Perforation & Completion Tools

Perforation Gun ( Body & Shell )

Gun Diameter:

Perforating guns are available in various diameters, such as 3-3/8″, 4-1/2″, and 7″.

Shot Density:

The number of perforations per unit length (e.g., per meter) can vary depending on the application.

Phase Angle:

The angle at which the charges are positioned around the gun circumference can be specified.

Material:

Steel and other materials like stainless steel, copper-nickel, can be used for specific applications,up to 170ksi.

Standard Compliance:

Perforating gun pipes may conform to standards  ASTM A519, API SPEC 5CT, or EN standards.

 

Sliding Sleeve

Borehole Size.: 6 ” 8 1/2”

Tail Pipe Size and normal weight: 4-1/2“x13.5lb/ft  5-1/2”x23lb/ft

Differential Pressure: 35Mpa、52.5Mpa.

Temperature Resistance: 150 ℃

Material: P110

Max O.D.:5.63in, 7.13in

Max I.D.:3.75in 4.7in

 

Landing Nipple

Type.: No-go Landing Nipple, Selective Landing Nipple

Tube Size: 2 3/8” 2 7/8” 3 1/2” 4 1/2” 51/2”

Seal Hole Diameter: 1.875” 2.313” 2.813”2.75” 3.813” 4.562”

NO-GO I.D.: 1.791” 2.205” 2.666” 2.635” 3.725” 4.455”

Lock Mandrel I.D.: 1” 1.38” 1.75” 2.62” 3.12”

 

Screen Liner

Oil screen liner is a key sand control equipment used in oil extraction to prevent sand particles from entering the wellbore. Its material is mostly J55 or N80 steel grade oil casing, which adapts to different geological environments through differences in steel grade and structure. The core function is to filter sand particles and ensure oil recovery efficiency. The main types include slotted screen pipes, wire wound screen pipes, composite screen pipes, etc. The technical parameters cover an outer diameter of 50-500mm and a seam width of 0.10-4mm, suitable for oil wells with sand particle size greater than 0.3mm.

 

The early wire wrapped sieve tube used trapezoidal wire welding technology, with a gap accuracy of up to 0.05mm and self-cleaning and anti blocking characteristics. However, it is prone to deformation of the gap due to collision during horizontal underground wells. With the advancement of technology, slotted screen pipes have gradually become mainstream due to their advantages of integrated pipe seam design, strong compression resistance, and low cost, especially suitable for horizontal wells and high sand reservoirs. Laser cutting technology further improves seam accuracy and processing efficiency, promoting the iteration of sieve tubes from traditional wire winding to high-performance slotted structures. At present, sand control technology mostly adopts a composite scheme of screen tube and gravel filling, forming a multi-stage filtration barrier.

Types of petroleum sieve tubes

1. Slotted sieve tube
2. Drilling screen pipe
3. Wire wrapped sieve tube
4. Bridge type sieve tube
5. Composite sieve tube

 

Characteristics of Petroleum Screen Liner/Slotted Casing

1. The petroleum sieve tube is processed using J55 or N80 petroleum casing body, which has high strength and is not easily deformed
2. The edge perpendicularity of the cutting seam is good, the cutting edge is smooth, without burrs, and the cutting seam is uniform.
3. The flow area is large, with 300 slots/1.5m for the 27/8 “sieve tube, and a flow area of 72 per cubic centimeter, which is 2.4 times larger than the flow area of the same specification tubing. Beneficial for liquid flow.
4. Its superiority is more evident when used in inclined and horizontal wells.
5. The overall anti-corrosion treatment forms a dense protective layer on the surface of the screen tube, improving its corrosion resistance and wear resistance, which can effectively extend its underground working life.
6. Suitable for sand control in sand wells with sand particle size greater than 0.3mm.
7. Easy to operate, convenient to use, large inner diameter, and convenient for pipe string configuration.

 

Main technical parameters of petroleum slotted casing:

Pipe type: oil casing, oil tubing;

Pipe length (single piece): ≤ 15m;

Outer diameter of pipe: 50-500mm (length ≤ 15m)

Wall thickness: ≤ 20mm;

Seam width: (0.10-4) mm ± 0.03mm;

Number of seams: arbitrary;

Fabric seam types: parallel, staggered, spiral;

Axis seam distance: arbitrary.

 

The current application status of laser cutting of petroleum screen liner:

Screen liner is often used for completion or sand control in oil production and the most commonly used type is wire wrapped screen liner. Manufacturing method of this liner is to wrap a certain section of steel wire around a metal lining tube evenly distributed on the surrounding tubes or openings and weld it firmly, leaving a certain gap as the sieve holes. Although this manufacturing method has been widely used by many manufacturers in China, there are some problems with this type of screen pipe when going down the well, especially when strong pressure passes through the curved section of a highly inclined or horizontal well, it inevitably collides, squeezes, and rubs against the wellbore or casing, which can easily cause wire breakage, damage to the screen pipe, or deformation of the gaps, resulting in a decrease or failure of the completion quality and sand control effect. In response to this drawback of the wire wrapped screen pipe, a slotted screen pipe with integrated pipe and seam has emerged. Due to its superior performance and low price, the slotted tube has been highly valued and widely adopted by major oil fields since its appearance. Slotted pipes provide material conditions for the development of horizontal wells and lateral drilling, as well as the oil extraction of high sand reservoirs.