CN103902827B - Flow unit division method of carbonate-rock horizontal wells - Google Patents
Flow unit division method of carbonate-rock horizontal wells Download PDFInfo
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Abstract
The invention discloses a flow unit division method of carbonate-rock horizontal wells. The flow unit division method includes the steps of judgment of communicating relation among the wells; determination of an oil drainage area; recognition of reservoir body characteristics and establishment and verification of numerical well testing models. The flow unit division method is of great importance to production development and management and subsequent potential tapping of a well mine. Development of well drilling can be ensured not to employ untouched flow units aiming at complex geological features of anisotropy and the like of carbonate reservoirs, a great deal of funds can be saved, and economic effectiveness can be improved. By the flow unit division method, the flow units can be accurately divided, and the great importance to the production development and management and subsequent potential tapping of the well mine can be achieved.
Description
Technical field
The invention belongs to carbonate rock hydrocarbon reservoir development technique field, more particularly to a kind of carbonate rock horizontal well flowing list
First division methods.
Background technology
Flow unit be with identical seepage flow characteristics, aborning can as the reservoir units of a relatively independent exploitation,
Well in same flow unit has identical the sedimentary age and depositional environment, and relatively uniform drop of pressure or pressure becomes
Change trend, and with same or analogous production variation characteristic, and there is inter-well interference phenomenon in Development and Production.Therefore, accurately
Division of flow units, specifies flow unit and is controlled by individual well or connection well group for production development is managed and the later stage taps the latent power tool
It is of great significance.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of carbonate rock horizontal well flow unit division methods, it is intended to for well
The production development management of ore deposit and later stage tap the latent power offer guidance.
The embodiment of the present invention is achieved in that a kind of carbonate rock horizontal well flow unit division methods, the carbonate
Rock horizontal well flow unit division methods are comprised the following steps：
The adjacent Liang Koujing of step one, selection, interwell communication relation judges；
Step 2, in horizontal well under enter pressure gauge, measurement pressure recovers data；After obtaining pressure recovery data, adopt
Responding curve of well well-logging method, chooses the border being consistent with single horizontal well or the connection construction location of well group, reservoir distribution scope
Model calculates drainage area；
Step 3, with reference to Seismic reflection character and reservoir distribution scope, single or multiple storages are determined in drainage area
The particular location of collective；According to single horizontal well or connection well group different times PVT sampling data and oil gas aquation certification of registered capital material,
The property of analyzing oil and gas water or other fluid situation over time, determines the fluid properties of each Reservoir Body；
Step 4, recover data from pressure in second step, with numerical well testing module in Saphir softwares, set up as follows
The numerical well testing model of single horizontal well or connection well group；Using PEBI grids and numerical technology, drainage area is debugged
The numerical value of interior each Reservoir Body mobility ratio and dispersion ratio, until the pressure matched curve of built numerical well testing model and measured curve phase
High like spending, coefficient correlation reaches design requirement, and the permeability magnitude of each region interpretation meets geologic feature, then judges single water
The flow unit boundary demarcation of horizontal well or connection well group is reasonable；Otherwise pressure matched curve and the reality of built numerical well testing model
Survey curve similarity is low, and coefficient correlation is not reaching to design requirement, then need to carry out the work again, until built numerical well testing model
Pressure matched curve and measured curve coefficient correlation reach design requirement till.
Further, in step one, the method that interwell communication relation judges includes two methods：
Method one, does the connectedness that interference test test is judged between adjacent well, and in interference test test, perturbed well sends
Exciting signal, judges two mouthfuls of well connections if the signal that perturbed well sends is monitored in inspection well, otherwise then judges not connect；
Method two, does the connectedness that tracer test is judged between adjacent well, and tracer is added in water injection well, if examined in inspection well
The tracer for measuring addition then judges two mouthfuls of well connections, otherwise then judges not connect.
Further, if it is determined that two mouthfuls of wells are disconnected, then single horizontal well flow unit border is divided, otherwise is then drawn
Divide the flow unit border of connection well group.
Further, in step 3, the Reservoir Body number of single horizontal well or connection well group control is determined；By real-time
Monitor single horizontal well or connection well group production process, analyzing oil and gas with the time production decline law, if oil gas is with the time
Production decline law then judge have multiple Reservoir Bodies to participate in feed flows in double exponential decreases, if oil gas with the production decline law of time in single
Exponential decrease then judges it is that single Reservoir Body participates in feed flow.
Further, in step 4, numerical well testing model includes：Each well whole process pressure, yield data are loaded, with draining face
Product as peripheral boundary, in drainage area each Reservoir Body as independent seepage flow variation zone, and with thickness in work area and porosity
Weighted average give assignment.
The carbonate rock horizontal well flow unit division methods that the present invention is provided, are judged using interwell communication relation；Draining
Area determines；Preserve body characteristicses understanding；Numerical well testing model is set up and checking；Can accurate division of flow units, for Jing Kuang
Production development management and later stage tool of taping the latent power be of great significance.The present invention can be directed to carbonate reservoir anisotropism
Deng complicated geological feature, it is ensured that development well bores to meet does not employ flow unit, can save substantial contribution, increases economic efficiency.
Description of the drawings
Fig. 1 is carbonate rock horizontal well flow unit division methods flow chart provided in an embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein is not used to only to explain the present invention
Limit the present invention.
Below in conjunction with the accompanying drawings and specific embodiment to the present invention application principle be further described.
As shown in figure 1, the carbonate rock horizontal well flow unit division methods of the embodiment of the present invention are comprised the following steps：
S101：Interwell communication relation judges；
S102：Drainage area determines；
S103：Preserve body characteristicses understanding；
S104：Numerical well testing model is set up and checking.
The present invention's concretely comprises the following steps：
The first step, judges the connectedness between adjacent well；Concrete grammar is：
Choose adjacent Liang Koujing；
Method one, does the connectedness that interference test test is judged between adjacent well.In interference test test, perturbed well sends
Exciting signal, judges two mouthfuls of well connections if the signal that perturbed well sends is monitored in inspection well, otherwise then judges not connect；
Method two, does the connectedness that tracer test is judged between adjacent well.Tracer is added in water injection well, if examined in inspection well
The tracer for measuring addition then judges two mouthfuls of well connections, otherwise then judges not connect；
If it is determined that two mouthfuls of wells are disconnected, then single horizontal well flow unit border is divided, otherwise then divide connection
The flow unit border of well group；
Second step, calculated level well drainage area；
Enter pressure gauge under in horizontal well, measurement pressure recovers data；
After obtaining pressure recovery data, using responding curve of well well-logging method, choose and single horizontal well or connect well group
The boundary model that construction location, reservoir distribution scope are consistent calculates drainage area；
3rd step, determines the Reservoir Body number and fluid properties of horizontal well control；
The first step determines the Reservoir Body number of single horizontal well or connection well group control.By the single level of real-time monitoring
Well or connection well group production process, analyzing oil and gas with the time production decline law, if oil gas is in the production decline law of time
Double exponential decreases then judge have multiple Reservoir Bodies to participate in feed flow, sentence if oil gas successively decreases with the production decline law of time in single index
Disconnected is that single Reservoir Body participates in feed flow；
With reference to Seismic reflection character and reservoir distribution scope, the tool of single or multiple Reservoir Bodies is determined in drainage area
Body position；
According to single horizontal well or connection well group different times PVT sampling data and oil gas aquation certification of registered capital material, analysis oil
The property of gas water or other fluid situation over time, determines the fluid properties of each Reservoir Body.
4th step, sets up numerical well testing model, the reasonability on insolation level well stream moving cell border；
Recover data from pressure in second step, with numerical well testing module in Saphir softwares, set up following single water
The numerical well testing model of horizontal well or connection well group：Each well whole process pressure, yield data are loaded, is made with drainage area in second step
For peripheral boundary, in drainage area each Reservoir Body as independent seepage flow variation zone, and with thickness in work area and porosity plus
Weight average value gives assignment；
Using PEBI grids and numerical technology, the number of each Reservoir Body mobility ratio and dispersion ratio in drainage area is debugged
Value, until the pressure matched curve of built numerical well testing model is high with measured curve similarity, coefficient correlation reaches design requirement,
The permeability magnitude of each region interpretation meets geologic feature, then judge the flow unit side of single horizontal well or connection well group
Boundary divides reasonable；Otherwise the pressure matched curve of built numerical well testing model is low with measured curve similarity, and coefficient correlation does not have
Design requirement is reached, then needs the work for carrying out the step of the first step-the four again, until the pressure fitting of built numerical well testing model is bent
Till line reaches design requirement with the coefficient correlation of measured curve.
With reference to specific embodiment, the present invention will be described in further detail：
By on January 15th, 2014, Ta Zhong I areas had 65 oral examinations and adopt well, and totally 43 mouthfuls of 26,62 wellblocks, account for 66%, pin in tower
Flow unit has been employed to 26,62 wellblocks in tower and flow unit division has not been employed.
1st, interwell communication relation judges：
The common method of table 1 is contrasted
Connected relation is analyzed：
With reference to the connected relation determination methods of high precision, the connected relation in 26,62 wellblocks in tower between well is carried out point
Analysis judges that mainly the connected relation including new well judges the connected relation combing with old well.
(1) TZ26-2H, TZ243 well group is connective judges
Distance about 900m between TZ26-2H wells and TZ243 wells.The well group carried out interference test test, and test content is such as
Under：TZ26-2H wells are perturbed well, and back pressure test (oil nozzle size is carried out successively：4mm, 5mm, 6mm, 7mm) and pressure buildup test
Excitement, TZ243 wells be inspection well, production system it is constant in the case of monitoring well bottom pressure change, carry out in TZ26-2H wells
After exciting about 455 hours, TZ243 wells receive interference signal, and obtain two groups of different Trendline of slope, think this well
Group connection.
Table 2 _ _ TZ26-2H and TZ243 well strata pressure contrast tables
TZ243 and TZ26-2H goes into operation respectively at 2007/7/7 and 2009/4/22, and the initial bottom pressure of TZ26-2H is about
43MPa, initial reservoir pressure coefficient is about 0.99, and stratum is substantially in debt, judges that two wells are connected.Analysis more than comprehensive judges
TZ26-2H with TZ243 wells are connected.
(2) TZ62-7H, TZ622 well group is connective judges
Distance about 550m between TZ62-7H wells and TZ622 wells, reservoir prediction figure shows two well reservoirs not in flakes, and connection can
Energy property is less.With reference to the same height above sea level pressure comparison of contemporaneity, two well pressures difference is larger, may not connect.
Later stage brought in well TZ62-7H pressure is higher than early stage brought in well TZ622, it is comprehensive more than analysis judge TZ62-7H and
TZ622 is not connected.
Table 3 _ _ TZ622 is contrasted with TZ62-7H strata pressures
(3) TZ622-H2, TZ62-6H well group is connective judges
Distance about 920m between TZ622-H2 wells and TZ62-6H wells, according to reservoir prediction, two well reservoirs are developed in flakes, point
Analysis thinks that presence connection may.
The flowing bottomhole pressure (FBHP) monitoring of two wells shows that two well pressure drop trend are close, there is connection possibility；According to being initially laminated
Force data, goes into operation after TZ622-H2 wells, and reservoir pressure coefficient is 0.84, there are obvious formation depletion (such as table 4), and two wells
Fluid properties change identical (such as table 5), comprehensive descision TZ622-H2 connects with TZ62-6H.
Table 4 _ _ TZ622-H2 and TZ62-6H strata pressure contrast tables
Table 5 _ _ TZ622-H2 and TZ62-6H formation fluid property contrast tables
(4) TZ62-1, TZ62-4H well group is connective judges
TZ62-1 and TZ62-4H wells show that two well reservoirs are developed in flakes at a distance of about 300m, reservoir prediction figure, and there is connection can
Can property, and TZ621 wells and offset well TZ62-4H be at a distance of 1300m, and reservoir prediction figure shows two well reservoir developments not in flakes, connection
Possibility is less.
TZ62-4H and TZ62-1 goes into operation respectively at 2009/5/7 and 2005/11/11, and TZ62-4H operation initial stage pressure recovers
Strata pressure 37.84MPa is obtained, pressure coefficient 0.8 has obvious formation depletion (as shown in table 6), meet connection fracture hole list
The pressure drop trend rule of unit.
Table 6 _ _ TZ62-1 and TZ62-4H well strata pressure contrast tables
| Pound sign | Test mode | Production time | TestDate | It is deep in payzone | Middle deep pressure | Pressure coefficient |
| TZ62-1 | Pressure is extensive | 2005.11.11 | 2005.09.15-11.02 | 4932.92 | 57.84 | 1.20 |
| TZ62-4H | Pressure is extensive | 2009.05.07 | 2010.09.03-09.15 | 4882.97 | 37.84 | 0.80 |
Table 7 _ _ TZ62-1 and TZ62-4H well formation fluid property contrast tables
, respectively at 2011/10/11 and 2012/12/14 two-wheeled water filling, TZ62-4H wells are obvious by effect, and the later stage for TZ62-1 wells
It is aqueous significantly raised.Comprehensive descision thinks that TZ62-1 wells are connected with TZ62-4H wells.
(5) TZ621, TZ62-4H well group is connective judges
TZ621 wells are in of a relatively high position, and bottom hole location is higher than TZ62-4H well bottom hole locations, and gas-oil ratio is stable (about
500m or so), without pneumatic jack, judge that TZ621 is not connected with both TZ62-4H according to Hydrocarbon Accumulation property.
Table 8 _ _ TZ621 and TZ62-4H well formation fluid property contrast tables
Therefore, comprehensive descision thinks that TZ621 wells are not connected with TZ62-4H wells.
26 wellblocks in Well 62 field of Central Tarim and tower, judge that altogether combing goes out to connect 6 groups of well group.
Table 9 _ _ Well 62 field of Central Tarim connects well group division table with 26 wellblocks in tower
The test of initial pressure when the monitoring that new well should strengthen dynamic data is particularly gone into operation, to subsequent flowing unit
Evaluation provide foundation.
Step 2, drainage area determines：
The drainage area analysis of individual well or connection well group is intended to the peripheral boundary with reference to static geologic information to flow unit
Portrayed and constraint, with reference to 26,62 wellblock construction locations and reservoir distribution scope in tower, draining face is carried out using square boundary
Long-pending calculating.
According to connected relation judged result, TZ62-1 and TZ62-4H are interconnected co- controlling flow unit, and TZ621 is independent
Control another flow unit.With reference to " elongated rectangular shape shape " geologic feature, seismic reflection and property distribution, using yield data and stream
Two flow unit peripheral boundaries are portrayed by pressure history using the square boundary model in Ecrin platform Topaze modules
Constraint, including TZ62-1 and TZ62-4H well groups and the rectangle drainage area of TZ621, each boundary parameter is as shown in table 10：
The individual well drainage boundary of table 10 is apart from table
| Pound sign | Border 1 | Border 2 | Border 3 | Border 4 |
| TZ621 | 1240 | 311 | 671 | 233 |
| TZ62-1 | 756 | 286 | 255 | 296 |
| TZ62-4H | 715 | 318 | 505 | 397 |
According to the drainage boundary distance of single well-controlled, single well-controlled draining side in TZ621 seam_cavern type planes can be sketched out
Boundary's distribution map, and then the foundation for numerical well testing model lays a good foundation, eventually through accurately marking off after numerical well testing checking
Unit has been employed and cell distribution region has not been employed, and for the deployment of Encryption Well from now on reliable basis are provided.
The existing pilot production Jing40Kou in 26,62 wellblocks in tower, with reference to creation data and the variation relation of flowing bottomhole pressure (FBHP), each well draining
Area is as shown in table 11.
26 wellblock part well drainage boundary summary sheet in the Well 62 field of Central Tarim of table 11 and tower
Step 3, preserves body characteristicses understanding：
Preserving body characteristicses understanding needs to combine geology, earthquake, bores well logging, well logging, reservoir reconstruction, dynamic monitoring, fluidisation
Many-sided specialty data such as testing carries out comprehensive analysis, and its main contents includes in flow unit the number of Reservoir Body and relative
The oil gas characteristic answered, is follow-up numerical well testing model to reach the purpose for portraying different the flow domain distributions in flow unit
Foundation lays the foundation.
Instance analysis：TZ62-7H
TZ62-7H well locations No. 62 lithology circles in I Slope break belt towers in low raised tower in Tarim Basin central uplift tower
The flat development well of water closed in northern section, spudded on May 6th, 2008, September completion on the 20th, after the Nikkei acid fracturing of October 7 in 2008
Go into operation.
The well employs point 4 sections of acid fracturings and carries out reservoir reconstruction, according to bottom pressure after each section of termination of pumping and accumulative injection liquid measure
Relation learn that the 1st, 4 sections open relatively independent Reservoir Body, the 2nd, 3 sections have pressed off same Reservoir Body.
Double logarithmic curve form is recovered according to pressure, TZ62-7H has different percolation ability regions, and possible cause is periphery
There is other Reservoir Bodies, the upper warp line of Different Slope is presented with reference to the responding curve of well well-test curve later stage, be that multiple Reservoir Bodies are participated in
The feature of feed flow, and the seismic reflection type combination of weak reflection, a weak beading and a strong beading, comprehensive descision are shown on seismic profile
The many set Reservoir Bodies of TZ62-7H controls.
According to TZ62-7H pilot production situations, the long-term band water steady production of the well, water outlet does not constitute impact, water to oil and gas production
For single set Reservoir Body；30 days initial stages average gas-oil ratio 688, crude oil is mixed out with condensate, and oil, gas are probably independent mutually
Reservoir Body, higher with reference to part C1 Gas Logging Values on logging presentation, bottom C1 Gas Logging Values are low, and TZ62-7H has significantly in well logging
Have in three sets of reservoir distributions, and seismic profile and think corresponding three kinds different reflection types (if being followed successively by reflection, weak string from top to bottom
Pearl, strong reflection), comprehensive analysis thinks that three sets of Reservoir Bodies of TZ62-7H are respectively the condensate gas at top (if seismic reflection type is
Reflection), middle water (seismic reflection type is a weak beading), the oil (seismic reflection type is a strong beading) of bottom.
Therefore, adopting well for the oral examination of 26,62 wellblock 40 in tower has carried out preserving body characteristicses understanding, features storage in each unit
The distribution of collective and oil gas characteristic, for the later stage set up numerical well testing model carry out unit checking provide strong foundation, specifically
Analysis result is as shown in table 12.
62,26 wellblock Reservoir Body mark sheet in the tower of table 12
Step 4, numerical well testing model is set up and checking：
Judged based on connected relation, drainage area is portrayed and Reservoir Body signature analysis, with reference to individual well pressure buildup test
Data, sets up numerical well testing model to verify the reliability that flow unit is divided, and reaches the purpose of fine division of flow units.
Numerical well testing checking is carried out to the flow unit of 26,62 wellblock 12 in tower at present, with TZ623-H1, TZ62-11H
Illustrate as a example by verifying with the numerical well testing of TZ62-2 well groups, tri- flow units of TZ623-H2, be analyzed as follows：
(1)TZ623-H1
This well put into pilot production on July 10th, 2012, and 11 days-June 27 June in 2013 carries out pressure buildup test, adopts
Extensive data are pressed with closing well, saphir Well Testing Softwares are substituted into, Numerical Well Test Analysis are carried out.
This |input paramete
The basic parameter table result data of table 13
This well thinks that by analysis single well control unit area is larger, can be divided into by its relative percolation ability internal hypertonic
With hypotonic two regions in periphery, inner region area is about 1.876x105m2, permeability 1.58md, and peripheral hypotonic area's supply area is about
For 2.267x105m2, permeability 0.158md.Numerical well testing fitting effect preferably, illustrates that the division of TZ623-H1 well streams moving cell can
Lean on.
(2) TZ62-2 and TZ62-11H well groups
TZ62-2 with TZ62-11H well groups are one and connect well group, the test data of two mouthfuls of wells is carried out tentatively comparing sieve
Choosing, this well group is analysis well, TZ62-11H well location auxiliary reference wells using TZ62-2 wells.TZ62-2 threw on December 22nd, 2005
Enter pilot production, 2 days-January 23 January in 2009 carries out pressure buildup test, data are recovered using shut-in pressure, with reference to whole pressure
Power, production history data substitute into saphir Well Testing Softwares, carry out whole pressure value well test analysis.
1. this |input paramete
The basic parameter table of table 14
This well group thinks that by analysis control unit area is larger, is divided into three high permeability areas and peripheral two hypotonic areas, single
There is tomography in unit, but tomography is not exclusively closed.High permeability area gross area 3.167x105m2, Area-weighted mean permeability 13md, outward
Hypotonic area's aggregate supply area 4.74x105m2 is enclosed, Area-weighted mean permeability 0.5376md, numerical well testing fitting effect is preferable,
Illustrate that the well group flow unit is divided reliable.
(3) TZ623-H2 wells
TZ623-H2 wells put into pilot production on July 31st, 2012, and 14 days-July 3 June in 2013 carries out pressure and recovers to survey
Examination, using shut-in pressure data are recovered, and with reference to whole pressure, production history data saphir Well Testing Softwares are substituted into, and carry out whole process
Pressure value well test analysis.
1. basic input parameters
The basic parameter table of table 15
This well group thinks that by analysis control unit area is larger, is divided into Liang Ge Relative High Permeabilities area and peripheral hypotonic area.It is high
Ooze area gross area 2.94x105m2, Area-weighted mean permeability 3.2437md, peripheral hypotonic area's aggregate supply area
2.28x105m2, Area-weighted mean permeability 0.2396md, numerical well testing fitting effect preferably, illustrates the well group flow unit
Divide reliable.
26 wellblocks in tower and Well 62 field of Central Tarim institute division of flow units are set up by numerical well testing model and verified, such as table 16
Shown, dividing elements are reliable.
The numerical well testing model of table 16
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (3)
1. a kind of carbonate rock horizontal well flow unit division methods, it is characterised in that the carbonate rock horizontal well flow unit
Division methods are comprised the following steps：
The adjacent Liang Koujing of step one, selection, interwell communication relation judges；
Step 2, in horizontal well under enter pressure gauge, measurement pressure recovers data；After obtaining pressure recovery data, adopt and be not related to
Well well-logging method, chooses the boundary model being consistent with single horizontal well or the connection construction location of well group, reservoir distribution scope
Calculate drainage area；
Step 3, with reference to Seismic reflection character and reservoir distribution scope, single or multiple Reservoir Bodies are determined in drainage area
Particular location；According to single horizontal well or connection well group different times PVT sampling data and oil gas aquation certification of registered capital material, analysis
The property of oil gas aqueous fluid situation over time, determines the fluid properties of each Reservoir Body, determines single horizontal well or company
The Reservoir Body number of drifting group control；By the single horizontal well of real-time monitoring or the production process of connection well group, analyzing oil and gas
With the production decline law of time, judge there are multiple Reservoir Bodies to participate in supplying if oil gas is in double exponential decreases with the production decline law of time
Liquid, judges it is that single Reservoir Body participates in feed flow if oil gas successively decreases with the production decline law of time in single index；
Step 4, recover data from pressure in second step, with numerical well testing module in Saphir softwares, set up following single
The numerical well testing model of horizontal well or connection well group, numerical well testing model includes：Each well whole process pressure, yield data are loaded,
Using drainage area as peripheral boundary, in drainage area each Reservoir Body as independent seepage flow variation zone, and with thickness in work area
Give assignment with the weighted average of porosity；Using PEBI grids and numerical technology, respectively preserve in debugging drainage area
The numerical value of body mobility ratio and dispersion ratio, until the pressure matched curve of built numerical well testing model is high with measured curve similarity,
Coefficient correlation reaches design requirement, and the permeability magnitude of each region interpretation meets geologic feature, then judge single horizontal well or
The flow unit boundary demarcation of person's connection well group is reasonable；Otherwise pressure matched curve and the measured curve of built numerical well testing model
Similarity is low, and coefficient correlation is not reaching to design requirement, then need to carry out the work again, until the pressure of built numerical well testing model
Till matched curve reaches design requirement with the coefficient correlation of measured curve.
2. carbonate rock horizontal well flow unit division methods as claimed in claim 1, it is characterised in that in step one,
The method that interwell communication relation judges includes two methods：
Method one, does the connectedness that interference test test is judged between adjacent well, and in interference test test, perturbed well sends excitement
Signal, judges two mouthfuls of well connections if the signal that perturbed well sends is monitored in inspection well, otherwise then judges not connect；Method
Two, the connectedness that tracer test is judged between adjacent well is done, tracer is added in water injection well, if detected in inspection well
The tracer of addition then judges two mouthfuls of well connections, otherwise then judges not connect.
3. carbonate rock horizontal well flow unit division methods as claimed in claim 2, it is characterised in that if it is determined that two mouthfuls
Well is disconnected, then divide single horizontal well flow unit border, otherwise then divides the flow unit border of connection well group.
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