CN106837303B - Method for determining drilling depth in real time according to operation parameters of hydraulic drilling machine - Google Patents
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- 238000005553 drilling Methods 0.000 title claims abstract description 235
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- 239000011435 rock Substances 0.000 claims abstract description 22
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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
- E21B47/04—Measuring depth or liquid level
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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
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Abstract
The invention discloses a method for determining the drilling depth in real time according to the operation parameters of a hydraulic drilling machine, and belongs to the fields of water prevention and control of coal mines, rock burst prevention and control, gas extraction technology and the like. Measuring the rotation pressure of the drilling machine in real time through a pressure transmitter; measuring the feeding pressure of the drilling machine in real time through a pressure transmitter; and testing the drilling rate of the drill rod by using the stay wire displacement sensor. And then, determining characteristic values of rotation pressure, feeding pressure and drilling rate for each drilling machine, determining the working state (drilling, idling, drill rod feeding or drill rod withdrawing) of the drilling machine according to the relation between the parameters and the characteristic values in the operation process of the drilling machine, multiplying the drilling rate by the drilling time to obtain the drilling depth in the period of time when the drilling machine is in the drilling state, and finally accumulating the drilling depth of each effective drilling time period to obtain the real-time drilling depth.
Description
Technical Field
The invention relates to the technical field of coal mine water prevention and control, rock burst prevention and control and gas extraction, in particular to a method for determining the drilling depth in real time according to the operation parameters of a hydraulic drilling machine.
Background
At present, coal is still the main energy supply of China's economy, and the continuous and stable coal supply will be the foundation of the steady development of China's economic construction. Along with the exploitation of coal resources, the exploitation depth of the existing coal mine is increased year by year, the geological conditions are more and more complex, and water inrush, gas outburst, rock burst and other geological disasters occur, so that the safety production of the coal mine is seriously threatened. Currently, many measures are taken in coal mines to prevent and control the above geological disasters, wherein the arrangement of the drill holes is the most common measure, for example, in order to prevent water inrush, a plurality of drill holes with different depths are usually drilled in the front near the heading head of the roadway for detecting geological conditions; in the aspect of gas control, the gas pre-pumping of a drill hole becomes a mandatory measure; in the aspect of preventing rock burst, pressure relief of a drill hole proves to be an effective means. The design of various underground coal mine drill holes has strict design specifications, and only the drill holes constructed strictly according to the design requirements can effectively play a role. The drilling depth is a key parameter of various drilling designs and is also a main basis for checking and accepting drilling. At present, the main means for checking and accepting the drilling depth in the underground coal mine is a mode of counting the number of drill rods, the method has large workload, and the result can be influenced by human factors. In addition, if geological anomalies such as faults and collapse columns occur in the drilling process, constructors need to manually record the depth of the abnormal area, and if the drilling depth record is not accurate, the quality of geological data is directly influenced, and the safe production of a coal mine is not facilitated.
The existing Chinese patent numbers are: 201120412707.5, discloses a drilling depth and stroke comprehensive detection system of a full hydraulic drilling machine for coal mines, and concretely discloses the following technical scheme, which comprises a platform moving stroke detection device, a detection device and a control device, wherein the platform moving stroke detection device comprises a sensing device arranged on a platform of the full hydraulic drilling machine, and the sensing device is used for detecting the stroke of the reciprocating motion of an axial driving oil cylinder of a drill rod in real time; the pressure detection device comprises a pressure sensor, the pressure sensor is arranged at a liquid inlet and a liquid outlet of the bidirectional hydraulic drive motor and is used for detecting the pressure at the inlet and the outlet in real time; the host control unit realizes intelligent judgment of each process of the drilling machine through the real-time feedback values of the platform stroke S and the differential pressure P; wherein the content of the first and second substances,
a. when the absolute value of P is Pkf, S is not increased or decreased, the drilling machine is in an idle state;
b. when P is Pkf, △ S is 0, the platform is in a no-load forward state;
c. when P is Pkf, △ S is 0, the platform is in a no-load backward moving state;
d. when P > Pkf, △ S >0, a lever-in state;
e. when P > Pkf, △ S <0, rod-retreating state;
f. when P < -Pkf and S are not increased or decreased, the rod state is selected;
pkf is the idle pressure threshold, the maximum differential drive pressure required for the drill pipe rotary hydraulic drive motor to run forward and reverse without load.
The overall situation is shown in the following table:
TABLE 1
| Serial number | Status of state | Pressure of | Displacement of the platform | Drill bit position |
| 1 | Free running | |P|<＝Pkf | S has no increase or decrease | |
| 2 | Unloaded forward movement of the platform | |P|<＝Pkf | △S>0 | |
| 3 | Platform unloaded backward shift | |P|<＝Pkf | △S<0 | |
| 4 | Feed rod | P>Pkf | △S>0 | Lp＝Lp+△S |
| 5 | Back rod | P>Pkf | △S<0 | Lp＝Lp+△S |
| 6 | Get pole | P<-Pkf | S has no increase or decrease |
According to the invention, through detecting the stroke of the axial driving oil cylinder of the drill rod for reciprocating motion and detecting the pressure at the liquid inlet and outlet of the bidirectional hydraulic driving motor, the intelligent judgment of the normal drilling process identification, the empty drilling identification, the rod feeding identification, the rod retreating identification, the rod taking identification and the like of the drilling machine is realized, so that the drilling depth is calculated, and meanwhile, a real-time drilling depth parameter can be obtained by combining the drilling time used per meter in the drilling process, so that the multi-mode identification and the depth parameter acquisition are successfully realized.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a method for determining the drilling depth in real time according to the operation parameters of a hydraulic drilling machine, and solves the problems of time and labor waste and unreliable results in the prior art.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:
a method for determining the drilling depth in real time according to the operation parameters of a hydraulic drilling machine comprises the following steps:
step 1, serially connecting a pressure transmitter into an input oil way of a rotary motor of a hydraulic drilling machine, and measuring the rotary pressure of the drilling machine in real time. And connecting the second pressure transmitter in series into an input oil path of a feeding oil cylinder of the hydraulic drilling machine, and measuring the feeding pressure of the drilling machine in real time. And testing the drilling rate of the drill rod by using the stay wire displacement sensor.
And 2, determining the rotation pressure characteristic value and the feeding pressure characteristic value of each drilling machine in different working states, wherein the working states of the drilling machines comprise a drilling state, an idle state, a drill rod feeding state or a drill rod withdrawing state.
And 3, in the operation process of the drilling machine, determining the working state of the drilling machine according to the relation among the rotation pressure, the feeding pressure, the drilling rate, the rotation pressure characteristic value, the feeding pressure characteristic value and the drilling rate characteristic value which are measured in real time, multiplying the drilling rate by the drilling time in the drilling state when the drilling machine is in the drilling state to obtain the drilling depth in the period of time, and finally accumulating the drilling depth in each drilling state to obtain the real-time drilling depth.
Preferably: the characteristic value of the rotation pressure in the step 2 comprises that the maximum value of the rotation pressure under the normal drilling condition is PRotary 1And minimum value of PScrew 2。
The characteristic value of the feeding pressure comprises that the maximum value of the feeding pressure under the normal drilling condition is PStep 1And minimum value of PStep 2。
Preferably: and 3, determining the working state of the drilling machine according to the relation among the rotation pressure, the feeding pressure, the drilling rate, the rotation pressure characteristic value, the feeding pressure characteristic value and the drilling rate characteristic value measured in real time:
when V isInto>0，PScrew 2≤PRotary wrench≤PRotary 1，PStep 2≤PInto≤PStep 1The drilling machine is in a drilling state.
When V isInto>0，PScrew 2≤PRotary wrench≤PRotary 1，0≤PInto≤PStep 2When the drilling machine is in a drill rod feeding state under the condition of hole collapse, if the drilling machine judges that no hole collapse exists through rock debris, the drilling machine carries out drilling on the P holeScrew 2Make a correction to increase PScrew 2。
When V isInto>0，0≤PRotary wrench≤PScrew 2，0≤PInto≤PStep 2When the drilling machine is in the state of feeding the drill rod under the condition of not collapsing the hole, if the collapse hole is judged to exist through the rock debris, the drilling machine is opposite to the drilling machine PScrew 2Making a correction to reduce PScrew 2。
When V isInto＝0，PScrew 2≤PRotary wrench≤PRotary 1When the drilling machine is in an idle running state under the condition of hole collapse, if the drilling machine is judged to have no hole collapse through rock debris, P is measuredScrew 2Make a correction to increase PScrew 2。
When V isInto＝0，0≤PRotary wrench≤PScrew 2The drilling machine is in an idle running state under the condition of not collapsing the hole, and if the collapse hole is judged to exist through rock debris, the drilling machine is in a P-hole collapse stateScrew 2Making a correction to reduce PScrew 2。
VInto<0, removing the drill rod.
Wherein, VIntoIndicating the rate of drilling, PRotary wrenchIndicating the rotation pressure, PIntoIndicating the feed pressure.
Preferably: and in the step 2, the rotation pressure characteristic value and the feeding pressure characteristic value are determined by monitoring the drilling process of 1-2 drill holes.
The working principle of the invention is as follows: the operation state of the hydraulic drilling machine under the coal mine can be determined by monitoring the operation parameters of the hydraulic drilling machine, when the drilling machine is in the drilling state, the drilling rate is multiplied by the drilling time to obtain the drilling depth in the period of time, and then the drilling depth of each effective drilling time period is accumulated to obtain the real-time drilling depth.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the analysis data is obtained by automatically acquiring the pressure and displacement of the oil circuit when the drilling machine operates in real time, and the normal work of the drilling machine is not influenced.
(2) The operation state of the drilling machine is judged by combining multiple parameters, and the result is more reliable. The method is particularly suitable for the situation of hole collapse caused by large stress, soft rock mass or large gas pressure and the like.
(3) The parameter characteristic values can be dynamically corrected to adapt to complex geological conditions.
(4) The implementation process of the invention can be automatically completed by a program, the drilling depth result is more reliable, and the influence of human factors is avoided.
(5) The scheme of the invention has clear thought, simple and convenient analysis and operation and low requirement on technical personnel.
The whole implementation process of the invention can be completed by program control, manual intervention is not needed, the problems of time and labor waste and unreliable results in the prior art are solved, meanwhile, the drilling depth is stored after drilling is finished, additional checking and accepting of the drilling depth is not needed, the application is simple and convenient, and the invention has wide popularization and application prospect.
Drawings
FIG. 1 is a flow chart of the present invention for determining the operational state of a drilling rig.
Fig. 2 is a method of determining the rotation pressure, feed pressure and drilling rate characteristic values in accordance with the present invention.
Fig. 3 is an example of determining the operating condition of a drilling machine without hole collapse in the present invention.
Fig. 4 is an example of determining the operating state of a drilling machine when the hole collapses in the present invention.
FIG. 5 is a diagram of the method of the present invention for determining borehole depth in real time using rig operating parameters.
Detailed Description
The present invention is further illustrated by the following description in conjunction with the accompanying drawings and the specific embodiments, it is to be understood that these examples are given solely for the purpose of illustration and are not intended as a definition of the limits of the invention, since various equivalent modifications will occur to those skilled in the art upon reading the present invention and fall within the limits of the appended claims.
A method for determining a drilling depth in real time based on an operational parameter of a hydrodrill, as shown in fig. 1, comprising the steps of:
step 1, serially connecting a pressure transmitter into an input oil way of a rotary motor of a hydraulic drilling machine, and measuring the rotary pressure of the drilling machine in real time. And connecting the second pressure transmitter in series into an input oil path of a feeding oil cylinder of the hydraulic drilling machine, and measuring the feeding pressure of the drilling machine in real time. And testing the drilling rate of the drill rod by using the stay wire displacement sensor.
And 2, determining a rotation pressure characteristic value, a feeding pressure characteristic value and a drilling rate characteristic value of each drilling machine in different working states.
Rotation pressure (P)Rotary wrench) The characteristic value refers to the input oil pressure of the rotary motor under different working states of the drilling machine, and can be determined through field tests. The characteristic value of the rotation pressure includes a maximum value of the rotation pressure P under a normal drilling conditionRotary 1And minimum value of PScrew 2Then P isRotary wrenchThe value range of (A) is not less than 0 and not more than PRotary wrench≤PRotary 1。
Feed pressure (P)Into) The characteristic value refers to the input oil pressure of the feeding oil cylinder under different working states of the drilling machine, and can be determined through field tests. The characteristic value of the feeding pressure comprises that the maximum value of the feeding pressure under the normal drilling condition is PStep 1And minimum value of PStep 2Then P isIntoThe value range of (A) is not less than 0 and not more than PInto≤PStep 1。
When the geological conditions or the model of the drilling machine are changed, the rotating pressure characteristic value and the feeding pressure characteristic value are determined by monitoring the drilling process of 1-2 drilled holes.
Said rate of penetration (V)Into) The characteristic value of (A) refers to the drilling rate of the drill bit under different working states of the drilling machine. In the drilling state, VInto>0; in the idle state, V Into0; in the state of feeding the drill rod, VInto>0; in the state of removing the drill rod, VInto<0。
The working state of the drilling machine refers to a certain state of the drilling machine in the drilling process, including a drilling state, an idle state, a drill rod feeding state or a drill rod withdrawing state, and can be determined by using a rotating pressure, a feeding pressure and a drilling rate value, and the specific flow is shown in fig. 1.
And 3, in the operation process of the drilling machine, determining the working state of the drilling machine according to the relation among the rotation pressure, the feeding pressure, the drilling rate, the rotation pressure characteristic value, the feeding pressure characteristic value, the drilling rate characteristic value and the drilling rate characteristic value which are measured in real time, multiplying the drilling rate by the drilling time in the drilling state when the drilling machine is in the drilling state to obtain the drilling depth in the period of time, and finally accumulating the drilling depth in each drilling state to obtain the real-time drilling depth.
The method for determining the working state of the drilling machine according to the relation among the rotation pressure, the feeding pressure, the drilling rate, the rotation pressure characteristic value, the feeding pressure characteristic value and the drilling rate characteristic value measured in real time comprises the following steps:
when V isInto>0，PScrew 2≤PRotary wrench≤PRotary 1，PStep 2≤PInto≤PStep 1The drilling machine is in a drilling state.
When V isInto>0，PScrew 2≤PRotary wrench≤PRotary 1，0≤PInto≤PStep 2When the drilling machine is in a drill rod feeding state under the condition of hole collapse, if the drilling machine judges that no hole collapse exists through rock debris, the drilling machine carries out drilling on the P holeScrew 2Make a correction to increase PScrew 2。
When V isInto>0，0≤PRotary wrench≤PScrew 2，0≤PInto≤PStep 2When the drilling machine is in the state of feeding the drill rod under the condition of not collapsing the hole, if the collapse hole is judged to exist through the rock debris, the drilling machine is opposite to the drilling machine PScrew 2Making a correction to reduce PScrew 2。
When V isInto＝0，PScrew 2≤PRotary wrench≤PRotary 1When the drilling machine is in an idle running state under the condition of hole collapse, if the drilling machine is judged to have no hole collapse through rock debris, P is measuredScrew 2Make a correction to increase PScrew 2。
When V isInto＝0，0≤PRotary wrench≤PScrew 2The drilling machine is in an idle running state under the condition of not collapsing the hole, and if the collapse hole is judged to exist through rock debris, the drilling machine is in a P-hole collapse stateScrew 2Making a correction to reduce PScrew 2。
VInto<0, removing the drill rod.
Wherein, VIntoIndicating the rate of drilling, PRotary wrenchIndicating the rotation pressure, PIntoIndicating the feed pressure.
The collapsed hole judging method comprises the following steps: in an idle state or a drill rod feeding state, whether rock debris gushes out from the drill hole or not can be judged, and if no rock debris gushes out, hole collapse can be judged to be avoided; otherwise, the existence of hole collapse can be judged.
Rotational pressure (P) in view of the complexity and variability of the geological conditions in the coal mineRotary wrench) May be varied, the invention being based on the parameters of the feed (feed) and idle conditions for the rotation pressure (P)Rotary wrench) The accuracy of the analysis result is ensured by dynamic correction of the characteristic value.
Examples of the invention
Connecting the pressure transmitter in series to an input oil circuit of a rotary motor of the hydraulic drilling machine, and measuring the rotary pressure of the drilling machine in real time; the pressure transmitter is connected in series to an input oil path of a feeding oil cylinder of the hydraulic drilling machine, and the feeding pressure of the drilling machine is measured in real time; and testing the drilling rate of the drill rod by using the stay wire displacement sensor. By monitoring the drilling process of 1-2 boreholes, characteristic values for the rotation pressure, feed pressure and rate of penetration are determined using fig. 2.
And judging the running state of the drilling machine by utilizing the relation among the rotating pressure, the feeding speed and the characteristic values of the rotating pressure, the feeding pressure and the feeding speed. In particular, when there is a hole collapse, the rotation pressure varies, and at this time, the rotation pressures at the time of feeding the drill rod and drilling are relatively close to each other, and it is necessary to distinguish between the two states in accordance with the magnitude of the feeding pressure. Fig. 3 and 4 are examples of determining the operation state of the drilling machine under the conditions of hole collapse and hole collapse, wherein fig. 3 is the state of the drilling machine under the condition of hole collapse and fig. 4 is the state of the drilling machine under the condition of hole collapse.
When the drilling machine is in a drilling state, the drilling rate is multiplied by the drilling time to obtain the drilling depth in the period of time, and finally the drilling depth of each effective drilling time period is accumulated to obtain the real-time drilling depth, and the result is shown in fig. 5.
Aiming at the problem that the drilling depth can not be determined in real time in various geological drilling constructions under the coal mine, the invention provides the method for utilizing the operation parameters of the drilling machine, which comprises the following steps: the rotating pressure, the feeding pressure, the rotating speed and the like, and the method for determining the depth of the drilled hole through real-time analysis. The method can be automatically implemented by the drilling machine operation parameter recording equipment, can display the current drilling state and the drilling depth of the drilling machine in real time, and provides reference for the acceptance of the drilling quality and the recording of the geological abnormal conditions. The invention solves the problems of large workload of checking and accepting the underground drilling depth of the coal mine, interference of human factors and the like. The invention can accurately judge the operation state of the drilling machine by fully utilizing all the operation parameters of the drilling machine, and is particularly suitable for the situation of hole collapse caused by larger stress, softer rock mass, large gas pressure and the like.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (3)
1. A method for determining the drilling depth in real time according to the operation parameters of a hydraulic drilling machine is characterized by comprising the following steps:
step 1, serially connecting a pressure transmitter into an input oil way of a rotary motor of a hydraulic drilling machine, and measuring the rotary pressure of the drilling machine in real time; connecting the second pressure transmitter in series to an input oil path of a feeding oil cylinder of the hydraulic drilling machine, and measuring the feeding pressure of the drilling machine in real time; testing the drilling rate of the drill rod by using a stay wire displacement sensor;
step 2, determining a rotation pressure characteristic value, a feeding pressure characteristic value and a drilling rate characteristic value of each drilling machine in different working states, wherein the working states of the drilling machines comprise a drilling state, an idle state, a drill rod feeding state or a drill rod withdrawing state; the characteristic value of the rotation pressure comprises that the maximum value of the rotation pressure under the normal drilling condition is PRotary 1And minimum value of PScrew 2(ii) a The characteristic value of the feeding pressure comprises that the maximum value of the feeding pressure under the normal drilling condition is PStep 1And minimum value of PStep 2；
Step 3, in the operation process of the drilling machine, determining the working state of the drilling machine according to the relation among the rotation pressure, the feeding pressure, the drilling rate, the rotation pressure characteristic value, the feeding pressure characteristic value and the drilling rate characteristic value which are measured in real time, multiplying the drilling rate by the drilling time in the drilling state when the drilling machine is in the drilling state to obtain the drilling depth in the period of time, and finally accumulating the drilling depth in each drilling state to obtain the real-time drilling depth;
the method for determining the working state of the drilling machine according to the relation between the rotation pressure, the feeding pressure, the drilling rate and the rotation pressure characteristic value, the feeding pressure characteristic value and the drilling rate characteristic value which are measured in real time comprises the following steps:
when V isInto>0，PScrew 2≤PRotary wrench≤PRotary 1，PStep 2≤PInto≤PStep 1The drilling machine is in a drilling state;
when V isInto>0，PScrew 2≤PRotary wrench≤PRotary 1，0≤PInto≤PStep 2When the drilling machine is in a drill rod feeding state under the condition of hole collapse, if the drilling machine judges that no hole collapse exists through rock debris, the drilling machine carries out drilling on the P holeScrew 2Make a correction to increase PScrew 2；
When V isInto>0，0≤PRotary wrench≤PScrew 2，0≤PInto≤PStep 2When the drilling machine is in the state of feeding the drill rod under the condition of not collapsing the hole, if the collapse hole is judged to exist through the rock debris, the drilling machine is opposite to the drilling machine PScrew 2Making a correction to reduce PScrew 2；
When V isInto＝0，PScrew 2≤PRotary wrench≤PRotary 1When the drilling machine is in an idle running state under the condition of hole collapse, if the drilling machine is judged to have no hole collapse through rock debris, P is measuredScrew 2Make a correction to increase PScrew 2；
When V isInto＝0，0≤PRotary wrench≤PScrew 2The drilling machine is in an idle running state under the condition of not collapsing the hole, and if the collapse hole is judged to exist through rock debris, the drilling machine is in a P-hole collapse stateScrew 2Making a correction to reduce PScrew 2；
VInto<0, removing the drill rod;
wherein, VIntoIndicating the rate of drilling, PRotary wrenchThe pressure of the rotation is indicated and,PintoIndicating the feed pressure.
2. The method of determining the depth of a borehole in real time from the operational parameters of a hydrodrill according to claim 1, wherein: and in the step 2, the rotation pressure characteristic value and the feeding pressure characteristic value are determined by monitoring the drilling process of 1-2 drill holes.
3. The method of determining the depth of a borehole in real time from the operational parameters of a hydrodrill according to claim 1, wherein: the collapsed hole judging method comprises the following steps: in an idle state or a drill rod feeding state, whether rock debris gushes out from the drill hole or not can be judged, and if no rock debris gushes out, hole collapse can be judged to be avoided; otherwise, the existence of hole collapse can be judged.
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| CN109322658B (en) * | 2018-12-20 | 2024-06-11 | 河北欧登塞科技有限公司 | Drilling depth measuring equipment and method |
| CN110107274B (en) * | 2019-04-18 | 2023-06-13 | 中铁工程装备集团有限公司 | Real-time online monitoring system and monitoring method for TBM (Tunnel boring machine) jumbolter based on hydraulic system |
| CN111852439B (en) * | 2020-08-05 | 2023-04-07 | 杨昭俊 | Comprehensive monitoring system for drilling depth of underground drill rig |
| CN113625620A (en) * | 2021-07-23 | 2021-11-09 | 三一重机有限公司 | Operation control method and system of rotary drilling rig |
| CN115469536A (en) * | 2022-09-20 | 2022-12-13 | 中煤科工集团重庆研究院有限公司 | Jamming risk assessment and drilling parameter adjustment control method |
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