CN102182446B - Mine monitoring method and equipment - Google Patents
Mine monitoring method and equipment Download PDFInfo
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- CN102182446B CN102182446B CN 201110122451 CN201110122451A CN102182446B CN 102182446 B CN102182446 B CN 102182446B CN 201110122451 CN201110122451 CN 201110122451 CN 201110122451 A CN201110122451 A CN 201110122451A CN 102182446 B CN102182446 B CN 102182446B
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Abstract
The invention provides a mine monitoring method and mine monitoring equipment. The mine monitoring equipment comprises: a pump for injecting a drilling fluid or a fracturing fluid containing fluorescent powder into the mine, and a spectrophotometer for detecting the fluorescent powder, wherein the pump is connected with the mine; and the spectrophotometer is connected with the mine. The mine monitoring method comprises at least the following steps of: injecting the drilling fluid or the fracturing fluid containing the fluorescent powder into the mine; draining off water of the mine to reduce the pressure; detecting the fluorescent powder of the water discharged from the mine to the ground; and judging the effectiveness of the drilling and fracturing processes according to a detection result. According to the mine monitoring equipment and the mine monitoring method, the effectiveness of the drilling and fracturing processes can be judged.
Description
Technical field
The present invention relates to the drilling well field, in particular to a kind of monitoring mining method and apparatus, relate in particular to monitoring method and the equipment of a kind of coal bed gas multi-branch horizontal drilling well and vertical well fracture.
Background technology
Along with China's coal bed gas enters the business development stage, in order to pursue high benefit, the developer begins to drill increasing horizontal branch well.The individual well total footage reaches more than 4000 meters, have in addition reach more than 8000 meters.Branch pattern is also varied, and two branches are arranged, and multiple-limb is also arranged, nearly 10 in the branch that a bite well has.Drilling engineering generally all is barefoot completion after finishing, and the example that adopts the plastic pipe completion is also arranged, at present also in test horizontal fragmentation pressure break, the manufacturing process that then begins water pumping gas production.The well production that has is very high, and the well production that has is very low, and the branch that has may be larger to the contribution of producing, and what have is possible smaller, and the pressure break part that has is more effective, and the fracturing section that has may not necessarily rise very effective.China's coal bed gas most wells adopts the vertical well fracture technology, and a large amount of fracturing fluids will enter more than 100 meter in pit shaft on every side, can also distal strata have larger contribution to production within a certain period of time? at present, all the problems referred to above all do not have definite answer.
Summary of the invention
The invention provides a kind of monitoring mining method and apparatus, be difficult to judge the problem of the validity of drilling well and fracturing process to solve prior art.
For this reason, the present invention proposes a kind of monitoring equipment for mine, and described monitoring equipment for mine comprises: will contain the drilling fluid of fluorescent material or the pump that fracturing fluid is squeezed into down-hole, described pump is connected with described mine; Detect the spectrophotometer of fluorescent material, be connected with described mine.
Further, described pump is slush pump or fracturing pump, and described mine is the horizontal well of multi-branched horizontal well or pressure break straight well or staged fracturing, is provided with in the described mine and holds holding a little of described fluorescent material.
Further, described spectrophotometer is arranged on outside the described mine.
The present invention also proposes a kind of monitoring mining method, described monitoring mining method comprises at least: drilling fluid or the fracturing fluid that will contain fluorescent material are squeezed into down-hole, to described mine drainage step-down, the water of discharging ground from described mine is carried out fluorescent material detect, judge the validity of drilling well and fracturing process according to testing result.
Further, described fluorescent material is fluorescent balls, carries out described fluorescent material by spectrophotometer and detects.
Further, described mine is multi-branched horizontal well, and described pump is slush pump, squeezes into the described fluorescent material of different wave length in each branch horizontal well in the described multi-branched horizontal well.
Further, described mine is the horizontal well of pressure break straight well or staged fracturing, and described pump is fracturing pump.
Further, described fluorescent material detects and comprises: detect described fluorescent material wavelength, concentration and fluorescent value.
Further, in the fracturing process of a fracturing section of described mine, at least twice squeezes into fluorescent material, squeezes into the fluorescent material of the first wavelength for the first time, squeezes into the fluorescent material of second wave length for the second time, and the first wavelength is different from second wave length.
Further, in the fracturing process of a fracturing section of described mine, squeeze into fluorescent material three times, squeeze into the fluorescent material of the first wavelength with pad of frac, squeeze into the fluorescent material of second wave length with main fracturing fluid, squeeze into the fluorescent material of three-wavelength with tail washings, the first wavelength, second wave length and three-wavelength are all not identical.
The present invention utilizes the characteristic of fluorescent material, and the fluorescent material of different wave length is squeezed into the down-hole, and these fluorescent material progressively decompose under the coal seam water dynamic condition, follow formation water and return out ground.In drilling well and fracturing process, these fluorescent material are recycled to the diverse location of pit shaft by drilling fluid and fracturing fluid, transitory phase gets off to static.Along with carrying out of later stage water pumping gas production process, these different wave lengths, the fluorescent material of diverse location will decompose gradually, along with formation water is discharged from ground.Detect the wavelength of the fluorescent material in the water by spectrophotometer, concentration and fluorescent value, make the data variation curve, we just can know within a certain period of time whether the well section of diverse location is also producing, thereby the validity of determined level drilling well and fracturing process is produced the suggestion that proposes directiveness to next step.Just can judge the validity of drilling well and fracturing process according to monitoring equipment for mine of the present invention and method.
Description of drawings
The operating principle schematic diagram of Fig. 1 for according to multi-branched horizontal well (overlooking) drilling well of the embodiment of the invention time;
Fig. 2 is the operating principle schematic diagram during according to the vertical well fracture of the embodiment of the invention;
Fig. 3 is the operating principle schematic diagram during according to the staged fracturing of horizontal well of the embodiment of the invention.
The drawing reference numeral explanation:
10, straight well 20, pump 30, spectrophotometer 40, branch horizontal well
41, hold a little 50, straight well 51, well head 60, coal seam 61, pressure break passage
70, the first paragraph 72 of horizontal well 71, fractured horizontal well, the second segment of fractured horizontal well
The N section 701 of N, fractured horizontal well, well head 80, pressure break passage A1, proximal points
B1, middle end points C1, remote point A2, proximal points B2, middle end points C2, remote point
The specific embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast description of drawings the specific embodiment of the present invention.
Such as Fig. 1, Fig. 2 and shown in Figure 3, comprise according to the monitoring equipment for mine of the embodiment of the invention: will contain the drilling fluid of fluorescent material or the pump 20 that fracturing fluid is squeezed into down-hole, described pump 20 is connected with described mine and for example is arranged on the well head place; Detect the spectrophotometer 30 of fluorescent material, be connected with described mine.Spectrophotometer 30 is arranged on outside the described mine, for example is arranged on the well head place, in order in time detect.When drilling well or pressure break, first fluorescent material is squeezed into the down-hole, during production, to described mine drainage step-down, the water of discharging ground from described mine is carried out fluorescent material with spectrophotometer 30 detect, easy to detect quick.
As shown in Figure 1, described mine is multi-branched horizontal well, and comprising straight well 10 and each Multilateral Wells 40 that is connected with straight well 10, the shape of multi-branched horizontal well is not limit.Described pump 20 is slush pump, is used for squeezing into drilling fluid.Squeeze into drilling fluid by pump 20, squeeze into the described fluorescent material of different-waveband in each branch horizontal well in the described multi-branched horizontal well.Described fluorescent material can be selected fluorescent RE powder, can also select radioactivity fluorescent material.Select fluorescent RE powder, cost is lower, selects radioactivity fluorescent material, and the light-emitting phosphor time is long, and the life-span is long, is conducive to detect.Fluorescent material can be fluorescent balls,, Stability Analysis of Structures arrives the position of estimating smoothly.Fluorescent balls is made by the fluorescent material compression, and uniformly dispersiveness is arranged in water slowly, and 10mm fluorescent balls requirement decomposition cycle in 50 degrees centigrade of clear water is more than 180 days.The fluorescent balls quality that each position is squeezed into is no more than 10kg.The maximum 10mm of fluorescent balls diameter, minimum 0.1mm, large ball is mainly used in horizontal drilling, can by the hydrophthalmia of drill bits at different levels, arrive the stratum.When being mainly used in pressure break, squeezes into bead the down-hole.Fluorescent balls can adopt different wave length, and for example, A ball, B ball are the fluorescent balls of different wave length.
As shown in Figure 1, in the drilling well of multi-branched horizontal well, when we get into a certain position, just by pump with the A ball along with drilling fluid is got to the there.The A ball is static at this moment gets off, and slowly begins dissolution/dispersion.Get into the another one position, the B ball is got to the there, get into a position and can squeeze into specific fluorescent balls.
After this process finishes, begin after about 40 days to produce.The process of producing is the process of drainage and step-down.Water in the stratum can carry the fluorescent material of these decomposition, returns out ground.Detect the wavelength of these fluorescent materials in the water samples by spectrophotometer 30, concentration and fluorescent value, and be analyzed, we just know them from where, intensity is how, thereby reflects the situation of its well section of living in.
In the useful life of fluorescent balls in the phase, the production scene is adopted row and is produced production fluid and carry out every day and analyze, and obtains the concentration of each fluorescent balls, wavelength, and the information such as fluorescent value, and compare processing.Use result to judge the validity of each section of multi-branched horizontal well.Arrived all fluorescent materials except the B ball such as us in ground detection, that just can conclude that B ball place well section stopped up, to producing not contribution.If it is very low to detect B ball fluorescent material relative concentration, illustrate that B ball place well section is obstructed, very little to producing contribution.We are familiar with drilling process and geological design conversely by these data, find the reason of low yield.Pressure break also is the same, and it is closed gradually to produce passage after the pressure break, and by this way, we know that those passages are closed easily, can instruct FRACTURING DESIGN and geological knowledge conversely.
As shown in Figure 1, for multi-branched horizontal well, be provided with in the described mine hold described fluorescent material hold a little 41, hold a little 41 and can be each wellbore bottom, like this, can judge that this section wellbore bottom is to the production status of branch point.In addition, also can arrange in other position of pit shaft as the case may be, as holding middle and upper part or the middle and lower part that a little is located at this section pit shaft.
Such as Fig. 1, Fig. 2 and shown in Figure 3, the present invention also proposes a kind of monitoring mining method, described monitoring mining method comprises at least: drilling fluid or the fracturing fluid that will contain fluorescent material are squeezed into down-hole, to described mine drainage step-down, the water of discharging ground from described mine is carried out fluorescent material detect.During drilling well, the drilling fluid that will contain fluorescent material is squeezed into down-hole, and then draining detects fluorescent material.Described fluorescent material detects and comprises: detect described fluorescent material wavelength, concentration and fluorescent value.Like this, can access comparatively comprehensive various data, what be conducive to judge is accurate.Carry out fluorescent material with spectrophotometer 30 and detect, data quick, that obtain easy to detect are comparatively comprehensive, save detection time.Monitoring method during about the multi-branched horizontal well drilling well, the front is described, and the course of work of the staged fracturing of vertical well fracture and horizontal well is described below.
During pressure break, described pump is fracturing pump, and described mine is the horizontal well of pressure break straight well or staged fracturing.The pressure break passage is closed gradually after the pressure break, squeezes into fluorescent material and detects this way by the down-hole, and we know that those pressure break passages are closed easily, can instruct FRACTURING DESIGN and geological knowledge conversely.
In the fracturing process of a fracturing section of described mine, at least twice squeezes into fluorescent material, for the first time, in remote point (apart from straight well or horizontal well at a distance), squeeze into the fluorescent material of the first wavelength, for the second time, at proximal points (apart from straight well or horizontal well more nearby), squeeze into the fluorescent material of second wave length, the first wavelength is different from second wave length.As shown in Figure 2, mine carries out vertical well fracture, and pump 20 is fracturing pump, and pump 20 and spectrophotometer 30 for example are arranged on well head 51 places of straight well 50.Straight well 50 is deep in the coal seam 60, by the pressure break passage 61 in the pressure break formation coal seam 60, in the process that forms pressure break passage 61, successively form remote point C1, middle end points B1, proximal points A1, remote point C2, middle end points B2 and proximal points A2, wherein the premises is all successively squeezed into the fluorescent balls of specific wavelength with fracturing fluid, the used fluorescent balls wavelength of each point is all not identical, to distinguish.
The above-mentioned process of squeezing into fluorescent material can for: squeeze into the fluorescent material of the first wavelength with pad of frac, squeeze into the fluorescent material of second wave length with main fracturing fluid, squeeze into the fluorescent material of three-wavelength with tail washings.In three different phases of pressure break, squeeze into respectively fluorescent material so that fluorescent material to enter the down-hole consistent with the process of pressure break so that fluorescent material enters into comparatively desirable position, obtain to detect preferably effect.Certainly, the number of times of squeezing into fluorescent material is not limited to twice or three times, can as required, repeatedly squeeze into fluorescent material.Then detect, the testing process when testing process and multi-branched horizontal well drilling well is basic identical, repeats no more.
Shown in Figure 3 is the operating principle of the staged fracturing of horizontal well, and the main difference point of the vertical well fracture among itself and Fig. 2 is: the mine among Fig. 3 is horizontal well 70.Be provided with pump 20 and spectrophotometer 30 at well head 701 places.This horizontal well 70 is divided into multistage, is respectively first paragraph 71, second segment 72 so that N section (N is natural number) and carries out staged fracturing.Each section all forms pressure break passage 80.In the fracturing process of a fracturing section, squeeze into fluorescent material three times, for the first time, squeeze into the fluorescent material of the first wavelength with pad of frac, for the second time, squeeze into the fluorescent material of second wave length with main fracturing fluid, for the third time, squeeze into the fluorescent material of three-wavelength with tail washings, make various specific fluorescent material enter into different positions, namely enter into remote point C1, end points B1, proximal points A1, remote point C2, end points B2 and proximal points A2, the first wavelength, second wave length and three-wavelength are all not identical.Then detect, the testing process when testing process and multi-branched horizontal well drilling well is basic identical.The number of times of squeezing into fluorescent material is not limited to three times, can as required, repeatedly squeeze into fluorescent material.
According to monitoring equipment for mine of the present invention and method, can judge the validity of drilling well and fracturing process.The present invention is not only applicable to coal bed gas well, and is applicable too to the well of the similar completion method of oil and gas industry.
The above only is the schematic specific embodiment of the present invention, is not to limit scope of the present invention.For each ingredient of the present invention can make up under the condition of not conflicting mutually, any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present invention and principle and modification all should belong to the scope of protection of the invention.
Claims (2)
1. monitoring mining method, it is characterized in that, described monitoring mining method comprises at least: the fracturing fluid that will contain fluorescent material is squeezed into down-hole, to described mine drainage step-down, the water of discharging ground from described mine is carried out fluorescent material detect, judge the validity of drilling well and fracturing process according to testing result;
Described mine is the horizontal well of pressure break straight well or staged fracturing, and pump is fracturing pump;
In the fracturing process of a fracturing section of described mine, at least twice squeezes into fluorescent material, squeezes into the fluorescent material of the first wavelength for the first time, squeezes into the fluorescent material of second wave length for the second time, and described the first wavelength is different from second wave length,
Described fluorescent material is fluorescent balls, carries out described fluorescent material by spectrophotometer and detects.
2. monitoring mining method as claimed in claim 1, it is characterized in that, in the fracturing process of a fracturing section of described mine, squeeze into fluorescent material three times, squeeze into the fluorescent material of the first wavelength with pad of frac, squeeze into the fluorescent material of second wave length with main fracturing fluid, squeeze into the fluorescent material of three-wavelength with tail washings, described the first wavelength, second wave length and three-wavelength are all not identical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110122451 CN102182446B (en) | 2011-05-12 | 2011-05-12 | Mine monitoring method and equipment |
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| CN 201110122451 CN102182446B (en) | 2011-05-12 | 2011-05-12 | Mine monitoring method and equipment |
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| CN102182446A CN102182446A (en) | 2011-09-14 |
| CN102182446B true CN102182446B (en) | 2013-05-29 |
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| CN111075442A (en) * | 2019-12-26 | 2020-04-28 | 山西晋城无烟煤矿业集团有限责任公司 | Method for verifying extension length of fracturing main crack of coal-bed gas well |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200965520Y (en) * | 2005-12-13 | 2007-10-24 | 上海神开科技工程有限公司 | Online fluorescence spectrometer for measuring the oil content in drilling fluid |
| WO2010125439A1 (en) * | 2009-04-28 | 2010-11-04 | Schlumberger Technology B.V. | Methods and apparatus to optically determine velocities of downhole fluids |
| CN201749092U (en) * | 2010-07-27 | 2011-02-16 | 中国石化集团华北石油局 | X-ray fluorescence element analysis device and logging instrument thereof |
| CN202073554U (en) * | 2011-05-12 | 2011-12-14 | 兴和鹏能源技术(北京)有限公司 | Monitoring equipment for mine |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200965520Y (en) * | 2005-12-13 | 2007-10-24 | 上海神开科技工程有限公司 | Online fluorescence spectrometer for measuring the oil content in drilling fluid |
| WO2010125439A1 (en) * | 2009-04-28 | 2010-11-04 | Schlumberger Technology B.V. | Methods and apparatus to optically determine velocities of downhole fluids |
| CA2759886A1 (en) * | 2009-04-28 | 2010-11-04 | Schlumberger Canada Limited | Methods and apparatus to optically determine velocities of downhole fluids |
| CN201749092U (en) * | 2010-07-27 | 2011-02-16 | 中国石化集团华北石油局 | X-ray fluorescence element analysis device and logging instrument thereof |
| CN202073554U (en) * | 2011-05-12 | 2011-12-14 | 兴和鹏能源技术(北京)有限公司 | Monitoring equipment for mine |
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Address after: 100082 Beijing City, Haidian District Xizhimen North Street B maples International Center, No. 32 room 1609 Applicant after: Peng Xing and Energy Technology (Beijing) Co., Ltd. Address before: 100082 Beijing City, Haidian District Xizhimen North Street B maples International Center, No. 32 room 1609 Applicant before: Peng Xing and Energy Technology (Beijing) Co., Ltd. |
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Denomination of invention: Mine monitoring method and equipment Effective date of registration: 20150911 Granted publication date: 20130529 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Peng Xing and Energy Technology (Beijing) Co., Ltd. Registration number: 2015990000768 |
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