CN106014402B - Filling medium measuring instrument for borehole wall deformation detection - Google Patents
Filling medium measuring instrument for borehole wall deformation detection Download PDFInfo
- Publication number
- CN106014402B CN106014402B CN201610586210.2A CN201610586210A CN106014402B CN 106014402 B CN106014402 B CN 106014402B CN 201610586210 A CN201610586210 A CN 201610586210A CN 106014402 B CN106014402 B CN 106014402B
- Authority
- CN
- China
- Prior art keywords
- cavity
- independent sealed
- well wall
- pressure
- booster pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/008—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by injection test; by analysing pressure variations in an injection or production test, e.g. for estimating the skin factor
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics And Detection Of Objects (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a filling medium measuring instrument for well wall deformation detection, relates to the technical field of well wall deformation measurement of drilling, and solves the technical problems that the relative position of a well wall deformation part cannot be measured in the prior art, and a measuring device based on a strain gauge is poor in reliability, low in precision, large in installation difficulty and the like. The invention comprises at least two independent sealed cavities which jointly form a complete hollow cylinder, and the outer wall of the hollow cylinder is attached to the well wall; each independent sealed cavity is provided with a booster pump and a telescopic cylinder which are respectively communicated with the independent sealed cavity. The invention is used for well wall deformation measurement.
Description
Technical Field
The invention relates to the technical field of well wall deformation measurement, in particular to a filling medium measuring instrument for well wall deformation detection.
Background
in the conventional strain gauges, the deformation of an object is generally measured by a strain gauge (change in resistivity or the like), and a good effect can be obtained in the conventional case. However, for a special environment, the oil and gas downhole environment, measurement with conventional instruments will appear to be unwieldy. Its main disadvantages are as follows:
(1) The downhole environment of oil and gas wells is generally in a high-temperature and high-pressure environment, the performance of the strain gauge is seriously influenced by the temperature, and therefore, the reliability of the strain gauge and the related combination for measuring the same is questionable.
(2) the wall deformation (e.g., reduction) of a well is generally a surface rather than a point or line, and thus, the intended effect is difficult to achieve with strain gage measurements.
(3) The strain gauge is close to the surface of the object for measuring the deformation of the object, and the installation of the strain gauge becomes a practical problem for the oil-gas well with the length of kilometers.
for a complex environment and a well wall with complex deformation characteristics (especially a coal rock well wall), the accuracy of measuring the whole dynamic process of the well wall deformation by using a strain gauge is questionable.
Disclosure of Invention
aiming at the prior art, the invention aims to provide a filling medium measuring instrument for borehole wall deformation detection, which solves the technical problems that the relative position of a borehole wall deformation part cannot be measured in the prior art, and a measuring device based on a strain gauge has poor reliability, low precision, high installation difficulty and the like.
in order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a filling medium measuring instrument for well wall deformation detection comprises at least two independent sealed cavities which jointly form a complete hollow cylinder, wherein the outer wall of the hollow cylinder is attached to a well wall; each independent sealed cavity is provided with a booster pump and a high-pressure telescopic cylinder which are respectively communicated with the independent sealed cavity.
In the scheme, the device comprises at least three independent sealed cavities, and all the independent sealed cavities form a complete hollow cylinder together. The greater the number of independent sealed cavities, the greater the assistance in determining the relative position of the borehole wall in which the deformation occurs.
in the above scheme, the at least three independent sealed cavities are respectively connected with the isolation modules through at least three cavity support modules. A support cavity; the cavity is divided into 3 or more parts, so that the deformation condition of each part can be conveniently measured; and determining the deformation condition of the relevant direction.
In the above scheme, the independent sealing cavity comprises two cavity support sector discs which are parallel to each other and have the same inner diameter and outer diameter respectively; the arc-shaped cavity supporting device is characterized by further comprising two arc-shaped supporting curved surfaces, wherein the two arc-shaped supporting curved surfaces are matched with the inner diameter and the outer diameter of the cavity supporting sector disc respectively to form an arc-shaped cavity.
In the above scheme, the arc-shaped supporting curved surface matched with the outer diameter is made of a high-strength flexible iron sheet.
in the above scheme, each independent sealed cavity is further provided with a booster pump communicated with the independent sealed cavity, and the booster pump is provided with a barometer.
In the scheme, the high-pressure telescopic cylinder is provided with the air pressure meter.
Compared with the prior art, the invention has the beneficial effects that:
(1) the relation between the well wall deformation and the time can be determined, the minimum pressure for preventing the well wall deformation at different moments is determined, and a favorable reference basis is provided for determining a drilling fluid density window more reasonably in the follow-up process;
(2) the device can measure the maximum and minimum horizontal ground stress and the concrete deformation of the well wall in the overburden pressure direction and the relation between the maximum and minimum horizontal ground stress and the concrete deformation and the time of the well wall;
(3) The device has the advantages that the cavity can be selectively filled with various fluids, the material selection range is wide, the pressure value can be flexibly adjusted, and the device is applied to the measurement of well wall deformation under various well shaft pressure conditions, so that the practicability is high;
(4) the device has the advantages of simple structure, convenient operation, strong adaptability, high precision and reliable measuring result;
(5) The device can also support the drill rod when necessary, so that the drilling direction is prevented from being influenced due to serious disturbance;
if the device is arranged near the drill bit, when the well wall collapses and the drill bit is buried, the air outlet valve can be closed, the inflation valve is opened, and the cavity is inflated, so that the borehole is enlarged, and the drill bit can be conveniently taken out.
drawings
FIG. 1 is a schematic three-dimensional structure of the present invention;
Fig. 2 is a schematic diagram of an embodiment of the present invention.
Detailed Description
all of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The invention is further described below with reference to the accompanying drawings:
Example 1
fig. 1 is a schematic diagram of a filling medium measuring instrument for borehole wall deformation detection, and fig. 2 is a view 1/3. The working principle is as follows: is filled with a certain volume (V)0) Elasticity of gas (liquid)when the container is communicated with another rigid movable container filled with gas (liquid), the pressure in the two containers is the same under the condition of no stress. When the elastic container is deformed under the action of certain external force, so that gas (liquid) in the container is raised, the gas (liquid) can flow towards the rigid movable container until the pressures of the two containers are equal (namely, the principle of the communicating vessel). The volume deformation of the elastic container and the pressure of the container are calculated through the change (delta V) of the gas in the movable rigid container and the reading (P) of a barometer.
The working process is as follows: the equipment is placed at a proper position at the rear part of a drill bit (can be adjusted as required) in the drilling process, the equipment is placed in the well along with the drill bit, then a booster pump is started to fill gas into a cavity of the equipment (preferably gas is filled during coal bed gas exploitation), simultaneously an air outlet valve of an air outlet of the cavity is opened, and when the display value of an air outlet cylinder barometer reaches bottom hole pressure P0when the cavity is closed, the air inlet valve and the booster pump are closed, and the volume of the air outlet cylinder is V0. As the drilling advances and time (t) passes, when t = i, the outlet cylinder volume is VtiThe digital display value of the barometer is PtiTime means that the volume deformation of the well wall is delta V within 0-i timeti=Vti-V0。ΔVt（i+1）=Vti+1-Vi. By analogy, the volume deformation at the time t can be calculated, and meanwhile, the minimum pressure value for preventing the well wall from deforming at the time can be obtained.
The device is shown in figure 1 and comprises three air cavities 4, three cavity supporting and isolating modules 3, three high-strength flexible elastic iron sheets, six air inlet/outlet ports and two cavity supporting disks. Referring now to figure 2 for a schematic illustration,
The cavity support discs of face AFGH and face DEJL-1/3;
body ABCDEF, body HIKLJG-cavity support isolation module 3;
Curved AHLD-high strength flexible elastic iron sheet;
R, T-inlet and outlet holes;
Y is a booster pump 2 with a pressure gauge;
M is a high-pressure telescopic cylinder 1 with a barometer;
1/3 cavities are formed by the surfaces AHGF, HGJL, LJED, ADLH, EJGF and AFED;
The working principle is as follows: the air inlet hole R is connected with the booster pump Y and has the function that the booster pump Y injects constant air pressure into the cavity to reach a preset air pressure value P0Simultaneously opening the air outlet T to make the air pressure meter of the high-pressure telescopic cylinder M display a value P0At this time, the booster pump Y, i.e., the intake port R, is turned off. The air outlet T should be always in an open state. And the air pressure change condition in the cavity is solved through the change of the value of the air pressure gauge on the high-pressure telescopic cylinder M.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (3)
1. A filling medium measuring instrument for well wall deformation detection is characterized by comprising an elastic container, wherein the elastic container comprises at least three independent sealed cavities which jointly form a complete hollow cylinder, and the outer wall of the hollow cylinder is attached to a well wall;
Each independent sealed cavity is provided with a high-pressure telescopic cylinder and an air outlet which are communicated with the independent sealed cavity, and the high-pressure telescopic cylinder is provided with a barometer;
the at least three independent sealed cavities are respectively connected with each other through at least three cavity supporting and isolating modules;
Each independent sealed cavity is also provided with a booster pump and an air inlet communicated with the independent sealed cavity, and the booster pump is provided with a barometer;
the booster pump is connected with the air inlet hole, so that the constant air pressure charged into the cavity by the booster pump reaches a preset air pressure value, the high-pressure telescopic cylinder is connected with the air outlet hole, and the air outlet hole and the air inlet hole are two non-coincident holes;
calculating the volume deformation and the pressure of the elastic container according to the volume change of the gas in the high-pressure telescopic cylinder and the reading of a barometer; and (4) calculating the volume deformation at the time t to obtain the minimum pressure value for preventing the well wall from deforming at the time.
2. The filling medium measuring instrument for borehole wall deformation detection as claimed in claim 1, wherein the independent sealed cavity comprises two cavity supporting sector discs which are parallel to each other and have the same inner diameter and outer diameter respectively; the arc-shaped cavity supporting device is characterized by further comprising two arc-shaped supporting curved surfaces, wherein the two arc-shaped supporting curved surfaces are matched with the inner diameter and the outer diameter of the cavity supporting sector disc respectively to form an arc-shaped cavity.
3. the apparatus as claimed in claim 2, wherein the curved support surface is made of high-strength flexible iron sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610586210.2A CN106014402B (en) | 2016-07-25 | 2016-07-25 | Filling medium measuring instrument for borehole wall deformation detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610586210.2A CN106014402B (en) | 2016-07-25 | 2016-07-25 | Filling medium measuring instrument for borehole wall deformation detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106014402A CN106014402A (en) | 2016-10-12 |
| CN106014402B true CN106014402B (en) | 2019-12-17 |
Family
ID=57117455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610586210.2A Active CN106014402B (en) | 2016-07-25 | 2016-07-25 | Filling medium measuring instrument for borehole wall deformation detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106014402B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285666B (en) * | 2016-10-25 | 2019-03-15 | 中国科学院力学研究所 | A kind of shallow-layer soil layer mechanics parameter monitoring method of permafrost region gas hydrates drilling |
| CN108088635A (en) * | 2016-11-23 | 2018-05-29 | 北京机电工程研究所 | A kind of non-tight polymorphic structure inner pressure test device |
| CN112081575B (en) * | 2020-09-10 | 2022-09-13 | 西南石油大学 | Multi-field coupling coal bed gas well surrounding rock deformation visual simulation device and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200989191Y (en) * | 2006-12-01 | 2007-12-12 | 孙忠民 | Casing connection vessel |
| CN102183202A (en) * | 2011-03-31 | 2011-09-14 | 中国矿业大学 | Borehole wall deformation sensor and test method thereof |
| CN102242630A (en) * | 2011-01-30 | 2011-11-16 | 山东科技大学 | Pressure stress monitoring pressure cushion and monitoring device for flexible mines as well as monitoring method of monitoring device |
| CN202073560U (en) * | 2011-01-30 | 2011-12-14 | 山东科技大学 | Pressure stress monitoring pressure cushion and monitoring device for flexible mine |
| CN202215237U (en) * | 2011-02-18 | 2012-05-09 | 濮阳市百福瑞德石油科技有限公司 | Communicating vessel type well kick leakage qualitative monitor |
| CN202599332U (en) * | 2012-01-19 | 2012-12-12 | 神华集团有限责任公司 | Concrete borehole wall surface deformation measuring apparatus |
| CN105092108A (en) * | 2015-08-06 | 2015-11-25 | 东北石油大学 | Testing ring for measuring inner and outer radial contact stress of rubber sleeve |
| CN205195872U (en) * | 2015-12-01 | 2016-04-27 | 平顶山天安煤业股份有限公司 | Mining pit shaft monitored control system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204877458U (en) * | 2015-08-21 | 2015-12-16 | 山东省水利科学研究院 | Haplopore multilayer position groundwater monitoring system |
| CN105158428A (en) * | 2015-08-21 | 2015-12-16 | 山东省水利科学研究院 | Multi-layer underground water monitoring pipe |
| CN204903520U (en) * | 2015-08-21 | 2015-12-23 | 山东省水利科学研究院 | Groundwater multilayer position monitoring pipe |
-
2016
- 2016-07-25 CN CN201610586210.2A patent/CN106014402B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200989191Y (en) * | 2006-12-01 | 2007-12-12 | 孙忠民 | Casing connection vessel |
| CN102242630A (en) * | 2011-01-30 | 2011-11-16 | 山东科技大学 | Pressure stress monitoring pressure cushion and monitoring device for flexible mines as well as monitoring method of monitoring device |
| CN202073560U (en) * | 2011-01-30 | 2011-12-14 | 山东科技大学 | Pressure stress monitoring pressure cushion and monitoring device for flexible mine |
| CN202215237U (en) * | 2011-02-18 | 2012-05-09 | 濮阳市百福瑞德石油科技有限公司 | Communicating vessel type well kick leakage qualitative monitor |
| CN102183202A (en) * | 2011-03-31 | 2011-09-14 | 中国矿业大学 | Borehole wall deformation sensor and test method thereof |
| CN202599332U (en) * | 2012-01-19 | 2012-12-12 | 神华集团有限责任公司 | Concrete borehole wall surface deformation measuring apparatus |
| CN105092108A (en) * | 2015-08-06 | 2015-11-25 | 东北石油大学 | Testing ring for measuring inner and outer radial contact stress of rubber sleeve |
| CN205195872U (en) * | 2015-12-01 | 2016-04-27 | 平顶山天安煤业股份有限公司 | Mining pit shaft monitored control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106014402A (en) | 2016-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4149409A (en) | Borehole stress property measuring system | |
| US4271696A (en) | Method of determining change in subsurface structure due to application of fluid pressure to the earth | |
| CN106014402B (en) | Filling medium measuring instrument for borehole wall deformation detection | |
| CN101846604B (en) | Detection method of grouting reinforcement effect in tunnel | |
| CN109239310A (en) | A kind of seepage force size and its measuring device and method that stratum effective stress is influenced | |
| US11067492B2 (en) | Physical simulation and calibration device and method for formation pressure testing | |
| CN110514342A (en) | The quickly measuring device and method of measurement soft rock strata crustal stress | |
| CN105806712B (en) | Hole internal water pressure test device and test macro | |
| MX2013014709A (en) | Systems and methods for measuring parameters of a formation. | |
| CN111982781A (en) | Sample cylinder sealing structure for rock soil sample permeability detection | |
| CN106869909B (en) | Testing device and testing method for determining hydrogeological parameters of inclined filling fracture | |
| CN111707701A (en) | Phase state testing device and method for compressible fluid in nano channel | |
| CN1131416C (en) | Strain monitoring system | |
| CN110778308B (en) | Device and method for testing gas flow while drilling | |
| EP0346099B1 (en) | Low-water-pressure controlled hydrologic test method | |
| Pearson et al. | Improvements in the Lugeon or packer permeability test | |
| CN1301958A (en) | Testing method and testing device for expansion pressure of soild expansion material | |
| CN210714663U (en) | Device for testing gas flow while drilling | |
| CN207636225U (en) | Detecting earth stress device in a kind of tunnel | |
| CN104266950A (en) | Portable core gas logging permeability measuring device | |
| CN202039840U (en) | Working fluid level device for oil well annular gas injection test | |
| CN114858981B (en) | Drilling complex overflow simulation and acoustoelectric coupling overflow monitoring experiment system | |
| CN214503289U (en) | Water pressure test device | |
| CN216894376U (en) | Single-phase heat preservation storage tank mechanism for formation fluid sampling while drilling | |
| CN106932041A (en) | A kind of water pressure test in borehole multistage flow high precision measuring device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |