SU1634803A1 - Method for determining boundaries of the zone of joints communicating with the worked space - Google Patents

Abstract

The invention relates to the mining industry. The goal is to establish the position of the lateral boundaries of the fracture zone and to ensure a rational location of the drainage wells. From the preparatory development, a revolving well is drilled into the worked-out area of the lava. Drilling is performed intervalwise. After drilling each interval, the flow rate of the air and the pressure difference in the well along its length are measured. For the time of measurements in the preparatory development, a quick-detachable jumper is installed between the wellhead and the exhausted space. The measured interval of the well is isolated by a sealer at the time. After drilling is completed, a graph of the velocity and pressure difference along the well length is measured. Parameters 3 or Ј

Description

The invention relates to the mining industry and can be used to define the boundaries of the zone communicating with the cracked space.

The purpose of the invention is to determine the position of the lateral boundaries of the zone communicating with the cracks developed by the area and to ensure a rational location of the wells for the degassing of the adjacent layers and the open spaces.

FIG. Figure 1 shows a vertical section of the rock mass and graphs of the speed of movement and the difference in air pressure in the well; in fig. 2 and 3 are an example of a specific embodiment of the method, plan and section, respectively.

The rising well I (Fig. 1) is drilled at intervals from niche 2 of preparatory excavation 3, located in the coal pillar 4 and communicating with the exhausted space 5. in the direction of the exhausted space, above which a zone of fractures 6 communicating with the developed space forms with the upper 7 and lateral 8 boundaries. Air velocity and pressure difference are measured at intervals of drilling after installation of a sealer in a well (tampon, gland or packer) at the end of a hollow drill bit (not shown), by which the test interval is isolated from the rest of the well. an anemometer mounted on a rubber soft thick-walled plate with an opening for the anemometer diffuser. Time counts are made on a stopwatch. The plate is pressed against the hollow core in the wellhead and the measurement is made. In the same way, a depressometer is installed to measure the difference in air pressure. During the test, 3 5 m are performed.

WITH CO 4

00

ABOUT

oo

IKB.i / kina hornes At the time of fishing and measuring in the mine between the mouth of the well and the space i i, i naio ui iaio, i.e. kovo (in the first i (sailing i and para yut) veins i NLATIUM jumper pressure pressure over the developed space and at the port

(. KEYS

According to the plan of intentions, graphs of which, no one axis, lay i i wells, according to other values of Kjpovin Cshzhen, m / s (Fig. 1) in “spirit” are plotted. , km of uibi of a well and of a difference, 1 il and R mm of a drive According to the calculations of V and ° CGM (LI of a well, on a soroi proi ”from the natural growth of pressure and pressure difference ii., i HI with coir tia “Bathing pairs mm i HIM mmi.gchish about started l | i ii in (b iitHir to p but) marked on I and i, wells LI and 1 give HI g 11 i ooT.iei reliably on e: 7) the boundaries of the young are in the form of a Prove, on the other hand, “point 11 of the first straight line, on the side of the IR of the side face is 1 8, and cher“ point II min) i.ip ii to-i1 nn-Koi hypastova IIHSI icpxuoto i ranii G

 1I (.npi n and h (ration but a place to burn them (anion scrubbers, ppoho L hrch itf lopm.ix (rnt exhaust k)) of the rebels (. Wells by I pa personal i them and determined OJI1 at what depths v, i gins oi of the sword south kaiG-o n piy from koroy, TSSHZh1CHI, ira-tnocrs 1a 1eno in t ha go | i, tonoinn etps1 Hi wells iipufiii ie i anivs i

iMl il 1М1Ж1Ч.И I 11 Ov 1 and I 1В К

rzh nyy MI p a (-i RS and 1 off racss chzh ozhs in i a (anionic

 p /-.N I 1 I U phi ib i | i.i

About iuii.ii1 p iac g to otraPa pva wi i shnnymi skpba on i flooded vyrg | G) o i kami above 1x the previously used hectare HII tans 1eni side uotTopoibi ch.1knch) and the upper limit of the young c) ( With the developed space of cracks and the ration of the location of the oil wells in front of the wells (Fig. 2) and the thread 2 of the Hiioiiiioio Bremsberp 3 valve, ia would be drilled by the ROCC, with a sweat of 1 45 l burn IOHTV i% in, I In between drills 1) . and to the cycle of ocherepyugo, test me, meroion)) wap. using i ivioi a (not yet), making Hungarian

sailing jumper 9 in the vent bremsberg 3 and measuring the speed with an anemometer and stopwatch, and depressiometer measuring the air pressure difference in the well. After measuring the sail, the jumper was removed and drilling continued for the next 5-meter interval, after which the measurements were repeated

In a vertical section along the axis of the well (Fig. 3), graphs of the results of measuring the speed of movement 12 and the pressure difference 13 of air in the well were made. The graphs indicated the depths of well 10 and 11, at which a significant increase occurred in the first case

speeds and pressure differences, and in the second - reducing them to zero. These points on the section gave the position of the lateral 8 and upper 7 boundary of the zone of cracks, communicating with the developed space. The graphic design allowed the upper boundary of the zone to be set at a distance of 60 m from the reservoir soil. and the lateral side of the dip is at an angle of 71 ° to the law. as a result of measurements, the positions of the lateral and upper boundaries of the zone of communicating cracks generated by the space and the rational location of the anion wells were established

0

0

five

Purchasing Formula

The method of determining the boundaries of the zone communicating with the cracks developed by the space, including interval drilling of the well from the well into the massif, hernia drilling, measuring the speed of movement and air pressure difference in the well, plotting the velocity and ratio of air pressure over the length of the well, fixing the depth of the well at which a significant movement speed and pressure occurred, which, in order to establish the position of the side boundaries of the zone, communicates with the developed space property of the retina and ensuring the rational location of wells for the degassing of contiguous formations and open spaces,

5, a revolving well is drilled in the direction of the developed space from the preparatory excavation, a quick-build jumper is installed in this excavation for a time of speed and air pressure in the wellbore between the wellhead and the excavated space, at this time isolating with a sealer

0

lA

FIG L

J

15

Lj-

Fig.Z

Claims (1)

Claim The method of determining the boundaries of the zone in communication with the developed space of cracks, including interval drilling of a well from a well into an array, sealing its mouth, measuring the speed and difference of air pressure in the well. plotting the speed of movement and the difference in air pressure along the length of the well, fixing the depth of the well at which there was a significant change in speed and pressure, characterized in that, in order to establish the position of the lateral boundaries of the zone of cracks in communication with the worked out space and to ensure a rational arrangement of wells for degassing close seams and worked-out spaces, drill a rising well in the direction of the worked-out space from the preparatory work, set in Second generation Prefabricated bridge for time measurements of air velocity and pressure in the wellbore between the wellhead and the goaf, wherein the measured drilling interval for this time isolate encapsulation. / A FIG. 2 ¹ 634803 {'-``Ktor m L'Kaz Kf.'ieMein ^ϋΗ ^ 1! _{! Ηι} gos 11 3035,. .., P ro and knowledge of the foam publishing house: