is one of the most basic parameters in coal seams. At present, there are two methods for measuring the gas pressure of coal seams: one is the liquid sealing method, and the length of the hole sealing is about 15m, which is suitable for pressure measurement drilling with a length of less than 20m. Inside, the middle section of liquid is blocked by two sections of capsules, and the gas in the pressure measurement chamber is blocked by the liquid. When the drilling is too deep, the pressure measurement chamber will be too large, resulting in a long time for pressure measurement balance The other is the solid hole sealing method, which is suitable for deep drilling pressure measurement. It is to seal the pressure measurement drilling hole with inorganic materials such as cement slurry or polymer foam materials. One of the main problems is that the innermost part of the pressure measurement drilling hole is The section needs to form a reliable plug to prevent the grout from passing over the plug to block the gas inlet head under the action of pressure during the subsequent grouting, resulting in pressure measurement failure. Commonly used methods for forming the innermost plug of the piezometric borehole include wrapping cotton yarn around the baffle, wrapping kelp around the baffle, wrapping polyurethane with a towel, and water-injected capsules. Cotton yarn wrapped around baffles and kelp wrapped around baffles are difficult to seal the drill hole due to the limited expansion capacity of their own materials; polyurethane wrapped with towels has a fast material response (less than 5 minutes), and it is too late to be sent to the innermost section of deep drilling; water-filled capsules It is more reliable to seal the borehole by adding water pressure to expand, but it has higher requirements on the borehole wall (smooth and flat), and the capsule is expensive and has a complicated structure.
发明内容Contents of the invention
针对上述问题，本发明的目的是提供一种膨胀性能好、膨胀时间可控、且能够实现深钻孔里段任意位置的可靠封堵的深钻孔测压封堵方法及装置。In view of the above problems, the purpose of the present invention is to provide a deep borehole pressure measurement plugging method and device with good expansion performance, controllable expansion time, and reliable plugging of any position in the deep borehole.
为实现上述目的，本发明采取以下技术方案：一种深钻孔测压封堵方法，包括以下步骤：1)设置一分开放置有聚氨酯A料和B料的圆筒，在圆筒中穿设一瓦斯采集管，在瓦斯采集管的一伸出端连通一瓦斯进气头，且在该端的圆筒和瓦斯采集管上连接一橡胶套；在圆筒两端设置分别连通聚氨酯A料和B料的通气管，其中一侧的通气管位于橡胶套内；2)将圆筒、橡胶套及瓦斯进气头插入瓦斯气体压力测定钻孔至预定深度；3)将留在瓦斯气体压力测定钻孔外端的瓦斯采集管连通瓦斯压力测定仪表，且将留在瓦斯气体压力测定钻孔外端的通气管连接压力气源；4)启动压力气源，压力气体将聚氨酯A料和B料挤压进入橡胶套，混合后的聚氨酯A料和B料在橡胶套中膨胀反应后将瓦斯气体压力测定钻孔封堵住；5)从瓦斯进气头进入的瓦斯气体全部通过瓦斯采集管进入瓦斯压力测定仪表。In order to achieve the above object, the present invention adopts the following technical solutions: a deep drilling pressure measurement plugging method, comprising the following steps: 1) setting a cylinder separately placed with polyurethane A material and B material, and piercing a cylinder in the cylinder The gas collection pipe is connected to a gas inlet head at an extended end of the gas collection pipe, and a rubber sleeve is connected to the cylinder at this end and the gas collection pipe; the two ends of the cylinder are respectively connected to polyurethane material A and B. Ventilation pipe, one side of which is located in the rubber sleeve; 2) insert the cylinder, rubber sleeve and gas inlet head into the gas pressure measurement borehole to a predetermined depth; 3) leave it outside the gas pressure measurement borehole The gas collection pipe at the end is connected to the gas pressure measuring instrument, and the vent pipe left at the outer end of the gas pressure measuring borehole is connected to the pressure gas source; 4) Start the pressure gas source, and the pressure gas squeezes the polyurethane materials A and B into the rubber sleeve After the mixed polyurethane materials A and B expand and react in the rubber sleeve, the gas pressure measurement borehole is blocked; 5) The gas gas entering from the gas inlet head all enters the gas pressure measurement instrument through the gas collection pipe.
一种深钻孔测压封堵装置，其特征在于：它包括一圆筒，所述圆筒内设置有一将聚氨酯A料和B料分开放置的中间隔板；所述圆筒的两端分别通过螺纹固定连接一端盖，两所述端盖上分别设置有一中央孔和位于所述中央孔上、下的两端孔；所述两端盖上的两中央孔之间连接一筒内管，每一所述端盖外的中央孔处连接一筒外管，每一所述端盖外的两端孔处分别连接一尼龙管，且将两所述尼龙管连接在同一三通上，两所述三通的第三个口分别连接一通气管；其中一所述端盖上固定连接一橡胶套的口部，所述橡胶套的底部穿过该端的所述筒外管，且固定在所述筒外管上；所述橡胶套一端的所述筒外管端部连接一瓦斯进气头。A deep drilling pressure measurement and plugging device is characterized in that it includes a cylinder, and a middle partition for separating polyurethane material A and material B is arranged in the cylinder; the two ends of the cylinder are respectively One end cover is fixedly connected by thread, and the two end covers are respectively provided with a central hole and two end holes located above and below the central hole; a tube inner tube is connected between the two central holes on the two end covers, The central hole outside each of the end caps is connected with an outer tube, the two ends of each end cap are respectively connected with a nylon tube, and the two nylon tubes are connected to the same tee, The third ports of the two tees are respectively connected to a ventilation pipe; one of the end caps is fixedly connected to the mouth of a rubber sleeve, and the bottom of the rubber sleeve passes through the outer tube of the end and is fixed on On the outer tube; the end of the outer tube at one end of the rubber sleeve is connected with a gas inlet head.
本发明由于采取以上技术方案，其具有以下优点：1、本发明由于在圆筒一端通过端盖连接一橡胶套，聚氨酯A料和B料在橡胶套内混合膨胀反应，橡胶套膨胀性能好，对钻孔壁适应性强、价格便宜，实现了深钻孔里段的可靠封堵。2、本发明由于采用两端盖和一中间隔板将圆筒构成两封闭空间，聚氨酯A料和B料在圆筒内分别密封保存，可以随时控制压力气体通过两端盖上的通孔挤压A料和B料在橡胶套内混合膨胀反应，解决了封堵装置输送不及时导致的封堵失败。3、本发明由于在圆筒两端分别设置了压气管，且将其中一端连接在橡胶套内，另一端连接至钻孔外，因此可以方便地将本发明封堵装置伸入钻孔任意深度，并将留在钻孔外的压气管连接气源，通过压力将聚氨酯A料和B料快速通入橡胶套，混合膨胀后实现封堵钻孔的目的。4、本发明由于采用卡头将橡胶套固定在一端筒外管上，使得橡胶套只能沿径向膨胀，不会越过堵头堵塞瓦斯进气头造成封孔失败。本发明结构简单，使用方便可靠，它可以广泛应用于深钻孔测压封堵过程中。The present invention has the following advantages due to the adoption of the above technical scheme: 1. In the present invention, a rubber sleeve is connected through an end cap at one end of the cylinder, and the polyurethane material A and material B are mixed and expanded in the rubber sleeve, and the rubber sleeve has good expansion performance. It has strong adaptability to the borehole wall and low price, and realizes the reliable plugging of the inner section of the deep borehole. 2. Because the present invention adopts two end covers and a middle partition to form two closed spaces for the cylinder, the polyurethane materials A and B are separately sealed and stored in the cylinder, and the pressure gas can be squeezed through the through holes on the two end covers at any time. The pressure A material and B material mix and expand in the rubber sleeve, which solves the failure of plugging caused by the untimely delivery of the plugging device. 3. In the present invention, air pressure pipes are respectively provided at both ends of the cylinder, and one end is connected to the rubber sleeve, and the other end is connected to the outside of the borehole, so the plugging device of the present invention can be easily extended into any depth of the borehole , and connect the compressed air pipe left outside the drill hole to the air source, quickly pass the polyurethane material A and B into the rubber sleeve through pressure, and achieve the purpose of sealing the drill hole after mixing and expanding. 4. In the present invention, the clamp is used to fix the rubber sleeve on the outer tube at one end, so that the rubber sleeve can only expand in the radial direction, and will not cross the plug to block the gas inlet head and cause hole sealing failure. The invention has the advantages of simple structure, convenient and reliable use, and can be widely used in the process of pressure measurement and plugging of deep boreholes.
附图说明Description of drawings
图1是本发明结构示意图Fig. 1 is a structural representation of the present invention
图2是图1的Ⅰ-Ⅰ剖面图Figure 2 is a sectional view of I-I in Figure 1
图3是图1的Ⅱ-Ⅱ剖面图Figure 3 is a sectional view of II-II in Figure 1
具体实施方式Detailed ways
下面结合附图和实施例对本发明进行详细的描述。The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
如图1所示，本发明装置包括一圆筒1，圆筒1内部设置一中间隔板2，将圆筒1分为两个相等的空腔，以在两半空腔内分开放置聚氨酯A料和B料。在圆筒1的两端分别通过螺纹固定连接一端盖3，两端盖3上分别设置有一个中央孔4和两个端孔5，且两中央孔4均设置在各自端盖3的中心线偏心向上的位置(如图2所示)，以保证在两中央孔4之间连接一用于采集瓦斯的筒内管6时，不被中间隔板2挡住。每一端盖3上的两端孔5分别位于中央孔4的上、下(如图3所示)。在每一端盖3外侧的中央孔4处连接一用于采集瓦斯的筒外管7，在每一端盖3的两端孔5处分别连接一尼龙管8，并将两尼龙管8连接在同一个三通9上，三通9的第三个口连接一通气管10。在其中一端盖3上通过一卡箍11连接一橡胶套12的口部，橡胶套12的底部穿过该端的筒外管7，通过一卡头13固定在筒外管7上。在橡胶套12一端的筒外管7端部连接一瓦斯进气头14。As shown in Figure 1, the device of the present invention includes a cylinder 1, and a middle partition 2 is arranged inside the cylinder 1, and the cylinder 1 is divided into two equal cavities, so that the polyurethane A material can be placed separately in the two half cavities. and material B. An end cap 3 is fixedly connected to both ends of the cylinder 1 by threads, and a central hole 4 and two end holes 5 are respectively arranged on the two end caps 3, and the two central holes 4 are arranged on the center line of the respective end caps 3 The eccentric upward position (as shown in FIG. 2 ) is to ensure that when connecting an inner tube 6 for collecting gas between the two central holes 4 , it will not be blocked by the middle partition 2 . The holes 5 at both ends of each end cap 3 are respectively located above and below the central hole 4 (as shown in FIG. 3 ). Connect an outer tube 7 for collecting gas at the center hole 4 on the outside of each end cover 3, connect a nylon tube 8 at the two end holes 5 of each end cover 3, and connect the two nylon tubes 8 on the same On a tee 9, the third mouth of the tee 9 is connected with an air pipe 10. One of the end caps 3 is connected to the mouth of a rubber sheath 12 through a clamp 11 , the bottom of the rubber sheath 12 passes through the outer tube 7 at this end, and is fixed on the outer tube 7 by a chuck 13 . A gas inlet head 14 is connected at the end of the tube 7 at one end of the rubber sleeve 12 .
上述实施例中，圆筒1的直径由需要封堵的钻孔直径决定，一般直径为50、75、90、108mm；中央孔4和端孔5的直径范围为5～8mm。In the above-mentioned embodiment, the diameter of the cylinder 1 is determined by the diameter of the borehole to be plugged, generally 50, 75, 90, 108 mm; the diameter of the central hole 4 and the end hole 5 ranges from 5 to 8 mm.
上述实施例中，橡胶套12与端盖3和筒外管7的固定还可以采取其它结构形式。In the above embodiments, the fixing of the rubber sleeve 12 to the end cap 3 and the outer tube 7 can also adopt other structural forms.
由以上描述，可以将本发明深钻孔测压封堵方法归纳为以下步骤：From the above description, the deep borehole pressure measurement plugging method of the present invention can be summarized into the following steps:
1)设置一分开放置有聚氨酯A料和B料的圆筒1，在圆筒1中穿设一瓦斯采集管，在瓦斯采集管的一伸出端连通一瓦斯进气头14，且在该端的圆筒1和瓦斯采集管上连接一橡胶套12；在圆筒1两端设置分别连通聚氨酯A料和B料的通气管10，其中一侧的通气管10位于橡胶套12内；1) Set a cylinder 1 separately placed with polyurethane material A and material B, and a gas collection pipe is installed in the cylinder 1, and a gas inlet head 14 is communicated at an extended end of the gas collection pipe, and a gas inlet head 14 is connected at the end of the A rubber sleeve 12 is connected to the cylinder 1 and the gas collection pipe; at both ends of the cylinder 1, there are ventilation pipes 10 connected to the polyurethane material A and material B respectively, and the ventilation pipe 10 on one side is located in the rubber sleeve 12;
2)迅速将瓦斯进气头14、橡胶套12及圆筒1插入瓦斯气体压力测定钻孔至预定深度；2) Quickly insert the gas inlet head 14, the rubber sleeve 12 and the cylinder 1 into the gas pressure measurement borehole to a predetermined depth;
3)将留在瓦斯气体压力测定钻孔外端的瓦斯采集管连通瓦斯压力测定仪表，且将留在瓦斯气体压力测定钻孔外端的通气管10连接压力气源；3) connect the gas collection pipe left at the outer end of the gas pressure measuring borehole to the gas pressure measuring instrument, and connect the vent pipe 10 left at the outer end of the gas pressure measuring borehole to the pressure gas source;
4)启动压力气源，压力气体将聚氨酯A料和B料快速挤压进入橡胶套12，混合后的聚氨酯A料和B料形成粘稠浆液在橡胶套12中膨胀反应后将瓦斯气体压力测定钻孔封堵住；4) Start the pressure gas source, the pressure gas will quickly squeeze the polyurethane material A and B into the rubber sleeve 12, the mixed polyurethane material A and B form a viscous slurry, expand and react in the rubber sleeve 12, and measure the gas pressure Drill hole plugged;
5)从瓦斯进气头14进入的瓦斯气体全部通过瓦斯采集管进入瓦斯压力测定仪表。5) All the gas entering from the gas inlet head 14 enters the gas pressure measuring instrument through the gas collecting pipe.
上述各实施例仅用于说明本发明，其中各部件的结构、连接方式和操作方法等都是可以有所变化的，凡是在本发明技术方案的基础上进行的等同变换和改进，均不应排除在本发明的保护范围之外。The above-mentioned embodiments are only used to illustrate the present invention, wherein the structure, connection mode and operation method of each component can be changed to some extent, and any equivalent transformation and improvement carried out on the basis of the technical solution of the present invention should not be used. excluded from the protection scope of the present invention.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410527523.1A CN104314509A (en) | 2014-10-09 | 2014-10-09 | Deep drill hole pressure measuring and blocking method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410527523.1A CN104314509A (en) | 2014-10-09 | 2014-10-09 | Deep drill hole pressure measuring and blocking method and device |
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| CN105781606A (en) * | 2016-03-02 | 2016-07-20 | 重庆大学 | Method for sealing large-dip-angle downward coal-seam-penetrating gas extraction-drainage drill hole |
| CN108732329A (en) * | 2018-05-14 | 2018-11-02 | 华北科技学院 | A kind of determination of coal seam gas pressure analog simulation experimental device and method |
| CN108825165A (en) * | 2018-06-11 | 2018-11-16 | 中国矿业大学 | A kind of convenient injection type hole packer of mash gas pumping drilling and method for sealing |
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| CN108825165A (en) * | 2018-06-11 | 2018-11-16 | 中国矿业大学 | A kind of convenient injection type hole packer of mash gas pumping drilling and method for sealing |
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