CN208653679U - A kind of hydrofracturing detecting earth stress unit protection device - Google Patents
A kind of hydrofracturing detecting earth stress unit protection device Download PDFInfo
- Publication number
- CN208653679U CN208653679U CN201821495580.6U CN201821495580U CN208653679U CN 208653679 U CN208653679 U CN 208653679U CN 201821495580 U CN201821495580 U CN 201821495580U CN 208653679 U CN208653679 U CN 208653679U
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- China
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- detecting earth
- packer
- earth stress
- hydrofracturing
- inferior pyramidal
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Abstract
The utility model provides a kind of hydrofracturing detecting earth stress unit protection device, belongs to geostress survey technical field.The protector includes protection sleeve and upper and lower taper device, protection sleeve with drilling rod is concentric is connected, upper end opening, lower end closed plays the role of collecting the sandstone fine crushing that detecting earth stress is fallen in the process；Upper and lower taper device is located at upper packer upper end and lower packet lower end, plays a protective role during device oscilaltion to the packer worn by bad borehole wall with hydrofracturing detecting earth stress device serial connection.In deep during hydrofracturing detecting earth stress, especially in km under the common protection of protection sleeve and upper and lower taper device, to reduce the abrasion of packer, improve testing efficiency, save the testing time, saved testing cost in deep drilling.The protector is easy for installation, easily operated, at low cost.
Description
Technical field
The utility model relates to detecting earth stress technical fields, particularly relate to -1000m~-2000m range deep hole water pressure blasting and cause
Split detecting earth stress unit protection device.
Background technique
Crustal stress is one of the important physical field being present in stratum body, is made of weight stress, tectonic stress etc., people
Class engineering activity can cause the concentration of local of stress field, and Instability of Rock Body is caused to destroy, crustal stress be cause rock mass deformation, unstability and
The fundamental driving force source of destruction, as the mankind to wanting the depth of resource deeper and deeper deeply, carrying out geostress survey is to ensure deeply
The important foundation of portion's well lane engineering has great importance to the exploration on deep ground.
Hydraulic fracturing is a kind of absolute ground-stress meassurement method, party's law theory is mature, it is easy to operate, fathom
Greatly, cost is relatively low, is a kind of common method in geostress survey.The drilling of one section of exposed bedrock is taken when measurement first, is used
Packer seals upper and lower ends；It is then injected into liquid, is pressurizeed until cell wall rupture, and record the change of pressure at any time
Change, and records or observe rupture orientation with stamp device.According to the fracture pressure of record, pump pressure and rupture orientation are closed, utilizes phase
The formula answered calculates the size and Orientation of original place principal stress.
Practice discovery, as what is fathomed is continuously increased, key device packer in detecting earth stress device is being bored
The appearance that rubble can be protruded above during advancing up and down in hole due to borehole wall, causes the packer based on rubber constituent to wear
Seriously, especially in the following deep hole of km, a set of packer at most only can guarantee the measurement of a measuring point, or even due to packer
Serious wear causes the failure of test.It is tiny or sharp broken due to the appearance of top rubble meanwhile during device above mentions
Stone may enter between packer and hole wall, on the one hand packer be caused to wear, when serious can also card master device, in huge drawing
Power effect even causes device to fall off.
Therefore, carrying out the following geostress measurement in deep borehole of km with hydraulic fracturing, especially when in stratum rock mass it is broken
When the more area of broken band, on the one hand it is noted that reinforcing the protection of packer in the decentralization of long range or above mention during, avoid
Broken hole wall wears packer, on the other hand also to prevent top rubble from blocking packer, safeguards containment device during upper mention
Multiple utilization.
Utility model content
The utility model is that existing hydrofracturing device is overcome to occur packer serious wear in deep hole detecting earth stress
The shortcomings that, a kind of hydrofracturing detecting earth stress unit protection device is provided.It, can not only by designing a kind of taper protective device
Play a protective role to packer, and test device top rubble can be collected, it is ensured that detecting earth stress device it is upper mention, under
Being used for multiple times during putting.
Protection sleeve, upper conical device and inferior pyramidal device is arranged in the protector on hydrofracturing detecting earth stress device, bores
Bar, change-over switch, upper conical device, upper packer, hydrofracturing device, lower packet and inferior pyramidal device are sequentially connected in series, outside drilling rod
Setting protection sleeve, protect sleeve and drilling rod it is concentric, upper conical device cone tip portion upward, the cone and change-over switch of upper conical device
Connect, downward, lower packet connects inferior pyramidal device cone tip portion with one end of the non-cone of inferior pyramidal device.
Wherein, protection sleeve outer diameter is consistent with upper packer and lower packet, and protection sleeve upper end is open, lower end closed.
Upper conical device upper end cone tip portion outer diameter is suitable with drilling rod outer diameter, upper conical device lower end outer diameter and upper packer and under
Packer outer diameter is suitable, upper conical device internal run-through, is connect with upper packer by concentric screw rod.
Inferior pyramidal device and upper conical device are symmetrical, and the non-cone tip portion in inferior pyramidal device top is connected with lower packet by concentric screw rod
It connects, the closing of inferior pyramidal device lower end cone tip portion.
The above-mentioned technical proposal of the utility model has the beneficial effect that:
The protector guarantees the complete of packer when can test crustal stress using hydraulic fracturing deeply below km
Good property, and then effectively ensure smoothly completing for the following deep hole detecting earth stress of km, the loss of packer is reduced, test is improved
Efficiency.
Detailed description of the invention
Fig. 1 is the hydrofracturing detecting earth stress unit protection device structural schematic diagram of the utility model.
Wherein: 1- drilling rod；2- protects sleeve；3- change-over switch；The upper conical device of 4-；5- upper packer；6- hydrofracturing device；
7- lower packet；8- inferior pyramidal device.
Specific embodiment
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail.
The utility model is that existing hydrofracturing device is overcome to occur packer serious wear in deep hole detecting earth stress
The problem of, a kind of hydrofracturing detecting earth stress unit protection device is provided.
The utility model is mentality of designing are as follows: in detecting earth stress device top and bottom, i.e., the top of upper packer and
The lower part of lower packet, installs a taper device respectively, which is made of steel pipe.On the taper device of test device upper end
End is connected with drilling rod (Steel Tube Special), and outer diameter is suitable with drilling rod, inner hollow, and taper device lower end diameter is suitable with packer, always
Length is suitable with packer；It is symmetrical on lower end toper device and upper taper device shape, inside closing.Upper and lower two taper devices are used
With protecting packer from the abrasion of bad hole wall.Meanwhile on last root drilling rod of test device top, one, housing and envelope
It every the comparable steel sleeve of device outer diameter, is fixed by the center of circle of drilling rod, lower part is shut, and top is open, to desilting and collection
The rubble that is scattered on top clips between packer and drilling to avoid tiny rubble and blocks test device.On test device top
It under the synergy of sleeve and two end toper devices, can effectively reduce the abrasion of packer, improve crust deep part hydrofracturing
The efficiency of method stress field test.
As shown in Figure 1, the protector is specifically the setting protection sleeve 2, epicone on hydrofracturing detecting earth stress device
Shape device 4 and inferior pyramidal device 8, drilling rod 1, change-over switch 3, upper conical device 4, upper packer 5, hydrofracturing device 6,7 and of lower packet
Inferior pyramidal device 8 is sequentially connected in series, and junction sealing is able to bear high hydraulic pressure.Setting protection sleeve 2, protects sleeve 2 outside drilling rod 1
Concentric with drilling rod 1, upward, the cone of upper conical device 4 connects upper conical 4 cone tip portion of device with change-over switch 3, and inferior pyramidal device 8 is bored
Downward, lower packet 7 connects nose part with one end of the non-cone of inferior pyramidal device 8.
In the specific application process, internal screw thread, drilling rod 1 are used in the sleeve of protection 2 lower part of sleeve and 1 link position of drilling rod
Using external screw thread, makes that 2 lower end position of sleeve is protected to be in closing after the two connection, detachably arranged after being recycled every time
Sand；After protection 2 top of sleeve is connect with drilling rod 1, guarantees the two with one heart, and protect 2 top end opening of sleeve, top can be collected
Broken sandstone.
Upper conical 4 upper end of device is connected with change-over switch 3, and lower part is connected with upper packer 5 by same screw rod, and inside is passed through
It is logical, pass through the screw rod containing control water route, and then realize water route connection up and down.
8 upper end of inferior pyramidal device is connected with lower packet 7 by screw rod, unlike upper conical device, 8 lower end of inferior pyramidal device
It closes, i.e. the inferior pyramidal device end that is water route.
By protecting the collective effect of sleeve 2 and upper conical device 4, inferior pyramidal device 8, traditional hydraulic fracturing crustal stress can be made
Test device is protected during the test, improves testing efficiency, saves testing cost.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with retouching.
Claims (4)
1. a kind of hydrofracturing detecting earth stress unit protection device, it is characterised in that: on hydrofracturing detecting earth stress device
Setting protection sleeve (2), upper conical device (4) and inferior pyramidal device (8), drilling rod (1), change-over switch (3), upper conical device (4), upper envelope
It is sequentially connected in series every device (5), hydrofracturing device (6), lower packet (7) and inferior pyramidal device (8), protective case is set outside drilling rod (1)
Cylinder (2), protection sleeve (2) and drilling rod (1) it is concentric, upper conical device (4) cone tip portion upward, the cone of upper conical device (4) with turn
Switch (3) is changed to connect, inferior pyramidal device (8) cone tip portion downward, one end phase of lower packet (7) and inferior pyramidal device (8) non-cone
It connects.
2. hydrofracturing detecting earth stress unit protection device according to claim 1, it is characterised in that: the protection sleeve
(2) unanimously, protection sleeve (2) upper end is open, lower end closed for outer diameter and upper packer (5) and lower packet (7).
3. hydrofracturing detecting earth stress unit protection device according to claim 1, it is characterised in that: the upper conical device
(4) cone tip portion outer diameter in upper end is suitable with drilling rod outer diameter, upper conical device (4) lower end outer diameter and upper packer (5) and lower packet
(7) outer diameter is suitable, and upper conical device (4) internal run-through is connect with upper packer (5) by concentric screw rod.
4. hydrofracturing detecting earth stress unit protection device according to claim 1, it is characterised in that: the inferior pyramidal device
(8) symmetrically with upper conical device (4), the non-cone tip portion in inferior pyramidal device (8) top is connect with lower packet (7) by concentric screw rod,
The closing of inferior pyramidal device (8) lower end cone tip portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821495580.6U CN208653679U (en) | 2018-09-13 | 2018-09-13 | A kind of hydrofracturing detecting earth stress unit protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821495580.6U CN208653679U (en) | 2018-09-13 | 2018-09-13 | A kind of hydrofracturing detecting earth stress unit protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208653679U true CN208653679U (en) | 2019-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821495580.6U Active CN208653679U (en) | 2018-09-13 | 2018-09-13 | A kind of hydrofracturing detecting earth stress unit protection device |
Country Status (1)
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| CN (1) | CN208653679U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029796A (en) * | 2018-09-13 | 2018-12-18 | 北京科技大学 | A kind of hydrofracturing detecting earth stress unit protection device |
| CN111677497A (en) * | 2020-06-28 | 2020-09-18 | 中国地质科学院地质力学研究所 | Hydrofracturing stress detection device and detecting system |
| CN115680537A (en) * | 2023-01-01 | 2023-02-03 | 中国有色金属工业昆明勘察设计研究院有限公司 | Drilling debris collecting device used in hydrofracturing method ground stress test |
-
2018
- 2018-09-13 CN CN201821495580.6U patent/CN208653679U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029796A (en) * | 2018-09-13 | 2018-12-18 | 北京科技大学 | A kind of hydrofracturing detecting earth stress unit protection device |
| CN109029796B (en) * | 2018-09-13 | 2023-11-03 | 北京科技大学 | Protector of hydraulic fracturing ground stress testing device |
| CN111677497A (en) * | 2020-06-28 | 2020-09-18 | 中国地质科学院地质力学研究所 | Hydrofracturing stress detection device and detecting system |
| CN115680537A (en) * | 2023-01-01 | 2023-02-03 | 中国有色金属工业昆明勘察设计研究院有限公司 | Drilling debris collecting device used in hydrofracturing method ground stress test |
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