Introduction

CMS is one type of shrouded metal mesh screen. It is a patent product of COSL. The unique structure jacket can hold sand and maintain good flow-throng capability. CMS can be employed in most reservoirs which needed sand control.

Two layers 316L stainless steel filter media, high reliability and good anti-damaging performance.

Drainage layer between the filter media layers improves the flow properties.

High permeability and porosity, large open area.

Easy to run in the long horizontal wells.

Anti-acid and alkaline, anti-high temperature, long service life.

Simple construction, easy for operation, benefits to lower the completion costs, and increase the rate of success in installation.

Remaining sand control performance even the radial deformation up to 40%.

Aperture size of CMS screen usually ranges from 60μm to 500μm.

Applications

Reservoir with d10/d95≤10 & d40/d90≤5 & sub44μm≤5%.

Stand-alone, open hole especially, gravel pack and frac-pack application also.

High production rate well with electric submerged pump.

High temperature high pressure well and corrosive well.

Overhaul completion and thermal stimulation wells.

Specifications

Base pipe		ID (mm)	Max. OD (mm)	Liner density (±2kg/m)	Effective open area¹	Min. collapse	Min. burst pressure	Min. tensile strength
Size(in)	Weight (lb/ft)	ID (mm)	Max. OD (mm)	Liner density (±2kg/m)	Effective open area¹	Min. collapse	Min. burst pressure	Min. tensile strength
2-3/8	4.6	12	80	835	62	360	360	371.1
2-7/8	6.4	15	94	897	76	440	440	516.1
3-1/2	9.2	30	111	915	90	580	580	737.7
2-3/8	4.6	12	80	835	62	360	360	371.1
2-7/8	6.4	15	94	897	76	440	440	516.1
3-1/2	9.2	30	111	915	90	580	580	737.7

Notes：

The effective open ratio range:10%~30%, which depends on the aperture size of filter media. The example is data of 120μm filter media with open ratio of 15%.

The recommended value can be obtained by multiplying by a engineering safety factor 0.6.

Screen body only (N80 grade); excluding threaded connections.

Other specification products are available.

Introduction

CMS-Slim is one type of shrouded metal mesh screen which has smaller OD than CMS by strengthened filter media. CMS-Slim can be employed in wells where restricted ID exist and special OD tool is preferred.

One layer strengthened 316L stainless steel filter media, high reliability and good anti- damaging performance.

Smaller OD, easy for operation, benefits to lower the completion costs, and increase the rate of success in installation.

High permeability and porosity, large open area.

Easy to run in the long horizontal wells.

Anti-acid and alkaline, anti-high temperature, long service life.

Remaining sand control performance even the radial deformation up to 40%.

Aperture size ranges from 60μm to 500μm.

Applications

Reservoir with d10/d95≤10 & d40/d90≤5 & sub 44μm≤5%;

Wells where special requirements on screen OD

Stand alone, open hole especially, gravel pack and frac pack application also;

High production rate well with electric submerged pump; water producer;

High temperature high pressure well and corrosive well;

Overhaul completion and thermal stimulation wells;

Specifications

Base pipe		ID (mm)	Max. OD	Liner density	Effective open	Min. collapse	Min. burst	Min. tensile strength³
Size(in)	Weight	ID (mm)	Max. OD	Liner density	Effective open	Min. collapse	Min. burst	Min. tensile strength³
2-3/8	4.6	50.6	75	10.5	330	28	22.2	371.1
2-7/8	6.4	62.0	88	13	391	28	18.9	516.1
3-1/2	9.2	76.0	105	18	467	28	16.0	737.7
4	9.5	90.1	118	19	528	28	14.2	763
4-1/2	11.6	101.6	130	22	584	28	12.9	950.3
4-1/2	12.6	100.5	130	24	584	28	12.9	1025.1
5	15	112.0	142	27	646	28	11.7	1245.8
5-1/2	17	124.3	156	31	707	28	10.7	1413.1
6-5/8	24	150.4	187	42	839	28	9.1	1975.4
7	26	159.4	196	46	886	28	8.6	2149.8

Notes

The effective open ratio range:10%~30%, which depends on the aperture size of filter media. The example is data of 120μm filter media with open ratio of 15%.

The recommended value can be obtained by multiplying by a engineering safety factor 0.6.

Screen body only (N80 grade); excluding threaded connections.

Other specification products are available.

Introduction

CDWS is an acronym for COSL Dual-filter Wire-wrap Screen. It is a combination of CMS and WWS. The jacket of CDWS consists of wire-wrapped jacket and shrouded metal-mesh jacket. The wire-wrapped jacket may be outside of the shrouded metal-mesh jacket or vice versa, which depends on completion design and producing requirement. CDWS is a special product for thermal stimulation well (steam huff-puff/injection/production well), high rate well, high temperature high pressure well, and other harsh conditions.

Wire-wrapped jacket and shrouded metal-mesh jacket provide double filtration systems, longer service life;

316L stainless steel filter media, high reliability and good anti-damaging performance.

Drainage layer between the filter media layers improves the flow properties.

High permeability and porosity, large open area.

Easy for operation, benefits to lower the construction expense, and increase the rate of success in installation.

Remaining sand control performance even the radial deformation up to 40%.

Aperture size ranges from 60μm to 500μm.

Applications

Stand alone if reservoir with d10/d95≤10 & d40/d90≤5 & sub 44μm≤5%;

Coupled with gravel pack/frac pack, if d10/d95>10 or d40/d90>5 or sub 44μm>5%;

Cased hole or open hole, coupled with gravel pack/frac pack will gain a better performance.

High temperature high pressure well, thermal stimulation wells and corrosive well;

Other harsh conditions.

Specifications

Base pipe		ID (mm)	Max. OD (mm)	Liner density (±2kg/m)	Effective open area¹ (cm²/m)	Min. collapse pressure² (MPa)	Min. burst pressure²	Min. tensile strength³ (kN)
Size(in)	Weight (lb/ft)	ID (mm)	Max. OD (mm)	Liner density (±2kg/m)	Effective open area¹ (cm²/m)	Min. collapse pressure² (MPa)	Min. burst pressure²	Min. tensile strength³ (kN)
2-3/8	4.6	50.6	90	16.5	330	36.5	22.2	371.1
2-7/8	6.4	62.0	103	21	391	36.5	18.9	516.1
3-1/2	9.2	76.0	119	26	467	36.5	16.0	737.7
4	9.5	90.1	132	28	528	36.5	14.2	763
4-1/2	11.6	101.6	144	31.5	584	36.5	12.9	950.3
4-1/2	12.6	100.5	144	33	584	36.5	12.9	1025.1
5	15	112.0	157	37.5	646	36.5	11.7	1245.8
5-1/2	17	124.3	170	42	707	36.5	10.7	1413.1
6-5/8	24	150.4	198	54	839	36.5	9.1	1975.4
7	26	159.4	208	60	886	36.5	8.6	2149.8

Notes

The effective open ratio range:10%~30%, which depends on the aperture size of filter media. The example is data of 120μm filter media with open ratio of 15%.

The recommended value can be obtained by multiplying by a engineering safety factor 0.6.

Screen body only (N80 grade); excluding threaded connections.

Other specification products are available.

Introduction

Wire-Wrapped screen is a traditional sand control screen. Wire-Wrapped jacket and base pipe are main components. It is widely used in both onshore and offshore oil & gas wells. The longevity and sand control performance are very well if combine with gravel pack.

“T” shape slot, never plugging in the slot;

Anticorrosion, long service life;

All welded structure ,high mechanical strength;

Minimum slot opening: 0.006 inch;

High open ratio, up to 15%;

Gravel Pack & Frac Pack are mature techniques;

Good adaptability and sand control performance.

Applications

Thickness of pay zone lager than 3m, both single layer and multi-layer;

Stand alone, if d10/d95<10 & d40/d90<3 & sub 44μm<2%;

Coupled with gravel pack/frac pack, if d10/d95>10 or d40/d90>5 or sub 44μm>5%;

High production rate oil &gas well & water source well with middle or low reservoir pressure;

Thermal production well, heavy oil well and corrosive well;

Specifications

API base		Screen ID (mm)	Screen OD (mm)	Perforation OD (mm)	Perforating density (pore/m)	Rod Qty.	Screen weight (kg/m)	Min. tensile(kN)
Size(in)	Weight (lb/ft)	Screen ID (mm)	Screen OD (mm)	Perforation OD (mm)	Perforating density (pore/m)	Rod Qty.	Screen weight (kg/m)	Min. tensile(kN)
2-3/8	4.6	50.6	78.0	10	160	24	11.3	371.1
2-7/8	6.4	62.0	91.0	10	200	26	14.4	516.1
3-1/2	9.2	76.0	107.0	10	240	28	19.0	737.7
4	9.5	90.1	119.5	10	280	32	20.3	763
4-1/2	11.6	101.6	132.5	10	280	34	23.6	950.3
4-1/2	12.6	100.5	132.5	10	280	34	25.1	1025.1
5	15	112.0	145.0	10	320	38	29.0	1245.8
5-1/2	17	124.3	158.0	10	360	44	32.6	1413.1
6-5/8	24	150.4	186.0	10	440	48	43.6	1975.4
7	26	159.4	196.0	10	440	54	47	2149.8

Notes

acket OD only. The OD of centralizer fins depends on the outer casing ID.

Screen body only (N80 grade); excluding threaded connections.；

Anti erosion type products are available on request.

Introduction

Punched screen consists of stainless punched jacket and base pipe. Punched screen is an idea substitute of slotted liner due to better anticorrosion performance and relative small OD.

Optimized design for perforation on base pipe, high mechanical properties;

Easy RIH due to relative small OD. The OD of jacket is no larger than that of coupling.

Slot width: 0.15-2.0mm

High precision of slot, tolerance of the slot width is ±0.05mm;

Good performance of anticorrosion, long service life;

Open ratio: 4~8%;

Side slot, good anti-plugging ability.

Applications

Single pay zone, multi-layer with almost same pressure & lithology, commingled producing multi-layer well; no limitation of thickness of pay zone;

Cased hole and Open hole completion;

Loose reservoir with middle & coarse sand;

Oil & gas well or water source well with middle or low production rate;

Thermal production well, heavy oil well and corrosive well;。

Specifications

Base pipe		Screen ID	Screen OD	Dia. Of Perforation	Perforating Density	Weight	Min. tensile strength¹
size(in)	weight (lb/ft)	Screen ID	Screen OD	Dia. Of Perforation	Perforating Density	Weight	Min. tensile strength¹
2-3/8	4.6	50.6	70.3	10	160	8.5	371.1
2-7/8	6.4	62.0	83	10	200	11.5	516.1
3-1/2	9.2	76.0	98.9	10	240	16.1	737.7
4	9.5	90.1	111.6	10	280	16.8	763
4-1/2	11.6	101.6	124.3	10	280	20.4	950.3
4-1/2	12.6	100.5	124.3	10	280	21.9	1025.1
5	15	112.0	137	10	320	25.7	1245.8
5-1/2	17	124.3	149.7	10	360	28.9	1413.1
6-5/8	24	150.4	178.3	10	440	40.1	1975.4
7	26	159.4	187.8	10	440	43.3	2149.8

Notes

Screen body only (N80 grade); excluding threaded connections.

Other specification products are available.

Introduction

Slotted liner is a traditional mechanical sand control device. We cut the slots on the tubing or casing by high energy laser. We optimize the slot length, distribution and slot density to ensure maximum open ratio while maintaining the required strength and slot width.

Slots and base pipe are integrate, large ID/OD ratio;

High mechanical strength, high flexibility to allow adequate bending;

Both supporting well bore and sand control functions;

Low cost in manufacture and installations;

Minimum slot width: 0.15mm;

Open ratio: 1%-6%;

Optimized slot distribution;

With corrosion resistance if special pipes (such as super 13Cr) are employed.

Applications

Single pay zone, multi-layer with almost same pressure & lithology, commingled producing multi-layer well; thickness of pay zone no larger than 30m;

Cased hole and open hole completion;

Loose reservoir with middle & coarse sand;

Oil & gas well or water source well with low production rate;

Specifications

API Base pipe		Screen ID	Screen OD	Slot width (mm)	Slot length (mm)	Min. tensile strength¹
Size(in)	Weigh (lb/ft)	Screen ID	Screen OD	Slot width (mm)	Slot length (mm)	Min. tensile strength¹
2-3/8	4.6	50.6	60.3	0.15-2.0	80	371.1
2-7/8	6.4	62.0	73.0	0.15-2.0	80	516.1
3-1/2	9.2	76.0	88.9	0.15-2.0	80	737.7
4	9.5	90.1	101.6	0.15-2.0	80	763
4-1/2	11.6	100.5	114.3	0.15-2.0	80	1025.1
5	15	112.0	127.0	0.15-2.0	80	1245.8
5-1/2	17	124.3	139.7	0.15-2.0	80	1413.1
6-5/8	24	150.4	168.3	0.15-2.0	80	1975.4
7	26	159.4	177.8	0.15-2.0	80	2149.8
7	29	157.1	177.8	0.15-2.0	80	2405.6