DOTS provide a wide range of products and services designed to maximize well production, completion tools and accessories, also OEM tools with cutting-edge technology and reliable quality.
DOTS Cross overs is a short tubular part with a ‘Box-Pin’ thread configuration which is used to connect two tubular parts with the same or different thread types and sizes. This also can be referred to as an “X-over”.
- Extends the life of production tubing and completion equipment by minimizing the effect of internal and external erosion caused by turbulent flow.
- Installation is above and below of tool which has ID restrictions for flow e.g. small diameter nipple profiles, expansion joints, safety valves, gauges and gas lift mandrels.
- Connection and body performance exceed or match the production tubing.
- Wall thickness greater than tubing.
- Manufactured with a variety of different thread types (API/Proprietary) and thread Sizes.
- Complies with API 5CT.
- Lengths range from 1ft to 3 ft long.
- Reliable and easy installation
- sizes range from 2 3/8” to 7 5/8”.
- Standard or Heavy Wall Weight (PPF)
- It can be made of different thread types – from API threads to various proprietary threads (Premium Threads).
- Standard service and/or CO2 service and/or Sour service based on requested metallurgy.
- Generic Material Grades: J-55, N-80, L-80, P-110, 13-CR, 1-CR
Pup Joints are used to adjust the height of full-length tubing or casing strings. They are also used to adjust the depth of downhole tools.
- Used as an integral member of the tubing string.
- Used to space out the distance between Tubing and Casing components.
- Comes with a variety of different thread types (API/Proprietary) and Thread size combinations.
- Important to note that upset OD may not be present in some pup joints depending on thread type.
- Complies with API 5CT.
- Reliable and proven
- Various sizes, different threading & different materials are available. OD will vary with tubing weight and thread type
- OD (inch)2-3/8, 2-7/8, 3-1/2, 4, 4-1/2 inch
- ID (inch)041 to 3.640 inch
- Weight (PPF)4 to 19.20 PPF
- Length (ft)2, 3, 4,6,8,10,12 FT
- Connection type as per requirement
DOTS Blast Joints are thick-walled tubing joints placed adjacent to the good perforations. They provide an erosion allowance from the high velocity jetting action at the perforations that also may carry abrasive debris from the good formation.
The blast joints are available in 10- or 20-feet lengths.
The Blast Joints are used to prevent the production string from being damaged by flowing oil and gas erosion.
It is often used in the double/multi-string or single-string completion when the pipe column is facing the part of the perforation section.
It is commonly installed as part of the tubing string and is placed in opposite sections of the good bore where production inflow will take place.
- Extends life of production tubing and completion equipment by minimizing the effect of internal and external erosion caused by turbulent flow and jetting of fluid at the perforation area.
- Available in a large range of sizes and lengths.
- Manufactured with a variety of different thread types (API/Proprietary) and thread Sizes.
- Complies with API 5CT.
- Reliable and consistent.
- Thread Sizes Available at the customer’s request
- Services H2S/CO2/Standard/Sour
- Material Grades Available at the customer’s request
- Lengths 3’ and 6’
Seal Bore Extension enables the longer sealing area or extracting of sealing area.
- Extend the polished surface below the packer.
- Typically have bottom packer threads with O-rings and go on the end of a packer. They maintain the ID and OD of packers.
- Customizable & reliable
- Thread Sizes Available at the customer’s request
- Services H2S/CO2/Standard/Sour
- Material Grades Available at the customer’s request
- Length 8/20/24-ft increments
Mill-Out Extension is a tubular product which resembles pup joints/pup joint extensions and is not actually “milled” as its name implies.
They have an ID which is larger than that of its mating packer bore ID that it will be used with.
- Larger ID allows for collet on packer milling/retrieving tool to latch into place.
- Allows movement of milling/retrieving tool as it moves downward during the milling process of the packer.
- The appropriate length of the Mill-Out extension ensures no other components below the packer come in contact with the milling/retrieving tool.
- Comes with a variety of different thread types (API/Proprietary) and Thread size combinations (Pin x Pin / Box x Box / Box Pin)
- Each Mill-Out Extension has a larger ID than the mating Packer bore ID.
- Easy to install & customized design
- Typically, the Mill-Out Extension ID and OD surface finish are not critical.
- The Mill-Out Extensions can be set up as pup joint/pup joint extensions if the design requirement meets the API Tubing/Casing nominal IDs.
- ID is required to be 3/8” (preferred), or more, larger than packer bore ID.
- The preferred Mill-Out extension length is 8’ (96”). Shorter lengths are also available but are required to be verified for sufficient packer retrieving/milling tool length.
- It can be made of different thread types ranging from API threads to various proprietary threads (Premium Threads).
A relatively short, heavy-walled completion component is installed in areas where turbulence is anticipated.
Flow Couplings are heavy wall connectors used in tubing strings and are designed to minimize the effect of internal erosive action caused by production fluids. Flow couplings are located just above and below flow control equipment where turbulent flow problems are likely to occur.
- Extends the life of production tubing and completion equipment by minimizing the effect of internal and external erosion caused by turbulent flow.
- Installation is above and below the tool, which has ID restrictions for flow e.g. small diameter nipple profiles, expansion joints, safety valves, gauges and gas lift mandrels.
- Complies with API 5CT.
- Manufactured with a variety of different thread types (API/Proprietary) and thread Sizes.
- Connection and body performance exceed or match the production tubing.
- Flow Couplings are provided in all sizes, weights and material specifications for standard services, H2S environment, and HP/HT conditions
- Flow couplings are manufactured from seamless mechanical tubes in sizes ranging from 2 3/8” to 4 1/2” OD.
- Any length, grade of material, and threading are available at the customer’s request. Typical lengths are 3′ and 6′.
Locators are used for the location of various wireline flow control devices in the production string. This locator contains a no-go shoulder used to locate and set the flow control device being run into the well.
The location and number of Top No-Go Seating Locators should be carefully considered in the completion planning stages to allow maximum versatility in the positioning of various flow control devices
The bottom no-go locator is used to land, lock with attached flow control devices in the production tubing string.
- Single and dual Completions.
- No Lock Recess & Dependable no-go style
- Thread choice is available & Complies with API 5CT.
- Maximum reliability and simplicity of locating.
- Various sizes, different threading & different materials are available. OD will vary with tubing weight and thread type.
- Different types of Locators are available e.g. No-Go Locator, Straight Slot Locator, J-Slot Locator, Latch Locator as per specific applications.
The “Wireline Entry guide” are used for safe re-entry of wireline tools from the casing into the tubing string. The internal bevel guides the wireline or slick line tool string back into the tubing.
Mule shoe guide is a standard guide for all the of Completion equipment’s.
- Safe re-entry of wire line or slick line tools into the tubing string.
- Lowest component in the tubing string.
- Rugged one-piece construction.
- Available in low alloy steel and premium materials.
- Available in beveled, full or half mule shoe configurations.
- Reliable and easy to install
- Thread sizes range from 2 3/8” and onwards
- Service H2S/CO2/Standard/Sour
- Material Grades: J-55, N-80, L-80, P-110, 13-CR, 1-CR
The Bullnose is a blanking device used at the end of the string. Its primary function is to prevent flow from entering the bottom end of the string, whilst its rounded nose design provides positives guide while running in hole. Bull noses come in standard tool joint thread configurations and can be modified on location to best fit the application for which they are being used.
- The multi-port nozzle is designed to give full radial coverage over the completion tubular during well intervention operations, while the porting can be manufactured in any combination of up, down and side jetting with port sizes to match the optimum performance for each size of nozzle.
- Fully round end of the tool
- Standard tool joint thread
- Multi-port nozzle giving full radial coverage.
- Maximum reliability and simple functionality.
- Various sizes, different threading & different materials are available. OD will vary with tubing weight and thread type
Size Range: 2-3/8″, 2-7/8″ and 3-1/2″ OD for Tubing 4-1/2″ -20″ OD for Casing
- Thread type: 8RD, 10RD for Tubing (also called EU and NU) BTC, LTC, STC for Casing Also supply the customization threads as per client’s drawings.
- Coupling is produced through tube rolling, heat treatment, threading and other procedures.
- Surface treatment: Phosphate
- Accordance with API 5CT and 5B standards.
- Inspection includes Non-destructive testing.
- If you are looking for competitive, high quality and fast delivery Casing and Tubing Coupling in stock, or if you are planning to buy API Spec. DOTS is the leading manufacture in EGYPT.
Two types of Tandem Sub are used when two or more guns on the same string are to be initiated at different times. The assembly is designed to accept standard pressure switches or addressable switches.
- Various sizes, different threading & different materials are available.
In certain types of TCP operations, it is desirable to centralize the guns and other tools in the casing. It’s designed a full range of centralizers to meet this requirement for all gun sizes. The centralizers are designed to minimize the possibility of “hanging up” while running or pulling the guns and to maximize the flow area around the centralizers.
Consist of three parts
(Bottom Bar, Top Bar, Long Bar).
| Thread Size and Type in. (mm) | Maximum OD in. (mm) | Minimum ID in. (mm) | Number of Ports |
| 2 3/8 (60.33) EUE 8 Rd Box × Pin |
3.01 (76.45) |
1.98 (50.29) |
8 |
| 2 7/8 (73.03) EUE 8 Rd Box × Pin |
3.51 (89.15) |
2.44 (61.98) |
8 |
| 3 1/2 (88.90) EUE 8 Rd Box × Pin |
4.20 (106.68) |
3.0 (76.20) |
8 |
The fill disk is used where either packer selection or well conditions preclude the use of a venting device. The Fill Desk is used in place of a perforated sub and replaces the balanced isolation tool (BIT) in wells with reasonably clean fluids. The glass disk prevents debris from settling on the firing head. Pressure is equalized across the glass disk.
Designed as firing head and mechanical connection between correlation device and loaded perforating gun system using the Top Fire family of detonators GO type connection.
The vertical shock absorber is designed to prevent the packer from unseating and protect gauges in the string when the guns are fired giving rise to initial pressure shocks and disturbances.
Shock waves transmitted to the base of the shock tool are absorbed and cushioned by the use of Belleville washers on both up and down strokes.u
The tool is normally pre-assembled at manufacture. It can, however, be disassembled by removing upper and lower lock screws holding the top and bottom subs in place which allows access to the washers placed over the mandrel.