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Smart Water Injection Systems

Smart Water Injection Systems

Smart Water Injection Systems SITAN ZCF - 100 smart injection system can realize accurate separated layer water injection for water well. SITAN ZCF-100 smart injection system can perform measuring and regulating fluid flow automatically without human intervention. SITAN ZCF-100 smart water...

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Product Details

Smart Water Injection Systems

SITAN ZCF - 100 smart injection system can realize accurate separated layer water injection for water well. SITAN ZCF-100 smart injection system can perform measuring and regulating fluid flow automatically without human intervention.

SITAN ZCF-100 smart water injection system consists of a surface controller and downhole smart distribution string.

The downhole smart distribution string is composed of a downhole measuring-regulating smart distributor (including a main body, a measuring-regulating adjustable nozzle, a controlling circuit, a communication module, a sealing test pressure gauge, a flowmeter, a temperature meter 0, a packer (through casing), a ball seat, cables and tubing, etc. The surface controller includes an explosion-proof equipment and applicable for offshore oil field.

 

Features

1. SITAN ZCF - 100 smart injection system achieves integration of downhole tools, single tool can permanently monitor downhole temperature, flow, water injection pressure and formation pressure, transmits them to ground in real time, makes testing operation synchronize data acquisition and data analysis, decides at time, improves application efficiency of test.

2. SITAN ZCF - 100 smart injection system achieves long monitoring, has the function of accumulating water injection flow, possesses practical guide meaning for analyzing water absorption of each layer.

3. Automatic intelligent control of testing and regulation realizes elaborate separate injection, downhole separate injection system of intelligent testing and regulation adopts automatic control algorithm to achieve automatic regulation of working state of water nozzle of downhole intelligent water distributor when unmanned, effectively reduces working load, enhances qualification rare and accuracy of water injection.

4. SITAN ZCF - 100 smart injection system uses pressure balanced technology to avoid the downhole high pressure on switch valve.

5. SITAN ZCF - 100 smart injection system can realize regulation of working state of water nozzle of downhole intelligent water distributor in real time remotely without operation on site.

6. SITAN ZCF - 100 smart injection system achieves automatic sealing examination, closing layered water nozzle can just examine the sealing of packer on the layer because water distributor is provided with pressure gauge inside and outside pipe. Only one pipe injection construction is needed without manual intervention and measurement on later stage, saving a large number of manpower and material source.


Specification

Downhole distributor

specification

OD        

114mm(4.5in)

Internal diameter

40mm/46mm(1.57in/1.81in)

Length

1.7m

Maximum operating temperature  

150℃

Maximum operating pressure      

80MPa(11600psi)

Effective life time

≥2 years

Pressure measuring range

0~60MPa(0~9000PSI), accuracy:0.1%FS

Pressure measuring accuracy

0.1%FS

Temperature measuring range

0-150℃

Temperature measuring accuracy

±0.5℃

Single layer flow measuring range

(20~190)bbl/d,  (100~1000)bbl/d, 

(250~2500)bbl/d   (can be customizable)

Single layer flow measuring accuracy

2%FS

Single layer flow adjustment range

0~30m3/d(0~183bbl/d),

0~150m3/d(0~915bbl/d),

Maximum transmission distance

5000m

Maximum   adjustable pressure difference

40MPa(5800psi)

Max layered number

No limit

Surface explosion-proof controller specification

Operating temperature (-40~85)
Supply voltage     220V AC/50Hz110V AC/60Hz
Anti-hazard Classification     Exd II BT4
Level of Protection IP55


Working principle drawing

image.png


Case study

Some wireline digital distributor work situation (in 2015,2016)


Well no.

Work time

Layer number


Well no.

Work time

Layer number

Daqing oilfield

X8-4-139

2015.09.30

5

Huabei oilfield

(Neimeng)

31-87

2015.09.25

3

X9-1-140

2015.10.01

5

10-40

2015.12.08

3

35-44

2016.05.10

3

29-112

2015.11.02

2

137-355

2016.08.17

5

29-115

2015.11.10

3

X10-4-B365

2016.08.22

7

29-89

2015.11.15

4

X10-4-W356

2016.09.26

5

29-82

2015.11.18

3

X10-4-B345

2016.10.17

6

34-64

2015.11.05

4

Huabei oilfield

(Renqiu)

63-177

2016.10

3

19-3

2015.10.08

3

63-194

2016.10

3

10-24

2016.07.28

3

63-46

2016.11

2

31-5

2016.09.21

3

48-118

2016.11

2

19-6

2016.11.20

4

309

2016.11

3

18-16

2016.10.23

3

Shengli oil field

GD1-19N13

2016.09.06

2

22-132

2016.10.17

2

GD2-22-24

2016.09.15

2

29-132

2016.10.07

3

H50-27

2016.11.24

2

29-85

2016.11.25

3

Bohai oilfiled

庄海4-H4

2016.01.10

2





68-22

2016.06.13

2

Qinghai oilfield

315

2016.05.01

3

板新43-1

2016.08.20

3

S5-2

2016.09.15

3

张海29-32

2016.10.01

2





庄海8ES-L6

2016.10.12

2






According to the field well test results of wells above mentioned, the automatic measurement and monitoring of the dispensing instrument (cable intelligent water dispenser) can fully meet the user's requirements, the measured data shows that after the nozzle adjustment, the well water injection volume maintained within the required amount of error within the distribution, with good results.


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