CN209163775U - Foaming type volume leaking stoppage device in well - Google Patents
Foaming type volume leaking stoppage device in well Download PDFInfo
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- CN209163775U CN209163775U CN201821707620.9U CN201821707620U CN209163775U CN 209163775 U CN209163775 U CN 209163775U CN 201821707620 U CN201821707620 U CN 201821707620U CN 209163775 U CN209163775 U CN 209163775U
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- 238000005187 foaming Methods 0.000 title claims abstract description 14
- 238000005553 drilling Methods 0.000 claims abstract description 26
- 229920001821 foam rubber Polymers 0.000 claims abstract description 24
- 238000003860 storage Methods 0.000 claims description 48
- 229920001971 elastomer Polymers 0.000 claims description 26
- 239000006260 foam Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 abstract description 16
- 238000005755 formation reaction Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000009918 complex formation Effects 0.000 abstract description 2
- 230000001502 supplementing effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 9
- 229920006328 Styrofoam Polymers 0.000 description 5
- 239000008261 styrofoam Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
本实用新型公开了一种井内发泡式体积堵漏装置，是由钻杆、发泡堵漏机构、扩孔器和钻头组成，钻杆、发泡堵漏机构、扩孔器和钻头依次螺纹连接在一起；本实用新型主要解决钻井工程中复杂地层的涌水涌气和漏失问题，针对现有堵漏装置操作复杂、成本较高，大都不能直接作用于漏失处，堵漏效果往往不理想，不适合深孔等问题，本实用新型操作简单，成本小，使用过程中只需补充发泡胶即可不断工作；适用于各个深度的地层，底部安装有导向钻头，增强了实用性；直接作用于漏失处，堵漏效果可靠；堵漏过程可通过地表泵压表的示数实时监测控制，增强了可操作性和实用性。
The utility model discloses an in-well foaming type volume leakage plugging device, which is composed of a drill pipe, a foaming leakage plugging mechanism, a hole reamer and a drill bit. connected together; the utility model mainly solves the problems of water inrush and gas leakage and leakage of complex formations in drilling engineering, and the existing plugging devices are complicated in operation and high in cost, and most of them cannot directly act on the leakage, and the plugging effect is often unsatisfactory. It is not suitable for problems such as deep holes, the utility model is simple in operation and low in cost, and it can work continuously only by supplementing foam rubber during use; it is suitable for formations of various depths, and the bottom is installed with a pilot bit, which enhances the practicability; direct action At the leakage point, the plugging effect is reliable; the plugging process can be monitored and controlled in real time through the indication of the surface pump pressure gauge, which enhances the operability and practicability.
Description
技术领域technical field
本实用新型涉及钻孔技术领域，特别涉及一种井内发泡式体积堵漏装置。The utility model relates to the technical field of drilling, in particular to an in-well foaming type volume plugging device.
背景技术Background technique
在钻探生产过程中经常会遇到松散破碎和溶洞、裂隙发育的复杂地层，它们通常会导致钻孔冲洗液的严重漏失，使钻井液无法保持正常循环，难以正常钻进；而当钻遇承压水地层或含油气地层时，地层中的水或气可能会进入钻孔内，导致涌水、涌气事故的发生，造成泥浆性能的改变，并产生安全隐患。因此，针对上述地层的有效堵漏方法一直是钻井行业亟待解决的问题之一。In the process of drilling and production, complex formations with loose and broken, karst caves and fissures are often encountered, which usually lead to serious leakage of drilling fluid, so that the drilling fluid cannot maintain normal circulation and it is difficult to drill normally; In water-pressurized formations or oil-gas-bearing formations, water or gas in the formation may enter the borehole, resulting in water inrush and gas inrush accidents, changes in mud performance, and potential safety hazards. Therefore, effective plugging methods for the above-mentioned formations have always been one of the urgent problems to be solved in the drilling industry.
目前，针对上述地层采用水泥护壁堵漏、改变钻井液的流变性能、加入堵漏剂、黏土球充填法和下入套管等方法，这些方法大都操作复杂、成本较高，大都不能直接作用于漏失处，堵漏效果往往不理想，尤其是当钻孔的深度较深时，这些问题显得更加突出。At present, for the above-mentioned formations, methods such as cement protection wall plugging, changing the rheological properties of drilling fluid, adding loss-stopping agent, clay ball filling method, and running casing are used. For leaks, the plugging effect is often unsatisfactory, especially when the depth of the borehole is deep, these problems are more prominent.
发明内容SUMMARY OF THE INVENTION
本实用新型的目的是要解决上述背景技术中，现有堵漏装置和方法操作复杂、成本较高，大都不能直接作用于漏失处，堵漏效果往往不理想，不适合深孔等问题，而提供一种井内发泡式体积堵漏装置。The purpose of this utility model is to solve the problems in the above-mentioned background technology that the existing plugging devices and methods are complicated in operation and high in cost, and most of them cannot directly act on the leakage, the effect of plugging is often unsatisfactory, and they are not suitable for deep holes and the like. Provided is an in-well foaming volume plugging device.
一种井内发泡式体积堵漏装置，是由钻杆、发泡堵漏机构、扩孔器和钻头组成，钻杆、发泡堵漏机构、扩孔器和钻头依次螺纹连接在一起；An in-well foaming type volume plugging device is composed of a drill pipe, a foaming plugging mechanism, a reamer and a drill bit, and the drill pipe, the foaming plugging mechanism, the reamer and the drill are screwed together in sequence;
所述钻杆上接头连接钻具，钻杆下接头与异径接头螺纹连接；The upper joint of the drill pipe is connected with the drilling tool, and the lower joint of the drill pipe is threadedly connected with the reducing joint;
所述发泡堵漏机构包括异径接头、单向溢流阀、橡胶活塞、储藏室、发泡胶、外管和单向溢流阀，异径接头上端与钻杆下接头螺纹连接，异径接头下端分别与储藏室和外管螺纹连接，发泡胶和橡胶活塞从下往上依次设置在储藏室的环形储藏腔中，橡胶活塞上端与异径接头下端接触，储藏室中心设有通道，中心通道上端安装有单向溢流阀，储藏室底部开孔中设有单向溢流阀；The foam plugging mechanism includes a reducing joint, a one-way overflow valve, a rubber piston, a storage room, a foam rubber, an outer pipe and a one-way overflow valve. The upper end of the reducing joint is threadedly connected with the lower joint of the drill pipe, and the The lower end of the diameter joint is threadedly connected with the storage chamber and the outer pipe respectively, the foam rubber and the rubber piston are sequentially arranged in the annular storage chamber of the storage chamber from bottom to top, the upper end of the rubber piston is in contact with the lower end of the reducing joint, and the center of the storage chamber is provided with a channel , a one-way overflow valve is installed on the upper end of the central channel, and a one-way overflow valve is installed in the opening at the bottom of the storage room;
所述扩孔器上端与外管的下端螺纹连接，扩孔器下端与钻头上端螺纹连接；The upper end of the reamer is threadedly connected with the lower end of the outer pipe, and the lower end of the reamer is threadedly connected with the upper end of the drill bit;
钻头上端与扩孔器下端螺纹连接。The upper end of the drill bit is threadedly connected with the lower end of the reamer.
本实用新型的工作原理和过程：The working principle and process of the present utility model:
一、堵漏开始前，停泵，将钻具提离孔底，在地表将发泡胶(一般为聚氨酯类等常见发泡胶)注入储藏室内密封，调节底部单向溢流阀开启压力稍大于漏失地层处的钻杆内液柱压力P，并将堵漏装置组装好，上端连接钻杆；1. Before the plugging starts, stop the pump, lift the drilling tool away from the bottom of the hole, inject foam rubber (usually common foam rubber such as polyurethane) into the storage chamber on the surface to seal, and adjust the opening pressure of the one-way relief valve at the bottom to slightly It is greater than the liquid column pressure P in the drill pipe at the lost formation, and the plugging device is assembled, and the upper end is connected to the drill pipe;
二、将堵漏装置缓慢下入孔底或目标深度，此时，橡胶活塞上端受到的压力为P。之后开泵，使钻井液从钻杆中心通道内注入，同时观察地表泵压表示数缓慢升高，此时，橡胶活塞缓慢下移，储藏室底部单向溢流阀被打开，同时发泡胶进入储藏室外侧与外管的环形储藏腔内，并通过外管上的孔洞进入漏失地层中，遇水不断膨胀固化，封堵地层裂隙；2. Slowly lower the leakage plugging device into the bottom of the hole or the target depth. At this time, the pressure on the upper end of the rubber piston is P. Then turn on the pump to inject drilling fluid from the central channel of the drill pipe, and observe that the surface pump pressure slowly rises. At this time, the rubber piston moves down slowly, the one-way overflow valve at the bottom of the storage room is opened, and the foam rubber Enter into the annular storage cavity on the outside of the storage chamber and the outer pipe, and enter the lost formation through the holes on the outer pipe, and continuously expand and solidify when encountering water, sealing the formation cracks;
三、当储藏室内的发泡胶被挤出完毕时，钻杆内部钻井液压力迅速上升，地表泵压表示数突然增大，说明堵漏完毕，此时，立刻关闭泥浆泵，等待一段时间使发泡胶稳定后即可提出钻具；3. When the styrofoam in the storage room is extruded, the drilling fluid pressure inside the drill pipe rises rapidly, and the surface pump pressure increases suddenly, indicating that the plugging is completed. At this time, immediately turn off the mud pump and wait for a period of time After the styrofoam is stabilized, the drilling tool can be lifted;
四、当在堵漏过程中遇到轻微卡钻或者岩屑卡堵时，可启动钻具利用钻头进行扫孔作业，保证堵漏装置的正常作业；4. When there is a slight sticking or cuttings stuck during the plugging process, the drilling tool can be started to use the drill bit to sweep the hole to ensure the normal operation of the plugging device;
五、完成一次作业后，只需拆开储藏室补充发泡胶重新组装后即可进行下次作业。5. After completing one operation, you only need to disassemble the storage room to add styrofoam and reassemble it for the next operation.
本实用新型的有益效果：The beneficial effects of the present utility model:
本实用新型操作简单，成本小，使用过程中只需补充发泡胶即可不断工作；适用于各个深度的地层，底部安装有扫孔钻头，增强了实用性；直接作用于漏失处，堵漏效果可靠；堵漏过程可通过地表泵压表的示数实时监测控制，增强了可操作性和实用性。The utility model has the advantages of simple operation and low cost, and can work continuously only by supplementing foam rubber during the use process; it is suitable for the formation of various depths, and the bottom is equipped with a sweeping drill bit, which enhances the practicability; The effect is reliable; the plugging process can be monitored and controlled in real time through the indication of the surface pump pressure gauge, which enhances the operability and practicability.
附图说明Description of drawings
图1是本实用新型实施例一的结构剖视图；1 is a structural cross-sectional view of Embodiment 1 of the present invention;
图2是本实用新型实施例二的结构剖视图。FIG. 2 is a structural cross-sectional view of the second embodiment of the present invention.
具体实施方式Detailed ways
请参阅图1和图2所示，一种井内发泡式体积堵漏装置，是由钻杆1、发泡堵漏机构2、扩孔器3和钻头4组成，钻杆1、发泡堵漏机构2、扩孔器3和钻头4依次螺纹连接在一起；Please refer to Figures 1 and 2. An in-well foaming volume plugging device is composed of a drill pipe 1, a foaming plugging mechanism 2, a reamer 3 and a drill bit 4. The drill pipe 1, foam plugging The leakage mechanism 2, the reamer 3 and the drill bit 4 are screwed together in sequence;
所述钻杆1上接头11连接钻具，钻杆1下接头12与异径接头 21螺纹连接；The upper joint 11 of the drill rod 1 is connected to the drilling tool, and the lower joint 12 of the drill rod 1 is threadedly connected with the reducing joint 21;
所述发泡堵漏机构2包括异径接头21、单向溢流阀22、橡胶活塞23、储藏室24、发泡胶25、外管26和单向溢流阀27，异径接头 21上端与钻杆1下接头12螺纹连接，异径接头21下端分别与储藏室24和外管26螺纹连接，发泡胶25和橡胶活塞23从下往上依次设置在储藏室24的环形储藏腔31中，橡胶活塞23上端与异径接头21 下端接触，储藏室24中心设有通道32，中心通道32上端安装有单向溢流阀22，储藏室24底部开孔中设有单向溢流阀27；The foam plugging mechanism 2 includes a reducing joint 21, a one-way overflow valve 22, a rubber piston 23, a storage chamber 24, a foam rubber 25, an outer pipe 26 and a one-way overflow valve 27, and the upper end of the reducing joint 21. It is threadedly connected with the lower joint 12 of the drill pipe 1, the lower end of the reducing joint 21 is threadedly connected with the storage chamber 24 and the outer pipe 26 respectively, and the foam rubber 25 and the rubber piston 23 are sequentially arranged in the annular storage chamber 31 of the storage chamber 24 from bottom to top The upper end of the rubber piston 23 is in contact with the lower end of the reducing joint 21, the center of the storage chamber 24 is provided with a channel 32, the upper end of the central channel 32 is provided with a one-way relief valve 22, and the opening at the bottom of the storage chamber 24 is provided with a one-way relief valve. 27;
所述发泡堵漏机构2包括异径接头21、单向溢流阀22、橡胶活塞23、储藏室24、发泡胶25、外管26、弹簧28和橡胶塞29，异径接头21上端与钻杆1下端螺纹连接，异径接头21下端分别与储藏室 24和外管26螺纹连接，弹簧28、发泡胶25和橡胶活塞23从下往上依次设置在储藏室24的环形储藏腔31中，橡胶活塞23上端与异径接头21下端接触，储藏室24中心设有通道32，中心通道32上端安装有单向溢流阀22，储藏室24底部开孔中装有橡胶塞29；The foam plugging mechanism 2 includes a reducing joint 21, a one-way overflow valve 22, a rubber piston 23, a storage chamber 24, a foam rubber 25, an outer tube 26, a spring 28 and a rubber plug 29. The upper end of the reducing joint 21 It is threadedly connected with the lower end of the drill pipe 1, the lower end of the reducing joint 21 is threadedly connected with the storage chamber 24 and the outer pipe 26 respectively, and the spring 28, the foam rubber 25 and the rubber piston 23 are sequentially arranged in the annular storage chamber of the storage chamber 24 from bottom to top. In 31, the upper end of the rubber piston 23 is in contact with the lower end of the reducing joint 21, the center of the storage chamber 24 is provided with a channel 32, the upper end of the central channel 32 is installed with a one-way overflow valve 22, and the opening at the bottom of the storage chamber 24 is equipped with a rubber plug 29;
所述扩孔器3上端与外管26的下端螺纹连接，扩孔器3下端与钻头4上端螺纹连接；The upper end of the reamer 3 is threadedly connected to the lower end of the outer pipe 26, and the lower end of the reamer 3 is threadedly connected to the upper end of the drill bit 4;
钻头4上端与扩孔器3下端螺纹连接。The upper end of the drill bit 4 is threadedly connected with the lower end of the reamer 3 .
实施案例一：Implementation case one:
本实用新型的工作原理和过程：The working principle and process of the present utility model:
请参阅图1所示：一、堵漏开始前，停泵，将钻具提离孔底，在地表将发泡胶25(一般为聚氨酯类等常见发泡胶)注入储藏室24内密封，调节底部单向溢流阀27开启压力稍大于漏失地层处的钻杆1 内液柱压力P0，并将堵漏装置组装好，上端连接钻杆1；Please refer to Figure 1: 1. Before the plugging starts, stop the pump, lift the drilling tool away from the bottom of the hole, and inject foam rubber 25 (generally common foam rubber such as polyurethane) into the storage room 24 on the surface to seal, Adjust the opening pressure of the bottom one-way relief valve 27 to be slightly greater than the liquid column pressure P 0 in the drill pipe 1 at the lost formation, assemble the leakage plugging device, and connect the drill pipe 1 to the upper end;
二、将堵漏装置缓慢下入孔底或目标深度，此时，橡胶活塞23 上端受到的压力为P0。之后开泵，使钻井液从钻杆1中心通道内注入，同时观察地表泵压表示数缓慢升高，此时，橡胶活塞23缓慢下移，储藏室24底部单向溢流阀27被打开，同时发泡胶25进入储藏室24外侧与外管26的环形储藏腔31内，并通过外管26上的孔洞30进入漏失地层中，遇水不断膨胀固化，封堵地层裂隙；2. Slowly lower the leakage plugging device into the bottom of the hole or the target depth. At this time, the pressure on the upper end of the rubber piston 23 is P 0 . Then turn on the pump to inject the drilling fluid from the central channel of the drill pipe 1, and observe that the surface pump pressure indicator slowly rises. At this time, the rubber piston 23 moves down slowly, and the one-way overflow valve 27 at the bottom of the storage chamber 24 is opened. At the same time, the styrofoam 25 enters the outer side of the storage chamber 24 and the annular storage cavity 31 of the outer pipe 26, and enters the lost formation through the holes 30 on the outer pipe 26, and continuously expands and solidifies when encountering water, sealing the formation cracks;
三、当储藏室24内的发泡胶25被挤出完毕时，钻杆1内部钻井液压力迅速上升，地表泵压表示数突然增大，说明堵漏完毕，此时，立刻关闭泥浆泵，等待一段时间使发泡胶25稳定后即可提出钻具；3. When the foam rubber 25 in the storage room 24 is squeezed out, the pressure of the drilling fluid inside the drill pipe 1 rises rapidly, and the surface pump pressure increases suddenly, indicating that the plugging is completed. After waiting for a period of time for the styrofoam 25 to stabilize, the drilling tool can be lifted;
四、当在堵漏过程中遇到轻微卡钻或者岩屑卡堵时，可启动钻具利用钻头4进行扫孔作业，保证堵漏装置的正常作业；4. When there is slight sticking or cuttings stuck in the process of plugging, the drilling tool can be started to use the drill bit 4 to scan the hole to ensure the normal operation of the plugging device;
五、完成一次作业后，只需拆开储藏室24补充发泡胶25重新组装后即可进行下次作业。5. After completing one operation, only need to disassemble the storage room 24 to replenish the foam rubber 25 and reassemble it, and then the next operation can be performed.
实施案例二：Implementation case two:
本实用新型的工作原理和过程：The working principle and process of the present utility model:
请参阅图2所示，一、堵漏开始前，停泵，将钻具提离孔底，在地表将发泡胶25(一般为聚氨酯类等常见发泡胶)注入储藏室24内密封，调节储藏室中弹簧28被预压缩一定长度，其所产生的预应力应大于漏失地层处的钻杆内液柱压力P0；Please refer to Fig. 2. 1. Before the plugging starts, stop the pump, lift the drilling tool away from the bottom of the hole, and inject foam rubber 25 (generally common foam rubber such as polyurethane) into the storage room 24 on the surface to seal, The spring 28 in the adjustment storage room is pre-compressed to a certain length, and the pre-stress generated by the spring 28 should be greater than the liquid column pressure P 0 in the drill pipe at the lost formation;
二、将堵漏装置缓慢下入孔底或目标深度，此时，橡胶活塞23 上端受到的压力为P0。之后开泵，使钻井液从钻杆1中心通道内注入，同时观察地表泵压表示数缓慢升高，此时，橡胶活塞23缓慢下移，储藏室24底部橡胶塞被挤出，同时发泡胶25进入储藏室24外侧与外管26的环形储藏腔31内，并通过外管26上的孔洞30进入漏失地层中，遇水不断膨胀固化，封堵地层裂隙；2. Slowly lower the leakage plugging device into the bottom of the hole or the target depth. At this time, the pressure on the upper end of the rubber piston 23 is P 0 . Then turn on the pump to inject the drilling fluid from the central channel of the drill pipe 1, and observe that the surface pump pressure slowly rises. At this time, the rubber piston 23 moves down slowly, and the rubber plug at the bottom of the storage chamber 24 is squeezed out and foams at the same time. The glue 25 enters the outer side of the storage chamber 24 and the annular storage cavity 31 of the outer pipe 26, and enters the lost formation through the holes 30 on the outer pipe 26, and continuously expands and solidifies when encountering water, sealing the formation cracks;
三、当弹簧28被压缩到一定程度时，发泡胶25基本排出完毕，弹簧28无法被压缩，钻杆1内部钻井液压力迅速上升，地表泵压表示数突然增大，说明堵漏完毕，此时，立刻关闭泥浆泵，等待一段时间使发泡胶25稳定后即可提出钻具；3. When the spring 28 is compressed to a certain extent, the foam rubber 25 is basically discharged, the spring 28 cannot be compressed, the drilling fluid pressure inside the drill pipe 1 rises rapidly, and the surface pump pressure increases suddenly, indicating that the plugging is completed. At this time, immediately turn off the mud pump, wait for a period of time to stabilize the foam rubber 25, and then take out the drilling tool;
四、当在堵漏过程中遇到轻微卡钻或者岩屑卡堵时，可启动钻具利用钻头4进行扫孔作业，保证堵漏装置的正常作业；4. When there is slight sticking or cuttings stuck in the process of plugging, the drilling tool can be started to use the drill bit 4 to scan the hole to ensure the normal operation of the plugging device;
五、完成一次作业后，只需拆开储藏室24补充发泡胶25重新组装后即可进行下次作业。5. After completing one operation, only need to disassemble the storage room 24 to replenish the foam rubber 25 and reassemble it, and then the next operation can be performed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821707620.9U CN209163775U (en) | 2018-10-22 | 2018-10-22 | Foaming type volume leaking stoppage device in well |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025897A (en) * | 2018-10-22 | 2018-12-18 | 吉林大学 | A foaming type volume plugging device in a well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025897A (en) * | 2018-10-22 | 2018-12-18 | 吉林大学 | A foaming type volume plugging device in a well |
| CN109025897B (en) * | 2018-10-22 | 2021-05-18 | 吉林大学 | An in-well foaming volume plugging device |
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