AISI 304 O.D 219mm Johnson Type Downhole Slotted Tube With 1.0mm Slot
Johnson Type Downhole Slotted Tube Description:
Johnson Type Downhole Slotted Tube is made by winding cold-rolled wire, approximately triangular in cross section, around a circular array of the longitudinal rods. The wire is attached to the rods by welding, producing rigid one-piece units having high strength characteristics at minimum weights.There is a fixed value slot between each v wire, and the continuous slot, designed to provide maximum open are to reduce entrance velocity, increase hydraulic efficiency and promote more effective development.
Johnson Type Downhole Slotted Tube Specification:
| Name | Johnson Type Downhole Slotted Tube |
| Material | Stainless steel |
| Grade | 304 |
| O.D | 219 mm |
| Size | 8-5/8" |
| Slot size | 1.0mm |
| Length | 3 m |
| End connection | Welded rings |
| Wire size | 1.5*2mm Vee wire, 1.5mm is the width and 2mm is the height |
| Support rod | 2*3mm Vee wire, 2mm is the width and 3mm is the height |
| Wire shape | Vee-shaped |
Johnson Type Downhole Slotted Tube Regular Specifications:
| SIZE (INCH) | O.D (MM) | SLOT (MM) | LENGTH (M) | COLLAPSE STRENGTH (BAR) | TENSILE WEIGHT (TON) | WRAP WIRE(WIDTH*HEIGHT) (MM) | RODS (MM) |
| 3-1/2 | 88.9 | 1.0 | 3 | ＞22 | 10.2 | 2.3*3.5 | 3.8MM/22 |
| 4-1/2 | 114.3 | 1.0 | 3 | ＞28 | 11.5 | 2.3*3.5 | 3.8MM/22 |
| 6-5/8 | 168.3 | 0.75 | 5.8 | ＞40 | 12.8 | 2.3*3.5 | 3.8MM/32 |
| 6-5/8 | 168.3 | 1.0 | 5.8 | ＞33 | 12.8 | 2.3*3.5 | 3.8MM/32 |
| 6-5/8 | 168.3 | 0.63 | 5.8 | ＞83 | 45 | 3.2*6.0 | 6.0MM*32 |
| 8-5/8 | 219.1 | 1.0 | 5.8 | ＞34 | 21.9 | 2.3*3.5 | 3.8MM/48 |
| 8-5/8 | 219.1 | 1.0 | 5.8 | ＞50 | 38.2 | 3.0*5.0 | 4.0MM/48 |
| 8-5/8 | 219.1 | 1.0 | 5.8 | ＞60 | 46 | 3.2*6.0 | 5.0MM/48 |
| 10-3/4 | 273.1 | 0.75 | 5.8 | ＞50 | 32.9 | 2.3*3.5 | 4.9MM/55 |
| 10-3/4 | 273.1 | 1.0 | 5.8 | ＞60 | 39.5 | 3.0*5.0 | 4.9MM/55 |
| 10-3/4 | 273.1 | 1.0 | 5.8 | ＞100 | 48 | 3.2*6.0 | 5.0MM/55 |
| 12-3/4 | 323.9 | 1.0 | 5.8 | ＞120 | 37.2 | 3.0*5.0 | 4.0MM/50 |
| 14 | 355.6 | 1.0 | 3 | ＞80 | 37.8 | 3.0*5.0 | 4.0MM/59 |
Johnson Type Downhole Slotted Tube Characteristic:
- Screens with high open area are more suitable for the construction of high-quality water wells, oil wells and gas wells.
- Low cost operation Screens with high open area shall favor groundwater infiltration. Abundant water shall reduce the water level’s down, thus to save energy consumption.
- Reduce the abrasion of the pump
- Under the same condition, high open area can make the speed of groundwater’s entering into the screen much slower than any other filtration apparatus, which will avoid sand’s entering into screen because of high pressure, thus reduce the abrasion of the pump.
- Extend the life span of wells
- Comparatively, groundwater’s entering into screen with higher open area is much easier than the entering into lower open area screen. The slow water flow shall extend the life span of wells.
Johnson Type Downhole Slotted Tube Application:
1. Heavy oil, sand oil, light oil, SAGD, CBM, bitumen, thermal
2. Water injection, bi-modal sand, carbonates, thin pay
3. Horizontal, vertical , deviated oil and gas and water wells
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