Products

SWFL series tool totally has four-generation products, such as DSC mono-conductor multi-function waterflow logging tool, SWFL-A, SWFL-B and SWFL-C.. It consists of Neutron Oxygen Activation Logging Tool, Neutron Lifetime Logging Tool, Natural Gamma Ray Logging Tool, Casing Collar Magnetic Locator and Temperature/Pressure Tool. It can measure parameters such as well temperature, pressure, natural gamma ray, CCL, near/far capture cross section Σ and waterflow under various conditions in a single logging run. It can complete common water injection rate test, tool integrity test and locate channeling outside of the tube in the water injection well. It can also evaluate the residual oil and search for the gas layer in the withdrawal well by measuring the parameters of thermal neutron capture section as well as near & far count ratio etc.

Benefits and Features

- one tool, multi-applications, it can both measure water-injection section, check tool integrity in the water injection well, and find water, evaluate water-flooded level & residual oil distribution in the withdrawal well.

- no any radioactive tracer is used, so there is no contamination, sedimentation and pollution problems comparing to the traditional isotope tracing flowmeter, and measurement error caused by these problems is also eliminated.

- non-contact measuring the annulus space of inside & outside of the oil tube and water flow of casing outside in the oil tube, and measure the upward flow, downward flow and two/more unidirectional water flow simultaneously.

- adopt neutron generator target and stabilized voltage technology for promising the stability of neutron yield , and improve the accuracy of logging data.

Specifications：

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- Max. Pressure: 80 MPa(DSC、SWFL-A、SWFL-B) /100MPa(SWFL-C)  

- Max. Temperature: 135℃(DSC、SWFL-A) /150℃(SWFL-B)/175℃(SWFL-C)

- Max. Outside diameter: 43mm(DSC)/38mm(SWFL-A、SWFL-B)/41mm(SWFL-C)

- Length: less than or equal to 5700 mm without extended acquisition cartridge

- Natural GR tool

    Measurement range: 0--5000cps; Allowance: ±7%

- Pressure tool

    Measurement range: 0～80 MPa; Allowance:±1%

- Temperature tool

    Measurement range: 0--135℃/150℃/175℃；Allowance:±1%

- CCL

Measurement range: Qualitatively indicate oil/CCL

- Neutron oxygen activation logging tool

Measurement range: 5 m3/d～20 m3/d，Allowance ≤± 8%

20 m3/d～400 m3/d，Allowance ≤±5%

400 m3/d～1500m3/d，Allowance ≤±10%

- Neutron lifetime logging tool

Measurement range:7. 6c.u. --91 c.u.; Allowance ≤±3%

     The graph shows the example of finding out the leakage of packer on the offshore oilfield.