Method for monitoring underground placement of liquid industrial waste in deep water-bearing horizons

FIELD: oil and gas extractive industry.

SUBSTANCE: method includes performing a test pumping of liquid waste into absorbing well before operational pumping, while changing flow step-by-step. From equation of absorption base hydrodynamic parameters are determined for calculation of predicted coefficients of operation characteristics of absorbing well and reserve well. During operational pumping of liquid waste together with thermometry along absorbing well shaft, registration of actual pressures and flow on pump devices, actual pressures on mouth in tubing pipes of absorbing well, actual pressures on face are additionally registered in absorbing well as well as pressures on mouth in behind-pipe space, actual loss at mouth in behind-pipe space, actual loss of waste on mouth, actual positions of face well, upper and lower limits of absorption range from well mouth. In reserve well actual pressures on face are registered, as well as actual positions of liquid level from reserve well mouth, upper and lower limits of absorption range. Prediction coefficients are compared for operation characteristics of absorbing well and reserve well to actual coefficients. 9 conditions of hydrodynamic bed conditions at reserve well and absorbing well are considered during pumping of waste. Specific actions of operator on each condition are described.

EFFECT: higher reliability and trustworthiness.

1 ex

 

The invention relates to the oil and gas industry and is used in environmental monitoring of underground placement of liquid industrial waste (IPO) in deep aquifers in the development of gas, gas condensate and oil fields, and also the operation of underground gas storage.

Analysis of the existing state of the art showed the following:

- known method of monitoring for underground placement of IPO in deep aquifers using thermometry, resistivimetry methods, depth of flow measurement and re-cementing control of acoustic and other types of Saratoga, as well as by systematic sampling of deep fluids, representing IPO or a mixture of IPA with formation water from observation wells and their chemical analysis and registration of pressure on the aggregates in the annulus and the mouth of absorbing wells (see Gaev YA Underground disposal of wastewater at the enterprises of the gas industry. - Leningrad: Nedra, 1981, s-142). This method uses a series of observation wells for monitoring as for absorbing the horizon, and Vistalegre aquifers. Their number one landfill disposal IPO can reach one or two dozen wells and more.

The disadvantage of this method is N. ska reliability assessment and reliability monitoring because the fact of the flow GPO in annular and annular space or upstream aquifers can be recorded only at the moment of reaching IPO slaughter observation wells, i.e. much later the infringement of tightness (from several days to months). Furthermore, the method is cumbersome, bulky and, therefore, non-operative, which greatly reduces its effectiveness;

as a prototype we have used the technique to monitor the underground placement of IPO in deep aquifers, including periodic thermometry and stated the trunk absorbing (injection) wells, operating the injection of EPO in the absorption well to check the actual start and actual pressure at the pumping units, the actual pressure at the wellhead tubing (tubing), annular and annular spaces absorbing wells, comparison of the indicators, the status of the technical reliability of the injection system pump units wells and injection process, GPO with the subsequent change of injection modes (see A.S. No. 1162950 from 24.06.1983 in class. E 21 43/14, publ. in No. 23, 1985)

The disadvantage of this method is the inaccuracy and unreliability of monitoring, because the basis of the method lies registration mouth pressure (tubing, sakol nom and annular spaces), which do not reflect the true picture of hydrodynamic changes in the absorbing layer. The temperature and salinity of the injected EPO significantly distort the recorded values of the estuarine pressures. According to experimental studies established that the wellhead pressure in the tubing falls to 0.07 MPa at the depth of 1000 m and mineralization growth of IPO from 10 to 20 g/DM3. Wellhead casing and annular pressure increase of 2.6 MPa when the temperature rises in the well 20 to 25° and With the fall of the density of IPO with a salinity of 10 g/DM3with 1005,3 kg/m3to 1004,1 kg/m3. The prototype argues that in the normal course of the injection wellhead pressure in the tubing, casing and annular spaces absorbing wells does not exceed the initial values, which contradicts both in theory and practice underground hydrodynamics. Therefore it is not always correct is the statement of the authors of this method that check manifold pressure above zero in the casing and annular spaces indicates a pre-alarm or emergency condition injection. From theory and practice of hydrodynamic studies it is known that in the operation of wells pressure changes at constant hydrodynamic performance of the formation. Therefore, the conclusion that the reliability of an injection svidetel is there a constant manifold pressure is wrong. The constant mouth pressure over time in the tubing, according to the authors of the proposed method demonstrates inter-layer flows, IPO, and a comparison of current parameters of the injection process, with initial is inadmissible, because it leads to false conclusions about the state of the injection.

The technical result that can be obtained by carrying out the present invention, is as follows:

increases the validity and reliability monitoring for underground placement of IPO in deep aquifers due to the inclusion in the monitoring system backup wells and the use of predictive performance indicators as absorbing and backup as well as operating parameters of the absorbing layer, which will allow to evaluate the technical reliability of the injection system pump units, absorbing and reserve wells, and injection process, GPO.

The technical result is achieved by using a known method, including periodic thermometry trunk absorbing wells, operating the injection of EPO in the absorption well to check the actual pressure and the costs of pumping units, the actual pressure at the wellhead tubing absorbing wells, comparison of the indicators, the status of the technical reliability of magneta the compulsory system of pumping units wells and injection process, GPO with the subsequent change of injection modes. While the novelty of the claimed method is that advanced before operating the injection GPO spend their trial downloads in the absorption well, step by changing the flow rate. Known in hydrogeology equation absorption determine the source of hydrodynamic parameters for the calculation of the forecast performance indicators absorbing and backup wells. In the process of operating the injection GPO additionally registered in the poison the well the actual pressure at the bottom, the actual pressure at the mouth in the annulus, the actual consumption of IPO on the mouth, the actual position from the hole bottom, the upper and lower bounds of the interval absorption. Additionally registered in the backup well the actual pressure at the bottom, the actual position of the liquid level from the wellhead, the upper and lower bounds of the interval absorption. Then compare the forecast performance indicators absorbing and backup wells with actual and consider the different conditions that arise from this comparison, recommending specific actions to the operator, making the injection of EPO.

A test injection with step change in the flow rate is conducted to establish the equations of acquisitions:

where P° Pspl- natural formation pressure in the poison the well before pumping, MPa;

PS Zab- downhole pressure during the test injection in the poison the well, MPa;

Q

f
PS lips
actual consumption IPO at the mouth of absorbing wells at their trial injection, m3/day;

a, b, C - empirical coefficients obtained by approximatevalue of absorption curve (flat curve).

On the basis of the equation of absorption determine hydrodynamic parameters needed later to calculate the predictive performance indicators absorbing and backup wells.

Maximum flow of IPO when their trial injection should not be less than 60% from the design value that is regulated by the “Temporary instruction hydrodynamic studies of reservoirs and wells” (appr. Zam. Chairman of the state Committee on fuel industry C. Orujov 28.04.1963,), research Institute, Moscow, 1963

From equation (1) calculate the ratio of pickup (To) poison the well

Poison the well

The prediction performance indicators absorbing wells.

R

PR
PS Zab
forecast pressure at the bottom of the absorbing wells, MPa.

R

PR
PS Zab
- is a very important characteristic of the injection process, IPO, because it only describes the processes occurring in the reservoir. The main changes in the reservoir by injecting into it IPO is that in the reservoir to force introduced a certain amount of EPO, which here replaces formation water, pushing them from absorbing wells. This process is carried out by increasing reservoir (downhole) pressure at the point of location of the absorbing wells and the formation of a cone discharge (repression) around it.

P

PR
PS Zab
calculated by the formula

where P°PS Zab- downhole pressure during the test injection in the poison the well, MPa;

Q

PR
PS lips
- forecasted consumption IPO at the mouth of absorbing wells, m3/day;

kh/μ - water permeability LP is a hundred, m3/MPa· day;

k is the permeability, m2;

h is the reservoir thickness, m;

μ the viscosity of GPA, MPa· day;

Rtothe path of influence of injection, m;

where χ - piezo-conductivity of the layer, m2;

t - duration of injection, day;

r0is the radius of the absorbing wells, M.

Hydrodynamic parameters (kh/μ , χ ) is determined by the results of the pilot injection.

The water permeability of the formation (kh/μ ) is determined by conversion according to (3)

The thickness of the layer (h) is determined according to the standard or TermoSanitari.

The viscosity of IPO (μ ) is determined experimentally in the laboratory or from lookup tables.

Piezo-conductivity of the reservoir (χ ) also determine the results of the hydrodynamic studies by the formula

where m is the porosity of the reservoir, the shares;

βIPOthat βwith- compressibility factor of IPO and skeleton formation, MPa-1.

From the dependence (3) shows that in the normal course of injection R

PR
PS Zab
may not be permanent. At constant k, h, μ , Q
PR
PS lips
it grows by increasing Rto; its growth will be observed with increasing Q
PR
PS lips
and (or) μ reduction of h and k.

R

PR
PS lips
- forecast wellhead pressure in the tubing absorbing wells, MPa.

Is determined by the following dependencies:

where Δ PTr-pressure loss by friction, MPa;

ρ - the average density of EPO in the wellbore, kg/m3;

g - free fall acceleration, m2/s;

H - the height of the trunk of the absorbing liquid in the well, m

where Q

PR
PS lips
-forecasted consumption IPO at the mouth of absorbing wells, m3/day;

L is the length of tubing absorbing wells, m;

d is the internal diameter of the tubing, see

The density of IPO (ρ ) depends on salinity, temperature and pressure in the poison the well

P=f(M, t, R).

The density of IPO (ρ ) is determined experimentally in the laboratory at the conditions at 20° C, calculated by empirical formulas or by measuring the pressure in the poison the well, using the dependence (7).

The height of the liquid column in the poison well (N) is determined by measuring its depth level.

R

PR
PS satr
, P
PR
PS EAK
, P
PR
PS MK
- forecast wellhead casing pressure, annulus and annular spaces absorbing wells.

If the construction of absorbing wells installed packer, the wellhead pressure in these spaces absorbing wells equal to zero.

If the packer is not set, the specified pressure is determined by the formula

where H is the height of the liquid column in the poison the well, m;

ρ - density of the fluid filling the said space absorbing wells, kg/m

Wellhead casing pressure, annulus and annular spaces absorbing wells will depend on the temperature of the liquid that fills these spaces. With ro is that the temperature of filling these spaces are fluid specified pressure will grow, and with the fall of temperature to fall.

Q

PR
PS lips
- forecasted consumption IPO at the mouth of absorbing wells, m3/day.

Value forecast consumption IPO at the mouth of absorbing wells is determined by the project landfill underground placement of IPO.

L

PR
PS Zab
- the predicted position of the face from the mouth of absorbing wells, M.

The predicted position of the face should not exceed the lower limit of the interval of absorption.

L

PR
PS NG
-L
PR
PS VG
- the forecast position of the lower and upper bounds of the interval absorption absorbing wells, M.

The predicted position from the mouth of the upper limit of the interval of absorption absorbing wells should not exceed the upper boundary of the perforated interval.

The actual operational characteristics of the absorbing wells.

P

PS Zab
the actual hole (reservoir) pressure absorbing wells, MPa.

Downhole pressure measured depth gauges of different brands of type LSG. MH etc.

R

f
SS tubing
, P
f
PS satr
, P
f
PS MK
, P
f
SS Zack
the actual pressure at the mouth of the pump-compressor plant

pipes, annular, annular, annular spaces absorbing wells, MPa. Their measurement is technical or exemplary gauges (MO CL 04).

Q

f
PS lips
actual consumption IPO at the mouth of absorbing wells, m3/day.

Determine the flow meters of different brands (or volumetric).

L

f
PS Zab
- the actual position of the face of the absorbing wells, M.

Determined by measuring the depth stop when run into the well of any depth of the device.

L

f
PS NG
-L
f
PS VG
- the actual position of the lower and upper bounds of the interval acquisitions, m

Determined by deep thermometry.

Beginning of sedimentation of reservoir and decrease the effective thickness of its fixed lifting sandy head tube on the bottom above the lower limit of the interval of absorption.

Reserve well

When designing landfills, underground placement of IPO enterprises permanent actions (gas condensate, oil field, underground gas storage) necessarily requires the presence of at least one backup well to ensure a smooth injection of EPO.

Proposed by the present method to turn the idle up to a certain point back well into the monitoring system for underground placement of IPO. This allows to increase the reliability of monitoring due to the clarification of the hydrodynamic parameters of the reservoir is not only the method trial download, but methods of interference test backup wells.

The forecasted performance indicators backup wells.

R

PR
RVs Zab
- predicted bottom-hole pressure in the back-well, MPa.

where R

0
RVs Zab
- pressure on the back face of the well prior to the injection, MPa;

Q

PR
RVs mouth
- forecasted consumption IPO at the mouth of the backup wells, m3/day;

R is the distance between the back and absorbing wells, M.

l

PR
RVs ur
- forecasted value of the level in the back-well, m from the mouth.

where NRVsdepth measuring downhole pressure (P

f
RVs Zab
), m;

ρ - the density of the formation water, kg/m3.

L

PR
RVs Zab
- the forecast position of the bottom backup wells, M.

The predicted position of the face should not exceed the lower limit of the interval of absorption.

l

PR
RVs NG
-l
PR
RVs VG
- the forecast position of the lower and upper bounds of the interval absorption backup wells, M.

The predicted position from the mouth of the upper limit of the interval of absorption backup wells should not exceed the upper boundary of the perforated interval.

Actual performance indicators backup wells.

P

f
RVs Zab
the actual pressure on the back face of the well, MPa.

Measure the depth gauges of different brands (MH, IAS).

l

f
RVs Zab
- the actual level from the mouth of the well fluid in the back-well, m

Measured by the level gauge.

l

f
RVs Zab
- the actual position from the mouth of slaughter backup wells, M.

Determined by measuring the depth stop when run into the well of any depth of the device.

l

f
RVs NG
-l
f
RVs VG
- the actual position from the mouth of the lower and upper bounds of the interval absorption backup wells, M.

Determined by deep thermometry.

Injection units

The forecasted performance indicators pumping units.

R

PR
PS
forecast pressure at the pump absorbing wells, MPa.

Determined passport characteristic of the pump unit.

The pressure drop on the feed pump shows the impulse feed of IPO pipeline. The increase in the pressure feed line equal growth forecast pressure at the mouth of the absorbing hole in the tubing.

Q

PR
PS
- forecasted consumption IPO on the pump absorbing wells, m3/day.

Determined by the project landfill underground placement of IPO.

Reducing consumption of IPO indicates partial sedimentation of reservoir, and the increase may be due to a gust feed line.

The actual operational characteristics of the pumping units.

R

f
PS
the actual pressure on the pump absorbing wells, MPa.

Measured standard or technical gauges.

Q

f
PS
actual consumption IPO on the pump absorbing wells, m3/day.

Measured by the flow meter.

During the operation of the landfill underground placement of IPO in deep aquifers compare forecasted and actual characteristics of absorbing and reserve wells, in the case of equality ascertain the absence of violations of absorbing design of well tubing, annulus, annular and annular spaces, i.e. cross flows no.

Provided that:

P

f
PS satr
>P
np
PS satr
; P
f
PS satr
R
f
SS tubing
;

R

f
RVs Zab
=nst; l
f
RVs ur
=l
PR
RVs ur

detect a violation of designs absorbing wells.

Provided that:

P

f
PS
<P
PR
PS
; Q
f
PS the AC
Q
PR
PS
;

R

f
PS Zab
<P
PR
PS Zab
: P
f
SS tubing
<P
PR
SS tubing

detect leaks feed line.

Provided that:

L

f
PS Zab
L
PR
PS Zab
; L
f
PS Zab
L
f
PS NG
;

L

F
PS VG
=L
PR
PS VG

to detect the beginning of sedimentation of reservoir sediments, GPO.

Provided that:

R

f
PS
>R
PR
PS
; Q
f
PS lips
<Q
PR
PS lips
;

R

f
PS Zab
>P
PR
PS Zab
; P
f
SS tubing
>R
PR
SS tubing
,

F
PS Zab
<L
f
PS NG
; L
f
PS VG
L
PR
PS VG

identify partial clogging of the reservoir, reducing pickup absorbing wells.

Provided that:

P

f
PS
>R
PR
PS
; P
f
PS Zab
>R
PR
NA delu
;

R

f
SS tubing
>R SS tubing
PR
; Q
f
PS lips
Q
PR
PS lips
;

R

f
RVs Zab
>R
PR
RVs Zab
; l
f
RVs ur
l
PR
RVs ur
;

L

f
PS Zab
L
f
PS NG
; L
f
PS VG
=L
PR
PS VG
;

L

F
PS NG
=L
PR
PS NG
; l
f
RVs Zab
>l
f
RVs NG

reveal the complete clogging of the reservoir and the lack of communication absorbing wells with reservoir.

Provided that:

R

f
PS Zab
<P
PR
PS Zab
; P
f
SS tubing
<P
PR
SS tubing
;

R

f
RVs Zab
<P
PR
RVs
; L
f
RVs ur
>l
PR
RVs ur
;

L

f
PS Zab
L
PR
PS NG
; L
f
PS VG
=L
PR
PS VG
;

L

f
PS NG
=L
PR
PS NG

to detect changes of the hydrodynamic parameters of the reservoir in the direction of their improvement.

Provided that:

R

f
PS Zab
<P
PR
PS Zab
; P
f
SS tubing
<P
PR
SS tubing
;

R

f
RVs Zab
<P
PR
RVs Zab
; l
f
RVs NG
>l
PR
RVs NG

identify education annulus or annular flows.

Provided that:

R

f
RVs Zab
=nst≠ P
PR
RVs Zab
;

l

f
RVs ur
=nst≠ l
PR
RVs ur
;

l

f
RVs NG
<l
PR
RVs VG

identify the lack of communication with the reservoir back to the well because the well does not respond to the injection of EPO.

The analysis of patent documents and scientific literature showed that the famous trial download of EPO in the absorption well, and the mathematical expression of equation absorption (see Hydrogeological studies to substantiate underground disposal of industrial waste/ State geological enterprise “gidrospecgeologija”; edited Vagabondage. -M.: Nedra, 1993, s). We have not identified technical solutions, based on the signs consistent with the rest of the set of distinctive features of the proposed technical solution. Thus, the claimed us the essential features do not follow explicitly from the parsed prior art, i.e., have an inventive step.

B the more detail the essence of the invention is described on the example of modeling the organization of the monitoring system for underground placement of drains yamsoveiskoe gas condensate field (AGCM).

Wastewater generated during the extraction of gas AGCM contain such unusual nature of the components, as triethylene glycol, methanol, petroleum products, phenols and other

For injection is a polygon consisting of two deep wells: absorbing 1H -1273 m and 2P reserve -1270 m

The reset discharge in the amount of 160 m3/day is within Yamsoveiskoe structure, which are dome-shaped uplift, directly under waterfowl Cenomanian gas Deposit at 110 m below the gas-contact, in its bottom part.

At the present time in connection with the construction and subsequent commissioning of the booster compressor station total volume of liquid industrial waste AGCM may increase to 310 m3/day.

We found that the absorbing hole 1P able to take EPO with an output of 310 m3/day during the crackdown on the reservoir at the end of the life of the landfill (in 22 years) 6,45 MPa.

Before the operation of the landfill underground placement of IPO on AGCM conducted a trial download on the five modes with speed changing consumption GPO: 198, 347, 464, 640, 716 m3/day. When this repression on downhole pressure were respectively: 4,32; 5,47; 5,57; 5,79; 5,80 MPa. Design ow of EPO on AGCM is 310 m3/day.

According to the data established the absorption equation (1):

PS PL-R°PS Zab=9*10-6*(Q

f
PS lips
)2-0,011*Q
f
PS lips
-2,79

On the basis of these studies determined the hydrodynamic parameters:

a) water permeability k*h/μ =6.32*10-3m3/MPa*s;

b) bezopastnosti χ =23,9*10 m2/day.

I hope the forecast performance indicators absorbing wells 1P.

R

PR
PS Zab
-predicted bottom-hole pressure in the well 1P in the initial period of operation is calculated using formula (1):

R

PR
PS Zab
=11,18-9· 10-6·3102+0,011· 310+2,79=16,51 MPa

This 11,18 MPa (P

0
PS Zab
-the size of the hole (reservoir) pressure at the time prior to the operation of the landfill at a depth of 1210 m

Bottom-hole pressure in the well 1 is supposed to change over time. For example, one year the operation of the landfill R

PR
PS Zab
will be

Forecast wellhead pressure in the tubing at the start of the operation of the landfill are calculated according to the formula (7)

R

PR
PS Zab
=11,18+(16,51-11,18)+0,026-1210*9,8*10-3=4,65 MPa;

pressure loss by friction is calculated using formula (8)

ARTr=2,256*10-5*3102*1210/11,45=0,026 MPa;

after a year of operation of the landfill forecast wellhead pressure in the tubing will be

R

PR
PS satr
=R
PR
SS Zack
=R
PR
PS MK
=0, since the injection hole 1H is conducted through the tubing with the installation of the packer.

Q

PR
PS lips
=310 m3 /day;

L

PR
PS Zab
=1250 m;

L

PR
PS NG
-L
PR
PS VG
=1163-1218 m (on the results of deep thermometry).

I hope the forecast performance indicators backup wells 2S.

Predicted bottom-hole pressure in the back-well 2S at the start of the operation of the landfill

R

PR
RVS Zab
=11,23 MPa

The distance between the wells 1P and 2P is 100 meters

The predictive value of the level in the back-hole 2S in a year of operation of the polygon calculated by the formula (11)

from the mouth;

l

PR
RVs Zab
=1252 m;

l

PR
RVs NG
-l
PR
RVs VG
=1181-1237 m (on the results of deep thermometry).

The forecasted performance indicators pumping units.

R

PR
PS
=6 MPa;

Q

PR
PS
=310 m3/day.

Further, in the example presented data on forecasted and actual values of the operating characteristics of absorbing wells 1H, backup wells 2S and injection units with different States of the injection.

In the normal course of injection of the actual performance of the absorbing wells H1 and backup wells 2S will be equal to the forecast by the end of the 1st year of operation will be:

a) parameters on the discharge units

R

PR
PS
=P
f
PS
=6 MPa; Q
PR
PS
=Q
PR
PS
=310 m3/day;

b) parameters for absorbing well 1P

Q

PR
PS lips
=Q
f
PS lips
=310 m3/day; P
PR
PS Zab
=P
f
PS Zab
=17,48 MPa;

R

PR
SS tubing
=P
f
SS tubing
=5,61 MPa; P
PR
PS satr
=P
f
PS satr
=0;

R

PR
SS Zack
=R
f
SS Zack
=0; R
PR
PS MK
=R
f
PS MK
=0; L
PR
PS Zab
=L
f
PS Zab
=1250 m;

L

PR
PS NG
-L
PR
PS VG
=L
f
PS NG
-L
f
PS VG
=1163-1218 m;

in settings on the backup well 2S

P

PR
RVs Zab
=P
f
RVs Zab
=to 11.52 MPa;

l

PR
RVs ur
=l
f
RVs ur
=41 m;

l

PR
RVs Zab
=l
PR
RVs Zab
=1252 m;

l

PR
RVs NG
-l
PR
RVs VG
=l
f
RVs NG
-l
f
RVs VG
=1181-1237 m

Injection continues.

Provided

P

f
PS satr
>P
PR
PS satr
=5,61>0

R

f
PS satr
R
f
SS tubing
=5,61 MPa and immutability of the other parameters, identify the seal of the packer bore 1H, injection into the well 1P stop, translate the stream of IPO back on the well 2P, well 1P repair.

Provided

R

f
PS
<P
PR
PS
=5,3<6,0; Q
f
PS
Q
PR
PS
=360>310;

P

f
PS Zab
<P
PR
PS Zab
=15,00<17,48; P
f
SS tubing
<P
PR
SS tubing
=3,0<5,61

identify impulse feed pipe and leakage of IPO to the surface. Injection into the well 1P stop, translate the stream of GPO backup pipeline, establish the place of impulse and eliminate it, liquidate the consequences of the spill GPO.

Provided

L

f
PS Zab
L
PR
PS Zab
=1220<1250;

L

f
PS Zab
L
f
PS NG
=1220>1218;

L

f
PS VG
=L
PR
PS VG
=1163 m

In the case of R

f
PS Zab
=R
PR
PS Zab
=18,20=18,20, P
f
SS tubing
=R
PR
SS tubing
=4,00=4,00. To detect the beginning of sedimentation of reservoir sediments, GPO additionally assess the compatibility of GPO with reservoir water and satisfactory compatibility pumping continues. In the case P
f
PS Zab
>R
PR
PS Zab
=18,00>17,48, P
f
SS tubing
>R
PR
SS tubing
=6,20>5,61. Stop the injection of EPO in the hole H1, translate the stream of GPO backup pipeline and restore the injectivity of the well.

Provided

P

f
PS
>P
PR
PS
=6,7>6,0; Q
f
PS lips
<Q
PR
PS
=250<310;

P

f
PS Zab
>P
PR
PS Zab
=18,00>17,48; P
f
SS tubing
>P
PR
SS tubing
=6,20>5,61$

L

f
PS Zab
<L
f
PS NG
=1208<1250;

L

f
PS VG
L
PR
PS VG
=1218>1208;

with increasing pressure on the pump at the bottom and the mouth of the tubing absorbing wells 1H, reducing consumption, pumping and lifting position of the face above the lower limit of the interval of the absorption stop the injection of EPO in the hole H1, translate the stream of IPO in the hole 2S, removed from the borehole bottom 1H sandy tube, are working on restoring the injectivity of the reservoir.

Provided

P

f
PS
>P
PR
PS
=6,7>6,0; P
f
PS Zab
>P
PR
PS Zab
=18,00>17,48;

P

f
SS tubing
>P
PR
SS tubing
=6,0>5,61; Q
f
PS lips
Q
PR
PS
=280<310;

R

f
RVs Zab
>R
PR
RVs Zab
=18,20>17,48;

l

f
RVs ur
l
PR
RVs ur
=23<41;

L

f
PS Zab
L
f
PS NG
=1218>1208; L
f
PS VG
=L
PR
PS VG
=1163 m;

L

f
PS NG
=L
PR
PS NG
=1218; l
f
RVs Zab
>l
f
RVs NG
=1240>1230;

revealed complete clogging of the reservoir and the lack of communication absorbing wells 1P layer.

Download IPO in the hole 1P stop, overhaul wells 1P.

Provided

P

f
PS Zab
<P =16,5<17,48; P
PR
PS Zab
f
SS tubing
<P
PR
SS tubing
=4,00<5,61;

P

f
RVs Zab
<P
PR
RVs Zab
=11,40<to 11.52; l
f
RVs ur
>l
PR
RVs ur
=53>41;

L

f
PS Zab
L
f
PS NG
=1250>1218; L
f
PS VG
=L
PR
P is VG
=1163;

L

f
PS NG
=L
PR
PS NG
=1218;

to detect changes of the hydrodynamic parameters in the direction of their improvement, because the cone repression reached areas improved hydrodynamic parameters.

Provided

P

f
PS Zab
<P
PR
PS Zab
=16,0<17,48; P
f
SS tubing
<P
PR
SS tubing
=3,8<5,61;

P

f
RVs Zab
<P
PR
RVs Zab
=11,23<to 11.52; l
f
RVs
NG>l
PR
RVs NG
=1237>1230;

identify education annulus or annular flows. Injection into the well 1P stop, translate the stream of IPO the bore 2S. Carry out special work for establishing the place of flow of EPO and its elimination.

Provided

R

f
RVs Zab
=const≠ P
PR
RVs Zab
=11,72 MPa;

l

f
RVs ur
=const≠ l
PR
RVs ur
=20 m from the mouth.

Reveal that you back well 2S is not connected to a reservoir. You want restore it by removing the sand tube. Operation is possible without stopping the injection of EPO in the hole H1.

Thus, the use of predictive data in the monitoring system for underground placement of IPO allows you to provide (warning is suggested) potential emergency situations and to make the monitoring system more efficient, flexible, environmentally friendly and more economical, since it does not require the construction of observation wells.

The claimed technical solution meets the criteria of patentability, namely the condition of novelty, inventive step and industrial applicability.

Method of monitoring for underground placement of liquid industrial waste in deep aquifers, including periodic thermometry trunk absorbing wells, operating the injection of liquid industrial waste (IPO) in the absorption well to check the actual pressure and the costs of pumping units, the actual pressure at the mouth of pump-compressor pipes (tubing) absorbing wells, comparison of the indicators, the status of the technical reliability of the injection system pump units wells and injection process, GPO with the subsequent change of injection modes, characterized in that it further before operating the injection GPO spend their trial downloads in the absorption well, speed changing consumption and the equation of absorption determine the source of hydrodynamic parameters for the calculation of the forecast performance indicators absorbing and reserve wells, and in the process of operating the injection of EPO additionally register the absorbing well the actual pressure at the bottom hole, the actual pressure at the mouth in the annulus, the actual consumption of IPO on the mouth, the actual position from the hole bottom, the upper and lower bounds of the interval acquisitions, as well as in the back-up well is the actual pressure at the bottom, the actual position of the liquid level from the wellhead, the upper and lower bounds of the interval absorption, thus compare the forecast performance indicators absorbing and backup wells with actual and in case of equality continue downloading IPO in the absorption well, and when the condition

R

f
PS satr
>R
PR
PS satr
; P
f
PS satr
=R
f
SS tubing
;

R

f
RVs Zab
=const; l RVs ur
f
=l
PR
RVs ur
,

where P

f
PS satr
the actual pressure at the mouth in the annulus absorbing wells, MPa;

P

PR
PS satr
forecast pressure at the wellhead annulus absorbing wells, MPa;

R

f
SS tubing
the actual pressure at the mouth of the absorbing hole in the tubing, MPa;

R

f
RVs Zab
the actual pressure at the bottom hole in the back-well, MPa;

l

f
RVs ur
- the actual position of the liquid level from the level in the back-well, m;

l

PR
RVs ur
- the forecast position of the liquid level from the mouth back in the hole, m,

stop the injection of EPO in the absorption well, translate the stream of IPO back on the well, determine the cause of pressure loss in the annulus and eliminate it, provided

R

f
PS
<P
PR
PS
; Q
f
PS
Q
PR
PS
;

R

f
PS Zab
<P
PR
PS Zab
; P
f
SS tubing
<P
PR
SS tubing
,

where R

f
PS
- the actual pressure pump, which pumps IPO in the absorption well, MPa;

P

PR
PS
forecast pressure pump, which pumps IPO in the absorption well, MPa;

Q

f
PS
- the actual flow rate on the pump, which pumps IPO in the absorption well, m3/day;

Q

PR
PS
forecast consumption per pump, which pumps IPO in the absorption well, m3/day;

P

f
PS Zab
the actual pressure at the bottom of the absorbing wells, MPa;

P

PR
PS Zab
forecast pressure at the bottom of the absorbing wells, MPa;

R

PR
SS tubing
- forecast pressure at the mouth of the absorbing hole in the tubing, MPa,

stop the injection of EPO in the absorption well, translate the stream of GPO backup pipeline, establish the cause of the pressure loss of the feed pipe and remove it when the condition

L

f
PS Zab
L
PR
PS Zab
; L
f
PS Zab
≥ LPS NG; L
f
PS VG
=L
PR
PS VG
,

where L

f
PS Zab
- the actual position of the face from the mouth of absorbing wells, m;

L

PS Zab
PR
- the predicted position of the face from the mouth of absorbing wells, m;

L

f
PS NG
- the actual position from the mouth of the lower limit of the interval of absorption absorbing wells, m;

L

f
PS VG
- the actual position from the mouth of the upper limit of the interval of absorption absorbing wells, m;

L

PR
PS VG
- projected position from the mouth of the upper limit of the interval of absorption absorbing wells, m,

in the case of R

f
PS Zab
=R
PR
PS Zab
; P
f
SS tubing
=R
PR
SS tubing
about oleaut download IPO in the absorption well,

in the case P

f
PS Zab
>R
PR
PS Zab
; P
f
SS tubing
>R
PR
SS tubing
stop the injection of EPO in the absorption well, translate the stream of IPO back on the well and restore the injection capacity of the well,

provided

R

f
PS
>R
PR
PS
; Q
f
PS lips
<Q
PR
PS lips
;

R

f
PS Zab
>R
PR
PS Zab
; P
f
SS tubing
>R
PR
SS tubing
;

L

f
PS Zab
<L
f
PS NG
; L
f
PS VG
L
PR
PS VG
,

where Q

f
PS lips
actual consumption IPO at the mouth of absorbing wells, m3/day;

Q

PR
PS lips
- forecasted consumption IPO at the mouth of p is gosausee well, m3/day,

stop the injection of EPO in the absorption well, translate the stream of IPO back on the well and restore the injection capacity of the well,

provided

R

f
PS
>R
PR
PS
; P
f
PS Zab
>P
PR
PS Zab
;

R

f
SS tubing
>R
PR
SS tubing
; Q
f
PS lips
Q
PR
PS lips
;

R

f
RVs Zab
>R
PR
RVs Zab
; l
f
RVs ur
l
PR
RVs ur
;

L

f
PS Zab
L
f
PS NG
; L
F
PS VG
=L
PR
PS VG
;

L

f
PS NG
=L
PR
PS NG
; l
the
RVs Zab
>l
f
RVs NG
,

where P

PR
RVs Zab
forecast pressure at the bottom backup wells, MPa;

L

PR
PS NG
- projected position from the mouth of the lower limit of the interval of absorption absorbing wells, m,

l

f
RVs Zab
- the actual position of the face from the mouth backup wells, m;

l

f
RVs NG
- the actual position from the mouth of the lower limit of the interval of absorption backup wells, m,

stop the injection of EPO in the absorption well, translate the stream of IPO on the back well, overhaul absorbing wells,

provided

R

f
PS Zab
< P
PR
PS Zab
; P
f
SS tubing
<P
PR
SS tubing
;

R

f
RVs Zab
<P
PR
RVs
; l
f
RVs ur
>l
PR
RVs ur
;

L

f
PS Zab
L
PR
PS NG
; L
f
PSWG
=L
PR
PS VG
;

L

f
PS NG
=L
PR
PS NG
,

re-calculate the predictive performance of the absorbing and reserve wells, compare the latter with the actual and in case of equality of values continue downloading IPO in the absorption well, but when the previous conditions, technological operations again,

provided

R

f
PS Zab
<P
PR
PS Zab
; P
f
SS tubing
<P
PR
SS tubing
;

R

f
RVs Zab
<P
PR
RVs Zab
; l
f
RVs NG
>l
PR
RVs NG
,

where l

PR
RVs NG
- projected position from the mouth of the lower limit of the interval of absorption backup wells, m,

stop the injection of EPO in the absorption well, translate the stream of IPO back on the well and eliminate annular flows in the poison the well,

provided

R

f
RVs Zab
=nst≠ P
PR
RVs Zab
;

l

f
RVs ur
=nst≠ l
PR
RVs ur
;

l

f
RVs NG
<l
PR
RVs VG
,

where l

PR
RVs VG
- projected position from the mouth of the upper limit of the interval of absorption backup wells, m,

continue pumping IPO in the absorption well, and back keyhole repair.



 

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